/* Modern Technical Dark Theme (inspired by Gamescope/Next.js/Vercel) */
:root {
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #111111;
    --color-bg-tertiary: #1c1c1c;

    --color-text-primary: #ededed;
    --color-text-secondary: #a1a1a1;
    --color-text-dim: #666666;

    --color-accent: #0070f3;
    /* Vercel Blue - very techy */
    --color-accent-light: #3291ff;
    --color-accent-purple: #7928ca;
    --color-accent-cyan: #50e3c2;

    --border-color: #333333;
    --border-hover: #555555;

    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', Menlo, Consolas, monospace;

    --card-radius: 8px;
    --transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
}

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

body {
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    font-family: var(--font-heading);
    line-height: 1.5;
    overflow-x: hidden;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-container {
    padding: 4rem 0;
    border-bottom: 1px solid var(--border-color);
}

.section-container:last-child {
    border-bottom: none;
}

.section-header {
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.section-header p {
    color: var(--color-text-secondary);
    font-size: 1.1rem;
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    height: 64px;
    display: flex;
    align-items: center;
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    width: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--color-text-primary);
}

.logo-icon i {
    color: var(--color-text-primary);
}

/* Minimal white icon */

.version-badge {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    background: var(--color-bg-tertiary);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--color-text-secondary);
    border: 1px solid var(--border-color);
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--color-text-primary);
}

.github-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Hero */
.hero-section {
    padding: 8rem 0 6rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border-color);
}

.hero-background-glow {
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translate(-50%, 0);
    width: 1000px;
    height: 1000px;
    background: radial-gradient(circle, rgba(0, 112, 243, 0.15) 0%, rgba(10, 10, 10, 0) 60%);
    pointer-events: none;
    z-index: -1;
}

.venue-badge {
    display: inline-block;
    margin-bottom: 1.25rem;
    padding: 0.35rem 1rem;
    border-radius: 999px;
    background: linear-gradient(135deg, #0070f3 0%, #00b4d8 100%);
    color: #fff;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.hero-title {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.25;
    margin-bottom: 1.75rem;
    max-width: 860px;
    margin-left: auto;
    margin-right: auto;
    text-transform: uppercase;
}

.gradient-text {
    background: linear-gradient(90deg, #fff, #999);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.author-block {
    margin-bottom: 2rem;
}

.author-names {
    font-size: 1.05rem;
    color: var(--color-text-primary);
    margin-bottom: 0.4rem;
}

.author-names sup {
    font-size: 0.7em;
    color: var(--color-accent-light);
}

.author-affiliations {
    font-size: 0.92rem;
    color: var(--color-text-secondary);
    margin-bottom: 0.3rem;
}

.author-affiliations sup {
    font-size: 0.7em;
    color: var(--color-accent-light);
}

.author-note {
    font-size: 0.8rem;
    color: var(--color-text-dim);
    font-style: italic;
}

.author-note sup {
    font-size: 0.75em;
}

.hero-actions {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}

.action-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 1.25rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: opacity 0.2s, transform 0.15s;
}

.action-btn:hover {
    opacity: 0.85;
    transform: translateY(-1px);
}

.arxiv-btn {
    background: #b31b1b;
    color: #fff;
}

.dataset-btn {
    background: #0070f3;
    color: #fff;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto 3rem;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    font-family: var(--font-mono);
}

.stat-box {
    background: var(--color-bg-secondary);
    border: 1px solid var(--border-color);
    padding: 1rem 2rem;
    border-radius: var(--card-radius);
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent-light);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--color-text-dim);
    text-transform: uppercase;
}

/* Analysis / Plot */
.plot-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.plot-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    padding: 1rem;
    max-width: 100%;
}

.plot-card img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 4px;
    /* Slight inner radius */
}

.plot-caption {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    max-width: 800px;
    text-align: center;
    padding: 1rem;
    border-left: 2px solid var(--color-accent);
    background: rgba(0, 112, 243, 0.05);
    /* Slight tint */
}

/* Metadata Visualizations */
.viz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.25rem;
}

.viz-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    overflow: hidden;
    transition: var(--transition);
}

.viz-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.viz-card a {
    display: block;
    text-decoration: none;
}

.viz-card img {
    width: 100%;
    height: auto;
    object-fit: contain;
    display: block;
    background: #fff;
}

.viz-card-body {
    padding: 0.75rem 1rem 1rem;
}

.viz-card-caption {
    font-size: 0.85rem;
    color: var(--color-text-primary);
    line-height: 1.5;
}

.viz-card-caption strong,
.viz-card-caption::first-line {
    font-weight: 600;
}

.metadata-file-links {
    margin-top: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.metadata-file-link {
    background: var(--color-bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 999px;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    padding: 0.45rem 0.8rem;
    transition: var(--transition);
}

.metadata-file-link:hover {
    color: var(--color-text-primary);
    border-color: var(--border-hover);
}


/* Gallery */
.controls-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 2rem;
    align-items: flex-end;
    background: var(--color-bg-secondary);
    padding: 1rem;
    border-radius: var(--card-radius);
    border: 1px solid var(--border-color);
}

.filter-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--color-text-dim);
    margin-bottom: 0.5rem;
    font-family: var(--font-mono);
}

.toggle-group {
    display: flex;
    background: var(--color-bg-tertiary);
    padding: 2px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.toggle-btn {
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    padding: 6px 16px;
    border-radius: 4px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.toggle-btn:hover {
    color: var(--color-text-primary);
}

.toggle-btn.active {
    background: var(--color-bg-primary);
    /* Inset look */
    color: var(--color-text-primary);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.select-wrapper select {
    background: var(--color-bg-primary);
    border: 1px solid var(--border-color);
    color: var(--color-text-primary);
    padding: 8px 12px;
    border-radius: 6px;
    min-width: 160px;
    font-family: var(--font-heading);
    cursor: pointer;
}

.select-wrapper select:focus {
    outline: none;
    border-color: var(--color-text-secondary);
}

/* Grid */
.grid-layout {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 1.5rem;
}

.video-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    overflow: hidden;
    transition: var(--transition);
}

.video-card:hover {
    border-color: var(--color-text-secondary);
    transform: translateY(-2px);
}

.video-player-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    /* 16:9 */
    background: #000;
}

.video-player-wrapper video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.card-info {
    padding: 1.25rem;
}

.card-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.tag {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    padding: 3px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
}

.tag.ps5 {
    background: rgba(0, 48, 135, 0.3);
    color: #8ab4f8;
    border: 1px solid rgba(0, 48, 135, 0.5);
}

.tag.ugc {
    background: rgba(255, 69, 0, 0.2);
    color: #ff8a65;
    border: 1px solid rgba(255, 69, 0, 0.4);
}

.tag.meta {
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    border: 1px solid var(--border-color);
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--color-text-primary);
}

.card-metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    margin-top: 1rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.8rem;
    font-family: var(--font-mono);
    color: var(--color-text-secondary);
}

.metric i {
    color: var(--color-text-dim);
    margin-right: 6px;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 3rem 0;
    margin-top: 4rem;
    background: var(--color-bg-secondary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer h4 {
    color: var(--color-text-primary);
    margin-bottom: 0.5rem;
}

.footer p {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

.footer-license {
    margin-top: 1.5rem;
    padding: 0.85rem 1.1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    font-size: 0.82rem;
    color: var(--color-text-secondary);
    line-height: 1.55;
    display: flex;
    gap: 0.6rem;
    align-items: flex-start;
}

.footer-license i {
    margin-top: 0.1rem;
    color: var(--color-accent-light);
    flex-shrink: 0;
}

.footer-license strong {
    color: var(--color-text-primary);
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .controls-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
}