/* ---------- Base ---------- */
:root {
  --primary: #2b4570;
  --accent: #b6465f;
  --muted: #6e7c87;
  --bg: #ffffff;
  --bg-soft: #f7f8fb;
  --border: #e6e8ee;
  --text: #1a1f2c;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Hero ---------- */
.hero {
  padding: 64px 0 36px;
  text-align: center;
  background: linear-gradient(180deg, #f7f8fb 0%, #ffffff 100%);
  border-bottom: 1px solid var(--border);
}

.hero h1 {
  font-size: clamp(1.6rem, 3.2vw, 2.4rem);
  font-weight: 700;
  margin: 0 0 16px;
  letter-spacing: -0.01em;
  line-height: 1.25;
}

.hero h1 .brand {
  color: var(--accent);
}

.authors {
  font-size: 1.05rem;
  margin: 16px 0 4px;
  line-height: 1.7;
}

.authors sup { color: var(--muted); font-size: 0.75em; }

.affiliations {
  color: var(--muted);
  font-size: 0.92rem;
  margin: 0 0 24px;
}

.corresponding {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 8px;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 18px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: #1a1f2c;
  color: #fff;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: transform 0.15s ease, background 0.15s ease;
}
.badge:hover { background: var(--accent); transform: translateY(-1px); text-decoration: none; color: #fff; }
.badge.alt { background: var(--primary); }
.badge.outline { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
.badge.outline:hover { background: var(--primary); color: #fff; }

/* ---------- Sections ---------- */
section {
  padding: 56px 0;
  border-bottom: 1px solid var(--border);
}
section:last-of-type { border-bottom: none; }

section h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin: 0 0 20px;
  letter-spacing: -0.01em;
}

section h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 28px 0 12px;
  color: var(--primary);
}

section p { margin: 0 0 14px; font-size: 1rem; }
section .lead { font-size: 1.05rem; color: #2c3340; }

.figure {
  margin: 24px 0 8px;
  text-align: center;
}
.figure img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 20px rgba(20, 30, 60, 0.07);
}
.figure .caption {
  font-size: 0.9rem;
  color: var(--muted);
  margin-top: 10px;
  text-align: center;
}

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

/* ---------- Leaderboard ---------- */
.leaderboard-wrap {
  overflow-x: auto;
  margin-top: 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.leaderboard {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
.leaderboard thead th {
  background: #1a1f2c;
  color: #fff;
  padding: 12px 14px;
  text-align: left;
  cursor: pointer;
  user-select: none;
  font-weight: 600;
  white-space: nowrap;
  position: sticky;
  top: 0;
}
.leaderboard thead th:hover { background: var(--primary); }
.leaderboard thead th .arrow { opacity: 0.5; font-size: 0.75em; margin-left: 4px; }
.leaderboard thead th.sorted-asc .arrow,
.leaderboard thead th.sorted-desc .arrow { opacity: 1; color: #ffd166; }
.leaderboard tbody td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
}
.leaderboard tbody tr:nth-child(even) { background: var(--bg-soft); }
.leaderboard tbody tr:hover { background: #fff7e6; }
.leaderboard .rank {
  font-weight: 700;
  color: var(--accent);
  width: 50px;
}
.leaderboard .model {
  font-weight: 600;
}
.leaderboard .num { font-variant-numeric: tabular-nums; }
.leaderboard .tag {
  display: inline-block;
  padding: 2px 8px;
  background: #eef2f8;
  color: var(--primary);
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 500;
}
.leaderboard .tag.open { background: #e7f5e8; color: #2f7a3d; }
.leaderboard .tag.agentic { background: #fdeef2; color: var(--accent); }

/* ---------- Comparison Slider Section ---------- */
.compare-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 20px;
}
@media (min-width: 800px) {
  .compare-grid { grid-template-columns: 1fr 1fr; }
}
.compare-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  background: var(--bg);
}
.compare-card img-comparison-slider {
  width: 100%;
  --divider-width: 2px;
  --divider-color: var(--accent);
  --default-handle-color: var(--accent);
  display: block;
  background: #f0f1f4;
  aspect-ratio: 4 / 3;
}
.compare-card img-comparison-slider img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.compare-meta {
  padding: 12px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  border-top: 1px solid var(--border);
}
.compare-meta .instr { color: var(--text); font-weight: 500; }
.compare-meta .labels { color: var(--muted); }

/* ---------- Gallery ---------- */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 12px;
  margin-top: 18px;
}
.gallery a {
  display: block;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: 8px;
  background: #f0f1f4;
  position: relative;
}
.gallery a img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}
.gallery a:hover img { transform: scale(1.05); }
.gallery a .label {
  position: absolute;
  left: 8px; bottom: 8px;
  background: rgba(20, 30, 60, 0.78);
  color: #fff;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
}

/* ---------- BibTeX ---------- */
.bibtex {
  background: #1a1f2c;
  color: #f5f7fa;
  padding: 20px 22px;
  border-radius: 8px;
  font-family: "JetBrains Mono", "SF Mono", "Menlo", monospace;
  font-size: 0.85rem;
  white-space: pre;
  overflow-x: auto;
  line-height: 1.55;
  position: relative;
}
.copy-btn {
  position: absolute;
  top: 12px; right: 12px;
  background: #2b4570;
  color: #fff;
  border: 0;
  padding: 6px 12px;
  font-size: 0.8rem;
  border-radius: 4px;
  cursor: pointer;
}
.copy-btn:hover { background: var(--accent); }

/* ---------- Footer ---------- */
footer {
  padding: 36px 0;
  text-align: center;
  color: var(--muted);
  font-size: 0.88rem;
  background: var(--bg-soft);
}
footer a { color: var(--muted); text-decoration: underline; }

/* ---------- Utility ---------- */
.tabs {
  display: flex;
  gap: 8px;
  margin: 16px 0;
  flex-wrap: wrap;
}
.tab-btn {
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  cursor: pointer;
  font-size: 0.88rem;
  color: var(--text);
}
.tab-btn.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}