/* song-details.css  */

/* ========================================
   Main Layout
   ======================================== */
.song-details {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 2.5rem;
    background: white;
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.left-column {
    display: flex;
    flex-direction: column;
    background-color: #f8fafc;
}

/* ========================================
   Album Cover
   ======================================== */
.album-cover {
    background-color: #e2e8f0;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    aspect-ratio: 1/1;
    position: relative;
}

.album-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.album-cover:hover img {
    transform: scale(1.08);
}

.album-cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.2) 0%, transparent 100%);
    pointer-events: none;
}

/* ========================================
   Preview Section
   ======================================== */
.preview-section {
    padding: 1.5rem;
    border-bottom: 1px solid #e2e8f0;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.sidebar-section-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1e293b;
    display: flex;
    align-items: center;
}

.sidebar-section-title i {
    margin-right: 0.5rem;
    color: #3b82f6;
}

.preview-player {
    text-align: center;
}

.preview-audio {
    width: 100%;
    max-width: 280px;
    margin: 0 auto;
    border-radius: 2rem;
}

.preview-audio:focus {
    outline: none;
}

.preview-note {
    font-size: 0.7rem;
    color: #64748b;
    margin-top: 0.5rem;
    text-align: center;
}

/* ========================================
   Download Section
   ======================================== */
.download-section {
    padding: 1.75rem;
    background-color: #f1f5f9;
    border-top: 1px solid #e2e8f0;
}

.download-links {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    margin-top: 1rem;
}

.download-link {
    display: inline-flex;
    align-items: center;
    padding: 0.85rem 1.5rem;
    background-color: #3b82f6;
    color: white;
    text-decoration: none;
    border-radius: 0.5rem;
    font-weight: 500;
    transition: all 0.25s;
    width: 100%;
    justify-content: center;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.download-link:hover {
    background-color: #2563eb;
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(59, 130, 246, 0.15);
}

.download-link i {
    margin-right: 0.75rem;
    font-size: 1.1rem;
}

.no-downloads {
    color: #64748b;
    text-align: center;
    font-style: italic;
    padding: 1rem;
}

/* ========================================
   Sidebar Info Section
   ======================================== */
.sidebar-section {
    padding: 1.75rem;
    border-bottom: 1px solid #e2e8f0;
}

.info-item {
    margin-bottom: 0.75rem;
}

.info-label {
    font-weight: 600;
    color: #64748b;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.25rem;
}

.info-value {
    color: #1e293b;
    font-size: 1.05rem;
}

/* ========================================
   Song Info Section
   ======================================== */
.song-info {
    padding: 2.5rem;
}

.song-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #1e293b;
    line-height: 1.2;
}

.song-artist {
    font-size: 1.25rem;
    color: #475569;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
}

.song-artist i {
    margin-right: 0.5rem;
    opacity: 0.7;
}

/* ========================================
   Album Info Section
   ======================================== */
.album-info {
    background-color: #f8fafc;
    padding: 1.75rem;
    border-radius: 0.5rem;
    margin-bottom: 2rem;
    line-height: 1.8;
    border-left: 4px solid #3b82f6;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 2.5rem 0 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid #e2e8f0;
    display: inline-block;
}

/* ========================================
   Track Listing with Preview Buttons
   ======================================== */
.tracks-list {
    list-style-type: none;
    padding: 0;
}

.track-item {
    padding: 0.85rem 0;
    border-bottom: 1px solid #f1f5f9;
    display: flex;
    align-items: center;
    transition: background-color 0.2s;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.track-item:hover {
    background-color: #f8fafc;
    padding-left: 0.5rem;
}

.track-item:last-child {
    border-bottom: none;
}

.track-number {
    font-weight: 600;
    color: #64748b;
    min-width: 2.5rem;
    display: inline-block;
}

.track-title {
    flex: 1;
    color: #1e293b;
}

/* Track Preview Button */
.track-preview-btn {
    background: #3b82f6;
    color: white;
    border: none;
    border-radius: 2rem;
    padding: 0.35rem 1rem;
    cursor: pointer;
    font-size: 0.75rem;
    font-weight: 500;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    white-space: nowrap;
}

.track-preview-btn:hover {
    background: #2563eb;
    transform: scale(1.02);
}

.track-preview-btn.playing {
    background: #dc2626;
}

.track-preview-btn.playing:hover {
    background: #b91c1c;
}

.track-preview-btn i {
    font-size: 0.7rem;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 992px) {
    .song-details {
        grid-template-columns: 1fr;
        max-width: 700px;
        margin: 0 auto;
    }
    
    .song-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .song-info {
        padding: 1.5rem;
    }
    
    .song-title {
        font-size: 1.75rem;
    }
    
    .sidebar-section,
    .download-section,
    .preview-section {
        padding: 1.25rem;
    }
    
    .preview-audio {
        max-width: 100%;
    }
    
    .section-title {
        font-size: 1.25rem;
    }
}

@media (max-width: 640px) {
    .track-item {
        flex-wrap: wrap;
    }
    
    .track-number {
        min-width: 2rem;
    }
    
    .track-title {
        flex: 1;
        min-width: 120px;
        font-size: 0.9rem;
    }
    
    .track-preview-btn {
        padding: 0.3rem 0.8rem;
        font-size: 0.7rem;
    }
}

@media (max-width: 480px) {
    .song-title {
        font-size: 1.5rem;
    }
    
    .song-artist {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.1rem;
    }
    
    .track-number {
        width: 1.8rem;
        font-size: 0.85rem;
    }
    
    .track-title {
        font-size: 0.85rem;
    }
    
    .track-preview-btn {
        padding: 0.25rem 0.6rem;
        font-size: 0.65rem;
    }
    
    .info-label {
        font-size: 0.75rem;
    }
    
    .info-value {
        font-size: 0.9rem;
    }
}

/* ========================================
   Animation Effects
   ======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.song-details {
    animation: fadeInUp 0.4s ease-out;
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.track-preview-btn.playing i {
    animation: pulse 1s ease-in-out infinite;
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    .song-details,
    .track-preview-btn.playing i {
        animation: none;
    }
    
    .album-cover img,
    .download-link,
    .track-preview-btn {
        transition: none;
    }
    
    .album-cover:hover img {
        transform: none;
    }
    
    .download-link:hover {
        transform: none;
    }
}

/* ========================================
   Accessibility Focus Styles
   ======================================== */
.download-link:focus,
.track-preview-btn:focus,
.preview-audio:focus,
.sidebar-section-title:focus {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
}

.track-preview-btn:focus-visible {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
}

/* ========================================
   Loading State
   ======================================== */
.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 2rem;
    height: 2rem;
    border: 2px solid #e2e8f0;
    border-top-color: #3b82f6;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* ========================================
   Error and Empty States
   ======================================== */
.error-message {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
    padding: 1rem 1.25rem;
    border-radius: 0.5rem;
    margin: 1rem 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-left: 4px solid #dc2626;
}

.error-message i {
    font-size: 1.25rem;
}

.empty-state {
    text-align: center;
    padding: 3rem 2rem;
    color: #64748b;
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #cbd5e1;
}

.empty-state h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: #475569;
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
    .header,
    .footer,
    .search-container,
    .preview-section,
    .download-section,
    .back-to-top {
        display: none;
    }
    
    .song-details {
        box-shadow: none;
        grid-template-columns: 1fr;
    }
    
    .left-column {
        background: none;
    }
    
    .album-info {
        background: none;
        border-left: none;
        padding: 0;
    }
    
    .song-title {
        font-size: 1.8rem;
    }
}