:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #22263a;
  --border: #2e3247;
  --accent: #4f8ef7;
  --accent2: #7c6af7;
  --open: #22c55e;
  --cred: #f59e0b;
  --rest: #ef4444;
  --text: #e2e8f0;
  --muted: #8892a4;
}

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

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

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

.dataset-nav {
  max-width: 980px;
  margin: 0 auto;
  padding: 24px 24px 0;
}
.dataset-nav a { color: var(--muted); font-size: 0.9rem; }
.dataset-nav a:hover { color: var(--text); text-decoration: none; }

.dataset-hero {
  max-width: 980px;
  margin: 0 auto;
  padding: 24px 24px 32px;
  border-bottom: 1px solid var(--border);
}
.dataset-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}
.dataset-hero-meta { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.dataset-hero-image {
  width: 100%;
  max-height: 280px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--border);
  margin-bottom: 18px;
}
.dataset-hero-links { display: flex; gap: 10px; flex-wrap: wrap; }
.hero-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 7px 14px;
  border-radius: 8px;
  font-size: 0.88rem;
}
.hero-link:hover {
  color: var(--text);
  border-color: var(--accent);
  background: rgba(79,142,247,0.08);
  text-decoration: none;
}

.tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 4px;
  line-height: 1.5;
}
.tag-open  { background: rgba(34,197,94,.15);  color: var(--open); }
.tag-cred  { background: rgba(245,158,11,.15); color: var(--cred); }
.tag-rest  { background: rgba(239,68,68,.15);  color: var(--rest); }

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 12px;
}
.status-icon { font-size: 0.95rem; line-height: 1; }

.dataset-facts, .dataset-section {
  max-width: 980px;
  margin: 0 auto;
  padding: 28px 24px;
}
.dataset-facts h2, .dataset-section h2 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.dataset-facts table,
.dataset-section-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}
.dataset-facts th,
.dataset-section-table th,
.dataset-facts td,
.dataset-section-table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}
.dataset-facts th {
  color: var(--muted);
  font-weight: 600;
  width: 140px;
  font-size: 0.85rem;
}
.dataset-facts tr:last-child th,
.dataset-facts tr:last-child td { border-bottom: none; }
.dataset-section-table thead th {
  background: var(--surface2);
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.dataset-description p { margin-bottom: 12px; }
.dataset-description code {
  background: #0d0f14;
  border: 1px solid var(--border);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
}

.dataset-plot figure { margin: 0; }
.dataset-plot img {
  width: 100%;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
}
.dataset-plot figcaption {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 8px;
  text-align: center;
}

.code-block {
  background: #0d0f14;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 20px;
  font-family: 'Menlo', 'Consolas', 'Courier New', monospace;
  font-size: 0.85rem;
  color: var(--text);
  overflow-x: auto;
  line-height: 1.6;
  white-space: pre;
}

.notebook-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(79,142,247,0.08);
  border: 1px solid rgba(79,142,247,0.35);
  color: var(--accent);
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
}
.notebook-link:hover { background: rgba(79,142,247,0.18); text-decoration: none; }

.dataset-links { list-style: none; padding: 0; }
.dataset-links li { padding: 4px 0; }

.dataset-footer {
  max-width: 980px;
  margin: 40px auto 0;
  padding: 24px;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.85rem;
}
.dataset-footer a { color: var(--muted); }
.dataset-footer a:hover { color: var(--accent); }