:root {
  --bg: #ffffff;
  --bg-alt: #f6f5f3;
  --text: #1c1c1e;
  --muted: #66666e;
  --accent: #3a4f9c;
  --accent-a: #2b4c8c;
  --accent-b: #b8324a;
  --accent-gradient: linear-gradient(90deg, var(--accent-a), var(--accent-b));
  --border: #e4e1dc;
  --badge-bg: #1c1c1e;
  --badge-text: #ffffff;
  --code-bg: #f6f5f3;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

:root[data-theme="dark"] {
  --bg: #15141a;
  --bg-alt: #1c1b22;
  --text: #ecebee;
  --muted: #a3a1ab;
  --accent: #8fa4e8;
  --accent-a: #7c9ce8;
  --accent-b: #e37b8f;
  --border: #302f38;
  --badge-bg: #2b2a33;
  --badge-text: #ecebee;
  --code-bg: #1c1b22;
}

:root[data-theme="light"] {
  --bg: #ffffff;
  --bg-alt: #f6f5f3;
  --text: #1c1c1e;
  --muted: #66666e;
  --accent: #3a4f9c;
  --accent-a: #2b4c8c;
  --accent-b: #b8324a;
  --border: #e4e1dc;
  --badge-bg: #1c1c1e;
  --badge-text: #ffffff;
  --code-bg: #f6f5f3;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.65;
  font-size: 17px;
}

.wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ---- Hero ---- */

.hero {
  background: color-mix(in srgb, color-mix(in srgb, var(--accent-a) 60%, var(--accent-b) 40%) 10%, var(--bg));
  border-bottom: 1px solid var(--border);
  padding: 56px 0 40px;
  text-align: center;
}

.venue {
  margin: 6px 0 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-b);
  background: var(--accent-gradient);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.oral-tag {
  display: inline-block;
  margin-left: 6px;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--accent-gradient);
  background-clip: border-box;
  -webkit-background-clip: border-box;
  color: #fff;
  -webkit-text-fill-color: #fff;
  font-weight: 700;
}

.hero h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 2.1rem;
  line-height: 1.3;
  margin: 0;
}

.authors, .affiliations {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0 22px;
  margin: 0;
  padding: 0;
}

.authors {
  font-size: 1.05rem;
  margin-bottom: 10px;
}

.authors a { color: var(--text); text-decoration: none; border-bottom: 1px solid var(--border); }
.authors a:hover { border-color: var(--accent); }

.affiliations {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 30px;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 999px;
  background: var(--badge-bg);
  color: var(--badge-text);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
}

.badge.todo {
  opacity: 0.55;
  border: 1px dashed var(--muted);
}

.badge.todo span {
  font-size: 0.65rem;
  letter-spacing: 0.05em;
  padding: 1px 6px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
}

/* ---- Main sections ---- */

main.wrap { padding: 48px 40px 16px; }

section { margin-bottom: 56px; }

h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.5rem;
  margin: 0 0 20px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: 1.15rem;
  margin: 36px 0 16px;
}

.contributions {
  list-style: none;
  margin: 20px 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.contributions li {
  position: relative;
  padding-left: 22px;
}

.contributions li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-gradient);
}

.contributions strong {
  font-weight: 600;
}

.teaser img {
  width: 100%;
  height: auto;
  box-sizing: border-box;
  border-radius: 8px;
  border: 3px solid black;
  padding: 10px;
  background: var(--bg);
  /* margin: 10px 0; */
}

.caption, figcaption {
  color: var(--muted);
  font-size: 0.92rem;
  margin-top: 10px;
}

.teaser .lead {
  margin: 0 0 14px;
}

.teaser-legend {
  margin: 18px 0 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.teaser-legend > div {
  border-top: 3px solid transparent;
  border-image: var(--accent-gradient) 1;
  padding-top: 10px;
}

.teaser-legend dt {
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.teaser-legend dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.5;
}

@media (max-width: 720px) {
  .teaser-legend { grid-template-columns: 1fr; }
}

.figure-grid {
  display: grid;
  gap: 28px;
}

.figure-grid.two {
  grid-template-columns: 1fr 1fr;
}

@media (max-width: 720px) {
  .figure-grid.two { grid-template-columns: 1fr; }
}

.figure-grid figure {
  margin: 0;
}

.figure-grid img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg-alt);
}

/* ---- Results table ---- */

.table-wrap {
  overflow-x: auto;
  margin: 0 0 32px;
}

.results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  white-space: nowrap;
}

.results-table caption {
  caption-side: top;
  text-align: left;
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 12px;
  line-height: 1.5;
  white-space: normal;
}

.results-table th, .results-table td {
  padding: 8px 12px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.results-table thead th {
  font-weight: 600;
  border-bottom: 2px solid var(--border);
}

.results-table td:first-child, .results-table th:first-child {
  text-align: left;
}

.results-table tr.ours td {
  background: var(--bg-alt);
}

.results-table u { text-decoration-color: var(--accent); }

/* ---- Videos ---- */

.section-note {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: -12px;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.video-card video {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: #000;
  display: block;
}

.video-card .caption {
  text-align: center;
}

.video-placeholder {
  aspect-ratio: 16 / 10;
  border: 1px dashed var(--muted);
  border-radius: 8px;
  background: var(--bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
  padding: 12px;
}

/* ---- BibTeX ---- */

.bibtex {
  position: relative;
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 20px;
}

.bibtex pre {
  margin: 0;
  overflow-x: auto;
  font-size: 0.85rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.copy-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  border-radius: 6px;
  padding: 5px 12px;
  font-size: 0.8rem;
  cursor: pointer;
}

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

/* ---- Footer ---- */

footer {
  border-top: 1px solid var(--border);
  padding: 28px 0 48px;
  text-align: center;
  font-size: 0.88rem;
  color: var(--muted);
}

footer a { color: var(--accent); }

footer p { margin: 4px 0; }

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