/* AmbientMeta PII Detection Benchmark — Leaderboard Styles */

:root {
    --navy: #1a1a2e;
    --navy-light: #232342;
    --navy-lighter: #2d2d52;
    --blue: #4a90d9;
    --blue-bright: #2a7ae2;
    --blue-glow: rgba(74, 144, 217, 0.15);
    --green: #34d399;
    --orange: #f59e0b;
    --red: #ef4444;
    --purple: #a78bfa;
    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --text-dim: #64748b;
    --surface: #1e1e38;
    --border: #334155;
    --radius: 8px;
    --max-width: 1100px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    background: var(--navy);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* Header */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(26, 26, 46, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 1rem;
    color: var(--text);
}

.logo img { border-radius: 4px; }

nav { display: flex; gap: 1.5rem; }

nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.15s;
}

nav a:hover { color: var(--blue); }

/* Hero */
.hero {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 4rem 1.5rem 3rem;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.75rem;
}

.subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

.subtitle em {
    color: var(--blue);
    font-style: normal;
    font-weight: 600;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.stat {
    background: var(--navy-light);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem 1.75rem;
    min-width: 130px;
}

.stat.highlight {
    border-color: var(--blue);
    background: var(--blue-glow);
}

.stat-value {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text);
    font-variant-numeric: tabular-nums;
}

.stat.highlight .stat-value { color: var(--blue-bright); }

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Sections */
.section {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 3.5rem 1.5rem;
}

.section.alt {
    background: var(--navy-light);
    max-width: 100%;
    padding-left: 0;
    padding-right: 0;
}

.section.alt > * {
    max-width: var(--max-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.section h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.section-desc {
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-size: 0.95rem;
}

/* Charts */
.chart-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: start;
}

.chart-container {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    position: relative;
}

.chart-container.wide { max-width: 100%; }
.chart-container.radar-container { max-width: 550px; margin: 0 auto; }
.chart-container.css-chart { min-height: 300px; }

/* Tables */
.results-table-wrapper { overflow-x: auto; }

.results-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
    font-variant-numeric: tabular-nums;
}

.results-table th {
    text-align: left;
    padding: 0.75rem 1rem;
    font-weight: 600;
    color: var(--text-muted);
    border-bottom: 2px solid var(--border);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    white-space: nowrap;
}

.results-table td {
    padding: 0.65rem 1rem;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

.results-table tbody tr:hover { background: var(--blue-glow); }

.results-table .best {
    color: var(--blue-bright);
    font-weight: 700;
}

.results-table .system-name { font-weight: 600; }

/* CSS Explainer */
.css-explainer {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: start;
}

.example-pair {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.example-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    flex: 1;
}

.example-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.example-card p {
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--text);
}

.example-vs {
    font-size: 0.8rem;
    color: var(--text-dim);
    font-weight: 600;
    flex-shrink: 0;
}

mark.person { background: rgba(74, 144, 217, 0.3); color: var(--blue-bright); border-radius: 3px; padding: 1px 3px; }
mark.location { background: rgba(52, 211, 153, 0.3); color: var(--green); border-radius: 3px; padding: 1px 3px; }

.entity-tag {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 4px;
    margin-top: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.entity-tag.person { background: rgba(74, 144, 217, 0.2); color: var(--blue); }
.entity-tag.location { background: rgba(52, 211, 153, 0.2); color: var(--green); }

.example-caption {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

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

.code-block pre {
    margin: 0;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.85rem;
    line-height: 1.7;
    color: var(--text);
}

.run-note {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.run-note code {
    background: var(--navy-lighter);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.8rem;
}

/* CTA */
.cta {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 0.7rem 1.5rem;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.15s;
}

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

.btn.primary:hover {
    background: var(--blue);
    transform: translateY(-1px);
}

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

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

/* Footer */
footer {
    border-top: 1px solid var(--border);
    padding: 1.5rem 0;
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-brand a {
    color: var(--blue);
    text-decoration: none;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    font-size: 0.8rem;
}

.footer-links a {
    color: var(--text-dim);
    text-decoration: none;
}

.footer-links a:hover { color: var(--blue); }

.footer-license {
    color: var(--text-dim);
    opacity: 0.7;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 1.75rem; }
    .hero-stats { gap: 1rem; }
    .stat { min-width: 100px; padding: 1rem; }
    .stat-value { font-size: 1.25rem; }
    .chart-row { grid-template-columns: 1fr; }
    .css-explainer { grid-template-columns: 1fr; }
    .example-pair { flex-direction: column; }
    .example-vs { transform: rotate(90deg); }
    nav { gap: 0.75rem; }
    nav a { font-size: 0.8rem; }
}

@media (max-width: 480px) {
    .header-inner { flex-direction: column; gap: 0.5rem; }
    .hero { padding: 2.5rem 1rem 2rem; }
    .section { padding: 2.5rem 1rem; }
}