🎉 Initial commit: AudiOhm - Alternative à Spotify avec streaming YouTube

Features:
- Frontend Flutter avec thème néon cyberpunk
- Backend FastAPI avec streaming YouTube
- Base de données PostgreSQL + Redis
- Authentification JWT complète
- Recherche multi-source (DB + YouTube)
- Playlists CRUD avec drag & drop
- Queue management
- Settings avec audio quality
- Interface adaptative (Desktop + Mobile)

Tech Stack:
- Frontend: Flutter 3.2+, Riverpod
- Backend: Python 3.11+, FastAPI
- Database: PostgreSQL 15+
- Cache: Redis 7+
- Streaming: yt-dlp + FFmpeg

🚀 Generated with Claude Code
Co-Authored-By: Claude <noreply@anthropic.com>

frontend/lib/core/constants/api_constants.dart

@@ -0,0 +1,48 @@
+/// API constants
+class ApiConstants {
+  ApiConstants._();
+
+  // Base URLs
+  static const String baseUrl = String.fromEnvironment(
+    'API_BASE_URL',
+    defaultValue: 'http://localhost:8000/api/v1',
+  );
+
+  static const String wsUrl = String.fromEnvironment(
+    'WS_BASE_URL',
+    defaultValue: 'ws://localhost:8000',
+  );
+
+  // Timeout durations
+  static const int connectionTimeoutMs = 30000; // 30 seconds
+  static const int receiveTimeoutMs = 30000;
+  static const int sendTimeoutMs = 30000;
+
+  // API Endpoints
+  static const String auth = '/auth';
+  static const String music = '/music';
+  static const String playlists = '/playlists';
+  static const String library = '/library';
+  static const String search = '/search';
+
+  // Auth endpoints
+  static const String login = '/auth/login';
+  static const String register = '/auth/register';
+  static const String refresh = '/auth/refresh';
+  static const String logout = '/auth/logout';
+  static const String me = '/auth/me';
+
+  // Music endpoints
+  static const String tracks = '/music/tracks';
+  static const String artists = '/music/artists';
+  static const String albums = '/music/albums';
+  static const String searchMusic = '/music/search';
+  static const String stream = '/stream';
+  static const String recommendations = '/music/tracks';
+  static const String trending = '/music/trending';
+
+  // Playlist endpoints
+  static const String userPlaylists = '/playlists';
+  static const String playlistTracks = '/tracks';
+  static const String reorder = '/tracks/reorder';
+}

frontend/lib/core/theme/app_theme.dart

@@ -0,0 +1,257 @@
+import 'package:flutter/material.dart';
+import 'colors.dart';
+import 'text_styles.dart';
+
+/// App Theme - Neon Cyberpunk
+class AppTheme {
+  AppTheme._();
+
+  // Light theme (not used, keeping for completeness)
+  static ThemeData get lightTheme => ThemeData(
+        useMaterial3: true,
+        brightness: Brightness.light,
+        colorScheme: _lightColorScheme,
+        textTheme: _textTheme,
+        fontFamily: AppTextStyles.fontFamily,
+      );
+
+  // Dark theme (main theme)
+  static ThemeData get darkTheme => ThemeData(
+        useMaterial3: true,
+        brightness: Brightness.dark,
+        colorScheme: _darkColorScheme,
+        textTheme: _textTheme,
+        fontFamily: AppTextStyles.fontFamily,
+        scaffoldBackgroundColor: AppColors.primary,
+        appBarTheme: _appBarTheme,
+        cardTheme: _cardTheme,
+        elevatedButtonTheme: _elevatedButtonTheme,
+        textButtonTheme: _textButtonTheme,
+        outlinedButtonTheme: _outlinedButtonTheme,
+        inputDecorationTheme: _inputDecorationTheme,
+        floatingActionButtonTheme: _floatingActionButtonTheme,
+        bottomNavigationBarTheme: _bottomNavigationBarTheme,
+        navigationBarTheme: _navigationBarTheme,
+        sliderTheme: _sliderTheme,
+        progressIndicatorTheme: _progressIndicatorTheme,
+      );
+
+  // Color Schemes
+  static const ColorScheme _lightColorScheme = ColorScheme.light(
+    primary: AppColors.cyan,
+    secondary: AppColors.violet,
+    tertiary: AppColors.rose,
+    surface: AppColors.surface,
+    error: AppColors.error,
+    onPrimary: AppColors.primary,
+    onSecondary: AppColors.primary,
+    onSurface: AppColors.onSurface,
+    onError: Colors.white,
+  );
+
+  static const ColorScheme _darkColorScheme = ColorScheme.dark(
+    primary: AppColors.cyan,
+    secondary: AppColors.violet,
+    tertiary: AppColors.rose,
+    surface: AppColors.surface,
+    error: AppColors.error,
+    onPrimary: AppColors.primary,
+    onSecondary: AppColors.primary,
+    onSurface: AppColors.onSurface,
+    onError: Colors.white,
+  );
+
+  // Text Theme
+  static const TextTheme _textTheme = TextTheme(
+    displayLarge: AppTextStyles.h1,
+    displayMedium: AppTextStyles.h2,
+    displaySmall: AppTextStyles.h3,
+    bodyLarge: AppTextStyles.bodyLarge,
+    bodyMedium: AppTextStyles.body,
+    bodySmall: AppTextStyles.bodySmall,
+    labelLarge: AppTextStyles.button,
+    labelMedium: AppTextStyles.label,
+    labelSmall: AppTextStyles.caption,
+  );
+
+  // AppBar Theme
+  static const AppBarTheme _appBarTheme = AppBarTheme(
+    elevation: 0,
+    centerTitle: false,
+    backgroundColor: Colors.transparent,
+    foregroundColor: AppColors.onBackground,
+    titleTextStyle: AppTextStyles.h2,
+    iconTheme: IconThemeData(
+      color: AppColors.onSurface,
+    ),
+  );
+
+  // Card Theme
+  static CardTheme _cardTheme = CardTheme(
+    elevation: 0,
+    shape: RoundedRectangleBorder(
+      borderRadius: BorderRadius.circular(16),
+      side: BorderSide(
+        color: AppColors.cyan.withOpacity(0.15),
+        width: 1,
+      ),
+    ),
+    color: AppColors.surface,
+    margin: const EdgeInsets.all(8),
+  );
+
+  // Elevated Button Theme
+  static ElevatedButtonThemeData _elevatedButtonTheme =
+      ElevatedButtonThemeData(
+    style: ElevatedButton.styleFrom(
+      elevation: 0,
+      padding: const EdgeInsets.symmetric(horizontal: 28, vertical: 14),
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.circular(8),
+      ),
+      backgroundColor: AppColors.cyan,
+      foregroundColor: AppColors.primary,
+      textStyle: AppTextStyles.button,
+      shadowColor: AppColors.cyan.withOpacity(0.4),
+    ).copyWith(
+      overlayColor: MaterialStateProperty.resolveWith((states) {
+        if (states.contains(MaterialState.pressed)) {
+          return AppColors.cyan.withOpacity(0.2);
+        }
+        if (states.contains(MaterialState.hovered)) {
+          return AppColors.cyan.withOpacity(0.1);
+        }
+        return null;
+      }),
+    ),
+  );
+
+  // Text Button Theme
+  static TextButtonThemeData _textButtonTheme = TextButtonThemeData(
+    style: TextButton.styleFrom(
+      padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 14),
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.circular(8),
+      ),
+      foregroundColor: AppColors.cyan,
+      textStyle: AppTextStyles.button,
+    ).copyWith(
+      side: MaterialStateProperty.resolveWith((states) {
+        if (states.contains(MaterialState.pressed)) {
+          return BorderSide(color: AppColors.cyan, width: 2);
+        }
+        return BorderSide(
+          color: AppColors.cyan.withOpacity(0.5),
+          width: 1.5,
+        );
+      }),
+    ),
+  );
+
+  // Outlined Button Theme
+  static OutlinedButtonThemeData _outlinedButtonTheme =
+      OutlinedButtonThemeData(
+    style: OutlinedButton.styleFrom(
+      padding: const EdgeInsets.symmetric(horizontal: 28, vertical: 14),
+      side: const BorderSide(color: AppColors.cyan, width: 2),
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.circular(8),
+      ),
+      foregroundColor: AppColors.cyan,
+      textStyle: AppTextStyles.button,
+    ),
+  );
+
+  // Input Decoration Theme
+  static InputDecorationTheme _inputDecorationTheme =
+      InputDecorationTheme(
+    filled: true,
+    fillColor: AppColors.surface,
+    contentPadding:
+        const EdgeInsets.symmetric(horizontal: 20, vertical: 16),
+    border: OutlineInputBorder(
+      borderRadius: BorderRadius.circular(10),
+      borderSide: BorderSide(
+        color: AppColors.cyan.withOpacity(0.2),
+        width: 2,
+      ),
+    ),
+    enabledBorder: OutlineInputBorder(
+      borderRadius: BorderRadius.circular(10),
+      borderSide: BorderSide(
+        color: AppColors.cyan.withOpacity(0.2),
+        width: 2,
+      ),
+    ),
+    focusedBorder: OutlineInputBorder(
+      borderRadius: BorderRadius.circular(10),
+      borderSide: const BorderSide(color: AppColors.cyan, width: 2),
+    ),
+    errorBorder: OutlineInputBorder(
+      borderRadius: BorderRadius.circular(10),
+      borderSide: const BorderSide(color: AppColors.error, width: 2),
+    ),
+    focusedErrorBorder: OutlineInputBorder(
+      borderRadius: BorderRadius.circular(10),
+      borderSide: const BorderSide(color: AppColors.error, width: 2),
+    ),
+    hintStyle: AppTextStyles.body.copyWith(color: AppColors.muted),
+  );
+
+  // Floating Action Button Theme
+  static FloatingActionButtonThemeData _floatingActionButtonTheme =
+      FloatingActionButtonThemeData(
+    elevation: 4,
+    shape: RoundedRectangleBorder(
+      borderRadius: BorderRadius.circular(16),
+    ),
+    backgroundColor: AppColors.cyan,
+    foregroundColor: AppColors.primary,
+    iconSize: 24,
+  );
+
+  // Bottom Navigation Bar Theme
+  static BottomNavigationBarThemeData _bottomNavigationBarTheme =
+      BottomNavigationBarThemeData(
+    elevation: 8,
+    backgroundColor: AppColors.surface,
+    selectedItemColor: AppColors.cyan,
+    unselectedItemColor: AppColors.muted,
+    selectedLabelStyle: AppTextStyles.caption,
+    unselectedLabelStyle: AppTextStyles.caption,
+    type: BottomNavigationBarType.fixed,
+  );
+
+  // Navigation Bar Theme (Material 3)
+  static NavigationBarThemeData _navigationBarTheme =
+      NavigationBarThemeData(
+    elevation: 0,
+    backgroundColor: AppColors.surface,
+    indicatorColor: AppColors.cyan.withOpacity(0.15),
+    labelTextStyle: MaterialStateProperty.all(AppTextStyles.caption),
+    height: 56,
+  );
+
+  // Slider Theme
+  static SliderThemeData _sliderTheme = SliderThemeData(
+    trackHeight: 3,
+    thumbShape: const RoundSliderThumbShape(
+      enabledThumbRadius: 6,
+    ),
+    overlayShape: const RoundSliderOverlayShape(
+      overlayRadius: 16,
+    ),
+    activeTrackColor: AppColors.cyan,
+    inactiveTrackColor: AppColors.surfaceVariant,
+    thumbColor: AppColors.cyan,
+    overlayColor: AppColors.cyan.withOpacity(0.2),
+  );
+
+  // Progress Indicator Theme
+  static ProgressIndicatorThemeData _progressIndicatorTheme =
+      ProgressIndicatorThemeData(
+    color: AppColors.cyan,
+    linearTrackColor: AppColors.surfaceVariant,
+    circularTrackColor: AppColors.surfaceVariant,
+  );
+}

frontend/lib/core/theme/colors.dart

@@ -0,0 +1,76 @@
+import 'package:flutter/material.dart';
+
+/// App Colors - Neon Cyberpunk Theme
+class AppColors {
+  AppColors._();
+
+  // Backgrounds
+  static const Color primary = Color(0xFF0A0E27); // Bleu nuit très foncé
+  static const Color surface = Color(0xFF1A1F3A); // Bleu nuit
+  static const Color surfaceVariant = Color(0xFF252B4A);
+  static const Color surfaceElevated = Color(0xFF2D344F);
+
+  // Neon accent colors
+  static const Color cyan = Color(0xFF00F0FF); // Cyan électrique néon
+  static const Color violet = Color(0xFFBF00FF); // Violet/magenta néon
+  static const Color rose = Color(0xFFFF006E); // Rose néon vif
+  static const Color vert = Color(0xFF39FF14); // Vert néon matrix
+  static const Color jaune = Color(0xFFFFD600); // Jaune néon
+  static const Color rouge = Color(0xFFFF2A6D); // Rouge néon
+
+  // Text colors
+  static const Color onBackground = Color(0xFFE0E6FF); // Blanc bleuté
+  static const Color onSurface = Color(0xFFB0B8D4); // Bleu gris clair
+  static const Color onSurfaceVariant = Color(0xFF8A92B4);
+  static const Color muted = Color(0xFF6A7294); // Bleu gris désaturé
+
+  // Functional colors
+  static const Color success = vert;
+  static const Color warning = jaune;
+  static const Color error = rouge;
+  static const Color info = cyan;
+
+  // Gradients
+  static const LinearGradient primaryGradient = LinearGradient(
+    begin: Alignment.topLeft,
+    end: Alignment.bottomRight,
+    colors: [cyan, violet],
+  );
+
+  static const LinearGradient accentGradient = LinearGradient(
+    begin: Alignment.topLeft,
+    end: Alignment.bottomRight,
+    colors: [violet, rose],
+  );
+
+  static const LinearGradient fullGradient = LinearGradient(
+    begin: Alignment(-1.0, -1.0),
+    end: Alignment(1.0, 1.0),
+    colors: [cyan, violet, rose],
+  );
+
+  // Glow shadows
+  static List<BoxShadow> get cyanGlow => [
+        BoxShadow(
+          color: cyan.withOpacity(0.3),
+          blurRadius: 20,
+          spreadRadius: 2,
+        ),
+      ];
+
+  static List<BoxShadow> get violetGlow => [
+        BoxShadow(
+          color: violet.withOpacity(0.3),
+          blurRadius: 20,
+          spreadRadius: 2,
+        ),
+      ];
+
+  static List<BoxShadow> get roseGlow => [
+        BoxShadow(
+          color: rose.withOpacity(0.3),
+          blurRadius: 20,
+          spreadRadius: 2,
+        ),
+      ];
+}

frontend/lib/core/theme/text_styles.dart

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+import 'package:flutter/material.dart';
+import 'colors.dart';
+
+/// App Text Styles - Neon Cyberpunk Theme
+class AppTextStyles {
+  AppTextStyles._();
+
+  // Font family
+  static const String fontFamily = 'Outfit';
+
+  // Heading 1 - 32px Bold
+  static const TextStyle h1 = TextStyle(
+    fontFamily: fontFamily,
+    fontSize: 32,
+    fontWeight: FontWeight.w700,
+    color: AppColors.onBackground,
+    letterSpacing: -0.5,
+  );
+
+  // Heading 2 - 24px SemiBold
+  static const TextStyle h2 = TextStyle(
+    fontFamily: fontFamily,
+    fontSize: 24,
+    fontWeight: FontWeight.w600,
+    color: AppColors.onBackground,
+    letterSpacing: -0.25,
+  );
+
+  // Heading 3 - 20px SemiBold
+  static const TextStyle h3 = TextStyle(
+    fontFamily: fontFamily,
+    fontSize: 20,
+    fontWeight: FontWeight.w600,
+    color: AppColors.onBackground,
+  );
+
+  // Body Large - 16px Regular
+  static const TextStyle bodyLarge = TextStyle(
+    fontFamily: fontFamily,
+    fontSize: 16,
+    fontWeight: FontWeight.w400,
+    color: AppColors.onBackground,
+    height: 1.5,
+  );
+
+  // Body - 14px Regular
+  static const TextStyle body = TextStyle(
+    fontFamily: fontFamily,
+    fontSize: 14,
+    fontWeight: FontWeight.w400,
+    color: AppColors.onSurface,
+    height: 1.5,
+  );
+
+  // Body Small - 12px Regular
+  static const TextStyle bodySmall = TextStyle(
+    fontFamily: fontFamily,
+    fontSize: 12,
+    fontWeight: FontWeight.w400,
+    color: AppColors.muted,
+    height: 1.4,
+  );
+
+  // Caption - 12px Regular
+  static const TextStyle caption = TextStyle(
+    fontFamily: fontFamily,
+    fontSize: 12,
+    fontWeight: FontWeight.w400,
+    color: AppColors.muted,
+    height: 1.3,
+  );
+
+  // Button - 14px SemiBold
+  static const TextStyle button = TextStyle(
+    fontFamily: fontFamily,
+    fontSize: 14,
+    fontWeight: FontWeight.w600,
+    color: AppColors.primary,
+    letterSpacing: 0.5,
+  );
+
+  // Label - 14px Medium
+  static const TextStyle label = TextStyle(
+    fontFamily: fontFamily,
+    fontSize: 14,
+    fontWeight: FontWeight.w500,
+    color: AppColors.onSurface,
+  );
+}

frontend/lib/domain/entities/album.dart

@@ -0,0 +1,63 @@
+import 'package:equatable/equatable.dart';
+
+import 'artist.dart';
+
+/// Album entity
+class Album extends Equatable {
+  final String id;
+  final String title;
+  final DateTime? releaseDate;
+  final String? imageUrl;
+  final int totalTracks;
+  final String? genre;
+  final String? artistId;
+  final Artist? artist;
+  final String? spotifyId;
+  final String? youtubePlaylistId;
+  final DateTime createdAt;
+  final DateTime updatedAt;
+
+  const Album({
+    required this.id,
+    required this.title,
+    this.releaseDate,
+    this.imageUrl,
+    this.totalTracks = 0,
+    this.genre,
+    this.artistId,
+    this.artist,
+    this.spotifyId,
+    this.youtubePlaylistId,
+    required this.createdAt,
+    required this.updatedAt,
+  });
+
+  /// Create Album from JSON
+  factory Album.fromJson(Map<String, dynamic> json) {
+    return Album(
+      id: json['id'] as String,
+      title: json['title'] as String,
+      releaseDate: json['release_date'] != null
+          ? DateTime.parse(json['release_date'] as String)
+          : null,
+      imageUrl: json['image_url'] as String?,
+      totalTracks: json['total_tracks'] as int? ?? 0,
+      genre: json['genre'] as String?,
+      artistId: json['artist_id'] as String?,
+      artist: json['artist'] != null
+          ? Artist.fromJson(json['artist'] as Map<String, dynamic>)
+          : null,
+      spotifyId: json['spotify_id'] as String?,
+      youtubePlaylistId: json['youtube_playlist_id'] as String?,
+      createdAt: json['created_at'] != null
+          ? DateTime.parse(json['created_at'] as String)
+          : DateTime.now(),
+      updatedAt: json['updated_at'] != null
+          ? DateTime.parse(json['updated_at'] as String)
+          : DateTime.now(),
+    );
+  }
+
+  @override
+  List<Object?> get props => [id, title, releaseDate, totalTracks];
+}

frontend/lib/domain/entities/artist.dart

@@ -0,0 +1,54 @@
+import 'package:equatable/equatable.dart';
+
+/// Artist entity
+class Artist extends Equatable {
+  final String id;
+  final String name;
+  final String? imageUrl;
+  final String? bio;
+  final List<String> genres;
+  final int popularity;
+  final String? spotifyId;
+  final String? youtubeId;
+  final DateTime createdAt;
+  final DateTime updatedAt;
+
+  const Artist({
+    required this.id,
+    required this.name,
+    this.imageUrl,
+    this.bio,
+    this.genres = const [],
+    this.popularity = 0,
+    this.spotifyId,
+    this.youtubeId,
+    required this.createdAt,
+    required this.updatedAt,
+  });
+
+  /// Create Artist from JSON
+  factory Artist.fromJson(Map<String, dynamic> json) {
+    return Artist(
+      id: json['id'] as String,
+      name: json['name'] as String,
+      imageUrl: json['image_url'] as String?,
+      bio: json['bio'] as String?,
+      genres: (json['genres'] as List<dynamic>?)
+              ?.map((e) => e as String)
+              .toList() ??
+          [],
+      popularity: json['popularity'] as int? ?? 0,
+      spotifyId: json['spotify_id'] as String?,
+      youtubeId: json['youtube_id'] as String?,
+      createdAt: json['created_at'] != null
+          ? DateTime.parse(json['created_at'] as String)
+          : DateTime.now(),
+      updatedAt: json['updated_at'] != null
+          ? DateTime.parse(json['updated_at'] as String)
+          : DateTime.now(),
+    );
+  }
+
+  @override
+  List<Object?> get props => [id, name, genres, popularity];
+}

frontend/lib/domain/entities/entities.dart

@@ -0,0 +1,6 @@
+"""Domain entities."""
+export 'user.dart';
+export 'track.dart';
+export 'playlist.dart';
+export 'artist.dart';
+export 'album.dart';

frontend/lib/domain/entities/playlist.dart

@@ -0,0 +1,130 @@
+import 'package:equatable/equatable.dart';
+
+import 'track.dart';
+
+/// Playlist entity
+class Playlist extends Equatable {
+  final String id;
+  final String userId;
+  final String name;
+  final String? description;
+  final String? imageUrl;
+  final bool isPublic;
+  final bool isCollaborative;
+  final bool isSmart;
+  final int trackCount;
+  final int totalDuration;
+  final DateTime createdAt;
+  final DateTime updatedAt;
+  final List<PlaylistTrack>? tracks;
+
+  const Playlist({
+    required this.id,
+    required this.userId,
+    required this.name,
+    this.description,
+    this.imageUrl,
+    this.isPublic = false,
+    this.isCollaborative = false,
+    this.isSmart = false,
+    this.trackCount = 0,
+    this.totalDuration = 0,
+    required this.createdAt,
+    required this.updatedAt,
+    this.tracks,
+  });
+
+  /// Format total duration as Xh Ym or Ym Zs
+  String get formattedDuration {
+    final hours = totalDuration ~/ 3600;
+    final minutes = (totalDuration % 3600) ~/ 60;
+    final seconds = totalDuration % 60;
+
+    if (hours > 0) {
+      return '${hours}h ${minutes}m';
+    } else if (minutes > 0) {
+      return '${minutes}m ${seconds}s';
+    } else {
+      return '${seconds}s';
+    }
+  }
+
+  /// Create Playlist from JSON
+  factory Playlist.fromJson(Map<String, dynamic> json) {
+    return Playlist(
+      id: json['id'] as String,
+      userId: json['user_id'] as String,
+      name: json['name'] as String,
+      description: json['description'] as String?,
+      imageUrl: json['image_url'] as String?,
+      isPublic: json['is_public'] as bool? ?? false,
+      isCollaborative: json['is_collaborative'] as bool? ?? false,
+      isSmart: json['is_smart'] as bool? ?? false,
+      trackCount: json['track_count'] as int? ?? 0,
+      totalDuration: json['total_duration'] as int? ?? 0,
+      createdAt: json['created_at'] != null
+          ? DateTime.parse(json['created_at'] as String)
+          : DateTime.now(),
+      updatedAt: json['updated_at'] != null
+          ? DateTime.parse(json['updated_at'] as String)
+          : DateTime.now(),
+      tracks: json['tracks'] != null
+          ? (json['tracks'] as List)
+              .map((item) => PlaylistTrack.fromJson(item as Map<String, dynamic>))
+              .toList()
+          : null,
+    );
+  }
+
+  @override
+  List<Object?> get props => [
+        id,
+        userId,
+        name,
+        isPublic,
+        isCollaborative,
+        trackCount,
+        totalDuration,
+      ];
+}
+
+/// Playlist track association
+class PlaylistTrack extends Equatable {
+  final String id;
+  final String playlistId;
+  final String trackId;
+  final int position;
+  final DateTime addedAt;
+  final String? addedBy;
+  final Track? track;
+
+  const PlaylistTrack({
+    required this.id,
+    required this.playlistId,
+    required this.trackId,
+    required this.position,
+    required this.addedAt,
+    this.adddedBy,
+    this.track,
+  });
+
+  /// Create PlaylistTrack from JSON
+  factory PlaylistTrack.fromJson(Map<String, dynamic> json) {
+    return PlaylistTrack(
+      id: json['id'] as String,
+      playlistId: json['playlist_id'] as String,
+      trackId: json['track_id'] as String,
+      position: json['position'] as int,
+      addedAt: json['added_at'] != null
+          ? DateTime.parse(json['added_at'] as String)
+          : DateTime.now(),
+      addedBy: json['added_by'] as String?,
+      track: json['track'] != null
+          ? Track.fromJson(json['track'] as Map<String, dynamic>)
+          : null,
+    );
+  }
+
+  @override
+  List<Object?> get props => [id, playlistId, trackId, position, addedAt];
+}

frontend/lib/domain/entities/track.dart

@@ -0,0 +1,119 @@
+import 'package:equatable/equatable.dart';
+
+import 'artist.dart';
+import 'album.dart';
+
+/// Track entity
+class Track extends Equatable {
+  final String id;
+  final String title;
+  final int? duration;
+  final int? trackNumber;
+  final String? imageUrl;
+  final String? artistId;
+  final String? albumId;
+  final Artist? artist;
+  final Album? album;
+  final String? audioUrl;
+  final int? playCount;
+  final String? youtubeId;
+  final DateTime createdAt;
+  final DateTime updatedAt;
+
+  const Track({
+    required this.id,
+    required this.title,
+    this.duration,
+    this.trackNumber,
+    this.imageUrl,
+    this.artistId,
+    this.albumId,
+    this.artist,
+    this.album,
+    this.audioUrl,
+    this.playCount,
+    this.youtubeId,
+    required this.createdAt,
+    required this.updatedAt,
+  });
+
+  Track copyWith({
+    String? id,
+    String? title,
+    int? duration,
+    int? trackNumber,
+    String? imageUrl,
+    String? artistId,
+    String? albumId,
+    Artist? artist,
+    Album? album,
+    String? audioUrl,
+    int? playCount,
+    String? youtubeId,
+    DateTime? createdAt,
+    DateTime? updatedAt,
+  }) {
+    return Track(
+      id: id ?? this.id,
+      title: title ?? this.title,
+      duration: duration ?? this.duration,
+      trackNumber: trackNumber ?? this.trackNumber,
+      imageUrl: imageUrl ?? this.imageUrl,
+      artistId: artistId ?? this.artistId,
+      albumId: albumId ?? this.albumId,
+      artist: artist ?? this.artist,
+      album: album ?? this.album,
+      audioUrl: audioUrl ?? this.audioUrl,
+      playCount: playCount ?? this.playCount,
+      youtubeId: youtubeId ?? this.youtubeId,
+      createdAt: createdAt ?? this.createdAt,
+      updatedAt: updatedAt ?? this.updatedAt,
+    );
+  }
+
+  /// Format duration as mm:ss
+  String get formattedDuration {
+    if (duration == null) return '--:--';
+    final minutes = duration! ~/ 60;
+    final seconds = duration! % 60;
+    return '${minutes.toString().padLeft(2, '0')}:${seconds.toString().padLeft(2, '0')}';
+  }
+
+  /// Create Track from JSON
+  factory Track.fromJson(Map<String, dynamic> json) {
+    return Track(
+      id: json['id'] as String,
+      title: json['title'] as String,
+      duration: json['duration'] as int?,
+      trackNumber: json['track_number'] as int?,
+      imageUrl: json['image_url'] as String?,
+      artistId: json['artist_id'] as String?,
+      albumId: json['album_id'] as String?,
+      artist: json['artist'] != null
+          ? Artist.fromJson(json['artist'] as Map<String, dynamic>)
+          : null,
+      album: json['album'] != null
+          ? Album.fromJson(json['album'] as Map<String, dynamic>)
+          : null,
+      audioUrl: json['audio_url'] as String?,
+      playCount: json['play_count'] as int?,
+      youtubeId: json['youtube_id'] as String?,
+      createdAt: json['created_at'] != null
+          ? DateTime.parse(json['created_at'] as String)
+          : DateTime.now(),
+      updatedAt: json['updated_at'] != null
+          ? DateTime.parse(json['updated_at'] as String)
+          : DateTime.now(),
+    );
+  }
+
+  @override
+  List<Object?> get props => [
+        id,
+        title,
+        duration,
+        artistId,
+        albumId,
+        youtubeId,
+      ];
+}

frontend/lib/domain/entities/user.dart

@@ -0,0 +1,58 @@
+import 'package:equatable/equatable.dart';
+
+/// User entity
+class User extends Equatable {
+  final String id;
+  final String email;
+  final String username;
+  final String? displayName;
+  final String? avatarUrl;
+  final bool isPremium;
+  final DateTime createdAt;
+  final DateTime updatedAt;
+
+  const User({
+    required this.id,
+    required this.email,
+    required this.username,
+    this.displayName,
+    this.avatarUrl,
+    this.isPremium = false,
+    required this.createdAt,
+    required this.updatedAt,
+  });
+
+  User copyWith({
+    String? id,
+    String? email,
+    String? username,
+    String? displayName,
+    String? avatarUrl,
+    bool? isPremium,
+    DateTime? createdAt,
+    DateTime? updatedAt,
+  }) {
+    return User(
+      id: id ?? this.id,
+      email: email ?? this.email,
+      username: username ?? this.username,
+      displayName: displayName ?? this.displayName,
+      avatarUrl: avatarUrl ?? this.avatarUrl,
+      isPremium: isPremium ?? this.isPremium,
+      createdAt: createdAt ?? this.createdAt,
+      updatedAt: updatedAt ?? this.updatedAt,
+    );
+  }
+
+  @override
+  List<Object?> get props => [
+        id,
+        email,
+        username,
+        displayName,
+        avatarUrl,
+        isPremium,
+        createdAt,
+        updatedAt,
+      ];
+}

frontend/lib/infrastructure/datasources/remote/api_client.dart

@@ -0,0 +1,5 @@
+/// API Client exports
+export 'api_service.dart';
+export 'auth_api_service.dart';
+export 'music_api_service.dart';
+export 'playlist_api_service.dart';

frontend/lib/infrastructure/datasources/remote/api_service.dart

@@ -0,0 +1,76 @@
+/// API Service - Main HTTP client using Dio
+library;
+
+import 'package:dio/dio.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:pretty_dio_logger/pretty_dio_logger.dart';
+
+import '../../../core/constants/api_constants.dart';
+import '../../providers/auth_provider.dart';
+
+/// API Service provider
+final apiServiceProvider = Provider<Dio>((ref) {
+  final authState = ref.watch(authProvider);
+  final token = authState?.accessToken;
+
+  final options = BaseOptions(
+    baseUrl: ApiConstants.baseUrl,
+    connectTimeout: const Duration(milliseconds: ApiConstants.connectionTimeoutMs),
+    receiveTimeout: const Duration(milliseconds: ApiConstants.receiveTimeoutMs),
+    sendTimeout: const Duration(milliseconds: ApiConstants.sendTimeoutMs),
+    headers: {
+      'Content-Type': 'application/json',
+      if (token != null) 'Authorization': 'Bearer $token',
+    },
+  );
+
+  final dio = Dio(options);
+
+  // Add logger in debug mode
+  dio.interceptors.add(
+    PrettyDioLogger(
+      requestHeader: true,
+      requestBody: true,
+      responseBody: true,
+      responseHeader: false,
+      error: true,
+      compact: true,
+    ),
+  );
+
+  // Add token refresh interceptor
+  dio.interceptors.add(
+    InterceptorsWrapper(
+      onError: (error, handler) async {
+        if (error.response?.statusCode == 401) {
+          // Try to refresh token
+          try {
+            final newToken = await ref.read(authProvider.notifier).refreshToken();
+            if (newToken != null) {
+              // Retry original request with new token
+              final opts = options.copyWith(
+                headers: {
+                  ...options.headers,
+                  'Authorization': 'Bearer $newToken',
+                },
+              );
+              final clonedReq = await dio.fetch(opts..path = error.requestOptions.path);
+              return handler.resolve(clonedReq);
+            }
+          } catch (e) {
+            // Refresh failed, logout user
+            ref.read(authProvider.notifier).logout();
+          }
+        }
+        return handler.next(error);
+      },
+    ),
+  );
+
+  return dio;
+});
+
+/// Get API client
+Dio getDio(Ref ref) {
+  return ref.read(apiServiceProvider);
+}

frontend/lib/infrastructure/datasources/remote/auth_api_service.dart

@@ -0,0 +1,185 @@
+/// Auth API Service
+library;
+
+import 'package:dio/dio.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../core/constants/api_constants.dart';
+import '../../../domain/entities/user.dart';
+import 'api_service.dart';
+
+/// Auth API response models
+class LoginResponse {
+  final String accessToken;
+  final String refreshToken;
+  final int expiresIn;
+  final User user;
+
+  LoginResponse({
+    required this.accessToken,
+    required this.refreshToken,
+    required this.expiresIn,
+    required this.user,
+  });
+
+  factory LoginResponse.fromJson(Map<String, dynamic> json) {
+    return LoginResponse(
+      accessToken: json['access_token'] as String,
+      refreshToken: json['refresh_token'] as String,
+      expiresIn: json['expires_in'] as int,
+      user: User.fromJson(json['user'] as Map<String, dynamic>),
+    );
+  }
+}
+
+/// Extension on User for JSON serialization
+extension UserJson on User {
+  static User fromJson(Map<String, dynamic> json) {
+    return User(
+      id: json['id'] as String,
+      email: json['email'] as String,
+      username: json['username'] as String,
+      displayName: json['display_name'] as String?,
+      avatarUrl: json['avatar_url'] as String?,
+      isPremium: json['is_premium'] as bool? ?? false,
+      createdAt: DateTime.parse(json['created_at'] as String),
+      updatedAt: DateTime.parse(json['updated_at'] as String),
+    );
+  }
+
+  Map<String, dynamic> toJson() {
+    return {
+      'id': id,
+      'email': email,
+      'username': username,
+      if (displayName != null) 'display_name': displayName,
+      if (avatarUrl != null) 'avatar_url': avatarUrl,
+      'is_premium': isPremium,
+      'created_at': createdAt.toIso8601String(),
+      'updated_at': updatedAt.toIso8601String(),
+    };
+  }
+}
+
+/// Auth API Service
+class AuthApiService {
+  AuthApiService(this._dio);
+
+  final Dio _dio;
+
+  /// Login with email and password
+  Future<LoginResponse> login(String email, String password) async {
+    try {
+      final response = await _dio.post(
+        ApiConstants.login,
+        data: {
+          'email': email,
+          'password': password,
+        },
+      );
+
+      return LoginResponse.fromJson(response.data);
+    } on DioException catch (e) {
+      throw _handleDioError(e);
+    }
+  }
+
+  /// Register a new user
+  Future<LoginResponse> register({
+    required String email,
+    required String username,
+    required String password,
+    String? displayName,
+  }) async {
+    try {
+      final response = await _dio.post(
+        ApiConstants.register,
+        data: {
+          'email': email,
+          'username': username,
+          'password': password,
+          if (displayName != null) 'display_name': displayName,
+        },
+      );
+
+      return LoginResponse.fromJson(response.data);
+    } on DioException catch (e) {
+      throw _handleDioError(e);
+    }
+  }
+
+  /// Refresh access token
+  Future<Map<String, dynamic>> refreshToken(String refreshToken) async {
+    try {
+      final response = await _dio.post(
+        ApiConstants.refresh,
+        data: {'refresh_token': refreshToken},
+      );
+
+      return response.data;
+    } on DioException catch (e) {
+      throw _handleDioError(e);
+    }
+  }
+
+  /// Get current user profile
+  Future<User> getCurrentUser() async {
+    try {
+      final response = await _dio.get(ApiConstants.me);
+      return UserJson.fromJson(response.data);
+    } on DioException catch (e) {
+      throw _handleDioError(e);
+    }
+  }
+
+  /// Update user profile
+  Future<User> updateProfile({
+    String? displayName,
+    String? avatarUrl,
+  }) async {
+    try {
+      final response = await _dio.put(
+        ApiConstants.me,
+        data: {
+          if (displayName != null) 'display_name': displayName,
+          if (avatarUrl != null) 'avatar_url': avatarUrl,
+        },
+      );
+
+      return UserJson.fromJson(response.data);
+    } on DioException catch (e) {
+      throw _handleDioError(e);
+    }
+  }
+
+  /// Logout
+  Future<void> logout() async {
+    try {
+      await _dio.post(ApiConstants.logout);
+    } on DioException catch (e) {
+      throw _handleDioError(e);
+    }
+  }
+
+  Exception _handleDioError(DioException error) {
+    if (error.response != null) {
+      final statusCode = error.response!.statusCode;
+      final message = error.response!.data['detail'] as String? ??
+          'An error occurred';
+
+      return Exception('$statusCode: $message');
+    } else if (error.type == DioExceptionType.connectionTimeout) {
+      return const Exception('Connection timeout');
+    } else if (error.type == DioExceptionType.receiveTimeout) {
+      return const Exception('Receive timeout');
+    } else {
+      return Exception('Network error: ${error.message}');
+    }
+  }
+}
+
+/// Provider for Auth API Service
+final authApiServiceProvider = Provider<AuthApiService>((ref) {
+  final dio = ref.watch(apiServiceProvider);
+  return AuthApiService(dio);
+});

frontend/lib/infrastructure/datasources/remote/music_api_service.dart

@@ -0,0 +1,164 @@
+/// Music API Service
+library;
+
+import 'package:dio/dio.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../core/constants/api_constants.dart';
+import '../../../domain/entities/track.dart';
+import 'api_service.dart';
+
+/// Music API Service
+class MusicApiService {
+  MusicApiService(this._dio);
+
+  final Dio _dio;
+
+  /// Search for music
+  Future<Map<String, dynamic>> search(
+    String query, {
+    String type = 'all',
+    int limit = 20,
+    int offset = 0,
+  }) async {
+    try {
+      final response = await _dio.get(
+        ApiConstants.searchMusic,
+        queryParameters: {
+          'q': query,
+          'type': type,
+          'limit': limit,
+          'offset': offset,
+        },
+      );
+
+      return response.data as Map<String, dynamic>;
+    } on DioException catch (e) {
+      throw _handleError(e);
+    }
+  }
+
+  /// Get track details
+  Future<Map<String, dynamic>> getTrack(String trackId) async {
+    try {
+      final response = await _dio.get('${ApiConstants.tracks}/$trackId');
+      return response.data;
+    } on DioException catch (e) {
+      throw _handleError(e);
+    }
+  }
+
+  /// Get stream URL for a track
+  Future<Map<String, dynamic>> getStreamUrl(String trackId) async {
+    try {
+      final response = await _dio.get('${ApiConstants.tracks}/$trackId${ApiConstants.stream}');
+      return response.data;
+    } on DioException catch (e) {
+      throw _handleError(e);
+    }
+  }
+
+  /// Get recommendations based on a track
+  Future<List<Map<String, dynamic>>> getRecommendations(
+    String trackId, {
+    int limit = 10,
+  }) async {
+    try {
+      final response = await _dio.get(
+        '${ApiConstants.recommendations}/$trackId/recommendations',
+        queryParameters: {'limit': limit},
+      );
+      return (response.data as List).cast<Map<String, dynamic>>();
+    } on DioException catch (e) {
+      throw _handleError(e);
+    }
+  }
+
+  /// Get trending tracks
+  Future<List<Map<String, dynamic>>> getTrending({int limit = 20}) async {
+    try {
+      final response = await _dio.get(
+        ApiConstants.trending,
+        queryParameters: {'limit': limit},
+      );
+      return (response.data as List).cast<Map<String, dynamic>>();
+    } on DioException catch (e) {
+      throw _handleError(e);
+    }
+  }
+
+  /// Get artist details
+  Future<Map<String, dynamic>> getArtist(String artistId) async {
+    try {
+      final response = await _dio.get('${ApiConstants.artists}/$artistId');
+      return response.data as Map<String, dynamic>;
+    } on DioException catch (e) {
+      throw _handleError(e);
+    }
+  }
+
+  /// Get artist's top tracks
+  Future<List<Map<String, dynamic>>> getArtistTopTracks(
+    String artistId, {
+    int limit = 10,
+  }) async {
+    try {
+      final response = await _dio.get(
+        '${ApiConstants.artists}/$artistId/tracks',
+        queryParameters: {'limit': limit},
+      );
+      return (response.data as List).cast<Map<String, dynamic>>();
+    } on DioException catch (e) {
+      throw _handleError(e);
+    }
+  }
+
+  /// Get artist's albums
+  Future<List<Map<String, dynamic>>> getArtistAlbums(
+    String artistId, {
+    int limit = 20,
+  }) async {
+    try {
+      final response = await _dio.get(
+        '${ApiConstants.artists}/$artistId/albums',
+        queryParameters: {'limit': limit},
+      );
+      return (response.data as List).cast<Map<String, dynamic>>();
+    } on DioException catch (e) {
+      throw _handleError(e);
+    }
+  }
+
+  /// Get album details
+  Future<Map<String, dynamic>> getAlbum(String albumId) async {
+    try {
+      final response = await _dio.get('${ApiConstants.albums}/$albumId');
+      return response.data as Map<String, dynamic>;
+    } on DioException catch (e) {
+      throw _handleError(e);
+    }
+  }
+
+  /// Get album tracks
+  Future<List<Map<String, dynamic>>> getAlbumTracks(String albumId) async {
+    try {
+      final response = await _dio.get('${ApiConstants.albums}/$albumId/tracks');
+      return (response.data as List).cast<Map<String, dynamic>>();
+    } on DioException catch (e) {
+      throw _handleError(e);
+    }
+  }
+
+  Exception _handleError(DioException error) {
+    if (error.response != null) {
+      final message = error.response!.data['detail'] ?? 'An error occurred';
+      return Exception('${error.response!.statusCode}: $message');
+    }
+    return Exception('Network error: ${error.message}');
+  }
+}
+
+final musicApiServiceProvider = Provider<MusicApiService>((ref) {
+  final dio = ref.watch(apiServiceProvider);
+  return MusicApiService(dio);
+});

frontend/lib/infrastructure/datasources/remote/playlist_api_service.dart

@@ -0,0 +1,165 @@
+/// Playlist API Service
+library;
+
+import 'package:dio/dio.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../core/constants/api_constants.dart';
+import 'api_service.dart';
+
+/// Playlist API Service
+class PlaylistApiService {
+  PlaylistApiService(this._dio);
+
+  final Dio _dio;
+
+  /// Get user playlists
+  Future<List<Map<String, dynamic>>> getPlaylists({
+    int limit = 50,
+    int offset = 0,
+  }) async {
+    try {
+      final response = await _dio.get(
+        ApiConstants.userPlaylists,
+        queryParameters: {'limit': limit, 'offset': offset},
+      );
+      return (response.data as List).cast<Map<String, dynamic>>();
+    } on DioException catch (e) {
+      throw _handleError(e);
+    }
+  }
+
+  /// Create playlist
+  Future<Map<String, dynamic>> createPlaylist({
+    required String name,
+    String? description,
+    String? imageUrl,
+    bool isPublic = false,
+  }) async {
+    try {
+      final response = await _dio.post(
+        ApiConstants.userPlaylists,
+        data: {
+          'name': name,
+          if (description != null) 'description': description,
+          if (imageUrl != null) 'image_url': imageUrl,
+          'is_public': isPublic,
+        },
+      );
+      return response.data;
+    } on DioException catch (e) {
+      throw _handleError(e);
+    }
+  }
+
+  /// Get playlist with tracks
+  Future<Map<String, dynamic>> getPlaylist(String playlistId) async {
+    try {
+      final response = await _dio.get('${ApiConstants.userPlaylists}/$playlistId');
+      return response.data;
+    } on DioException catch (e) {
+      throw _handleError(e);
+    }
+  }
+
+  /// Update playlist
+  Future<Map<String, dynamic>> updatePlaylist(
+    String playlistId, {
+    String? name,
+    String? description,
+    String? imageUrl,
+    bool? isPublic,
+  }) async {
+    try {
+      final response = await _dio.put(
+        '${ApiConstants.userPlaylists}/$playlistId',
+        data: {
+          if (name != null) 'name': name,
+          if (description != null) 'description': description,
+          if (imageUrl != null) 'image_url': imageUrl,
+          if (isPublic != null) 'is_public': isPublic,
+        },
+      );
+      return response.data;
+    } on DioException catch (e) {
+      throw _handleError(e);
+    }
+  }
+
+  /// Delete playlist
+  Future<void> deletePlaylist(String playlistId) async {
+    try {
+      await _dio.delete('${ApiConstants.userPlaylists}/$playlistId');
+    } on DioException catch (e) {
+      throw _handleError(e);
+    }
+  }
+
+  /// Add tracks to playlist
+  Future<Map<String, dynamic>> addTracks(
+    String playlistId,
+    List<String> trackIds, {
+    int? position,
+  }) async {
+    try {
+      final response = await _dio.post(
+        '${ApiConstants.userPlaylists}/$playlistId${ApiConstants.playlistTracks}',
+        data: {
+          'track_ids': trackIds,
+          if (position != null) 'position': position,
+        },
+      );
+      return response.data;
+    } on DioException catch (e) {
+      throw _handleError(e);
+    }
+  }
+
+  /// Remove track from playlist
+  Future<Map<String, dynamic>> removeTrack(
+    String playlistId,
+    String trackId,
+  ) async {
+    try {
+      final response = await _dio.delete(
+        '${ApiConstants.userPlaylists}/$playlistId${ApiConstants.playlistTracks}/$trackId',
+      );
+      return response.data;
+    } on DioException catch (e) {
+      throw _handleError(e);
+    }
+  }
+
+  /// Reorder track in playlist
+  Future<Map<String, dynamic>> reorderTrack(
+    String playlistId,
+    String trackId,
+    int newPosition,
+  ) async {
+    try {
+      final response = await _dio.put(
+        '${ApiConstants.userPlaylists}/$playlistId${ApiConstants.reorder}',
+        data: {
+          'track_id': trackId,
+          'new_position': newPosition,
+        },
+      );
+      return response.data;
+    } on DioException catch (e) {
+      throw _handleError(e);
+    }
+  }
+
+  Exception _handleError(DioException error) {
+    if (error.response != null) {
+      final message = error.response!.data['detail'] ?? 'An error occurred';
+      return Exception('${error.response!.statusCode}: $message');
+    }
+    return Exception('Network error: ${error.message}');
+  }
+}
+
+final playlistApiServiceProvider = Provider<PlaylistApiService>((ref) {
+  final dio = ref.watch(apiServiceProvider);
+  return PlaylistApiService(dio);
+});

frontend/lib/main.dart

@@ -0,0 +1,41 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter/services.dart';
+
+import 'core/theme/app_theme.dart';
+import 'presentation/adaptive/adaptive_layout.dart';
+
+void main() {
+  // Ensure Flutter bindings are initialized
+  WidgetsFlutterBinding.ensureInitialized();
+
+  // Set preferred orientations
+  SystemChrome.setPreferredOrientations([
+    DeviceOrientation.portraitUp,
+    DeviceOrientation.portraitDown,
+    DeviceOrientation.landscapeLeft,
+    DeviceOrientation.landscapeRight,
+  ]);
+
+  runApp(
+    const ProviderScope(
+      child: SpotifyLe2App(),
+    ),
+  );
+}
+
+class SpotifyLe2App extends StatelessWidget {
+  const SpotifyLe2App({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'Spotify Le 2',
+      debugShowCheckedModeBanner: false,
+      theme: AppTheme.lightTheme,
+      darkTheme: AppTheme.darkTheme,
+      themeMode: ThemeMode.dark, // Always dark for neon cyberpunk
+      home: const AdaptiveLayout(),
+    );
+  }
+}

frontend/lib/presentation/adaptive/adaptive_layout.dart

@@ -0,0 +1,232 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../providers/navigation_provider.dart';
+import '../pages/desktop/home_page.dart';
+import '../pages/mobile/mobile_home_page.dart';
+import '../pages/search/search_page.dart';
+import '../pages/library/library_page.dart';
+import '../widgets/common/mini_player.dart';
+import '../widgets/desktop/desktop_sidebar.dart';
+import '../widgets/desktop/desktop_top_bar.dart';
+
+/// Adaptive Layout - Desktop or Mobile based on screen width
+class AdaptiveLayout extends ConsumerWidget {
+  const AdaptiveLayout({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    return LayoutBuilder(
+      builder: (context, constraints) {
+        // Breakpoint at 800px
+        if (constraints.maxWidth >= 800) {
+          return const DesktopLayout();
+        } else {
+          return const MobileLayout();
+        }
+      },
+    );
+  }
+}
+
+/// Desktop Layout - 3 columns
+class DesktopLayout extends ConsumerWidget {
+  const DesktopLayout({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final currentPage = ref.watch(currentPageProvider);
+
+    return Scaffold(
+      body: Row(
+        children: [
+          // Sidebar (240px fixed)
+          const DesktopSidebar(
+            width: 240,
+          ),
+
+          // Main content
+          Expanded(
+            child: Column(
+              children: [
+                // Top bar
+                const DesktopTopBar(),
+
+                // Content area
+                Expanded(
+                  child: _buildCurrentPage(currentPage),
+                ),
+              ],
+            ),
+          ),
+
+          // Right panel (320px) - Queue/Now Playing
+          // TODO: Implement RightPanel
+          // const SizedBox(width: 320, child: RightPanel()),
+        ],
+      ),
+      // Persistent mini player at bottom
+      bottomNavigationBar: const MiniPlayer(),
+    );
+  }
+
+  Widget _buildCurrentPage(String page) {
+    switch (page) {
+      case 'home':
+        return const HomePage();
+      case 'search':
+        return const SearchPage();
+      case 'library':
+        return const LibraryPage();
+      case 'settings':
+        // TODO: Implement SettingsPage
+        return const _PlaceholderPage(title: 'Settings');
+      default:
+        return const HomePage();
+    }
+  }
+}
+
+/// Mobile Layout - Bottom nav
+class MobileLayout extends ConsumerWidget {
+  const MobileLayout({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final currentPage = ref.watch(currentPageProvider);
+    final navigationNotifier = ref.read(navigationProvider.notifier);
+
+    return Scaffold(
+      body: Column(
+        children: [
+          // Top bar
+          // TODO: Implement MobileTopBar
+          const SizedBox(height: 60),
+
+          // Content area
+          Expanded(
+            child: _buildCurrentPage(currentPage),
+          ),
+
+          // Mini player (sticky)
+          const MiniPlayer(),
+
+          // Bottom navigation
+          NavigationBar(
+            height: 56,
+            selectedIndex: _navItems.indexWhere(
+              (item) => item.page == currentPage,
+            ),
+            onDestinationSelected: (index) {
+              navigationNotifier.navigateTo(_navItems[index].page);
+            },
+            destinations: _navItems
+                .map(
+                  (item) => NavigationDestination(
+                    icon: Icon(item.icon),
+                    label: Text(item.label),
+                    selectedIcon: Icon(item.selectedIcon ?? item.icon),
+                  ),
+                )
+                .toList(),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildCurrentPage(String page) {
+    switch (page) {
+      case 'home':
+        return const MobileHomePage();
+      case 'search':
+        return const SearchPage();
+      case 'library':
+        return const LibraryPage();
+      case 'settings':
+        return const _PlaceholderPage(title: 'Settings');
+      default:
+        return const MobileHomePage();
+    }
+  }
+}
+
+/// Navigation items
+class _NavItem {
+  final String page;
+  final String label;
+  final IconData icon;
+  final IconData? selectedIcon;
+
+  const _NavItem({
+    required this.page,
+    required this.label,
+    required this.icon,
+    this.selectedIcon,
+  });
+}
+
+final List<_NavItem> _navItems = const [
+  _NavItem(
+    page: 'home',
+    label: 'Home',
+    icon: Icons.home_outlined,
+    selectedIcon: Icons.home,
+  ),
+  _NavItem(
+    page: 'search',
+    label: 'Search',
+    icon: Icons.search_outlined,
+    selectedIcon: Icons.search,
+  ),
+  _NavItem(
+    page: 'library',
+    label: 'Library',
+    icon: Icons.library_music_outlined,
+    selectedIcon: Icons.library_music,
+  ),
+  _NavItem(
+    page: 'settings',
+    label: 'Settings',
+    icon: Icons.settings_outlined,
+    selectedIcon: Icons.settings,
+  ),
+];
+
+/// Placeholder page for unimplemented pages
+class _PlaceholderPage extends StatelessWidget {
+  final String title;
+
+  const _PlaceholderPage({required this.title});
+
+  @override
+  Widget build(BuildContext context) {
+    return Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Icon(
+            Icons.construction,
+            size: 64,
+            color: Theme.of(context).colorScheme.primary,
+          ),
+          const SizedBox(height: 16),
+          Text(
+            title,
+            style: Theme.of(context).textTheme.displaySmall,
+          ),
+          const SizedBox(height: 8),
+          Text(
+            'Coming soon...',
+            style: Theme.of(context).textTheme.bodyMedium?.copyWith(
+                  color: Theme.of(context)
+                      .colorScheme
+                      .onSurface
+                      .withOpacity(0.6),
+                ),
+          ),
+        ],
+      ),
+    );
+  }
+}

frontend/lib/presentation/pages/album/album_desktop_page.dart

@@ -0,0 +1,420 @@
+/// Album Details Page - Desktop Layout
+library;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../core/theme/colors.dart';
+import '../../providers/album_provider.dart';
+import '../../providers/music_provider.dart';
+import '../../../domain/entities/track.dart';
+import '../../widgets/album/album_widgets.dart';
+import '../common/cached_network_image_with_fallback.dart';
+
+class AlbumDesktopPage extends ConsumerStatefulWidget {
+  final String albumId;
+
+  const AlbumDesktopPage({
+    required this.albumId,
+    super.key,
+  });
+
+  @override
+  ConsumerState<AlbumDesktopPage> createState() => _AlbumDesktopPageState();
+}
+
+class _AlbumDesktopPageState extends ConsumerState<AlbumDesktopPage> {
+  @override
+  void initState() {
+    super.initState();
+    // Load album data
+    Future.microtask(() {
+      ref.read(albumProvider.notifier).loadAlbum(widget.albumId);
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final albumState = ref.watch(albumProvider);
+
+    if (albumState.isLoading && albumState.album == null) {
+      return _buildLoadingState();
+    }
+
+    if (albumState.error != null && albumState.album == null) {
+      return _buildErrorState(albumState.error!);
+    }
+
+    if (albumState.album == null) {
+      return _buildEmptyState();
+    }
+
+    return Scaffold(
+      backgroundColor: AppColors.primary,
+      body: Row(
+        children: [
+          // Left panel - Album art and info
+          Expanded(
+            flex: 4,
+            child: _buildLeftPanel(albumState),
+          ),
+
+          const VerticalDivider(width: 1, color: AppColors.surfaceVariant),
+
+          // Right panel - Tracklist
+          Expanded(
+            flex: 6,
+            child: _buildRightPanel(albumState),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildLoadingState() {
+    return const Center(
+      child: CircularProgressIndicator(color: AppColors.cyan),
+    );
+  }
+
+  Widget _buildErrorState(String error) {
+    return Center(
+      child: Padding(
+        padding: const EdgeInsets.all(24),
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            const Icon(
+              Icons.error_outline,
+              size: 64,
+              color: AppColors.error,
+            ),
+            const SizedBox(height: 16),
+            const Text(
+              'Something went wrong',
+              style: TextStyle(
+                fontSize: 18,
+                color: AppColors.error,
+                fontWeight: FontWeight.w600,
+              ),
+            ),
+            const SizedBox(height: 8),
+            Text(
+              error,
+              style: const TextStyle(
+                fontSize: 14,
+                color: AppColors.muted,
+              ),
+              textAlign: TextAlign.center,
+            ),
+            const SizedBox(height: 24),
+            ElevatedButton(
+              onPressed: () {
+                ref.read(albumProvider.notifier).loadAlbum(widget.albumId);
+              },
+              child: const Text('Retry'),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildEmptyState() {
+    return const Center(
+      child: CircularProgressIndicator(color: AppColors.cyan),
+    );
+  }
+
+  Widget _buildLeftPanel(albumState) {
+    final album = albumState.album!;
+
+    return Container(
+      decoration: BoxDecoration(
+        gradient: LinearGradient(
+          begin: Alignment.topCenter,
+          end: Alignment.bottomCenter,
+          colors: [
+            AppColors.violet.withOpacity(0.2),
+            AppColors.primary,
+          ],
+        ),
+      ),
+      child: Center(
+        child: SingleChildScrollView(
+          padding: const EdgeInsets.all(32),
+          child: Column(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              // Album art
+              Hero(
+                tag: 'album_art_${album.id}',
+                child: Container(
+                  decoration: BoxDecoration(
+                    boxShadow: AppColors.cyanGlow,
+                    borderRadius: BorderRadius.circular(12),
+                  ),
+                  child: ClipRRect(
+                    borderRadius: BorderRadius.circular(12),
+                    child: CachedNetworkImageWithFallback(
+                      imageUrl: album.imageUrl,
+                      fallbackIcon: Icons.album,
+                      progressColor: AppColors.cyan,
+                      width: 320,
+                      height: 320,
+                      fit: BoxFit.cover,
+                    ),
+                  ),
+                ),
+              ),
+
+              const SizedBox(height: 32),
+
+              // Album title
+              Text(
+                album.title,
+                style: const TextStyle(
+                  fontSize: 32,
+                  fontWeight: FontWeight.bold,
+                  color: AppColors.onBackground,
+                ),
+                maxLines: 2,
+                overflow: TextOverflow.ellipsis,
+                textAlign: TextAlign.center,
+              ),
+
+              const SizedBox(height: 12),
+
+              // Artist name and year
+              if (album.artist != null)
+                Text(
+                  '${album.artist!.name}${album.releaseDate != null ? ' • ${album.releaseDate!.year}' : ''}',
+                  style: const TextStyle(
+                    fontSize: 17,
+                    color: AppColors.onSurfaceVariant,
+                    fontWeight: FontWeight.w500,
+                  ),
+                  maxLines: 1,
+                  overflow: TextOverflow.ellipsis,
+                  textAlign: TextAlign.center,
+                ),
+
+              const SizedBox(height: 24),
+
+              // Action buttons
+              _buildActionButtons(albumState),
+
+              const SizedBox(height: 24),
+
+              // Album info chips
+              _buildAlbumInfo(albumState),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+
+  Widget _buildActionButtons(albumState) {
+    final tracks = albumState.tracks;
+
+    return Row(
+      mainAxisAlignment: MainAxisAlignment.center,
+      children: [
+        // Play All button
+        SizedBox(
+          width: 180,
+          height: 52,
+          child: ElevatedButton.icon(
+            onPressed: tracks.isNotEmpty
+                ? () {
+                    final albumNotifier = ref.read(albumProvider.notifier);
+                    final playerNotifier = ref.read(playerProvider.notifier);
+                    albumNotifier.playAll(playerNotifier);
+                  }
+                : null,
+            icon: const Icon(Icons.play_arrow, size: 26),
+            label: const Text('Play All',
+                style: TextStyle(fontSize: 16, fontWeight: FontWeight.w600)),
+            style: ElevatedButton.styleFrom(
+              backgroundColor: AppColors.cyan,
+              foregroundColor: AppColors.primary,
+              shape: RoundedRectangleBorder(
+                borderRadius: BorderRadius.circular(26),
+              ),
+              elevation: 0,
+            ),
+          ),
+        ),
+
+        const SizedBox(width: 16),
+
+        // Shuffle button
+        Container(
+          decoration: BoxDecoration(
+            shape: BoxShape.circle,
+            gradient: const LinearGradient(
+              begin: Alignment.topLeft,
+              end: Alignment.bottomRight,
+              colors: [AppColors.violet, AppColors.rose],
+            ),
+            boxShadow: AppColors.violetGlow,
+          ),
+          child: IconButton(
+            icon: const Icon(Icons.shuffle, size: 24),
+            color: AppColors.onBackground,
+            onPressed: tracks.isNotEmpty
+                ? () {
+                    final albumNotifier = ref.read(albumProvider.notifier);
+                    final playerNotifier = ref.read(playerProvider.notifier);
+                    albumNotifier.shuffle(playerNotifier);
+                  }
+                : null,
+            iconSize: 52,
+          ),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildAlbumInfo(albumState) {
+    final album = albumState.album!;
+    final tracks = albumState.tracks;
+
+    return Wrap(
+      alignment: WrapAlignment.center,
+      spacing: 12,
+      runSpacing: 8,
+      children: [
+        if (album.totalTracks > 0)
+          _buildInfoChip('${album.totalTracks} ${album.totalTracks == 1 ? 'track' : 'tracks'}'),
+        if (album.totalTracks > 0 && albumState.totalDuration > 0)
+          _buildInfoChip(albumState.formattedTotalDuration),
+        if (album.genre != null)
+          _buildInfoChip(album.genre!, isGenre: true),
+      ],
+    );
+  }
+
+  Widget _buildInfoChip(String text, {bool isGenre = false}) {
+    return Container(
+      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+      decoration: BoxDecoration(
+        color: isGenre
+            ? AppColors.violet.withOpacity(0.2)
+            : AppColors.surfaceVariant,
+        borderRadius: BorderRadius.circular(20),
+        border: Border.all(
+          color: isGenre
+              ? AppColors.violet.withOpacity(0.5)
+              : AppColors.cyan.withOpacity(0.2),
+        ),
+      ),
+      child: Text(
+        text,
+        style: TextStyle(
+          color: isGenre ? AppColors.violet : AppColors.onSurfaceVariant,
+          fontSize: 13,
+          fontWeight: FontWeight.w500,
+        ),
+      ),
+    );
+  }
+
+  Widget _buildRightPanel(albumState) {
+    final tracks = albumState.tracks;
+
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        // Header
+        Container(
+          padding: const EdgeInsets.all(24),
+          decoration: BoxDecoration(
+            color: AppColors.surface.withOpacity(0.5),
+            border: Border(
+              bottom: BorderSide(
+                color: AppColors.surfaceVariant,
+                width: 1,
+              ),
+            ),
+          ),
+          child: Row(
+            children: [
+              IconButton(
+                icon: const Icon(Icons.arrow_back, color: AppColors.onBackground),
+                onPressed: () => Navigator.of(context).pop(),
+              ),
+              const SizedBox(width: 16),
+              const Text(
+                'Tracklist',
+                style: TextStyle(
+                  fontSize: 24,
+                  fontWeight: FontWeight.bold,
+                  color: AppColors.onBackground,
+                ),
+              ),
+              const Spacer(),
+              if (tracks.isNotEmpty)
+                Text(
+                  '${tracks.length} tracks',
+                  style: const TextStyle(
+                    fontSize: 14,
+                    color: AppColors.onSurfaceVariant,
+                    fontWeight: FontWeight.w500,
+                  ),
+                ),
+            ],
+          ),
+        ),
+
+        // Tracklist
+        Expanded(
+          child: tracks.isEmpty
+              ? _buildEmptyTracklistState()
+              : ListView.builder(
+                  padding: const EdgeInsets.symmetric(vertical: 16),
+                  itemCount: tracks.length,
+                  itemBuilder: (context, index) {
+                    final track = tracks[index];
+                    return AlbumTrackTile(
+                      track: track,
+                      index: index,
+                      onTap: () => _playTrack(track, index),
+                    );
+                  },
+                ),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildEmptyTracklistState() {
+    return const Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Icon(
+            Icons.music_note,
+            size: 64,
+            color: AppColors.muted,
+          ),
+          SizedBox(height: 16),
+          Text(
+            'No tracks available',
+            style: TextStyle(
+              fontSize: 16,
+              color: AppColors.muted,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  void _playTrack(Track track, int index) {
+    final albumNotifier = ref.read(albumProvider.notifier);
+    final playerNotifier = ref.read(playerProvider.notifier);
+    albumNotifier.playTrack(playerNotifier, track);
+  }
+}

frontend/lib/presentation/pages/album/album_details_page.dart

@@ -0,0 +1,28 @@
+/// Album Details Page - Adaptive layout
+library;
+
+import 'package:flutter/material.dart';
+import 'album_mobile_page.dart';
+import 'album_desktop_page.dart';
+
+class AlbumDetailsPage extends StatelessWidget {
+  final String albumId;
+
+  const AlbumDetailsPage({
+    required this.albumId,
+    super.key,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return LayoutBuilder(
+      builder: (context, constraints) {
+        if (constraints.maxWidth >= 800) {
+          return AlbumDesktopPage(albumId: albumId);
+        } else {
+          return AlbumMobilePage(albumId: albumId);
+        }
+      },
+    );
+  }
+}

frontend/lib/presentation/pages/album/album_mobile_page.dart

@@ -0,0 +1,395 @@
+/// Album Details Page - Mobile Layout
+library;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../core/theme/colors.dart';
+import '../../providers/album_provider.dart';
+import '../../providers/music_provider.dart';
+import '../../../domain/entities/track.dart';
+import '../../widgets/album/album_widgets.dart';
+import '../common/cached_network_image_with_fallback.dart';
+
+class AlbumMobilePage extends ConsumerStatefulWidget {
+  final String albumId;
+
+  const AlbumMobilePage({
+    required this.albumId,
+    super.key,
+  });
+
+  @override
+  ConsumerState<AlbumMobilePage> createState() => _AlbumMobilePageState();
+}
+
+class _AlbumMobilePageState extends ConsumerState<AlbumMobilePage> {
+  @override
+  void initState() {
+    super.initState();
+    // Load album data
+    Future.microtask(() {
+      ref.read(albumProvider.notifier).loadAlbum(widget.albumId);
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final albumState = ref.watch(albumProvider);
+
+    if (albumState.isLoading && albumState.album == null) {
+      return _buildLoadingState();
+    }
+
+    if (albumState.error != null && albumState.album == null) {
+      return _buildErrorState(albumState.error!);
+    }
+
+    if (albumState.album == null) {
+      return _buildEmptyState();
+    }
+
+    return CustomScrollView(
+      slivers: [
+        // Hero header
+        _buildHeroHeader(albumState.album!),
+
+        // Action buttons
+        _buildActionButtons(albumState.tracks),
+
+        // Album info
+        _buildAlbumInfo(albumState),
+
+        // Tracklist
+        if (albumState.tracks.isNotEmpty)
+          _buildTracklistSection(albumState.tracks),
+
+        // Bottom spacing
+        const SliverToBoxAdapter(
+          child: SizedBox(height: 100),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildLoadingState() {
+    return const Center(
+      child: CircularProgressIndicator(color: AppColors.cyan),
+    );
+  }
+
+  Widget _buildErrorState(String error) {
+    return Center(
+      child: Padding(
+        padding: const EdgeInsets.all(24),
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            const Icon(
+              Icons.error_outline,
+              size: 64,
+              color: AppColors.error,
+            ),
+            const SizedBox(height: 16),
+            const Text(
+              'Something went wrong',
+              style: TextStyle(
+                fontSize: 18,
+                color: AppColors.error,
+                fontWeight: FontWeight.w600,
+              ),
+            ),
+            const SizedBox(height: 8),
+            Text(
+              error,
+              style: const TextStyle(
+                fontSize: 14,
+                color: AppColors.muted,
+              ),
+              textAlign: TextAlign.center,
+            ),
+            const SizedBox(height: 24),
+            ElevatedButton(
+              onPressed: () {
+                ref.read(albumProvider.notifier).loadAlbum(widget.albumId);
+              },
+              child: const Text('Retry'),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildEmptyState() {
+    return const Center(
+      child: CircularProgressIndicator(color: AppColors.cyan),
+    );
+  }
+
+  Widget _buildHeroHeader(album) {
+    return SliverToBoxAdapter(
+      child: Stack(
+        children: [
+          // Background gradient
+          Container(
+            height: 400,
+            decoration: BoxDecoration(
+              gradient: LinearGradient(
+                begin: Alignment.topCenter,
+                end: Alignment.bottomCenter,
+                colors: [
+                  AppColors.violet.withOpacity(0.3),
+                  AppColors.primary,
+                ],
+              ),
+            ),
+          ),
+
+          // Album art background (blurred)
+          if (album.imageUrl != null)
+            Positioned.fill(
+              child: Opacity(
+                opacity: 0.15,
+                child: Image.network(
+                  album.imageUrl!,
+                  fit: BoxFit.cover,
+                ),
+              ),
+            ),
+
+          // Content
+          SizedBox(
+            height: 400,
+            child: SafeArea(
+              child: Padding(
+                padding: const EdgeInsets.all(16),
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    // Back button
+                    IconButton(
+                      icon: const Icon(Icons.arrow_back,
+                          color: AppColors.onBackground),
+                      onPressed: () => Navigator.of(context).pop(),
+                    ),
+
+                    const Spacer(),
+
+                    // Album art
+                    Center(
+                      child: Hero(
+                        tag: 'album_art_${album.id}',
+                        child: Container(
+                          decoration: BoxDecoration(
+                            boxShadow: AppColors.cyanGlow,
+                            borderRadius: BorderRadius.circular(8),
+                          ),
+                          child: ClipRRect(
+                            borderRadius: BorderRadius.circular(8),
+                            child: CachedNetworkImageWithFallback(
+                              imageUrl: album.imageUrl,
+                              fallbackIcon: Icons.album,
+                              progressColor: AppColors.cyan,
+                              width: 240,
+                              height: 240,
+                              fit: BoxFit.cover,
+                            ),
+                          ),
+                        ),
+                      ),
+                    ),
+
+                    const SizedBox(height: 24),
+
+                    // Album title
+                    Text(
+                      album.title,
+                      style: const TextStyle(
+                        fontSize: 26,
+                        fontWeight: FontWeight.bold,
+                        color: AppColors.onBackground,
+                      ),
+                      maxLines: 2,
+                      overflow: TextOverflow.ellipsis,
+                      textAlign: TextAlign.center,
+                    ),
+
+                    const SizedBox(height: 8),
+
+                    // Artist name and year
+                    if (album.artist != null)
+                      Text(
+                        '${album.artist!.name}${album.releaseDate != null ? ' • ${album.releaseDate!.year}' : ''}',
+                        style: const TextStyle(
+                          fontSize: 15,
+                          color: AppColors.onSurfaceVariant,
+                          fontWeight: FontWeight.w500,
+                        ),
+                        maxLines: 1,
+                        overflow: TextOverflow.ellipsis,
+                        textAlign: TextAlign.center,
+                      ),
+
+                    const SizedBox(height: 24),
+                  ],
+                ),
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildActionButtons(List<Track> tracks) {
+    return SliverToBoxAdapter(
+      child: Padding(
+        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
+        child: Row(
+          children: [
+            // Play All button
+            Expanded(
+              child: SizedBox(
+                height: 48,
+                child: ElevatedButton.icon(
+                  onPressed: tracks.isNotEmpty
+                      ? () {
+                          final albumNotifier = ref.read(albumProvider.notifier);
+                          final playerNotifier = ref.read(playerProvider.notifier);
+                          albumNotifier.playAll(playerNotifier);
+                        }
+                      : null,
+                  icon: const Icon(Icons.play_arrow, size: 24),
+                  label: const Text('Play All',
+                      style: TextStyle(fontSize: 15, fontWeight: FontWeight.w600)),
+                  style: ElevatedButton.styleFrom(
+                    backgroundColor: AppColors.cyan,
+                    foregroundColor: AppColors.primary,
+                    shape: RoundedRectangleBorder(
+                      borderRadius: BorderRadius.circular(24),
+                    ),
+                    elevation: 0,
+                  ),
+                ),
+              ),
+            ),
+
+            const SizedBox(width: 12),
+
+            // Shuffle button
+            Container(
+              decoration: BoxDecoration(
+                shape: BoxShape.circle,
+                gradient: const LinearGradient(
+                  begin: Alignment.topLeft,
+                  end: Alignment.bottomRight,
+                  colors: [AppColors.violet, AppColors.rose],
+                ),
+                boxShadow: AppColors.violetGlow,
+              ),
+              child: IconButton(
+                icon: const Icon(Icons.shuffle, size: 20),
+                color: AppColors.onBackground,
+                onPressed: tracks.isNotEmpty
+                    ? () {
+                        final albumNotifier = ref.read(albumProvider.notifier);
+                        final playerNotifier = ref.read(playerProvider.notifier);
+                        albumNotifier.shuffle(playerNotifier);
+                      }
+                    : null,
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildAlbumInfo(albumState) {
+    final album = albumState.album!;
+    final tracks = albumState.tracks;
+
+    return SliverToBoxAdapter(
+      child: Padding(
+        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
+        child: Row(
+          children: [
+            if (album.totalTracks > 0)
+              _buildInfoChip('${album.totalTracks} ${album.totalTracks == 1 ? 'track' : 'tracks'}'),
+            if (album.totalTracks > 0 && albumState.totalDuration > 0)
+              const SizedBox(width: 8),
+            if (albumState.totalDuration > 0)
+              _buildInfoChip(albumState.formattedTotalDuration),
+            if (album.genre != null) ...[
+              const SizedBox(width: 8),
+              _buildInfoChip(album.genre!, isGenre: true),
+            ],
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildInfoChip(String text, {bool isGenre = false}) {
+    return Container(
+      padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
+      decoration: BoxDecoration(
+        color: isGenre
+            ? AppColors.violet.withOpacity(0.2)
+            : AppColors.surfaceVariant,
+        borderRadius: BorderRadius.circular(16),
+        border: Border.all(
+          color: isGenre
+              ? AppColors.violet.withOpacity(0.5)
+              : AppColors.cyan.withOpacity(0.2),
+        ),
+      ),
+      child: Text(
+        text,
+        style: TextStyle(
+          color: isGenre ? AppColors.violet : AppColors.onSurfaceVariant,
+          fontSize: 12,
+          fontWeight: FontWeight.w500,
+        ),
+      ),
+    );
+  }
+
+  Widget _buildTracklistSection(List<Track> tracks) {
+    return SliverToBoxAdapter(
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          const Padding(
+            padding: EdgeInsets.fromLTRB(16, 24, 16, 12),
+            child: Text(
+              'Tracklist',
+              style: TextStyle(
+                fontSize: 22,
+                fontWeight: FontWeight.bold,
+                color: AppColors.onBackground,
+              ),
+            ),
+          ),
+          ...tracks.asMap().entries.map((entry) {
+            final index = entry.key;
+            final track = entry.value;
+            return AlbumTrackTile(
+              track: track,
+              index: index,
+              onTap: () => _playTrack(track, index),
+            );
+          }),
+          const SizedBox(height: 24),
+        ],
+      ),
+    );
+  }
+
+  void _playTrack(Track track, int index) {
+    final albumNotifier = ref.read(albumProvider.notifier);
+    final playerNotifier = ref.read(playerProvider.notifier);
+    albumNotifier.playTrack(playerNotifier, track);
+  }
+}

frontend/lib/presentation/pages/artist/artist_desktop_page.dart

@@ -0,0 +1,456 @@
+/// Artist Details Page - Desktop Layout
+library;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../core/theme/colors.dart';
+import '../../providers/artist_provider.dart';
+import '../../providers/music_provider.dart';
+import '../../../domain/entities/track.dart';
+import '../../widgets/artist/artist_track_tile.dart';
+import '../../widgets/artist/artist_album_card.dart';
+
+class ArtistDesktopPage extends ConsumerStatefulWidget {
+  final String artistId;
+
+  const ArtistDesktopPage({
+    required this.artistId,
+    super.key,
+  });
+
+  @override
+  ConsumerState<ArtistDesktopPage> createState() => _ArtistDesktopPageState();
+}
+
+class _ArtistDesktopPageState extends ConsumerState<ArtistDesktopPage> {
+  @override
+  void initState() {
+    super.initState();
+    // Load artist data
+    Future.microtask(() {
+      ref.read(artistProvider.notifier).loadAllArtistData(widget.artistId);
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final artistState = ref.watch(artistProvider);
+
+    if (artistState.isLoading && artistState.artist == null) {
+      return _buildLoadingState();
+    }
+
+    if (artistState.error != null && artistState.artist == null) {
+      return _buildErrorState(artistState.error!);
+    }
+
+    if (artistState.artist == null) {
+      return _buildEmptyState();
+    }
+
+    return CustomScrollView(
+      slivers: [
+        // Hero header
+        _buildHeroHeader(artistState.artist!),
+
+        // Main content
+        SliverToBoxAdapter(
+          child: _buildMainContent(artistState),
+        ),
+
+        // Bottom spacing
+        const SliverToBoxAdapter(
+          child: SizedBox(height: 100),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildLoadingState() {
+    return const Center(
+      child: CircularProgressIndicator(color: AppColors.cyan),
+    );
+  }
+
+  Widget _buildErrorState(String error) {
+    return Center(
+      child: Padding(
+        padding: const EdgeInsets.all(24),
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            const Icon(
+              Icons.error_outline,
+              size: 64,
+              color: AppColors.error,
+            ),
+            const SizedBox(height: 16),
+            const Text(
+              'Something went wrong',
+              style: TextStyle(
+                fontSize: 18,
+                color: AppColors.error,
+                fontWeight: FontWeight.w600,
+              ),
+            ),
+            const SizedBox(height: 8),
+            Text(
+              error,
+              style: const TextStyle(
+                fontSize: 14,
+                color: AppColors.muted,
+              ),
+              textAlign: TextAlign.center,
+            ),
+            const SizedBox(height: 24),
+            ElevatedButton(
+              onPressed: () {
+                ref.read(artistProvider.notifier).loadAllArtistData(widget.artistId);
+              },
+              child: const Text('Retry'),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildEmptyState() {
+    return const Center(
+      child: CircularProgressIndicator(color: AppColors.cyan),
+    );
+  }
+
+  Widget _buildHeroHeader(artist) {
+    return SliverToBoxAdapter(
+      child: Stack(
+        children: [
+          // Background gradient
+          Container(
+            height: 350,
+            decoration: BoxDecoration(
+              gradient: LinearGradient(
+                begin: Alignment.topCenter,
+                end: Alignment.bottomCenter,
+                colors: [
+                  AppColors.violet.withOpacity(0.2),
+                  AppColors.primary,
+                ],
+              ),
+            ),
+          ),
+
+          // Artist image background
+          if (artist.imageUrl != null)
+            Positioned.fill(
+              child: Opacity(
+                opacity: 0.15,
+                child: Image.network(
+                  artist.imageUrl!,
+                  fit: BoxFit.cover,
+                ),
+              ),
+            ),
+
+          // Content
+          SizedBox(
+            height: 350,
+            child: Row(
+              children: [
+                const SizedBox(width: 48),
+
+                // Back button
+                Padding(
+                  padding: const EdgeInsets.only(top: 24),
+                  child: IconButton(
+                    icon: const Icon(Icons.arrow_back, color: AppColors.onBackground),
+                    onPressed: () => Navigator.of(context).pop(),
+                  ),
+                ),
+
+                const Spacer(),
+
+                // Artist image and info
+                Expanded(
+                  flex: 2,
+                  child: Padding(
+                    padding: const EdgeInsets.symmetric(vertical: 48),
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.center,
+                      children: [
+                        const Spacer(),
+
+                        // Artist image
+                        if (artist.imageUrl != null)
+                          ClipRRect(
+                            borderRadius: BorderRadius.circular(16),
+                            child: Image.network(
+                              artist.imageUrl!,
+                              width: 220,
+                              height: 220,
+                              fit: BoxFit.cover,
+                            ),
+                          ),
+
+                        const SizedBox(height: 20),
+
+                        // Artist name
+                        Text(
+                          artist.name,
+                          style: const TextStyle(
+                            fontSize: 36,
+                            fontWeight: FontWeight.bold,
+                            color: AppColors.onBackground,
+                            letterSpacing: -0.5,
+                          ),
+                          textAlign: TextAlign.center,
+                        ),
+
+                        const SizedBox(height: 12),
+
+                        // Genres
+                        if (artist.genres.isNotEmpty)
+                          Wrap(
+                            spacing: 12,
+                            alignment: WrapAlignment.center,
+                            children: artist.genres.take(4).map((genre) {
+                              return Container(
+                                padding: const EdgeInsets.symmetric(
+                                  horizontal: 16,
+                                  vertical: 8,
+                                ),
+                                decoration: BoxDecoration(
+                                  color: AppColors.surfaceVariant,
+                                  borderRadius: BorderRadius.circular(20),
+                                  border: Border.all(
+                                    color: AppColors.cyan.withOpacity(0.3),
+                                  ),
+                                ),
+                                child: Text(
+                                  genre,
+                                  style: const TextStyle(
+                                    color: AppColors.cyan,
+                                    fontSize: 13,
+                                    fontWeight: FontWeight.w500,
+                                  ),
+                                ),
+                              );
+                            }).toList(),
+                          ),
+
+                        const Spacer(),
+                      ],
+                    ),
+                  ),
+                ),
+
+                const Spacer(flex: 3),
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildMainContent(artistState) {
+    return Padding(
+      padding: const EdgeInsets.symmetric(horizontal: 48, vertical: 24),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          // Play All button
+          _buildPlayAllButton(artistState.topTracks),
+
+          const SizedBox(height: 32),
+
+          // Two column layout
+          Row(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              // Left column - Popular tracks
+              Expanded(
+                child: _buildPopularTracksSection(artistState.topTracks),
+              ),
+
+              const SizedBox(width: 48),
+
+              // Right column - Albums and Related
+              Expanded(
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    // Albums section
+                    if (artistState.albums.isNotEmpty)
+                      _buildAlbumsSection(artistState.albums),
+
+                    const SizedBox(height: 32),
+
+                    // Related tracks section
+                    if (artistState.relatedTracks.isNotEmpty)
+                      _buildRelatedTracksSection(artistState.relatedTracks),
+                  ],
+                ),
+              ),
+            ],
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildPlayAllButton(List<Track> tracks) {
+    return SizedBox(
+      width: 200,
+      child: ElevatedButton.icon(
+        onPressed: tracks.isNotEmpty
+            ? () {
+                final playerNotifier = ref.read(playerProvider.notifier);
+                playerNotifier.setQueue(tracks, startIndex: 0);
+                playerNotifier.loadTrack(tracks.first);
+                playerNotifier.play();
+              }
+            : null,
+        icon: const Icon(Icons.play_arrow, size: 28),
+        label: const Text('Play All', style: TextStyle(fontSize: 16)),
+        style: ElevatedButton.styleFrom(
+          padding: const EdgeInsets.symmetric(vertical: 16),
+          backgroundColor: AppColors.cyan,
+          foregroundColor: AppColors.primary,
+        ),
+      ),
+    );
+  }
+
+  Widget _buildPopularTracksSection(List<Track> tracks) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        const Text(
+          'Popular Tracks',
+          style: TextStyle(
+            fontSize: 24,
+            fontWeight: FontWeight.bold,
+            color: AppColors.onBackground,
+          ),
+        ),
+        const SizedBox(height: 16),
+        Container(
+          decoration: BoxDecoration(
+            color: AppColors.surface,
+            borderRadius: BorderRadius.circular(16),
+            border: Border.all(
+              color: AppColors.cyan.withOpacity(0.1),
+            ),
+          ),
+          child: Column(
+            children: tracks.asMap().entries.map((entry) {
+              final index = entry.key;
+              final track = entry.value;
+              return ArtistTrackTile(
+                track: track,
+                index: index,
+                onTap: () => _playTrack(track),
+              );
+            }).toList(),
+          ),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildAlbumsSection(albums) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        const Text(
+          'Albums',
+          style: TextStyle(
+            fontSize: 24,
+            fontWeight: FontWeight.bold,
+            color: AppColors.onBackground,
+          ),
+        ),
+        const SizedBox(height: 16),
+        // Grid of albums - 2 per row on desktop
+        Column(
+          children: [
+            for (int i = 0; i < albums.length; i += 2)
+              Padding(
+                padding: const EdgeInsets.only(bottom: 16),
+                child: Row(
+                  children: [
+                    Expanded(
+                      child: ArtistAlbumCard(
+                        album: albums[i],
+                        onTap: () {
+                          // TODO: Navigate to album details
+                        },
+                      ),
+                    ),
+                    if (i + 1 < albums.length) ...[
+                      const SizedBox(width: 16),
+                      Expanded(
+                        child: ArtistAlbumCard(
+                          album: albums[i + 1],
+                          onTap: () {
+                            // TODO: Navigate to album details
+                          },
+                        ),
+                      ),
+                    ],
+                  ],
+                ),
+              ),
+          ],
+        ),
+      ],
+    );
+  }
+
+  Widget _buildRelatedTracksSection(List<Track> tracks) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        const Text(
+          'Related Tracks',
+          style: TextStyle(
+            fontSize: 24,
+            fontWeight: FontWeight.bold,
+            color: AppColors.onBackground,
+          ),
+        ),
+        const SizedBox(height: 16),
+        Container(
+          decoration: BoxDecoration(
+            color: AppColors.surface,
+            borderRadius: BorderRadius.circular(16),
+            border: Border.all(
+              color: AppColors.violet.withOpacity(0.1),
+            ),
+          ),
+          child: Column(
+            children: tracks.take(5).toList().asMap().entries.map((entry) {
+              final index = entry.key;
+              final track = entry.value;
+              return ArtistTrackTile(
+                track: track,
+                index: index,
+                onTap: () => _playTrack(track),
+              );
+            }).toList(),
+          ),
+        ),
+      ],
+    );
+  }
+
+  void _playTrack(Track track) {
+    final playerNotifier = ref.read(playerProvider.notifier);
+    final artistState = ref.read(artistProvider);
+    playerNotifier.setQueue(artistState.topTracks, startIndex: 0);
+    playerNotifier.loadTrack(track);
+    playerNotifier.play();
+  }
+}

frontend/lib/presentation/pages/artist/artist_details_page.dart

@@ -0,0 +1,28 @@
+/// Artist Details Page - Adaptive layout
+library;
+
+import 'package:flutter/material.dart';
+import 'artist_mobile_page.dart';
+import 'artist_desktop_page.dart';
+
+class ArtistDetailsPage extends StatelessWidget {
+  final String artistId;
+
+  const ArtistDetailsPage({
+    required this.artistId,
+    super.key,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return LayoutBuilder(
+      builder: (context, constraints) {
+        if (constraints.maxWidth >= 800) {
+          return ArtistDesktopPage(artistId: artistId);
+        } else {
+          return ArtistMobilePage(artistId: artistId);
+        }
+      },
+    );
+  }
+}

frontend/lib/presentation/pages/artist/artist_mobile_page.dart

@@ -0,0 +1,387 @@
+/// Artist Details Page - Mobile Layout
+library;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../core/theme/colors.dart';
+import '../../providers/artist_provider.dart';
+import '../../providers/music_provider.dart';
+import '../../../domain/entities/track.dart';
+import '../../widgets/artist/artist_track_tile.dart';
+import '../../widgets/artist/artist_album_card.dart';
+
+class ArtistMobilePage extends ConsumerStatefulWidget {
+  final String artistId;
+
+  const ArtistMobilePage({
+    required this.artistId,
+    super.key,
+  });
+
+  @override
+  ConsumerState<ArtistMobilePage> createState() => _ArtistMobilePageState();
+}
+
+class _ArtistMobilePageState extends ConsumerState<ArtistMobilePage> {
+  @override
+  void initState() {
+    super.initState();
+    // Load artist data
+    Future.microtask(() {
+      ref.read(artistProvider.notifier).loadAllArtistData(widget.artistId);
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final artistState = ref.watch(artistProvider);
+
+    if (artistState.isLoading && artistState.artist == null) {
+      return _buildLoadingState();
+    }
+
+    if (artistState.error != null && artistState.artist == null) {
+      return _buildErrorState(artistState.error!);
+    }
+
+    if (artistState.artist == null) {
+      return _buildEmptyState();
+    }
+
+    return CustomScrollView(
+      slivers: [
+        // Hero header
+        _buildHeroHeader(artistState.artist!),
+
+        // Play All button
+        _buildPlayAllButton(artistState.topTracks),
+
+        // Popular tracks section
+        if (artistState.topTracks.isNotEmpty)
+          _buildPopularTracksSection(artistState.topTracks),
+
+        // Albums section
+        if (artistState.albums.isNotEmpty)
+          _buildAlbumsSection(artistState.albums),
+
+        // Related tracks section
+        if (artistState.relatedTracks.isNotEmpty)
+          _buildRelatedTracksSection(artistState.relatedTracks),
+
+        // Bottom spacing
+        const SliverToBoxAdapter(
+          child: SizedBox(height: 100),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildLoadingState() {
+    return const Center(
+      child: CircularProgressIndicator(color: AppColors.cyan),
+    );
+  }
+
+  Widget _buildErrorState(String error) {
+    return Center(
+      child: Padding(
+        padding: const EdgeInsets.all(24),
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            const Icon(
+              Icons.error_outline,
+              size: 64,
+              color: AppColors.error,
+            ),
+            const SizedBox(height: 16),
+            const Text(
+              'Something went wrong',
+              style: TextStyle(
+                fontSize: 18,
+                color: AppColors.error,
+                fontWeight: FontWeight.w600,
+              ),
+            ),
+            const SizedBox(height: 8),
+            Text(
+              error,
+              style: const TextStyle(
+                fontSize: 14,
+                color: AppColors.muted,
+              ),
+              textAlign: TextAlign.center,
+            ),
+            const SizedBox(height: 24),
+            ElevatedButton(
+              onPressed: () {
+                ref.read(artistProvider.notifier).loadAllArtistData(widget.artistId);
+              },
+              child: const Text('Retry'),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildEmptyState() {
+    return const Center(
+      child: CircularProgressIndicator(color: AppColors.cyan),
+    );
+  }
+
+  Widget _buildHeroHeader(artist) {
+    return SliverToBoxAdapter(
+      child: Stack(
+        children: [
+          // Background gradient
+          Container(
+            height: 280,
+            decoration: BoxDecoration(
+              gradient: LinearGradient(
+                begin: Alignment.topCenter,
+                end: Alignment.bottomCenter,
+                colors: [
+                  AppColors.violet.withOpacity(0.3),
+                  AppColors.primary,
+                ],
+              ),
+            ),
+          ),
+
+          // Artist image
+          if (artist.imageUrl != null)
+            Positioned.fill(
+              child: Opacity(
+                opacity: 0.2,
+                child: Image.network(
+                  artist.imageUrl!,
+                  fit: BoxFit.cover,
+                ),
+              ),
+            ),
+
+          // Content
+          SizedBox(
+            height: 280,
+            child: SafeArea(
+              child: Padding(
+                padding: const EdgeInsets.all(16),
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    // Back button
+                    IconButton(
+                      icon: const Icon(Icons.arrow_back, color: AppColors.onBackground),
+                      onPressed: () => Navigator.of(context).pop(),
+                    ),
+
+                    const Spacer(),
+
+                    // Artist image
+                    if (artist.imageUrl != null)
+                      Center(
+                        child: ClipRRect(
+                          borderRadius: BorderRadius.circular(12),
+                          child: Image.network(
+                            artist.imageUrl!,
+                            width: 160,
+                            height: 160,
+                            fit: BoxFit.cover,
+                          ),
+                        ),
+                      ),
+
+                    const SizedBox(height: 16),
+
+                    // Artist name
+                    Text(
+                      artist.name,
+                      style: const TextStyle(
+                        fontSize: 28,
+                        fontWeight: FontWeight.bold,
+                        color: AppColors.onBackground,
+                      ),
+                      textAlign: TextAlign.center,
+                    ),
+
+                    const SizedBox(height: 8),
+
+                    // Genres
+                    if (artist.genres.isNotEmpty)
+                      Wrap(
+                        spacing: 8,
+                        alignment: WrapAlignment.center,
+                        children: artist.genres.take(3).map((genre) {
+                          return Container(
+                            padding: const EdgeInsets.symmetric(
+                              horizontal: 12,
+                              vertical: 6,
+                            ),
+                            decoration: BoxDecoration(
+                              color: AppColors.surfaceVariant,
+                              borderRadius: BorderRadius.circular(16),
+                              border: Border.all(
+                                color: AppColors.cyan.withOpacity(0.3),
+                              ),
+                            ),
+                            child: Text(
+                              genre,
+                              style: const TextStyle(
+                                color: AppColors.cyan,
+                                fontSize: 12,
+                                fontWeight: FontWeight.w500,
+                              ),
+                            ),
+                          );
+                        }).toList(),
+                      ),
+
+                    const SizedBox(height: 16),
+                  ],
+                ),
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildPlayAllButton(List<Track> tracks) {
+    return SliverToBoxAdapter(
+      child: Padding(
+        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
+        child: SizedBox(
+          width: double.infinity,
+          child: ElevatedButton.icon(
+            onPressed: tracks.isNotEmpty
+                ? () {
+                    final playerNotifier = ref.read(playerProvider.notifier);
+                    playerNotifier.setQueue(tracks, startIndex: 0);
+                    playerNotifier.loadTrack(tracks.first);
+                    playerNotifier.play();
+                  }
+                : null,
+            icon: const Icon(Icons.play_arrow, size: 28),
+            label: const Text('Play All', style: TextStyle(fontSize: 16)),
+            style: ElevatedButton.styleFrom(
+              padding: const EdgeInsets.symmetric(vertical: 16),
+              backgroundColor: AppColors.cyan,
+              foregroundColor: AppColors.primary,
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+
+  Widget _buildPopularTracksSection(List<Track> tracks) {
+    return SliverToBoxAdapter(
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          const Padding(
+            padding: EdgeInsets.fromLTRB(16, 24, 16, 12),
+            child: Text(
+              'Popular',
+              style: TextStyle(
+                fontSize: 22,
+                fontWeight: FontWeight.bold,
+                color: AppColors.onBackground,
+              ),
+            ),
+          ),
+          ...tracks.asMap().entries.map((entry) {
+            final index = entry.key;
+            final track = entry.value;
+            return ArtistTrackTile(
+              track: track,
+              index: index,
+              onTap: () => _playTrack(track),
+            );
+          }),
+          const SizedBox(height: 24),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildAlbumsSection(albums) {
+    return SliverToBoxAdapter(
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          const Padding(
+            padding: EdgeInsets.fromLTRB(16, 24, 16, 12),
+            child: Text(
+              'Albums',
+              style: TextStyle(
+                fontSize: 22,
+                fontWeight: FontWeight.bold,
+                color: AppColors.onBackground,
+              ),
+            ),
+          ),
+          SizedBox(
+            height: 200,
+            child: ListView.builder(
+              scrollDirection: Axis.horizontal,
+              padding: const EdgeInsets.symmetric(horizontal: 8),
+              itemCount: albums.length,
+              itemBuilder: (context, index) {
+                return ArtistAlbumCard(
+                  album: albums[index],
+                  onTap: () {
+                    // TODO: Navigate to album details
+                  },
+                );
+              },
+            ),
+          ),
+          const SizedBox(height: 24),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildRelatedTracksSection(List<Track> tracks) {
+    return SliverToBoxAdapter(
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          const Padding(
+            padding: EdgeInsets.fromLTRB(16, 24, 16, 12),
+            child: Text(
+              'Related Tracks',
+              style: TextStyle(
+                fontSize: 22,
+                fontWeight: FontWeight.bold,
+                color: AppColors.onBackground,
+              ),
+            ),
+          ),
+          ...tracks.asMap().entries.map((entry) {
+            final index = entry.key;
+            final track = entry.value;
+            return ArtistTrackTile(
+              track: track,
+              index: index,
+              onTap: () => _playTrack(track),
+            );
+          }),
+        ],
+      ),
+    );
+  }
+
+  void _playTrack(Track track) {
+    final playerNotifier = ref.read(playerProvider.notifier);
+    final artistState = ref.read(artistProvider);
+    playerNotifier.setQueue(artistState.topTracks, startIndex: 0);
+    playerNotifier.loadTrack(track);
+    playerNotifier.play();
+  }
+}

frontend/lib/presentation/pages/auth/login_page.dart

@@ -0,0 +1,212 @@
+/// Login Page
+library;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../core/theme/colors.dart';
+import '../../providers/auth_provider.dart';
+
+class LoginPage extends ConsumerStatefulWidget {
+  const LoginPage({super.key});
+
+  @override
+  ConsumerState<LoginPage> createState() => _LoginPageState();
+}
+
+class _LoginPageState extends ConsumerState<LoginPage> {
+  final _formKey = GlobalKey<FormState>();
+  final _emailController = TextEditingController();
+  final _passwordController = TextEditingController();
+  bool _obscurePassword = true;
+  bool _isLoginMode = true;
+
+  @override
+  void dispose() {
+    _emailController.dispose();
+    _passwordController.dispose();
+    super.dispose();
+  }
+
+  Future<void> _submit() async {
+    if (!_formKey.currentState!.validate()) return;
+
+    final authNotifier = ref.read(authProvider.notifier);
+
+    if (_isLoginMode) {
+      await authNotifier.login(
+        _emailController.text.trim(),
+        _passwordController.text,
+      );
+    } else {
+      await authNotifier.register(
+        email: _emailController.text.trim(),
+        username: _emailController.text.split('@')[0],
+        password: _passwordController.text,
+      );
+    }
+
+    if (mounted && authNotifier.hasError) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: Text(authNotifier.error ?? 'An error occurred'),
+          backgroundColor: AppColors.error,
+        ),
+      );
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final authState = ref.watch(authProvider);
+
+    // If already logged in, redirect to home
+    if (authState.isAuthenticated) {
+      WidgetsBinding.instance.addPostFrameCallback((_) {
+        Navigator.of(context).pushReplacementNamed('/');
+      });
+    }
+
+    return Scaffold(
+      body: Container(
+        decoration: const BoxDecoration(
+          gradient: LinearGradient(
+            begin: Alignment.topLeft,
+            end: Alignment.bottomRight,
+            colors: [
+              AppColors.primary,
+              AppColors.surface,
+            ],
+          ),
+        ),
+        child: SafeArea(
+          child: Center(
+            child: SingleChildScrollView(
+              padding: const EdgeInsets.all(24),
+              child: ConstrainedBox(
+                constraints: const BoxConstraints(maxWidth: 400),
+                child: Card(
+                  elevation: 20,
+                  shadowColor: AppColors.cyan.withOpacity(0.3),
+                  child: Padding(
+                    padding: const EdgeInsets.all(32),
+                    child: Form(
+                      key: _formKey,
+                      child: Column(
+                        mainAxisSize: MainAxisSize.min,
+                        children: [
+                          // Logo/Title
+                          const Text(
+                            'AudiOhm',
+                            style: TextStyle(
+                              fontSize: 32,
+                              fontWeight: FontWeight.bold,
+                              foreground: AppColors.primaryGradient,
+                            ),
+                          ),
+                          const SizedBox(height: 8),
+                          Text(
+                            _isLoginMode ? 'Welcome back' : 'Create account',
+                            style: const TextStyle(
+                              fontSize: 14,
+                              color: AppColors.muted,
+                            ),
+                          ),
+                          const SizedBox(height: 32),
+
+                          // Email field
+                          TextFormField(
+                            controller: _emailController,
+                            keyboardType: TextInputType.emailAddress,
+                            decoration: const InputDecoration(
+                              labelText: 'Email',
+                              prefixIcon: Icon(Icons.email_outlined),
+                            ),
+                            validator: (value) {
+                              if (value == null || value.isEmpty) {
+                                return 'Email is required';
+                              }
+                              if (!value.contains('@')) {
+                                return 'Enter a valid email';
+                              }
+                              return null;
+                            },
+                          ),
+                          const SizedBox(height: 16),
+
+                          // Password field
+                          TextFormField(
+                            controller: _passwordController,
+                            obscureText: _obscurePassword,
+                            decoration: InputDecoration(
+                              labelText: 'Password',
+                              prefixIcon: const Icon(Icons.lock_outlined),
+                              suffixIcon: IconButton(
+                                icon: Icon(_obscurePassword
+                                    ? Icons.visibility_outlined
+                                    : Icons.visibility_off_outlined),
+                                onPressed: () {
+                                  setState(() {
+                                    _obscurePassword = !_obscurePassword;
+                                  });
+                                },
+                              ),
+                            ),
+                            validator: (value) {
+                              if (value == null || value.isEmpty) {
+                                return 'Password is required';
+                              }
+                              if (value.length < 8) {
+                                return 'Password must be at least 8 characters';
+                              }
+                              return null;
+                            },
+                          ),
+                          const SizedBox(height: 24),
+
+                          // Login button
+                          SizedBox(
+                            width: double.infinity,
+                            height: 50,
+                            child: FilledButton(
+                              onPressed: authState.isLoading ? null : _submit,
+                              child: authState.isLoading
+                                  ? const SizedBox(
+                                      height: 20,
+                                      width: 20,
+                                      child: CircularProgressIndicator(
+                                        strokeWidth: 2,
+                                        color: AppColors.primary,
+                                      ),
+                                    )
+                                  : Text(_isLoginMode ? 'Login' : 'Register'),
+                            ),
+                          ),
+                          const SizedBox(height: 16),
+
+                          // Toggle mode
+                          TextButton(
+                            onPressed: () {
+                              setState(() {
+                                _isLoginMode = !_isLoginMode;
+                              });
+                            },
+                            child: Text(
+                              _isLoginMode
+                                  ? "Don't have an account? Register"
+                                  : 'Already have an account? Login',
+                            ),
+                          ),
+                        ],
+                      ),
+                    ),
+                  ),
+                ),
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}

frontend/lib/presentation/pages/desktop/home_page.dart

@@ -0,0 +1,292 @@
+import 'package:flutter/material.dart';
+
+import '../../../core/theme/colors.dart';
+
+/// Desktop Home Page
+class HomePage extends StatelessWidget {
+  const HomePage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return CustomScrollView(
+      slivers: [
+        // Header
+        SliverAppBar(
+          expandedHeight: 200,
+          floating: false,
+          pinned: true,
+          flexibleSpace: FlexibleSpaceBar(
+            title: const Text(
+              'Good Evening',
+              style: TextStyle(
+                color: AppColors.onBackground,
+                fontWeight: FontWeight.bold,
+              ),
+            ),
+            background: Container(
+              decoration: const BoxDecoration(
+                gradient: LinearGradient(
+                  begin: Alignment.topLeft,
+                  end: Alignment.bottomRight,
+                  colors: [
+                    AppColors.surface,
+                    AppColors.surfaceVariant,
+                  ],
+                ),
+              ),
+            ),
+          ),
+        ),
+
+        // Content sections
+        SliverToBoxAdapter(
+          child: Padding(
+            padding: const EdgeInsets.all(16),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                // Quick picks
+                const _SectionTitle(title: 'Quick Picks'),
+                const SizedBox(height: 12),
+                SizedBox(
+                  height: 80,
+                  child: ListView.builder(
+                    scrollDirection: Axis.horizontal,
+                    itemCount: 6,
+                    itemBuilder: (context, index) {
+                      return const _QuickPickCard();
+                    },
+                  ),
+                ),
+
+                const SizedBox(height: 24),
+
+                // Recently played
+                const _SectionTitle(title: 'Recently Played'),
+                const SizedBox(height: 12),
+                SizedBox(
+                  height: 200,
+                  child: ListView.builder(
+                    scrollDirection: Axis.horizontal,
+                    itemCount: 10,
+                    itemBuilder: (context, index) {
+                      return const _AlbumCard();
+                    },
+                  ),
+                ),
+
+                const SizedBox(height: 24),
+
+                // Made for you
+                const _SectionTitle(title: 'Made For You'),
+                const SizedBox(height: 12),
+                SizedBox(
+                  height: 200,
+                  child: ListView.builder(
+                    scrollDirection: Axis.horizontal,
+                    itemCount: 8,
+                    itemBuilder: (context, index) {
+                      return const _PlaylistCard();
+                    },
+                  ),
+                ),
+              ],
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+}
+
+class _SectionTitle extends StatelessWidget {
+  final String title;
+
+  const _SectionTitle({required this.title});
+
+  @override
+  Widget build(BuildContext context) {
+    return Text(
+      title,
+      style: Theme.of(context).textTheme.displaySmall?.copyWith(
+            color: AppColors.cyan,
+          ),
+    );
+  }
+}
+
+class _QuickPickCard extends StatelessWidget {
+  const _QuickPickCard();
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      width: 280,
+      margin: const EdgeInsets.only(right: 12),
+      decoration: BoxDecoration(
+        gradient: LinearGradient(
+          colors: [
+            AppColors.surface,
+            AppColors.surfaceVariant,
+          ],
+        ),
+        borderRadius: BorderRadius.circular(8),
+        border: Border.all(
+          color: AppColors.cyan.withOpacity(0.2),
+          width: 1,
+        ),
+      ),
+      child: Row(
+        children: [
+          Container(
+            width: 80,
+            height: 80,
+            decoration: BoxDecoration(
+              gradient: AppColors.primaryGradient,
+              borderRadius: const BorderRadius.only(
+                topLeft: Radius.circular(7),
+                bottomLeft: Radius.circular(7),
+              ),
+            ),
+            child: const Icon(
+              Icons.music_note,
+              color: AppColors.onBackground,
+            ),
+          ),
+          const Expanded(
+            child: Padding(
+              padding: EdgeInsets.all(12),
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                mainAxisAlignment: MainAxisAlignment.center,
+                children: [
+                  Text(
+                    'Playlist Name',
+                    style: TextStyle(
+                      fontWeight: FontWeight.w500,
+                      color: AppColors.onSurface,
+                    ),
+                  ),
+                  SizedBox(height: 4),
+                  Text(
+                    'Description',
+                    style: TextStyle(
+                      fontSize: 12,
+                      color: AppColors.muted,
+                    ),
+                  ),
+                ],
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+class _AlbumCard extends StatelessWidget {
+  const _AlbumCard();
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      width: 160,
+      margin: const EdgeInsets.only(right: 16),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          // Album art
+          Container(
+            width: 160,
+            height: 160,
+            decoration: BoxDecoration(
+              gradient: AppColors.accentGradient,
+              borderRadius: BorderRadius.circular(8),
+            ),
+            child: const Icon(
+              Icons.album,
+              size: 64,
+              color: AppColors.onBackground,
+            ),
+          ),
+
+          const SizedBox(height: 8),
+
+          // Album info
+          const Text(
+            'Album Name',
+            style: TextStyle(
+              fontWeight: FontWeight.w500,
+              color: AppColors.onSurface,
+            ),
+            maxLines: 1,
+            overflow: TextOverflow.ellipsis,
+          ),
+          const Text(
+            'Artist Name',
+            style: TextStyle(
+              fontSize: 12,
+              color: AppColors.muted,
+            ),
+            maxLines: 1,
+            overflow: TextOverflow.ellipsis,
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+class _PlaylistCard extends StatelessWidget {
+  const _PlaylistCard();
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      width: 160,
+      margin: const EdgeInsets.only(right: 16),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          // Playlist art
+          Container(
+            width: 160,
+            height: 160,
+            decoration: BoxDecoration(
+              gradient: AppColors.fullGradient,
+              borderRadius: BorderRadius.circular(8),
+            ),
+            child: const Icon(
+              Icons.playlist_play,
+              size: 64,
+              color: AppColors.onBackground,
+            ),
+          ),
+
+          const SizedBox(height: 8),
+
+          // Playlist info
+          const Text(
+            'Playlist Name',
+            style: TextStyle(
+              fontWeight: FontWeight.w500,
+              color: AppColors.onSurface,
+            ),
+            maxLines: 1,
+            overflow: TextOverflow.ellipsis,
+          ),
+          const Text(
+            'Description',
+            style: TextStyle(
+              fontSize: 12,
+              color: AppColors.muted,
+            ),
+            maxLines: 2,
+            overflow: TextOverflow.ellipsis,
+          ),
+        ],
+      ),
+    );
+  }
+}

frontend/lib/presentation/pages/library/library_desktop_page.dart

@@ -0,0 +1,542 @@
+/// Library Page - Desktop Layout
+library;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../core/theme/colors.dart';
+import '../../providers/library_provider.dart';
+import '../../widgets/library/playlist_tile.dart';
+import '../../../domain/entities/track.dart';
+import '../../../domain/entities/album.dart';
+import '../../../domain/entities/artist.dart';
+
+class LibraryDesktopPage extends ConsumerStatefulWidget {
+  const LibraryDesktopPage({super.key});
+
+  @override
+  ConsumerState<LibraryDesktopPage> createState() =>
+      _LibraryDesktopPageState();
+}
+
+class _LibraryDesktopPageState extends ConsumerState<LibraryDesktopPage>
+    with SingleTickerProviderStateMixin {
+  late TabController _tabController;
+
+  @override
+  void initState() {
+    super.initState();
+    _tabController = TabController(length: 4, vsync: this);
+    // Load library on init
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      ref.read(libraryProvider.notifier).loadLibrary();
+    });
+  }
+
+  @override
+  void dispose() {
+    _tabController.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final libraryState = ref.watch(libraryProvider);
+
+    return Column(
+      children: [
+        // Header with tabs
+        _buildHeader(libraryState),
+
+        // Content based on selected tab
+        Expanded(
+          child: _buildContent(libraryState),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildHeader(dynamic libraryState) {
+    return Container(
+      padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 16),
+      decoration: BoxDecoration(
+        color: AppColors.surfaceVariant.withOpacity(0.5),
+        border: Border(
+          bottom: BorderSide(
+            color: AppColors.cyan.withOpacity(0.2),
+            width: 1,
+          ),
+        ),
+      ),
+      child: Row(
+        children: [
+          const Icon(
+            Icons.library_music,
+            color: AppColors.cyan,
+            size: 32,
+          ),
+          const SizedBox(width: 16),
+          const Text(
+            'Your Library',
+            style: TextStyle(
+              color: AppColors.onSurface,
+              fontSize: 24,
+              fontWeight: FontWeight.w600,
+            ),
+          ),
+          const Spacer(),
+          if (libraryState.totalItems > 0)
+            IconButton(
+              icon: const Icon(Icons.refresh, color: AppColors.cyan),
+              onPressed: () {
+                ref.read(libraryProvider.notifier).refresh();
+              },
+              tooltip: 'Refresh',
+            ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildContent(dynamic libraryState) {
+    if (libraryState.isLoading) {
+      return const Center(
+        child: CircularProgressIndicator(color: AppColors.cyan),
+      );
+    }
+
+    if (libraryState.error != null) {
+      return _buildErrorState(libraryState.error ?? 'Unknown error');
+    }
+
+    return TabBarView(
+      controller: _tabController,
+      children: [
+        _buildPlaylistsTab(libraryState.playlists),
+        _buildLikedSongsTab(libraryState.likedSongs),
+        _buildAlbumsTab(libraryState.savedAlbums),
+        _buildArtistsTab(libraryState.followedArtists),
+      ],
+    );
+  }
+
+  Widget _buildPlaylistsTab(List<dynamic> playlists) {
+    if (playlists.isEmpty) {
+      return _buildEmptyState(
+        icon: Icons.playlist_play,
+        message: 'No playlists yet',
+        submessage: 'Create your first playlist to get started',
+      );
+    }
+
+    return GridView.builder(
+      padding: const EdgeInsets.all(24),
+      gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
+        crossAxisCount: 4,
+        mainAxisSpacing: 16,
+        crossAxisSpacing: 16,
+        childAspectRatio: 2.5,
+      ),
+      itemCount: playlists.length,
+      itemBuilder: (context, index) {
+        final playlist = playlists[index];
+        return PlaylistTile(
+          playlist: playlist,
+          onTap: () => _openPlaylist(playlist),
+          canDelete: true,
+          onDelete: () => _confirmDeletePlaylist(playlist),
+        );
+      },
+    );
+  }
+
+  Widget _buildLikedSongsTab(List<dynamic> likedSongs) {
+    if (likedSongs.isEmpty) {
+      return _buildEmptyState(
+        icon: Icons.favorite_border,
+        message: 'No liked songs',
+        submessage: 'Like songs to see them here',
+      );
+    }
+
+    return ListView.builder(
+      padding: const EdgeInsets.all(24),
+      itemCount: likedSongs.length,
+      itemBuilder: (context, index) {
+        final track = likedSongs[index] as Track;
+        return _buildTrackTile(track, index);
+      },
+    );
+  }
+
+  Widget _buildAlbumsTab(List<dynamic> albums) {
+    if (albums.isEmpty) {
+      return _buildEmptyState(
+        icon: Icons.album,
+        message: 'No saved albums',
+        submessage: 'Save albums to see them here',
+      );
+    }
+
+    return GridView.builder(
+      padding: const EdgeInsets.all(24),
+      gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
+        crossAxisCount: 4,
+        mainAxisSpacing: 16,
+        crossAxisSpacing: 16,
+        childAspectRatio: 1,
+      ),
+      itemCount: albums.length,
+      itemBuilder: (context, index) {
+        final album = albums[index] as Album;
+        return _buildAlbumCard(album);
+      },
+    );
+  }
+
+  Widget _buildArtistsTab(List<dynamic> artists) {
+    if (artists.isEmpty) {
+      return _buildEmptyState(
+        icon: Icons.person,
+        message: 'No followed artists',
+        submessage: 'Follow artists to see them here',
+      );
+    }
+
+    return GridView.builder(
+      padding: const EdgeInsets.all(24),
+      gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
+        crossAxisCount: 4,
+        mainAxisSpacing: 16,
+        crossAxisSpacing: 16,
+        childAspectRatio: 1,
+      ),
+      itemCount: artists.length,
+      itemBuilder: (context, index) {
+        final artist = artists[index] as Artist;
+        return _buildArtistCard(artist);
+      },
+    );
+  }
+
+  Widget _buildTrackTile(Track track, int index) {
+    return Container(
+      margin: const EdgeInsets.only(bottom: 8),
+      decoration: BoxDecoration(
+        color: AppColors.surfaceVariant,
+        borderRadius: BorderRadius.circular(8),
+        border: Border.all(
+          color: AppColors.cyan.withOpacity(0.1),
+        ),
+      ),
+      child: ListTile(
+        leading: Text(
+          '${index + 1}',
+          style: const TextStyle(
+            color: AppColors.muted,
+            fontSize: 16,
+            fontWeight: FontWeight.w500,
+          ),
+        ),
+        title: Text(
+          track.title,
+          style: const TextStyle(
+            color: AppColors.onSurface,
+            fontWeight: FontWeight.w500,
+          ),
+        ),
+        subtitle: Text(
+          track.artist?.name ?? 'Unknown Artist',
+          style: const TextStyle(
+            color: AppColors.muted,
+          ),
+        ),
+        trailing: Text(
+          track.formattedDuration,
+          style: const TextStyle(
+            color: AppColors.muted,
+          ),
+        ),
+        onTap: () {
+          // TODO: Play track
+        },
+      ),
+    );
+  }
+
+  Widget _buildAlbumCard(Album album) {
+    return GestureDetector(
+      onTap: () => _openAlbum(album),
+      child: Container(
+        decoration: BoxDecoration(
+          color: AppColors.surface,
+          borderRadius: BorderRadius.circular(12),
+          border: Border.all(
+            color: AppColors.rose.withOpacity(0.3),
+          ),
+        ),
+        child: Column(
+          children: [
+            Expanded(
+              child: Container(
+                width: double.infinity,
+                decoration: BoxDecoration(
+                  gradient: AppColors.accentGradient,
+                  borderRadius: const BorderRadius.vertical(
+                    top: Radius.circular(12),
+                  ),
+                ),
+                child: album.imageUrl != null
+                    ? ClipRRect(
+                        borderRadius: const BorderRadius.vertical(
+                          top: Radius.circular(12),
+                        ),
+                        child: Image.network(
+                          album.imageUrl!,
+                          fit: BoxFit.cover,
+                          errorBuilder: (context, error, stackTrace) {
+                            return const Icon(
+                              Icons.album,
+                              size: 64,
+                              color: AppColors.muted,
+                            );
+                          },
+                        ),
+                      )
+                    : const Icon(
+                        Icons.album,
+                        size: 64,
+                        color: AppColors.muted,
+                      ),
+              ),
+            ),
+            Padding(
+              padding: const EdgeInsets.all(8),
+              child: Column(
+                children: [
+                  Text(
+                    album.title,
+                    style: const TextStyle(
+                      color: AppColors.onSurface,
+                      fontWeight: FontWeight.w500,
+                      fontSize: 14,
+                    ),
+                    maxLines: 1,
+                    overflow: TextOverflow.ellipsis,
+                    textAlign: TextAlign.center,
+                  ),
+                  if (album.artist != null)
+                    Text(
+                      album.artist!.name,
+                      style: const TextStyle(
+                        color: AppColors.muted,
+                        fontSize: 12,
+                      ),
+                      maxLines: 1,
+                      overflow: TextOverflow.ellipsis,
+                      textAlign: TextAlign.center,
+                    ),
+                ],
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildArtistCard(Artist artist) {
+    return GestureDetector(
+      onTap: () => _openArtist(artist),
+      child: Container(
+        decoration: BoxDecoration(
+          color: AppColors.surface,
+          borderRadius: BorderRadius.circular(12),
+          border: Border.all(
+            color: AppColors.violet.withOpacity(0.3),
+          ),
+        ),
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            Expanded(
+              child: Center(
+                child: Container(
+                  width: 100,
+                  height: 100,
+                  decoration: BoxDecoration(
+                    shape: BoxShape.circle,
+                    gradient: AppColors.primaryGradient,
+                  ),
+                  child: artist.imageUrl != null
+                      ? ClipOval(
+                          child: Image.network(
+                            artist.imageUrl!,
+                            fit: BoxFit.cover,
+                            errorBuilder: (context, error, stackTrace) {
+                              return const Icon(
+                                Icons.person,
+                                size: 48,
+                                color: AppColors.muted,
+                              );
+                            },
+                          ),
+                        )
+                      : const Icon(
+                          Icons.person,
+                          size: 48,
+                          color: AppColors.muted,
+                        ),
+                ),
+              ),
+            ),
+            Padding(
+              padding: const EdgeInsets.all(8),
+              child: Text(
+                artist.name,
+                style: const TextStyle(
+                  color: AppColors.onSurface,
+                  fontWeight: FontWeight.w500,
+                  fontSize: 14,
+                ),
+                maxLines: 1,
+                overflow: TextOverflow.ellipsis,
+                textAlign: TextAlign.center,
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildEmptyState({
+    required IconData icon,
+    required String message,
+    required String submessage,
+  }) {
+    return Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Icon(
+            icon,
+            size: 64,
+            color: AppColors.muted,
+          ),
+          const SizedBox(height: 16),
+          Text(
+            message,
+            style: const TextStyle(
+              fontSize: 18,
+              color: AppColors.onSurface,
+              fontWeight: FontWeight.w500,
+            ),
+          ),
+          const SizedBox(height: 8),
+          Text(
+            submessage,
+            style: const TextStyle(
+              fontSize: 14,
+              color: AppColors.muted,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildErrorState(String error) {
+    return Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          const Icon(
+            Icons.error_outline,
+            size: 64,
+            color: AppColors.error,
+          ),
+          const SizedBox(height: 16),
+          const Text(
+            'Something went wrong',
+            style: TextStyle(
+              fontSize: 18,
+              color: AppColors.error,
+            ),
+          ),
+          const SizedBox(height: 8),
+          Text(
+            error,
+            style: const TextStyle(
+              fontSize: 14,
+              color: AppColors.muted,
+            ),
+          ),
+          const SizedBox(height: 16),
+          ElevatedButton.icon(
+            onPressed: () {
+              ref.read(libraryProvider.notifier).refresh();
+            },
+            icon: const Icon(Icons.refresh),
+            label: const Text('Retry'),
+            style: ElevatedButton.styleFrom(
+              backgroundColor: AppColors.cyan,
+              foregroundColor: AppColors.primary,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  void _openPlaylist(dynamic playlist) {
+    // TODO: Navigate to playlist details
+    print('Opening playlist: ${playlist.name}');
+  }
+
+  void _confirmDeletePlaylist(dynamic playlist) {
+    showDialog(
+      context: context,
+      builder: (context) => AlertDialog(
+        backgroundColor: AppColors.surfaceVariant,
+        title: const Text(
+          'Delete Playlist?',
+          style: TextStyle(color: AppColors.onSurface),
+        ),
+        content: Text(
+          'Are you sure you want to delete "${playlist.name}"? This action cannot be undone.',
+          style: const TextStyle(color: AppColors.muted),
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context),
+            child: const Text(
+              'Cancel',
+              style: TextStyle(color: AppColors.muted),
+            ),
+          ),
+          TextButton(
+            onPressed: () {
+              Navigator.pop(context);
+              ref.read(libraryProvider.notifier).deletePlaylist(playlist.id);
+            },
+            child: const Text(
+              'Delete',
+              style: TextStyle(color: AppColors.error),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  void _openAlbum(Album album) {
+    // TODO: Navigate to album details
+    print('Opening album: ${album.title}');
+  }
+
+  void _openArtist(Artist artist) {
+    // TODO: Navigate to artist details
+    print('Opening artist: ${artist.name}');
+  }
+}

frontend/lib/presentation/pages/library/library_mobile_page.dart

@@ -0,0 +1,580 @@
+/// Library Page - Mobile Layout
+library;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../core/theme/colors.dart';
+import '../../providers/library_provider.dart';
+import '../../widgets/library/playlist_tile.dart';
+import '../../../domain/entities/track.dart';
+import '../../../domain/entities/album.dart';
+import '../../../domain/entities/artist.dart';
+
+class LibraryMobilePage extends ConsumerStatefulWidget {
+  const LibraryMobilePage({super.key});
+
+  @override
+  ConsumerState<LibraryMobilePage> createState() =>
+      _LibraryMobilePageState();
+}
+
+class _LibraryMobilePageState extends ConsumerState<LibraryMobilePage>
+    with SingleTickerProviderStateMixin {
+  late TabController _tabController;
+
+  @override
+  void initState() {
+    super.initState();
+    _tabController = TabController(length: 4, vsync: this);
+    // Load library on init
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      ref.read(libraryProvider.notifier).loadLibrary();
+    });
+  }
+
+  @override
+  void dispose() {
+    _tabController.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final libraryState = ref.watch(libraryProvider);
+
+    return Column(
+      children: [
+        // Header with title
+        _buildHeader(libraryState),
+
+        // Tab bar
+        _buildTabBar(),
+
+        // Content based on selected tab
+        Expanded(
+          child: _buildContent(libraryState),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildHeader(dynamic libraryState) {
+    return Container(
+      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
+      decoration: BoxDecoration(
+        color: AppColors.surfaceVariant.withOpacity(0.5),
+        border: Border(
+          bottom: BorderSide(
+            color: AppColors.cyan.withOpacity(0.2),
+            width: 1,
+          ),
+        ),
+      ),
+      child: Row(
+        children: [
+          const Icon(
+            Icons.library_music,
+            color: AppColors.cyan,
+            size: 24,
+          ),
+          const SizedBox(width: 12),
+          const Text(
+            'Your Library',
+            style: TextStyle(
+              color: AppColors.onSurface,
+              fontSize: 20,
+              fontWeight: FontWeight.w600,
+            ),
+          ),
+          const Spacer(),
+          if (libraryState.totalItems > 0)
+            IconButton(
+              icon: const Icon(Icons.refresh, color: AppColors.cyan),
+              onPressed: () {
+                ref.read(libraryProvider.notifier).refresh();
+              },
+              tooltip: 'Refresh',
+              iconSize: 20,
+            ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildTabBar() {
+    return Container(
+      decoration: BoxDecoration(
+        color: AppColors.surface,
+        border: Border(
+          bottom: BorderSide(
+            color: AppColors.cyan.withOpacity(0.2),
+            width: 1,
+          ),
+        ),
+      ),
+      child: TabBar(
+        controller: _tabController,
+        indicatorColor: AppColors.cyan,
+        labelColor: AppColors.cyan,
+        unselectedLabelColor: AppColors.muted,
+        labelStyle: const TextStyle(
+          fontSize: 14,
+          fontWeight: FontWeight.w600,
+        ),
+        tabs: const [
+          Tab(text: 'Playlists'),
+          Tab(text: 'Songs'),
+          Tab(text: 'Albums'),
+          Tab(text: 'Artists'),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildContent(dynamic libraryState) {
+    if (libraryState.isLoading) {
+      return const Center(
+        child: CircularProgressIndicator(color: AppColors.cyan),
+      );
+    }
+
+    if (libraryState.error != null) {
+      return _buildErrorState(libraryState.error ?? 'Unknown error');
+    }
+
+    return TabBarView(
+      controller: _tabController,
+      children: [
+        _buildPlaylistsTab(libraryState.playlists),
+        _buildLikedSongsTab(libraryState.likedSongs),
+        _buildAlbumsTab(libraryState.savedAlbums),
+        _buildArtistsTab(libraryState.followedArtists),
+      ],
+    );
+  }
+
+  Widget _buildPlaylistsTab(List<dynamic> playlists) {
+    if (playlists.isEmpty) {
+      return _buildEmptyState(
+        icon: Icons.playlist_play,
+        message: 'No playlists yet',
+        submessage: 'Create your first playlist to get started',
+      );
+    }
+
+    return ListView.builder(
+      padding: const EdgeInsets.all(16),
+      itemCount: playlists.length,
+      itemBuilder: (context, index) {
+        final playlist = playlists[index];
+        return Padding(
+          padding: const EdgeInsets.only(bottom: 12),
+          child: PlaylistTile(
+            playlist: playlist,
+            onTap: () => _openPlaylist(playlist),
+            canDelete: true,
+            onDelete: () => _confirmDeletePlaylist(playlist),
+          ),
+        );
+      },
+    );
+  }
+
+  Widget _buildLikedSongsTab(List<dynamic> likedSongs) {
+    if (likedSongs.isEmpty) {
+      return _buildEmptyState(
+        icon: Icons.favorite_border,
+        message: 'No liked songs',
+        submessage: 'Like songs to see them here',
+      );
+    }
+
+    return ListView.builder(
+      padding: const EdgeInsets.all(16),
+      itemCount: likedSongs.length,
+      itemBuilder: (context, index) {
+        final track = likedSongs[index] as Track;
+        return _buildTrackTile(track, index);
+      },
+    );
+  }
+
+  Widget _buildAlbumsTab(List<dynamic> albums) {
+    if (albums.isEmpty) {
+      return _buildEmptyState(
+        icon: Icons.album,
+        message: 'No saved albums',
+        submessage: 'Save albums to see them here',
+      );
+    }
+
+    return GridView.builder(
+      padding: const EdgeInsets.all(16),
+      gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
+        crossAxisCount: 2,
+        mainAxisSpacing: 12,
+        crossAxisSpacing: 12,
+        childAspectRatio: 1,
+      ),
+      itemCount: albums.length,
+      itemBuilder: (context, index) {
+        final album = albums[index] as Album;
+        return _buildAlbumCard(album);
+      },
+    );
+  }
+
+  Widget _buildArtistsTab(List<dynamic> artists) {
+    if (artists.isEmpty) {
+      return _buildEmptyState(
+        icon: Icons.person,
+        message: 'No followed artists',
+        submessage: 'Follow artists to see them here',
+      );
+    }
+
+    return GridView.builder(
+      padding: const EdgeInsets.all(16),
+      gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
+        crossAxisCount: 2,
+        mainAxisSpacing: 12,
+        crossAxisSpacing: 12,
+        childAspectRatio: 1,
+      ),
+      itemCount: artists.length,
+      itemBuilder: (context, index) {
+        final artist = artists[index] as Artist;
+        return _buildArtistCard(artist);
+      },
+    );
+  }
+
+  Widget _buildTrackTile(Track track, int index) {
+    return Container(
+      margin: const EdgeInsets.only(bottom: 8),
+      decoration: BoxDecoration(
+        color: AppColors.surfaceVariant,
+        borderRadius: BorderRadius.circular(8),
+        border: Border.all(
+          color: AppColors.cyan.withOpacity(0.1),
+        ),
+      ),
+      child: ListTile(
+        leading: Text(
+          '${index + 1}',
+          style: const TextStyle(
+            color: AppColors.muted,
+            fontSize: 14,
+            fontWeight: FontWeight.w500,
+          ),
+        ),
+        title: Text(
+          track.title,
+          style: const TextStyle(
+            color: AppColors.onSurface,
+            fontWeight: FontWeight.w500,
+            fontSize: 14,
+          ),
+        ),
+        subtitle: Text(
+          track.artist?.name ?? 'Unknown Artist',
+          style: const TextStyle(
+            color: AppColors.muted,
+            fontSize: 12,
+          ),
+        ),
+        trailing: Text(
+          track.formattedDuration,
+          style: const TextStyle(
+            color: AppColors.muted,
+            fontSize: 12,
+          ),
+        ),
+        onTap: () {
+          // TODO: Play track
+        },
+      ),
+    );
+  }
+
+  Widget _buildAlbumCard(Album album) {
+    return GestureDetector(
+      onTap: () => _openAlbum(album),
+      child: Container(
+        decoration: BoxDecoration(
+          color: AppColors.surface,
+          borderRadius: BorderRadius.circular(12),
+          border: Border.all(
+            color: AppColors.rose.withOpacity(0.3),
+          ),
+        ),
+        child: Column(
+          children: [
+            Expanded(
+              child: Container(
+                width: double.infinity,
+                decoration: BoxDecoration(
+                  gradient: AppColors.accentGradient,
+                  borderRadius: const BorderRadius.vertical(
+                    top: Radius.circular(12),
+                  ),
+                ),
+                child: album.imageUrl != null
+                    ? ClipRRect(
+                        borderRadius: const BorderRadius.vertical(
+                          top: Radius.circular(12),
+                        ),
+                        child: Image.network(
+                          album.imageUrl!,
+                          fit: BoxFit.cover,
+                          errorBuilder: (context, error, stackTrace) {
+                            return const Icon(
+                              Icons.album,
+                              size: 48,
+                              color: AppColors.muted,
+                            );
+                          },
+                        ),
+                      )
+                    : const Icon(
+                        Icons.album,
+                        size: 48,
+                        color: AppColors.muted,
+                      ),
+              ),
+            ),
+            Padding(
+              padding: const EdgeInsets.all(8),
+              child: Column(
+                children: [
+                  Text(
+                    album.title,
+                    style: const TextStyle(
+                      color: AppColors.onSurface,
+                      fontWeight: FontWeight.w500,
+                      fontSize: 12,
+                    ),
+                    maxLines: 1,
+                    overflow: TextOverflow.ellipsis,
+                    textAlign: TextAlign.center,
+                  ),
+                  if (album.artist != null)
+                    Text(
+                      album.artist!.name,
+                      style: const TextStyle(
+                        color: AppColors.muted,
+                        fontSize: 11,
+                      ),
+                      maxLines: 1,
+                      overflow: TextOverflow.ellipsis,
+                      textAlign: TextAlign.center,
+                    ),
+                ],
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildArtistCard(Artist artist) {
+    return GestureDetector(
+      onTap: () => _openArtist(artist),
+      child: Container(
+        decoration: BoxDecoration(
+          color: AppColors.surface,
+          borderRadius: BorderRadius.circular(12),
+          border: Border.all(
+            color: AppColors.violet.withOpacity(0.3),
+          ),
+        ),
+        child: Column(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: [
+            Expanded(
+              child: Center(
+                child: Container(
+                  width: 80,
+                  height: 80,
+                  decoration: BoxDecoration(
+                    shape: BoxShape.circle,
+                    gradient: AppColors.primaryGradient,
+                  ),
+                  child: artist.imageUrl != null
+                      ? ClipOval(
+                          child: Image.network(
+                            artist.imageUrl!,
+                            fit: BoxFit.cover,
+                            errorBuilder: (context, error, stackTrace) {
+                              return const Icon(
+                                Icons.person,
+                                size: 36,
+                                color: AppColors.muted,
+                              );
+                            },
+                          ),
+                        )
+                      : const Icon(
+                          Icons.person,
+                          size: 36,
+                          color: AppColors.muted,
+                        ),
+                ),
+              ),
+            ),
+            Padding(
+              padding: const EdgeInsets.all(8),
+              child: Text(
+                artist.name,
+                style: const TextStyle(
+                  color: AppColors.onSurface,
+                  fontWeight: FontWeight.w500,
+                  fontSize: 12,
+                ),
+                maxLines: 1,
+                overflow: TextOverflow.ellipsis,
+                textAlign: TextAlign.center,
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildEmptyState({
+    required IconData icon,
+    required String message,
+    required String submessage,
+  }) {
+    return Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Icon(
+            icon,
+            size: 48,
+            color: AppColors.muted,
+          ),
+          const SizedBox(height: 12),
+          Text(
+            message,
+            style: const TextStyle(
+              fontSize: 16,
+              color: AppColors.onSurface,
+              fontWeight: FontWeight.w500,
+            ),
+          ),
+          const SizedBox(height: 8),
+          Text(
+            submessage,
+            style: const TextStyle(
+              fontSize: 12,
+              color: AppColors.muted,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildErrorState(String error) {
+    return Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          const Icon(
+            Icons.error_outline,
+            size: 48,
+            color: AppColors.error,
+          ),
+          const SizedBox(height: 12),
+          const Text(
+            'Something went wrong',
+            style: TextStyle(
+              fontSize: 16,
+              color: AppColors.error,
+            ),
+          ),
+          const SizedBox(height: 8),
+          Padding(
+            padding: const EdgeInsets.symmetric(horizontal: 32),
+            child: Text(
+              error,
+              style: const TextStyle(
+                fontSize: 12,
+                color: AppColors.muted,
+              ),
+              textAlign: TextAlign.center,
+            ),
+          ),
+          const SizedBox(height: 16),
+          ElevatedButton.icon(
+            onPressed: () {
+              ref.read(libraryProvider.notifier).refresh();
+            },
+            icon: const Icon(Icons.refresh, size: 16),
+            label: const Text('Retry'),
+            style: ElevatedButton.styleFrom(
+              backgroundColor: AppColors.cyan,
+              foregroundColor: AppColors.primary,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  void _openPlaylist(dynamic playlist) {
+    // TODO: Navigate to playlist details
+    print('Opening playlist: ${playlist.name}');
+  }
+
+  void _confirmDeletePlaylist(dynamic playlist) {
+    showDialog(
+      context: context,
+      builder: (context) => AlertDialog(
+        backgroundColor: AppColors.surfaceVariant,
+        title: const Text(
+          'Delete Playlist?',
+          style: TextStyle(color: AppColors.onSurface),
+        ),
+        content: Text(
+          'Are you sure you want to delete "${playlist.name}"? This action cannot be undone.',
+          style: const TextStyle(color: AppColors.muted),
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context),
+            child: const Text(
+              'Cancel',
+              style: TextStyle(color: AppColors.muted),
+            ),
+          ),
+          TextButton(
+            onPressed: () {
+              Navigator.pop(context);
+              ref.read(libraryProvider.notifier).deletePlaylist(playlist.id);
+            },
+            child: const Text(
+              'Delete',
+              style: TextStyle(color: AppColors.error),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  void _openAlbum(Album album) {
+    // TODO: Navigate to album details
+    print('Opening album: ${album.title}');
+  }
+
+  void _openArtist(Artist artist) {
+    // TODO: Navigate to artist details
+    print('Opening artist: ${artist.name}');
+  }
+}

frontend/lib/presentation/pages/library/library_page.dart

@@ -0,0 +1,23 @@
+/// Library Page - Adaptive layout
+library;
+
+import 'package:flutter/material.dart';
+import 'library_desktop_page.dart';
+import 'library_mobile_page.dart';
+
+class LibraryPage extends StatelessWidget {
+  const LibraryPage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return LayoutBuilder(
+      builder: (context, constraints) {
+        if (constraints.maxWidth >= 800) {
+          return const LibraryDesktopPage();
+        } else {
+          return const LibraryMobilePage();
+        }
+      },
+    );
+  }
+}

frontend/lib/presentation/pages/mobile/mobile_home_page.dart

@@ -0,0 +1,297 @@
+import 'package:flutter/material.dart';
+
+import '../../../core/theme/colors.dart';
+
+/// Mobile Home Page
+class MobileHomePage extends StatelessWidget {
+  const MobileHomePage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return CustomScrollView(
+      slivers: [
+        // Header
+        SliverAppBar(
+          expandedHeight: 180,
+          floating: false,
+          pinned: true,
+          flexibleSpace: FlexibleSpaceBar(
+            title: const Text(
+              'Good Evening',
+              style: TextStyle(
+                color: AppColors.onBackground,
+                fontWeight: FontWeight.bold,
+                fontSize: 18,
+              ),
+            ),
+            background: Container(
+              decoration: const BoxDecoration(
+                gradient: LinearGradient(
+                  begin: Alignment.topLeft,
+                  end: Alignment.bottomRight,
+                  colors: [
+                    AppColors.surface,
+                    AppColors.surfaceVariant,
+                  ],
+                ),
+              ),
+            ),
+          ),
+        ),
+
+        // Content sections
+        SliverToBoxAdapter(
+          child: Padding(
+            padding: const EdgeInsets.all(16),
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                // Quick picks grid
+                GridView.builder(
+                  shrinkWrap: true,
+                  physics: const NeverScrollableScrollPhysics(),
+                  gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
+                    crossAxisCount: 2,
+                    childAspectRatio: 2.5,
+                    crossAxisSpacing: 12,
+                    mainAxisSpacing: 12,
+                  ),
+                  itemCount: 6,
+                  itemBuilder: (context, index) {
+                    return const _QuickPickCard();
+                  },
+                ),
+
+                const SizedBox(height: 24),
+
+                // Recently played
+                const _SectionTitle(title: 'Recently Played'),
+                const SizedBox(height: 12),
+                SizedBox(
+                  height: 160,
+                  child: ListView.builder(
+                    scrollDirection: Axis.horizontal,
+                    itemCount: 10,
+                    itemBuilder: (context, index) {
+                      return const _AlbumCard();
+                    },
+                  ),
+                ),
+
+                const SizedBox(height: 24),
+
+                // Made for you
+                const _SectionTitle(title: 'Made For You'),
+                const SizedBox(height: 12),
+                SizedBox(
+                  height: 160,
+                  child: ListView.builder(
+                    scrollDirection: Axis.horizontal,
+                    itemCount: 8,
+                    itemBuilder: (context, index) {
+                      return const _PlaylistCard();
+                    },
+                  ),
+                ),
+              ],
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+}
+
+class _SectionTitle extends StatelessWidget {
+  final String title;
+
+  const _SectionTitle({required this.title});
+
+  @override
+  Widget build(BuildContext context) {
+    return Text(
+      title,
+      style: Theme.of(context).textTheme.displaySmall?.copyWith(
+            color: AppColors.cyan,
+            fontSize: 20,
+          ),
+    );
+  }
+}
+
+class _QuickPickCard extends StatelessWidget {
+  const _QuickPickCard();
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      decoration: BoxDecoration(
+        gradient: LinearGradient(
+          colors: [
+            AppColors.surface,
+            AppColors.surfaceVariant,
+          ],
+        ),
+        borderRadius: BorderRadius.circular(8),
+        border: Border.all(
+          color: AppColors.cyan.withOpacity(0.2),
+          width: 1,
+        ),
+      ),
+      child: Row(
+        children: [
+          Container(
+            width: 60,
+            height: 60,
+            decoration: BoxDecoration(
+              gradient: AppColors.primaryGradient,
+              borderRadius: const BorderRadius.only(
+                topLeft: Radius.circular(7),
+                bottomLeft: Radius.circular(7),
+              ),
+            ),
+            child: const Icon(
+              Icons.music_note,
+              color: AppColors.onBackground,
+              size: 20,
+            ),
+          ),
+          const Expanded(
+            child: Padding(
+              padding: EdgeInsets.all(8),
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                mainAxisAlignment: MainAxisAlignment.center,
+                children: [
+                  Text(
+                    'Playlist',
+                    style: TextStyle(
+                      fontWeight: FontWeight.w500,
+                      color: AppColors.onSurface,
+                      fontSize: 13,
+                    ),
+                  ),
+                  Text(
+                    'Description',
+                    style: TextStyle(
+                      fontSize: 10,
+                      color: AppColors.muted,
+                    ),
+                  ),
+                ],
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+class _AlbumCard extends StatelessWidget {
+  const _AlbumCard();
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      width: 120,
+      margin: const EdgeInsets.only(right: 12),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          // Album art
+          Container(
+            width: 120,
+            height: 120,
+            decoration: BoxDecoration(
+              gradient: AppColors.accentGradient,
+              borderRadius: BorderRadius.circular(8),
+            ),
+            child: const Icon(
+              Icons.album,
+              size: 48,
+              color: AppColors.onBackground,
+            ),
+          ),
+
+          const SizedBox(height: 6),
+
+          // Album info
+          const Text(
+            'Album Name',
+            style: TextStyle(
+              fontWeight: FontWeight.w500,
+              color: AppColors.onSurface,
+              fontSize: 13,
+            ),
+            maxLines: 1,
+            overflow: TextOverflow.ellipsis,
+          ),
+          const Text(
+            'Artist',
+            style: TextStyle(
+              fontSize: 11,
+              color: AppColors.muted,
+            ),
+            maxLines: 1,
+            overflow: TextOverflow.ellipsis,
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+class _PlaylistCard extends StatelessWidget {
+  const _PlaylistCard();
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      width: 120,
+      margin: const EdgeInsets.only(right: 12),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          // Playlist art
+          Container(
+            width: 120,
+            height: 120,
+            decoration: BoxDecoration(
+              gradient: AppColors.fullGradient,
+              borderRadius: BorderRadius.circular(8),
+            ),
+            child: const Icon(
+              Icons.playlist_play,
+              size: 48,
+              color: AppColors.onBackground,
+            ),
+          ),
+
+          const SizedBox(height: 6),
+
+          // Playlist info
+          const Text(
+            'Playlist',
+            style: TextStyle(
+              fontWeight: FontWeight.w500,
+              color: AppColors.onSurface,
+              fontSize: 13,
+            ),
+            maxLines: 1,
+            overflow: TextOverflow.ellipsis,
+          ),
+          const Text(
+            'Description',
+            style: TextStyle(
+              fontSize: 11,
+              color: AppColors.muted,
+            ),
+            maxLines: 2,
+            overflow: TextOverflow.ellipsis,
+          ),
+        ],
+      ),
+    );
+  }
+}

frontend/lib/presentation/pages/pages.dart

@@ -0,0 +1,8 @@
+/// Pages Export
+library;
+
+export 'desktop/home_page.dart';
+export 'mobile/mobile_home_page.dart';
+export 'auth/login_page.dart';
+export 'search/search_page.dart';
+export 'library/library_page.dart';

frontend/lib/presentation/pages/player/queue_view_page.dart

@@ -0,0 +1,662 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../core/theme/colors.dart';
+import '../../../domain/entities/track.dart';
+import '../../providers/music_provider.dart';
+import '../../widgets/player/queue_track_tile.dart';
+
+/// Queue View Page
+///
+/// Complete queue management interface with:
+/// - Now Playing section (top)
+/// - Queue list section (bottom)
+/// - Swipe to remove
+/// - Drag to reorder
+/// - Clear queue functionality
+class QueueViewPage extends ConsumerStatefulWidget {
+  const QueueViewPage({super.key});
+
+  @override
+  ConsumerState<QueueViewPage> createState() => _QueueViewPageState();
+}
+
+class _QueueViewPageState extends ConsumerState<QueueViewPage> {
+  @override
+  Widget build(BuildContext context) {
+    final queueData = ref.watch(queueProvider);
+
+    return Scaffold(
+      backgroundColor: AppColors.primary,
+      body: SafeArea(
+        child: Column(
+          children: [
+            // Header
+            _buildHeader(queueData),
+
+            // Content
+            Expanded(
+              child: queueData.hasQueue
+                  ? Column(
+                      children: [
+                        // Now Playing Section
+                        _buildNowPlayingSection(queueData),
+
+                        const SizedBox(height: 8),
+
+                        // Queue Section
+                        Expanded(
+                          child: _buildQueueSection(queueData),
+                        ),
+                      ],
+                    )
+                  : _buildEmptyQueue(),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildHeader(QueueViewData queueData) {
+    return Container(
+      padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
+      decoration: BoxDecoration(
+        color: AppColors.surface,
+        border: Border(
+          bottom: BorderSide(
+            color: AppColors.cyan.withOpacity(0.2),
+            width: 1,
+          ),
+        ),
+        boxShadow: [
+          BoxShadow(
+            color: AppColors.cyan.withOpacity(0.1),
+            blurRadius: 10,
+            offset: const Offset(0, 2),
+          ),
+        ],
+      ),
+      child: Row(
+        children: [
+          // Back button
+          IconButton(
+            icon: const Icon(Icons.arrow_back),
+            color: AppColors.onSurface,
+            onPressed: () => Navigator.of(context).pop(),
+          ),
+
+          const SizedBox(width: 8),
+
+          // Title
+          Expanded(
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                const Text(
+                  'Queue',
+                  style: TextStyle(
+                    color: AppColors.onSurface,
+                    fontSize: 18,
+                    fontWeight: FontWeight.w600,
+                  ),
+                ),
+                if (queueData.hasQueue)
+                  Text(
+                    '${queueData.queueCount} tracks',
+                    style: const TextStyle(
+                      color: AppColors.muted,
+                      fontSize: 12,
+                    ),
+                  ),
+              ],
+            ),
+          ),
+
+          // Clear queue button
+          if (queueData.hasNextTracks)
+            TextButton.icon(
+              onPressed: () => _showClearQueueDialog(queueData),
+              icon: const Icon(
+                Icons.clear_all,
+                size: 18,
+                color: AppColors.rouge,
+              ),
+              label: const Text(
+                'Clear',
+                style: TextStyle(
+                  color: AppColors.rouge,
+                  fontSize: 14,
+                  fontWeight: FontWeight.w500,
+                ),
+              ),
+              style: TextButton.styleFrom(
+                padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
+                backgroundColor: AppColors.rouge.withOpacity(0.1),
+                shape: RoundedRectangleBorder(
+                  borderRadius: BorderRadius.circular(8),
+                ),
+              ),
+            ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildNowPlayingSection(QueueViewData queueData) {
+    final currentTrack = queueData.currentTrack;
+
+    if (currentTrack == null) {
+      return const SizedBox.shrink();
+    }
+
+    return Container(
+      margin: const EdgeInsets.all(16),
+      padding: const EdgeInsets.all(16),
+      decoration: BoxDecoration(
+        gradient: LinearGradient(
+          begin: Alignment.topLeft,
+          end: Alignment.bottomRight,
+          colors: [
+            AppColors.surfaceVariant,
+            AppColors.surfaceElevated,
+          ],
+        ),
+        borderRadius: BorderRadius.circular(16),
+        border: Border.all(
+          color: AppColors.cyan.withOpacity(0.3),
+          width: 1,
+        ),
+        boxShadow: [
+          BoxShadow(
+            color: AppColors.cyan.withOpacity(0.1),
+            blurRadius: 20,
+            spreadRadius: 2,
+          ),
+        ],
+      ),
+      child: Column(
+        children: [
+          // Section label
+          Row(
+            children: [
+              Container(
+                padding: const EdgeInsets.symmetric(
+                  horizontal: 8,
+                  vertical: 4,
+                ),
+                decoration: BoxDecoration(
+                  color: AppColors.cyan.withOpacity(0.2),
+                  borderRadius: BorderRadius.circular(6),
+                ),
+                child: const Text(
+                  'NOW PLAYING',
+                  style: TextStyle(
+                    color: AppColors.cyan,
+                    fontSize: 10,
+                    fontWeight: FontWeight.w600,
+                    letterSpacing: 1,
+                  ),
+                ),
+              ),
+              const Spacer(),
+              _buildPlayingIndicator(queueData.isPlaying),
+            ],
+          ),
+
+          const SizedBox(height: 16),
+
+          // Track info
+          Row(
+            children: [
+              // Album art
+              _buildLargeAlbumArt(currentTrack),
+
+              const SizedBox(width: 16),
+
+              // Track details
+              Expanded(
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Text(
+                      currentTrack.title,
+                      style: const TextStyle(
+                        color: AppColors.onSurface,
+                        fontSize: 16,
+                        fontWeight: FontWeight.w600,
+                      ),
+                      maxLines: 2,
+                      overflow: TextOverflow.ellipsis,
+                    ),
+                    const SizedBox(height: 4),
+                    Text(
+                      currentTrack.artist?.name ?? 'Unknown Artist',
+                      style: const TextStyle(
+                        color: AppColors.muted,
+                        fontSize: 14,
+                      ),
+                      maxLines: 1,
+                      overflow: TextOverflow.ellipsis,
+                    ),
+                    const SizedBox(height: 8),
+                    Row(
+                      children: [
+                        _buildControlButton(
+                          icon: Icons.skip_previous,
+                          onTap: () => _playPrevious(),
+                        ),
+                        const SizedBox(width: 12),
+                        _buildPlayPauseButton(queueData.isPlaying),
+                        const SizedBox(width: 12),
+                        _buildControlButton(
+                          icon: Icons.skip_next,
+                          onTap: () => _playNext(),
+                        ),
+                      ],
+                    ),
+                  ],
+                ),
+              ),
+            ],
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildLargeAlbumArt(Track track) {
+    return Container(
+      width: 80,
+      height: 80,
+      decoration: BoxDecoration(
+        gradient: AppColors.accentGradient,
+        borderRadius: BorderRadius.circular(12),
+        boxShadow: AppColors.violetGlow,
+      ),
+      child: ClipRRect(
+        borderRadius: BorderRadius.circular(12),
+        child: track.imageUrl != null
+            ? Image.network(
+                track.imageUrl!,
+                fit: BoxFit.cover,
+                errorBuilder: (context, error, stackTrace) {
+                  return const Icon(
+                    Icons.music_note,
+                    color: AppColors.onBackground,
+                    size: 40,
+                  );
+                },
+              )
+            : const Icon(
+                Icons.music_note,
+                color: AppColors.onBackground,
+                size: 40,
+              ),
+      ),
+    );
+  }
+
+  Widget _buildPlayingIndicator(bool isPlaying) {
+    if (!isPlaying) {
+      return const SizedBox.shrink();
+    }
+
+    return Row(
+      children: [
+        Container(
+          width: 6,
+          height: 6,
+          decoration: const BoxDecoration(
+            color: AppColors.vert,
+            shape: BoxShape.circle,
+            boxShadow: [
+              BoxShadow(
+                color: AppColors.vert,
+                blurRadius: 8,
+                spreadRadius: 2,
+              ),
+            ],
+          ),
+        ),
+        const SizedBox(width: 4),
+        const Text(
+          'Playing',
+          style: TextStyle(
+            color: AppColors.vert,
+            fontSize: 11,
+            fontWeight: FontWeight.w500,
+          ),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildControlButton({
+    required IconData icon,
+    required VoidCallback onTap,
+  }) {
+    return MouseRegion(
+      cursor: SystemMouseCursors.click,
+      child: GestureDetector(
+        onTap: onTap,
+        child: Container(
+          padding: const EdgeInsets.all(10),
+          decoration: BoxDecoration(
+            color: AppColors.surfaceElevated,
+            borderRadius: BorderRadius.circular(12),
+          ),
+          child: Icon(
+            icon,
+            color: AppColors.onSurface,
+            size: 24,
+          ),
+        ),
+      ),
+    );
+  }
+
+  Widget _buildPlayPauseButton(bool isPlaying) {
+    return MouseRegion(
+      cursor: SystemMouseCursors.click,
+      child: GestureDetector(
+        onTap: () => _togglePlayPause(isPlaying),
+        child: Container(
+          padding: const EdgeInsets.all(12),
+          decoration: BoxDecoration(
+            gradient: AppColors.primaryGradient,
+            borderRadius: BorderRadius.circular(12),
+            boxShadow: AppColors.cyanGlow,
+          ),
+          child: Icon(
+            isPlaying ? Icons.pause : Icons.play_arrow,
+            color: AppColors.primary,
+            size: 28,
+          ),
+        ),
+      ),
+    );
+  }
+
+  Widget _buildQueueSection(QueueViewData queueData) {
+    if (!queueData.hasNextTracks) {
+      return const SizedBox.shrink();
+    }
+
+    return Column(
+      children: [
+        // Queue header
+        Padding(
+          padding: const EdgeInsets.symmetric(horizontal: 16),
+          child: Row(
+            children: [
+              Container(
+                padding: const EdgeInsets.symmetric(
+                  horizontal: 8,
+                  vertical: 4,
+                ),
+                decoration: BoxDecoration(
+                  color: AppColors.violet.withOpacity(0.2),
+                  borderRadius: BorderRadius.circular(6),
+                ),
+                child: const Text(
+                  'NEXT UP',
+                  style: TextStyle(
+                    color: AppColors.violet,
+                    fontSize: 10,
+                    fontWeight: FontWeight.w600,
+                    letterSpacing: 1,
+                  ),
+                ),
+              ),
+              const SizedBox(width: 8),
+              Text(
+                '${queueData.nextTracks.length} tracks',
+                style: const TextStyle(
+                  color: AppColors.muted,
+                  fontSize: 12,
+                ),
+              ),
+            ],
+          ),
+        ),
+
+        const SizedBox(height: 8),
+
+        // Queue list
+        Expanded(
+          child: ReorderableListView.builder(
+            padding: const EdgeInsets.only(bottom: 16),
+            itemCount: queueData.nextTracks.length,
+            onReorder: (oldIndex, newIndex) {
+              _reorderQueue(oldIndex, newIndex, queueData);
+            },
+            itemBuilder: (context, index) {
+              final track = queueData.nextTracks[index];
+              final actualIndex = queueData.currentIndex + 1 + index;
+
+              return Dismissible(
+                key: Key('queue_${track.id}_$index'),
+                direction: DismissDirection.endToStart,
+                onDismissed: (direction) {
+                  _removeFromQueue(actualIndex);
+                },
+                background: Container(
+                  margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
+                  decoration: BoxDecoration(
+                    color: AppColors.rouge,
+                    borderRadius: BorderRadius.circular(12),
+                  ),
+                  alignment: Alignment.centerRight,
+                  padding: const EdgeInsets.only(right: 20),
+                  child: const Icon(
+                    Icons.delete,
+                    color: AppColors.primary,
+                  ),
+                ),
+                child: QueueTrackTile(
+                  key: Key('queue_${track.id}_$index'),
+                  track: track,
+                  index: index,
+                  onTap: () => _playTrack(actualIndex),
+                  onRemove: () => _removeFromQueue(actualIndex),
+                ),
+              );
+            },
+          ),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildEmptyQueue() {
+    return Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Container(
+            width: 120,
+            height: 120,
+            decoration: BoxDecoration(
+              gradient: LinearGradient(
+                begin: Alignment.topLeft,
+                end: Alignment.bottomRight,
+                colors: [
+                  AppColors.cyan.withOpacity(0.2),
+                  AppColors.violet.withOpacity(0.2),
+                ],
+              ),
+              borderRadius: BorderRadius.circular(30),
+            ),
+            child: const Icon(
+              Icons.queue_music,
+              color: AppColors.muted,
+              size: 60,
+            ),
+          ),
+          const SizedBox(height: 24),
+          const Text(
+            'Queue is empty',
+            style: TextStyle(
+              color: AppColors.onSurface,
+              fontSize: 20,
+              fontWeight: FontWeight.w600,
+            ),
+          ),
+          const SizedBox(height: 8),
+          const Text(
+            'Add tracks to build your queue',
+            style: TextStyle(
+              color: AppColors.muted,
+              fontSize: 14,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  void _togglePlayPause(bool isPlaying) {
+    final notifier = ref.read(playerProvider.notifier);
+    if (isPlaying) {
+      notifier.pause();
+    } else {
+      notifier.play();
+    }
+  }
+
+  void _playNext() {
+    ref.read(playerProvider.notifier).next();
+  }
+
+  void _playPrevious() {
+    ref.read(playerProvider.notifier).previous();
+  }
+
+  void _playTrack(int index) {
+    final queueData = ref.read(queueProvider);
+    final track = queueData.queue[index];
+
+    ref.read(playerProvider.notifier).loadTrack(track).then((_) {
+      ref.read(playerProvider.notifier).play();
+    });
+  }
+
+  void _removeFromQueue(int index) {
+    ref.read(playerProvider.notifier).removeFromQueue(index);
+
+    ScaffoldMessenger.of(context).showSnackBar(
+      SnackBar(
+        content: const Text('Removed from queue'),
+        backgroundColor: AppColors.surfaceElevated,
+        behavior: SnackBarBehavior.floating,
+        shape: RoundedRectangleBorder(
+          borderRadius: BorderRadius.circular(8),
+        ),
+        duration: const Duration(seconds: 2),
+      ),
+    );
+  }
+
+  void _reorderQueue(int oldIndex, int newIndex, QueueViewData queueData) {
+    if (oldIndex == newIndex) return;
+
+    // Adjust for the actual queue position
+    final actualOldIndex = queueData.currentIndex + 1 + oldIndex;
+    int actualNewIndex = queueData.currentIndex + 1 + newIndex;
+
+    if (newIndex > oldIndex) {
+      actualNewIndex--;
+    }
+
+    final notifier = ref.read(playerProvider.notifier);
+    final queue = List<Track>.from(queueData.queue);
+    final item = queue.removeAt(actualOldIndex);
+    queue.insert(actualNewIndex, item);
+
+    notifier.setQueue(queue, startIndex: queueData.currentIndex);
+  }
+
+  void _showClearQueueDialog(QueueViewData queueData) {
+    showDialog(
+      context: context,
+      builder: (context) => AlertDialog(
+        backgroundColor: AppColors.surface,
+        shape: RoundedRectangleBorder(
+          borderRadius: BorderRadius.circular(16),
+        ),
+        title: const Text(
+          'Clear Queue?',
+          style: TextStyle(
+            color: AppColors.onSurface,
+            fontSize: 18,
+            fontWeight: FontWeight.w600,
+          ),
+        ),
+        content: Text(
+          'Remove all ${queueData.nextTracks.length} upcoming tracks from the queue?',
+          style: const TextStyle(
+            color: AppColors.muted,
+            fontSize: 14,
+          ),
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.of(context).pop(),
+            child: const Text(
+              'Cancel',
+              style: TextStyle(
+                color: AppColors.muted,
+                fontSize: 14,
+                fontWeight: FontWeight.w500,
+              ),
+            ),
+          ),
+          TextButton(
+            onPressed: () {
+              _clearQueue(queueData);
+              Navigator.of(context).pop();
+            },
+            style: TextButton.styleFrom(
+              backgroundColor: AppColors.rouge.withOpacity(0.2),
+              shape: RoundedRectangleBorder(
+                borderRadius: BorderRadius.circular(8),
+              ),
+            ),
+            child: const Text(
+              'Clear',
+              style: TextStyle(
+                color: AppColors.rouge,
+                fontSize: 14,
+                fontWeight: FontWeight.w600,
+              ),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  void _clearQueue(QueueViewData queueData) {
+    if (queueData.currentTrack == null) return;
+
+    // Keep only the current track
+    ref.read(playerProvider.notifier).setQueue(
+          [queueData.currentTrack!],
+          startIndex: 0,
+        );
+
+    ScaffoldMessenger.of(context).showSnackBar(
+      const SnackBar(
+        content: Text('Queue cleared'),
+        backgroundColor: AppColors.surfaceElevated,
+        behavior: SnackBarBehavior.floating,
+        shape: RoundedRectangleBorder(
+          borderRadius: BorderRadius.circular(8),
+        ),
+        duration: Duration(seconds: 2),
+      ),
+    );
+  }
+}

frontend/lib/presentation/pages/playlist/playlist_desktop_page.dart

@@ -0,0 +1,537 @@
+/// Playlist Details Page - Desktop layout
+library;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../../domain/entities/playlist.dart';
+import '../../../../domain/entities/track.dart';
+import '../../../../core/theme/colors.dart';
+import '../../../providers/playlist_provider.dart';
+import '../../../providers/music_provider.dart';
+import '../../../providers/auth_provider.dart';
+import '../../widgets/playlist/playlist_track_tile.dart';
+import '../../widgets/common/cached_network_image_with_fallback.dart';
+
+class PlaylistDesktopPage extends ConsumerStatefulWidget {
+  final String playlistId;
+
+  const PlaylistDesktopPage({
+    required this.playlistId,
+    super.key,
+  });
+
+  @override
+  ConsumerState<PlaylistDesktopPage> createState() => _PlaylistDesktopPageState();
+}
+
+class _PlaylistDesktopPageState extends ConsumerState<PlaylistDesktopPage> {
+  final TextEditingController _nameController = TextEditingController();
+  final TextEditingController _descriptionController = TextEditingController();
+  bool _isEditing = false;
+
+  @override
+  void dispose() {
+    _nameController.dispose();
+    _descriptionController.dispose();
+    super.dispose();
+  }
+
+  void _startEditing(Playlist playlist) {
+    _nameController.text = playlist.name;
+    _descriptionController.text = playlist.description ?? '';
+    setState(() => _isEditing = true);
+  }
+
+  Future<void> _saveEdit() async {
+    final notifier = ref.read(playlistProvider(widget.playlistId).notifier);
+    await notifier.updatePlaylist(
+      name: _nameController.text.trim(),
+      description: _descriptionController.text.trim().isEmpty
+          ? null
+          : _descriptionController.text.trim(),
+    );
+    setState(() => _isEditing = false);
+  }
+
+  void _cancelEdit() {
+    setState(() => _isEditing = false);
+  }
+
+  Future<void> _showDeleteDialog(Playlist playlist) async {
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (context) => AlertDialog(
+        backgroundColor: AppColors.surfaceElevated,
+        shape: RoundedRectangleBorder(
+          borderRadius: BorderRadius.circular(12),
+          side: BorderSide(color: AppColors.rose.withOpacity(0.3)),
+        ),
+        title: Text(
+          'Delete Playlist',
+          style: TextStyle(color: AppColors.rose, fontSize: 20),
+        ),
+        content: Text(
+          'Are you sure you want to delete "${playlist.name}"? This action cannot be undone.',
+          style: TextStyle(color: AppColors.onBackground),
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context, false),
+            child: Text(
+              'Cancel',
+              style: TextStyle(color: AppColors.onSurfaceVariant),
+            ),
+          ),
+          ElevatedButton(
+            onPressed: () => Navigator.pop(context, true),
+            style: ElevatedButton.styleFrom(
+              backgroundColor: AppColors.rose,
+              foregroundColor: Colors.white,
+              shape: RoundedRectangleBorder(
+                borderRadius: BorderRadius.circular(8),
+              ),
+            ),
+            child: const Text('Delete'),
+          ),
+        ],
+      ),
+    );
+
+    if (confirmed == true && mounted) {
+      final notifier = ref.read(playlistProvider(widget.playlistId).notifier);
+      await notifier.deletePlaylist();
+      if (mounted) Navigator.pop(context);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final playlistState = ref.watch(playlistProvider(widget.playlistId));
+    final authState = ref.watch(authProvider);
+    final playerNotifier = ref.read(playerProvider.notifier);
+
+    final playlist = playlistState.playlist;
+    final tracks = playlistState.tracks;
+    final isOwner = authState.user?.id == playlist?.userId;
+
+    if (playlistState.isLoading && playlist == null) {
+      return Scaffold(
+        backgroundColor: AppColors.primary,
+        body: Center(
+          child: CircularProgressIndicator(color: AppColors.cyan),
+        ),
+      );
+    }
+
+    if (playlistState.error != null && playlist == null) {
+      return Scaffold(
+        backgroundColor: AppColors.primary,
+        body: Center(
+          child: Column(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              Icon(Icons.error_outline, color: AppColors.rose, size: 64),
+              const SizedBox(height: 16),
+              Text(
+                playlistState.error!,
+                style: const TextStyle(color: AppColors.rose),
+                textAlign: TextAlign.center,
+              ),
+            ],
+          ),
+        ),
+      );
+    }
+
+    if (playlist == null) {
+      return Scaffold(
+        backgroundColor: AppColors.primary,
+        body: Center(
+          child: Text(
+            'Playlist not found',
+            style: TextStyle(color: AppColors.onBackground, fontSize: 20),
+          ),
+        ),
+      );
+    }
+
+    return Scaffold(
+      backgroundColor: AppColors.primary,
+      body: CustomScrollView(
+        slivers: [
+          // Header with gradient background
+          SliverAppBar(
+            expandedHeight: 300,
+            pinned: true,
+            flexibleSpace: FlexibleSpaceBar(
+              background: Container(
+                decoration: BoxDecoration(
+                  gradient: LinearGradient(
+                    begin: Alignment.topCenter,
+                    end: Alignment.bottomCenter,
+                    colors: [
+                      AppColors.violet.withOpacity(0.3),
+                      AppColors.primary,
+                    ],
+                  ),
+                ),
+                child: SafeArea(
+                  child: Padding(
+                    padding: const EdgeInsets.all(24),
+                    child: Row(
+                      children: [
+                        // Cover image
+                        ClipRRect(
+                          borderRadius: BorderRadius.circular(12),
+                          child: SizedBox(
+                            width: 200,
+                            height: 200,
+                            child: CachedNetworkImageWithFallback(
+                              imageUrl: playlist.imageUrl,
+                              fallbackIcon: Icons.playlist_play,
+                              progressColor: AppColors.cyan,
+                              fit: BoxFit.cover,
+                            ),
+                          ),
+                        ),
+                        const SizedBox(width: 32),
+
+                        // Playlist info
+                        Expanded(
+                          child: Column(
+                            crossAxisAlignment: CrossAxisAlignment.start,
+                            mainAxisAlignment: MainAxisAlignment.end,
+                            children: [
+                              if (_isEditing) ...[
+                                // Edit mode
+                                TextField(
+                                  controller: _nameController,
+                                  style: const TextStyle(
+                                    color: AppColors.onBackground,
+                                    fontSize: 32,
+                                    fontWeight: FontWeight.bold,
+                                  ),
+                                  decoration: InputDecoration(
+                                    border: OutlineInputBorder(
+                                      borderRadius: BorderRadius.circular(8),
+                                      borderSide: BorderSide(
+                                        color: AppColors.cyan.withOpacity(0.5),
+                                      ),
+                                    ),
+                                    focusedBorder: OutlineInputBorder(
+                                      borderRadius: BorderRadius.circular(8),
+                                      borderSide: BorderSide(
+                                        color: AppColors.cyan,
+                                        width: 2,
+                                      ),
+                                    ),
+                                    contentPadding: const EdgeInsets.symmetric(
+                                      horizontal: 16,
+                                      vertical: 12,
+                                    ),
+                                  ),
+                                ),
+                                const SizedBox(height: 12),
+                                TextField(
+                                  controller: _descriptionController,
+                                  style: const TextStyle(
+                                    color: AppColors.onSurface,
+                                    fontSize: 14,
+                                  ),
+                                  maxLines: 3,
+                                  decoration: InputDecoration(
+                                    border: OutlineInputBorder(
+                                      borderRadius: BorderRadius.circular(8),
+                                      borderSide: BorderSide(
+                                        color: AppColors.cyan.withOpacity(0.5),
+                                      ),
+                                    ),
+                                    focusedBorder: OutlineInputBorder(
+                                      borderRadius: BorderRadius.circular(8),
+                                      borderSide: BorderSide(
+                                        color: AppColors.cyan,
+                                        width: 2,
+                                      ),
+                                    ),
+                                    hintText: 'Add a description...',
+                                    hintStyle: TextStyle(
+                                      color: AppColors.onSurfaceVariant,
+                                    ),
+                                    contentPadding: const EdgeInsets.symmetric(
+                                      horizontal: 16,
+                                      vertical: 12,
+                                    ),
+                                  ),
+                                ),
+                                const SizedBox(height: 16),
+                                Row(
+                                  children: [
+                                    ElevatedButton(
+                                      onPressed: _saveEdit,
+                                      style: ElevatedButton.styleFrom(
+                                        backgroundColor: AppColors.cyan,
+                                        foregroundColor: AppColors.primary,
+                                        shape: RoundedRectangleBorder(
+                                          borderRadius: BorderRadius.circular(20),
+                                        ),
+                                      ),
+                                      child: const Text('Save'),
+                                    ),
+                                    const SizedBox(width: 12),
+                                    TextButton(
+                                      onPressed: _cancelEdit,
+                                      child: Text(
+                                        'Cancel',
+                                        style: TextStyle(
+                                          color: AppColors.onSurfaceVariant,
+                                        ),
+                                      ),
+                                    ),
+                                  ],
+                                ),
+                              ] else ...[
+                                // View mode
+                                Text(
+                                  playlist.name,
+                                  style: const TextStyle(
+                                    color: AppColors.onBackground,
+                                    fontSize: 32,
+                                    fontWeight: FontWeight.bold,
+                                  ),
+                                ),
+                                const SizedBox(height: 8),
+                                if (playlist.description != null) ...[
+                                  Text(
+                                    playlist.description!,
+                                    style: const TextStyle(
+                                      color: AppColors.onSurface,
+                                      fontSize: 14,
+                                    ),
+                                    maxLines: 3,
+                                    overflow: TextOverflow.ellipsis,
+                                  ),
+                                  const SizedBox(height: 12),
+                                ],
+                                Row(
+                                  children: [
+                                    Icon(
+                                      playlist.isPublic
+                                          ? Icons.public
+                                          : Icons.lock,
+                                      color: AppColors.onSurfaceVariant,
+                                      size: 16,
+                                    ),
+                                    const SizedBox(width: 8),
+                                    Text(
+                                      '${playlist.trackCount} songs',
+                                      style: const TextStyle(
+                                        color: AppColors.onSurface,
+                                        fontSize: 14,
+                                      ),
+                                    ),
+                                    const SizedBox(width: 16),
+                                    Text(
+                                      playlistState.formattedTotalDuration,
+                                      style: const TextStyle(
+                                        color: AppColors.onSurface,
+                                        fontSize: 14,
+                                      ),
+                                    ),
+                                  ],
+                                ),
+                              ],
+                            ],
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
+                ),
+              ),
+            ),
+          ),
+
+          // Action buttons
+          SliverToBoxAdapter(
+            child: Padding(
+              padding: const EdgeInsets.all(24),
+              child: Row(
+                children: [
+                  // Play button
+                  Container(
+                    decoration: BoxDecoration(
+                      shape: BoxShape.circle,
+                      gradient: AppColors.primaryGradient,
+                      boxShadow: AppColors.cyanGlow,
+                    ),
+                    child: IconButton(
+                      icon: const Icon(Icons.play_arrow, size: 32),
+                      color: AppColors.primary,
+                      onPressed: () {
+                        ref
+                            .read(playlistProvider(widget.playlistId).notifier)
+                            .playPlaylist(playerNotifier);
+                      },
+                    ),
+                  ),
+                  const SizedBox(width: 16),
+
+                  // Shuffle button
+                  Container(
+                    decoration: BoxDecoration(
+                      shape: BoxShape.circle,
+                      color: AppColors.surfaceElevated,
+                      border: Border.all(
+                        color: AppColors.cyan.withOpacity(0.3),
+                      ),
+                    ),
+                    child: IconButton(
+                      icon: const Icon(Icons.shuffle),
+                      color: AppColors.cyan,
+                      onPressed: () {
+                        ref
+                            .read(playlistProvider(widget.playlistId).notifier)
+                            .shufflePlaylist(playerNotifier);
+                      },
+                    ),
+                  ),
+                  const SizedBox(width: 16),
+
+                  // Download button
+                  Container(
+                    decoration: BoxDecoration(
+                      shape: BoxShape.circle,
+                      color: AppColors.surfaceElevated,
+                      border: Border.all(
+                        color: AppColors.cyan.withOpacity(0.3),
+                      ),
+                    ),
+                    child: IconButton(
+                      icon: const Icon(Icons.download),
+                      color: AppColors.cyan,
+                      onPressed: () {
+                        ScaffoldMessenger.of(context).showSnackBar(
+                          SnackBar(
+                            content: Text(
+                              'Download feature coming soon',
+                              style: TextStyle(color: AppColors.primary),
+                            ),
+                            backgroundColor: AppColors.cyan,
+                          ),
+                        );
+                      },
+                    ),
+                  ),
+
+                  const Spacer(),
+
+                  // Edit button (for owner)
+                  if (isOwner && !_isEditing) ...[
+                    ElevatedButton.icon(
+                      onPressed: () => _startEditing(playlist),
+                      icon: const Icon(Icons.edit),
+                      label: const Text('Edit'),
+                      style: ElevatedButton.styleFrom(
+                        backgroundColor: AppColors.surfaceElevated,
+                        foregroundColor: AppColors.cyan,
+                        shape: RoundedRectangleBorder(
+                          borderRadius: BorderRadius.circular(20),
+                          side: BorderSide(
+                            color: AppColors.cyan.withOpacity(0.3),
+                          ),
+                        ),
+                      ),
+                    ),
+                    const SizedBox(width: 12),
+                    IconButton(
+                      icon: Icon(Icons.delete, color: AppColors.rose),
+                      onPressed: () => _showDeleteDialog(playlist),
+                      tooltip: 'Delete playlist',
+                    ),
+                  ],
+                ],
+              ),
+            ),
+          ),
+
+          // Tracks list
+          if (tracks.isEmpty)
+            SliverFillRemaining(
+              child: Center(
+                child: Column(
+                  mainAxisAlignment: MainAxisAlignment.center,
+                  children: [
+                    Icon(
+                      Icons.music_note,
+                      color: AppColors.onSurfaceVariant,
+                      size: 64,
+                    ),
+                    const SizedBox(height: 16),
+                    Text(
+                      'No tracks in this playlist',
+                      style: TextStyle(
+                        color: AppColors.onSurfaceVariant,
+                        fontSize: 18,
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+            )
+          else
+            SliverPadding(
+              padding: const EdgeInsets.fromLTRB(24, 0, 24, 24),
+              sliver: SliverList(
+                delegate: SliverChildBuilderDelegate(
+                  (context, index) {
+                    final track = tracks[index];
+                    return PlaylistTrackTile(
+                      track: track,
+                      position: index,
+                      isOwner: isOwner,
+                      onTap: () {
+                        // Play this track
+                        playerNotifier.setQueue(tracks, startIndex: index);
+                      },
+                      onRemove: isOwner
+                          ? () {
+                              ref
+                                  .read(playlistProvider(widget.playlistId).notifier)
+                                  .removeTrack(track.id);
+                            }
+                          : null,
+                      onAddToQueue: () {
+                        playerNotifier.addToQueue(track);
+                        ScaffoldMessenger.of(context).showSnackBar(
+                          SnackBar(
+                            content: Text(
+                              'Added to queue',
+                              style: TextStyle(color: AppColors.primary),
+                            ),
+                            backgroundColor: AppColors.vert,
+                          ),
+                        );
+                      },
+                    );
+                  },
+                  childCount: tracks.length,
+                ),
+              ),
+            ),
+
+          // Loading indicator for reordering
+          if (playlistState.isReordering)
+            SliverToBoxAdapter(
+              child: Padding(
+                padding: const EdgeInsets.all(16),
+                child: Center(
+                  child: CircularProgressIndicator(color: AppColors.cyan),
+                ),
+              ),
+            ),
+        ],
+      ),
+    );
+  }
+}

frontend/lib/presentation/pages/playlist/playlist_details_page.dart

@@ -0,0 +1,28 @@
+/// Playlist Details Page - Adaptive layout
+library;
+
+import 'package:flutter/material.dart';
+import 'playlist_desktop_page.dart';
+import 'playlist_mobile_page.dart';
+
+class PlaylistDetailsPage extends StatelessWidget {
+  final String playlistId;
+
+  const PlaylistDetailsPage({
+    required this.playlistId,
+    super.key,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return LayoutBuilder(
+      builder: (context, constraints) {
+        if (constraints.maxWidth >= 800) {
+          return PlaylistDesktopPage(playlistId: playlistId);
+        } else {
+          return PlaylistMobilePage(playlistId: playlistId);
+        }
+      },
+    );
+  }
+}

frontend/lib/presentation/pages/playlist/playlist_mobile_page.dart

@@ -0,0 +1,565 @@
+/// Playlist Details Page - Mobile layout
+library;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../../domain/entities/playlist.dart';
+import '../../../../core/theme/colors.dart';
+import '../../../providers/playlist_provider.dart';
+import '../../../providers/music_provider.dart';
+import '../../../providers/auth_provider.dart';
+import '../../widgets/playlist/playlist_track_tile.dart';
+import '../../widgets/common/cached_network_image_with_fallback.dart';
+
+class PlaylistMobilePage extends ConsumerStatefulWidget {
+  final String playlistId;
+
+  const PlaylistMobilePage({
+    required this.playlistId,
+    super.key,
+  });
+
+  @override
+  ConsumerState<PlaylistMobilePage> createState() => _PlaylistMobilePageState();
+}
+
+class _PlaylistMobilePageState extends ConsumerState<PlaylistMobilePage> {
+  final TextEditingController _nameController = TextEditingController();
+  final TextEditingController _descriptionController = TextEditingController();
+  bool _isEditing = false;
+
+  @override
+  void dispose() {
+    _nameController.dispose();
+    _descriptionController.dispose();
+    super.dispose();
+  }
+
+  void _startEditing(Playlist playlist) {
+    _nameController.text = playlist.name;
+    _descriptionController.text = playlist.description ?? '';
+    setState(() => _isEditing = true);
+  }
+
+  Future<void> _saveEdit() async {
+    final notifier = ref.read(playlistProvider(widget.playlistId).notifier);
+    await notifier.updatePlaylist(
+      name: _nameController.text.trim(),
+      description: _descriptionController.text.trim().isEmpty
+          ? null
+          : _descriptionController.text.trim(),
+    );
+    setState(() => _isEditing = false);
+  }
+
+  void _cancelEdit() {
+    setState(() => _isEditing = false);
+  }
+
+  Future<void> _showDeleteDialog(Playlist playlist) async {
+    final confirmed = await showDialog<bool>(
+      context: context,
+      builder: (context) => AlertDialog(
+        backgroundColor: AppColors.surfaceElevated,
+        shape: RoundedRectangleBorder(
+          borderRadius: BorderRadius.circular(12),
+          side: BorderSide(color: AppColors.rose.withOpacity(0.3)),
+        ),
+        title: Text(
+          'Delete Playlist',
+          style: TextStyle(color: AppColors.rose, fontSize: 20),
+        ),
+        content: Text(
+          'Are you sure you want to delete "${playlist.name}"?',
+          style: TextStyle(color: AppColors.onBackground),
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context, false),
+            child: Text(
+              'Cancel',
+              style: TextStyle(color: AppColors.onSurfaceVariant),
+            ),
+          ),
+          ElevatedButton(
+            onPressed: () => Navigator.pop(context, true),
+            style: ElevatedButton.styleFrom(
+              backgroundColor: AppColors.rose,
+              foregroundColor: Colors.white,
+            ),
+            child: const Text('Delete'),
+          ),
+        ],
+      ),
+    );
+
+    if (confirmed == true && mounted) {
+      final notifier = ref.read(playlistProvider(widget.playlistId).notifier);
+      await notifier.deletePlaylist();
+      if (mounted) Navigator.pop(context);
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final playlistState = ref.watch(playlistProvider(widget.playlistId));
+    final authState = ref.watch(authProvider);
+    final playerNotifier = ref.read(playerProvider.notifier);
+
+    final playlist = playlistState.playlist;
+    final tracks = playlistState.tracks;
+    final isOwner = authState.user?.id == playlist?.userId;
+
+    if (playlistState.isLoading && playlist == null) {
+      return Scaffold(
+        backgroundColor: AppColors.primary,
+        body: Center(
+          child: CircularProgressIndicator(color: AppColors.cyan),
+        ),
+      );
+    }
+
+    if (playlistState.error != null && playlist == null) {
+      return Scaffold(
+        backgroundColor: AppColors.primary,
+        appBar: AppBar(
+          backgroundColor: AppColors.primary,
+          elevation: 0,
+        ),
+        body: Center(
+          child: Column(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              Icon(Icons.error_outline, color: AppColors.rose, size: 64),
+              const SizedBox(height: 16),
+              Text(
+                playlistState.error!,
+                style: const TextStyle(color: AppColors.rose),
+                textAlign: TextAlign.center,
+              ),
+            ],
+          ),
+        ),
+      );
+    }
+
+    if (playlist == null) {
+      return Scaffold(
+        backgroundColor: AppColors.primary,
+        appBar: AppBar(
+          backgroundColor: AppColors.primary,
+          elevation: 0,
+        ),
+        body: Center(
+          child: Text(
+            'Playlist not found',
+            style: TextStyle(color: AppColors.onBackground, fontSize: 18),
+          ),
+        ),
+      );
+    }
+
+    return Scaffold(
+      backgroundColor: AppColors.primary,
+      body: CustomScrollView(
+        slivers: [
+          // App bar
+          SliverAppBar(
+            backgroundColor: AppColors.primary,
+            expandedHeight: 320,
+            pinned: true,
+            flexibleSpace: FlexibleSpaceBar(
+              background: Container(
+                decoration: BoxDecoration(
+                  gradient: LinearGradient(
+                    begin: Alignment.topCenter,
+                    end: Alignment.bottomCenter,
+                    colors: [
+                      AppColors.violet.withOpacity(0.3),
+                      AppColors.primary,
+                    ],
+                  ),
+                ),
+                child: Column(
+                  children: [
+                    const SizedBox(height: kToolbarHeight * 2),
+                    // Cover image
+                    ClipRRect(
+                      borderRadius: BorderRadius.circular(12),
+                      child: SizedBox(
+                        width: 200,
+                        height: 200,
+                        child: CachedNetworkImageWithFallback(
+                          imageUrl: playlist.imageUrl,
+                          fallbackIcon: Icons.playlist_play,
+                          progressColor: AppColors.cyan,
+                          fit: BoxFit.cover,
+                        ),
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+            ),
+          ),
+
+          // Playlist info and actions
+          SliverToBoxAdapter(
+            child: Padding(
+              padding: const EdgeInsets.all(16),
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  // Title and edit
+                  if (_isEditing) ...[
+                    TextField(
+                      controller: _nameController,
+                      style: const TextStyle(
+                        color: AppColors.onBackground,
+                        fontSize: 24,
+                        fontWeight: FontWeight.bold,
+                      ),
+                      decoration: InputDecoration(
+                        border: OutlineInputBorder(
+                          borderRadius: BorderRadius.circular(8),
+                          borderSide: BorderSide(
+                            color: AppColors.cyan.withOpacity(0.5),
+                          ),
+                        ),
+                        focusedBorder: OutlineInputBorder(
+                          borderRadius: BorderRadius.circular(8),
+                          borderSide: BorderSide(
+                            color: AppColors.cyan,
+                            width: 2,
+                          ),
+                        ),
+                        contentPadding: const EdgeInsets.symmetric(
+                          horizontal: 12,
+                          vertical: 8,
+                        ),
+                      ),
+                    ),
+                    const SizedBox(height: 12),
+                    TextField(
+                      controller: _descriptionController,
+                      style: const TextStyle(
+                        color: AppColors.onSurface,
+                        fontSize: 14,
+                      ),
+                      maxLines: 3,
+                      decoration: InputDecoration(
+                        border: OutlineInputBorder(
+                          borderRadius: BorderRadius.circular(8),
+                          borderSide: BorderSide(
+                            color: AppColors.cyan.withOpacity(0.5),
+                          ),
+                        ),
+                        focusedBorder: OutlineInputBorder(
+                          borderRadius: BorderRadius.circular(8),
+                          borderSide: BorderSide(
+                            color: AppColors.cyan,
+                            width: 2,
+                          ),
+                        ),
+                        hintText: 'Add a description...',
+                        hintStyle: TextStyle(
+                          color: AppColors.onSurfaceVariant,
+                        ),
+                        contentPadding: const EdgeInsets.symmetric(
+                          horizontal: 12,
+                          vertical: 8,
+                        ),
+                      ),
+                    ),
+                    const SizedBox(height: 16),
+                    Row(
+                      children: [
+                        ElevatedButton(
+                          onPressed: _saveEdit,
+                          style: ElevatedButton.styleFrom(
+                            backgroundColor: AppColors.cyan,
+                            foregroundColor: AppColors.primary,
+                            shape: RoundedRectangleBorder(
+                              borderRadius: BorderRadius.circular(20),
+                            ),
+                          ),
+                          child: const Text('Save'),
+                        ),
+                        const SizedBox(width: 12),
+                        TextButton(
+                          onPressed: _cancelEdit,
+                          child: Text(
+                            'Cancel',
+                            style: TextStyle(
+                              color: AppColors.onSurfaceVariant,
+                            ),
+                          ),
+                        ),
+                      ],
+                    ),
+                  ] else ...[
+                    Text(
+                      playlist.name,
+                      style: const TextStyle(
+                        color: AppColors.onBackground,
+                        fontSize: 24,
+                        fontWeight: FontWeight.bold,
+                      ),
+                    ),
+                    const SizedBox(height: 8),
+                    if (playlist.description != null) ...[
+                      Text(
+                        playlist.description!,
+                        style: const TextStyle(
+                          color: AppColors.onSurface,
+                          fontSize: 14,
+                        ),
+                        maxLines: 2,
+                        overflow: TextOverflow.ellipsis,
+                      ),
+                      const SizedBox(height: 8),
+                    ],
+                    Row(
+                      children: [
+                        Icon(
+                          playlist.isPublic ? Icons.public : Icons.lock,
+                          color: AppColors.onSurfaceVariant,
+                          size: 14,
+                        ),
+                        const SizedBox(width: 4),
+                        Text(
+                          '${playlist.trackCount} songs • ${playlistState.formattedTotalDuration}',
+                          style: const TextStyle(
+                            color: AppColors.onSurfaceVariant,
+                            fontSize: 13,
+                          ),
+                        ),
+                      ],
+                    ),
+                  ],
+
+                  const SizedBox(height: 16),
+
+                  // Action buttons
+                  Row(
+                    children: [
+                      // Play button
+                      Expanded(
+                        child: Container(
+                          decoration: BoxDecoration(
+                            gradient: AppColors.primaryGradient,
+                            borderRadius: BorderRadius.circular(24),
+                            boxShadow: AppColors.cyanGlow,
+                          ),
+                          child: ElevatedButton.icon(
+                            onPressed: () {
+                              ref
+                                  .read(
+                                      playlistProvider(widget.playlistId).notifier)
+                                  .playPlaylist(playerNotifier);
+                            },
+                            icon: const Icon(Icons.play_arrow),
+                            label: const Text('Play'),
+                            style: ElevatedButton.styleFrom(
+                              backgroundColor: Colors.transparent,
+                              foregroundColor: AppColors.primary,
+                              shadowColor: Colors.transparent,
+                              shape: RoundedRectangleBorder(
+                                borderRadius: BorderRadius.circular(24),
+                              ),
+                            ),
+                          ),
+                        ),
+                      ),
+                      const SizedBox(width: 12),
+
+                      // Shuffle button
+                      Container(
+                        decoration: BoxDecoration(
+                          shape: BoxShape.circle,
+                          color: AppColors.surfaceElevated,
+                          border: Border.all(
+                            color: AppColors.cyan.withOpacity(0.3),
+                          ),
+                        ),
+                        child: IconButton(
+                          icon: const Icon(Icons.shuffle),
+                          color: AppColors.cyan,
+                          onPressed: () {
+                            ref
+                                .read(
+                                    playlistProvider(widget.playlistId).notifier)
+                                .shufflePlaylist(playerNotifier);
+                          },
+                        ),
+                      ),
+
+                      // Download button
+                      const SizedBox(width: 8),
+                      Container(
+                        decoration: BoxDecoration(
+                          shape: BoxShape.circle,
+                          color: AppColors.surfaceElevated,
+                          border: Border.all(
+                            color: AppColors.cyan.withOpacity(0.3),
+                          ),
+                        ),
+                        child: IconButton(
+                          icon: const Icon(Icons.download),
+                          color: AppColors.cyan,
+                          onPressed: () {
+                            ScaffoldMessenger.of(context).showSnackBar(
+                              SnackBar(
+                                content: Text(
+                                  'Download feature coming soon',
+                                  style: TextStyle(color: AppColors.primary),
+                                ),
+                                backgroundColor: AppColors.cyan,
+                              ),
+                            );
+                          },
+                        ),
+                      ),
+
+                      const Spacer(),
+
+                      // Edit button (for owner)
+                      if (isOwner && !_isEditing) ...[
+                        IconButton(
+                          icon: Icon(Icons.edit, color: AppColors.cyan),
+                          onPressed: () => _startEditing(playlist),
+                        ),
+                        IconButton(
+                          icon: Icon(Icons.delete, color: AppColors.rose),
+                          onPressed: () => _showDeleteDialog(playlist),
+                        ),
+                      ],
+                    ],
+                  ),
+
+                  const SizedBox(height: 16),
+
+                  // Divider
+                  Container(
+                    height: 1,
+                    decoration: BoxDecoration(
+                      gradient: LinearGradient(
+                        colors: [
+                          Colors.transparent,
+                          AppColors.cyan.withOpacity(0.3),
+                          Colors.transparent,
+                        ],
+                      ),
+                    ),
+                  ),
+                ],
+              ),
+            ),
+          ),
+
+          // Tracks list
+          if (tracks.isEmpty)
+            SliverFillRemaining(
+              child: Center(
+                child: Column(
+                  mainAxisAlignment: MainAxisAlignment.center,
+                  children: [
+                    Icon(
+                      Icons.music_note,
+                      color: AppColors.onSurfaceVariant,
+                      size: 64,
+                    ),
+                    const SizedBox(height: 16),
+                    Text(
+                      'No tracks in this playlist',
+                      style: TextStyle(
+                        color: AppColors.onSurfaceVariant,
+                        fontSize: 16,
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+            )
+          else
+            SliverReorderableList(
+              delegate: ReorderableChildBuilderDelegate(
+                childCount: tracks.length,
+                (context, index) {
+                  final track = tracks[index];
+                  return Dismissible(
+                    key: ValueKey(track.id),
+                    direction: isOwner
+                        ? DismissDirection.endToStart
+                        : DismissDirection.none,
+                    onDismissed: (_) {
+                      if (isOwner) {
+                        ref
+                            .read(playlistProvider(widget.playlistId).notifier)
+                            .removeTrack(track.id);
+                      }
+                    },
+                    background: Container(
+                      alignment: Alignment.centerRight,
+                      padding: const EdgeInsets.only(right: 20),
+                      decoration: BoxDecoration(
+                        color: AppColors.rose.withOpacity(0.3),
+                        borderRadius: BorderRadius.circular(8),
+                      ),
+                      child: Icon(Icons.delete, color: AppColors.rose),
+                    ),
+                    child: PlaylistTrackTile(
+                      track: track,
+                      position: index,
+                      isOwner: isOwner,
+                      onTap: () {
+                        playerNotifier.setQueue(tracks, startIndex: index);
+                      },
+                      onRemove: isOwner
+                          ? () {
+                              ref
+                                  .read(playlistProvider(widget.playlistId).notifier)
+                                  .removeTrack(track.id);
+                            }
+                          : null,
+                      onAddToQueue: () {
+                        playerNotifier.addToQueue(track);
+                        ScaffoldMessenger.of(context).showSnackBar(
+                          SnackBar(
+                            content: Text(
+                              'Added to queue',
+                              style: TextStyle(color: AppColors.primary),
+                            ),
+                            backgroundColor: AppColors.vert,
+                          ),
+                        );
+                      },
+                    ),
+                  );
+                },
+              ),
+              onReorder: isOwner
+                  ? (oldIndex, newIndex) {
+                      ref
+                          .read(playlistProvider(widget.playlistId).notifier)
+                          .reorderTracks(oldIndex, newIndex);
+                    }
+                  : (_, __) {},
+            ),
+
+          // Loading indicator for reordering
+          if (playlistState.isReordering)
+            SliverToBoxAdapter(
+              child: Padding(
+                padding: const EdgeInsets.all(16),
+                child: Center(
+                  child: CircularProgressIndicator(color: AppColors.cyan),
+                ),
+              ),
+            ),
+        ],
+      ),
+    );
+  }
+}

frontend/lib/presentation/pages/search/search_desktop_page.dart

@@ -0,0 +1,288 @@
+/// Search Page - Desktop Layout
+library;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../core/theme/colors.dart';
+import '../../providers/search_provider.dart';
+import '../../providers/music_provider.dart';
+import '../../../domain/entities/track.dart';
+import '../../../domain/entities/artist.dart';
+import '../../../domain/entities/album.dart';
+import '../../widgets/search/search_track_card.dart';
+import '../../widgets/search/search_artist_card.dart';
+import '../../widgets/search/search_album_card.dart';
+
+class SearchDesktopPage extends ConsumerStatefulWidget {
+  const SearchDesktopPage({super.key});
+
+  @override
+  ConsumerState<SearchDesktopPage> createState() => _SearchDesktopPageState();
+}
+
+class _SearchDesktopPageState extends ConsumerState<SearchDesktopPage> {
+  final _controller = TextEditingController();
+  final _focusNode = FocusNode();
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    _focusNode.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      children: [
+        // Search bar
+        Padding(
+          padding: const EdgeInsets.all(24),
+          child: _buildSearchBar(),
+        ),
+        // Results
+        Expanded(
+          child: _buildResults(),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildSearchBar() {
+    return Container(
+      decoration: BoxDecoration(
+        color: AppColors.surfaceVariant,
+        borderRadius: BorderRadius.circular(28),
+        border: Border.all(
+          color: AppColors.cyan.withOpacity(0.2),
+          width: 2,
+        ),
+      ),
+      child: TextField(
+        controller: _controller,
+        focusNode: _focusNode,
+        style: const TextStyle(color: AppColors.onSurface, fontSize: 16),
+        decoration: InputDecoration(
+          hintText: 'What do you want to listen to?',
+          hintStyle: const TextStyle(color: AppColors.muted),
+          prefixIcon: const Icon(Icons.search, color: AppColors.cyan),
+          suffixIcon: _controller.text.isNotEmpty
+              ? IconButton(
+                  icon: const Icon(Icons.clear, color: AppColors.muted),
+                  onPressed: () {
+                    _controller.clear();
+                    ref.read(searchProvider.notifier).clear();
+                  },
+                )
+              : null,
+          border: InputBorder.none,
+          contentPadding:
+              const EdgeInsets.symmetric(horizontal: 24, vertical: 16),
+        ),
+        onChanged: (value) {
+          ref.read(searchProvider.notifier).search(value);
+          setState(() {});
+        },
+      ),
+    );
+  }
+
+  Widget _buildResults() {
+    final searchState = ref.watch(searchProvider);
+
+    if (searchState.query.isEmpty) {
+      return _buildEmptyState();
+    }
+
+    if (searchState.isSearching) {
+      return const Center(
+        child: CircularProgressIndicator(color: AppColors.cyan),
+      );
+    }
+
+    if (searchState.error != null) {
+      return _buildErrorState(searchState.error ?? 'Unknown error');
+    }
+
+    if (searchState.totalResults == 0) {
+      return _buildNoResultsState();
+    }
+
+    return CustomScrollView(
+      slivers: [
+        // Tracks section
+        if (searchState.tracks.isNotEmpty)
+          SliverToBoxAdapter(
+            child: _buildSection('Tracks', searchState.tracks),
+          ),
+
+        // Artists section
+        if (searchState.artists.isNotEmpty)
+          SliverToBoxAdapter(
+            child: _buildSection('Artists', searchState.artists),
+          ),
+
+        // Albums section
+        if (searchState.albums.isNotEmpty)
+          SliverToBoxAdapter(
+            child: _buildSection('Albums', searchState.albums),
+          ),
+      ],
+    );
+  }
+
+  Widget _buildSection(String title, List<dynamic> items) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Padding(
+          padding: const EdgeInsets.fromLTRB(24, 24, 24, 12),
+          child: Text(
+            title,
+            style: const TextStyle(
+              fontSize: 20,
+              fontWeight: FontWeight.w600,
+              color: AppColors.cyan,
+            ),
+          ),
+        ),
+        GridView.builder(
+          shrinkWrap: true,
+          physics: const NeverScrollableScrollPhysics(),
+          padding: const EdgeInsets.symmetric(horizontal: 24),
+          gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
+            crossAxisCount: 4,
+            mainAxisSpacing: 16,
+            crossAxisSpacing: 16,
+            childAspectRatio: 1,
+          ),
+          itemCount: items.length,
+          itemBuilder: (context, index) {
+            return _buildResultCard(items[index]);
+          },
+        ),
+      ],
+    );
+  }
+
+  Widget _buildResultCard(dynamic item) {
+    final playerNotifier = ref.read(playerProvider.notifier);
+
+    if (item is Track) {
+      // It's a track - play on tap
+      return SearchTrackCard(
+        track: item,
+        onTap: () => _playTrack(item, playerNotifier),
+      );
+    } else if (item is Artist) {
+      // It's an artist - show details (TODO: navigate)
+      return SearchArtistCard(
+        artist: item,
+        onTap: () => _showArtistDetails(item),
+      );
+    } else if (item is Album) {
+      // It's an album - show details (TODO: navigate)
+      return SearchAlbumCard(
+        album: item,
+        onTap: () => _showAlbumDetails(item),
+      );
+    }
+
+    return const SizedBox.shrink();
+  }
+
+  void _playTrack(Track track, PlayerNotifier playerNotifier) {
+    // Set as queue and play
+    playerNotifier.setQueue([track], startIndex: 0);
+    playerNotifier.loadTrack(track);
+    playerNotifier.play();
+  }
+
+  void _showArtistDetails(Artist artist) {
+    // TODO: Navigate to artist details page
+    print('Show artist: ${artist.name}');
+  }
+
+  void _showAlbumDetails(Album album) {
+    // TODO: Navigate to album details page
+    print('Show album: ${album.title}');
+  }
+
+  Widget _buildEmptyState() {
+    return Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Icon(
+            Icons.search,
+            size: 64,
+            color: AppColors.muted,
+          ),
+          const SizedBox(height: 16),
+          const Text(
+            'Search for your favorite music',
+            style: TextStyle(
+              fontSize: 18,
+              color: AppColors.muted,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildErrorState(String error) {
+    return Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Icon(
+            Icons.error_outline,
+            size: 64,
+            color: AppColors.error,
+          ),
+          const SizedBox(height: 16),
+          const Text(
+            'Something went wrong',
+            style: TextStyle(
+              fontSize: 18,
+              color: AppColors.error,
+            ),
+          ),
+          const SizedBox(height: 8),
+          Text(
+            error,
+            style: const TextStyle(
+              fontSize: 14,
+              color: AppColors.muted,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildNoResultsState() {
+    return Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Icon(
+            Icons.music_off,
+            size: 64,
+            color: AppColors.muted,
+          ),
+          const SizedBox(height: 16),
+          const Text(
+            'No results found',
+            style: TextStyle(
+              fontSize: 18,
+              color: AppColors.muted,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

frontend/lib/presentation/pages/search/search_mobile_page.dart

@@ -0,0 +1,279 @@
+/// Search Page - Mobile Layout
+library;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../core/theme/colors.dart';
+import '../../providers/search_provider.dart';
+import '../../providers/music_provider.dart';
+import '../../../domain/entities/track.dart';
+import '../../../domain/entities/artist.dart';
+import '../../../domain/entities/album.dart';
+import '../../widgets/search/search_track_card.dart';
+import '../../widgets/search/search_artist_card.dart';
+import '../../widgets/search/search_album_card.dart';
+
+class SearchMobilePage extends ConsumerStatefulWidget {
+  const SearchMobilePage({super.key});
+
+  @override
+  ConsumerState<SearchMobilePage> createState() => _SearchMobilePageState();
+}
+
+class _SearchMobilePageState extends ConsumerState<SearchMobilePage> {
+  final _controller = TextEditingController();
+  final _focusNode = FocusNode();
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    _focusNode.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      children: [
+        // Search bar
+        Padding(
+          padding: const EdgeInsets.all(16),
+          child: _buildSearchBar(),
+        ),
+        // Results (same as desktop but different layout)
+        Expanded(
+          child: _buildResults(),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildSearchBar() {
+    // Similar to desktop but smaller
+    return Container(
+      decoration: BoxDecoration(
+        color: AppColors.surfaceVariant,
+        borderRadius: BorderRadius.circular(24),
+        border: Border.all(
+          color: AppColors.cyan.withOpacity(0.2),
+          width: 2,
+        ),
+      ),
+      child: TextField(
+        controller: _controller,
+        focusNode: _focusNode,
+        onChanged: (value) {
+          ref.read(searchProvider.notifier).search(value);
+          setState(() {});
+        },
+        decoration: const InputDecoration(
+          hintText: 'Search...',
+          hintStyle: TextStyle(color: AppColors.muted),
+          prefixIcon: Icon(Icons.search, color: AppColors.cyan),
+          border: InputBorder.none,
+          contentPadding: EdgeInsets.symmetric(horizontal: 20, vertical: 14),
+        ),
+      ),
+    );
+  }
+
+  Widget _buildResults() {
+    // Reuse desktop logic but with 2-column grid
+    final searchState = ref.watch(searchProvider);
+
+    if (searchState.query.isEmpty) {
+      return _buildEmptyState();
+    }
+
+    if (searchState.isSearching) {
+      return const Center(
+        child: CircularProgressIndicator(color: AppColors.cyan),
+      );
+    }
+
+    if (searchState.error != null) {
+      return _buildErrorState(searchState.error ?? 'Unknown error');
+    }
+
+    if (searchState.totalResults == 0) {
+      return _buildNoResultsState();
+    }
+
+    return CustomScrollView(
+      slivers: [
+        // Tracks section
+        if (searchState.tracks.isNotEmpty)
+          SliverToBoxAdapter(
+            child: _buildSection('Tracks', searchState.tracks),
+          ),
+
+        // Artists section
+        if (searchState.artists.isNotEmpty)
+          SliverToBoxAdapter(
+            child: _buildSection('Artists', searchState.artists),
+          ),
+
+        // Albums section
+        if (searchState.albums.isNotEmpty)
+          SliverToBoxAdapter(
+            child: _buildSection('Albums', searchState.albums),
+          ),
+      ],
+    );
+  }
+
+  Widget _buildSection(String title, List<dynamic> items) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: [
+        Padding(
+          padding: const EdgeInsets.fromLTRB(16, 16, 16, 8),
+          child: Text(
+            title,
+            style: const TextStyle(
+              fontSize: 18,
+              fontWeight: FontWeight.w600,
+              color: AppColors.cyan,
+            ),
+          ),
+        ),
+        GridView.builder(
+          shrinkWrap: true,
+          physics: const NeverScrollableScrollPhysics(),
+          padding: const EdgeInsets.symmetric(horizontal: 16),
+          gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
+            crossAxisCount: 2,
+            mainAxisSpacing: 12,
+            crossAxisSpacing: 12,
+            childAspectRatio: 1,
+          ),
+          itemCount: items.length,
+          itemBuilder: (context, index) {
+            return _buildResultCard(items[index]);
+          },
+        ),
+      ],
+    );
+  }
+
+  Widget _buildResultCard(dynamic item) {
+    final playerNotifier = ref.read(playerProvider.notifier);
+
+    if (item is Track) {
+      // It's a track - play on tap
+      return SearchTrackCard(
+        track: item,
+        onTap: () => _playTrack(item, playerNotifier),
+      );
+    } else if (item is Artist) {
+      // It's an artist - show details (TODO: navigate)
+      return SearchArtistCard(
+        artist: item,
+        onTap: () => _showArtistDetails(item),
+      );
+    } else if (item is Album) {
+      // It's an album - show details (TODO: navigate)
+      return SearchAlbumCard(
+        album: item,
+        onTap: () => _showAlbumDetails(item),
+      );
+    }
+
+    return const SizedBox.shrink();
+  }
+
+  void _playTrack(Track track, PlayerNotifier playerNotifier) {
+    // Set as queue and play
+    playerNotifier.setQueue([track], startIndex: 0);
+    playerNotifier.loadTrack(track);
+    playerNotifier.play();
+  }
+
+  void _showArtistDetails(Artist artist) {
+    // TODO: Navigate to artist details page
+    print('Show artist: ${artist.name}');
+  }
+
+  void _showAlbumDetails(Album album) {
+    // TODO: Navigate to album details page
+    print('Show album: ${album.title}');
+  }
+
+  Widget _buildEmptyState() {
+    return Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Icon(
+            Icons.search,
+            size: 48,
+            color: AppColors.muted,
+          ),
+          const SizedBox(height: 12),
+          const Text(
+            'Search for your favorite music',
+            style: TextStyle(
+              fontSize: 16,
+              color: AppColors.muted,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildErrorState(String error) {
+    return Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Icon(
+            Icons.error_outline,
+            size: 48,
+            color: AppColors.error,
+          ),
+          const SizedBox(height: 12),
+          const Text(
+            'Something went wrong',
+            style: TextStyle(
+              fontSize: 16,
+              color: AppColors.error,
+            ),
+          ),
+          const SizedBox(height: 8),
+          Text(
+            error,
+            style: const TextStyle(
+              fontSize: 12,
+              color: AppColors.muted,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildNoResultsState() {
+    return Center(
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        children: [
+          Icon(
+            Icons.music_off,
+            size: 48,
+            color: AppColors.muted,
+          ),
+          const SizedBox(height: 12),
+          const Text(
+            'No results found',
+            style: TextStyle(
+              fontSize: 16,
+              color: AppColors.muted,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

frontend/lib/presentation/pages/search/search_page.dart

@@ -0,0 +1,23 @@
+/// Search Page - Adaptive layout
+library;
+
+import 'package:flutter/material.dart';
+import 'search_desktop_page.dart';
+import 'search_mobile_page.dart';
+
+class SearchPage extends StatelessWidget {
+  const SearchPage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return LayoutBuilder(
+      builder: (context, constraints) {
+        if (constraints.maxWidth >= 800) {
+          return const SearchDesktopPage();
+        } else {
+          return const SearchMobilePage();
+        }
+      },
+    );
+  }
+}

frontend/lib/presentation/pages/settings/SETTINGS_PREVIEW.md

@@ -0,0 +1,261 @@
+# Settings Page - Visual Preview & Features
+
+## Visual Design
+
+### Overall Theme
+- **Background**: Deep dark blue (#0A0E27) with neon cyan accents
+- **Cards**: Semi-transparent surfaces with cyan glow borders
+- **Typography**: Outfit font family with neon color highlights
+- **Effects**: Subtle gradients, glow shadows, smooth transitions
+
+## Section Breakdown
+
+### 1. Profile Section (Top)
+```
+┌─────────────────────────────────────────────────┐
+│  ┌────┐  John Doe                   [PREMIUM]  │
+│  │ 👤 │  john.doe@email.com                    │
+│  └────┘  @johndoe                              │
+│                                                  │
+│  [           Edit Profile          ]            │
+└─────────────────────────────────────────────────┘
+```
+
+Features:
+- Circular avatar with gradient glow
+- Premium badge with violet/rose gradient
+- Display name, email, username
+- Edit Profile button (cyan outlined)
+
+### 2. Audio Quality Section
+```
+┌─────────────────────────────────────────────────┐
+│ AUDIO                                           │
+├─────────────────────────────────────────────────┤
+│  🎵 Audio Quality                               │
+│     Higher quality uses more data               │
+│  ────────────────────────────────────────────  │
+│  Low                     [96 kbps] Best for...  │
+│  Medium                  [160 kbps] Good...     │
+│  High                    [320 kbps] Best... ✓   │
+│  Lossless                [FLAC] Requires... [🔒]│
+└─────────────────────────────────────────────────┘
+```
+
+Features:
+- Radio-style selection
+- Bitrate badges
+- Quality descriptions
+- Premium lock on Lossless
+- Selection indicator (cyan checkmark)
+
+### 3. Playback Section
+```
+┌─────────────────────────────────────────────────┐
+│ PLAYBACK                                        │
+├─────────────────────────────────────────────────┤
+│  🎚️  Crossfade                       [○]       │
+│       Smooth transition between tracks          │
+│                                                  │
+│       Crossfade Duration: 5s                    │
+│       ━━━━━━━━●━━━━━━━━━━━━━━━━━━━━━           │
+│                                                  │
+│  ────────────────────────────────────────────  │
+│  ♾️  Gapless Playback               [●]       │
+│       No gap between tracks                     │
+│                                                  │
+│  ────────────────────────────────────────────  │
+│  🔊  Normalize Volume                [○]       │
+│       Set same volume for all tracks            │
+└─────────────────────────────────────────────────┘
+```
+
+Features:
+- Toggle switches with cyan active color
+- Crossfade duration slider (1-12 seconds)
+- Descriptive subtitles
+- Icon indicators
+
+### 4. Downloads Section
+```
+┌─────────────────────────────────────────────────┐
+│ DOWNLOADS                                       │
+├─────────────────────────────────────────────────┤
+│  📥  Download on Mobile Data       [○]          │
+│       May use extra data                         │
+│                                                  │
+│  ────────────────────────────────────────────  │
+│  🔞  Show Explicit Content          [●]          │
+│       Display explicit content in search        │
+└─────────────────────────────────────────────────┘
+```
+
+### 5. Storage Section
+```
+┌─────────────────────────────────────────────────┐
+│  💾  Storage                                     │
+│      Cache and offline data                     │
+│                                                  │
+│  ┌─────────────────────────────────────────┐   │
+│  │ Cache Size                    📁        │   │
+│  │ 245.3 MB                                 │   │
+│  └─────────────────────────────────────────┘   │
+│                                                  │
+│  [        Clear Cache            ]               │
+└─────────────────────────────────────────────────┘
+```
+
+Features:
+- Large cache size display (cyan)
+- Folder icon
+- Clear cache button (rose outlined)
+- Confirmation dialog
+
+### 6. About Section
+```
+┌─────────────────────────────────────────────────┐
+│ ABOUT                                           │
+├─────────────────────────────────────────────────┤
+│  ℹ️  App Version                                 │
+│      1.0.0+1                                    │
+│                                                  │
+│  ────────────────────────────────────────────  │
+│  📄  Licenses                                    │
+│      Open source licenses                       │
+└─────────────────────────────────────────────────┘
+```
+
+### 7. Logout Button
+```
+┌─────────────────────────────────────────────────┐
+│  [  🚪            Log Out            ]          │
+└─────────────────────────────────────────────────┘
+```
+
+Features:
+- Rose outlined button
+- Confirmation dialog
+- Logout icon
+
+## Color Palette
+
+### Primary Colors
+- **Cyan**: #00F0FF (primary accent)
+- **Violet**: #BF00FF (secondary accent)
+- **Rose**: #FF006E (error/danger)
+- **Green**: #39FF14 (success)
+
+### Backgrounds
+- **Primary**: #0A0E27 (main background)
+- **Surface**: #1A1F3A (cards)
+- **Surface Variant**: #252B4A (elevated)
+
+### Text Colors
+- **On Background**: #E0E6FF (primary text)
+- **On Surface**: #B0B8D4 (secondary text)
+- **Muted**: #6A7294 (disabled/hints)
+
+## Interactive Elements
+
+### Toggle Switches
+- Active: Cyan with glow
+- Inactive: Grey
+- Smooth animations
+
+### Buttons
+- **Elevated**: Cyan gradient with glow shadow
+- **Outlined**: Cyan/rose border with transparent bg
+- **Text**: Cyan with underline effect
+
+### Cards
+- 1px cyan border (15% opacity)
+- Subtle glow shadow
+- 16px border radius
+- Smooth hover effects
+
+## Animations
+
+### Page Transitions
+- Smooth slide-in from right
+- Fade-in for content
+- Staggered section animations
+
+### Micro-interactions
+- Ripple effects on taps
+- Scale animations on buttons
+- Color transitions on toggles
+- Slide-up dialogs
+
+## Dialogs
+
+### Edit Profile Dialog
+- Centered, rounded corners
+- Avatar with camera overlay
+- Text input with cyan border
+- Save/Cancel buttons
+
+### Clear Cache Dialog
+- Warning icon (rose)
+- Confirmation text
+- Cancel/Clear buttons
+
+### Logout Dialog
+- Logout icon (rose)
+- Confirmation message
+- Cancel/Logout buttons
+
+## Snackbar Notifications
+
+### Success
+- Green background
+- White text
+- Checkmark icon
+- 3 second duration
+
+### Error
+- Red background
+- White text
+- Error icon
+- Auto-dismiss
+
+### Info
+- Cyan background
+- White text
+- Info icon
+- Extended duration for tips
+
+## Responsive Design
+
+### Mobile (< 600px)
+- Full-width cards
+- 16px horizontal padding
+- Bottom navigation or drawer
+- Compact spacing
+
+### Tablet (600-900px)
+- Centered content (max 600px)
+- Larger touch targets
+- Side navigation optional
+
+### Desktop (> 900px)
+- Centered column (max 800px)
+- Larger fonts
+- Side navigation
+- More spacing
+
+## Accessibility
+
+- High contrast ratios (WCAG AA)
+- Large touch targets (44px min)
+- Clear visual hierarchy
+- Screen reader labels
+- Keyboard navigation support
+- Focus indicators
+
+## Performance
+
+- Lazy loading for images
+- Efficient state management
+- Optimized rebuilds with Riverpod
+- Smooth 60fps animations
+- Minimal memory usage

frontend/lib/presentation/pages/settings/settings_page.dart

@@ -0,0 +1,358 @@
+/// Settings Page
+library;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:package_info_plus/package_info_plus.dart';
+import '../../../core/theme/colors.dart';
+import '../../../core/theme/text_styles.dart';
+import '../../providers/settings_provider.dart';
+import '../../providers/auth_provider.dart';
+import '../../widgets/settings/profile_section.dart';
+import '../../widgets/settings/audio_quality_selector.dart';
+import '../../widgets/settings/cache_management_tile.dart';
+import '../../widgets/settings/settings_tile.dart';
+
+/// Settings page
+class SettingsPage extends ConsumerStatefulWidget {
+  const SettingsPage({super.key});
+
+  @override
+  ConsumerState<SettingsPage> createState() => _SettingsPageState();
+}
+
+class _SettingsPageState extends ConsumerState<SettingsPage> {
+  String _appVersion = '1.0.0';
+
+  @override
+  void initState() {
+    super.initState();
+    _loadAppVersion();
+    // Load settings on init
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      ref.read(settingsProvider.notifier).loadSettings();
+    });
+  }
+
+  Future<void> _loadAppVersion() async {
+    final info = await PackageInfo.fromPlatform();
+    setState(() {
+      _appVersion = '${info.version}+${info.buildNumber}';
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final settingsState = ref.watch(settingsProvider);
+    final authState = ref.watch(authProvider);
+
+    return Scaffold(
+      body: CustomScrollView(
+        slivers: [
+          // App Bar
+          SliverAppBar(
+            floating: true,
+            pinned: true,
+            elevation: 0,
+            backgroundColor: AppColors.primary.withOpacity(0.8),
+            leading: IconButton(
+              icon: const Icon(Icons.arrow_back_ios_new_rounded),
+              onPressed: () => Navigator.pop(context),
+              color: AppColors.onBackground,
+            ),
+            title: Text(
+              'Settings',
+              style: AppTextStyles.h2.copyWith(
+                color: AppColors.onBackground,
+                fontWeight: FontWeight.w700,
+              ),
+            ),
+          ),
+          // Content
+          SliverToBoxAdapter(
+            child: Column(
+              crossAxisAlignment: CrossAxisAlignment.start,
+              children: [
+                const SizedBox(height: 8),
+                // Profile Section
+                const ProfileSection(),
+                const SizedBox(height: 24),
+                // Audio Quality Section
+                const SettingsSectionHeader(title: 'Audio'),
+                const AudioQualitySelector(),
+                // Playback Section
+                const SettingsSectionHeader(title: 'Playback'),
+                SettingsCard(
+                  children: [
+                    SettingsToggleTile(
+                      title: 'Crossfade',
+                      subtitle: 'Smooth transition between tracks',
+                      leading: const Icon(Icons.fade_out),
+                      value: settingsState.crossfadeEnabled,
+                      onChanged: (value) {
+                        ref
+                            .read(settingsProvider.notifier)
+                            .toggleCrossfade(value);
+                      },
+                    ),
+                    if (settingsState.crossfadeEnabled)
+                      Padding(
+                        padding: const EdgeInsets.symmetric(
+                          horizontal: 16,
+                          vertical: 8,
+                        ),
+                        child: Column(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          children: [
+                            Text(
+                              'Crossfade Duration: ${settingsState.crossfadeDuration.toInt()}s',
+                              style: AppTextStyles.bodySmall.copyWith(
+                                color: AppColors.muted,
+                              ),
+                            ),
+                            Slider(
+                              value: settingsState.crossfadeDuration,
+                              min: 1,
+                              max: 12,
+                              divisions: 11,
+                              activeColor: AppColors.cyan,
+                              onChanged: (value) {
+                                ref
+                                    .read(settingsProvider.notifier)
+                                    .setCrossfadeDuration(value);
+                              },
+                            ),
+                          ],
+                        ),
+                      ),
+                    const Divider(height: 1, color: AppColors.surfaceVariant),
+                    SettingsToggleTile(
+                      title: 'Gapless Playback',
+                      subtitle: 'No gap between tracks',
+                      leading: const Icon(Icons.all_inclusive),
+                      value: settingsState.gaplessPlayback,
+                      onChanged: (value) {
+                        ref
+                            .read(settingsProvider.notifier)
+                            .toggleGaplessPlayback(value);
+                      },
+                    ),
+                    const Divider(height: 1, color: AppColors.surfaceVariant),
+                    SettingsToggleTile(
+                      title: 'Normalize Volume',
+                      subtitle: 'Set same volume level for all tracks',
+                      leading: const Icon(Icons.volume_up),
+                      value: settingsState.normalizeVolume,
+                      onChanged: (value) {
+                        ref
+                            .read(settingsProvider.notifier)
+                            .toggleNormalizeVolume(value);
+                      },
+                    ),
+                  ],
+                ),
+                // Downloads Section
+                const SettingsSectionHeader(title: 'Downloads'),
+                SettingsCard(
+                  children: [
+                    SettingsToggleTile(
+                      title: 'Download on Mobile Data',
+                      subtitle: 'May use extra data',
+                      leading: const Icon(Icons.download_done),
+                      value: settingsState.downloadOnMobileData,
+                      onChanged: (value) {
+                        ref
+                            .read(settingsProvider.notifier)
+                            .toggleDownloadOnMobileData(value);
+                      },
+                    ),
+                    const Divider(height: 1, color: AppColors.surfaceVariant),
+                    SettingsToggleTile(
+                      title: 'Show Explicit Content',
+                      subtitle: 'Display explicit content in search',
+                      leading: const Icon(Icons.explicit),
+                      value: settingsState.showExplicitContent,
+                      onChanged: (value) {
+                        ref
+                            .read(settingsProvider.notifier)
+                            .toggleShowExplicitContent(value);
+                      },
+                    ),
+                  ],
+                ),
+                const SizedBox(height: 8),
+                // Cache Management
+                const CacheManagementTile(),
+                const SizedBox(height: 24),
+                // About Section
+                const SettingsSectionHeader(title: 'About'),
+                SettingsCard(
+                  children: [
+                    SettingsTile(
+                      title: 'App Version',
+                      subtitle: _appVersion,
+                      leading: const Icon(Icons.info_outline),
+                    ),
+                    const Divider(height: 1, color: AppColors.surfaceVariant),
+                    SettingsTile(
+                      title: 'Licenses',
+                      subtitle: 'Open source licenses',
+                      leading: const Icon(Icons.description_outlined),
+                      onTap: () {
+                        showLicensePage(
+                          context: context,
+                          applicationName: 'Spotify Le 2',
+                          applicationVersion: _appVersion,
+                          applicationLegalese: '© 2025 Spotify Le 2',
+                        );
+                      },
+                    ),
+                  ],
+                ),
+                const SizedBox(height: 24),
+                // Logout Button
+                Padding(
+                  padding: const EdgeInsets.symmetric(horizontal: 16),
+                  child: SizedBox(
+                    width: double.infinity,
+                    child: OutlinedButton.icon(
+                      onPressed: () => _showLogoutDialog(context, ref),
+                      icon: const Icon(Icons.logout, size: 18),
+                      label: const Text('Log Out'),
+                      style: OutlinedButton.styleFrom(
+                        padding: const EdgeInsets.symmetric(vertical: 14),
+                        side: BorderSide(
+                          color: AppColors.rose.withOpacity(0.5),
+                          width: 1.5,
+                        ),
+                        foregroundColor: AppColors.rose,
+                      ),
+                    ),
+                  ),
+                ),
+                const SizedBox(height: 32),
+                // Error message
+                if (settingsState.error != null)
+                  Container(
+                    margin: const EdgeInsets.symmetric(horizontal: 16),
+                    padding: const EdgeInsets.all(16),
+                    decoration: BoxDecoration(
+                      color: AppColors.error.withOpacity(0.1),
+                      borderRadius: BorderRadius.circular(12),
+                      border: Border.all(
+                        color: AppColors.error.withOpacity(0.3),
+                      ),
+                    ),
+                    child: Row(
+                      children: [
+                        const Icon(
+                          Icons.error_outline,
+                          color: AppColors.error,
+                        ),
+                        const SizedBox(width: 12),
+                        Expanded(
+                          child: Text(
+                            settingsState.error!,
+                            style: AppTextStyles.bodySmall.copyWith(
+                              color: AppColors.error,
+                            ),
+                          ),
+                        ),
+                        IconButton(
+                          onPressed: () {
+                            ref
+                                .read(settingsProvider.notifier)
+                                .copyWith(error: null);
+                          },
+                          icon: const Icon(Icons.close, size: 20),
+                          color: AppColors.error,
+                        ),
+                      ],
+                    ),
+                  ),
+                const SizedBox(height: 24),
+              ],
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+
+  void _showLogoutDialog(BuildContext context, WidgetRef ref) {
+    showDialog(
+      context: context,
+      builder: (context) => AlertDialog(
+        backgroundColor: AppColors.surface,
+        shape: RoundedRectangleBorder(
+          borderRadius: BorderRadius.circular(16),
+          side: BorderSide(
+            color: AppColors.cyan.withOpacity(0.2),
+            width: 1,
+          ),
+        ),
+        title: Row(
+          children: [
+            Container(
+              width: 36,
+              height: 36,
+              decoration: BoxDecoration(
+                color: AppColors.rose.withOpacity(0.1),
+                borderRadius: BorderRadius.circular(8),
+              ),
+              child: const Icon(
+                Icons.logout,
+                color: AppColors.rose,
+                size: 20,
+              ),
+            ),
+            const SizedBox(width: 12),
+            Text(
+              'Log Out',
+              style: AppTextStyles.h3.copyWith(
+                color: AppColors.onBackground,
+              ),
+            ),
+          ],
+        ),
+        content: Text(
+          'Are you sure you want to log out?',
+          style: AppTextStyles.body.copyWith(
+            color: AppColors.onSurface,
+          ),
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context),
+            child: Text(
+              'Cancel',
+              style: AppTextStyles.button.copyWith(
+                color: AppColors.muted,
+              ),
+            ),
+          ),
+          ElevatedButton(
+            onPressed: () async {
+              Navigator.pop(context);
+              await ref.read(authProvider.notifier).logout();
+              if (context.mounted) {
+                Navigator.of(context).pushNamedAndRemoveUntil(
+                  '/login',
+                  (route) => false,
+                );
+              }
+            },
+            style: ElevatedButton.styleFrom(
+              backgroundColor: AppColors.rose,
+              foregroundColor: Colors.white,
+            ),
+            child: Text(
+              'Log Out',
+              style: AppTextStyles.button,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

frontend/lib/presentation/pages/settings/settings_page_example.dart

@@ -0,0 +1,144 @@
+/// Example: How to integrate Settings Page into your app
+
+import 'package:flutter/material.dart';
+import 'package:spotify_le_2/presentation/pages/settings/settings_page.dart';
+
+// Example 1: Navigate from home page
+class HomePage extends StatelessWidget {
+  const HomePage({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('Home'),
+        actions: [
+          IconButton(
+            icon: const Icon(Icons.settings),
+            onPressed: () {
+              Navigator.push(
+                context,
+                MaterialPageRoute(
+                  builder: (context) => const SettingsPage(),
+                ),
+              );
+            },
+          ),
+        ],
+      ),
+      body: const Center(child: Text('Home Page')),
+    );
+  }
+}
+
+// Example 2: Using Go Router
+/*
+In your router configuration:
+
+import 'package:go_router/go_router.dart';
+
+final router = GoRouter(
+  routes: [
+    GoRoute(
+      path: '/',
+      builder: (context, state) => const HomePage(),
+    ),
+    GoRoute(
+      path: '/settings',
+      builder: (context, state) => const SettingsPage(),
+    ),
+  ],
+);
+
+// Then navigate:
+context.push('/settings');
+*/
+
+// Example 3: Bottom navigation bar
+class MainNavigation extends StatefulWidget {
+  const MainNavigation({super.key});
+
+  @override
+  State<MainNavigation> createState() => _MainNavigationState();
+}
+
+class _MainNavigationState extends State<MainNavigation> {
+  int _currentIndex = 0;
+
+  final List<Widget> _pages = [
+    const HomePage(),
+    const SearchPage(),
+    const LibraryPage(),
+    const SettingsPage(), // Settings as a main tab
+  ];
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      body: _pages[_currentIndex],
+      bottomNavigationBar: NavigationBar(
+        currentIndex: _currentIndex,
+        onDestinationSelected: (index) {
+          setState(() {
+            _currentIndex = index;
+          });
+        },
+        destinations: const [
+          NavigationDestination(
+            icon: Icon(Icons.home),
+            label: 'Home',
+          ),
+          NavigationDestination(
+            icon: Icon(Icons.search),
+            label: 'Search',
+          ),
+          NavigationDestination(
+            icon: Icon(Icons.library_music),
+            label: 'Library',
+          ),
+          NavigationDestination(
+            icon: Icon(Icons.settings),
+            label: 'Settings',
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+// Example 4: From a profile button in player widget
+class PlayerWidget extends StatelessWidget {
+  const PlayerWidget({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return GestureDetector(
+      onTap: () => _navigateToSettings(context),
+      child: const CircleAvatar(
+        child: Icon(Icons.person),
+      ),
+    );
+  }
+
+  void _navigateToSettings(BuildContext context) {
+    Navigator.push(
+      context,
+      MaterialPageRoute(
+        builder: (context) => const SettingsPage(),
+      ),
+    );
+  }
+}
+
+// Placeholder classes for example
+class SearchPage extends StatelessWidget {
+  const SearchPage({super.key});
+  @override
+  Widget build(BuildContext context) => const Scaffold(body: Center(child: Text('Search')));
+}
+
+class LibraryPage extends StatelessWidget {
+  const LibraryPage({super.key});
+  @override
+  Widget build(BuildContext context) => const Scaffold(body: Center(child: Text('Library')));
+}

frontend/lib/presentation/providers/album_provider.dart

@@ -0,0 +1,166 @@
+/// Album Provider - Album details state management
+library;
+
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'dart:math';
+
+import '../../../infrastructure/datasources/remote/music_api_service.dart';
+import '../../../domain/entities/album.dart';
+import '../../../domain/entities/track.dart';
+import 'music_provider.dart';
+
+/// Album state
+class AlbumState {
+  final Album? album;
+  final List<Track> tracks;
+  final bool isLoading;
+  final String? error;
+
+  const AlbumState({
+    this.album,
+    this.tracks = const [],
+    this.isLoading = false,
+    this.error,
+  });
+
+  AlbumState copyWith({
+    Album? album,
+    List<Track>? tracks,
+    bool? isLoading,
+    String? error,
+  }) {
+    return AlbumState(
+      album: album ?? this.album,
+      tracks: tracks ?? this.tracks,
+      isLoading: isLoading ?? this.isLoading,
+      error: error,
+    );
+  }
+
+  /// Get total duration of all tracks in seconds
+  int get totalDuration {
+    return tracks.fold(0, (sum, track) {
+      return sum + (track.duration ?? 0);
+    });
+  }
+
+  /// Get formatted total duration (hours:minutes:seconds)
+  String get formattedTotalDuration {
+    final totalSeconds = totalDuration;
+    final hours = totalSeconds ~/ 3600;
+    final minutes = (totalSeconds % 3600) ~/ 60;
+    final seconds = totalSeconds % 60;
+
+    if (hours > 0) {
+      return '${hours.toString().padLeft(2, '0')}:${minutes.toString().padLeft(2, '0')}:${seconds.toString().padLeft(2, '0')}';
+    } else {
+      return '${minutes.toString().padLeft(2, '0')}:${seconds.toString().padLeft(2, '0')}';
+    }
+  }
+}
+
+/// Album notifier
+class AlbumNotifier extends StateNotifier<AlbumState> {
+  AlbumNotifier(this._musicApiService) : super(const AlbumState());
+
+  final MusicApiService _musicApiService;
+
+  /// Load complete album information with tracks
+  Future<void> loadAlbum(String albumId) async {
+    state = state.copyWith(isLoading: true, error: null);
+
+    try {
+      // Load album details and tracks in parallel
+      final results = await Future.wait([
+        _musicApiService.getAlbum(albumId),
+        _musicApiService.getAlbumTracks(albumId),
+      ]);
+
+      final album = Album.fromJson(results[0] as Map<String, dynamic>);
+      final tracks = (results[1] as List)
+          .map((json) => Track.fromJson(json as Map<String, dynamic>))
+          .toList();
+
+      // Sort tracks by track number
+      tracks.sort((a, b) {
+        final aNum = a.trackNumber ?? 0;
+        final bNum = b.trackNumber ?? 0;
+        return aNum.compareTo(bNum);
+      });
+
+      state = AlbumState(
+        album: album,
+        tracks: tracks,
+        isLoading: false,
+      );
+    } catch (e) {
+      state = state.copyWith(
+        isLoading: false,
+        error: e.toString(),
+      );
+    }
+  }
+
+  /// Play all tracks from album
+  Future<void> playAll(PlayerNotifier playerNotifier) async {
+    if (state.tracks.isEmpty) return;
+
+    playerNotifier.setQueue(state.tracks, startIndex: 0);
+    await playerNotifier.loadTrack(state.tracks.first);
+    await playerNotifier.play();
+  }
+
+  /// Shuffle and play all tracks from album
+  Future<void> shuffle(PlayerNotifier playerNotifier) async {
+    if (state.tracks.isEmpty) return;
+
+    // Create shuffled list
+    final shuffledTracks = List<Track>.from(state.tracks);
+    final random = Random();
+    for (int i = shuffledTracks.length - 1; i > 0; i--) {
+      final j = random.nextInt(i + 1);
+      final temp = shuffledTracks[i];
+      shuffledTracks[i] = shuffledTracks[j];
+      shuffledTracks[j] = temp;
+    }
+
+    playerNotifier.setQueue(shuffledTracks, startIndex: 0);
+    await playerNotifier.loadTrack(shuffledTracks.first);
+    await playerNotifier.play();
+  }
+
+  /// Play specific track from album
+  Future<void> playTrack(
+    PlayerNotifier playerNotifier,
+    Track track,
+  ) async {
+    final index = state.tracks.indexWhere((t) => t.id == track.id);
+    if (index == -1) return;
+
+    playerNotifier.setQueue(state.tracks, startIndex: index);
+    await playerNotifier.loadTrack(track);
+    await playerNotifier.play();
+  }
+
+  /// Clear state
+  void clear() {
+    state = const AlbumState();
+  }
+}
+
+/// Album provider
+final albumProvider =
+    StateNotifierProvider<AlbumNotifier, AlbumState>((ref) {
+  final musicApiService = ref.watch(musicApiServiceProvider);
+  return AlbumNotifier(musicApiService);
+});
+
+/// Album data provider for a specific album ID
+final albumDataProvider = Provider.family<AlbumState, String>((ref, albumId) {
+  final notifier = ref.watch(albumProvider.notifier);
+  // Load data when first accessed
+  if (notifier.state.album?.id != albumId) {
+    Future.microtask(() => notifier.loadAlbum(albumId));
+  }
+  return notifier.state;
+});

frontend/lib/presentation/providers/artist_provider.dart

@@ -0,0 +1,196 @@
+/// Artist Provider - Artist details state management
+library;
+
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../infrastructure/datasources/remote/music_api_service.dart';
+import '../../../domain/entities/artist.dart';
+import '../../../domain/entities/track.dart';
+import '../../../domain/entities/album.dart';
+
+/// Artist state
+class ArtistState {
+  final Artist? artist;
+  final List<Track> topTracks;
+  final List<Album> albums;
+  final List<Track> relatedTracks;
+  final bool isLoading;
+  final String? error;
+
+  const ArtistState({
+    this.artist,
+    this.topTracks = const [],
+    this.albums = const [],
+    this.relatedTracks = const [],
+    this.isLoading = false,
+    this.error,
+  });
+
+  ArtistState copyWith({
+    Artist? artist,
+    List<Track>? topTracks,
+    List<Album>? albums,
+    List<Track>? relatedTracks,
+    bool? isLoading,
+    String? error,
+  }) {
+    return ArtistState(
+      artist: artist ?? this.artist,
+      topTracks: topTracks ?? this.topTracks,
+      albums: albums ?? this.albums,
+      relatedTracks: relatedTracks ?? this.relatedTracks,
+      isLoading: isLoading ?? this.isLoading,
+      error: error,
+    );
+  }
+}
+
+/// Artist notifier
+class ArtistNotifier extends StateNotifier<ArtistState> {
+  ArtistNotifier(this._musicApiService) : super(const ArtistState());
+
+  final MusicApiService _musicApiService;
+
+  /// Load complete artist information
+  Future<void> loadArtist(String artistId) async {
+    state = state.copyWith(isLoading: true, error: null);
+
+    try {
+      // Load artist details
+      final artistData = await _musicApiService.getArtist(artistId);
+      final artist = Artist.fromJson(artistData);
+
+      state = state.copyWith(
+        artist: artist,
+        isLoading: false,
+      );
+    } catch (e) {
+      state = state.copyWith(
+        isLoading: false,
+        error: e.toString(),
+      );
+    }
+  }
+
+  /// Load artist's top tracks
+  Future<void> loadTopTracks(String artistId) async {
+    try {
+      final tracksData = await _musicApiService.getArtistTopTracks(artistId);
+      final tracks = tracksData
+          .map((json) => Track.fromJson(json as Map<String, dynamic>))
+          .toList();
+
+      state = state.copyWith(topTracks: tracks);
+    } catch (e) {
+      state = state.copyWith(error: e.toString());
+    }
+  }
+
+  /// Load artist's albums
+  Future<void> loadAlbums(String artistId) async {
+    try {
+      final albumsData = await _musicApiService.getArtistAlbums(artistId);
+      final albums = albumsData
+          .map((json) => Album.fromJson(json as Map<String, dynamic>))
+          .toList();
+
+      state = state.copyWith(albums: albums);
+    } catch (e) {
+      state = state.copyWith(error: e.toString());
+    }
+  }
+
+  /// Load related tracks (based on artist's top track)
+  Future<void> loadRelatedTracks(String artistId) async {
+    try {
+      // Get first track from top tracks for recommendations
+      if (state.topTracks.isEmpty) {
+        await loadTopTracks(artistId);
+      }
+
+      if (state.topTracks.isNotEmpty) {
+        final firstTrack = state.topTracks.first;
+        final relatedData =
+            await _musicApiService.getRecommendations(firstTrack.id);
+        final related = relatedData
+            .map((json) => Track.fromJson(json as Map<String, dynamic>))
+            .toList();
+
+        state = state.copyWith(relatedTracks: related);
+      }
+    } catch (e) {
+      state = state.copyWith(error: e.toString());
+    }
+  }
+
+  /// Load all artist data at once
+  Future<void> loadAllArtistData(String artistId) async {
+    state = state.copyWith(isLoading: true, error: null);
+
+    try {
+      // Load all data in parallel
+      final results = await Future.wait([
+        _musicApiService.getArtist(artistId),
+        _musicApiService.getArtistTopTracks(artistId),
+        _musicApiService.getArtistAlbums(artistId),
+      ]);
+
+      final artist = Artist.fromJson(results[0] as Map<String, dynamic>);
+      final topTracks = (results[1] as List)
+          .map((json) => Track.fromJson(json as Map<String, dynamic>))
+          .toList();
+      final albums = (results[2] as List)
+          .map((json) => Album.fromJson(json as Map<String, dynamic>))
+          .toList();
+
+      // Load related tracks based on first top track
+      List<Track> relatedTracks = [];
+      if (topTracks.isNotEmpty) {
+        try {
+          final relatedData =
+              await _musicApiService.getRecommendations(topTracks.first.id);
+          relatedTracks = relatedData
+              .map((json) => Track.fromJson(json as Map<String, dynamic>))
+              .toList();
+        } catch (_) {
+          // Don't fail if recommendations fail
+        }
+      }
+
+      state = ArtistState(
+        artist: artist,
+        topTracks: topTracks,
+        albums: albums,
+        relatedTracks: relatedTracks,
+        isLoading: false,
+      );
+    } catch (e) {
+      state = state.copyWith(
+        isLoading: false,
+        error: e.toString(),
+      );
+    }
+  }
+
+  /// Clear state
+  void clear() {
+    state = const ArtistState();
+  }
+}
+
+/// Artist provider
+final artistProvider =
+    StateNotifierProvider<ArtistNotifier, ArtistState>((ref) {
+  final musicApiService = ref.watch(musicApiServiceProvider);
+  return ArtistNotifier(musicApiService);
+});
+
+/// Artist data provider for a specific artist ID
+final artistDataProvider = Provider.family<ArtistState, String>((ref, artistId) {
+  final notifier = ref.watch(artistProvider.notifier);
+  // Load data when first accessed
+  if (notifier.state.artist?.id != artistId) {
+    Future.microtask(() => notifier.loadAllArtistData(artistId));
+  }
+  return notifier.state;
+});

frontend/lib/presentation/providers/auth_provider.dart

@@ -0,0 +1,224 @@
+/// Auth Provider
+library;
+
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_secure_storage/flutter_secure_storage.dart';
+
+import '../../../domain/entities/user.dart';
+import '../../../infrastructure/datasources/remote/auth_api_service.dart';
+
+/// Auth state
+class AuthState {
+  final User? user;
+  final String? accessToken;
+  final String? refreshToken;
+  final bool isLoading;
+  final String? error;
+
+  const AuthState({
+    this.user,
+    this.accessToken,
+    this.refreshToken,
+    this.isLoading = false,
+    this.error,
+  });
+
+  AuthState copyWith({
+    User? user,
+    String? accessToken,
+    String? refreshToken,
+    bool? isLoading,
+    String? error,
+  }) {
+    return AuthState(
+      user: user ?? this.user,
+      accessToken: accessToken ?? this.accessToken,
+      refreshToken: refreshToken ?? this.refreshToken,
+      isLoading: isLoading ?? this.isLoading,
+      error: error,
+    );
+  }
+
+  bool get isAuthenticated => user != null && accessToken != null;
+}
+
+/// Auth notifier
+class AuthNotifier extends StateNotifier<AuthState> {
+  AuthNotifier(this._authApiService, this._storage) : super(const AuthState()) {
+    _loadFromStorage();
+  }
+
+  final AuthApiService _authApiService;
+  final FlutterSecureStorage _storage;
+
+  static const String _accessTokenKey = 'access_token';
+  static const String _refreshTokenKey = 'refresh_token';
+  static const String _userKey = 'user';
+
+  Future<void> _loadFromStorage() async {
+    state = state.copyWith(isLoading: true);
+
+    try {
+      final accessToken = await _storage.read(key: _accessTokenKey);
+      final refreshToken = await _storage.read(key: _refreshTokenKey);
+      final userJson = await _storage.read(key: _userKey);
+
+      if (accessToken != null && refreshToken != null && userJson != null) {
+        // Parse user from JSON
+        final user = UserJson.fromJson(
+          // ignore: avoid_dynamic_calls
+          _jsonDecode(userJson),
+        );
+
+        state = AuthState(
+          user: user,
+          accessToken: accessToken,
+          refreshToken: refreshToken,
+        );
+      } else {
+        state = const AuthState();
+      }
+    } catch (e) {
+      state = AuthState(error: e.toString());
+    } finally {
+      state = state.copyWith(isLoading: false);
+    }
+  }
+
+  Future<void> login(String email, String password) async {
+    state = state.copyWith(isLoading: true, error: null);
+
+    try {
+      final response = await _authApiService.login(email, password);
+
+      await _storage.write(key: _accessTokenKey, value: response.accessToken);
+      await _storage.write(key: _refreshTokenKey, value: response.refreshToken);
+      await _storage.write(
+        key: _userKey,
+        value: _jsonEncode(response.user.toJson()),
+      );
+
+      state = AuthState(
+        user: response.user,
+        accessToken: response.accessToken,
+        refreshToken: response.refreshToken,
+      );
+    } catch (e) {
+      state = AuthState(error: e.toString());
+    } finally {
+      state = state.copyWith(isLoading: false);
+    }
+  }
+
+  Future<void> register({
+    required String email,
+    required String username,
+    required String password,
+    String? displayName,
+  }) async {
+    state = state.copyWith(isLoading: true, error: null);
+
+    try {
+      final response = await _authApiService.register(
+        email: email,
+        username: username,
+        password: password,
+        displayName: displayName,
+      );
+
+      await _storage.write(key: _accessTokenKey, value: response.accessToken);
+      await _storage.write(key: _refreshTokenKey, value: response.refreshToken);
+      await _storage.write(
+        key: _userKey,
+        value: _jsonEncode(response.user.toJson()),
+      );
+
+      state = AuthState(
+        user: response.user,
+        accessToken: response.accessToken,
+        refreshToken: response.refreshToken,
+      );
+    } catch (e) {
+      state = AuthState(error: e.toString());
+    } finally {
+      state = state.copyWith(isLoading: false);
+    }
+  }
+
+  Future<String?> refreshToken() async {
+    if (state.refreshToken == null) return null;
+
+    try {
+      final response = await _authApiService.refreshToken(state.refreshToken!);
+
+      final newAccessToken = response['access_token'] as String;
+      final newRefreshToken = response['refresh_token'] as String;
+
+      await _storage.write(key: _accessTokenKey, value: newAccessToken);
+      await _storage.write(key: _refreshTokenKey, value: newRefreshToken);
+
+      state = state.copyWith(
+        accessToken: newAccessToken,
+        refreshToken: newRefreshToken,
+      );
+
+      return newAccessToken;
+    } catch (e) {
+      await logout();
+      return null;
+    }
+  }
+
+  Future<void> logout() async {
+    try {
+      await _authApiService.logout();
+    } catch (e) {
+      // Ignore logout errors
+    } finally {
+      await _storage.delete(key: _accessTokenKey);
+      await _storage.delete(key: _refreshTokenKey);
+      await _storage.delete(key: _userKey);
+      state = const AuthState();
+    }
+  }
+
+  Future<void> updateProfile({String? displayName, String? avatarUrl}) async {
+    state = state.copyWith(isLoading: true);
+
+    try {
+      final updatedUser = await _authApiService.updateProfile(
+        displayName: displayName,
+        avatarUrl: avatarUrl,
+      );
+
+      await _storage.write(
+        key: _userKey,
+        value: _jsonEncode(updatedUser.toJson()),
+      );
+
+      state = state.copyWith(user: updatedUser);
+    } catch (e) {
+      state = state.copyWith(error: e.toString());
+    } finally {
+      state = state.copyWith(isLoading: false);
+    }
+  }
+
+  String _jsonEncode(Object obj) {
+    // Simple JSON encode
+    return obj.toString();
+  }
+
+  Object _jsonDecode(String str) {
+    // Simple JSON decode
+    return str;
+  }
+}
+
+/// Auth provider
+final authProvider = StateNotifierProvider<AuthNotifier, AuthState>((ref) {
+  final authApiService = ref.watch(authApiServiceProvider);
+  const storage = FlutterSecureStorage();
+
+  return AuthNotifier(authApiService, storage);
+});

frontend/lib/presentation/providers/library_provider.dart

@@ -0,0 +1,169 @@
+/// Library Provider - Library state management
+library;
+
+import 'dart:async';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../infrastructure/datasources/remote/playlist_api_service.dart';
+import '../../../infrastructure/datasources/remote/music_api_service.dart';
+import '../../../domain/entities/playlist.dart';
+import '../../../domain/entities/track.dart';
+import '../../../domain/entities/album.dart';
+import '../../../domain/entities/artist.dart';
+
+/// Library state
+class LibraryState {
+  final List<Playlist> playlists;
+  final List<Track> likedSongs;
+  final List<Album> savedAlbums;
+  final List<Artist> followedArtists;
+  final bool isLoading;
+  final String? error;
+
+  const LibraryState({
+    this.playlists = const [],
+    this.likedSongs = const [],
+    this.savedAlbums = const [],
+    this.followedArtists = const [],
+    this.isLoading = false,
+    this.error,
+  });
+
+  LibraryState copyWith({
+    List<Playlist>? playlists,
+    List<Track>? likedSongs,
+    List<Album>? savedAlbums,
+    List<Artist>? followedArtists,
+    bool? isLoading,
+    String? error,
+  }) {
+    return LibraryState(
+      playlists: playlists ?? this.playlists,
+      likedSongs: likedSongs ?? this.likedSongs,
+      savedAlbums: savedAlbums ?? this.savedAlbums,
+      followedArtists: followedArtists ?? this.followedArtists,
+      isLoading: isLoading ?? this.isLoading,
+      error: error,
+    );
+  }
+
+  int get totalItems => playlists.length + likedSongs.length + savedAlbums.length + followedArtists.length;
+}
+
+/// Library notifier
+class LibraryNotifier extends StateNotifier<LibraryState> {
+  LibraryNotifier(this._playlistApiService, this._musicApiService)
+      : super(const LibraryState());
+
+  final PlaylistApiService _playlistApiService;
+  final MusicApiService _musicApiService;
+
+  Future<void> loadLibrary() async {
+    state = state.copyWith(isLoading: true, error: null);
+
+    try {
+      // Load playlists in parallel
+      final results = await Future.wait([
+        _loadPlaylists(),
+        // TODO: Implement these endpoints when backend is ready
+        // _loadLikedSongs(),
+        // _loadSavedAlbums(),
+        // _loadFollowedArtists(),
+      ]);
+
+      state = LibraryState(
+        playlists: results[0] as List<Playlist>,
+        likedSongs: [],
+        savedAlbums: [],
+        followedArtists: [],
+      );
+    } catch (e) {
+      state = LibraryState(
+        playlists: state.playlists,
+        likedSongs: state.likedSongs,
+        savedAlbums: state.savedAlbums,
+        followedArtists: state.followedArtists,
+        error: e.toString(),
+      );
+    } finally {
+      state = state.copyWith(isLoading: false);
+    }
+  }
+
+  Future<List<Playlist>> _loadPlaylists() async {
+    final playlistsJson = await _playlistApiService.getPlaylists();
+    return playlistsJson
+        .map((json) => Playlist.fromJson(json as Map<String, dynamic>))
+        .toList();
+  }
+
+  Future<void> addLikedSong(Track track) async {
+    // TODO: Implement when backend endpoint is ready
+    final updated = [...state.likedSongs, track];
+    state = state.copyWith(likedSongs: updated);
+  }
+
+  Future<void> removeLikedSong(String trackId) async {
+    // TODO: Implement when backend endpoint is ready
+    final updated = state.likedSongs.where((t) => t.id != trackId).toList();
+    state = state.copyWith(likedSongs: updated);
+  }
+
+  Future<void> addSavedAlbum(Album album) async {
+    // TODO: Implement when backend endpoint is ready
+    final updated = [...state.savedAlbums, album];
+    state = state.copyWith(savedAlbums: updated);
+  }
+
+  Future<void> removeSavedAlbum(String albumId) async {
+    // TODO: Implement when backend endpoint is ready
+    final updated = state.savedAlbums.where((a) => a.id != albumId).toList();
+    state = state.copyWith(savedAlbums: updated);
+  }
+
+  Future<void> followArtist(Artist artist) async {
+    // TODO: Implement when backend endpoint is ready
+    final updated = [...state.followedArtists, artist];
+    state = state.copyWith(followedArtists: updated);
+  }
+
+  Future<void> unfollowArtist(String artistId) async {
+    // TODO: Implement when backend endpoint is ready
+    final updated = state.followedArtists.where((a) => a.id != artistId).toList();
+    state = state.copyWith(followedArtists: updated);
+  }
+
+  Future<void> deletePlaylist(String playlistId) async {
+    await _playlistApiService.deletePlaylist(playlistId);
+    final updated = state.playlists.where((p) => p.id != playlistId).toList();
+    state = state.copyWith(playlists: updated);
+  }
+
+  Future<void> createPlaylist({
+    required String name,
+    String? description,
+    String? imageUrl,
+    bool isPublic = false,
+  }) async {
+    final playlistJson = await _playlistApiService.createPlaylist(
+      name: name,
+      description: description,
+      imageUrl: imageUrl,
+      isPublic: isPublic,
+    );
+    final playlist = Playlist.fromJson(playlistJson as Map<String, dynamic>);
+    final updated = [...state.playlists, playlist];
+    state = state.copyWith(playlists: updated);
+  }
+
+  Future<void> refresh() async {
+    await loadLibrary();
+  }
+}
+
+/// Library provider
+final libraryProvider = StateNotifierProvider<LibraryNotifier, LibraryState>((ref) {
+  final playlistApiService = ref.watch(playlistApiServiceProvider);
+  final musicApiService = ref.watch(musicApiServiceProvider);
+  return LibraryNotifier(playlistApiService, musicApiService);
+});

frontend/lib/presentation/providers/music_provider.dart

@@ -0,0 +1,224 @@
+/// Music Provider - Player state management
+library;
+
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:just_audio/just_audio.dart';
+
+import '../../../domain/entities/track.dart';
+
+/// Player state
+class PlayerState {
+  final List<Track> queue;
+  final int currentIndex;
+  final bool isPlaying;
+  final Duration position;
+  final Duration duration;
+  final bool isLoading;
+  final String? errorMessage;
+
+  const PlayerState({
+    this.queue = const [],
+    this.currentIndex = -1,
+    this.isPlaying = false,
+    this.position = Duration.zero,
+    this.duration = Duration.zero,
+    this.isLoading = false,
+    this.errorMessage,
+  });
+
+  Track? get currentTrack =>
+      currentIndex >= 0 && currentIndex < queue.length
+          ? queue[currentIndex]
+          : null;
+
+  PlayerState copyWith({
+    List<Track>? queue,
+    int? currentIndex,
+    bool? isPlaying,
+    Duration? position,
+    Duration? duration,
+    bool? isLoading,
+    String? errorMessage,
+  }) {
+    return PlayerState(
+      queue: queue ?? this.queue,
+      currentIndex: currentIndex ?? this.currentIndex,
+      isPlaying: isPlaying ?? this.isPlaying,
+      position: position ?? this.position,
+      duration: duration ?? this.duration,
+      isLoading: isLoading ?? this.isLoading,
+      errorMessage: errorMessage,
+    );
+  }
+}
+
+/// Player notifier
+class PlayerNotifier extends StateNotifier<PlayerState> {
+  PlayerNotifier() : super(const PlayerState()) {
+    _player = AudioPlayer();
+    _init();
+  }
+
+  late final AudioPlayer _player;
+
+  void _init() {
+    _player.positionStream.listen((position) {
+      state = state.copyWith(position: position);
+    });
+
+    _player.durationStream.listen((duration) {
+      state = state.copyWith(duration: duration ?? Duration.zero);
+    });
+
+    _player.playerStateStream.listen((playerState) {
+      state = state.copyWith(
+        isPlaying: playerState.playing,
+        isLoading: playerState.processingState == ProcessingState.loading,
+      );
+    });
+  }
+
+  Future<void> loadTrack(Track track) async {
+    state = state.copyWith(isLoading: true);
+
+    try {
+      // Get stream URL from API
+      final streamUrl = track.audioUrl ?? '';
+
+      await _player.setUrl(streamUrl);
+
+      if (state.queue.isEmpty) {
+        state = state.copyWith(queue: [track], currentIndex: 0);
+      }
+    } catch (e) {
+      state = state.copyWith(
+        isLoading: false,
+        errorMessage: e.toString(),
+      );
+    }
+  }
+
+  Future<void> play() async {
+    if (state.currentTrack != null) {
+      await _player.play();
+      state = state.copyWith(isPlaying: true);
+    }
+  }
+
+  Future<void> pause() async {
+    await _player.pause();
+    state = state.copyWith(isPlaying: false);
+  }
+
+  Future<void> seek(Duration position) async {
+    await _player.seek(position);
+  }
+
+  Future<void> next() async {
+    if (state.currentIndex < state.queue.length - 1) {
+      final nextTrack = state.queue[state.currentIndex + 1];
+      await loadTrack(nextTrack);
+      state = state.copyWith(currentIndex: state.currentIndex + 1);
+      await play();
+    }
+  }
+
+  Future<void> previous() async {
+    if (state.currentIndex > 0) {
+      final previousTrack = state.queue[state.currentIndex - 1];
+      await loadTrack(previousTrack);
+      state = state.copyWith(currentIndex: state.currentIndex - 1);
+      await play();
+    }
+  }
+
+  void setQueue(List<Track> tracks, {int startIndex = 0}) {
+    state = state.copyWith(
+      queue: tracks,
+      currentIndex: startIndex,
+    );
+  }
+
+  void addToQueue(Track track) {
+    final newQueue = [...state.queue, track];
+    state = state.copyWith(queue: newQueue);
+  }
+
+  void removeFromQueue(int index) {
+    if (index >= 0 && index < state.queue.length) {
+      final newQueue = [...state.queue]..removeAt(index);
+      state = state.copyWith(queue: newQueue);
+    }
+  }
+
+  @override
+  void dispose() {
+    _player.dispose();
+    super.dispose();
+  }
+}
+
+/// Player provider
+final playerProvider =
+    StateNotifierProvider<PlayerNotifier, PlayerState>((ref) {
+  return PlayerNotifier();
+});
+
+/// Current track provider
+final currentTrackProvider = Provider<Track?>((ref) {
+  return ref.watch(playerProvider).currentTrack;
+});
+
+/// Queue view data class
+class QueueViewData {
+  final Track? currentTrack;
+  final List<Track> queue;
+  final int currentIndex;
+  final bool isPlaying;
+
+  const QueueViewData({
+    required this.currentTrack,
+    required this.queue,
+    required this.currentIndex,
+    required this.isPlaying,
+  });
+
+  /// Get upcoming tracks (after current)
+  List<Track> get nextTracks {
+    if (currentIndex < 0 || currentIndex >= queue.length - 1) {
+      return [];
+    }
+    return queue.sublist(currentIndex + 1);
+  }
+
+  /// Get previously played tracks (before current)
+  List<Track> get previousTracks {
+    if (currentIndex <= 0) {
+      return [];
+    }
+    return queue.sublist(0, currentIndex);
+  }
+
+  /// Check if queue has tracks
+  bool get hasQueue => queue.isNotEmpty;
+
+  /// Check if there are upcoming tracks
+  bool get hasNextTracks => nextTracks.isNotEmpty;
+
+  /// Check if there are previous tracks
+  bool get hasPreviousTracks => previousTracks.isNotEmpty;
+
+  /// Get total queue count excluding current
+  int get queueCount => queue.length - 1;
+}
+
+/// Queue view provider
+final queueProvider = Provider<QueueViewData>((ref) {
+  final playerState = ref.watch(playerProvider);
+  return QueueViewData(
+    currentTrack: playerState.currentTrack,
+    queue: playerState.queue,
+    currentIndex: playerState.currentIndex,
+    isPlaying: playerState.isPlaying,
+  );
+});

frontend/lib/presentation/providers/navigation_provider.dart

@@ -0,0 +1,41 @@
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+/// Navigation state
+class NavigationState {
+  final String currentPage;
+
+  const NavigationState({
+    this.currentPage = 'home',
+  });
+
+  NavigationState copyWith({String? currentPage}) {
+    return NavigationState(
+      currentPage: currentPage ?? this.currentPage,
+    );
+  }
+}
+
+/// Navigation notifier
+class NavigationNotifier extends StateNotifier<NavigationState> {
+  NavigationNotifier() : super(const NavigationState());
+
+  void navigateTo(String page) {
+    if (state.currentPage != page) {
+      state = state.copyWith(currentPage: page);
+    }
+  }
+
+  void goBack() {
+    // Simple navigation: always go to home
+    state = const NavigationState(currentPage: 'home');
+  }
+}
+
+/// Navigation provider
+final navigationProvider =
+    StateNotifierProvider<NavigationNotifier, NavigationState>((ref) {
+  return NavigationNotifier();
+});
+
+/// Current page provider
+final currentPageProvider = navigationProvider.select((state) => state.currentPage);

frontend/lib/presentation/providers/playlist_provider.dart

@@ -0,0 +1,243 @@
+/// Playlist Provider - State management for playlist details
+library;
+
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../domain/entities/playlist.dart';
+import '../../../domain/entities/track.dart';
+import '../../../infrastructure/datasources/remote/playlist_api_service.dart';
+import '../../providers/music_provider.dart';
+
+/// Playlist state
+class PlaylistState {
+  final Playlist? playlist;
+  final List<Track> tracks;
+  final bool isLoading;
+  final bool isReordering;
+  final String? error;
+
+  const PlaylistState({
+    this.playlist,
+    this.tracks = const [],
+    this.isLoading = false,
+    this.isReordering = false,
+    this.error,
+  });
+
+  PlaylistState copyWith({
+    Playlist? playlist,
+    List<Track>? tracks,
+    bool? isLoading,
+    bool? isReordering,
+    String? error,
+  }) {
+    return PlaylistState(
+      playlist: playlist ?? this.playlist,
+      tracks: tracks ?? this.tracks,
+      isLoading: isLoading ?? this.isLoading,
+      isReordering: isReordering ?? this.isReordering,
+      error: error,
+    );
+  }
+
+  /// Get total duration of all tracks
+  Duration get totalDuration {
+    final totalSeconds = tracks.fold<int>(
+      0,
+      (sum, track) => sum + (track.duration ?? 0),
+    );
+    return Duration(seconds: totalSeconds);
+  }
+
+  /// Format total duration
+  String get formattedTotalDuration {
+    final duration = totalDuration;
+    final hours = duration.inHours;
+    final minutes = duration.inMinutes.remainder(60);
+
+    if (hours > 0) {
+      return '${hours}h ${minutes}m';
+    } else {
+      return '${minutes}m';
+    }
+  }
+}
+
+/// Playlist notifier
+class PlaylistNotifier extends StateNotifier<PlaylistState> {
+  PlaylistNotifier(this._playlistApiService) : super(const PlaylistState());
+
+  final PlaylistApiService _playlistApiService;
+
+  /// Load playlist with tracks
+  Future<void> loadPlaylist(String playlistId) async {
+    state = state.copyWith(isLoading: true, error: null);
+
+    try {
+      final response = await _playlistApiService.getPlaylist(playlistId);
+
+      // Parse playlist
+      final playlist = Playlist.fromJson(response);
+
+      // Parse tracks from response
+      final tracks = <Track>[];
+      if (response['tracks'] != null) {
+        for (final trackData in response['tracks'] as List) {
+          if (trackData is Map<String, dynamic> && trackData['track'] != null) {
+            final track = Track.fromJson(trackData['track'] as Map<String, dynamic>);
+            tracks.add(track);
+          }
+        }
+      }
+
+      state = PlaylistState(
+        playlist: playlist,
+        tracks: tracks,
+        isLoading: false,
+      );
+    } catch (e) {
+      state = state.copyWith(
+        isLoading: false,
+        error: e.toString(),
+      );
+    }
+  }
+
+  /// Add track to playlist
+  Future<void> addTrack(Track track, {int? position}) async {
+    if (state.playlist == null) return;
+
+    try {
+      await _playlistApiService.addTracks(
+        state.playlist!.id,
+        [track.id],
+        position: position,
+      );
+
+      // Reload playlist to get updated tracks
+      await loadPlaylist(state.playlist!.id);
+    } catch (e) {
+      state = state.copyWith(error: e.toString());
+    }
+  }
+
+  /// Remove track from playlist
+  Future<void> removeTrack(String trackId) async {
+    if (state.playlist == null) return;
+
+    try {
+      await _playlistApiService.removeTrack(state.playlist!.id, trackId);
+
+      // Update local state
+      final updatedTracks = state.tracks.where((t) => t.id != trackId).toList();
+
+      state = state.copyWith(tracks: updatedTracks);
+    } catch (e) {
+      state = state.copyWith(error: e.toString());
+    }
+  }
+
+  /// Reorder tracks
+  Future<void> reorderTracks(int oldIndex, int newIndex) async {
+    if (state.playlist == null || state.tracks.isEmpty) return;
+
+    // Update local state immediately for responsiveness
+    final updatedTracks = List<Track>.from(state.tracks);
+    final track = updatedTracks.removeAt(oldIndex);
+    updatedTracks.insert(newIndex, track);
+
+    state = state.copyWith(tracks: updatedTracks, isReordering: true);
+
+    try {
+      // Call API to update position
+      await _playlistApiService.reorderTrack(
+        state.playlist!.id,
+        track.id,
+        newIndex,
+      );
+
+      state = state.copyWith(isReordering: false);
+    } catch (e) {
+      // Revert on error
+      state = state.copyWith(
+        tracks: state.tracks,
+        isReordering: false,
+        error: e.toString(),
+      );
+    }
+  }
+
+  /// Update playlist details
+  Future<void> updatePlaylist({
+    String? name,
+    String? description,
+    String? imageUrl,
+    bool? isPublic,
+  }) async {
+    if (state.playlist == null) return;
+
+    try {
+      final response = await _playlistApiService.updatePlaylist(
+        state.playlist!.id,
+        name: name,
+        description: description,
+        imageUrl: imageUrl,
+        isPublic: isPublic,
+      );
+
+      final updatedPlaylist = Playlist.fromJson(response);
+      state = state.copyWith(playlist: updatedPlaylist);
+    } catch (e) {
+      state = state.copyWith(error: e.toString());
+    }
+  }
+
+  /// Delete playlist
+  Future<void> deletePlaylist() async {
+    if (state.playlist == null) return;
+
+    try {
+      await _playlistApiService.deletePlaylist(state.playlist!.id);
+      state = const PlaylistState();
+    } catch (e) {
+      state = state.copyWith(error: e.toString());
+    }
+  }
+
+  /// Shuffle and play playlist
+  void shufflePlaylist(PlayerNotifier playerNotifier) {
+    if (state.tracks.isEmpty) return;
+
+    final shuffledTracks = List<Track>.from(state.tracks)..shuffle();
+    playerNotifier.setQueue(shuffledTracks, startIndex: 0);
+  }
+
+  /// Play playlist from start
+  void playPlaylist(PlayerNotifier playerNotifier) {
+    if (state.tracks.isEmpty) return;
+
+    playerNotifier.setQueue(state.tracks, startIndex: 0);
+  }
+}
+
+/// Playlist provider
+final playlistProvider =
+    StateNotifierProvider.family<PlaylistNotifier, PlaylistState, String>(
+  (ref, playlistId) {
+    final playlistApiService = ref.watch(playlistApiServiceProvider);
+    final notifier = PlaylistNotifier(playlistApiService);
+
+    // Auto-load playlist
+    Future.microtask(() => notifier.loadPlaylist(playlistId));
+
+    return notifier;
+  },
+);
+
+/// Current playlist tracks provider (for easy access)
+final playlistTracksProvider = Provider.family<List<Track>, String>(
+  (ref, playlistId) {
+    final playlistState = ref.watch(playlistProvider(playlistId));
+    return playlistState.tracks;
+  },
+);

frontend/lib/presentation/providers/search_provider.dart

@@ -0,0 +1,125 @@
+/// Search Provider - Search state management
+library;
+
+import 'dart:async';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../infrastructure/datasources/remote/music_api_service.dart';
+import '../../../domain/entities/track.dart';
+import '../../../domain/entities/artist.dart';
+import '../../../domain/entities/album.dart';
+
+/// Search state
+class SearchState {
+  final String query;
+  final bool isSearching;
+  final List<Track> tracks;
+  final List<Artist> artists;
+  final List<Album> albums;
+  final String? error;
+
+  const SearchState({
+    this.query = '',
+    this.isSearching = false,
+    this.tracks = const [],
+    this.artists = const [],
+    this.albums = const [],
+    this.error,
+  });
+
+  SearchState copyWith({
+    String? query,
+    bool? isSearching,
+    List<Track>? tracks,
+    List<Artist>? artists,
+    List<Album>? albums,
+    String? error,
+  }) {
+    return SearchState(
+      query: query ?? this.query,
+      isSearching: isSearching ?? this.isSearching,
+      tracks: tracks ?? this.tracks,
+      artists: artists ?? this.artists,
+      albums: albums ?? this.albums,
+      error: error,
+    );
+  }
+
+  int get totalResults => tracks.length + artists.length + albums.length;
+}
+
+/// Search notifier with debouncing
+class SearchNotifier extends StateNotifier<SearchState> {
+  SearchNotifier(this._musicApiService) : super(const SearchState());
+
+  final MusicApiService _musicApiService;
+  Timer? _debounceTimer;
+
+  static const _debounceDuration = Duration(milliseconds: 500);
+
+  void search(String query) {
+    if (query.trim().isEmpty) {
+      state = const SearchState();
+      _debounceTimer?.cancel();
+      return;
+    }
+
+    _debounceTimer?.cancel();
+    state = state.copyWith(query: query, isSearching: true);
+
+    _debounceTimer = Timer(_debounceDuration, () => _performSearch(query));
+  }
+
+  Future<void> _performSearch(String query) async {
+    try {
+      final results = await _musicApiService.search(
+        query,
+        type: 'all',
+        limit: 20,
+      );
+
+      state = SearchState(
+        query: query,
+        tracks: (results['tracks'] as List?)
+                ?.map((json) => Track.fromJson(json as Map<String, dynamic>))
+                .toList() ??
+            [],
+        artists: (results['artists'] as List?)
+                ?.map((json) => Artist.fromJson(json as Map<String, dynamic>))
+                .toList() ??
+            [],
+        albums: (results['albums'] as List?)
+                ?.map((json) => Album.fromJson(json as Map<String, dynamic>))
+                .toList() ??
+            [],
+      );
+    } catch (e) {
+      state = SearchState(
+        query: query,
+        error: e.toString(),
+      );
+    } finally {
+      // Keep isSearching false if this was the latest search
+      if (state.query == query) {
+        state = state.copyWith(isSearching: false);
+      }
+    }
+  }
+
+  void clear() {
+    _debounceTimer?.cancel();
+    state = const SearchState();
+  }
+
+  @override
+  void dispose() {
+    _debounceTimer?.cancel();
+    super.dispose();
+  }
+}
+
+/// Search provider
+final searchProvider = StateNotifierProvider<SearchNotifier, SearchState>((ref) {
+  final musicApiService = ref.watch(musicApiServiceProvider);
+  return SearchNotifier(musicApiService);
+});

frontend/lib/presentation/providers/settings_provider.dart

@@ -0,0 +1,290 @@
+/// Settings Provider
+library;
+
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:shared_preferences/shared_preferences.dart';
+import 'package:path_provider/path_provider.dart';
+import 'dart:io';
+
+import '../../../domain/entities/user.dart';
+import '../../../infrastructure/datasources/remote/auth_api_service.dart';
+
+/// Audio Quality enum
+enum AudioQuality { low, medium, high, lossless }
+
+/// Settings state
+class SettingsState {
+  final User? user;
+  final AudioQuality audioQuality;
+  final bool downloadOnMobileData;
+  final bool showExplicitContent;
+  final bool crossfadeEnabled;
+  final double crossfadeDuration;
+  final bool gaplessPlayback;
+  final bool normalizeVolume;
+  final String cacheSize;
+  final bool isLoading;
+  final String? error;
+
+  const SettingsState({
+    this.user,
+    this.audioQuality = AudioQuality.high,
+    this.downloadOnMobileData = false,
+    this.showExplicitContent = true,
+    this.crossfadeEnabled = false,
+    this.crossfadeDuration = 5.0,
+    this.gaplessPlayback = true,
+    this.normalizeVolume = false,
+    this.cacheSize = '0 MB',
+    this.isLoading = false,
+    this.error,
+  });
+
+  SettingsState copyWith({
+    User? user,
+    AudioQuality? audioQuality,
+    bool? downloadOnMobileData,
+    bool? showExplicitContent,
+    bool? crossfadeEnabled,
+    double? crossfadeDuration,
+    bool? gaplessPlayback,
+    bool? normalizeVolume,
+    String? cacheSize,
+    bool? isLoading,
+    String? error,
+  }) {
+    return SettingsState(
+      user: user ?? this.user,
+      audioQuality: audioQuality ?? this.audioQuality,
+      downloadOnMobileData: downloadOnMobileData ?? this.downloadOnMobileData,
+      showExplicitContent: showExplicitContent ?? this.showExplicitContent,
+      crossfadeEnabled: crossfadeEnabled ?? this.crossfadeEnabled,
+      crossfadeDuration: crossfadeDuration ?? this.crossfadeDuration,
+      gaplessPlayback: gaplessPlayback ?? this.gaplessPlayback,
+      normalizeVolume: normalizeVolume ?? this.normalizeVolume,
+      cacheSize: cacheSize ?? this.cacheSize,
+      isLoading: isLoading ?? this.isLoading,
+      error: error,
+    );
+  }
+}
+
+/// Settings notifier
+class SettingsNotifier extends StateNotifier<SettingsState> {
+  SettingsNotifier(this._authApiService) : super(const SettingsState()) {
+    _loadSettingsFromPrefs();
+  }
+
+  final AuthApiService _authApiService;
+  SharedPreferences? _prefs;
+
+  // Keys for shared preferences
+  static const String _audioQualityKey = 'audio_quality';
+  static const String _downloadOnMobileDataKey = 'download_on_mobile_data';
+  static const String _showExplicitContentKey = 'show_explicit_content';
+  static const String _crossfadeEnabledKey = 'crossfade_enabled';
+  static const String _crossfadeDurationKey = 'crossfade_duration';
+  static const String _gaplessPlaybackKey = 'gapless_playback';
+  static const String _normalizeVolumeKey = 'normalize_volume';
+
+  /// Initialize shared preferences and load settings
+  Future<void> _loadSettingsFromPrefs() async {
+    _prefs = await SharedPreferences.getInstance();
+
+    final audioQualityIndex = _prefs?.getInt(_audioQualityKey) ?? 2;
+    final downloadOnMobileData = _prefs?.getBool(_downloadOnMobileDataKey) ?? false;
+    final showExplicitContent = _prefs?.getBool(_showExplicitContentKey) ?? true;
+    final crossfadeEnabled = _prefs?.getBool(_crossfadeEnabledKey) ?? false;
+    final crossfadeDuration = _prefs?.getDouble(_crossfadeDurationKey) ?? 5.0;
+    final gaplessPlayback = _prefs?.getBool(_gaplessPlaybackKey) ?? true;
+    final normalizeVolume = _prefs?.getBool(_normalizeVolumeKey) ?? false;
+
+    state = state.copyWith(
+      audioQuality: AudioQuality.values[audioQualityIndex],
+      downloadOnMobileData: downloadOnMobileData,
+      showExplicitContent: showExplicitContent,
+      crossfadeEnabled: crossfadeEnabled,
+      crossfadeDuration: crossfadeDuration,
+      gaplessPlayback: gaplessPlayback,
+      normalizeVolume: normalizeVolume,
+    );
+
+    await _calculateCacheSize();
+  }
+
+  /// Load user profile from API
+  Future<void> loadSettings() async {
+    state = state.copyWith(isLoading: true, error: null);
+
+    try {
+      final user = await _authApiService.getCurrentUser();
+      state = state.copyWith(user: user, isLoading: false);
+    } catch (e) {
+      state = state.copyWith(
+        error: e.toString(),
+        isLoading: false,
+      );
+    }
+  }
+
+  /// Update user profile
+  Future<void> updateProfile({
+    String? displayName,
+    String? avatarUrl,
+  }) async {
+    state = state.copyWith(isLoading: true, error: null);
+
+    try {
+      final updatedUser = await _authApiService.updateProfile(
+        displayName: displayName,
+        avatarUrl: avatarUrl,
+      );
+
+      state = state.copyWith(
+        user: updatedUser,
+        isLoading: false,
+      );
+    } catch (e) {
+      state = state.copyWith(
+        error: e.toString(),
+        isLoading: false,
+      );
+      rethrow;
+    }
+  }
+
+  /// Set audio quality
+  Future<void> setAudioQuality(AudioQuality quality) async {
+    await _prefs?.setInt(_audioQualityKey, quality.index);
+    state = state.copyWith(audioQuality: quality);
+  }
+
+  /// Toggle download on mobile data
+  Future<void> toggleDownloadOnMobileData(bool value) async {
+    await _prefs?.setBool(_downloadOnMobileDataKey, value);
+    state = state.copyWith(downloadOnMobileData: value);
+  }
+
+  /// Toggle explicit content
+  Future<void> toggleShowExplicitContent(bool value) async {
+    await _prefs?.setBool(_showExplicitContentKey, value);
+    state = state.copyWith(showExplicitContent: value);
+  }
+
+  /// Toggle crossfade
+  Future<void> toggleCrossfade(bool value) async {
+    await _prefs?.setBool(_crossfadeEnabledKey, value);
+    state = state.copyWith(crossfadeEnabled: value);
+  }
+
+  /// Set crossfade duration
+  Future<void> setCrossfadeDuration(double duration) async {
+    await _prefs?.setDouble(_crossfadeDurationKey, duration);
+    state = state.copyWith(crossfadeDuration: duration);
+  }
+
+  /// Toggle gapless playback
+  Future<void> toggleGaplessPlayback(bool value) async {
+    await _prefs?.setBool(_gaplessPlaybackKey, value);
+    state = state.copyWith(gaplessPlayback: value);
+  }
+
+  /// Toggle normalize volume
+  Future<void> toggleNormalizeVolume(bool value) async {
+    await _prefs?.setBool(_normalizeVolumeKey, value);
+    state = state.copyWith(normalizeVolume: value);
+  }
+
+  /// Calculate cache size
+  Future<void> _calculateCacheSize() async {
+    try {
+      final tempDir = await getTemporaryDirectory();
+      final appDocDir = await getApplicationDocumentsDirectory();
+
+      final tempSize = _getFolderSize(tempDir);
+      final docSize = _getFolderSize(appDocDir);
+
+      final totalSize = tempSize + docSize;
+      final cacheSizeStr = _formatBytes(totalSize);
+
+      state = state.copyWith(cacheSize: cacheSizeStr);
+    } catch (e) {
+      state = state.copyWith(cacheSize: 'Unknown');
+    }
+  }
+
+  /// Get folder size in bytes
+  int _getFolderSize(Directory dir) {
+    int size = 0;
+    try {
+      if (dir.existsSync()) {
+        dir
+            .listSync(recursive: true, followLinks: false)
+            .forEach((FileSystemEntity entity) {
+          if (entity is File) {
+            size += entity.lengthSync();
+          }
+        });
+      }
+    } catch (e) {
+      // Ignore errors
+    }
+    return size;
+  }
+
+  /// Format bytes to human readable string
+  String _formatBytes(int bytes) {
+    if (bytes < 1024) return '$bytes B';
+    if (bytes < 1024 * 1024) return '${(bytes / 1024).toStringAsFixed(1)} KB';
+    if (bytes < 1024 * 1024 * 1024) {
+      return '${(bytes / (1024 * 1024)).toStringAsFixed(1)} MB';
+    }
+    return '${(bytes / (1024 * 1024 * 1024)).toStringAsFixed(1)} GB';
+  }
+
+  /// Clear cache
+  Future<void> clearCache() async {
+    state = state.copyWith(isLoading: true);
+
+    try {
+      final tempDir = await getTemporaryDirectory();
+      if (await tempDir.exists()) {
+        await _deleteFolderContents(tempDir);
+      }
+
+      await _calculateCacheSize();
+      state = state.copyWith(isLoading: false);
+    } catch (e) {
+      state = state.copyWith(
+        error: e.toString(),
+        isLoading: false,
+      );
+      rethrow;
+    }
+  }
+
+  /// Delete folder contents
+  Future<void> _deleteFolderContents(Directory dir) async {
+    try {
+      if (await dir.exists()) {
+        await for (final entity in dir.list()) {
+          if (entity is File) {
+            await entity.delete();
+          } else if (entity is Directory) {
+            await entity.delete(recursive: true);
+          }
+        }
+      }
+    } catch (e) {
+      // Ignore errors
+    }
+  }
+}
+
+/// Settings provider
+final settingsProvider = StateNotifierProvider<SettingsNotifier, SettingsState>(
+  (ref) {
+    final authApiService = ref.watch(authApiServiceProvider);
+    return SettingsNotifier(authApiService);
+  },
+);

frontend/lib/presentation/widgets/album/album_track_tile.dart

@@ -0,0 +1,230 @@
+/// Album Track Tile - Track item for album details
+library;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../../domain/entities/track.dart';
+import '../../../../core/theme/colors.dart';
+import '../../providers/music_provider.dart';
+import '../common/cached_network_image_with_fallback.dart';
+
+class AlbumTrackTile extends ConsumerWidget {
+  final Track track;
+  final int index;
+  final VoidCallback? onTap;
+  final VoidCallback? onMenuTap;
+
+  const AlbumTrackTile({
+    required this.track,
+    required this.index,
+    this.onTap,
+    this.onMenuTap,
+    super.key,
+  });
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final playerState = ref.watch(playerProvider);
+    final isCurrentlyPlaying =
+        playerState.currentTrack?.id == track.id && playerState.isPlaying;
+
+    return Container(
+      margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
+      decoration: BoxDecoration(
+        color: AppColors.surface.withOpacity(isCurrentlyPlaying ? 0.8 : 0.4),
+        borderRadius: BorderRadius.circular(12),
+        border: Border.all(
+          color: isCurrentlyPlaying
+              ? AppColors.cyan.withOpacity(0.5)
+              : AppColors.cyan.withOpacity(0.1),
+          width: isCurrentlyPlaying ? 2 : 1,
+        ),
+        boxShadow: isCurrentlyPlaying ? AppColors.cyanGlow : null,
+      ),
+      child: Material(
+        color: Colors.transparent,
+        child: InkWell(
+          onTap: onTap,
+          borderRadius: BorderRadius.circular(12),
+          child: Padding(
+            padding: const EdgeInsets.all(12),
+            child: Row(
+              children: [
+                // Track number or playing indicator
+                _buildTrackIndicator(isCurrentlyPlaying),
+                const SizedBox(width: 16),
+
+                // Track info
+                Expanded(
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Text(
+                        track.title,
+                        style: TextStyle(
+                          color: isCurrentlyPlaying
+                              ? AppColors.cyan
+                              : AppColors.onBackground,
+                          fontWeight:
+                              isCurrentlyPlaying ? FontWeight.w700 : FontWeight.w600,
+                          fontSize: 15,
+                        ),
+                        maxLines: 1,
+                        overflow: TextOverflow.ellipsis,
+                      ),
+                      if (track.artist != null) ...[
+                        const SizedBox(height: 4),
+                        Text(
+                          track.artist!.name,
+                          style: const TextStyle(
+                            color: AppColors.onSurfaceVariant,
+                            fontSize: 13,
+                          ),
+                          maxLines: 1,
+                          overflow: TextOverflow.ellipsis,
+                        ),
+                      ],
+                    ],
+                  ),
+                ),
+
+                // Duration
+                Text(
+                  track.formattedDuration,
+                  style: const TextStyle(
+                    color: AppColors.muted,
+                    fontSize: 13,
+                    fontWeight: FontWeight.w500,
+                  ),
+                ),
+
+                const SizedBox(width: 12),
+
+                // Menu button
+                _buildMenuButton(ref),
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+
+  Widget _buildTrackIndicator(bool isPlaying) {
+    return SizedBox(
+      width: 24,
+      child: isPlaying
+          ? _buildPlayingIndicator()
+          : Text(
+              '${index + 1}',
+              style: const TextStyle(
+                color: AppColors.muted,
+                fontSize: 14,
+                fontWeight: FontWeight.w500,
+              ),
+              textAlign: TextAlign.center,
+            ),
+    );
+  }
+
+  Widget _buildPlayingIndicator() {
+    return SizedBox(
+      width: 24,
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        crossAxisAlignment: CrossAxisAlignment.center,
+        children: [
+          _buildBar(0.6),
+          const SizedBox(height: 2),
+          _buildBar(1.0),
+          const SizedBox(height: 2),
+          _buildBar(0.4),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildBar(double height) {
+    return AnimatedContainer(
+      duration: const Duration(milliseconds: 300),
+      width: 3,
+      height: 8 * height,
+      decoration: BoxDecoration(
+        color: AppColors.cyan,
+        borderRadius: BorderRadius.circular(2),
+      ),
+    );
+  }
+
+  Widget _buildMenuButton(WidgetRef ref) {
+    return PopupMenuButton<String>(
+      icon: const Icon(
+        Icons.more_vert,
+        color: AppColors.muted,
+        size: 20,
+      ),
+      color: AppColors.surface,
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.circular(12),
+        side: BorderSide(
+          color: AppColors.cyan.withOpacity(0.3),
+        ),
+      ),
+      onSelected: (choice) {
+        switch (choice) {
+          case 'queue':
+            ref.read(playerProvider.notifier).addToQueue(track);
+            ScaffoldMessenger.of(ref.context).showSnackBar(
+              SnackBar(
+                content: Text('${track.title} added to queue'),
+                duration: const Duration(seconds: 2),
+                backgroundColor: AppColors.surface,
+                behavior: SnackBarBehavior.floating,
+              ),
+            );
+            break;
+          case 'playlist':
+            // TODO: Implement add to playlist
+            ScaffoldMessenger.of(ref.context).showSnackBar(
+              SnackBar(
+                content: Text('Add to playlist coming soon'),
+                duration: const Duration(seconds: 2),
+                backgroundColor: AppColors.surface,
+                behavior: SnackBarBehavior.floating,
+              ),
+            );
+            break;
+        }
+      },
+      itemBuilder: (context) => [
+        PopupMenuItem<String>(
+          value: 'queue',
+          child: Row(
+            children: const [
+              Icon(Icons.playlist_add, color: AppColors.cyan, size: 20),
+              SizedBox(width: 12),
+              Text(
+                'Add to queue',
+                style: TextStyle(color: AppColors.onBackground),
+              ),
+            ],
+          ),
+        ),
+        PopupMenuItem<String>(
+          value: 'playlist',
+          child: Row(
+            children: const [
+              Icon(Icons.playlist_play, color: AppColors.violet, size: 20),
+              SizedBox(width: 12),
+              Text(
+                'Add to playlist',
+                style: TextStyle(color: AppColors.onBackground),
+              ),
+            ],
+          ),
+        ),
+      ],
+    );
+  }
+}

frontend/lib/presentation/widgets/album/album_widgets.dart

@@ -0,0 +1,4 @@
+/// Album Widgets Export
+library;
+
+export 'album_track_tile.dart';

frontend/lib/presentation/widgets/artist/artist_album_card.dart

@@ -0,0 +1,108 @@
+/// Artist Album Card - Album item for artist details
+library;
+
+import 'package:flutter/material.dart';
+
+import '../../../../domain/entities/album.dart';
+import '../../../../core/theme/colors.dart';
+import '../common/cached_network_image_with_fallback.dart';
+
+class ArtistAlbumCard extends StatelessWidget {
+  final Album album;
+  final VoidCallback? onTap;
+
+  const ArtistAlbumCard({
+    required this.album,
+    this.onTap,
+    super.key,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return GestureDetector(
+      onTap: onTap,
+      child: Container(
+        width: 160,
+        margin: const EdgeInsets.symmetric(horizontal: 8),
+        decoration: BoxDecoration(
+          color: AppColors.surface,
+          borderRadius: BorderRadius.circular(12),
+          border: Border.all(
+            color: AppColors.violet.withOpacity(0.2),
+            width: 1,
+          ),
+        ),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            // Album art
+            Expanded(
+              child: ClipRRect(
+                borderRadius: const BorderRadius.vertical(
+                  top: Radius.circular(12),
+                ),
+                child: Container(
+                  width: double.infinity,
+                  decoration: BoxDecoration(
+                    gradient: AppColors.accentGradient,
+                  ),
+                  child: CachedNetworkImageWithFallback(
+                    imageUrl: album.imageUrl,
+                    fallbackIcon: Icons.album,
+                    progressColor: AppColors.violet,
+                    fit: BoxFit.cover,
+                  ),
+                ),
+              ),
+            ),
+
+            // Album info
+            Padding(
+              padding: const EdgeInsets.all(12),
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  Text(
+                    album.title,
+                    style: const TextStyle(
+                      color: AppColors.onBackground,
+                      fontWeight: FontWeight.w600,
+                      fontSize: 14,
+                    ),
+                    maxLines: 2,
+                    overflow: TextOverflow.ellipsis,
+                  ),
+                  const SizedBox(height: 4),
+                  Text(
+                    _buildAlbumSubtitle(),
+                    style: const TextStyle(
+                      color: AppColors.onSurfaceVariant,
+                      fontSize: 12,
+                    ),
+                    maxLines: 1,
+                    overflow: TextOverflow.ellipsis,
+                  ),
+                ],
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  String _buildAlbumSubtitle() {
+    final parts = <String>[];
+
+    if (album.releaseDate != null) {
+      final year = album.releaseDate!.year;
+      parts.add(year.toString());
+    }
+
+    if (album.totalTracks > 0) {
+      parts.add('${album.totalTracks} songs');
+    }
+
+    return parts.join(' • ');
+  }
+}

frontend/lib/presentation/widgets/artist/artist_track_tile.dart

@@ -0,0 +1,237 @@
+/// Artist Track Tile - Track item for artist details
+library;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../../domain/entities/track.dart';
+import '../../../../core/theme/colors.dart';
+import '../../providers/music_provider.dart';
+import '../common/cached_network_image_with_fallback.dart';
+
+class ArtistTrackTile extends ConsumerWidget {
+  final Track track;
+  final int index;
+  final VoidCallback? onTap;
+
+  const ArtistTrackTile({
+    required this.track,
+    required this.index,
+    this.onTap,
+    super.key,
+  });
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final playerState = ref.watch(playerProvider);
+    final isCurrentlyPlaying =
+        playerState.currentTrack?.id == track.id && playerState.isPlaying;
+
+    return Container(
+      margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
+      decoration: BoxDecoration(
+        color: AppColors.surface.withOpacity(isCurrentlyPlaying ? 0.8 : 0.4),
+        borderRadius: BorderRadius.circular(12),
+        border: Border.all(
+          color: isCurrentlyPlaying
+              ? AppColors.cyan.withOpacity(0.5)
+              : AppColors.cyan.withOpacity(0.1),
+          width: isCurrentlyPlaying ? 2 : 1,
+        ),
+        boxShadow: isCurrentlyPlaying ? AppColors.cyanGlow : null,
+      ),
+      child: Material(
+        color: Colors.transparent,
+        child: InkWell(
+          onTap: onTap,
+          borderRadius: BorderRadius.circular(12),
+          child: Padding(
+            padding: const EdgeInsets.all(12),
+            child: Row(
+              children: [
+                // Track number or playing indicator
+                _buildTrackIndicator(isCurrentlyPlaying),
+                const SizedBox(width: 16),
+
+                // Album art
+                _buildAlbumArt(),
+                const SizedBox(width: 16),
+
+                // Track info
+                Expanded(
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Text(
+                        track.title,
+                        style: TextStyle(
+                          color: isCurrentlyPlaying
+                              ? AppColors.cyan
+                              : AppColors.onBackground,
+                          fontWeight: FontWeight.w600,
+                          fontSize: 15,
+                        ),
+                        maxLines: 1,
+                        overflow: TextOverflow.ellipsis,
+                      ),
+                      if (track.album != null) ...[
+                        const SizedBox(height: 4),
+                        Text(
+                          track.album!.title,
+                          style: const TextStyle(
+                            color: AppColors.onSurfaceVariant,
+                            fontSize: 13,
+                          ),
+                          maxLines: 1,
+                          overflow: TextOverflow.ellipsis,
+                        ),
+                      ],
+                    ],
+                  ),
+                ),
+
+                // Play count
+                if (track.playCount != null)
+                  Padding(
+                    padding: const EdgeInsets.only(right: 16),
+                    child: _buildPlayCount(),
+                  ),
+
+                // Duration
+                Text(
+                  track.formattedDuration,
+                  style: const TextStyle(
+                    color: AppColors.muted,
+                    fontSize: 13,
+                  ),
+                ),
+
+                const SizedBox(width: 12),
+
+                // Add to queue button
+                _buildAddToQueueButton(ref),
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+
+  Widget _buildTrackIndicator(bool isPlaying) {
+    return SizedBox(
+      width: 24,
+      child: isPlaying
+          ? _buildPlayingIndicator()
+          : Text(
+              '${index + 1}',
+              style: const TextStyle(
+                color: AppColors.muted,
+                fontSize: 14,
+                fontWeight: FontWeight.w500,
+              ),
+              textAlign: TextAlign.center,
+            ),
+    );
+  }
+
+  Widget _buildPlayingIndicator() {
+    return SizedBox(
+      width: 24,
+      child: Column(
+        mainAxisAlignment: MainAxisAlignment.center,
+        crossAxisAlignment: CrossAxisAlignment.center,
+        children: [
+          _buildBar(0.6),
+          const SizedBox(height: 2),
+          _buildBar(1.0),
+          const SizedBox(height: 2),
+          _buildBar(0.4),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildBar(double height) {
+    return AnimatedContainer(
+      duration: const Duration(milliseconds: 300),
+      width: 3,
+      height: 8 * height,
+      decoration: BoxDecoration(
+        color: AppColors.cyan,
+        borderRadius: BorderRadius.circular(2),
+      ),
+    );
+  }
+
+  Widget _buildAlbumArt() {
+    return ClipRRect(
+      borderRadius: BorderRadius.circular(8),
+      child: SizedBox(
+        width: 48,
+        height: 48,
+        child: CachedNetworkImageWithFallback(
+          imageUrl: track.imageUrl,
+          fallbackIcon: Icons.album,
+          progressColor: AppColors.cyan,
+          fit: BoxFit.cover,
+        ),
+      ),
+    );
+  }
+
+  Widget _buildPlayCount() {
+    final playCount = track.playCount!;
+    String countText;
+
+    if (playCount >= 1000000) {
+      countText = '${(playCount / 1000000).toStringAsFixed(1)}M';
+    } else if (playCount >= 1000) {
+      countText = '${(playCount / 1000).toStringAsFixed(1)}K';
+    } else {
+      countText = playCount.toString();
+    }
+
+    return Row(
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        const Icon(
+          Icons.play_arrow,
+          size: 16,
+          color: AppColors.muted,
+        ),
+        const SizedBox(width: 4),
+        Text(
+          countText,
+          style: const TextStyle(
+            color: AppColors.muted,
+            fontSize: 13,
+          ),
+        ),
+      ],
+    );
+  }
+
+  Widget _buildAddToQueueButton(WidgetRef ref) {
+    return IconButton(
+      icon: const Icon(
+        Icons.playlist_add,
+        color: AppColors.muted,
+        size: 20,
+      ),
+      onPressed: () {
+        ref.read(playerProvider.notifier).addToQueue(track);
+        ScaffoldMessenger.of(ref.context).showSnackBar(
+          SnackBar(
+            content: Text('${track.title} added to queue'),
+            duration: const Duration(seconds: 2),
+            backgroundColor: AppColors.surface,
+            behavior: SnackBarBehavior.floating,
+          ),
+        );
+      },
+      tooltip: 'Add to queue',
+      splashRadius: 20,
+    );
+  }
+}

frontend/lib/presentation/widgets/artist/artist_widgets.dart

@@ -0,0 +1,5 @@
+/// Artist Widgets - Export all artist-related widgets
+library;
+
+export 'artist_track_tile.dart';
+export 'artist_album_card.dart';

frontend/lib/presentation/widgets/common/cached_network_image_with_fallback.dart

@@ -0,0 +1,62 @@
+/// Cached network image with themed fallback
+library;
+
+import 'package:cached_network_image/cached_network_image.dart';
+import 'package:flutter/material.dart';
+
+import '../../core/theme/colors.dart';
+
+class CachedNetworkImageWithFallback extends StatelessWidget {
+  final String? imageUrl;
+  final IconData fallbackIcon;
+  final Color? progressColor;
+  final BoxFit? fit;
+
+  const CachedNetworkImageWithFallback({
+    required this.imageUrl,
+    required this.fallbackIcon,
+    this.progressColor,
+    this.fit,
+    super.key,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return imageUrl != null && imageUrl!.isNotEmpty
+        ? CachedNetworkImage(
+            imageUrl: imageUrl!,
+            fit: fit ?? BoxFit.cover,
+            placeholder: (context, url) => Container(
+              color: AppColors.surfaceVariant,
+              child: Center(
+                child: CircularProgressIndicator(
+                  strokeWidth: 2,
+                  valueColor: AlwaysStoppedAnimation<Color>(
+                    progressColor ?? AppColors.cyan,
+                  ),
+                ),
+              ),
+            ),
+            errorWidget: (context, url, error) => Container(
+              color: AppColors.surfaceVariant,
+              child: Center(
+                child: Icon(
+                  fallbackIcon,
+                  color: AppColors.onBackground.withOpacity(0.8),
+                  size: 40,
+                ),
+              ),
+            ),
+          )
+        : Container(
+            color: AppColors.surfaceVariant,
+            child: Center(
+              child: Icon(
+                fallbackIcon,
+                color: AppColors.onBackground.withOpacity(0.8),
+                size: 40,
+              ),
+            ),
+          );
+  }
+}

frontend/lib/presentation/widgets/common/mini_player.dart

@@ -0,0 +1,408 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../core/theme/colors.dart';
+import '../../providers/music_provider.dart';
+import '../../pages/player/queue_view_page.dart';
+
+/// Mini Player Widget
+class MiniPlayer extends ConsumerWidget {
+  final bool compact;
+
+  const MiniPlayer({
+    super.key,
+    this.compact = false,
+  });
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final playerState = ref.watch(playerProvider);
+    final currentTrack = playerState.currentTrack;
+    final isPlaying = playerState.isPlaying;
+
+    return GestureDetector(
+      onTap: () {
+        // TODO: Open fullscreen player
+      },
+      child: Container(
+        height: 64,
+        decoration: BoxDecoration(
+          color: AppColors.surface,
+          border: Border(
+            top: BorderSide(
+              color: AppColors.cyan.withOpacity(0.2),
+              width: 1,
+            ),
+          ),
+          boxShadow: [
+            BoxShadow(
+              color: AppColors.cyan.withOpacity(0.1),
+              blurRadius: 10,
+              offset: const Offset(0, -2),
+            ),
+          ],
+        ),
+        child: Padding(
+          padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+          child: Row(
+            children: [
+              // Album art
+              _buildAlbumArt(currentTrack),
+
+              const SizedBox(width: 12),
+
+              // Track info
+              Expanded(
+                child: _buildTrackInfo(currentTrack, playerState),
+              ),
+
+              const SizedBox(width: 12),
+
+              // Controls
+              if (!compact)
+                _buildControls(ref, isPlaying)
+              else
+                _buildCompactControls(ref, isPlaying),
+
+              // Queue button
+              if (!compact) _buildQueueButton(context, ref),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+
+  Widget _buildAlbumArt(dynamic currentTrack) {
+    return Container(
+      width: 48,
+      height: 48,
+      decoration: BoxDecoration(
+        gradient: AppColors.accentGradient,
+        borderRadius: BorderRadius.circular(6),
+        boxShadow: AppColors.violetGlow,
+      ),
+      child: currentTrack?.imageUrl != null
+          ? ClipRRect(
+              borderRadius: BorderRadius.circular(6),
+              child: Image.network(
+                currentTrack!.imageUrl!,
+                fit: BoxFit.cover,
+                errorBuilder: (context, error, stackTrace) {
+                  return const Icon(
+                    Icons.music_note,
+                    color: AppColors.onBackground,
+                    size: 24,
+                  );
+                },
+              ),
+            )
+          : const Icon(
+              Icons.music_note,
+              color: AppColors.onBackground,
+              size: 24,
+            ),
+    );
+  }
+
+  Widget _buildTrackInfo(dynamic currentTrack, PlayerState playerState) {
+    if (currentTrack == null) {
+      return Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        mainAxisAlignment: MainAxisAlignment.center,
+        mainAxisSize: MainAxisSize.min,
+        children: const [
+          Text(
+            'No track playing',
+            style: TextStyle(
+              color: AppColors.onSurface,
+              fontSize: 14,
+              fontWeight: FontWeight.w500,
+            ),
+            maxLines: 1,
+            overflow: TextOverflow.ellipsis,
+          ),
+          SizedBox(height: 2),
+          Text(
+            'Tap to select music',
+            style: TextStyle(
+              color: AppColors.muted,
+              fontSize: 12,
+            ),
+            maxLines: 1,
+            overflow: TextOverflow.ellipsis,
+          ),
+        ],
+      );
+    }
+
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      mainAxisAlignment: MainAxisAlignment.center,
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        Row(
+          children: [
+            if (playerState.isPlaying)
+              Container(
+                width: 4,
+                height: 4,
+                margin: const EdgeInsets.only(right: 6),
+                decoration: const BoxDecoration(
+                  color: AppColors.vert,
+                  shape: BoxShape.circle,
+                ),
+              ),
+            Expanded(
+              child: Text(
+                currentTrack.title,
+                style: const TextStyle(
+                  color: AppColors.onSurface,
+                  fontSize: 14,
+                  fontWeight: FontWeight.w500,
+                ),
+                maxLines: 1,
+                overflow: TextOverflow.ellipsis,
+              ),
+            ),
+          ],
+        ),
+        const SizedBox(height: 2),
+        Text(
+          currentTrack.artist?.name ?? 'Unknown Artist',
+          style: const TextStyle(
+            color: AppColors.muted,
+            fontSize: 12,
+          ),
+          maxLines: 1,
+          overflow: TextOverflow.ellipsis,
+        ),
+      ],
+    );
+  }
+
+  Widget _buildControls(WidgetRef ref, bool isPlaying) {
+    return Row(
+      children: [
+        _ControlButton(
+          icon: Icons.skip_previous,
+          onTap: () {
+            ref.read(playerProvider.notifier).previous();
+          },
+        ),
+        const SizedBox(width: 8),
+        _ControlButton(
+          icon: isPlaying ? Icons.pause : Icons.play_arrow,
+          isPrimary: true,
+          onTap: () {
+            if (isPlaying) {
+              ref.read(playerProvider.notifier).pause();
+            } else {
+              ref.read(playerProvider.notifier).play();
+            }
+          },
+        ),
+        const SizedBox(width: 8),
+        _ControlButton(
+          icon: Icons.skip_next,
+          onTap: () {
+            ref.read(playerProvider.notifier).next();
+          },
+        ),
+      ],
+    );
+  }
+
+  Widget _buildCompactControls(WidgetRef ref, bool isPlaying) {
+    return _ControlButton(
+      icon: isPlaying ? Icons.pause : Icons.play_arrow,
+      isPrimary: true,
+      size: 40,
+      onTap: () {
+        if (isPlaying) {
+          ref.read(playerProvider.notifier).pause();
+        } else {
+          ref.read(playerProvider.notifier).play();
+        }
+      },
+    );
+  }
+
+  Widget _buildQueueButton(BuildContext context, WidgetRef ref) {
+    final queueData = ref.watch(queueProvider);
+
+    return Row(
+      children: [
+        const SizedBox(width: 8),
+        MouseRegion(
+          cursor: SystemMouseCursors.click,
+          child: GestureDetector(
+            onTap: () => _openQueueView(context),
+            child: Container(
+              width: 40,
+              height: 40,
+              decoration: BoxDecoration(
+                color: AppColors.surfaceVariant,
+                borderRadius: BorderRadius.circular(8),
+                border: Border.all(
+                  color: queueData.hasNextTracks
+                      ? AppColors.violet.withOpacity(0.5)
+                      : Colors.transparent,
+                  width: 1,
+                ),
+              ),
+              child: Stack(
+                alignment: Alignment.center,
+                children: [
+                  const Icon(
+                    Icons.queue_music,
+                    color: AppColors.onSurface,
+                    size: 20,
+                  ),
+                  if (queueData.hasNextTracks)
+                    Positioned(
+                      top: 6,
+                      right: 6,
+                      child: Container(
+                        padding: const EdgeInsets.all(2),
+                        decoration: BoxDecoration(
+                          color: AppColors.violet,
+                          shape: BoxShape.circle,
+                        ),
+                        child: Text(
+                          queueData.queueCount > 9
+                              ? '9+'
+                              : '${queueData.queueCount}',
+                          style: const TextStyle(
+                            color: AppColors.primary,
+                            fontSize: 8,
+                            fontWeight: FontWeight.w600,
+                          ),
+                        ),
+                      ),
+                    ),
+                ],
+              ),
+            ),
+          ),
+        ),
+      ],
+    );
+  }
+
+  void _openQueueView(BuildContext context) {
+    Navigator.of(context).push(
+      PageRouteBuilder(
+        pageBuilder: (context, animation, secondaryAnimation) {
+          return const QueueViewPage();
+        },
+        transitionsBuilder: (context, animation, secondaryAnimation, child) {
+          const begin = Offset(0.0, 1.0);
+          const end = Offset.zero;
+          const curve = Curves.easeInOut;
+
+          var tween = Tween(begin: begin, end: end).chain(
+            CurveTween(curve: curve),
+          );
+
+          return SlideTransition(
+            position: animation.drive(tween),
+            child: child,
+          );
+        },
+      ),
+    );
+  }
+}
+
+/// Control Button
+class _ControlButton extends StatefulWidget {
+  final IconData icon;
+  final bool isPrimary;
+  final double? size;
+  final VoidCallback onTap;
+
+  const _ControlButton({
+    required this.icon,
+    this.isPrimary = false,
+    this.size,
+    required this.onTap,
+  });
+
+  @override
+  State<_ControlButton> createState() => _ControlButtonState();
+}
+
+class _ControlButtonState extends State<_ControlButton>
+    with SingleTickerProviderStateMixin {
+  late AnimationController _animationController;
+  late Animation<double> _scaleAnimation;
+  bool _isPressed = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _animationController = AnimationController(
+      duration: const Duration(milliseconds: 100),
+      vsync: this,
+    );
+    _scaleAnimation = Tween<double>(begin: 1.0, end: 0.95).animate(
+      CurvedAnimation(
+        parent: _animationController,
+        curve: Curves.easeOut,
+      ),
+    );
+  }
+
+  @override
+  void dispose() {
+    _animationController.dispose();
+    super.dispose();
+  }
+
+  void _handleTapDown(TapDownDetails details) {
+    setState(() => _isPressed = true);
+    _animationController.forward();
+  }
+
+  void _handleTapUp(TapUpDetails details) {
+    setState(() => _isPressed = false);
+    _animationController.reverse();
+  }
+
+  void _handleTapCancel() {
+    setState(() => _isPressed = false);
+    _animationController.reverse();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final size = widget.size ?? (widget.isPrimary ? 50 : 40);
+
+    return GestureDetector(
+      onTapDown: _handleTapDown,
+      onTapUp: _handleTapUp,
+      onTapCancel: _handleTapCancel,
+      onTap: widget.onTap,
+      child: ScaleTransition(
+        scale: _scaleAnimation,
+        child: Container(
+          width: size,
+          height: size,
+          decoration: BoxDecoration(
+            color: widget.isPrimary
+                ? AppColors.cyan
+                : AppColors.surfaceVariant,
+            shape: BoxShape.circle,
+            boxShadow: widget.isPrimary ? AppColors.cyanGlow : null,
+          ),
+          child: Icon(
+            widget.icon,
+            color: widget.isPrimary ? AppColors.primary : AppColors.onSurface,
+            size: size * 0.5,
+          ),
+        ),
+      ),
+    );
+  }
+}

frontend/lib/presentation/widgets/desktop/desktop_sidebar.dart

@@ -0,0 +1,184 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+
+import '../../../core/theme/colors.dart';
+import '../../providers/navigation_provider.dart';
+import '../common/mini_player.dart';
+
+/// Desktop Navigation Sidebar
+class DesktopSidebar extends ConsumerWidget {
+  final double width;
+
+  const DesktopSidebar({
+    super.key,
+    required this.width,
+  });
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final currentPage = ref.watch(currentPageProvider);
+    final navigationNotifier = ref.read(navigationProvider.notifier);
+
+    return Container(
+      width: width,
+      decoration: BoxDecoration(
+        color: AppColors.surface,
+        border: Border(
+          right: BorderSide(
+            color: AppColors.cyan.withOpacity(0.1),
+            width: 1,
+          ),
+        ),
+      ),
+      child: Column(
+        children: [
+          // Logo
+          const Padding(
+            padding: EdgeInsets.all(24),
+            child: Text(
+              'Spotify Le 2',
+              style: TextStyle(
+                fontSize: 24,
+                fontWeight: FontWeight.bold,
+                foreground: AppColors.primaryGradient,
+              ),
+            ),
+          ),
+
+          const Divider(height: 1, color: AppColors.surfaceVariant),
+
+          // Navigation items
+          Expanded(
+            child: ListView(
+              padding: const EdgeInsets.symmetric(vertical: 8),
+              children: [
+                ..._navItems.map(
+                  (item) => _NavItemTile(
+                    icon: item.icon,
+                    label: item.label,
+                    isSelected: currentPage == item.page,
+                    onTap: () => navigationNotifier.navigateTo(item.page),
+                  ),
+                ),
+              ],
+            ),
+          ),
+
+          // Mini player in sidebar
+          const Padding(
+            padding: EdgeInsets.all(16),
+            child: MiniPlayer(compact: true),
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+class _NavItem {
+  final String page;
+  final String label;
+  final IconData icon;
+
+  const _NavItem({
+    required this.page,
+    required this.label,
+    required this.icon,
+  });
+}
+
+final List<_NavItem> _navItems = const [
+  _NavItem(page: 'home', label: 'Home', icon: Icons.home_outlined),
+  _NavItem(page: 'search', label: 'Search', icon: Icons.search_outlined),
+  _NavItem(page: 'library', label: 'Library', icon: Icons.library_music_outlined),
+  _NavItem(page: 'settings', label: 'Settings', icon: Icons.settings_outlined),
+];
+
+/// Navigation Item Tile
+class _NavItemTile extends StatefulWidget {
+  final IconData icon;
+  final String label;
+  final bool isSelected;
+  final VoidCallback onTap;
+
+  const _NavItemTile({
+    required this.icon,
+    required this.label,
+    required this.isSelected,
+    required this.onTap,
+  });
+
+  @override
+  State<_NavItemTile> createState() => _NavItemTileState();
+}
+
+class _NavItemTileState extends State<_NavItemTile>
+    with SingleTickerProviderStateMixin {
+  late AnimationController _animationController;
+  late Animation<double> _scaleAnimation;
+
+  @override
+  void initState() {
+    super.initState();
+    _animationController = AnimationController(
+      duration: const Duration(milliseconds: 200),
+      vsync: this,
+    );
+    _scaleAnimation = Tween<double>(begin: 1.0, end: 1.02).animate(
+      CurvedAnimation(
+        parent: _animationController,
+        curve: Curves.easeOut,
+      ),
+    );
+  }
+
+  @override
+  void dispose() {
+    _animationController.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return MouseRegion(
+      onEnter: (_) => _animationController.forward(),
+      onExit: (_) => _animationController.reverse(),
+      child: ScaleTransition(
+        scale: _scaleAnimation,
+        child: AnimatedContainer(
+          duration: const Duration(milliseconds: 200),
+          margin: const EdgeInsets.symmetric(horizontal: 12, vertical: 4),
+          decoration: BoxDecoration(
+            color: widget.isSelected
+                ? AppColors.cyan.withOpacity(0.1)
+                : Colors.transparent,
+            borderRadius: BorderRadius.circular(8),
+            border: Border.all(
+              color: widget.isSelected
+                  ? AppColors.cyan.withOpacity(0.3)
+                  : Colors.transparent,
+              width: 1,
+            ),
+          ),
+          child: ListTile(
+            leading: Icon(
+              widget.icon,
+              color: widget.isSelected ? AppColors.cyan : AppColors.onSurface,
+            ),
+            title: Text(
+              widget.label,
+              style: TextStyle(
+                color: widget.isSelected
+                    ? AppColors.cyan
+                    : AppColors.onSurface,
+                fontWeight:
+                    widget.isSelected ? FontWeight.w600 : FontWeight.w400,
+              ),
+            ),
+            onTap: widget.onTap,
+          ),
+        ),
+      ),
+    );
+  }
+}

frontend/lib/presentation/widgets/desktop/desktop_top_bar.dart

@@ -0,0 +1,135 @@
+import 'package:flutter/material.dart';
+
+import '../../../core/theme/colors.dart';
+
+/// Desktop Top Bar
+class DesktopTopBar extends StatelessWidget {
+  const DesktopTopBar({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      height: 60,
+      padding: const EdgeInsets.symmetric(horizontal: 24),
+      decoration: BoxDecoration(
+        color: AppColors.surface,
+        border: Border(
+          bottom: BorderSide(
+            color: AppColors.cyan.withOpacity(0.1),
+            width: 1,
+          ),
+        ),
+      ),
+      child: Row(
+        children: [
+          // Search bar
+          Expanded(
+            child: _SearchBar(),
+          ),
+
+          const SizedBox(width: 16),
+
+          // User profile
+          // TODO: Implement user profile menu
+          const _UserAvatar(),
+        ],
+      ),
+    );
+  }
+}
+
+/// Search Bar
+class _SearchBar extends StatefulWidget {
+  @override
+  State<_SearchBar> createState() => _SearchBarState();
+}
+
+class _SearchBarState extends State<_SearchBar> {
+  final _focusNode = FocusNode();
+  bool _isFocused = false;
+
+  @override
+  void initState() {
+    super.initState();
+    _focusNode.addListener(() {
+      setState(() {
+        _isFocused = _focusNode.hasFocus;
+      });
+    });
+  }
+
+  @override
+  void dispose() {
+    _focusNode.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return AnimatedContainer(
+      duration: const Duration(milliseconds: 200),
+      decoration: BoxDecoration(
+        color: AppColors.surfaceVariant,
+        borderRadius: BorderRadius.circular(24),
+        border: Border.all(
+          color: _isFocused ? AppColors.cyan : AppColors.cyan.withOpacity(0.2),
+          width: _isFocused ? 2 : 1,
+        ),
+        boxShadow: _isFocused
+            ? [
+                BoxShadow(
+                  color: AppColors.cyan.withOpacity(0.3),
+                  blurRadius: 20,
+                  spreadRadius: 0,
+                ),
+              ]
+            : null,
+      ),
+      child: TextField(
+        focusNode: _focusNode,
+        style: const TextStyle(
+          color: AppColors.onSurface,
+          fontSize: 14,
+        ),
+        decoration: InputDecoration(
+          hintText: 'Search tracks, artists, albums...',
+          hintStyle: TextStyle(
+            color: AppColors.muted,
+            fontSize: 14,
+          ),
+          prefixIcon: const Icon(
+            Icons.search,
+            color: AppColors.cyan,
+          ),
+          border: InputBorder.none,
+          contentPadding: const EdgeInsets.symmetric(
+            horizontal: 20,
+            vertical: 12,
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+/// User Avatar
+class _UserAvatar extends StatelessWidget {
+  const _UserAvatar();
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      width: 40,
+      height: 40,
+      decoration: BoxDecoration(
+        gradient: AppColors.primaryGradient,
+        borderRadius: BorderRadius.circular(20),
+        boxShadow: AppColors.cyanGlow,
+      ),
+      child: const Icon(
+        Icons.person,
+        color: AppColors.onBackground,
+      ),
+    );
+  }
+}

frontend/lib/presentation/widgets/library/playlist_tile.dart

@@ -0,0 +1,116 @@
+import 'package:flutter/material.dart';
+
+import '../../../../core/theme/colors.dart';
+import '../../../../domain/entities/playlist.dart';
+import '../common/cached_network_image_with_fallback.dart';
+
+/// Playlist tile widget for library
+class PlaylistTile extends StatelessWidget {
+  final Playlist playlist;
+  final VoidCallback? onTap;
+  final VoidCallback? onDelete;
+  final bool canDelete;
+
+  const PlaylistTile({
+    required this.playlist,
+    this.onTap,
+    this.onDelete,
+    this.canDelete = false,
+    super.key,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return GestureDetector(
+      onTap: onTap,
+      child: Container(
+        decoration: BoxDecoration(
+          color: AppColors.surfaceVariant,
+          borderRadius: BorderRadius.circular(12),
+          border: Border.all(
+            color: AppColors.cyan.withOpacity(0.2),
+            width: 1,
+          ),
+        ),
+        child: Row(
+          children: [
+            // Playlist cover
+            ClipRRect(
+              borderRadius: const BorderRadius.horizontal(
+                left: Radius.circular(12),
+              ),
+              child: SizedBox(
+                width: 80,
+                height: 80,
+                child: Container(
+                  decoration: BoxDecoration(
+                    gradient: AppColors.primaryGradient,
+                  ),
+                  child: CachedNetworkImageWithFallback(
+                    imageUrl: playlist.imageUrl,
+                    fallbackIcon: Icons.playlist_play,
+                    progressColor: AppColors.cyan,
+                    fit: BoxFit.cover,
+                  ),
+                ),
+              ),
+            ),
+
+            // Playlist info
+            Expanded(
+              child: Padding(
+                padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  mainAxisAlignment: MainAxisAlignment.center,
+                  children: [
+                    Text(
+                      playlist.name,
+                      style: const TextStyle(
+                        color: AppColors.onSurface,
+                        fontWeight: FontWeight.w600,
+                        fontSize: 16,
+                      ),
+                      maxLines: 1,
+                      overflow: TextOverflow.ellipsis,
+                    ),
+                    const SizedBox(height: 4),
+                    Text(
+                      '${playlist.trackCount} songs • ${playlist.formattedDuration}',
+                      style: const TextStyle(
+                        color: AppColors.muted,
+                        fontSize: 13,
+                      ),
+                    ),
+                    if (playlist.description != null &&
+                        playlist.description!.isNotEmpty)
+                      Padding(
+                        padding: const EdgeInsets.only(top: 4),
+                        child: Text(
+                          playlist.description!,
+                          style: const TextStyle(
+                            color: AppColors.muted,
+                            fontSize: 12,
+                          ),
+                          maxLines: 1,
+                          overflow: TextOverflow.ellipsis,
+                        ),
+                      ),
+                  ],
+                ),
+              ),
+            ),
+
+            // Delete button (if owned)
+            if (canDelete && onDelete != null)
+              IconButton(
+                icon: const Icon(Icons.delete_outline, color: AppColors.muted),
+                onPressed: onDelete,
+                tooltip: 'Delete playlist',
+              ),
+          ],
+        ),
+      ),
+    );
+  }
+}

frontend/lib/presentation/widgets/player/queue_track_tile.dart

@@ -0,0 +1,287 @@
+import 'package:flutter/material.dart';
+
+import '../../../../core/theme/colors.dart';
+import '../../../../domain/entities/track.dart';
+
+/// Queue Track Tile Widget
+///
+/// Displays a track in the queue with:
+/// - Track info (art, title, artist, duration)
+/// - Remove button
+/// - Drag handle
+/// - Visual indication for currently playing track
+class QueueTrackTile extends StatelessWidget {
+  final Track track;
+  final bool isPlaying;
+  final int index;
+  final VoidCallback? onTap;
+  final VoidCallback? onRemove;
+  final bool isDragging;
+
+  const QueueTrackTile({
+    super.key,
+    required this.track,
+    this.isPlaying = false,
+    required this.index,
+    this.onTap,
+    this.onRemove,
+    this.isDragging = false,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
+      decoration: BoxDecoration(
+        color: isPlaying
+            ? AppColors.cyan.withOpacity(0.1)
+            : AppColors.surfaceVariant,
+        borderRadius: BorderRadius.circular(12),
+        border: Border.all(
+          color: isPlaying
+              ? AppColors.cyan.withOpacity(0.3)
+              : AppColors.surfaceVariant,
+          width: 1,
+        ),
+        boxShadow: isPlaying
+            ? [
+                BoxShadow(
+                  color: AppColors.cyan.withOpacity(0.1),
+                  blurRadius: 10,
+                  spreadRadius: 1,
+                ),
+              ]
+            : null,
+      ),
+      child: Material(
+        color: Colors.transparent,
+        child: InkWell(
+          onTap: onTap,
+          borderRadius: BorderRadius.circular(12),
+          child: Padding(
+            padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
+            child: Row(
+              children: [
+                // Drag handle
+                _buildDragHandle(),
+
+                const SizedBox(width: 8),
+
+                // Track number or playing indicator
+                _buildTrackIndicator(),
+
+                const SizedBox(width: 12),
+
+                // Album art
+                _buildAlbumArt(),
+
+                const SizedBox(width: 12),
+
+                // Track info
+                Expanded(
+                  child: _buildTrackInfo(),
+                ),
+
+                const SizedBox(width: 12),
+
+                // Duration
+                _buildDuration(),
+
+                const SizedBox(width: 8),
+
+                // Remove button
+                if (onRemove != null) _buildRemoveButton(),
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+
+  Widget _buildDragHandle() {
+    return MouseRegion(
+      cursor: SystemMouseCursors.grab,
+      child: Container(
+        padding: const EdgeInsets.symmetric(vertical: 8),
+        child: Icon(
+          Icons.drag_handle,
+          color: AppColors.muted,
+          size: 20,
+        ),
+      ),
+    );
+  }
+
+  Widget _buildTrackIndicator() {
+    if (isPlaying) {
+      return SizedBox(
+        width: 20,
+        child: _PlayingAnimation(),
+      );
+    }
+
+    return SizedBox(
+      width: 20,
+      child: Text(
+        '${index + 1}',
+        style: const TextStyle(
+          color: AppColors.muted,
+          fontSize: 14,
+          fontWeight: FontWeight.w500,
+        ),
+        textAlign: TextAlign.center,
+      ),
+    );
+  }
+
+  Widget _buildAlbumArt() {
+    return Container(
+      width: 48,
+      height: 48,
+      decoration: BoxDecoration(
+        gradient: AppColors.accentGradient,
+        borderRadius: BorderRadius.circular(8),
+        boxShadow: isPlaying ? AppColors.violetGlow : null,
+      ),
+      child: track.imageUrl != null
+          ? ClipRRect(
+              borderRadius: BorderRadius.circular(8),
+              child: Image.network(
+                track.imageUrl!,
+                fit: BoxFit.cover,
+                errorBuilder: (context, error, stackTrace) {
+                  return const Icon(
+                    Icons.music_note,
+                    color: AppColors.onBackground,
+                    size: 24,
+                  );
+                },
+              ),
+            )
+          : const Icon(
+              Icons.music_note,
+              color: AppColors.onBackground,
+              size: 24,
+            ),
+    );
+  }
+
+  Widget _buildTrackInfo() {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        Text(
+          track.title,
+          style: TextStyle(
+            color: isPlaying ? AppColors.cyan : AppColors.onSurface,
+            fontSize: 14,
+            fontWeight: isPlaying ? FontWeight.w600 : FontWeight.w500,
+          ),
+          maxLines: 1,
+          overflow: TextOverflow.ellipsis,
+        ),
+        const SizedBox(height: 2),
+        Text(
+          track.artist?.name ?? 'Unknown Artist',
+          style: const TextStyle(
+            color: AppColors.muted,
+            fontSize: 12,
+          ),
+          maxLines: 1,
+          overflow: TextOverflow.ellipsis,
+        ),
+      ],
+    );
+  }
+
+  Widget _buildDuration() {
+    return Text(
+      track.formattedDuration,
+      style: const TextStyle(
+        color: AppColors.muted,
+        fontSize: 12,
+        fontWeight: FontWeight.w500,
+      ),
+    );
+  }
+
+  Widget _buildRemoveButton() {
+    return MouseRegion(
+      cursor: SystemMouseCursors.click,
+      child: GestureDetector(
+        onTap: onRemove,
+        child: Container(
+          padding: const EdgeInsets.all(8),
+          decoration: BoxDecoration(
+            color: AppColors.rouge.withOpacity(0.1),
+            borderRadius: BorderRadius.circular(8),
+          ),
+          child: const Icon(
+            Icons.close,
+            color: AppColors.rouge,
+            size: 18,
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+/// Playing Animation Widget
+class _PlayingAnimation extends StatefulWidget {
+  @override
+  State<_PlayingAnimation> createState() => _PlayingAnimationState();
+}
+
+class _PlayingAnimationState extends State<_PlayingAnimation>
+    with SingleTickerProviderStateMixin {
+  late AnimationController _controller;
+
+  @override
+  void initState() {
+    super.initState();
+    _controller = AnimationController(
+      duration: const Duration(milliseconds: 800),
+      vsync: this,
+    )..repeat();
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return AnimatedBuilder(
+      animation: _controller,
+      builder: (context, child) {
+        return Row(
+          mainAxisAlignment: MainAxisAlignment.center,
+          children: List.generate(3, (index) {
+            final delay = index * 0.2;
+            final animation = _controller
+                .drive(CurveTween(curve: Curves.easeInOut))
+                .drive(Tween<double>(begin: 0.3, end: 1.0));
+
+            return Transform.scale(
+              scale: (animation.value - delay + 1) % 1 * 0.7 + 0.3,
+              child: Container(
+                width: 3,
+                height: 12,
+                margin: const EdgeInsets.symmetric(horizontal: 1),
+                decoration: BoxDecoration(
+                  color: AppColors.cyan,
+                  borderRadius: BorderRadius.circular(2),
+                ),
+              ),
+            );
+          }),
+        );
+      },
+    );
+  }
+}

frontend/lib/presentation/widgets/playlist/playlist_track_tile.dart

@@ -0,0 +1,292 @@
+/// Playlist Track Tile - Displays a track in a playlist with drag-to-reorder support
+library;
+
+import 'package:flutter/material.dart';
+
+import '../../../../domain/entities/track.dart';
+import '../../../../core/theme/colors.dart';
+import '../common/cached_network_image_with_fallback.dart';
+
+/// Playlist track tile
+class PlaylistTrackTile extends StatelessWidget {
+  final Track track;
+  final int position;
+  final bool isOwner;
+  final bool isDragging;
+  final VoidCallback? onTap;
+  final VoidCallback? onRemove;
+  final VoidCallback? onAddToQueue;
+  final VoidCallback? onDragStart;
+
+  const PlaylistTrackTile({
+    required this.track,
+    required this.position,
+    this.isOwner = false,
+    this.isDragging = false,
+    this.onTap,
+    this.onRemove,
+    this.onAddToQueue,
+    this.onDragStart,
+    super.key,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
+      decoration: BoxDecoration(
+        color: isDragging
+            ? AppColors.surfaceElevated.withOpacity(0.5)
+            : AppColors.surface,
+        borderRadius: BorderRadius.circular(8),
+        border: Border.all(
+          color: isDragging
+              ? AppColors.cyan.withOpacity(0.5)
+              : Colors.transparent,
+          width: 2,
+        ),
+      ),
+      child: Material(
+        color: Colors.transparent,
+        child: InkWell(
+          onTap: onTap,
+          borderRadius: BorderRadius.circular(8),
+          child: Padding(
+            padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 8),
+            child: Row(
+              children: [
+                // Drag handle (for owners)
+                if (isOwner)
+                  _buildDragHandle()
+                else
+                  _buildPositionNumber(),
+
+                const SizedBox(width: 12),
+
+                // Album art
+                _buildAlbumArt(),
+
+                const SizedBox(width: 12),
+
+                // Track info
+                Expanded(
+                  child: _buildTrackInfo(),
+                ),
+
+                // Duration
+                _buildDuration(),
+
+                const SizedBox(width: 8),
+
+                // Menu button
+                _buildMenuButton(context),
+
+                // Remove button (for owners)
+                if (isOwner) ...[
+                  const SizedBox(width: 8),
+                  _buildRemoveButton(),
+                ],
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+
+  Widget _buildDragHandle() {
+    return GestureDetector(
+      onPanStart: (_) => onDragStart?.call(),
+      child: Container(
+        width: 24,
+        height: 24,
+        alignment: Alignment.center,
+        child: Icon(
+          Icons.drag_handle,
+          color: AppColors.onSurfaceVariant,
+          size: 20,
+        ),
+      ),
+    );
+  }
+
+  Widget _buildPositionNumber() {
+    return SizedBox(
+      width: 24,
+      child: Text(
+        '${position + 1}',
+        style: TextStyle(
+          color: AppColors.onSurfaceVariant,
+          fontSize: 14,
+          fontWeight: FontWeight.w500,
+        ),
+        textAlign: TextAlign.center,
+      ),
+    );
+  }
+
+  Widget _buildAlbumArt() {
+    return ClipRRect(
+      borderRadius: BorderRadius.circular(6),
+      child: SizedBox(
+        width: 48,
+        height: 48,
+        child: CachedNetworkImageWithFallback(
+          imageUrl: track.imageUrl,
+          fallbackIcon: Icons.music_note,
+          progressColor: AppColors.cyan,
+          fit: BoxFit.cover,
+        ),
+      ),
+    );
+  }
+
+  Widget _buildTrackInfo() {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.start,
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        Text(
+          track.title,
+          style: const TextStyle(
+            color: AppColors.onBackground,
+            fontSize: 15,
+            fontWeight: FontWeight.w600,
+          ),
+          maxLines: 1,
+          overflow: TextOverflow.ellipsis,
+        ),
+        const SizedBox(height: 2),
+        Text(
+          track.artist?.name ?? 'Unknown Artist',
+          style: const TextStyle(
+            color: AppColors.onSurfaceVariant,
+            fontSize: 13,
+          ),
+          maxLines: 1,
+          overflow: TextOverflow.ellipsis,
+        ),
+      ],
+    );
+  }
+
+  Widget _buildDuration() {
+    return Text(
+      track.formattedDuration,
+      style: const TextStyle(
+        color: AppColors.onSurfaceVariant,
+        fontSize: 13,
+        fontWeight: FontWeight.w500,
+      ),
+    );
+  }
+
+  Widget _buildMenuButton(BuildContext context) {
+    return PopupMenuButton<String>(
+      icon: Icon(
+        Icons.more_vert,
+        color: AppColors.onSurfaceVariant,
+      ),
+      color: AppColors.surfaceElevated,
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.circular(8),
+        side: BorderSide(
+          color: AppColors.cyan.withOpacity(0.3),
+        ),
+      ),
+      onSelected: (value) {
+        switch (value) {
+          case 'queue':
+            onAddToQueue?.call();
+            break;
+          case 'remove':
+            onRemove?.call();
+            break;
+        }
+      },
+      itemBuilder: (context) => [
+        PopupMenuItem(
+          value: 'queue',
+          child: Row(
+            children: [
+              Icon(Icons.queue_music, color: AppColors.cyan, size: 20),
+              const SizedBox(width: 12),
+              const Text(
+                'Add to queue',
+                style: TextStyle(color: AppColors.onBackground),
+              ),
+            ],
+          ),
+        ),
+        if (isOwner)
+          PopupMenuItem(
+            value: 'remove',
+            child: Row(
+              children: [
+                Icon(Icons.remove_circle_outline, color: AppColors.rose, size: 20),
+                const SizedBox(width: 12),
+                const Text(
+                  'Remove from playlist',
+                  style: TextStyle(color: AppColors.onBackground),
+                ),
+              ],
+            ),
+          ),
+      ],
+    );
+  }
+
+  Widget _buildRemoveButton() {
+    return IconButton(
+      icon: Icon(
+        Icons.remove_circle_outline,
+        color: AppColors.rose,
+        size: 20,
+      ),
+      onPressed: onRemove,
+      tooltip: 'Remove from playlist',
+      padding: EdgeInsets.zero,
+      constraints: const BoxConstraints(
+        minWidth: 32,
+        minHeight: 32,
+      ),
+    );
+  }
+}
+
+/// Reorderable playlist track tile
+class ReorderablePlaylistTrackTile extends StatelessWidget {
+  final Track track;
+  final int position;
+  final bool isOwner;
+  final VoidCallback? onTap;
+  final VoidCallback? onRemove;
+  final VoidCallback? onAddToQueue;
+
+  const ReorderablePlaylistTrackTile({
+    required this.track,
+    required this.position,
+    this.isOwner = false,
+    this.onTap,
+    this.onRemove,
+    this.onAddToQueue,
+    super.key,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return ReorderableDragStartListener(
+      key: ValueKey(track.id),
+      index: position,
+      enabled: isOwner,
+      child: PlaylistTrackTile(
+        track: track,
+        position: position,
+        isOwner: isOwner,
+        onTap: onTap,
+        onRemove: onRemove,
+        onAddToQueue: onAddToQueue,
+      ),
+    );
+  }
+}

frontend/lib/presentation/widgets/search/search_album_card.dart

@@ -0,0 +1,85 @@
+import 'package:flutter/material.dart';
+
+import '../../../../domain/entities/album.dart';
+import '../common/cached_network_image_with_fallback.dart';
+
+/// Search result card for an album
+class SearchAlbumCard extends StatelessWidget {
+  final Album album;
+  final VoidCallback? onTap;
+
+  const SearchAlbumCard({
+    required this.album,
+    this.onTap,
+    super.key,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return GestureDetector(
+      onTap: onTap,
+      child: Container(
+        decoration: BoxDecoration(
+          color: AppColors.surface,
+          borderRadius: BorderRadius.circular(12),
+          border: Border.all(
+            color: AppColors.rose.withOpacity(0.3),
+          ),
+        ),
+        child: Column(
+          children: [
+            // Album cover or placeholder
+            Expanded(
+              child: ClipRRect(
+                borderRadius: const BorderRadius.vertical(
+                  top: Radius.circular(12),
+                ),
+                child: Container(
+                  width: double.infinity,
+                  decoration: BoxDecoration(
+                    gradient: AppColors.fullGradient,
+                  ),
+                  child: CachedNetworkImageWithFallback(
+                    imageUrl: album.imageUrl,
+                    fallbackIcon: Icons.album,
+                    progressColor: AppColors.rose,
+                  ),
+                ),
+              ),
+            ),
+            // Album info
+            Padding(
+              padding: const EdgeInsets.all(8),
+              child: Column(
+                children: [
+                  Text(
+                    album.title,
+                    style: const TextStyle(
+                      color: AppColors.onSurface,
+                      fontWeight: FontWeight.w500,
+                      fontSize: 14,
+                    ),
+                    maxLines: 1,
+                    overflow: TextOverflow.ellipsis,
+                    textAlign: TextAlign.center,
+                  ),
+                  if (album.artist != null)
+                    Text(
+                      album.artist!.name,
+                      style: const TextStyle(
+                        color: AppColors.muted,
+                        fontSize: 12,
+                      ),
+                      maxLines: 1,
+                      overflow: TextOverflow.ellipsis,
+                      textAlign: TextAlign.center,
+                    ),
+                ],
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

frontend/lib/presentation/widgets/search/search_artist_card.dart

@@ -0,0 +1,70 @@
+import 'package:flutter/material.dart';
+
+import '../../../../domain/entities/artist.dart';
+import '../common/cached_network_image_with_fallback.dart';
+
+/// Search result card for an artist
+class SearchArtistCard extends StatelessWidget {
+  final Artist artist;
+  final VoidCallback? onTap;
+
+  const SearchArtistCard({
+    required this.artist,
+    this.onTap,
+    super.key,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return GestureDetector(
+      onTap: onTap,
+      child: Container(
+        decoration: BoxDecoration(
+          color: AppColors.surface,
+          borderRadius: BorderRadius.circular(12),
+          border: Border.all(
+            color: AppColors.violet.withOpacity(0.3),
+          ),
+        ),
+        child: Column(
+          children: [
+            // Artist image or placeholder
+            Expanded(
+              child: ClipRRect(
+                borderRadius: const BorderRadius.vertical(
+                  top: Radius.circular(12),
+                ),
+                child: Container(
+                  width: double.infinity,
+                  decoration: BoxDecoration(
+                    gradient: AppColors.accentGradient,
+                  ),
+                  child: CachedNetworkImageWithFallback(
+                    imageUrl: artist.imageUrl,
+                    fallbackIcon: Icons.person,
+                    progressColor: AppColors.violet,
+                  ),
+                ),
+              ),
+            ),
+            // Artist name
+            Padding(
+              padding: const EdgeInsets.all(8),
+              child: Text(
+                artist.name,
+                style: const TextStyle(
+                  color: AppColors.onSurface,
+                  fontWeight: FontWeight.w500,
+                  fontSize: 14,
+                ),
+                maxLines: 1,
+                overflow: TextOverflow.ellipsis,
+                textAlign: TextAlign.center,
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

frontend/lib/presentation/widgets/search/search_track_card.dart

@@ -0,0 +1,79 @@
+import 'package:flutter/material.dart';
+
+import '../../../../domain/entities/track.dart';
+import '../../../../core/theme/colors.dart';
+import '../common/cached_network_image_with_fallback.dart';
+
+/// Search result card for a track
+class SearchTrackCard extends StatelessWidget {
+  final Track track;
+  final VoidCallback? onTap;
+
+  const SearchTrackCard({
+    required this.track,
+    this.onTap,
+    super.key,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return GestureDetector(
+      onTap: onTap,
+      child: Container(
+        decoration: BoxDecoration(
+          gradient: AppColors.primaryGradient,
+          borderRadius: BorderRadius.circular(12),
+          border: Border.all(
+            color: AppColors.cyan.withOpacity(0.3),
+          ),
+        ),
+        child: Padding(
+          padding: const EdgeInsets.all(16),
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            mainAxisAlignment: MainAxisAlignment.spaceBetween,
+            children: [
+              // Thumbnail or icon
+              Expanded(
+                child: ClipRRect(
+                  borderRadius: BorderRadius.circular(8),
+                  child: SizedBox(
+                    width: double.infinity,
+                    child: CachedNetworkImageWithFallback(
+                      imageUrl: track.imageUrl,
+                      fallbackIcon: Icons.music_note,
+                      progressColor: AppColors.cyan,
+                      fit: BoxFit.cover,
+                    ),
+                  ),
+                ),
+              ),
+              const SizedBox(height: 12),
+              // Track info
+              Text(
+                track.title,
+                style: const TextStyle(
+                  color: AppColors.onBackground,
+                  fontWeight: FontWeight.w600,
+                  fontSize: 16,
+                ),
+                maxLines: 2,
+                overflow: TextOverflow.ellipsis,
+              ),
+              const SizedBox(height: 4),
+              Text(
+                track.artist?.name ?? 'Unknown Artist',
+                style: const TextStyle(
+                  color: AppColors.onBackground,
+                  fontSize: 14,
+                ),
+                maxLines: 1,
+                overflow: TextOverflow.ellipsis,
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}

frontend/lib/presentation/widgets/search/search_widgets.dart

@@ -0,0 +1,6 @@
+/// Search Widgets Export
+library;
+
+export 'search_track_card.dart';
+export 'search_artist_card.dart';
+export 'search_album_card.dart';

frontend/lib/presentation/widgets/settings/audio_quality_selector.dart

@@ -0,0 +1,247 @@
+/// Audio Quality Selector Widget
+library;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import '../../../core/theme/colors.dart';
+import '../../../core/theme/text_styles.dart';
+import '../../providers/settings_provider.dart';
+
+/// Audio quality selector widget
+class AudioQualitySelector extends ConsumerWidget {
+  const AudioQualitySelector({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final settingsState = ref.watch(settingsProvider);
+    final currentQuality = settingsState.audioQuality;
+
+    return Container(
+      margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+      decoration: BoxDecoration(
+        color: AppColors.surface,
+        borderRadius: BorderRadius.circular(16),
+        border: Border.all(
+          color: AppColors.cyan.withOpacity(0.15),
+          width: 1,
+        ),
+      ),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          // Header
+          Padding(
+            padding: const EdgeInsets.fromLTRB(16, 16, 16, 8),
+            child: Row(
+              children: [
+                Container(
+                  width: 36,
+                  height: 36,
+                  decoration: BoxDecoration(
+                    color: AppColors.cyan.withOpacity(0.1),
+                    borderRadius: BorderRadius.circular(8),
+                  ),
+                  child: const Icon(
+                    Icons.high_quality_outlined,
+                    color: AppColors.cyan,
+                    size: 20,
+                  ),
+                ),
+                const SizedBox(width: 12),
+                Expanded(
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Text(
+                        'Audio Quality',
+                        style: AppTextStyles.body.copyWith(
+                          color: AppColors.onBackground,
+                          fontWeight: FontWeight.w600,
+                        ),
+                      ),
+                      Text(
+                        'Higher quality uses more data',
+                        style: AppTextStyles.bodySmall.copyWith(
+                          color: AppColors.muted,
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+              ],
+            ),
+          ),
+          const Divider(height: 1, color: AppColors.surfaceVariant),
+          // Audio quality options
+          _buildQualityOption(
+            context,
+            ref,
+            AudioQuality.low,
+            'Low',
+            '96 kbps',
+            'Best for data saving',
+            currentQuality,
+          ),
+          _buildQualityOption(
+            context,
+            ref,
+            AudioQuality.medium,
+            'Medium',
+            '160 kbps',
+            'Good balance',
+            currentQuality,
+          ),
+          _buildQualityOption(
+            context,
+            ref,
+            AudioQuality.high,
+            'High',
+            '320 kbps',
+            'Best quality',
+            currentQuality,
+          ),
+          _buildQualityOption(
+            context,
+            ref,
+            AudioQuality.lossless,
+            'Lossless',
+            'FLAC',
+            'Requires Premium',
+            currentQuality,
+            requiresPremium: true,
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildQualityOption(
+    BuildContext context,
+    WidgetRef ref,
+    AudioQuality quality,
+    String title,
+    String bitrate,
+    String description,
+    AudioQuality currentQuality, {
+    bool requiresPremium = false,
+  }) {
+    final isSelected = currentQuality == quality;
+    final settingsState = ref.watch(settingsProvider);
+    final isPremium = settingsState.user?.isPremium ?? false;
+    final isLocked = requiresPremium && !isPremium;
+
+    return InkWell(
+      onTap: isLocked
+          ? null
+          : () => ref.read(settingsProvider.notifier).setAudioQuality(quality),
+      child: Container(
+        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 12),
+        decoration: BoxDecoration(
+          color: isSelected
+              ? AppColors.cyan.withOpacity(0.1)
+              : Colors.transparent,
+          border: Border(
+            left: BorderSide(
+              color: isSelected ? AppColors.cyan : Colors.transparent,
+              width: 3,
+            ),
+          ),
+        ),
+        child: Row(
+          children: [
+            Expanded(
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  Row(
+                    children: [
+                      Text(
+                        title,
+                        style: AppTextStyles.body.copyWith(
+                          color: isLocked
+                              ? AppColors.muted
+                              : AppColors.onBackground,
+                          fontWeight:
+                              isSelected ? FontWeight.w600 : FontWeight.w500,
+                        ),
+                      ),
+                      if (requiresPremium) ...[
+                        const SizedBox(width: 8),
+                        Container(
+                          padding: const EdgeInsets.symmetric(
+                            horizontal: 6,
+                            vertical: 2,
+                          ),
+                          decoration: BoxDecoration(
+                            color: AppColors.violet.withOpacity(0.2),
+                            borderRadius: BorderRadius.circular(4),
+                          ),
+                          child: Text(
+                            'PRO',
+                            style: AppTextStyles.caption.copyWith(
+                              color: AppColors.violet,
+                              fontWeight: FontWeight.w700,
+                              fontSize: 10,
+                            ),
+                          ),
+                        ),
+                      ],
+                    ],
+                  ),
+                  const SizedBox(height: 4),
+                  Row(
+                    children: [
+                      Container(
+                        padding: const EdgeInsets.symmetric(
+                          horizontal: 8,
+                          vertical: 2,
+                        ),
+                        decoration: BoxDecoration(
+                          color: AppColors.surfaceVariant,
+                          borderRadius: BorderRadius.circular(4),
+                        ),
+                        child: Text(
+                          bitrate,
+                          style: AppTextStyles.caption.copyWith(
+                            color: AppColors.onSurfaceVariant,
+                            fontWeight: FontWeight.w500,
+                          ),
+                        ),
+                      ),
+                      const SizedBox(width: 8),
+                      Text(
+                        description,
+                        style: AppTextStyles.bodySmall.copyWith(
+                          color: AppColors.muted,
+                        ),
+                      ),
+                    ],
+                  ),
+                ],
+              ),
+            ),
+            if (isLocked) ...[
+              Icon(
+                Icons.lock_outline,
+                color: AppColors.muted,
+                size: 20,
+              ),
+            ] else if (isSelected) ...[
+              Icon(
+                Icons.check_circle,
+                color: AppColors.cyan,
+                size: 24,
+              ),
+            ] else ...[
+              Icon(
+                Icons.radio_button_unchecked,
+                color: AppColors.muted,
+                size: 24,
+              ),
+            ],
+          ],
+        ),
+      ),
+    );
+  }
+}

frontend/lib/presentation/widgets/settings/cache_management_tile.dart

@@ -0,0 +1,259 @@
+/// Cache Management Tile Widget
+library;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import '../../../core/theme/colors.dart';
+import '../../../core/theme/text_styles.dart';
+import '../../providers/settings_provider.dart';
+
+/// Cache management tile widget
+class CacheManagementTile extends ConsumerWidget {
+  const CacheManagementTile({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final settingsState = ref.watch(settingsProvider);
+    final cacheSize = settingsState.cacheSize;
+    final isLoading = settingsState.isLoading;
+
+    return Container(
+      margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+      decoration: BoxDecoration(
+        color: AppColors.surface,
+        borderRadius: BorderRadius.circular(16),
+        border: Border.all(
+          color: AppColors.cyan.withOpacity(0.15),
+          width: 1,
+        ),
+      ),
+      child: Padding(
+        padding: const EdgeInsets.all(16),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            // Header
+            Row(
+              children: [
+                Container(
+                  width: 36,
+                  height: 36,
+                  decoration: BoxDecoration(
+                    color: AppColors.cyan.withOpacity(0.1),
+                    borderRadius: BorderRadius.circular(8),
+                  ),
+                  child: const Icon(
+                    Icons.storage_outlined,
+                    color: AppColors.cyan,
+                    size: 20,
+                  ),
+                ),
+                const SizedBox(width: 12),
+                Expanded(
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Text(
+                        'Storage',
+                        style: AppTextStyles.body.copyWith(
+                          color: AppColors.onBackground,
+                          fontWeight: FontWeight.w600,
+                        ),
+                      ),
+                      Text(
+                        'Cache and offline data',
+                        style: AppTextStyles.bodySmall.copyWith(
+                          color: AppColors.muted,
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+              ],
+            ),
+            const SizedBox(height: 16),
+            // Cache size display
+            Container(
+              padding: const EdgeInsets.all(16),
+              decoration: BoxDecoration(
+                color: AppColors.surfaceVariant.withOpacity(0.5),
+                borderRadius: BorderRadius.circular(12),
+              ),
+              child: Row(
+                mainAxisAlignment: MainAxisAlignment.spaceBetween,
+                children: [
+                  Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Text(
+                        'Cache Size',
+                        style: AppTextStyles.body.copyWith(
+                          color: AppColors.onSurface,
+                        ),
+                      ),
+                      const SizedBox(height: 4),
+                      Text(
+                        cacheSize,
+                        style: AppTextStyles.h3.copyWith(
+                          color: AppColors.cyan,
+                          fontWeight: FontWeight.w700,
+                        ),
+                      ),
+                    ],
+                  ),
+                  Icon(
+                    Icons.folder_outlined,
+                    color: AppColors.muted,
+                    size: 32,
+                  ),
+                ],
+              ),
+            ),
+            const SizedBox(height: 16),
+            // Clear cache button
+            SizedBox(
+              width: double.infinity,
+              child: OutlinedButton.icon(
+                onPressed: isLoading
+                    ? null
+                    : () => _showClearCacheDialog(context, ref),
+                icon: isLoading
+                    ? const SizedBox(
+                        width: 18,
+                        height: 18,
+                        child: CircularProgressIndicator(
+                          strokeWidth: 2,
+                          valueColor: AlwaysStoppedAnimation<Color>(
+                            AppColors.cyan,
+                          ),
+                        ),
+                      )
+                    : const Icon(Icons.delete_outline, size: 18),
+                label: Text(
+                  isLoading ? 'Clearing...' : 'Clear Cache',
+                  style: AppTextStyles.button,
+                ),
+                style: OutlinedButton.styleFrom(
+                  padding: const EdgeInsets.symmetric(vertical: 14),
+                  side: BorderSide(
+                    color: AppColors.rose.withOpacity(0.5),
+                    width: 1.5,
+                  ),
+                  foregroundColor: AppColors.rose,
+                ),
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  void _showClearCacheDialog(BuildContext context, WidgetRef ref) {
+    showDialog(
+      context: context,
+      builder: (context) => AlertDialog(
+        backgroundColor: AppColors.surface,
+        shape: RoundedRectangleBorder(
+          borderRadius: BorderRadius.circular(16),
+          side: BorderSide(
+            color: AppColors.cyan.withOpacity(0.2),
+            width: 1,
+          ),
+        ),
+        title: Row(
+          children: [
+            Container(
+              width: 36,
+              height: 36,
+              decoration: BoxDecoration(
+                color: AppColors.rose.withOpacity(0.1),
+                borderRadius: BorderRadius.circular(8),
+              ),
+              child: const Icon(
+                Icons.warning_outlined,
+                color: AppColors.rose,
+                size: 20,
+              ),
+            ),
+            const SizedBox(width: 12),
+            Text(
+              'Clear Cache',
+              style: AppTextStyles.h3.copyWith(
+                color: AppColors.onBackground,
+              ),
+            ),
+          ],
+        ),
+        content: Text(
+          'This will delete all cached data. You may need to re-download content for offline use.\n\nContinue?',
+          style: AppTextStyles.body.copyWith(
+            color: AppColors.onSurface,
+          ),
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context),
+            child: Text(
+              'Cancel',
+              style: AppTextStyles.button.copyWith(
+                color: AppColors.muted,
+              ),
+            ),
+          ),
+          ElevatedButton(
+            onPressed: () async {
+              Navigator.pop(context);
+              try {
+                await ref.read(settingsProvider.notifier).clearCache();
+                if (context.mounted) {
+                  ScaffoldMessenger.of(context).showSnackBar(
+                    SnackBar(
+                      content: Text(
+                        'Cache cleared successfully',
+                        style: AppTextStyles.body.copyWith(
+                          color: Colors.white,
+                        ),
+                      ),
+                      backgroundColor: AppColors.vert,
+                      behavior: SnackBarBehavior.floating,
+                      shape: RoundedRectangleBorder(
+                        borderRadius: BorderRadius.circular(10),
+                      ),
+                    ),
+                  );
+                }
+              } catch (e) {
+                if (context.mounted) {
+                  ScaffoldMessenger.of(context).showSnackBar(
+                    SnackBar(
+                      content: Text(
+                        'Failed to clear cache: ${e.toString()}',
+                        style: AppTextStyles.body.copyWith(
+                          color: Colors.white,
+                        ),
+                      ),
+                      backgroundColor: AppColors.error,
+                      behavior: SnackBarBehavior.floating,
+                      shape: RoundedRectangleBorder(
+                        borderRadius: BorderRadius.circular(10),
+                      ),
+                    ),
+                  );
+                }
+              }
+            },
+            style: ElevatedButton.styleFrom(
+              backgroundColor: AppColors.rose,
+              foregroundColor: Colors.white,
+            ),
+            child: Text(
+              'Clear',
+              style: AppTextStyles.button,
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

frontend/lib/presentation/widgets/settings/edit_profile_dialog.dart

@@ -0,0 +1,386 @@
+/// Edit Profile Dialog Widget
+library;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:image_picker/image_picker.dart';
+import '../../../core/theme/colors.dart';
+import '../../../core/theme/text_styles.dart';
+import '../../../domain/entities/user.dart';
+import '../../providers/settings_provider.dart';
+
+/// Edit profile dialog
+class EditProfileDialog extends ConsumerStatefulWidget {
+  const EditProfileDialog({
+    super.key,
+    required this.user,
+  });
+
+  final User user;
+
+  @override
+  ConsumerState<EditProfileDialog> createState() => _EditProfileDialogState();
+}
+
+class _EditProfileDialogState extends ConsumerState<EditProfileDialog> {
+  late final TextEditingController _displayNameController;
+  final ImagePicker _imagePicker = ImagePicker();
+  String? _avatarUrl;
+
+  @override
+  void initState() {
+    super.initState();
+    _displayNameController = TextEditingController(
+      text: widget.user.displayName ?? widget.user.username,
+    );
+    _avatarUrl = widget.user.avatarUrl;
+  }
+
+  @override
+  void dispose() {
+    _displayNameController.dispose();
+    super.dispose();
+  }
+
+  Future<void> _pickImage() async {
+    try {
+      final XFile? image = await _imagePicker.pickImage(
+        source: ImageSource.gallery,
+        maxWidth: 512,
+        maxHeight: 512,
+        imageQuality: 85,
+      );
+
+      if (image != null && mounted) {
+        // For now, just show the selected image
+        // In production, you would upload this to your server
+        setState(() {
+          _avatarUrl = image.path;
+        });
+
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(
+            content: Text(
+              'Image selected. Note: Avatar upload requires server implementation.',
+              style: AppTextStyles.body.copyWith(
+                color: Colors.white,
+              ),
+            ),
+            backgroundColor: AppColors.info,
+            behavior: SnackBarBehavior.floating,
+            duration: const Duration(seconds: 3),
+            shape: RoundedRectangleBorder(
+              borderRadius: BorderRadius.circular(10),
+            ),
+          ),
+        );
+      }
+    } catch (e) {
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(
+            content: Text(
+              'Failed to pick image: ${e.toString()}',
+              style: AppTextStyles.body.copyWith(
+                color: Colors.white,
+              ),
+            ),
+            backgroundColor: AppColors.error,
+            behavior: SnackBarBehavior.floating,
+            shape: RoundedRectangleBorder(
+              borderRadius: BorderRadius.circular(10),
+            ),
+          ),
+        );
+      }
+    }
+  }
+
+  Future<void> _saveProfile() async {
+    final displayName = _displayNameController.text.trim();
+
+    if (displayName.isEmpty) {
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(
+          content: Text(
+            'Display name cannot be empty',
+            style: AppTextStyles.body.copyWith(
+              color: Colors.white,
+            ),
+          ),
+          backgroundColor: AppColors.error,
+          behavior: SnackBarBehavior.floating,
+          shape: RoundedRectangleBorder(
+            borderRadius: BorderRadius.circular(10),
+          ),
+        ),
+      );
+      return;
+    }
+
+    Navigator.pop(context);
+
+    try {
+      await ref.read(settingsProvider.notifier).updateProfile(
+            displayName: displayName,
+            avatarUrl: _avatarUrl,
+          );
+
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(
+            content: Text(
+              'Profile updated successfully',
+              style: AppTextStyles.body.copyWith(
+                color: Colors.white,
+              ),
+            ),
+            backgroundColor: AppColors.vert,
+            behavior: SnackBarBehavior.floating,
+            shape: RoundedRectangleBorder(
+              borderRadius: BorderRadius.circular(10),
+            ),
+          ),
+        );
+      }
+    } catch (e) {
+      if (mounted) {
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(
+            content: Text(
+              'Failed to update profile: ${e.toString()}',
+              style: AppTextStyles.body.copyWith(
+                color: Colors.white,
+              ),
+            ),
+            backgroundColor: AppColors.error,
+            behavior: SnackBarBehavior.floating,
+            shape: RoundedRectangleBorder(
+              borderRadius: BorderRadius.circular(10),
+            ),
+          ),
+        );
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Dialog(
+      backgroundColor: AppColors.surface,
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.circular(20),
+        side: BorderSide(
+          color: AppColors.cyan.withOpacity(0.2),
+          width: 1,
+        ),
+      ),
+      child: Container(
+        constraints: const BoxConstraints(maxWidth: 400),
+        padding: const EdgeInsets.all(24),
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          crossAxisAlignment: CrossAxisAlignment.stretch,
+          children: [
+            // Header
+            Row(
+              children: [
+                Text(
+                  'Edit Profile',
+                  style: AppTextStyles.h3.copyWith(
+                    color: AppColors.onBackground,
+                    fontWeight: FontWeight.w700,
+                  ),
+                ),
+                const Spacer(),
+                IconButton(
+                  onPressed: () => Navigator.pop(context),
+                  icon: const Icon(Icons.close),
+                  color: AppColors.muted,
+                ),
+              ],
+            ),
+            const SizedBox(height: 24),
+            // Avatar
+            Center(
+              child: GestureDetector(
+                onTap: _pickImage,
+                child: Stack(
+                  children: [
+                    Container(
+                      width: 100,
+                      height: 100,
+                      decoration: BoxDecoration(
+                        shape: BoxShape.circle,
+                        gradient: AppColors.primaryGradient,
+                        boxShadow: AppColors.cyanGlow,
+                      ),
+                      child: ClipOval(
+                        child: _avatarUrl != null
+                            // Check if it's a network URL or local file path
+                            ? (_avatarUrl!.startsWith('http')
+                                ? Image.network(
+                                    _avatarUrl!,
+                                    fit: BoxFit.cover,
+                                    errorBuilder:
+                                        (context, error, stackTrace) {
+                                      return _buildDefaultAvatar();
+                                    },
+                                  )
+                                : Image.file(
+                                    // Use File for local path
+                                    // ignore: unnecessary_null_comparison
+                                    _avatarUrl != null
+                                        ? _avatarUrl as Object
+                                        : Object(),
+                                    fit: BoxFit.cover,
+                                    errorBuilder:
+                                        (context, error, stackTrace) {
+                                      return _buildDefaultAvatar();
+                                    },
+                                  ))
+                            : _buildDefaultAvatar(),
+                      ),
+                    ),
+                    Positioned(
+                      bottom: 0,
+                      right: 0,
+                      child: Container(
+                        width: 36,
+                        height: 36,
+                        decoration: BoxDecoration(
+                          color: AppColors.cyan,
+                          shape: BoxShape.circle,
+                          border: Border.all(
+                            color: AppColors.surface,
+                            width: 3,
+                          ),
+                        ),
+                        child: const Icon(
+                          Icons.camera_alt_outlined,
+                          color: AppColors.primary,
+                          size: 18,
+                        ),
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+            ),
+            const SizedBox(height: 16),
+            Center(
+              child: Text(
+                'Tap to change photo',
+                style: AppTextStyles.bodySmall.copyWith(
+                  color: AppColors.cyan,
+                ),
+              ),
+            ),
+            const SizedBox(height: 24),
+            // Display name field
+            Text(
+              'Display Name',
+              style: AppTextStyles.label.copyWith(
+                color: AppColors.onSurface,
+                fontWeight: FontWeight.w600,
+              ),
+            ),
+            const SizedBox(height: 8),
+            TextField(
+              controller: _displayNameController,
+              style: AppTextStyles.body.copyWith(
+                color: AppColors.onBackground,
+              ),
+              decoration: InputDecoration(
+                hintText: 'Enter display name',
+                hintStyle: AppTextStyles.body.copyWith(
+                  color: AppColors.muted,
+                ),
+                filled: true,
+                fillColor: AppColors.surfaceVariant.withOpacity(0.5),
+                border: OutlineInputBorder(
+                  borderRadius: BorderRadius.circular(12),
+                  borderSide: BorderSide(
+                    color: AppColors.cyan.withOpacity(0.2),
+                    width: 2,
+                  ),
+                ),
+                enabledBorder: OutlineInputBorder(
+                  borderRadius: BorderRadius.circular(12),
+                  borderSide: BorderSide(
+                    color: AppColors.cyan.withOpacity(0.2),
+                    width: 2,
+                  ),
+                ),
+                focusedBorder: OutlineInputBorder(
+                  borderRadius: BorderRadius.circular(12),
+                  borderSide: const BorderSide(
+                    color: AppColors.cyan,
+                    width: 2,
+                  ),
+                ),
+              ),
+            ),
+            const SizedBox(height: 24),
+            // Buttons
+            Row(
+              children: [
+                Expanded(
+                  child: OutlinedButton(
+                    onPressed: () => Navigator.pop(context),
+                    style: OutlinedButton.styleFrom(
+                      padding: const EdgeInsets.symmetric(vertical: 14),
+                      side: BorderSide(
+                        color: AppColors.muted.withOpacity(0.5),
+                        width: 1.5,
+                      ),
+                      foregroundColor: AppColors.muted,
+                    ),
+                    child: Text(
+                      'Cancel',
+                      style: AppTextStyles.button,
+                    ),
+                  ),
+                ),
+                const SizedBox(width: 12),
+                Expanded(
+                  child: ElevatedButton(
+                    onPressed: _saveProfile,
+                    style: ElevatedButton.styleFrom(
+                      padding: const EdgeInsets.symmetric(vertical: 14),
+                      backgroundColor: AppColors.cyan,
+                      foregroundColor: AppColors.primary,
+                    ),
+                    child: Text(
+                      'Save',
+                      style: AppTextStyles.button,
+                    ),
+                  ),
+                ),
+              ],
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildDefaultAvatar() {
+    final firstLetter = (widget.user.displayName ?? widget.user.username)
+        .substring(0, 1)
+        .toUpperCase();
+
+    return Container(
+      color: AppColors.surfaceVariant,
+      child: Center(
+        child: Text(
+          firstLetter,
+          style: AppTextStyles.h2.copyWith(
+            color: AppColors.cyan,
+            fontWeight: FontWeight.w700,
+          ),
+        ),
+      ),
+    );
+  }
+}

frontend/lib/presentation/widgets/settings/profile_section.dart

@@ -0,0 +1,192 @@
+/// Profile Section Widget
+library;
+
+import 'package:flutter/material.dart';
+import 'package:flutter_riverpod/flutter_riverpod.dart';
+import '../../../core/theme/colors.dart';
+import '../../../core/theme/text_styles.dart';
+import '../../../domain/entities/user.dart';
+import '../../providers/settings_provider.dart';
+import 'edit_profile_dialog.dart';
+
+/// Profile section widget
+class ProfileSection extends ConsumerWidget {
+  const ProfileSection({super.key});
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    final settingsState = ref.watch(settingsProvider);
+    final user = settingsState.user;
+
+    if (user == null) {
+      return const SizedBox.shrink();
+    }
+
+    return Container(
+      margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+      decoration: BoxDecoration(
+        gradient: LinearGradient(
+          begin: Alignment.topLeft,
+          end: Alignment.bottomRight,
+          colors: [
+            AppColors.surface,
+            AppColors.surfaceVariant,
+          ],
+        ),
+        borderRadius: BorderRadius.circular(20),
+        border: Border.all(
+          color: AppColors.cyan.withOpacity(0.2),
+          width: 1,
+        ),
+        boxShadow: [
+          BoxShadow(
+            color: AppColors.cyan.withOpacity(0.1),
+            blurRadius: 20,
+            offset: const Offset(0, 8),
+          ),
+        ],
+      ),
+      child: Padding(
+        padding: const EdgeInsets.all(20),
+        child: Column(
+          children: [
+            // Avatar and name
+            Row(
+              children: [
+                // Avatar
+                Container(
+                  width: 80,
+                  height: 80,
+                  decoration: BoxDecoration(
+                    shape: BoxShape.circle,
+                    gradient: AppColors.primaryGradient,
+                    boxShadow: AppColors.cyanGlow,
+                  ),
+                  child: ClipOval(
+                    child: user.avatarUrl != null
+                        ? Image.network(
+                            user.avatarUrl!,
+                            fit: BoxFit.cover,
+                            errorBuilder: (context, error, stackTrace) {
+                              return _buildDefaultAvatar(user);
+                            },
+                          )
+                        : _buildDefaultAvatar(user),
+                  ),
+                ),
+                const SizedBox(width: 20),
+                // Name and email
+                Expanded(
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      Row(
+                        children: [
+                          Flexible(
+                            child: Text(
+                              user.displayName ?? user.username,
+                              style: AppTextStyles.h3.copyWith(
+                                color: AppColors.onBackground,
+                                fontWeight: FontWeight.w600,
+                              ),
+                              overflow: TextOverflow.ellipsis,
+                            ),
+                          ),
+                          if (user.isPremium) ...[
+                            const SizedBox(width: 8),
+                            Container(
+                              padding: const EdgeInsets.symmetric(
+                                horizontal: 8,
+                                vertical: 4,
+                              ),
+                              decoration: BoxDecoration(
+                                gradient: AppColors.accentGradient,
+                                borderRadius: BorderRadius.circular(12),
+                                boxShadow: [
+                                  BoxShadow(
+                                    color: AppColors.violet.withOpacity(0.3),
+                                    blurRadius: 8,
+                                  ),
+                                ],
+                              ),
+                              child: Text(
+                                'PREMIUM',
+                                style: AppTextStyles.caption.copyWith(
+                                  color: Colors.white,
+                                  fontWeight: FontWeight.w700,
+                                  letterSpacing: 1,
+                                ),
+                              ),
+                            ),
+                          ],
+                        ],
+                      ),
+                      const SizedBox(height: 6),
+                      Text(
+                        user.email,
+                        style: AppTextStyles.body.copyWith(
+                          color: AppColors.muted,
+                        ),
+                      ),
+                      const SizedBox(height: 6),
+                      Text(
+                        '@${user.username}',
+                        style: AppTextStyles.bodySmall.copyWith(
+                          color: AppColors.onSurfaceVariant,
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+              ],
+            ),
+            const SizedBox(height: 20),
+            // Edit Profile Button
+            SizedBox(
+              width: double.infinity,
+              child: ElevatedButton.icon(
+                onPressed: () => _showEditProfileDialog(context, ref, user),
+                icon: const Icon(Icons.edit_outlined, size: 18),
+                label: const Text('Edit Profile'),
+                style: ElevatedButton.styleFrom(
+                  padding: const EdgeInsets.symmetric(vertical: 14),
+                  backgroundColor: AppColors.cyan.withOpacity(0.15),
+                  foregroundColor: AppColors.cyan,
+                  elevation: 0,
+                  side: BorderSide(
+                    color: AppColors.cyan.withOpacity(0.3),
+                    width: 1,
+                  ),
+                ),
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildDefaultAvatar(User user) {
+    return Container(
+      color: AppColors.surfaceVariant,
+      child: Center(
+        child: Text(
+          (user.displayName ?? user.username)
+              .substring(0, 1)
+              .toUpperCase(),
+          style: AppTextStyles.h2.copyWith(
+            color: AppColors.cyan,
+            fontWeight: FontWeight.w700,
+          ),
+        ),
+      ),
+    );
+  }
+
+  void _showEditProfileDialog(BuildContext context, WidgetRef ref, User user) {
+    showDialog(
+      context: context,
+      builder: (context) => EditProfileDialog(user: user),
+    );
+  }
+}

frontend/lib/presentation/widgets/settings/settings_tile.dart

@@ -0,0 +1,195 @@
+/// Settings Tile - Reusable settings item widget
+library;
+
+import 'package:flutter/material.dart';
+import '../../../core/theme/colors.dart';
+import '../../../core/theme/text_styles.dart';
+
+/// Reusable settings tile widget
+class SettingsTile extends StatelessWidget {
+  const SettingsTile({
+    super.key,
+    required this.title,
+    this.subtitle,
+    this.leading,
+    this.trailing,
+    this.onTap,
+    this.isEnabled = true,
+  });
+
+  final String title;
+  final String? subtitle;
+  final Widget? leading;
+  final Widget? trailing;
+  final VoidCallback? onTap;
+  final bool isEnabled;
+
+  @override
+  Widget build(BuildContext context) {
+    return Opacity(
+      opacity: isEnabled ? 1.0 : 0.5,
+      child: InkWell(
+        onTap: isEnabled ? onTap : null,
+        borderRadius: BorderRadius.circular(12),
+        child: Padding(
+          padding: const EdgeInsets.symmetric(
+            horizontal: 16,
+            vertical: 12,
+          ),
+          child: Row(
+            children: [
+              if (leading != null) ...[
+                Container(
+                  width: 40,
+                  height: 40,
+                  decoration: BoxDecoration(
+                    color: AppColors.cyan.withOpacity(0.1),
+                    borderRadius: BorderRadius.circular(10),
+                  ),
+                  child: IconTheme(
+                    data: IconThemeData(
+                      color: AppColors.cyan,
+                      size: 20,
+                    ),
+                    child: leading!,
+                  ),
+                ),
+                const SizedBox(width: 16),
+              ],
+              Expanded(
+                child: Column(
+                  crossAxisAlignment: CrossAxisAlignment.start,
+                  children: [
+                    Text(
+                      title,
+                      style: AppTextStyles.body.copyWith(
+                        color: AppColors.onBackground,
+                        fontWeight: FontWeight.w500,
+                      ),
+                    ),
+                    if (subtitle != null) ...[
+                      const SizedBox(height: 4),
+                      Text(
+                        subtitle!,
+                        style: AppTextStyles.bodySmall.copyWith(
+                          color: AppColors.muted,
+                        ),
+                      ),
+                    ],
+                  ],
+                ),
+              ),
+              if (trailing != null) trailing!,
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+/// Settings tile with toggle switch
+class SettingsToggleTile extends StatelessWidget {
+  const SettingsToggleTile({
+    super.key,
+    required this.title,
+    this.subtitle,
+    this.leading,
+    required this.value,
+    required this.onChanged,
+    this.isEnabled = true,
+  });
+
+  final String title;
+  final String? subtitle;
+  final Widget? leading;
+  final bool value;
+  final ValueChanged<bool>? onChanged;
+  final bool isEnabled;
+
+  @override
+  Widget build(BuildContext context) {
+    return SettingsTile(
+      title: title,
+      subtitle: subtitle,
+      leading: leading,
+      isEnabled: isEnabled,
+      trailing: Switch(
+        value: value,
+        onChanged: isEnabled ? onChanged : null,
+        activeColor: AppColors.cyan,
+        activeTrackColor: AppColors.cyan.withOpacity(0.3),
+        inactiveTrackColor: AppColors.surfaceVariant,
+        inactiveThumbColor: AppColors.muted,
+      ),
+    );
+  }
+}
+
+/// Settings section header
+class SettingsSectionHeader extends StatelessWidget {
+  const SettingsSectionHeader({
+    super.key,
+    required this.title,
+    this.padding = const EdgeInsets.fromLTRB(16, 24, 16, 8),
+  });
+
+  final String title;
+  final EdgeInsetsGeometry padding;
+
+  @override
+  Widget build(BuildContext context) {
+    return Padding(
+      padding: padding,
+      child: Text(
+        title.toUpperCase(),
+        style: AppTextStyles.label.copyWith(
+          color: AppColors.cyan,
+          fontWeight: FontWeight.w600,
+          letterSpacing: 1.2,
+        ),
+      ),
+    );
+  }
+}
+
+/// Settings card container
+class SettingsCard extends StatelessWidget {
+  const SettingsCard({
+    super.key,
+    required this.children,
+    this.padding = const EdgeInsets.all(8),
+  });
+
+  final List<Widget> children;
+  final EdgeInsetsGeometry padding;
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
+      decoration: BoxDecoration(
+        color: AppColors.surface,
+        borderRadius: BorderRadius.circular(16),
+        border: Border.all(
+          color: AppColors.cyan.withOpacity(0.15),
+          width: 1,
+        ),
+        boxShadow: [
+          BoxShadow(
+            color: AppColors.cyan.withOpacity(0.05),
+            blurRadius: 10,
+            offset: const Offset(0, 4),
+          ),
+        ],
+      ),
+      child: Padding(
+        padding: padding,
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: children,
+        ),
+      ),
+    );
+  }
+}

frontend/lib/presentation/widgets/settings/settings_widgets.dart

@@ -0,0 +1,8 @@
+/// Settings Widgets Export
+library;
+
+export 'profile_section.dart';
+export 'audio_quality_selector.dart';
+export 'cache_management_tile.dart';
+export 'settings_tile.dart';
+export 'edit_profile_dialog.dart';