:root {
    --bg-primary: #18181b;
    --bg-secondary: #1e1e24;
    --bg-card: #0f0f12;
    --bg-card-hover: #1f1f23;
    --border-color: #27272a;
    --border-color-hover: #3f3f46;
    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --accent-gradient: linear-gradient(135deg, #3b82f6 0%, #6366f1 50%, #8b5cf6 100%);
    --accent-orange: #3b82f6;
    --accent-pink: #6366f1;
    --accent-purple: #8b5cf6;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.15);
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Gradient Background */
.gradient-bg {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 600px;
    background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(59, 130, 246, 0.12), transparent),
                radial-gradient(ellipse 60% 40% at 80% 0%, rgba(139, 92, 246, 0.08), transparent),
                radial-gradient(ellipse 60% 40% at 20% 0%, rgba(99, 102, 241, 0.08), transparent);
    pointer-events: none;
    z-index: 0;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 24px;
    position: relative;
    z-index: 1;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 48px;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 100px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border-radius: 8px;
    color: white;
}

.logo-icon svg {
    width: 18px;
    height: 18px;
}

.logo span {
    font-weight: 600;
    font-size: 16px;
}

.title {
    font-size: clamp(28px, 5vw, 42px);
    font-weight: 700;
    margin-bottom: 12px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

/* Search Bar */
.search-bar {
    max-width: 500px;
    margin: 0 auto 32px;
    position: relative;
}

.search-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-muted);
    pointer-events: none;
}

.search-bar input {
    width: 100%;
    padding: 14px 16px 14px 48px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 15px;
    font-family: inherit;
    transition: all var(--transition-fast);
}

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

.search-bar input:focus {
    outline: none;
    border-color: var(--accent-orange);
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

/* Stats */
.stats {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 40px;
}

.stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 16px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.stat-number {
    font-size: 24px;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
}

/* Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

/* Card */
.card {
    position: relative;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: 1px solid var(--border-color);
}

.card:hover {
    transform: translateY(-4px);
    border-color: var(--border-color-hover);
    box-shadow: var(--shadow-lg);
}

.card-preview {
    aspect-ratio: 16 / 10;
    position: relative;
    overflow: hidden;
    background: var(--bg-secondary);
}

.card-preview-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.card:hover .card-preview-image {
    transform: scale(1.05);
}

.card-preview-fallback {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-preview-gradient {
    position: absolute;
    inset: 20px;
    border-radius: var(--radius-lg);
    background: var(--accent-gradient);
    opacity: 0.9;
    transition: all var(--transition-normal);
}

.card:hover .card-preview-gradient {
    transform: scale(1.05);
    opacity: 1;
}

.card-preview-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 48px;
    height: 48px;
    color: rgba(255, 255, 255, 0.8);
    z-index: 1;
}

.card-preview-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 4px 10px;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    border-radius: 100px;
    font-size: 11px;
    font-weight: 600;
    color: white;
    z-index: 2;
}

.card-content {
    padding: 16px 20px 20px;
}

.card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.card-size {
    font-size: 13px;
    color: var(--text-muted);
}

.card-format {
    font-size: 11px;
    font-weight: 600;
    color: var(--accent-orange);
    padding: 2px 8px;
    background: rgba(249, 115, 22, 0.1);
    border-radius: 4px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    border: none;
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

.btn svg {
    width: 18px;
    height: 18px;
}

.btn-primary {
    width: 100%;
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(59, 130, 246, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-color-hover);
}

/* Loading */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    color: var(--text-muted);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-orange);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

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

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 80px 20px;
    color: var(--text-muted);
}

.empty-state svg {
    width: 64px;
    height: 64px;
    margin-bottom: 16px;
    opacity: 0.5;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.95) translateY(20px);
    transition: all var(--transition-normal);
}

.modal.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 10;
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.7);
    transform: scale(1.1);
}

.modal-close svg {
    width: 20px;
    height: 20px;
}

.modal-header {
    padding: 24px 24px 0;
}

.modal-header h2 {
    font-size: 18px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.modal-body {
    padding: 24px;
}

.preview-placeholder {
    position: relative;
    aspect-ratio: 16 / 10;
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
}

.preview-gradient {
    position: absolute;
    inset: 0;
    background: var(--accent-gradient);
    opacity: 0.3;
}

.preview-icon {
    width: 64px;
    height: 64px;
    color: var(--text-secondary);
    position: relative;
    z-index: 1;
    margin-bottom: 16px;
}

.preview-placeholder p {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    position: relative;
    z-index: 1;
}

.preview-note {
    font-size: 13px;
    color: var(--text-muted);
    position: relative;
    z-index: 1;
    margin-top: 8px;
}

.modal-footer {
    padding: 0 24px 24px;
    display: flex;
    gap: 12px;
}

.modal-footer .btn-secondary {
    flex: 1;
}

.modal-footer .btn-primary {
    flex: 2;
}

/* Footer */
.footer {
    text-align: center;
    padding: 40px 24px;
    color: var(--text-muted);
    font-size: 13px;
    position: relative;
    z-index: 1;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 24px 16px;
    }
    
    .grid {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
        gap: 16px;
    }
    
    .stats {
        flex-direction: column;
        align-items: stretch;
    }
    
    .stat-card {
        flex-direction: row;
        justify-content: space-between;
    }
    
    .modal-content {
        max-width: 100%;
    }
    
    .modal-footer {
        flex-direction: column;
    }
    
    .modal-footer .btn-secondary,
    .modal-footer .btn-primary {
        flex: unset;
        width: 100%;
    }
}

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

.card {
    animation: fadeInUp 0.5s ease backwards;
}

.card:nth-child(1) { animation-delay: 0.05s; }
.card:nth-child(2) { animation-delay: 0.1s; }
.card:nth-child(3) { animation-delay: 0.15s; }
.card:nth-child(4) { animation-delay: 0.2s; }
.card:nth-child(5) { animation-delay: 0.25s; }
.card:nth-child(6) { animation-delay: 0.3s; }
.card:nth-child(7) { animation-delay: 0.35s; }
.card:nth-child(8) { animation-delay: 0.4s; }
.card:nth-child(9) { animation-delay: 0.45s; }