:root {
  color-scheme: light;

  /* Softer light theme */
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-muted: #fbfbfc;
  --surface-soft: #f3f4f6;

  --text: #1f2937;        /* body */
  --text-strong: #111827; /* headings */
  --text-muted: #4b5563;

  --border: #e5e7eb;
  --border-soft: #eceff3;

  --hover: #f3f4f6;

  --brand: #111827;
  --brand-contrast: #ffffff;
}
* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  line-height: 1.55;
  background: var(--bg);
  color: var(--text);
}

.site-header {
  position: sticky;
  top: 0;
  background: rgba(246, 247, 249, 0.88);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
  z-index: 10;
}

.nav {
  max-width: 980px;
  margin: 0 auto;
  padding: 12px 18px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand { font-weight: 700; text-decoration: none; color: var(--text-strong); }

.nav-links a {
  margin-left: 14px;
  text-decoration: none;
  color: var(--text-muted);
  font-size: 14px;
}

.container { max-width: 980px; margin: 0 auto; padding: 18px; }

.hero { padding: 42px 0 20px; }
.subtitle { color: var(--text-muted); max-width: 70ch; }

.section { padding: 28px 0; border-top: 1px solid var(--border-soft); }
.section h2 { margin-top: 0; color: var(--text-strong); }

.cta-row { display: flex; gap: 12px; margin-top: 14px; }

.btn {
  display: inline-block;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--brand);
  color: var(--brand-contrast);
  text-decoration: none;
  font-weight: 600;
}
.btn-outline { background: transparent; color: var(--brand); border: 1px solid var(--brand); }

.people { margin-top: 10px; display: grid; gap: 8px; }
.people-block {
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface-muted);
}
.people-title { font-weight: 750; font-size: 13px; color: var(--text-muted); margin-bottom: 4px; }
.people-list { color: var(--text-muted); font-size: 14px; display: flex; flex-wrap: wrap; gap: 6px; }

.details {
  margin-top: 12px;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  background: var(--surface-muted);
}
.details summary { cursor: pointer; font-weight: 600; color: var(--text-strong); }
.details-body { padding-top: 10px; }

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
@media (min-width: 860px) {
  .grid { grid-template-columns: 1fr 1fr; }
}

.card {
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  background: var(--surface);
}
.card img { width: 100%; border-radius: 10px; border: 1px solid var(--border-soft); }

.mini-viewer {
  margin-top: 18px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #2a2a2a;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.12);
  position: relative;
  width: 100%;
  aspect-ratio: 1.4 / 1;
}
.mini-viewer iframe {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
}
.mini-viewer .mini-viewer-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.6);
  color: #f8fafc;
  font-size: 12px;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(6px);
}
.mini-viewer .mini-viewer-btn:hover {
  background: rgba(0, 0, 0, 0.75);
}

.footer { padding: 24px 0 40px; color: var(--text-muted); font-size: 14px; }

/* Table wrapper */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  margin-top: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

/* Base tables */
.results-table {
  width: 100%;
  min-width: 980px;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.results-table th,
.results-table td {
  padding: 0.55rem 0.6rem;
  border-bottom: 1px solid var(--border);
  text-align: right;
  white-space: nowrap;
  vertical-align: middle;
}

/* Default left-align first 3 columns for normal result tables */
.results-table th:first-child,
.results-table td:first-child,
.results-table th:nth-child(2),
.results-table td:nth-child(2),
.results-table th:nth-child(3),
.results-table td:nth-child(3) {
  text-align: left;
}

.results-table thead th {
  position: sticky;
  top: 0; /* change to 56px if sticky site header overlaps */
  background: var(--surface);
  z-index: 1;
}

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

.summary-table {
  min-width: 640px;
}

/* Ablation table (compact) */
.ablation-table {
  min-width: 860px; /* override base 980px */
  font-size: 0.8rem;
}

.ablation-table th,
.ablation-table td {
  padding: 0.38rem 0.42rem;
  line-height: 1.2;
}

/* --- IMPORTANT FIX ---
   Use explicit column classes instead of nth-child, because rowspan shifts cell positions per row. */

/* Column alignment */
.ablation-table th.col-dataset,
.ablation-table td.col-dataset,
.ablation-table th.col-model,
.ablation-table td.col-model,
.ablation-table th.col-wass,
.ablation-table td.col-wass {
  text-align: left;
}

.ablation-table th.col-metric,
.ablation-table td.col-metric {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* Column widths */
.ablation-table th.col-dataset,
.ablation-table td.col-dataset {
  min-width: 105px;
}

.ablation-table th.col-model,
.ablation-table td.col-model {
  min-width: 68px;
}

.ablation-table th.col-wass,
.ablation-table td.col-wass {
  min-width: 104px;
  white-space: normal;
  line-height: 1.15;
}

.ablation-table th.col-metric,
.ablation-table td.col-metric {
  min-width: 54px;
}

/* Grouped dataset label cell */
.ablation-table td[rowspan] {
  vertical-align: top;
  font-weight: 600;
  background: var(--surface-soft);
}

/* Stronger separators between dataset blocks */
.ablation-table tbody tr.group-start td {
  border-top: 2px solid #d1d5db;
}

.section {
  scroll-margin-top: 40px;
}

.results-subhead {
  margin: 1.2rem 0 0.4rem;
}

.results-lead {
  color: var(--text-muted);
  margin: 0 0 0.75rem;
}

.results-summary-wrap {
  margin-top: 1rem;
}

.result-figures {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.result-row {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(280px, 1fr);
  gap: 1rem;
  align-items: start;
}

.result-figure {
  margin: 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
  padding: 0.7rem;
}

.result-figure img {
  width: 100%;
  display: block;
  border-radius: 8px;
  border: 1px solid var(--border-soft);
}

.result-figure--narrow img {
  max-width: 520px;
  margin: 0 auto;
}

.result-figure figcaption {
  text-align: center;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.45rem;
}

.result-note h4 {
  margin: 0 0 0.5rem;
  color: var(--text-strong);
}

.result-note ul {
  margin: 0;
  padding-left: 1.1rem;
}

.result-note li + li {
  margin-top: 0.35rem;
}

.results-details {
  margin-top: 1rem;
}

.loading-muted {
  color: var(--text-muted);
}

.nowrap {
  white-space: nowrap;
}

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

/* ── Citation superscripts ─────────────────────────────────────── */
.cite {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.78em;
  font-variant-numeric: tabular-nums;
}
.cite:hover { text-decoration: underline; color: var(--text-strong); }

/* ── References list ───────────────────────────────────────────── */
.references-list {
  padding-left: 1.6rem;
  margin: 0.5rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-muted);
}
.references-list li { padding-left: 0.2rem; }
.references-list a { color: var(--text-muted); }
.references-list a:hover { color: var(--text-strong); }