:root {
    --bg-base: #000000;
    --bg-surface: #0a0a0a;
    --bg-surface-hover: #111111;
    --border-color: #222222;
    --border-highlight: #ffffff;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --text-tertiary: #555555;
    --accent-color: #ffffff;
    --accent-hover: #ffffff;
    --radius-md: 4px;
    --radius-lg: 8px;
    --transition-fast: 0.2s cubic-bezier(0, 0, 0, 1);
}

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

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background-color: var(--bg-base);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
    overflow-x: hidden;
}

/* Clean Video Background */
.ambient-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    background-color: var(--bg-base);
    object-fit: cover;
    opacity: 0.6; /* Dim it slightly so content is readable */
}

.layout {
    display: flex;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--bg-base);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.sidebar-header h1 {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.nav-links {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    padding: 10px 12px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: 1px solid transparent;
    display: flex;
    align-items: center;
}

.nav-item:hover {
    background-color: var(--bg-surface);
    color: var(--text-primary);
}

.nav-item.active {
    background-color: var(--bg-surface-hover);
    color: var(--text-primary);
    border-color: var(--border-color);
}

/* Main Content */
.content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.content-header {
    padding: 24px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 10;
    background: rgba(0, 0, 0, 0.9);
    border-bottom: 1px solid var(--border-color);
}

.content-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    text-transform: capitalize;
}

.search-input {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 10px 16px;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 0.9rem;
    width: 240px;
    transition: all var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--border-highlight);
    background-color: var(--bg-surface-hover);
}

/* Grid */
.assets-grid {
    padding: 40px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 24px;
}

.asset-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 16px;
    display: flex;
    flex-direction: column;
    transition: all var(--transition-fast);
    text-decoration: none;
    position: relative;
    opacity: 0;
    transform: translateY(10px);
    animation: fadeUp 0.3s forwards;
}

.asset-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-highlight);
    background: var(--bg-surface-hover);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.asset-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--bg-base);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    margin-bottom: 16px;
    flex-shrink: 0;
}

.asset-preview-container {
    width: 100%;
    height: 140px;
    background: var(--bg-base);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
    padding: 12px;
}

.asset-preview {
    width: 100%;
    height: 100%;
    object-fit: contain;
    image-rendering: pixelated; 
}

.asset-info {
    flex: 1;
}

.asset-name {
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 4px;
    word-break: break-all;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.4;
}

.asset-meta {
    color: var(--text-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}

.download-action {
    margin-top: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 600;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
    transition: color var(--transition-fast);
}

.download-action svg {
    color: var(--text-primary);
    transition: transform var(--transition-fast);
}

.asset-card:hover .download-action svg {
    transform: translateY(2px);
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 100px 20px;
    text-align: center;
    color: var(--text-secondary);
}

.empty-state svg {
    margin-bottom: 16px;
    opacity: 0.5;
    width: 48px;
    height: 48px;
}

.empty-state h3 {
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 0.9rem;
}

.empty-state.hidden {
    display: none;
}

/* Skeletons */
.skeleton {
    background: linear-gradient(90deg, #111 25%, #222 50%, #111 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: var(--radius-md);
}

.skeleton-nav {
    height: 38px;
    margin-bottom: 4px;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Full Screen Loader */
.loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: var(--bg-base);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

.loader-overlay.fade-out {
    opacity: 0;
    visibility: hidden;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--text-primary);
    border-radius: 50%;
    animation: spin 1s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}