/* ViTok-v2 Website Styles */
:root {
    --bg-color: #ffffff;
    --surface-color: #f8f9fa;
    --border-color: #e1e4e8;
    --text-primary: #24292f;
    --text-secondary: #57606a;
    --accent-color: #0969da;
    --accent-color-dim: #0550ae;
    --success-color: #1a7f37;
    --warning-color: #bf8700;
    --sidebar-width: 260px;
    --sidebar-bg: #f6f8fa;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
}

header {
    text-align: center;
    padding: 3rem 1rem;
    border-bottom: 1px solid var(--border-color);
}

header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

header .subtitle {
    color: var(--text-secondary);
    font-size: 1.2rem;
}

main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

section {
    margin-bottom: 4rem;
}

h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

h3 {
    font-size: 1.3rem;
    margin: 1.5rem 0 1rem;
    color: var(--text-secondary);
}

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

/* Tables */
.model-table, .results-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    font-size: 0.9rem;
}

.model-table th, .model-table td,
.results-table th, .results-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border: 1px solid var(--border-color);
}

.model-table th, .results-table th {
    background-color: var(--surface-color);
    font-weight: 600;
    color: var(--text-primary);
}

.model-table tr:nth-child(even),
.results-table tr:nth-child(even) {
    background-color: var(--surface-color);
}

.results-table td.best {
    color: var(--success-color);
    font-weight: 600;
}

.results-table td.second {
    color: var(--accent-color);
    text-decoration: underline;
}

.results-table td.oom {
    color: var(--text-secondary);
    font-style: italic;
}

/* Verified checkmark indicator */
.results-table td.verified {
    color: var(--success-color);
    text-align: center;
    font-weight: 600;
}

.results-table td.unverified {
    color: var(--border-color);
    text-align: center;
}

/* Delta row for ablation tables */
.delta-row {
    background-color: rgba(9, 105, 218, 0.06) !important;
    border-top: 2px solid var(--accent-color);
}

.delta-row td {
    color: var(--accent-color);
}

/* Small delta annotations in cells */
.delta-small {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-left: 0.25rem;
}

/* Positive improvement delta (green) */
.delta-improve {
    font-size: 0.75rem;
    color: var(--success-color);
    margin-left: 0.25rem;
}

/* Negative degradation delta (red/orange) */
.delta-degrade {
    font-size: 0.75rem;
    color: var(--warning-color);
    margin-left: 0.25rem;
}

/* Legend for best/second best */
.best-legend {
    color: var(--success-color);
    font-weight: 600;
}

.second-legend {
    color: var(--accent-color);
    text-decoration: underline;
}

.model-table tr.baseline {
    color: var(--text-secondary);
}

/* Baseline row styling */
.baseline-row {
    opacity: 0.85;
}

.baseline-row td:first-child {
    color: var(--text-secondary);
}

.oom-row {
    opacity: 0.6;
}

/* Group header row for compression ratio grouping */
.group-header {
    background: var(--surface-color) !important;
    border-top: 2px solid var(--border-color);
}

.group-header td {
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Compact table variant */
.compact-table {
    font-size: 0.85rem;
}

.compact-table th, .compact-table td {
    padding: 0.5rem 0.75rem;
}

/* Ablation table */
.ablation-table {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Scaling table container */
.scaling-table-container {
    max-width: 700px;
    margin: 2rem auto;
}

/* Resolution Toggle */
.resolution-toggle {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.toggle-btn {
    padding: 0.5rem 1.25rem;
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s;
}

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

.toggle-btn.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
}

/* Resolution Tabs */
.resolution-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 6px;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.tab-btn:hover {
    border-color: var(--accent-color);
    color: var(--text-primary);
}

.tab-btn.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
    color: white;
}

/* Hidden class for table toggling */
.hidden {
    display: none !important;
}

/* Table note */
.table-note {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    background: var(--surface-color);
    border-radius: 6px;
    border-left: 3px solid var(--accent-color);
}

/* Comparison Controls */
.comparison-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 1rem;
    background: var(--surface-color);
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.control-group label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.control-group select, .control-group input[type="range"] {
    padding: 0.4rem 0.6rem;
    border: 1px solid var(--border-color);
    background: var(--bg-color);
    color: var(--text-primary);
    border-radius: 4px;
    font-size: 0.9rem;
}

.control-group select:focus {
    outline: none;
    border-color: var(--accent-color);
}

.control-group input[type="range"] {
    width: 100px;
}

/* Image Comparison Viewer */
.comparison-viewer {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

@media (max-width: 900px) {
    .comparison-viewer {
        grid-template-columns: 1fr;
    }
}

.image-panel {
    background: var(--surface-color);
    border-radius: 8px;
    padding: 1rem;
}

.image-panel h4 {
    text-align: center;
    margin-bottom: 0.75rem;
    font-size: 1rem;
    color: var(--text-primary);
}

.image-container {
    position: relative;
    overflow: hidden;
    border-radius: 4px;
    background: #000;
}

.image-container img {
    width: 100%;
    height: auto;
    display: block;
}

.image-container .heatmap-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}

.image-container .heatmap-overlay.visible {
    opacity: 1;
}

/* Magnifier */
.magnifier {
    position: absolute;
    width: 360px;
    height: 360px;
    border: 3px solid var(--accent-color);
    border-radius: 50%;
    background-repeat: no-repeat;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2), 0 0 20px rgba(9, 105, 218, 0.15);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.1s;
    z-index: 10;
}

.image-container:hover .magnifier {
    opacity: 1;
}

/* Metrics display */
.metrics {
    margin-top: 0.75rem;
    padding: 0.5rem;
    background: var(--bg-color);
    border-radius: 4px;
    font-size: 0.85rem;
    text-align: center;
}

.metrics span {
    margin: 0 0.5rem;
}

.metrics .metric-label {
    color: var(--text-secondary);
}

.metrics .metric-value {
    color: var(--text-primary);
    font-weight: 600;
}

/* Hint text */
.hint {
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-top: 1rem;
}

/* Loading state */
.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}

footer a {
    color: var(--accent-color);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* =============================================================================
   Blog Layout Styles
   ============================================================================= */

/* Hero Section */
.hero-section {
    text-align: center;
    padding: 4rem 1.5rem 3rem;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(180deg, var(--surface-color) 0%, var(--bg-color) 100%);
}

.hero-section h1 {
    color: var(--text-primary);
}

.hero-section h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 0.25rem;
    letter-spacing: -0.02em;
}

.hero-tagline {
    font-size: 1.5rem;
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 1.5rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.4;
}

.hero-abstract {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 2rem;
    line-height: 1.7;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 2rem;
    line-height: 1.7;
}

.hero-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s;
    font-size: 1rem;
}

.btn-primary {
    background: var(--accent-color);
    color: white;
}

.btn-primary:hover {
    background: #4993e6;
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

/* Blog Prose - readable width */
.blog-prose {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.blog-prose p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.25rem;
}

.blog-prose h2 {
    margin-top: 3rem;
}

.blog-prose h3 {
    margin-top: 2rem;
    color: var(--text-primary);
}

.blog-prose ul, .blog-prose ol {
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
}

.blog-prose li {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

/* Blog Wide - full width for figures */
.blog-wide {
    max-width: 1100px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

/* Figure */
.figure {
    margin: 2rem auto;
    text-align: center;
    display: table;
}

.figure-img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
    display: block;
}

.figure-caption {
    display: table-caption;
    caption-side: bottom;
    margin-top: 1rem;
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-style: italic;
    text-align: left;
}

/* Figure Side by Side */
.figure-side-by-side {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
}

.figure-side-by-side .figure {
    flex: 1;
    min-width: 300px;
    max-width: 100%;
}

/* DiT Conclusions */
.dit-conclusions {
    background: var(--surface-color);
    border-radius: 8px;
    padding: 1.5rem 2rem;
    margin-top: 2rem;
}

.dit-conclusions h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.dit-conclusions ul {
    margin: 0;
    padding-left: 1.25rem;
}

.dit-conclusions li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

/* Visual Comparison CTA */
.visualizer-cta {
    text-align: center;
    padding: 2rem;
    background: var(--surface-color);
    border-radius: 12px;
    margin: 2rem 0;
}

.visualizer-cta p {
    margin-bottom: 1rem;
}

.visualizer-cta .btn {
    margin-bottom: 0.75rem;
}

/* Comparison Grid */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.comparison-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
}

.comparison-item img {
    width: 100%;
    height: auto;
    display: block;
}

.comparison-label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: 2rem 1rem 1rem;
    font-weight: 600;
    text-align: center;
}

/* Code Block */
.code-block {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.25rem;
    overflow-x: auto;
    margin: 1rem 0 1.5rem;
}

.code-block code {
    font-family: 'SF Mono', 'Menlo', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    color: var(--text-primary);
    white-space: pre;
}

/* Model Badge */
.model-badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-left: 0.5rem;
    vertical-align: middle;
}

.model-badge.best {
    background: rgba(26, 127, 55, 0.12);
    color: var(--success-color);
}

.model-badge.balanced {
    background: rgba(9, 105, 218, 0.12);
    color: var(--accent-color);
}

.model-badge.fast {
    background: rgba(191, 135, 0, 0.12);
    color: var(--warning-color);
}

/* Model Table Links */
.model-table a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
}

.model-table a:hover {
    text-decoration: underline;
}

/* Recommendations List */
.recommendations {
    list-style: none;
    padding: 0;
}

.recommendations li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.recommendations li:last-child {
    border-bottom: none;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2.5rem;
    }

    .hero-tagline {
        font-size: 1.15rem;
    }

    .hero-abstract,
    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-links {
        flex-direction: column;
        align-items: center;
    }

    .blog-prose p,
    .blog-prose li {
        font-size: 1rem;
    }

    .comparison-grid {
        grid-template-columns: 1fr;
    }

    .resolution-toggle,
    .resolution-tabs {
        flex-wrap: wrap;
    }

    .toggle-btn,
    .tab-btn {
        flex: 1;
        min-width: 70px;
        text-align: center;
    }

    .figure-side-by-side {
        flex-direction: column;
    }
}

/* =============================================================================
   Sidebar Navigation
   ============================================================================= */

.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.04);
    padding: 1.5rem 0;
    overflow-y: auto;
    z-index: 100;
}

.sidebar-header {
    padding: 0 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1rem;
}

.sidebar-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    display: block;
    margin-bottom: 0.25rem;
}

.sidebar-tagline {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.sidebar-nav {
    padding: 0 0.75rem;
}

.sidebar-section {
    margin-bottom: 1.5rem;
}

.sidebar-section-title {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    padding: 0 0.5rem;
    margin-bottom: 0.5rem;
}

.sidebar-link {
    display: block;
    padding: 0.5rem 0.75rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    border-radius: 6px;
    transition: all 0.15s ease;
    margin-bottom: 2px;
}

.sidebar-link:hover {
    background: rgba(9, 105, 218, 0.08);
    color: var(--text-primary);
}

.sidebar-link.active {
    background: rgba(9, 105, 218, 0.12);
    color: var(--accent-color);
    font-weight: 500;
}

.sidebar-link-sub {
    padding-left: 1.5rem;
    font-size: 0.85rem;
}

/* Main content offset for sidebar */
.has-sidebar {
    margin-left: var(--sidebar-width);
}

.has-sidebar .hero-section {
    margin-left: 0;
}

.has-sidebar main {
    max-width: 1100px;
}

/* Citation/Reference styles */
.citation {
    color: var(--accent-color);
    text-decoration: none;
    font-size: 0.85em;
    vertical-align: super;
}

.citation:hover {
    text-decoration: underline;
}

.references {
    background: var(--surface-color);
    border-radius: 8px;
    padding: 1.5rem 2rem;
    margin-top: 2rem;
}

.references h3 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.references ol {
    margin: 0;
    padding-left: 1.5rem;
}

.references li {
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.references a {
    color: var(--accent-color);
    text-decoration: none;
}

.references a:hover {
    text-decoration: underline;
}

/* Mobile: hide sidebar */
@media (max-width: 1024px) {
    .sidebar {
        display: none;
    }

    .has-sidebar {
        margin-left: 0;
    }

    .has-sidebar main {
        max-width: 100%;
    }
}