# RAPPORT D'ANALYSE — TALAS/VEZA DESIGN SYSTEM v3

**Date de génération** : 2025-01-27  
**Version** : 1.0.0  
**Analyste** : AI Technical Analyst  
**Objectif** : Inventaire exhaustif pour création Design System v3

---

## 1. RÉSUMÉ EXÉCUTIF

### 1.1 Vue d'Ensemble

**Total Features Identifiées** : **600 features**  
**Fichiers ORIGIN_ Analysés** : **22 fichiers**  
**Modules Fonctionnels** : **24 modules**  
**Composants UI Estimés** : **250+ composants**  
**Complexité Design System** : **Très Élevée** (niveau entre Spotify et Discord)

### 1.2 Répartition par Catégorie

| Catégorie | Features | % Total | Priorité Moyenne |
|-----------|----------|---------|------------------|
| 🎵 **Audio & Streaming** | 45 | 7.5% | P1 |
| 💬 **Communication & Chat** | 35 | 5.8% | P2 |
| 🛒 **Marketplace** | 50 | 8.3% | P3 |
| 👥 **Social & Communauté** | 40 | 6.7% | P2 |
| 📚 **Éducation & Ressources** | 30 | 5.0% | P3 |
| 🔐 **Auth & Sécurité** | 30 | 5.0% | P0 |
| ⚙️ **Settings & Admin** | 25 | 4.2% | P2 |
| 🎨 **Création & Édition** | 15 | 2.5% | P4 |
| 📁 **Gestion de Fichiers** | 40 | 6.7% | P1 |
| 👤 **Profils & Utilisateurs** | 35 | 5.8% | P1 |
| 🔍 **Recherche & Découverte** | 30 | 5.0% | P2 |
| 📊 **Analytics & Statistiques** | 30 | 5.0% | P5 |
| ☁️ **Cloud & Stockage** | 20 | 3.3% | P4 |
| 🧰 **Gestion de Matériel** | 25 | 4.2% | P4 |
| 🎮 **Gamification** | 15 | 2.5% | P4 |
| 📧 **Notifications** | 20 | 3.3% | P2 |
| 🔒 **Sécurité Avancée** | 15 | 2.5% | P3 |
| 🛠️ **Développeurs & API** | 15 | 2.5% | P6 |
| 🚀 **Livestreaming** | 10 | 1.7% | P4 |
| 🤝 **Collaboration Temps Réel** | 10 | 1.7% | P4 |
| ⛓️ **Blockchain & Web3** | 10 | 1.7% | P8 |
| 🔌 **Intégrations Externes** | 20 | 3.3% | P5 |
| 📱 **Applications Natives** | 15 | 2.5% | P3 |
| **Autres** | 35 | 5.8% | P3-P8 |

### 1.3 Complexité Estimée du Design System

**Niveau de Complexité** : ⭐⭐⭐⭐⭐ (5/5)

**Justification** :
- **600 features** à supporter
- **24 domaines fonctionnels** distincts
- **Multi-plateformes** : Web, Mobile, Desktop
- **Multi-rôles** : Guest, User, Creator, Premium, Moderator, Admin
- **Multi-contextes** : Audio, Chat, Marketplace, Social, Education
- **Temps réel** : WebSocket, streaming, collaboration
- **Accessibilité** : WCAG AAA requis
- **Internationalisation** : Multi-langues

**Comparaison** :
- **Spotify** : ~200 features → Design System complexe
- **Discord** : ~150 features → Design System très complexe
- **Veza** : **600 features** → Design System **ultra-complexe**

---

## 2. FICHIERS ORIGIN_ ANALYSÉS

### 2.1 Inventaire Complet

| Fichier | Domaine Principal | Lignes | Composants UI Mentionnés | États Identifiés |
|---------|------------------|--------|--------------------------|------------------|
| `ORIGIN_UI_UX_SYSTEM.md` | UI/UX Global | 1006 | 200+ composants | loading, error, success, empty, disabled, hover, focus, active |
| `ORIGIN_FEATURES_REGISTRY.md` | Features (600) | 1426 | Implicites | Tous les états par feature |
| `ORIGIN_MASTER_ARCHITECTURE.md` | Architecture | 2105 | Structure frontend | - |
| `ORIGIN_API_SPECIFICATION.md` | API REST/WebSocket | 2093 | Endpoints → UI | - |
| `ORIGIN_BUSINESS_LOGIC.md` | Règles métier | 1157 | Workflows → UI | pending, paid, processing, completed, cancelled, refunded |
| `ORIGIN_CODE_STANDARDS.md` | Standards code | 1887 | Patterns React/TS | - |
| `ORIGIN_DATABASE_SCHEMA.md` | Base de données | 2500+ | Entités → UI | - |
| `ORIGIN_TECHNICAL_STACK.md` | Stack technique | 1600+ | Technologies frontend | - |
| `ORIGIN_SECURITY_FRAMEWORK.md` | Sécurité | - | Auth UI | - |
| `ORIGIN_ERROR_PATTERNS.md` | Gestion erreurs | - | Error states | error, warning, info |
| `ORIGIN_ERROR_PREVENTION_GUIDE.md` | Prévention erreurs | - | Validation UI | invalid, valid, pending |
| `ORIGIN_ERROR_REGISTRY.md` | Registre erreurs | - | Error messages | - |
| `ORIGIN_ERROR_RESOLUTION_STRATEGY.md` | Résolution erreurs | - | Recovery UI | - |
| `ORIGIN_QUALITY_METRICS.md` | Métriques qualité | - | Performance UI | - |
| `ORIGIN_PERFORMANCE_TARGETS.md` | Performance | - | Loading states | - |
| `ORIGIN_TESTING_STRATEGY.md` | Tests | - | Test components | - |
| `ORIGIN_DEPLOYMENT_GUIDE.md` | Déploiement | - | - | - |
| `ORIGIN_DEVELOPMENT_PHASES.md` | Phases dev | - | Roadmap UI | - |
| `ORIGIN_FEATURE_VALIDATION_STRATEGY.md` | Validation features | - | Validation UI | - |
| `ORIGIN_IMPLEMENTATION_TASKS.md` | Tâches implémentation | - | - | - |
| `ORIGIN_IMPLEMENTATION_TASKS_ARCHIVE.md` | Archive tâches | - | - | - |

### 2.2 Analyse Détaillée des Fichiers Clés

#### 2.2.1 ORIGIN_UI_UX_SYSTEM.md

**Domaine** : Design System complet

**Conventions Définies** :
- **Design Tokens** : Couleurs (primary, neutral, semantic), Spacing (4px base), Typography (Inter, JetBrains Mono), Shadows, Border Radius
- **Component Library** : 200+ composants documentés
- **Accessibility** : WCAG AAA (contrast ≥ 7:1, keyboard nav, screen readers)
- **Responsive** : Mobile-first (640px, 768px, 1024px, 1280px, 1536px)
- **Dark Mode** : Support natif obligatoire
- **Animations** : 60 FPS, GPU-accelerated (transform, opacity)

**Composants Identifiés** :
- Buttons (Primary, Secondary, Ghost, Danger; Small, Medium, Large)
- Inputs (Text, Email, Password, Search, File, Range)
- Cards (Product, User, Track, Project)
- Modals/Dialogs (5 tailles)
- Audio Player (mini, full, embedded)
- Waveform Visualizer
- Progress Bars
- Loaders/Spinners
- Empty States
- Error States

**États UI** :
- Default, Hover, Active, Disabled, Loading
- Focus (keyboard navigation)
- Error, Success, Warning, Info
- Empty (no data states)

#### 2.2.2 ORIGIN_FEATURES_REGISTRY.md

**Domaine** : Registre exhaustif des 600 features

**Structure** :
- ID unique : F001-F600
- Module : 24 modules (M01-M24)
- Priorité : P0 (Critical) à P4 (Optional)
- Complexité : 1/5 (Trivial) à 5/5 (Très Complexe)
- Temps estimé : 2h à 60h par feature

**Composants UI Implicites** :
Chaque feature nécessite des composants UI spécifiques selon son domaine :
- Auth features → Login/Register forms, 2FA modals
- Streaming features → Audio player, waveform, controls
- Chat features → Message bubbles, chat input, presence indicators
- Marketplace features → Product cards, cart, checkout flow
- Social features → Profile cards, feed, follow buttons

#### 2.2.3 ORIGIN_BUSINESS_LOGIC.md

**Domaine** : Règles métier et workflows

**Workflows Identifiés** :
1. **User Onboarding** : Registration → Email Verification → Profile Setup → Role Selection → First Interaction
2. **Track Upload** : File Selection → Upload → Metadata → Preview → Publish → Processing
3. **Purchase** : Browse → View Details → Add to Cart → Checkout → Payment → Download
4. **Subscription** : View Plans → Select Plan → Payment → Activation

**State Machines** :
- **Order States** : pending → paid → processing → completed (ou cancelled/refunded)
- **Moderation States** : submitted → pending → approved/rejected → flagged → banned
- **User Account States** : registered → verified → active → inactive/suspended/banned → deleted

**Composants UI Nécessaires** :
- Progress indicators (multi-step forms)
- Status badges (order status, moderation status)
- State transition animations
- Confirmation modals
- Success/Error notifications

#### 2.2.4 ORIGIN_API_SPECIFICATION.md

**Domaine** : API REST, WebSocket, gRPC

**Endpoints → UI Mapping** :
- `POST /auth/login` → LoginForm component
- `GET /tracks` → TrackList component
- `POST /tracks` → TrackUploadForm component
- `GET /playlists` → PlaylistGrid component
- `GET /rooms` → ChatRoomList component
- `POST /orders` → CheckoutForm component

**WebSocket Events → UI Updates** :
- `message` → MessageBubble component
- `user_joined` → PresenceIndicator component
- `typing` → TypingIndicator component
- `presence` → OnlineStatusBadge component

---

## 3. INVENTAIRE COMPLET DES FEATURES (600+)

### 3.1 🎵 AUDIO & STREAMING (45 features)

| ID | Feature | Description | Composants UI | États | Priorité |
|----|---------|-------------|---------------|-------|----------|
| F106 | Play/Pause | Contrôle lecture audio | PlayPauseButton, AudioPlayer | playing, paused, loading | P0 |
| F107 | Next/Previous Track | Navigation entre tracks | NextPreviousButtons | enabled, disabled | P0 |
| F108 | Seek Bar | Navigation temporelle | ProgressBar, SeekBar | dragging, seeking | P0 |
| F109 | Volume Control | Contrôle volume | VolumeControl, VolumeSlider | muted, unmuted, 0-100% | P0 |
| F110 | Shuffle Mode | Lecture aléatoire | ShuffleButton | active, inactive | P1 |
| F111 | Repeat Mode | Répétition track/playlist | RepeatButton | off, track, playlist | P1 |
| F112 | Playback Speed | Vitesse lecture (0.5x-2x) | PlaybackSpeedControl, SpeedSelector | 0.5x, 1x, 1.5x, 2x | P2 |
| F113 | Crossfade | Transition entre tracks | AudioPlayer (advanced) | enabled, disabled | P3 |
| F114 | Gapless Playback | Lecture sans interruption | AudioPlayer (internal) | - | P2 |
| F115 | Waveform Visualizer | Visualisation waveform | WaveformViewer, WaveformCanvas | loading, ready, error | P1 |
| F116 | Spectrogram | Visualisation spectrale | SpectrogramViewer | loading, ready | P3 |
| F117 | Equalizer Bars | Visualiseur égaliseur | EqualizerBars, FrequencyBars | active, inactive | P3 |
| F118 | Mini Player | Player compact | MiniPlayer | collapsed, expanded | P1 |
| F119 | Picture-in-Picture | Mode PiP | AudioPlayer (PiP mode) | pip, fullscreen | P3 |
| F120 | Keyboard Shortcuts | Raccourcis clavier | AudioPlayer (keyboard handlers) | - | P2 |
| F121 | Media Session API | Contrôles OS | AudioPlayer (MediaSession) | - | P2 |
| F122 | Chromecast Support | Streaming Chromecast | ChromecastButton, CastDialog | available, unavailable, casting | P3 |
| F123 | AirPlay Support | Streaming AirPlay | AirPlayButton | available, unavailable, casting | P3 |
| F124 | Queue Management | Gestion file d'attente | QueuePanel, QueueList | empty, has-items | P1 |
| F125 | Add to Queue | Ajouter à la queue | AddToQueueButton, QueueMenu | - | P1 |
| F126 | Remove from Queue | Retirer de la queue | QueueItemActions | - | P1 |
| F127 | Reorder Queue | Réorganiser queue | QueueList (drag-drop) | dragging | P2 |
| F128 | Save Queue as Playlist | Sauvegarder queue | SaveQueueButton, SaveQueueModal | - | P2 |
| F129 | Clear Queue | Vider queue | ClearQueueButton, ConfirmDialog | - | P1 |
| F130 | Playback History | Historique écoute | HistoryList, HistoryItem | empty, has-items | P2 |
| F131 | Resume Playback | Reprendre où arrêté | ResumeButton | - | P2 |
| F132 | Collaborative Queue | Queue partagée | QueuePanel (collaborative) | - | P3 |
| F133 | Autoplay | Recommandations auto | AutoplayToggle | enabled, disabled | P2 |
| F134 | Create Playlist | Créer playlist | CreatePlaylistButton, CreatePlaylistModal | - | P0 |
| F135 | Edit Playlist | Éditer playlist | EditPlaylistButton, EditPlaylistModal | - | P1 |
| F136 | Delete Playlist | Supprimer playlist | DeletePlaylistButton, ConfirmDialog | - | P1 |
| F137 | Add Tracks to Playlist | Ajouter tracks | AddToPlaylistButton, PlaylistSelector | - | P1 |
| F138 | Remove Tracks from Playlist | Retirer tracks | PlaylistTrackActions | - | P1 |
| F139 | Reorder Playlist | Réorganiser playlist | PlaylistTrackList (drag-drop) | dragging | P2 |
| F140 | Playlist Visibility | Public/Private | VisibilityToggle, VisibilitySelector | public, private, unlisted | P1 |
| F141 | Collaborative Playlist | Playlist collaborative | PlaylistSettings (collaborative) | - | P2 |
| F142 | Playlist Cover | Cover personnalisée | PlaylistCoverUpload, ImageUploader | - | P2 |
| F143 | Playlist Description | Description playlist | PlaylistDescriptionEditor | - | P1 |
| F144 | Share Playlist | Partager playlist | ShareButton, ShareModal | - | P1 |
| F145 | Duplicate Playlist | Dupliquer playlist | DuplicatePlaylistButton | - | P2 |
| F146 | Merge Playlists | Fusionner playlists | MergePlaylistsButton, MergePlaylistsModal | - | P2 |
| F147 | Export Playlist | Exporter (M3U) | ExportPlaylistButton, ExportFormatSelector | - | P3 |
| F148 | Smart Playlists | Playlists intelligentes | SmartPlaylistEditor, RuleBuilder | - | P3 |
| F149 | Playlist Analytics | Stats playlist | PlaylistAnalyticsPanel | - | P4 |

**Composants UI Spécialisés Audio Identifiés** :
- `AudioPlayer` (full, mini, embedded variants)
- `WaveformViewer` (interactive, static)
- `SpectrogramViewer`
- `EqualizerBars`
- `VolumeControl` (slider, button, mute toggle)
- `ProgressBar` (seekable, non-seekable)
- `PlaybackSpeedControl`
- `QueuePanel` (list, drag-drop)
- `PlaylistEditor` (tracks management)
- `BPMDisplay` (metadata)
- `KeyDisplay` (musical key)
- `PeakMeters` (audio levels)

### 3.2 💬 COMMUNICATION & CHAT (35 features)

| ID | Feature | Description | Composants UI | États | Priorité |
|----|---------|-------------|---------------|-------|----------|
| F151 | Direct Messages 1-to-1 | Messages directs | ChatWindow, MessageList | empty, has-messages | P0 |
| F152 | Public Rooms | Salons publics | RoomList, RoomCard | - | P1 |
| F153 | Private Rooms | Salons privés | RoomList, RoomCard, InviteButton | - | P1 |
| F154 | Group Messages | Messages groupe | ChatWindow (group mode) | - | P1 |
| F155 | Text Messages | Messages texte | MessageBubble, ChatInput | sending, sent, failed | P0 |
| F156 | Emoji Support | Support emojis | EmojiPicker, EmojiButton | - | P1 |
| F157 | Message Reactions | Réactions emoji | ReactionPicker, ReactionList | - | P2 |
| F158 | Edit Messages | Éditer messages | MessageEditor, EditButton | editing | P2 |
| F159 | Delete Messages | Supprimer messages | DeleteMessageButton, ConfirmDialog | - | P2 |
| F160 | Message Threads | Threads/Réponses | ThreadView, ReplyButton | collapsed, expanded | P2 |
| F161 | Mentions (@username) | Mentions utilisateurs | MentionAutocomplete, MentionBadge | - | P2 |
| F162 | Markdown Support | Formatage markdown | MessageRenderer (markdown) | - | P2 |
| F163 | Image Messages | Envoi images | ImageUploader, ImageMessage | uploading, uploaded | P2 |
| F164 | GIF Support | Support GIFs | GiphyPicker, GIFMessage | - | P2 |
| F165 | Audio Track Sharing | Partage tracks | TrackShareButton, TrackPreview | - | P2 |
| F166 | Message Search | Recherche messages | SearchInput, SearchResults | empty, has-results | P2 |
| F167 | Search Filters | Filtres recherche | FilterPanel, DateRangePicker | - | P2 |
| F168 | Pin Messages | Épingler messages | PinButton, PinnedMessagesList | - | P2 |
| F169 | Bookmark Messages | Favoris messages | BookmarkButton, BookmarksList | - | P3 |
| F170 | Real-time Notifications | Notifications temps réel | NotificationBadge, NotificationCenter | unread, read | P1 |
| F171 | Push Notifications | Notifications push | PushNotificationSettings | enabled, disabled | P2 |
| F172 | Custom Notification Sound | Son personnalisé | SoundSelector | - | P3 |
| F173 | Unread Badge | Badge non lus | UnreadBadge | 0, 1-9, 10+ | P1 |
| F174 | Typing Indicator | Indicateur "écriture" | TypingIndicator | typing, idle | P1 |
| F175 | Read Receipts | Accusés de lecture | ReadReceiptIndicator | read, unread | P2 |
| F176 | Online Status | Statut en ligne | OnlineStatusBadge | online, offline, away | P1 |
| F177 | Custom Status | Statut personnalisé | StatusEditor, StatusDisplay | - | P2 |
| F178 | Auto Status (AFK) | Statut automatique | StatusManager (auto) | - | P2 |
| F179 | Last Seen | Dernière activité | LastSeenDisplay | - | P2 |
| F180 | Online Users List | Liste utilisateurs en ligne | OnlineUsersList | empty, has-users | P2 |
| F181 | Invisible Mode | Mode invisible | InvisibleModeToggle | - | P3 |
| F182 | Presence Notifications | Notifications présence | PresenceNotificationSettings | - | P3 |
| F183 | Now Playing Status | Statut "écoute" | NowPlayingStatus, TrackDisplay | - | P2 |
| F184 | Rich Presence | Présence riche (Discord-like) | RichPresenceDisplay | - | P3 |
| F185 | End-to-End Encryption | Chiffrement E2E | EncryptionIndicator | encrypted, unencrypted | P4 |

**Composants UI Spécialisés Chat Identifiés** :
- `ChatWindow` (1-to-1, group, room variants)
- `MessageBubble` (sent, received, system, edited, deleted)
- `ChatInput` (text, emoji, file, audio)
- `MessageList` (virtualized, infinite scroll)
- `EmojiPicker` (grid, search)
- `ReactionPicker` (quick reactions)
- `ReactionList` (display reactions)
- `ThreadView` (nested messages)
- `MentionAutocomplete` (user search)
- `TypingIndicator` (animated dots)
- `OnlineStatusBadge` (green dot, away, offline)
- `PresenceIndicator` (user list with status)
- `ReadReceiptIndicator` (checkmarks)
- `RoomList` (sidebar, grid)
- `RoomCard` (preview, unread count)
- `NotificationCenter` (dropdown, sidebar)
- `UnreadBadge` (number badge)

### 3.3 🛒 MARKETPLACE (50 features)

| ID | Feature | Description | Composants UI | États | Priorité |
|----|---------|-------------|---------------|-------|----------|
| F226 | Create Product | Créer produit | CreateProductButton, CreateProductModal | - | P0 |
| F227 | Edit Product | Éditer produit | EditProductButton, EditProductModal | - | P1 |
| F228 | Delete Product | Supprimer produit | DeleteProductButton, ConfirmDialog | - | P1 |
| F229 | Upload Product Files | Upload fichiers | FileUploader, MultiFileUploader | uploading, uploaded, error | P0 |
| F230 | Upload Preview Files | Upload previews | PreviewUploader | - | P1 |
| F231 | Product Images | Images produit | ImageGallery, ImageUploader | - | P1 |
| F232 | Product Description | Description riche | RichTextEditor | - | P1 |
| F233 | Fixed Price | Prix fixe | PriceInput, PriceDisplay | - | P0 |
| F234 | Pay What You Want | Prix variable | PWYWPriceSelector | min, suggested, custom | P2 |
| F235 | Free with Donation | Gratuit + don | DonationButton, DonationModal | - | P2 |
| F236 | Product Categories | Catégories | CategorySelector, CategoryBadge | - | P1 |
| F237 | Product Tags | Tags produits | TagInput, TagList | - | P1 |
| F238 | BPM/Key Metadata | Métadonnées audio | MetadataDisplay, MetadataEditor | - | P1 |
| F239 | Genre Selection | Sélection genre | GenreSelector | - | P1 |
| F240 | File Formats | Formats fichiers | FormatBadge, FormatList | - | P1 |
| F241 | License Types | Types de licence | LicenseSelector, LicenseInfo | - | P1 |
| F242 | Personal License | Licence personnelle | LicenseCard | - | P1 |
| F243 | Commercial License | Licence commerciale | LicenseCard | - | P1 |
| F244 | Exclusive License | Licence exclusive | LicenseCard | - | P2 |
| F245 | Lease License | Licence lease | LicenseCard | - | P2 |
| F246 | Unlimited License | Licence illimitée | LicenseCard | - | P2 |
| F247 | License Terms | Conditions licence | LicenseTermsDisplay, LicenseTermsEditor | - | P1 |
| F248 | Auto Contract | Contrat auto | ContractGenerator, ContractViewer | - | P2 |
| F249 | E-Signature | Signature électronique | SignaturePad, SignatureViewer | - | P3 |
| F250 | License History | Historique licences | LicenseHistoryList | empty, has-licenses | P2 |
| F251 | Add to Cart | Ajouter au panier | AddToCartButton | added, adding | P0 |
| F252 | Shopping Cart | Panier | CartPanel, CartItemList | empty, has-items | P0 |
| F253 | Wishlist | Liste de souhaits | WishlistButton, WishlistPanel | - | P2 |
| F254 | Tax Calculation | Calcul taxes | TaxDisplay, TaxCalculator | - | P1 |
| F255 | Discount Codes | Codes promo | DiscountCodeInput, DiscountCodeDisplay | valid, invalid, applied | P1 |
| F256 | Stripe Checkout | Checkout Stripe | CheckoutButton, StripeCheckoutModal | - | P0 |
| F257 | Card Payment | Paiement carte | CardPaymentForm | processing, success, error | P0 |
| F258 | PayPal Payment | Paiement PayPal | PayPalButton | - | P1 |
| F259 | Crypto Payment | Paiement crypto | CryptoPaymentButton, CryptoWalletSelector | - | P4 |
| F260 | Invoice Generation | Génération facture | InvoiceViewer, InvoiceDownload | - | P1 |
| F261 | Purchase History | Historique achats | PurchaseHistoryList | empty, has-purchases | P1 |
| F262 | Re-download | Re-téléchargement | ReDownloadButton | - | P1 |
| F263 | Refund Request | Demande remboursement | RefundRequestButton, RefundRequestModal | - | P2 |
| F264 | Dispute | Dispute/réclamation | DisputeButton, DisputeForm | - | P2 |
| F265 | Support SAV | Support client | SupportButton, SupportChat | - | P2 |
| F266 | Seller Dashboard | Dashboard vendeur | SellerDashboard, StatsCards | - | P1 |
| F267 | Sales Statistics | Stats ventes | SalesChart, SalesTable | - | P1 |
| F268 | Real-time Revenue | Revenus temps réel | RevenueDisplay, RevenueChart | - | P2 |
| F269 | Sales Trends | Tendances ventes | TrendChart | - | P2 |
| F270 | Top Products | Meilleurs produits | TopProductsList | - | P1 |
| F271 | Conversion Rate | Taux conversion | ConversionRateDisplay | - | P2 |
| F272 | Product Reviews | Avis produits | ReviewList, ReviewCard | empty, has-reviews | P1 |
| F273 | Reply to Reviews | Répondre avis | ReplyToReviewButton, ReplyForm | - | P1 |
| F274 | Promotions | Promotions | PromotionBanner, PromotionBadge | active, expired | P2 |
| F275 | Payout Management | Gestion paiements | PayoutSettings, PayoutHistory | - | P2 |

**Composants UI Spécialisés Marketplace Identifiés** :
- `ProductCard` (grid, list, featured variants)
- `PriceDisplay` (fixed, PWYW, free)
- `LicenseSelector` (radio group, comparison table)
- `CartPanel` (sidebar, modal, page)
- `CartItemList` (items, summary, actions)
- `CheckoutFlow` (multi-step: cart → shipping → payment → review → confirmation)
- `PaymentForm` (Stripe, PayPal, Crypto)
- `InvoiceViewer` (PDF preview, download)
- `RatingStars` (display, input)
- `ReviewCard` (review, reply, helpful)
- `SalesChart` (line, bar, pie)
- `RevenueDisplay` (amount, trend, period)
- `PayoutSettings` (method, schedule, minimum)

### 3.4 👥 SOCIAL & COMMUNAUTÉ (40 features)

| ID | Feature | Description | Composants UI | États | Priorité |
|----|---------|-------------|---------------|-------|----------|
| F186 | Follow User | Suivre utilisateur | FollowButton | following, not-following | P0 |
| F187 | Unfollow User | Ne plus suivre | UnfollowButton | - | P0 |
| F188 | Followers List | Liste followers | FollowersList, UserCard | empty, has-followers | P1 |
| F189 | Following List | Liste following | FollowingList, UserCard | empty, has-following | P1 |
| F190 | Block User | Bloquer utilisateur | BlockButton, BlockConfirmDialog | - | P1 |
| F191 | Report User | Signaler utilisateur | ReportButton, ReportForm | - | P1 |
| F192 | Profile Recommendations | Recommandations | RecommendedUsersList, UserCard | - | P2 |
| F193 | Follow Suggestions | Suggestions suivi | FollowSuggestionsPanel | - | P2 |
| F194 | Collaboration Request | Demande collaboration | CollaborationRequestButton, RequestModal | - | P2 |
| F195 | Invite Friends | Inviter amis | InviteFriendsButton, InviteModal | - | P2 |
| F196 | Share Profile | Partager profil | ShareProfileButton, ShareModal | - | P1 |
| F197 | Profile QR Code | QR code profil | QRCodeGenerator, QRCodeDisplay | - | P2 |
| F198 | New Follower Notification | Notification nouveau follower | NotificationCard | - | P1 |
| F199 | Close Friends List | Liste amis proches | CloseFriendsList, CloseFriendsSelector | - | P3 |
| F200 | Artist Subscription | Abonnement artiste | SubscribeButton, SubscriptionSettings | - | P2 |
| F201 | Create Text Post | Créer post texte | CreatePostButton, PostEditor | - | P1 |
| F202 | Create Image Post | Créer post image | ImagePostEditor, ImageUploader | - | P1 |
| F203 | Create Audio Post | Créer post audio | AudioPostEditor, AudioUploader | - | P1 |
| F204 | Create Video Post | Créer post vidéo | VideoPostEditor, VideoUploader | - | P2 |
| F205 | Like Post | Liker post | LikeButton, LikeCount | liked, not-liked | P0 |
| F206 | Comment Post | Commenter post | CommentButton, CommentForm, CommentList | - | P0 |
| F207 | Share Post | Partager post | SharePostButton, ShareModal | - | P1 |
| F208 | Quote Post | Citer post | QuotePostButton, QuotePostEditor | - | P2 |
| F209 | Pin Post | Épingler post | PinPostButton | pinned, not-pinned | P2 |
| F210 | Delete Post | Supprimer post | DeletePostButton, ConfirmDialog | - | P1 |
| F211 | Edit Post | Éditer post | EditPostButton, PostEditor | editing | P1 |
| F212 | Private Post | Post privé | PostVisibilityToggle | public, private, followers-only | P1 |
| F213 | Hashtags | Hashtags dans posts | HashtagInput, HashtagBadge | - | P1 |
| F214 | Trending Hashtags | Hashtags tendance | TrendingHashtagsList, HashtagCard | - | P2 |
| F215 | Explore Page | Page découverte | ExplorePage, FeedGrid | - | P1 |
| F216 | Create Group | Créer groupe | CreateGroupButton, CreateGroupModal | - | P2 |
| F217 | Join Public Group | Rejoindre groupe public | JoinGroupButton | - | P2 |
| F218 | Request Private Group | Demander accès groupe | RequestAccessButton, RequestModal | - | P2 |
| F219 | Leave Group | Quitter groupe | LeaveGroupButton, ConfirmDialog | - | P2 |
| F220 | Invite to Group | Inviter membres | InviteToGroupButton, InviteModal | - | P2 |
| F221 | Group Roles | Rôles dans groupes | RoleSelector, RoleBadge | member, moderator, admin | P2 |
| F222 | Group Forum | Forum groupe | ForumThreadList, ForumThread | - | P3 |
| F223 | Group Events | Événements groupe | EventCard, EventList | - | P3 |
| F224 | Group Files | Fichiers partagés | GroupFilesList, FileUploader | - | P3 |
| F225 | Group Statistics | Stats groupe | GroupStatsPanel | - | P3 |

**Composants UI Spécialisés Social Identifiés** :
- `UserCard` (profile preview, follow button)
- `FollowButton` (follow, unfollow, pending)
- `ProfileHeader` (avatar, banner, bio, stats)
- `PostCard` (text, image, audio, video variants)
- `PostEditor` (rich text, media upload)
- `CommentList` (nested, paginated)
- `CommentForm` (reply, edit)
- `LikeButton` (heart, count)
- `ShareButton` (modal, copy link)
- `HashtagBadge` (clickable, trending)
- `FeedGrid` (masonry, grid, list)
- `TrendingHashtagsList` (sidebar, top bar)
- `GroupCard` (preview, member count)
- `GroupHeader` (banner, description, members)
- `EventCard` (date, location, RSVP)

### 3.5 🔐 AUTH & SÉCURITÉ (30 features)

| ID | Feature | Description | Composants UI | États | Priorité |
|----|---------|-------------|---------------|-------|----------|
| F001 | Email/Password Registration | Inscription email | RegisterForm, EmailInput, PasswordInput | valid, invalid, submitting | P0 |
| F002 | Email Verification | Vérification email | VerifyEmailPage, ResendEmailButton | verified, pending, expired | P1 |
| F003 | Email/Password Login | Connexion email | LoginForm, EmailInput, PasswordInput | valid, invalid, submitting | P0 |
| F004 | OAuth Google | Connexion Google | GoogleLoginButton | - | P1 |
| F005 | OAuth GitHub | Connexion GitHub | GitHubLoginButton | - | P1 |
| F006 | OAuth Discord | Connexion Discord | DiscordLoginButton | - | P2 |
| F007 | OAuth Spotify | Connexion Spotify | SpotifyLoginButton | - | P2 |
| F008 | Remember Me | Session persistante | RememberMeCheckbox | - | P1 |
| F009 | Logout | Déconnexion | LogoutButton, LogoutConfirmDialog | - | P0 |
| F010 | Logout All Devices | Déconnexion globale | LogoutAllButton, LogoutAllConfirmDialog | - | P2 |
| F011 | Password Reset Request | Demande reset | ForgotPasswordForm | - | P1 |
| F012 | Password Reset Confirm | Confirmation reset | ResetPasswordForm, TokenInput | valid, invalid, expired | P1 |
| F013 | Change Password | Changer mot de passe | ChangePasswordForm, OldPasswordInput | - | P1 |
| F014 | Password History | Historique mots de passe | PasswordHistorySettings | - | P2 |
| F015 | Password Strength | Indicateur force | PasswordStrengthIndicator | weak, medium, strong, very-strong | P1 |
| F016 | 2FA TOTP Setup | Configuration 2FA | TwoFactorSetupModal, QRCodeDisplay | - | P1 |
| F017 | 2FA TOTP Verify | Vérification 2FA | TwoFactorVerifyInput | - | P1 |
| F018 | 2FA Backup Codes | Codes de backup | BackupCodesDisplay, BackupCodesDownload | - | P1 |
| F019 | 2FA SMS | 2FA par SMS | SMS2FASetup, SMS2FAVerify | - | P3 |
| F020 | Passkeys/WebAuthn | Support passkeys | PasskeyButton, PasskeySetup | - | P2 |
| F021 | Session Management | Gestion sessions | SessionList, SessionCard, RevokeSessionButton | - | P2 |
| F022 | Login Notification | Notification connexion | LoginNotificationCard | - | P2 |
| F023 | Geolocation Connections | Géolocalisation | ConnectionMap, ConnectionList | - | P3 |
| F024 | Login History | Historique connexions | LoginHistoryList, LoginHistoryTable | empty, has-history | P2 |
| F025 | IP Whitelisting | Liste blanche IP | IPWhitelistEditor, IPWhitelistList | - | P4 |
| F026 | Rate Limiting | Limitation débit | RateLimitIndicator | - | P1 |
| F027 | CAPTCHA | CAPTCHA anti-bot | CaptchaWidget | - | P2 |
| F028 | Bruteforce Detection | Détection bruteforce | SecurityAlert, AccountLockedMessage | - | P1 |
| F029 | Account Lockout | Blocage compte | AccountLockedPage | locked, unlocked | P1 |
| F030 | Security Questions | Questions sécurité | SecurityQuestionsSetup, SecurityQuestionsVerify | - | P4 |

**Composants UI Spécialisés Auth Identifiés** :
- `LoginForm` (email, password, OAuth buttons)
- `RegisterForm` (multi-step, validation)
- `PasswordInput` (show/hide, strength indicator)
- `TwoFactorSetupModal` (QR code, manual entry)
- `TwoFactorVerifyInput` (6-digit code)
- `SessionList` (active sessions, device info)
- `SecuritySettings` (2FA, sessions, password)
- `OAuthButton` (Google, GitHub, Discord, Spotify)
- `PasswordStrengthIndicator` (progress bar, criteria list)
- `BackupCodesDisplay` (grid, download)

### 3.6 ⚙️ SETTINGS & ADMIN (25 features)

| ID | Feature | Description | Composants UI | États | Priorité |
|----|---------|-------------|---------------|-------|----------|
| F411 | User List | Liste utilisateurs | UserList, UserTable, UserFilters | empty, has-users | P0 |
| F412 | User Search | Recherche utilisateurs | UserSearchInput, SearchResults | - | P0 |
| F413 | Advanced Filters | Filtres avancés | FilterPanel, FilterChips | - | P1 |
| F414 | Edit User Profile | Éditer profil utilisateur | EditUserModal, UserForm | - | P0 |
| F415 | Ban User | Bannir utilisateur | BanUserButton, BanUserModal | - | P0 |
| F416 | Suspend User | Suspendre utilisateur | SuspendUserButton, SuspendUserModal | - | P0 |
| F417 | Reset User Password | Reset password admin | ResetPasswordButton, ResetPasswordModal | - | P1 |
| F418 | Change User Role | Changer rôle | RoleSelector, ChangeRoleModal | - | P0 |
| F419 | Admin Action History | Historique actions | ActionHistoryTable | empty, has-actions | P1 |
| F420 | Internal Notes | Notes internes | NotesEditor, NotesDisplay | - | P1 |
| F421 | Report Queue | Queue signalements | ReportQueueList, ReportCard | empty, has-reports | P0 |
| F422 | Content Moderation | Modération contenu | ModerationPanel, ContentCard | pending, approved, rejected | P0 |
| F423 | Delete Content | Supprimer contenu | DeleteContentButton, ConfirmDialog | - | P0 |
| F424 | Approve Release | Valider release | ApproveReleaseButton | - | P1 |
| F425 | Block Content | Blocage contenu | BlockContentButton | - | P0 |
| F426 | Copyright Strike | Copyright strike | CopyrightStrikeButton, StrikeForm | - | P1 |
| F427 | Appeal System | Système d'appel | AppealForm, AppealList | - | P2 |
| F428 | Moderation Templates | Templates modération | TemplateSelector, TemplateEditor | - | P2 |
| F429 | Task Assignment | Attribution tâches | AssignTaskButton, TaskAssignmentModal | - | P2 |
| F430 | Moderation Statistics | Stats modération | ModerationStatsPanel | - | P2 |
| F431 | General Settings | Paramètres généraux | GeneralSettingsForm | - | P0 |
| F432 | Upload/Storage Limits | Limites upload | LimitsSettings, LimitsDisplay | - | P1 |
| F433 | Feature Flags | Feature flags | FeatureFlagsPanel, FeatureFlagToggle | - | P1 |
| F434 | Maintenance Mode | Mode maintenance | MaintenanceModeToggle, MaintenanceBanner | - | P1 |
| F435 | Global Announcements | Annonces globales | AnnouncementEditor, AnnouncementBanner | - | P1 |

**Composants UI Spécialisés Admin Identifiés** :
- `AdminDashboard` (stats, quick actions)
- `UserTable` (sortable, filterable, paginated)
- `ModerationPanel` (queue, actions, history)
- `ReportCard` (details, actions, timeline)
- `ContentCard` (preview, metadata, actions)
- `FeatureFlagsPanel` (toggle switches, groups)
- `SettingsForm` (sections, save/cancel)
- `ActionHistoryTable` (timeline, filters)
- `StatsPanel` (cards, charts)

### 3.7 📚 ÉDUCATION & RESSOURCES (30 features)

| ID | Feature | Description | Composants UI | États | Priorité |
|----|---------|-------------|---------------|-------|----------|
| F276 | Course List | Liste cours | CourseList, CourseCard | empty, has-courses | P1 |
| F277 | Course Search | Recherche cours | CourseSearchInput, SearchFilters | - | P1 |
| F278 | Course Filters | Filtres cours | FilterPanel (level, duration, genre) | - | P1 |
| F279 | Course Categories | Catégories cours | CategorySelector, CategoryBadge | - | P1 |
| F280 | Video Course | Cours vidéo | VideoPlayer | - | P1 |
| F281 | Text Course | Cours texte | TextCourseViewer, ArticleViewer | - | P1 |
| F282 | Audio Course | Cours audio | AudioCoursePlayer | - | P2 |
| F283 | Practical Projects | Projets pratiques | ProjectCard, ProjectList | - | P2 |
| F284 | Quizzes | Quiz/évaluations | QuizCard, QuizQuestion, QuizResults | - | P2 |
| F285 | Completion Certificates | Certificats | CertificateViewer, CertificateDownload | - | P2 |
| F286 | Course Prerequisites | Prérequis | PrerequisitesList, PrerequisiteBadge | - | P2 |
| F287 | Learning Paths | Parcours apprentissage | LearningPathCard, LearningPathViewer | - | P2 |
| F288 | Free Courses | Cours gratuits | FreeCourseBadge | - | P1 |
| F289 | Paid Courses | Cours payants | PriceDisplay, PurchaseButton | - | P1 |
| F290 | Monthly Subscription | Abonnement mensuel | SubscriptionCard, SubscribeButton | - | P2 |
| F291 | Course Progress | Progression cours | ProgressBar, ProgressCard | 0-100% | P1 |
| F292 | Global Progress | Progression globale | ProgressDashboard | - | P1 |
| F293 | Skill Badges | Badges compétences | BadgeCard, BadgeList | earned, not-earned | P2 |
| F294 | Course Chapters | Chapitres/modules | ChapterList, ChapterCard | completed, in-progress, locked | P1 |
| F295 | Mark Complete | Marquer complété | CompleteButton, CompletionCheckbox | - | P1 |
| F296 | Personal Notes | Notes personnelles | NotesEditor, NotesDisplay | - | P2 |
| F297 | Video Bookmarks | Signets vidéo | BookmarkButton, BookmarksList | - | P2 |
| F298 | Learning History | Historique apprentissage | LearningHistoryList | empty, has-history | P2 |
| F299 | Time Spent | Temps passé | TimeSpentDisplay, TimeChart | - | P2 |
| F300 | Engagement Statistics | Stats engagement | EngagementChart | - | P3 |
| F301 | Instructor Role | Rôle formateur | InstructorDashboard | - | P2 |
| F302 | Course Upload | Upload cours | CourseUploadForm, FileUploader | uploading, uploaded | P2 |
| F303 | Course Series | Séries cours | SeriesCard, SeriesList | - | P2 |
| F304 | Instructor Dashboard | Dashboard formateur | InstructorDashboard, StatsCards | - | P2 |
| F305 | Course Monetization | Monétisation cours | MonetizationSettings, RevenueDisplay | - | P2 |

**Composants UI Spécialisés Éducation Identifiés** :
- `CourseCard` (preview, progress, price)
- `VideoPlayer` (controls, bookmarks, notes)
- `QuizQuestion` (multiple choice, text, code)
- `QuizResults` (score, answers, retake)
- `ProgressBar` (course, chapter, overall)
- `CertificateViewer` (PDF preview, download)
- `LearningPathViewer` (timeline, prerequisites)
- `ChapterList` (expandable, progress indicators)
- `NotesEditor` (rich text, timestamps)
- `BookmarksList` (video timestamps, jump)

### 3.8 Autres Catégories (Résumé)

**📁 Gestion de Fichiers (40 features)** :
- `FileUploader` (drag-drop, progress, multi-file)
- `FileList` (grid, list, filters)
- `FilePreview` (image, audio, video, document)
- `MetadataEditor` (form, auto-fill)
- `FileActions` (download, delete, share)

**👤 Profils & Utilisateurs (35 features)** :
- `ProfileHeader` (avatar, banner, bio)
- `ProfileSettings` (sections, tabs)
- `AvatarUploader` (crop, preview)
- `BannerUploader` (crop, preview)
- `SocialLinksEditor` (add, remove, reorder)

**🔍 Recherche & Découverte (30 features)** :
- `SearchInput` (autocomplete, suggestions)
- `SearchResults` (tabs, filters, sort)
- `SearchFilters` (genre, BPM, date, price)
- `RecommendationCarousel` (horizontal scroll)

**📊 Analytics & Statistiques (30 features)** :
- `AnalyticsDashboard` (cards, charts)
- `Chart` (line, bar, pie, area)
- `StatsCard` (number, trend, period)
- `DateRangePicker` (calendar, presets)

**☁️ Cloud & Stockage (20 features)** :
- `CloudSyncStatus` (syncing, synced, error)
- `BackupSettings` (schedule, retention)
- `StorageQuota` (usage, limit, warning)

**🧰 Gestion de Matériel (25 features)** :
- `EquipmentCard` (photo, details, warranty)
- `EquipmentForm` (add, edit)
- `WarrantyTracker` (expiry, notifications)

**🎮 Gamification (15 features)** :
- `XPBar` (current, next level)
- `AchievementBadge` (earned, locked)
- `Leaderboard` (global, category)
- `QuestCard` (progress, rewards)

**📧 Notifications (20 features)** :
- `NotificationCenter` (dropdown, sidebar)
- `NotificationCard` (type, action, dismiss)
- `NotificationSettings` (categories, quiet hours)

---

## 4. COMPOSANTS UI REQUIS

### 4.1 Composants de Base (Foundation)

#### 4.1.1 Buttons

**Variants** :
- `ButtonPrimary` : Actions principales (bleu #0ea5e9)
- `ButtonSecondary` : Actions secondaires (gris)
- `ButtonGhost` : Actions discrètes (transparent)
- `ButtonDanger` : Actions destructives (rouge)
- `ButtonLink` : Liens stylisés (texte)
- `ButtonIcon` : Boutons icône uniquement

**Sizes** :
- `sm` : 32px height (mobile, compact)
- `md` : 40px height (default)
- `lg` : 48px height (CTA importantes)
- `xl` : 56px height (hero sections)

**States** :
- `default` : État normal
- `hover` : Survol (échelle 1.02, shadow)
- `active` : Clic (échelle 0.98)
- `disabled` : Désactivé (opacity 0.5, cursor not-allowed)
- `loading` : Chargement (spinner, texte masqué)

**Usage** :
- Toutes les actions utilisateur
- Navigation (si styled as button)
- Form submissions
- Modal actions

**Estimation** : Utilisé dans **~400 features**

#### 4.1.2 Inputs

**Types** :
- `TextInput` : Texte simple
- `EmailInput` : Email (validation)
- `PasswordInput` : Mot de passe (show/hide, strength)
- `SearchInput` : Recherche (autocomplete, clear)
- `NumberInput` : Nombres (steppers, min/max)
- `DateInput` : Dates (date picker)
- `TimeInput` : Heures (time picker)
- `FileInput` : Fichiers (drag-drop, preview)
- `Textarea` : Texte multiligne
- `Select` : Sélection (dropdown, multi-select)
- `Checkbox` : Cases à cocher
- `Radio` : Boutons radio
- `Switch` : Interrupteurs (toggle)
- `RangeSlider` : Curseur (volume, prix, etc.)

**States** :
- `default` : Normal
- `focus` : Focus (ring bleu)
- `error` : Erreur (border rouge, message)
- `success` : Succès (border vert, checkmark)
- `disabled` : Désactivé
- `loading` : Chargement (spinner)

**Features** :
- Validation en temps réel
- Messages d'erreur
- Helper text
- Icons (prefix, suffix)
- Clear button

**Estimation** : Utilisé dans **~350 features**

#### 4.1.3 Cards

**Variants** :
- `Card` : Carte générique
- `TrackCard` : Carte track (cover, title, artist, play button)
- `UserCard` : Carte utilisateur (avatar, name, follow button)
- `ProductCard` : Carte produit (image, title, price, add to cart)
- `PlaylistCard` : Carte playlist (cover, title, track count)
- `CourseCard` : Carte cours (thumbnail, title, progress, price)
- `PostCard` : Carte post (content, author, interactions)
- `MessageCard` : Carte message (bubble, timestamp, actions)
- `NotificationCard` : Carte notification (icon, message, action)

**Sizes** :
- `sm` : Compact (list view)
- `md` : Default (grid view)
- `lg` : Large (featured)

**States** :
- `default` : Normal
- `hover` : Survol (shadow, scale)
- `selected` : Sélectionné (border, background)
- `loading` : Chargement (skeleton)

**Estimation** : Utilisé dans **~200 features**

#### 4.1.4 Modals/Dialogs

**Sizes** :
- `sm` : 400px (confirmations)
- `md` : 600px (default)
- `lg` : 800px (forms)
- `xl` : 1000px (editors)
- `fullscreen` : 100vw/100vh (mobile)

**Types** :
- `Modal` : Modal standard (overlay, close button)
- `Dialog` : Dialog (accessible, focus trap)
- `Drawer` : Tiroir (mobile, slide from side)
- `Popover` : Popover (positioned, no overlay)
- `Tooltip` : Tooltip (hover, info)

**States** :
- `open` : Ouvert (fade in, slide up)
- `closing` : Fermeture (fade out, slide down)
- `loading` : Chargement (spinner, disabled actions)

**Estimation** : Utilisé dans **~150 features**

#### 4.1.5 Navigation

**Components** :
- `NavBar` : Barre navigation principale
- `Sidebar` : Barre latérale (collapsible)
- `Tabs` : Onglets (horizontal, vertical)
- `Breadcrumbs` : Fil d'Ariane
- `Pagination` : Pagination (cursor, offset)
- `Menu` : Menu dropdown (context menu)
- `MobileNav` : Navigation mobile (bottom bar)

**Estimation** : Utilisé dans **~100 features**

#### 4.1.6 Tables/Lists

**Components** :
- `Table` : Tableau (sortable, filterable, selectable)
- `List` : Liste (virtualized, infinite scroll)
- `Grid` : Grille (masonry, uniform)
- `TreeView` : Arborescence (expandable)

**Estimation** : Utilisé dans **~80 features**

#### 4.1.7 Feedback

**Components** :
- `Toast` : Notification toast (success, error, info, warning)
- `Alert` : Alerte inline (banner, dismissible)
- `ProgressBar` : Barre progression (linear, circular)
- `Spinner` : Spinner chargement (sizes, colors)
- `Skeleton` : Skeleton loader (text, image, card)

**Estimation** : Utilisé dans **~120 features**

#### 4.1.8 Autres Base

**Components** :
- `Avatar` : Avatar (image, initials, status indicator)
- `Badge` : Badge (count, status, category)
- `Tag` : Tag (removable, clickable)
- `Tooltip` : Tooltip (hover, info)
- `Popover` : Popover (positioned content)
- `Dropdown` : Dropdown (menu, select)
- `Divider` : Séparateur (horizontal, vertical)
- `EmptyState` : État vide (icon, message, action)

**Estimation** : Utilisé dans **~100 features**

### 4.2 Composants Spécialisés Audio

#### 4.2.1 Audio Player

**Variants** :
- `AudioPlayerFull` : Player complet (cover, waveform, controls, metadata)
- `AudioPlayerMini` : Player compact (cover, controls, progress)
- `AudioPlayerEmbedded` : Player intégré (dans card, post)

**Components** :
- `PlayPauseButton` : Bouton play/pause
- `NextPreviousButtons` : Boutons next/previous
- `ProgressBar` : Barre progression (seekable)
- `TimeDisplay` : Affichage temps (current, total)
- `VolumeControl` : Contrôle volume (slider, mute)
- `ShuffleButton` : Bouton shuffle
- `RepeatButton` : Bouton repeat (off, track, playlist)
- `PlaybackSpeedControl` : Contrôle vitesse
- `QualitySelector` : Sélecteur qualité (128k, 256k, 320k, lossless)

**Estimation** : Utilisé dans **~45 features audio**

#### 4.2.2 Waveform & Visualization

**Components** :
- `WaveformViewer` : Visualiseur waveform (interactive, static)
- `WaveformCanvas` : Canvas waveform (WebGL, Canvas 2D)
- `SpectrogramViewer` : Visualiseur spectrogramme
- `EqualizerBars` : Barres égaliseur (frequency bars)
- `PeakMeters` : VU meters (left, right channels)

**Estimation** : Utilisé dans **~15 features**

#### 4.2.3 Queue & Playlist Management

**Components** :
- `QueuePanel` : Panneau queue (sidebar, modal)
- `QueueList` : Liste queue (drag-drop, reorder)
- `QueueItem` : Item queue (track info, actions)
- `PlaylistEditor` : Éditeur playlist (tracks, reorder, metadata)
- `PlaylistTrackList` : Liste tracks playlist (drag-drop)

**Estimation** : Utilisé dans **~30 features**

### 4.3 Composants Spécialisés Chat

#### 4.3.1 Chat Interface

**Components** :
- `ChatWindow` : Fenêtre chat (1-to-1, group, room)
- `MessageList` : Liste messages (virtualized, infinite scroll)
- `MessageBubble` : Bulle message (sent, received, system, edited, deleted)
- `ChatInput` : Input chat (text, emoji, file, audio)
- `MessageActions` : Actions message (reply, edit, delete, react)

**Estimation** : Utilisé dans **~35 features chat**

#### 4.3.2 Chat Features

**Components** :
- `EmojiPicker` : Sélecteur emoji (grid, search, categories)
- `ReactionPicker` : Sélecteur réactions (quick reactions)
- `ReactionList` : Liste réactions (users, count)
- `ThreadView` : Vue thread (nested messages)
- `MentionAutocomplete` : Autocomplete mentions (user search)
- `TypingIndicator` : Indicateur écriture (animated dots)
- `OnlineStatusBadge` : Badge statut (green dot, away, offline)
- `PresenceIndicator` : Indicateur présence (user list)
- `ReadReceiptIndicator` : Indicateur lecture (checkmarks)

**Estimation** : Utilisé dans **~25 features**

#### 4.3.3 Rooms & Channels

**Components** :
- `RoomList` : Liste salons (sidebar, grid)
- `RoomCard` : Carte salon (preview, unread count)
- `ChannelList` : Liste canaux (nested, unread)
- `RoomHeader` : En-tête salon (name, members, actions)

**Estimation** : Utilisé dans **~15 features**

### 4.4 Composants Spécialisés Marketplace

#### 4.4.1 Products

**Components** :
- `ProductCard` : Carte produit (image, title, price, rating)
- `ProductGrid` : Grille produits (responsive, filters)
- `ProductDetails` : Détails produit (gallery, description, reviews)
- `PriceDisplay` : Affichage prix (fixed, PWYW, free)
- `LicenseSelector` : Sélecteur licence (radio, comparison)
- `LicenseInfo` : Info licence (terms, usage rights)

**Estimation** : Utilisé dans **~50 features marketplace**

#### 4.4.2 Cart & Checkout

**Components** :
- `CartPanel` : Panneau panier (sidebar, modal, page)
- `CartItemList` : Liste items panier
- `CartItem` : Item panier (product, quantity, remove)
- `CartSummary` : Résumé panier (subtotal, tax, total)
- `CheckoutFlow` : Flow checkout (multi-step)
  - Step 1: Cart Review
  - Step 2: Shipping/Billing
  - Step 3: Payment
  - Step 4: Review
  - Step 5: Confirmation
- `PaymentForm` : Formulaire paiement (Stripe, PayPal, Crypto)
- `InvoiceViewer` : Visualiseur facture (PDF preview, download)

**Estimation** : Utilisé dans **~30 features**

#### 4.4.3 Reviews & Ratings

**Components** :
- `RatingStars` : Étoiles notation (display, input)
- `ReviewCard` : Carte avis (rating, text, author, helpful)
- `ReviewList` : Liste avis (paginated, sortable)
- `ReviewForm` : Formulaire avis (rating, text, photos)

**Estimation** : Utilisé dans **~10 features**

### 4.5 Composants Spécialisés Social

#### 4.5.1 Profiles

**Components** :
- `ProfileHeader` : En-tête profil (avatar, banner, bio, stats)
- `ProfileTabs` : Onglets profil (tracks, playlists, about)
- `UserCard` : Carte utilisateur (avatar, name, follow button)
- `FollowButton` : Bouton follow (follow, unfollow, pending)
- `FollowersList` : Liste followers (paginated)
- `FollowingList` : Liste following (paginated)

**Estimation** : Utilisé dans **~40 features social**

#### 4.5.2 Posts & Feed

**Components** :
- `PostCard` : Carte post (text, image, audio, video)
- `PostEditor` : Éditeur post (rich text, media upload)
- `FeedGrid` : Grille feed (masonry, grid, list)
- `CommentList` : Liste commentaires (nested, paginated)
- `CommentForm` : Formulaire commentaire (reply, edit)
- `LikeButton` : Bouton like (heart, count)
- `ShareButton` : Bouton partage (modal, copy link)
- `HashtagBadge` : Badge hashtag (clickable, trending)

**Estimation** : Utilisé dans **~30 features**

### 4.6 Composants Spécialisés Analytics

**Components** :
- `AnalyticsDashboard` : Dashboard analytics (cards, charts)
- `StatsCard` : Carte stats (number, trend, period)
- `Chart` : Graphique (line, bar, pie, area)
  - `LineChart` : Courbe (time series)
  - `BarChart` : Barres (comparison)
  - `PieChart` : Secteurs (distribution)
  - `AreaChart` : Aire (cumulative)
- `DateRangePicker` : Sélecteur période (calendar, presets)
- `MetricCard` : Carte métrique (value, change, sparkline)

**Estimation** : Utilisé dans **~30 features analytics**

### 4.7 Composants Spécialisés Admin

**Components** :
- `AdminDashboard` : Dashboard admin (stats, quick actions)
- `UserTable` : Tableau utilisateurs (sortable, filterable, paginated)
- `ModerationPanel` : Panneau modération (queue, actions, history)
- `ReportCard` : Carte signalement (details, actions, timeline)
- `ContentCard` : Carte contenu (preview, metadata, actions)
- `FeatureFlagsPanel` : Panneau feature flags (toggle switches, groups)
- `SettingsForm` : Formulaire paramètres (sections, save/cancel)
- `ActionHistoryTable` : Tableau historique (timeline, filters)

**Estimation** : Utilisé dans **~25 features admin**

### 4.8 Composants Spécialisés Éducation

**Components** :
- `CourseCard` : Carte cours (preview, progress, price)
- `VideoPlayer` : Lecteur vidéo (controls, bookmarks, notes)
- `QuizQuestion` : Question quiz (multiple choice, text, code)
- `QuizResults` : Résultats quiz (score, answers, retake)
- `ProgressBar` : Barre progression (course, chapter, overall)
- `CertificateViewer` : Visualiseur certificat (PDF preview, download)
- `LearningPathViewer` : Visualiseur parcours (timeline, prerequisites)
- `ChapterList` : Liste chapitres (expandable, progress indicators)
- `NotesEditor` : Éditeur notes (rich text, timestamps)
- `BookmarksList` : Liste signets (video timestamps, jump)

**Estimation** : Utilisé dans **~30 features éducation**

### 4.9 Composants Spécialisés Gamification

**Components** :
- `XPBar` : Barre XP (current, next level, progress)
- `AchievementBadge` : Badge achievement (earned, locked, rarity)
- `Leaderboard` : Classement (global, category, period)
- `QuestCard` : Carte quête (progress, rewards, deadline)
- `StatsPanel` : Panneau stats (XP, level, achievements)

**Estimation** : Utilisé dans **~15 features gamification**

### 4.10 Résumé Composants UI

**Total Composants Estimés** : **~250 composants**

**Répartition** :
- Composants de base : ~80 composants
- Composants spécialisés audio : ~20 composants
- Composants spécialisés chat : ~15 composants
- Composants spécialisés marketplace : ~25 composants
- Composants spécialisés social : ~20 composants
- Composants spécialisés analytics : ~15 composants
- Composants spécialisés admin : ~15 composants
- Composants spécialisés éducation : ~15 composants
- Composants spécialisés gamification : ~10 composants
- Autres : ~35 composants

---

## 5. DESIGN TOKENS IDENTIFIÉS

### 5.1 Couleurs

#### 5.1.1 Palette Principale (d'après ORIGIN_UI_UX_SYSTEM.md)

**Primary Colors** (Brand - Bleu) :
```css
--color-primary-50: #f0f9ff;
--color-primary-100: #e0f2fe;
--color-primary-200: #bae6fd;
--color-primary-300: #7dd3fc;
--color-primary-400: #38bdf8;
--color-primary-500: #0ea5e9;  /* Main brand color */
--color-primary-600: #0284c7;
--color-primary-700: #0369a1;
--color-primary-800: #075985;
--color-primary-900: #0c4a6e;
--color-primary-950: #082f49;
```

**Neutral Colors** (Gris) :
```css
--color-gray-50: #f9fafb;
--color-gray-100: #f3f4f6;
--color-gray-200: #e5e7eb;
--color-gray-300: #d1d5db;
--color-gray-400: #9ca3af;
--color-gray-500: #6b7280;
--color-gray-600: #4b5563;
--color-gray-700: #374151;
--color-gray-800: #1f2937;
--color-gray-900: #111827;
--color-gray-950: #030712;
```

**Semantic Colors** :
```css
--color-success-500: #10b981;  /* Green */
--color-warning-500: #f59e0b;  /* Amber */
--color-error-500: #ef4444;    /* Red */
--color-info-500: #3b82f6;     /* Blue */
```

#### 5.1.2 Couleurs par Domaine

**Audio & Streaming** :
- Waveform : `#0ea5e9` (primary blue)
- Playing indicator : `#10b981` (success green)
- Paused indicator : `#6b7280` (gray)

**Chat & Communication** :
- Online status : `#10b981` (green)
- Away status : `#f59e0b` (amber)
- Offline status : `#6b7280` (gray)
- Typing indicator : `#0ea5e9` (primary)

**Marketplace** :
- Price : `#0ea5e9` (primary)
- Discount : `#ef4444` (error red)
- Free badge : `#10b981` (success)

**Social** :
- Like/Heart : `#ef4444` (red)
- Follow button : `#0ea5e9` (primary)
- Verified badge : `#0ea5e9` (primary)

**Admin & Moderation** :
- Approved : `#10b981` (green)
- Pending : `#f59e0b` (amber)
- Rejected : `#ef4444` (red)
- Banned : `#991b1b` (dark red)

#### 5.1.3 Dark Mode

**Backgrounds** :
```css
--bg-primary: var(--color-gray-950);      /* #030712 */
--bg-secondary: var(--color-gray-900);   /* #111827 */
--bg-tertiary: var(--color-gray-800);    /* #1f2937 */
```

**Text** :
```css
--text-primary: var(--color-gray-50);    /* #f9fafb */
--text-secondary: var(--color-gray-300); /* #d1d5db */
--text-tertiary: var(--color-gray-500);   /* #6b7280 */
```

**Borders** :
```css
--border-primary: var(--color-gray-800);  /* #1f2937 */
--border-secondary: var(--color-gray-700); /* #374151 */
```

### 5.2 Typographie

#### 5.2.1 Font Families

**Sans-serif** (Principal) :
```css
--font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
```

**Monospace** (Code, données) :
```css
--font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
```

#### 5.2.2 Font Sizes

```css
--text-xs: 0.75rem;    /* 12px - Captions, labels */
--text-sm: 0.875rem;  /* 14px - Secondary text */
--text-base: 1rem;     /* 16px - Body text */
--text-lg: 1.125rem;   /* 18px - Large body */
--text-xl: 1.25rem;   /* 20px - Small headings */
--text-2xl: 1.5rem;   /* 24px - H4 */
--text-3xl: 1.875rem; /* 30px - H3 */
--text-4xl: 2.25rem;  /* 36px - H2 */
--text-5xl: 3rem;     /* 48px - H1 */
--text-6xl: 3.75rem;  /* 60px - Hero */
```

#### 5.2.3 Font Weights

```css
--font-light: 300;
--font-normal: 400;
--font-medium: 500;
--font-semibold: 600;
--font-bold: 700;
--font-extrabold: 800;
```

#### 5.2.4 Line Heights

```css
--leading-none: 1;
--leading-tight: 1.25;
--leading-snug: 1.375;
--leading-normal: 1.5;
--leading-relaxed: 1.625;
--leading-loose: 2;
```

#### 5.2.5 Typographie par Contexte

**Headings** :
- H1 : `text-4xl font-bold` (Hero, page titles)
- H2 : `text-3xl font-semibold` (Section titles)
- H3 : `text-2xl font-semibold` (Subsection titles)
- H4 : `text-xl font-medium` (Card titles)

**Body** :
- Body : `text-base font-normal` (Main content)
- Secondary : `text-sm font-normal` (Captions, metadata)
- Small : `text-xs font-normal` (Labels, timestamps)

**UI Elements** :
- Button : `text-base font-medium` (Default)
- Input : `text-base font-normal` (Form inputs)
- Label : `text-sm font-medium` (Form labels)

### 5.3 Espacements

#### 5.3.1 Spacing Scale (4px base)

```css
--spacing-0: 0;
--spacing-1: 0.25rem;  /* 4px */
--spacing-2: 0.5rem;   /* 8px */
--spacing-3: 0.75rem;  /* 12px */
--spacing-4: 1rem;     /* 16px */
--spacing-5: 1.25rem;  /* 20px */
--spacing-6: 1.5rem;   /* 24px */
--spacing-8: 2rem;     /* 32px */
--spacing-10: 2.5rem;  /* 40px */
--spacing-12: 3rem;    /* 48px */
--spacing-16: 4rem;    /* 64px */
--spacing-20: 5rem;    /* 80px */
--spacing-24: 6rem;    /* 96px */
```

#### 5.3.2 Container Widths

```css
--container-sm: 640px;
--container-md: 768px;
--container-lg: 1024px;
--container-xl: 1280px;
--container-2xl: 1536px;
```

### 5.4 Ombres

```css
--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
--shadow-base: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
--shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
--shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
```

### 5.5 Border Radius

```css
--radius-none: 0;
--radius-sm: 0.125rem;   /* 2px */
--radius-base: 0.25rem;  /* 4px */
--radius-md: 0.375rem;   /* 6px */
--radius-lg: 0.5rem;     /* 8px */
--radius-xl: 0.75rem;    /* 12px */
--radius-2xl: 1rem;      /* 16px */
--radius-full: 9999px;   /* Pill shape */
```

### 5.6 Animations & Transitions

#### 5.6.1 Durations

```css
--duration-fast: 150ms;
--duration-base: 200ms;
--duration-slow: 300ms;
--duration-slower: 500ms;
```

#### 5.6.2 Easing Functions

```css
--ease-in: cubic-bezier(0.4, 0, 1, 1);
--ease-out: cubic-bezier(0, 0, 0.2, 1);
--ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
```

#### 5.6.3 Animations Communes

**Fade In** :
```css
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
```

**Slide Up** :
```css
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
```

**Scale** :
```css
.scale-hover {
  transition: transform 150ms ease-out;
}
.scale-hover:hover {
  transform: scale(1.05);
}
```

### 5.7 Breakpoints Responsive

```css
/* Mobile First */
/* Base: 0 - 640px */

@media (min-width: 640px) { /* sm: tablet portrait */ }
@media (min-width: 768px) { /* md: tablet landscape */ }
@media (min-width: 1024px) { /* lg: laptop */ }
@media (min-width: 1280px) { /* xl: desktop */ }
@media (min-width: 1536px) { /* 2xl: large desktop */ }
```

---

## 6. PATTERNS UX RÉCURRENTS

### 6.1 Flows Utilisateur Communs

#### 6.1.1 Onboarding Flow

**Étapes** :
1. Landing Page → Click "Sign Up"
2. Registration Form (Email, Username, Password)
3. Email Verification Sent
4. Verify Email (click link)
5. Welcome / Onboarding
6. Profile Setup (optional)
7. Role Selection (Listener/Creator)
8. First Interaction (Upload track OR Follow users)
9. Dashboard

**Composants UI** :
- `LandingPage` (hero, CTA)
- `RegisterForm` (multi-step)
- `VerifyEmailPage` (instructions, resend)
- `WelcomeModal` (tour, tips)
- `ProfileSetupWizard` (steps, progress)
- `RoleSelector` (cards, descriptions)
- `OnboardingTooltip` (guided tour)

#### 6.1.2 Track Upload Flow

**Étapes** :
1. Dashboard → Click "Upload"
2. Select File (drag & drop or file picker)
3. Upload Progress (with cancel option)
4. Extract Metadata (auto)
5. Edit Metadata Form (title, artist, genre, cover art)
6. Privacy Settings (public, private, unlisted)
7. Preview Track
8. Confirm & Publish
9. Processing Status (waveform, transcoding)
10. Track Live (appears in feed)

**Composants UI** :
- `UploadButton` (trigger)
- `FileUploader` (drag-drop, progress)
- `UploadProgress` (percentage, cancel)
- `MetadataForm` (fields, validation)
- `CoverArtUploader` (crop, preview)
- `PrivacySelector` (radio, descriptions)
- `TrackPreview` (player, waveform)
- `PublishButton` (confirm)
- `ProcessingStatus` (steps, progress)

#### 6.1.3 Purchase Flow

**Étapes** :
1. Browse Marketplace
2. Click Product → View Details
3. Listen to Preview (30-60 sec)
4. Click "Add to Cart"
5. Continue Shopping OR Checkout
6. Cart Review (items, subtotal, discount, tax, total)
7. Click "Proceed to Checkout"
8. Select Payment Method (Stripe, PayPal, Crypto)
9. Enter Billing Info
10. Review Order
11. Click "Place Order"
12. Payment Processing (Stripe/PayPal)
13. Payment Successful (confirmation, download links, invoice)
14. Download Files

**Composants UI** :
- `ProductCard` (preview, add to cart)
- `ProductDetails` (gallery, description, reviews)
- `PreviewPlayer` (30-60s limit)
- `AddToCartButton` (added state)
- `CartPanel` (sidebar, items, summary)
- `CheckoutFlow` (multi-step wizard)
- `PaymentForm` (Stripe, PayPal, Crypto)
- `OrderConfirmation` (success, download links)
- `InvoiceViewer` (PDF, download)

#### 6.1.4 Chat Flow

**Étapes** :
1. Open Chat (sidebar, modal, page)
2. Select Room/User
3. View Message History (load more)
4. Type Message (with mentions, emojis)
5. Send Message (real-time)
6. Receive Message (notification, badge)
7. React to Message (emoji reactions)
8. Reply to Message (thread)
9. Edit/Delete Message (own messages)

**Composants UI** :
- `ChatWindow` (container)
- `RoomList` (sidebar)
- `MessageList` (virtualized)
- `MessageBubble` (sent, received)
- `ChatInput` (text, emoji, file)
- `EmojiPicker` (grid, search)
- `ReactionPicker` (quick reactions)
- `ThreadView` (nested)
- `NotificationBadge` (unread count)

### 6.2 États d'Interface Récurrents

#### 6.2.1 Loading States

**Patterns** :
- **Skeleton Loaders** : Pour contenu (cards, lists)
- **Spinners** : Pour actions (buttons, modals)
- **Progress Bars** : Pour uploads, processing
- **Skeletons** : Pour pages entières

**Composants** :
- `SkeletonCard` (track, user, product)
- `SkeletonList` (items)
- `Spinner` (sizes, colors)
- `ProgressBar` (linear, circular)
- `LoadingOverlay` (full page)

#### 6.2.2 Error States

**Patterns** :
- **Inline Errors** : Dans forms (field-level)
- **Toast Errors** : Pour actions (temporary)
- **Alert Banners** : Pour erreurs critiques (persistent)
- **Error Pages** : Pour erreurs serveur (404, 500)

**Composants** :
- `ErrorMessage` (field-level)
- `Toast` (error variant)
- `Alert` (error banner)
- `ErrorPage` (404, 500, offline)

#### 6.2.3 Empty States

**Patterns** :
- **No Data** : Listes vides (tracks, playlists, messages)
- **No Results** : Recherche sans résultats
- **First Time** : Première utilisation (onboarding)

**Composants** :
- `EmptyState` (icon, message, action)
- `EmptyTrackList` (upload CTA)
- `EmptyPlaylist` (add tracks CTA)
- `EmptySearchResults` (suggestions)
- `EmptyChat` (start conversation)

#### 6.2.4 Success States

**Patterns** :
- **Toast Success** : Pour actions réussies (temporary)
- **Success Pages** : Pour flows complets (registration, purchase)
- **Success Badges** : Pour statuts (verified, completed)

**Composants** :
- `Toast` (success variant)
- `SuccessPage` (confirmation, next steps)
- `SuccessBadge` (icon, text)

### 6.3 Feedback Patterns

#### 6.3.1 Validation

**Patterns** :
- **Real-time Validation** : Pendant la saisie
- **Field-level Errors** : Sous chaque champ
- **Success Indicators** : Checkmarks, green borders
- **Password Strength** : Barre progression, critères

**Composants** :
- `ValidationMessage` (error, success)
- `PasswordStrengthIndicator` (bar, criteria)
- `EmailValidation` (format check)

#### 6.3.2 Confirmation

**Patterns** :
- **Confirm Dialogs** : Pour actions destructives
- **Confirmation Steps** : Dans multi-step forms
- **Double Confirmation** : Pour actions critiques (delete account)

**Composants** :
- `ConfirmDialog` (title, message, actions)
- `MultiStepForm` (steps, progress, confirm)

#### 6.3.3 Notifications

**Patterns** :
- **Toast Notifications** : Temporaires (3-5s)
- **Notification Center** : Persistantes (dropdown, sidebar)
- **Badge Counters** : Nombre non lus
- **Push Notifications** : Navigateur, mobile

**Composants** :
- `Toast` (success, error, info, warning)
- `NotificationCenter` (list, filters)
- `NotificationBadge` (count, dot)
- `NotificationCard` (type, message, action)

### 6.4 Empty States par Contexte

| Contexte | Message | Action | Icon |
|-----------|---------|--------|------|
| **No Tracks** | "You haven't uploaded any tracks yet" | "Upload Your First Track" | Music |
| **No Playlists** | "Create your first playlist" | "Create Playlist" | Playlist |
| **No Followers** | "You don't have any followers yet" | "Share Your Profile" | Users |
| **No Messages** | "No messages yet" | "Start a Conversation" | Message |
| **No Products** | "No products in marketplace" | "Browse Categories" | Shopping |
| **No Search Results** | "No results found" | "Try Different Keywords" | Search |
| **Cart Empty** | "Your cart is empty" | "Browse Marketplace" | Shopping Cart |
| **No Orders** | "You haven't made any purchases" | "Browse Products" | Receipt |

---

## 7. RECOMMANDATIONS POUR DESIGN SYSTEM v3

### 7.1 Composants Prioritaires à Créer

#### 7.1.1 Phase 1 : Foundation (P0 - 2 semaines)

**Composants de Base** :
1. ✅ `Button` (tous variants, sizes, states)
2. ✅ `Input` (tous types, validation)
3. ✅ `Card` (base, variants)
4. ✅ `Modal` (tous sizes, accessible)
5. ✅ `Toast` (tous types)
6. ✅ `Spinner` (sizes, colors)
7. ✅ `Avatar` (image, initials, status)
8. ✅ `Badge` (count, status)
9. ✅ `EmptyState` (générique)
10. ✅ `Skeleton` (card, list, text)

**Justification** : Utilisés dans **100% des features**. Foundation obligatoire.

#### 7.1.2 Phase 2 : Audio Core (P0 - 2 semaines)

**Composants Audio** :
1. ✅ `AudioPlayer` (full, mini, embedded)
2. ✅ `WaveformViewer` (interactive, seekable)
3. ✅ `ProgressBar` (seekable, time display)
4. ✅ `VolumeControl` (slider, mute toggle)
5. ✅ `PlayPauseButton` (states: playing, paused, loading)
6. ✅ `QueuePanel` (list, drag-drop)
7. ✅ `PlaylistEditor` (tracks management)

**Justification** : Core audio features (F106-F150) nécessitent ces composants en priorité.

#### 7.1.3 Phase 3 : Auth & Forms (P0 - 1 semaine)

**Composants Auth** :
1. ✅ `LoginForm` (email, password, OAuth)
2. ✅ `RegisterForm` (multi-step, validation)
3. ✅ `PasswordInput` (show/hide, strength)
4. ✅ `TwoFactorSetupModal` (QR code)
5. ✅ `TwoFactorVerifyInput` (6-digit code)
6. ✅ `SessionList` (active sessions)

**Justification** : Features F001-F030 (Auth) sont P0 et bloquantes.

#### 7.1.4 Phase 4 : Chat Core (P1 - 2 semaines)

**Composants Chat** :
1. ✅ `ChatWindow` (1-to-1, group, room)
2. ✅ `MessageBubble` (sent, received, system)
3. ✅ `ChatInput` (text, emoji, file)
4. ✅ `MessageList` (virtualized, infinite scroll)
5. ✅ `EmojiPicker` (grid, search)
6. ✅ `TypingIndicator` (animated)
7. ✅ `OnlineStatusBadge` (green dot, away, offline)
8. ✅ `RoomList` (sidebar)

**Justification** : Features F151-F185 (Chat) nécessitent composants temps réel.

#### 7.1.5 Phase 5 : Marketplace Core (P1 - 2 semaines)

**Composants Marketplace** :
1. ✅ `ProductCard` (grid, list variants)
2. ✅ `CartPanel` (sidebar, items, summary)
3. ✅ `CheckoutFlow` (multi-step wizard)
4. ✅ `PaymentForm` (Stripe, PayPal)
5. ✅ `PriceDisplay` (fixed, PWYW, free)
6. ✅ `LicenseSelector` (radio, comparison)
7. ✅ `RatingStars` (display, input)

**Justification** : Features F226-F275 (Marketplace) nécessitent flow complet.

#### 7.1.6 Phase 6 : Social Core (P1 - 1 semaine)

**Composants Social** :
1. ✅ `ProfileHeader` (avatar, banner, bio, stats)
2. ✅ `FollowButton` (follow, unfollow, pending)
3. ✅ `PostCard` (text, image, audio, video)
4. ✅ `PostEditor` (rich text, media)
5. ✅ `CommentList` (nested, paginated)
6. ✅ `LikeButton` (heart, count)
7. ✅ `FeedGrid` (masonry, grid, list)

**Justification** : Features F186-F225 (Social) nécessitent composants feed.

#### 7.1.7 Phase 7 : Admin Core (P1 - 1 semaine)

**Composants Admin** :
1. ✅ `AdminDashboard` (stats, quick actions)
2. ✅ `UserTable` (sortable, filterable, paginated)
3. ✅ `ModerationPanel` (queue, actions)
4. ✅ `ReportCard` (details, timeline)
5. ✅ `FeatureFlagsPanel` (toggle switches)

**Justification** : Features F411-F435 (Admin) nécessitent outils modération.

### 7.2 Variantes Nécessaires

#### 7.2.1 Buttons - Variantes Complètes

**Par Variant** :
- `ButtonPrimary` : 4 sizes × 5 states = **20 variantes**
- `ButtonSecondary` : 4 sizes × 5 states = **20 variantes**
- `ButtonGhost` : 4 sizes × 5 states = **20 variantes**
- `ButtonDanger` : 4 sizes × 5 states = **20 variantes**
- `ButtonLink` : 4 sizes × 3 states = **12 variantes**
- `ButtonIcon` : 4 sizes × 5 states = **20 variantes**

**Total Buttons** : **112 variantes**

#### 7.2.2 Inputs - Variantes Complètes

**Par Type** :
- `TextInput` : 5 states = **5 variantes**
- `EmailInput` : 5 states + validation = **5 variantes**
- `PasswordInput` : 5 states + strength = **5 variantes**
- `SearchInput` : 5 states + autocomplete = **5 variantes**
- `FileInput` : 5 states + drag-drop = **5 variantes**
- `Select` : 5 states + multi-select = **10 variantes**
- `Textarea` : 5 states = **5 variantes**
- `Checkbox` : 3 states = **3 variantes**
- `Radio` : 3 states = **3 variantes**
- `Switch` : 3 states = **3 variantes**
- `RangeSlider` : 3 states = **3 variantes**

**Total Inputs** : **57 variantes**

#### 7.2.3 Cards - Variantes par Type

**Par Type de Card** :
- `Card` (base) : 3 sizes × 4 states = **12 variantes**
- `TrackCard` : 3 sizes × 4 states = **12 variantes**
- `UserCard` : 3 sizes × 4 states = **12 variantes**
- `ProductCard` : 3 sizes × 4 states = **12 variantes**
- `PlaylistCard` : 3 sizes × 4 states = **12 variantes**
- `CourseCard` : 3 sizes × 4 states = **12 variantes**
- `PostCard` : 3 sizes × 4 states = **12 variantes**
- `MessageCard` : 2 sizes × 4 states = **8 variantes**
- `NotificationCard` : 2 sizes × 4 states = **8 variantes**

**Total Cards** : **100 variantes**

#### 7.2.4 Audio Player - Variantes

**Par Variant** :
- `AudioPlayerFull` : 1 variant (tous contrôles)
- `AudioPlayerMini` : 1 variant (compact)
- `AudioPlayerEmbedded` : 1 variant (dans card)

**Sous-composants** :
- `PlayPauseButton` : 3 states (playing, paused, loading)
- `VolumeControl` : 2 types (slider, button) × 3 states
- `ProgressBar` : 2 types (seekable, non-seekable) × 2 states

**Total Audio Player** : **~15 variantes**

#### 7.2.5 Chat Components - Variantes

**Par Composant** :
- `MessageBubble` : 5 types (sent, received, system, edited, deleted) × 3 states = **15 variantes**
- `ChatInput` : 4 types (text, emoji, file, audio) × 3 states = **12 variantes**
- `OnlineStatusBadge` : 3 states (online, away, offline) = **3 variantes**

**Total Chat** : **~30 variantes**

### 7.3 Thèmes/Modes

#### 7.3.1 Light Mode (Par Défaut)

**Couleurs** :
- Background : `#ffffff` (white)
- Surface : `#f9fafb` (gray-50)
- Text Primary : `#111827` (gray-900)
- Text Secondary : `#6b7280` (gray-500)
- Border : `#e5e7eb` (gray-200)

**Usage** : Mode par défaut, meilleure lisibilité jour.

#### 7.3.2 Dark Mode (Obligatoire)

**Couleurs** :
- Background : `#030712` (gray-950)
- Surface : `#111827` (gray-900)
- Text Primary : `#f9fafb` (gray-50)
- Text Secondary : `#d1d5db` (gray-300)
- Border : `#1f2937` (gray-800)

**Usage** : Mode préféré utilisateurs audio (écoute nocturne).

#### 7.3.3 High Contrast Mode (Accessibilité)

**Couleurs** :
- Background : `#000000` (black)
- Surface : `#1a1a1a` (near black)
- Text Primary : `#ffffff` (white)
- Text Secondary : `#cccccc` (light gray)
- Border : `#ffffff` (white, 2px)

**Usage** : WCAG AAA, utilisateurs malvoyants.

#### 7.3.4 Auto Mode (Système)

**Détection** : `prefers-color-scheme` media query
- Light : 6h-20h (configurable)
- Dark : 20h-6h (configurable)

**Usage** : Respect préférences système utilisateur.

### 7.4 Responsive Breakpoints Critiques

#### 7.4.1 Mobile (< 640px)

**Priorités** :
- Navigation : Bottom tab bar
- Audio Player : Mini player (collapsed)
- Chat : Full-screen modal
- Forms : Single column, large inputs
- Cards : Single column, full width

**Composants Adaptatifs** :
- `MobileNav` (bottom bar)
- `Drawer` (slide from side)
- `FullscreenModal` (mobile)
- `StackLayout` (vertical)

#### 7.4.2 Tablet (640px - 1024px)

**Priorités** :
- Navigation : Sidebar collapsible
- Audio Player : Mini player (expanded)
- Chat : Sidebar + main
- Forms : Two columns
- Cards : 2-3 columns grid

**Composants Adaptatifs** :
- `Sidebar` (collapsible)
- `Grid` (2-3 columns)
- `SplitLayout` (sidebar + main)

#### 7.4.3 Desktop (1024px+)

**Priorités** :
- Navigation : Sidebar permanent
- Audio Player : Full player
- Chat : Multi-panel
- Forms : Multi-column
- Cards : 4+ columns grid

**Composants Adaptatifs** :
- `Sidebar` (permanent)
- `Grid` (4+ columns)
- `MultiPanelLayout` (chat, player, main)

#### 7.4.4 Large Desktop (1536px+)

**Priorités** :
- Navigation : Sidebar + top bar
- Audio Player : Full player + waveform
- Chat : Multi-room view
- Forms : Wide forms (max-width: 1200px)
- Cards : 5-6 columns grid

**Composants Adaptatifs** :
- `WideLayout` (max-width containers)
- `MultiRoomView` (chat)
- `EnhancedPlayer` (waveform visible)

### 7.5 Composants par Priorité d'Implémentation

#### 7.5.1 P0 - Critical (Semaines 1-4)

**Foundation (Semaine 1-2)** :
- Button, Input, Card, Modal, Toast, Spinner, Avatar, Badge, EmptyState, Skeleton

**Audio Core (Semaine 2-3)** :
- AudioPlayer, WaveformViewer, ProgressBar, VolumeControl, QueuePanel

**Auth Core (Semaine 3-4)** :
- LoginForm, RegisterForm, PasswordInput, TwoFactorSetupModal

**Total P0** : **~25 composants**

#### 7.5.2 P1 - High Priority (Semaines 5-10)

**Chat Core (Semaine 5-6)** :
- ChatWindow, MessageBubble, ChatInput, MessageList, EmojiPicker, TypingIndicator

**Marketplace Core (Semaine 6-8)** :
- ProductCard, CartPanel, CheckoutFlow, PaymentForm, PriceDisplay

**Social Core (Semaine 8-9)** :
- ProfileHeader, FollowButton, PostCard, PostEditor, FeedGrid

**Admin Core (Semaine 9-10)** :
- AdminDashboard, UserTable, ModerationPanel, ReportCard

**Total P1** : **~40 composants**

#### 7.5.3 P2 - Medium Priority (Semaines 11-20)

**Audio Avancé** :
- SpectrogramViewer, EqualizerBars, PeakMeters, PlaybackSpeedControl

**Chat Avancé** :
- ThreadView, ReactionPicker, MentionAutocomplete, RichPresenceDisplay

**Marketplace Avancé** :
- LicenseSelector, ReviewCard, SalesChart, RevenueDisplay

**Social Avancé** :
- HashtagBadge, TrendingHashtagsList, GroupCard, EventCard

**Total P2** : **~50 composants**

#### 7.5.4 P3-P4 - Lower Priority (Semaines 21+)

**Features Futures** :
- Livestreaming components
- Collaboration components
- Web3/Blockchain components
- Advanced analytics components

**Total P3-P4** : **~135 composants**

---

## 8. MATRICE COMPOSANTS ↔ FEATURES

### 8.1 Matrice de Couverture

| Composant | Features Utilisatrices | % Coverage | Priorité |
|-----------|------------------------|------------|----------|
| `Button` | ~400 features | 66.7% | P0 |
| `Input` | ~350 features | 58.3% | P0 |
| `Card` | ~200 features | 33.3% | P0 |
| `Modal` | ~150 features | 25.0% | P0 |
| `AudioPlayer` | ~45 features | 7.5% | P0 |
| `ChatWindow` | ~35 features | 5.8% | P1 |
| `ProductCard` | ~50 features | 8.3% | P1 |
| `ProfileHeader` | ~40 features | 6.7% | P1 |
| `AdminDashboard` | ~25 features | 4.2% | P1 |
| `Chart` | ~30 features | 5.0% | P2 |

### 8.2 Composants les Plus Réutilisés

**Top 10 Composants** :
1. `Button` : 400 features (66.7%)
2. `Input` : 350 features (58.3%)
3. `Card` : 200 features (33.3%)
4. `Modal` : 150 features (25.0%)
5. `Toast` : 120 features (20.0%)
6. `Spinner` : 120 features (20.0%)
7. `Avatar` : 100 features (16.7%)
8. `Badge` : 100 features (16.7%)
9. `EmptyState` : 80 features (13.3%)
10. `Table` : 80 features (13.3%)

### 8.3 Composants Spécialisés par Domaine

**Audio Domain** :
- `AudioPlayer` : 45 features
- `WaveformViewer` : 15 features
- `QueuePanel` : 30 features
- `PlaylistEditor` : 30 features

**Chat Domain** :
- `ChatWindow` : 35 features
- `MessageBubble` : 35 features
- `EmojiPicker` : 25 features
- `TypingIndicator` : 25 features

**Marketplace Domain** :
- `ProductCard` : 50 features
- `CartPanel` : 30 features
- `CheckoutFlow` : 30 features
- `PaymentForm` : 30 features

**Social Domain** :
- `ProfileHeader` : 40 features
- `PostCard` : 30 features
- `FollowButton` : 40 features
- `FeedGrid` : 30 features

---

## 9. GAPS IDENTIFIÉS DANS LA DOCUMENTATION

### 9.1 Features Ambiguës ou Mal Documentées

**Features sans Composants UI Explicites** :
- F456-F470 (AI Features) : Composants UI non spécifiés
- F471-F480 (Livestreaming) : UI streaming live non détaillée
- F481-F490 (Collaboration RT) : Composants collaboration non définis
- F491-F500 (Web3/Blockchain) : UI wallet, NFT non spécifiée

**Recommandation** : Créer RFC pour spécifier composants UI de ces features.

### 9.2 États UI Manquants

**États Non Documentés** :
- États de transition (pending → processing → completed)
- États d'erreur récupérables (retry, cancel)
- États de synchronisation (syncing, synced, conflict)
- États de permission (unauthorized, forbidden, rate-limited)

**Recommandation** : Documenter tous les états possibles par composant.

### 9.3 Responsive Design Manquant

**Breakpoints Non Spécifiés** :
- Comportement audio player mobile vs desktop
- Navigation mobile (bottom bar) non documentée
- Chat mobile (full-screen) non spécifié
- Marketplace mobile (checkout flow) non détaillé

**Recommandation** : Spécifier comportement responsive pour chaque composant.

### 9.4 Accessibilité Manquante

**WCAG AAA Non Détaillé** :
- Navigation clavier complète non spécifiée
- Screen reader labels non documentés
- Focus management non détaillé
- Contraste couleurs non validé partout

**Recommandation** : Audit accessibilité complet, documentation ARIA.

---

## 10. ESTIMATION EFFORT DESIGN SYSTEM v3

### 10.1 Par Phase

| Phase | Composants | Temps Estimé | Équipe |
|-------|------------|--------------|--------|
| **Phase 1: Foundation** | 10 composants | 2 semaines | 2 designers + 2 devs |
| **Phase 2: Audio Core** | 7 composants | 2 semaines | 1 designer + 2 devs |
| **Phase 3: Auth & Forms** | 6 composants | 1 semaine | 1 designer + 1 dev |
| **Phase 4: Chat Core** | 8 composants | 2 semaines | 1 designer + 2 devs |
| **Phase 5: Marketplace** | 7 composants | 2 semaines | 1 designer + 2 devs |
| **Phase 6: Social Core** | 7 composants | 1 semaine | 1 designer + 1 dev |
| **Phase 7: Admin Core** | 5 composants | 1 semaine | 1 designer + 1 dev |
| **Phase 8: P2 Components** | 50 composants | 10 semaines | 2 designers + 3 devs |
| **Phase 9: P3-P4 Components** | 135 composants | 20 semaines | 2 designers + 3 devs |

**Total** : **~250 composants** en **~41 semaines** (~10 mois)

### 10.2 Par Composant Type

| Type Composant | Temps Moyen | Complexité |
|----------------|-------------|------------|
| **Button** | 1 jour | Simple |
| **Input** | 2 jours | Moyen |
| **Card** | 1 jour | Simple |
| **Modal** | 3 jours | Complexe |
| **AudioPlayer** | 2 semaines | Très Complexe |
| **ChatWindow** | 2 semaines | Très Complexe |
| **CheckoutFlow** | 1 semaine | Complexe |
| **Chart** | 1 semaine | Complexe |

### 10.3 Ressources Nécessaires

**Équipe Recommandée** :
- **Designers** : 2-3 designers UI/UX
- **Developers** : 3-4 développeurs frontend (React/TypeScript)
- **QA** : 1 testeur accessibilité + 1 testeur fonctionnel
- **Product** : 1 product owner (validation)

**Budget Estimé** :
- Design : ~200 jours × 2 designers = 400 jours
- Development : ~400 jours × 3 devs = 1200 jours
- QA : ~100 jours
- **Total** : ~1700 jours-personnes (~8.5 personnes × 10 mois)

---

## 11. CONCLUSION

### 11.1 Résumé Exécutif Final

**Scope Design System v3** :
- **600 features** à supporter
- **250+ composants** à créer
- **24 domaines fonctionnels**
- **Multi-plateformes** (Web, Mobile, Desktop)
- **Multi-rôles** (6 rôles utilisateurs)
- **Accessibilité WCAG AAA** requise
- **Dark Mode** obligatoire
- **Responsive** mobile-first

**Complexité** : ⭐⭐⭐⭐⭐ (5/5) - **Ultra-complexe**

**Comparaison** :
- **Spotify** : ~200 features → Design System complexe
- **Discord** : ~150 features → Design System très complexe
- **Veza** : **600 features** → Design System **ultra-complexe**

### 11.2 Prochaines Étapes Recommandées

1. **Validation** : Review rapport avec équipe Product + Design
2. **Priorisation** : Valider phases P0-P1 (composants critiques)
3. **Planning** : Créer roadmap détaillée (sprints, milestones)
4. **Prototypage** : Créer prototypes Figma pour composants P0
5. **Implémentation** : Commencer Phase 1 (Foundation)

### 11.3 Risques Identifiés

**Risques Techniques** :
- ⚠️ **Scope Creep** : 600 features = risque de dépassement
- ⚠️ **Complexité Audio** : Waveform, streaming = très complexe
- ⚠️ **Temps Réel** : Chat, collaboration = latence critique
- ⚠️ **Accessibilité** : WCAG AAA = effort significatif

**Mitigation** :
- Prioriser P0-P1 uniquement (MVP)
- Prototyper composants complexes avant implémentation
- Tests accessibilité dès Phase 1
- Revue régulière avec stakeholders

### 11.4 Succès Critères

**Design System v3 sera considéré réussi si** :
- ✅ **80%+ des composants P0-P1** implémentés
- ✅ **WCAG AAA compliance** validée
- ✅ **Dark Mode** fonctionnel partout
- ✅ **Responsive** sur tous breakpoints
- ✅ **Documentation** complète (Storybook)
- ✅ **Réutilisation** > 80% (pas de composants custom)
- ✅ **Performance** : 60 FPS animations
- ✅ **Adoption** : Toutes nouvelles features utilisent DS v3

---

## 12. INVENTAIRE DÉTAILLÉ DES CATÉGORIES MANQUANTES

### 12.1 📁 Gestion de Fichiers (40 features - Détail)

| ID | Feature | Description | Composants UI | États | Priorité |
|----|---------|-------------|---------------|-------|----------|
| F306 | Upload Single File | Upload fichier unique | FileUploader, UploadButton | uploading, uploaded, error | P0 |
| F307 | Upload Multiple Files | Upload multiples fichiers | MultiFileUploader, FileList | uploading, uploaded, error | P1 |
| F308 | Drag & Drop Upload | Upload drag-drop | DragDropZone, FileUploader | dragging, dropped | P1 |
| F309 | Upload Progress | Progression upload | ProgressBar, UploadStatus | 0-100% | P0 |
| F310 | Cancel Upload | Annuler upload | CancelButton, ConfirmDialog | cancelling, cancelled | P1 |
| F311 | File Preview | Aperçu fichier | FilePreview, PreviewModal | loading, ready, error | P1 |
| F312 | Image Preview | Aperçu image | ImagePreview, ImageViewer | loading, ready | P1 |
| F313 | Audio Preview | Aperçu audio | AudioPreview, PreviewPlayer | loading, playing, paused | P1 |
| F314 | Video Preview | Aperçu vidéo | VideoPreview, VideoViewer | loading, playing, paused | P2 |
| F315 | Document Preview | Aperçu document | DocumentPreview, PDFViewer | loading, ready | P2 |
| F316 | File Metadata | Métadonnées fichier | MetadataDisplay, MetadataEditor | - | P1 |
| F317 | Auto Metadata Extraction | Extraction auto | MetadataExtractor (auto) | extracting, extracted | P1 |
| F318 | Edit Metadata | Éditer métadonnées | MetadataForm, MetadataEditor | editing, saving | P1 |
| F319 | File Rename | Renommer fichier | RenameButton, RenameInput | renaming, renamed | P1 |
| F320 | File Delete | Supprimer fichier | DeleteButton, ConfirmDialog | deleting, deleted | P1 |
| F321 | File Download | Télécharger fichier | DownloadButton, DownloadProgress | downloading, downloaded | P0 |
| F322 | File Share | Partager fichier | ShareButton, ShareModal | - | P1 |
| F323 | File Versioning | Versions fichier | VersionList, VersionSelector | - | P2 |
| F324 | File History | Historique fichier | HistoryList, HistoryItem | empty, has-history | P2 |
| F325 | File Permissions | Permissions fichier | PermissionsEditor, PermissionList | - | P2 |
| F326 | File Tags | Tags fichiers | TagInput, TagList | - | P1 |
| F327 | File Search | Recherche fichiers | SearchInput, SearchResults | empty, has-results | P1 |
| F328 | File Filters | Filtres fichiers | FilterPanel, FilterChips | - | P1 |
| F329 | File Sort | Tri fichiers | SortSelector, SortOptions | - | P1 |
| F330 | File Grid View | Vue grille | FileGrid, FileCard | - | P1 |
| F331 | File List View | Vue liste | FileList, FileListItem | - | P1 |
| F332 | File Thumbnail | Miniature fichier | ThumbnailGenerator, ThumbnailDisplay | generating, ready | P1 |
| F333 | File Compression | Compression fichier | CompressButton, CompressionProgress | compressing, compressed | P3 |
| F334 | File Conversion | Conversion format | ConvertButton, FormatSelector | converting, converted | P3 |
| F335 | Batch Operations | Opérations batch | BatchSelector, BatchActions | selecting, processing | P2 |
| F336 | File Duplicate | Dupliquer fichier | DuplicateButton | duplicating, duplicated | P2 |
| F337 | File Move | Déplacer fichier | MoveButton, FolderSelector | moving, moved | P2 |
| F338 | File Copy | Copier fichier | CopyButton, DestinationSelector | copying, copied | P2 |
| F339 | File Archive | Archiver fichier | ArchiveButton, ArchiveProgress | archiving, archived | P2 |
| F340 | File Restore | Restaurer fichier | RestoreButton, RestoreList | restoring, restored | P2 |
| F341 | File Trash | Corbeille | TrashList, RestoreButton | empty, has-items | P2 |
| F342 | File Storage Quota | Quota stockage | StorageQuota, QuotaBar | warning, exceeded | P1 |
| F343 | File Encryption | Chiffrement fichier | EncryptButton, EncryptionStatus | encrypted, unencrypted | P3 |
| F344 | File Virus Scan | Scan virus | ScanButton, ScanStatus | scanning, clean, infected | P3 |
| F345 | File Analytics | Stats fichiers | FileAnalytics, AnalyticsChart | - | P3 |

**Composants UI Spécialisés Fichiers Identifiés** :
- `FileUploader` (single, multi, drag-drop)
- `FileList` (grid, list, virtualized)
- `FilePreview` (image, audio, video, document)
- `MetadataEditor` (form, auto-fill)
- `FileActions` (download, delete, share, move, copy)
- `StorageQuota` (usage bar, warning)

### 12.2 👤 Profils & Utilisateurs (35 features - Détail)

| ID | Feature | Description | Composants UI | États | Priorité |
|----|---------|-------------|---------------|-------|----------|
| F031 | View Profile | Voir profil | ProfilePage, ProfileHeader | - | P0 |
| F032 | Edit Profile | Éditer profil | EditProfileButton, ProfileForm | editing, saving | P1 |
| F033 | Avatar Upload | Upload avatar | AvatarUploader, AvatarCrop | uploading, cropping, saved | P1 |
| F034 | Banner Upload | Upload bannière | BannerUploader, BannerCrop | uploading, cropping, saved | P1 |
| F035 | Profile Bio | Bio profil | BioEditor, BioDisplay | editing, saved | P1 |
| F036 | Profile Links | Liens profil | LinksEditor, LinksList | adding, removing | P1 |
| F037 | Profile Location | Localisation | LocationInput, LocationDisplay | - | P2 |
| F038 | Profile Birthday | Date naissance | DateInput, BirthdayDisplay | - | P2 |
| F039 | Profile Pronouns | Pronoms | PronounsSelector, PronounsDisplay | - | P2 |
| F040 | Profile Privacy | Confidentialité | PrivacySettings, PrivacyToggle | - | P1 |
| F041 | Profile Stats | Statistiques | StatsCards, StatsDisplay | - | P1 |
| F042 | Profile Tracks | Tracks profil | TrackList, TrackGrid | empty, has-tracks | P0 |
| F043 | Profile Playlists | Playlists profil | PlaylistList, PlaylistGrid | empty, has-playlists | P1 |
| F044 | Profile Followers | Followers profil | FollowersList, FollowersCount | empty, has-followers | P1 |
| F045 | Profile Following | Following profil | FollowingList, FollowingCount | empty, has-following | P1 |
| F046 | Profile Likes | Likes profil | LikesList, LikesCount | empty, has-likes | P2 |
| F047 | Profile Collections | Collections | CollectionsList, CollectionCard | empty, has-collections | P2 |
| F048 | Profile Achievements | Achievements | AchievementsList, AchievementBadge | empty, has-achievements | P2 |
| F049 | Profile Badges | Badges | BadgesList, BadgeDisplay | empty, has-badges | P2 |
| F050 | Profile Verification | Vérification | VerificationBadge, VerificationStatus | verified, pending, unverified | P2 |
| F051 | Profile Settings | Paramètres | SettingsButton, SettingsModal | - | P1 |
| F052 | Profile Notifications | Notifications | NotificationSettings, NotificationToggle | - | P1 |
| F053 | Profile Email Settings | Email | EmailSettings, EmailToggle | - | P1 |
| F054 | Profile Social Links | Liens sociaux | SocialLinksEditor, SocialLinksList | - | P1 |
| F055 | Profile Theme | Thème | ThemeSelector, ThemePreview | light, dark, auto | P1 |
| F056 | Profile Language | Langue | LanguageSelector, LanguageList | - | P2 |
| F057 | Profile Timezone | Fuseau horaire | TimezoneSelector, TimezoneList | - | P2 |
| F058 | Profile Delete Account | Supprimer compte | DeleteAccountButton, DeleteAccountModal | confirming, deleted | P2 |
| F059 | Profile Export Data | Exporter données | ExportButton, ExportProgress | exporting, exported | P2 |
| F060 | Profile Activity | Activité | ActivityFeed, ActivityItem | empty, has-activity | P2 |
| F061 | Profile Recommendations | Recommandations | RecommendedUsersList, UserCard | - | P2 |
| F062 | Profile Similar Users | Utilisateurs similaires | SimilarUsersList, UserCard | - | P2 |
| F063 | Profile Blocked Users | Utilisateurs bloqués | BlockedUsersList, UnblockButton | empty, has-blocked | P2 |
| F064 | Profile Muted Users | Utilisateurs muets | MutedUsersList, UnmuteButton | empty, has-muted | P2 |
| F065 | Profile Preferences | Préférences | PreferencesForm, PreferenceToggle | - | P1 |

**Composants UI Spécialisés Profils Identifiés** :
- `ProfileHeader` (avatar, banner, bio, stats, actions)
- `ProfileSettings` (sections, tabs, forms)
- `AvatarUploader` (crop, preview, validation)
- `BannerUploader` (crop, preview, validation)
- `SocialLinksEditor` (add, remove, reorder, validate)
- `ProfileTabs` (tracks, playlists, about, activity)

### 12.3 🔍 Recherche & Découverte (30 features - Détail)

| ID | Feature | Description | Composants UI | États | Priorité |
|----|---------|-------------|---------------|-------|----------|
| F366 | Global Search | Recherche globale | SearchInput, SearchResults | empty, has-results, loading | P0 |
| F367 | Search Autocomplete | Autocomplete | AutocompleteDropdown, SuggestionList | typing, suggestions | P1 |
| F368 | Search Filters | Filtres recherche | FilterPanel, FilterChips | - | P1 |
| F369 | Search Sort | Tri résultats | SortSelector, SortOptions | - | P1 |
| F370 | Search Tabs | Onglets résultats | SearchTabs, TabList | tracks, users, playlists, products | P1 |
| F371 | Track Search | Recherche tracks | TrackSearchResults, TrackCard | empty, has-results | P0 |
| F372 | User Search | Recherche utilisateurs | UserSearchResults, UserCard | empty, has-results | P1 |
| F373 | Playlist Search | Recherche playlists | PlaylistSearchResults, PlaylistCard | empty, has-results | P1 |
| F374 | Product Search | Recherche produits | ProductSearchResults, ProductCard | empty, has-results | P1 |
| F375 | Advanced Search | Recherche avancée | AdvancedSearchForm, SearchBuilder | - | P2 |
| F376 | Search History | Historique recherche | SearchHistoryList, HistoryItem | empty, has-history | P2 |
| F377 | Search Suggestions | Suggestions | SuggestionsList, SuggestionCard | - | P1 |
| F378 | Trending Searches | Recherches tendance | TrendingSearchesList, TrendingBadge | - | P2 |
| F379 | Search Analytics | Stats recherche | SearchAnalytics, AnalyticsChart | - | P3 |
| F380 | Voice Search | Recherche vocale | VoiceSearchButton, VoiceInput | listening, processing | P3 |
| F381 | Image Search | Recherche image | ImageSearchInput, ImageUpload | - | P3 |
| F382 | Similar Tracks | Tracks similaires | SimilarTracksList, TrackCard | - | P2 |
| F383 | Recommended Tracks | Tracks recommandés | RecommendedTracksList, TrackCard | - | P1 |
| F384 | Discover Page | Page découverte | DiscoverPage, DiscoverGrid | - | P1 |
| F385 | Trending Tracks | Tracks tendance | TrendingTracksList, TrackCard | - | P1 |
| F386 | New Releases | Nouveautés | NewReleasesList, ReleaseCard | - | P1 |
| F387 | Top Charts | Classements | TopChartsList, ChartCard | - | P1 |
| F388 | Genre Browse | Navigation genre | GenreSelector, GenreGrid | - | P1 |
| F389 | Mood Browse | Navigation humeur | MoodSelector, MoodGrid | - | P2 |
| F390 | BPM Browse | Navigation BPM | BPMSelector, BPMRange | - | P2 |
| F391 | Key Browse | Navigation tonalité | KeySelector, KeyGrid | - | P2 |
| F392 | Year Browse | Navigation année | YearSelector, YearRange | - | P2 |
| F393 | Label Browse | Navigation label | LabelSelector, LabelGrid | - | P2 |
| F394 | Artist Browse | Navigation artiste | ArtistSelector, ArtistGrid | - | P1 |
| F395 | Collection Browse | Navigation collection | CollectionSelector, CollectionGrid | - | P2 |

**Composants UI Spécialisés Recherche Identifiés** :
- `SearchInput` (autocomplete, suggestions, clear)
- `SearchResults` (tabs, filters, sort, pagination)
- `SearchFilters` (genre, BPM, date, price, format)
- `RecommendationCarousel` (horizontal scroll, infinite)
- `TrendingBadge` (animated, clickable)

### 12.4 📊 Analytics & Statistiques (30 features - Détail)

| ID | Feature | Description | Composants UI | États | Priorité |
|----|---------|-------------|---------------|-------|----------|
| F396 | Track Analytics | Stats track | TrackAnalytics, AnalyticsChart | loading, ready | P1 |
| F397 | Play Analytics | Stats lectures | PlayChart, PlayStats | - | P1 |
| F398 | Download Analytics | Stats téléchargements | DownloadChart, DownloadStats | - | P1 |
| F399 | Revenue Analytics | Stats revenus | RevenueChart, RevenueDisplay | - | P1 |
| F400 | Audience Analytics | Stats audience | AudienceChart, AudienceStats | - | P2 |
| F401 | Geographic Analytics | Stats géographiques | MapChart, CountryList | - | P2 |
| F402 | Device Analytics | Stats appareils | DeviceChart, DeviceList | - | P2 |
| F403 | Time Analytics | Stats temporelles | TimeChart, TimeRange | - | P2 |
| F404 | Comparison Analytics | Comparaison | ComparisonChart, ComparisonSelector | - | P2 |
| F405 | Export Analytics | Exporter stats | ExportButton, ExportFormatSelector | exporting, exported | P2 |
| F406 | Analytics Dashboard | Dashboard | AnalyticsDashboard, StatsCards | loading, ready | P1 |
| F407 | Real-time Analytics | Stats temps réel | RealTimeChart, LiveIndicator | live, paused | P2 |
| F408 | Custom Reports | Rapports personnalisés | ReportBuilder, ReportEditor | - | P3 |
| F409 | Scheduled Reports | Rapports programmés | ScheduleEditor, ScheduleList | - | P3 |
| F410 | Analytics Alerts | Alertes stats | AlertSettings, AlertList | - | P3 |

**Composants UI Spécialisés Analytics Identifiés** :
- `AnalyticsDashboard` (cards, charts, filters)
- `Chart` (line, bar, pie, area, map)
- `StatsCard` (number, trend, period, comparison)
- `DateRangePicker` (calendar, presets, custom)
- `MetricCard` (value, change, sparkline, trend)

---

## 13. COMPOSANTS COMPOSITES & LAYOUTS

### 13.1 Layouts Principaux

#### 13.1.1 Dashboard Layout

**Structure** :
```
┌─────────────────────────────────────────┐
│ NavBar (top)                            │
├──────────┬──────────────────────────────┤
│ Sidebar  │ Main Content Area            │
│ (nav)    │  ┌────────────────────────┐  │
│          │  │ Page Header            │  │
│          │  ├────────────────────────┤  │
│          │  │ Content Grid/List        │  │
│          │  └────────────────────────┘  │
├──────────┴──────────────────────────────┤
│ AudioPlayer (bottom, sticky)            │
└─────────────────────────────────────────┘
```

**Composants** :
- `DashboardLayout` (container)
- `NavBar` (top navigation)
- `Sidebar` (left navigation, collapsible)
- `MainContent` (scrollable area)
- `AudioPlayer` (bottom sticky)

**Responsive** :
- Mobile : Sidebar → Drawer, NavBar → Bottom Tab Bar
- Tablet : Sidebar collapsible
- Desktop : Sidebar permanent

#### 13.1.2 Chat Layout

**Structure** :
```
┌─────────────────────────────────────────┐
│ RoomList (left sidebar)                 │
├──────────┬──────────────────────────────┤
│          │ ChatWindow (main)            │
│ Rooms    │  ┌────────────────────────┐ │
│          │  │ MessageList             │ │
│          │  │ (virtualized)           │ │
│          │  ├────────────────────────┤ │
│          │  │ ChatInput               │ │
│          │  └────────────────────────┘ │
└──────────┴──────────────────────────────┘
```

**Composants** :
- `ChatLayout` (container)
- `RoomList` (left sidebar, scrollable)
- `ChatWindow` (main area)
- `MessageList` (virtualized, infinite scroll)
- `ChatInput` (bottom sticky)

**Responsive** :
- Mobile : RoomList → Modal/Drawer, ChatWindow full-screen
- Desktop : Split view (RoomList + ChatWindow)

#### 13.1.3 Marketplace Layout

**Structure** :
```
┌─────────────────────────────────────────┐
│ NavBar (top)                            │
├─────────────────────────────────────────┤
│ Filters (top bar, collapsible)          │
├─────────────────────────────────────────┤
│ ProductGrid (main)                      │
│  ┌────┐ ┌────┐ ┌────┐ ┌────┐          │
│  │Card│ │Card│ │Card│ │Card│          │
│  └────┘ └────┘ └────┘ └────┘          │
└─────────────────────────────────────────┘
```

**Composants** :
- `MarketplaceLayout` (container)
- `FilterBar` (top, collapsible)
- `ProductGrid` (responsive grid)
- `ProductCard` (grid items)

**Responsive** :
- Mobile : 1 column, FilterBar → Drawer
- Tablet : 2-3 columns
- Desktop : 4-6 columns

### 13.2 Composants Composites

#### 13.2.1 TrackCard Composite

**Composants Inclus** :
- `Card` (base container)
- `Image` (cover art)
- `PlayButton` (overlay)
- `TrackInfo` (title, artist)
- `Duration` (time display)
- `ActionsMenu` (more options)

**Variants** :
- Grid : Square cover, compact info
- List : Horizontal, detailed info
- Featured : Large cover, prominent play button

#### 13.2.2 UserCard Composite

**Composants Inclus** :
- `Card` (base container)
- `Avatar` (user image, status indicator)
- `UserInfo` (name, username, verified badge)
- `FollowButton` (follow/unfollow)
- `Stats` (followers, tracks count)

**Variants** :
- Compact : Small avatar, minimal info
- Detailed : Large avatar, full stats
- Profile : Full profile header variant

#### 13.2.3 ProductCard Composite

**Composants Inclus** :
- `Card` (base container)
- `Image` (product cover)
- `PriceDisplay` (fixed, PWYW, free)
- `LicenseBadge` (license type)
- `RatingStars` (average rating)
- `AddToCartButton` (add to cart)
- `PreviewButton` (listen preview)

**Variants** :
- Grid : Square image, compact info
- List : Horizontal, detailed info
- Featured : Large image, prominent CTA

---

## 14. ANIMATIONS & MICRO-INTERACTIONS

### 14.1 Animations Système

#### 14.1.1 Transitions de Page

**Fade In** :
- Durée : 200ms
- Easing : `ease-out`
- Usage : Changement de page, modals

**Slide Up** :
- Durée : 300ms
- Easing : `ease-out`
- Usage : Modals, drawers, toasts

**Slide In** :
- Durée : 250ms
- Easing : `ease-out`
- Usage : Sidebar, drawers

#### 14.1.2 Animations Composants

**Button Hover** :
- Transform : `scale(1.02)`
- Shadow : `shadow-md` → `shadow-lg`
- Durée : 150ms

**Button Active** :
- Transform : `scale(0.98)`
- Durée : 100ms

**Card Hover** :
- Transform : `translateY(-4px)`
- Shadow : `shadow-md` → `shadow-xl`
- Durée : 200ms

**Input Focus** :
- Border color : Primary (animated)
- Ring : `ring-2 ring-primary-500`
- Durée : 200ms

### 14.2 Micro-Interactions

#### 14.2.1 Feedback Immédiat

**Click Feedback** :
- Ripple effect (material design)
- Scale animation (0.95 → 1.0)
- Durée : 150ms

**Hover Feedback** :
- Color transition
- Shadow elevation
- Durée : 200ms

**Loading Feedback** :
- Spinner animation (rotate)
- Skeleton shimmer
- Progress bar fill

#### 14.2.2 États Transitions

**Success State** :
- Checkmark animation (scale + fade)
- Green border flash
- Toast notification

**Error State** :
- Shake animation (horizontal)
- Red border flash
- Error message slide in

**Empty State** :
- Icon fade in
- Message slide up
- CTA button pulse (subtle)

### 14.3 Animations Audio-Spécifiques

#### 14.3.1 Waveform Animation

**Playing State** :
- Waveform bars animate (height variation)
- Color : Primary blue (pulsing)
- Smooth transitions (60 FPS)

**Paused State** :
- Waveform static
- Color : Gray (muted)

#### 14.3.2 Audio Player Animations

**Play → Pause** :
- Icon transition (smooth rotation)
- Progress bar continues (if buffered)

**Track Change** :
- Cover art fade out → fade in
- Metadata slide transition
- Progress bar reset animation

**Volume Change** :
- Volume bar fill animation
- Icon state change (mute/unmute)

### 14.4 Performance Animations

**GPU-Accelerated** :
- `transform` (translate, scale, rotate)
- `opacity`
- Éviter : `width`, `height`, `top`, `left`

**Will-Change** :
- Pré-annoncer animations : `will-change: transform`
- Retirer après animation

**Reduce Motion** :
- Respecter `prefers-reduced-motion`
- Désactiver animations si activé

---

## 15. ICÔNES & ILLUSTRATIONS

### 15.1 Système d'Icônes

#### 15.1.1 Bibliothèque d'Icônes

**Source** : Lucide React (recommandé)
- **Avantages** : Coherent, lightweight, customizable
- **Taille** : 16px, 20px, 24px, 32px, 48px
- **Style** : Outline (par défaut), Filled (variants)

**Icônes Principales** :
- Navigation : Home, Search, Library, Profile
- Audio : Play, Pause, Next, Previous, Volume, Shuffle, Repeat
- Social : Heart, Comment, Share, Follow
- Marketplace : Cart, Shopping, Credit Card
- Chat : Message, Send, Emoji, Attachment
- Admin : Settings, Users, Moderation, Analytics

#### 15.1.2 Usage des Icônes

**Tailles Standard** :
- `sm` : 16px (inline text, labels)
- `md` : 20px (buttons, default)
- `lg` : 24px (headers, prominent)
- `xl` : 32px (hero sections)
- `2xl` : 48px (empty states)

**Couleurs** :
- Primary : `text-primary-500`
- Secondary : `text-gray-500`
- Success : `text-success-500`
- Error : `text-error-500`
- Warning : `text-warning-500`

### 15.2 Illustrations

#### 15.2.1 Empty States Illustrations

**Types** :
- No Tracks : Music note illustration
- No Playlists : Playlist illustration
- No Messages : Message bubble illustration
- No Products : Shopping bag illustration
- No Results : Search illustration

**Style** : Minimal, line art, brand colors

#### 15.2.2 Onboarding Illustrations

**Types** :
- Welcome : Hero illustration
- Features : Feature highlights
- Success : Celebration illustration

**Style** : Friendly, modern, brand-aligned

### 15.3 Emojis

**Usage** :
- Chat messages (native emoji picker)
- Reactions (emoji reactions)
- Status indicators (custom status)

**Recommandation** : Utiliser emoji natifs (OS) pour meilleure performance

---

## 16. DOCUMENTATION & STORYBOOK

### 16.1 Structure Storybook

#### 16.1.1 Organisation

**Par Catégorie** :
```
Design System/
├── Foundation/
│   ├── Colors
│   ├── Typography
│   ├── Spacing
│   └── Shadows
├── Components/
│   ├── Buttons
│   ├── Inputs
│   ├── Cards
│   └── ...
├── Patterns/
│   ├── Forms
│   ├── Navigation
│   └── ...
└── Examples/
    ├── Dashboard
    ├── Chat
    └── ...
```

#### 16.1.2 Stories par Composant

**Template Story** :
- **Default** : État par défaut
- **Variants** : Tous les variants
- **States** : Tous les états
- **Sizes** : Toutes les tailles
- **Interactive** : Interactions (clicks, hovers)
- **Accessibility** : Tests ARIA, keyboard nav

**Exemple Button Story** :
```typescript
export default {
  title: 'Components/Button',
  component: Button,
  argTypes: {
    variant: { control: 'select', options: ['primary', 'secondary', 'ghost', 'danger'] },
    size: { control: 'select', options: ['sm', 'md', 'lg', 'xl'] },
    disabled: { control: 'boolean' },
    loading: { control: 'boolean' },
  },
};

export const Default = { args: { children: 'Button' } };
export const Variants = { /* all variants */ };
export const Sizes = { /* all sizes */ };
export const States = { /* all states */ };
```

### 16.2 Documentation Composants

#### 16.2.1 Props Documentation

**Chaque Composant Doit Documenter** :
- Props (type, default, required, description)
- Variants disponibles
- États supportés
- Exemples d'usage
- Accessibilité (ARIA, keyboard)
- Responsive behavior

#### 16.2.2 Code Examples

**Exemples Inclus** :
- Basic usage
- Advanced usage
- Composition patterns
- Customization
- Integration examples

### 16.3 Design Tokens Documentation

**Documenter** :
- Tous les design tokens (couleurs, spacing, typo)
- Usage guidelines
- Do's and Don'ts
- Examples visuels

---

## 17. TESTS & QUALITÉ

### 17.1 Tests Composants

#### 17.1.1 Tests Unitaires

**Coverage Requis** : ≥ 80%

**Tests par Composant** :
- Rendering (mount, unmount)
- Props validation
- Events (click, change, submit)
- States transitions
- Accessibility (ARIA, keyboard)

**Framework** : Vitest + React Testing Library

#### 17.1.2 Tests d'Intégration

**Tests de Flux** :
- Form submission flow
- Checkout flow
- Upload flow
- Chat message flow

**Framework** : Playwright / Cypress

### 17.2 Tests d'Accessibilité

#### 17.2.1 Tests Automatiques

**Outils** :
- `@axe-core/react` (automated a11y tests)
- `jest-axe` (unit test a11y)
- `pa11y` (CLI a11y testing)

**Tests Requis** :
- ARIA labels présents
- Keyboard navigation fonctionnelle
- Focus management correct
- Contraste couleurs (WCAG AAA)

#### 17.2.2 Tests Manuels

**Checklist** :
- Navigation clavier complète
- Screen reader (NVDA, JAWS, VoiceOver)
- Zoom 200% (lisibilité)
- Contraste couleurs validé

### 17.3 Tests Visuels

#### 17.3.1 Visual Regression

**Outils** : Chromatic / Percy

**Tests** :
- Screenshots tous variants
- Comparaison avant/après
- Responsive breakpoints

#### 17.3.2 Cross-Browser

**Browsers Testés** :
- Chrome (latest)
- Firefox (latest)
- Safari (latest)
- Edge (latest)

**Mobile** :
- iOS Safari
- Chrome Android

### 17.4 Performance Tests

#### 17.4.1 Metrics

**Targets** :
- First Contentful Paint (FCP) : < 1.5s
- Largest Contentful Paint (LCP) : < 2.5s
- Time to Interactive (TTI) : < 3.5s
- Cumulative Layout Shift (CLS) : < 0.1

**Outils** : Lighthouse, WebPageTest

#### 17.4.2 Bundle Size

**Targets** :
- Design System bundle : < 200KB (gzipped)
- Individual component : < 10KB (gzipped)

**Outils** : Bundle Analyzer

---

## 18. MIGRATION & ADOPTION

### 18.1 Stratégie de Migration

#### 18.1.1 Approche Progressive

**Phase 1 : Foundation** (Semaines 1-4)
- Implémenter composants foundation
- Migrer pages critiques (auth, dashboard)
- Valider avec équipe

**Phase 2 : Domaines Core** (Semaines 5-12)
- Migrer audio components
- Migrer chat components
- Migrer marketplace components

**Phase 3 : Domaines Secondaires** (Semaines 13-20)
- Migrer social components
- Migrer admin components
- Migrer analytics components

**Phase 4 : Finalisation** (Semaines 21+)
- Nettoyer code legacy
- Documentation complète
- Training équipe

#### 18.1.2 Coexistence Legacy

**Période de Transition** :
- Design System v3 + Legacy components
- Wrapper components pour compatibilité
- Migration progressive feature par feature

### 18.2 Adoption & Training

#### 18.2.1 Documentation

**Ressources** :
- Storybook (composants, exemples)
- Guide d'utilisation
- Best practices
- Migration guide

#### 18.2.2 Training Équipe

**Sessions** :
- Introduction Design System v3
- Workshop composants
- Code review guidelines
- Accessibilité training

### 18.3 Governance

#### 18.3.1 Processus de Changement

**Nouveau Composant** :
1. RFC (Request for Comments)
2. Design review
3. Implementation
4. Documentation
5. Release

**Modification Composant** :
1. Impact analysis
2. Breaking changes review
3. Migration guide
4. Deprecation notice (si nécessaire)

#### 18.3.2 Code Review

**Checklist** :
- Utilise Design System v3
- Accessibilité validée
- Tests présents (≥ 80% coverage)
- Documentation à jour
- Storybook stories ajoutées

---

## 19. PERFORMANCE & OPTIMISATION

### 19.1 Optimisations Composants

#### 19.1.1 Code Splitting

**Stratégie** :
- Lazy load composants lourds (AudioPlayer, Chart)
- Dynamic imports pour variants
- Tree shaking (imports spécifiques)

#### 19.1.2 Memoization

**React.memo** :
- Composants purs (même props = même output)
- Éviter re-renders inutiles

**useMemo / useCallback** :
- Calculs coûteux
- Callbacks stables
- Éviter re-création objets/fonctions

### 19.2 Optimisations Rendering

#### 19.2.1 Virtualization

**Composants Virtualisés** :
- `MessageList` (chat messages)
- `TrackList` (long lists)
- `UserList` (followers, following)
- `ProductGrid` (marketplace)

**Library** : `react-window` / `react-virtual`

#### 19.2.2 Lazy Loading

**Images** :
- Lazy load images (Intersection Observer)
- Placeholder (blur, skeleton)
- Responsive images (srcset)

**Composants** :
- Lazy load modals
- Lazy load heavy components

### 19.3 Optimisations Audio

#### 19.3.1 Streaming

**Stratégie** :
- Progressive loading (chunks)
- Preload next track
- Buffer management

#### 19.3.2 Waveform

**Optimisation** :
- WebGL rendering (si possible)
- Canvas optimization
- Debounce updates (60 FPS max)

### 19.4 Bundle Optimization

#### 19.4.1 Tree Shaking

**Configuration** :
- ES modules (import/export)
- Side-effect free
- Unused code elimination

#### 19.4.2 Compression

**Gzip / Brotli** :
- Assets compression
- Text compression
- Image optimization (WebP, AVIF)

---

## 20. ROADMAP DÉTAILLÉE

### 20.1 Timeline Complète

#### 20.1.1 Q1 (Mois 1-3)

**Mois 1** :
- ✅ Phase 1: Foundation (10 composants)
- ✅ Phase 2: Audio Core (7 composants)
- ✅ Setup Storybook
- ✅ Documentation initiale

**Mois 2** :
- ✅ Phase 3: Auth & Forms (6 composants)
- ✅ Phase 4: Chat Core (8 composants)
- ✅ Tests accessibilité Phase 1-2
- ✅ Migration pages critiques

**Mois 3** :
- ✅ Phase 5: Marketplace (7 composants)
- ✅ Phase 6: Social Core (7 composants)
- ✅ Tests visuels
- ✅ Performance optimization

#### 20.1.2 Q2 (Mois 4-6)

**Mois 4** :
- ✅ Phase 7: Admin Core (5 composants)
- ✅ P2 Components (début, 15 composants)
- ✅ Training équipe
- ✅ Migration continue

**Mois 5-6** :
- ✅ P2 Components (suite, 35 composants)
- ✅ Documentation complète
- ✅ Tests cross-browser
- ✅ Performance tuning

#### 20.1.3 Q3-Q4 (Mois 7-10)

**Mois 7-8** :
- ✅ P3 Components (70 composants)
- ✅ Advanced features
- ✅ Final migration

**Mois 9-10** :
- ✅ P4 Components (65 composants)
- ✅ Final polish
- ✅ Documentation finale
- ✅ Release v3.0.0

### 20.2 Milestones

| Milestone | Date Cible | Critères |
|-----------|------------|----------|
| **M1: Foundation Ready** | Mois 1 | 10 composants foundation + Storybook |
| **M2: Core Domains** | Mois 3 | Audio + Chat + Marketplace + Social |
| **M3: MVP Complete** | Mois 6 | P0 + P1 composants (80 composants) |
| **M4: Full System** | Mois 10 | Tous composants (250 composants) |

---

## 21. ANNEXES

### 21.1 Références

**Documents ORIGIN_ Analysés** :
- `ORIGIN_UI_UX_SYSTEM.md` : Design tokens, composants
- `ORIGIN_FEATURES_REGISTRY.md` : 600 features détaillées
- `ORIGIN_MASTER_ARCHITECTURE.md` : Architecture frontend
- `ORIGIN_API_SPECIFICATION.md` : Endpoints → UI mapping
- `ORIGIN_BUSINESS_LOGIC.md` : Workflows → UI flows
- `ORIGIN_CODE_STANDARDS.md` : Standards React/TypeScript

**Fichiers Features** :
- `veza_full_features_list.md` : Liste exhaustive 600 features

### 21.2 Glossaire

**Termes Techniques** :
- **Design Token** : Valeur de design réutilisable (couleur, spacing, typo)
- **Component Variant** : Variation d'un composant (size, state, type)
- **State Machine** : Machine à états (transitions valides)
- **WCAG AAA** : Web Content Accessibility Guidelines niveau AAA
- **Responsive** : Adaptation à différentes tailles d'écran
- **Dark Mode** : Mode sombre (thème alternatif)

### 21.3 Contacts

**Équipe Design System** :
- **Design Lead** : [À définir]
- **Frontend Lead** : [À définir]
- **Product Owner** : [À définir]

---

**Fin du Rapport**

**Document généré le** : 2025-01-27  
**Version** : 1.0.0  
**Prochaine révision** : Après validation équipe
