/**
 * Music Library - Variables CSS et styles de base
 * 
 * Ce fichier contient les variables CSS spécifiques à la bibliothèque musicale
 * et les styles de base pour les composants musicaux.
 * 
 * @module assets/css/music
 * @version 1.0.0
 */

:root {
    /* Couleurs spécifiques musique */
    --music-primary: #00d4ff;
    --music-secondary: #6366f1;
    --music-accent: #f59e0b;
    
    /* Backgrounds musique */
    --music-bg-primary: #0f172a;
    --music-bg-secondary: #1e293b;
    --music-bg-card: #334155;
    --music-bg-hover: #475569;
    
    /* Text musique */
    --music-text-primary: #f1f5f9;
    --music-text-secondary: #94a3b8;
    --music-text-muted: #64748b;
    
    /* Borders */
    --music-border: #374151;
    --music-border-light: #475569;
    
    /* Shadows */
    --music-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --music-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --music-shadow-lg: 0 8px 16px rgba(0, 212, 255, 0.2);
    
    /* Spacing */
    --music-spacing-xs: 4px;
    --music-spacing-sm: 8px;
    --music-spacing-md: 12px;
    --music-spacing-lg: 20px;
    --music-spacing-xl: 32px;
    
    /* Border radius */
    --music-radius-sm: 4px;
    --music-radius: 8px;
    --music-radius-lg: 12px;
    
    /* Transitions */
    --music-transition: 0.2s ease;
    --music-transition-slow: 0.3s ease;
}

/* Track Card */
.track-card {
    background: var(--music-bg-card);
    border: 1px solid var(--music-border);
    border-radius: var(--music-radius);
    padding: var(--music-spacing-md);
    display: flex;
    align-items: center;
    gap: var(--music-spacing-md);
    cursor: pointer;
    transition: all var(--music-transition);
}

.track-card:hover {
    background: var(--music-bg-hover);
    transform: translateY(-2px);
    box-shadow: var(--music-shadow-lg);
}

.track-cover {
    width: 48px;
    height: 48px;
    border-radius: var(--music-radius-sm);
    object-fit: cover;
    background: var(--music-bg-secondary);
}

.track-info {
    flex: 1;
    min-width: 0;
}

.track-title {
    font-weight: 600;
    color: var(--music-text-primary);
    font-size: 0.875rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 2px;
}

.track-artist {
    font-size: 0.75rem;
    color: var(--music-text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.track-duration {
    font-size: 0.75rem;
    color: var(--music-text-muted);
    margin-left: var(--music-spacing-sm);
}

.track-actions {
    display: flex;
    gap: var(--music-spacing-sm);
    opacity: 0;
    transition: opacity var(--music-transition);
}

.track-card:hover .track-actions {
    opacity: 1;
}

.track-action-btn {
    background: var(--music-bg-secondary);
    border: 1px solid var(--music-border);
    color: var(--music-text-secondary);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--music-transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
}

.track-action-btn:hover {
    background: var(--music-primary);
    border-color: var(--music-primary);
    color: white;
    transform: scale(1.1);
}

.track-action-btn.favorite.active {
    background: #ef4444;
    border-color: #ef4444;
    color: white;
}

/* Loading State */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--music-spacing-xl);
    color: var(--music-text-secondary);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--music-border);
    border-top-color: var(--music-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--music-spacing-md);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--music-spacing-xl);
    color: var(--music-text-secondary);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: var(--music-spacing-md);
}

.empty-state-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--music-text-primary);
    margin-bottom: var(--music-spacing-sm);
}

.empty-state-text {
    font-size: 0.875rem;
}

/* Alphabet Navigation */
.alphabet-nav {
    display: flex;
    gap: var(--music-spacing-xs);
    flex-wrap: wrap;
    margin-bottom: var(--music-spacing-lg);
    padding: var(--music-spacing-md);
    background: var(--music-bg-secondary);
    border-radius: var(--music-radius);
}

.alphabet-btn {
    background: transparent;
    border: 1px solid var(--music-border);
    color: var(--music-text-secondary);
    width: 32px;
    height: 32px;
    border-radius: var(--music-radius-sm);
    cursor: pointer;
    transition: all var(--music-transition);
    font-size: 0.875rem;
    font-weight: 600;
}

.alphabet-btn:hover {
    background: var(--music-bg-hover);
    color: var(--music-text-primary);
}

.alphabet-btn.active {
    background: var(--music-primary);
    border-color: var(--music-primary);
    color: white;
}

/* Buttons */
.btn-reindex {
    background: var(--music-bg-secondary);
    border: 1px solid var(--music-border);
    color: var(--music-text-secondary);
    padding: var(--music-spacing-sm) var(--music-spacing-md);
    border-radius: var(--music-radius);
    cursor: pointer;
    transition: all var(--music-transition);
    display: flex;
    align-items: center;
    gap: var(--music-spacing-sm);
    font-size: 0.875rem;
}

.btn-reindex:hover {
    background: var(--music-primary);
    border-color: var(--music-primary);
    color: white;
}

/* Search */
.search-container {
    position: relative;
    flex: 1;
}

.search-input {
    width: 100%;
    background: var(--music-bg-secondary);
    border: 1px solid var(--music-border);
    color: var(--music-text-primary);
    padding: var(--music-spacing-md) var(--music-spacing-xl);
    padding-right: 40px;
    border-radius: var(--music-radius);
    font-size: 0.875rem;
    transition: all var(--music-transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--music-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.search-input::placeholder {
    color: var(--music-text-muted);
}

.search-icon {
    position: absolute;
    right: var(--music-spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--music-text-muted);
    pointer-events: none;
}

/* Grid Layout */
.tracks-grid {
    display: grid;
    gap: var(--music-spacing-md);
}

/* Artist/Album Cards */
.artist-card,
.album-card {
    background: var(--music-bg-card);
    border: 1px solid var(--music-border);
    border-radius: var(--music-radius);
    padding: var(--music-spacing-lg);
    text-align: center;
    cursor: pointer;
    transition: all var(--music-transition);
}

.artist-card:hover,
.album-card:hover {
    background: var(--music-bg-hover);
    transform: translateY(-4px);
    box-shadow: var(--music-shadow-lg);
}

.artist-avatar,
.album-cover-large {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    margin: 0 auto var(--music-spacing-md);
    background: var(--music-bg-secondary);
    object-fit: cover;
}

.album-cover-large {
    border-radius: var(--music-radius);
}

.artist-name,
.album-name {
    font-weight: 600;
    color: var(--music-text-primary);
    font-size: 1rem;
    margin-bottom: var(--music-spacing-xs);
}

.artist-stats,
.album-artist {
    font-size: 0.75rem;
    color: var(--music-text-secondary);
}