/* ── Base ── */
body {
  font-family: 'Noto Sans', sans-serif;
}

/* ── Hero spacing ── */
.hero .hero-body {
  padding-bottom: 1rem;
}

/* ── Navbar ── */
.navbar {
  border-bottom: 1px solid #f0f0f0;
}

/* ── Hero ── */
.ref-adv {
  font-variant: small-caps;
  font-weight: bold;
}

.ref-color {
  color: #3273dc;
}

.adv-color {
  color: #e0457b;
}

.publication-venue {
  font-family: 'Google Sans', sans-serif;
  font-size: 1.4rem;
  font-weight: 800;
  color: #c62828;
  margin-top: 0.4rem;
  margin-bottom: 0.2rem;
}

.publication-title,
.publication-authors {
  font-family: 'Google Sans', sans-serif;
}

.publication-subtitle {
  font-family: 'Google Sans', sans-serif;
  color: #363636;
}

.author-block {
  display: inline-block;
}

.author-block a {
  color: #6a7fa5;
  text-decoration: none;
}

.author-block a:hover {
  color: #3273dc;
  text-decoration: underline;
}

.publication-affiliation {
  font-family: 'Google Sans', sans-serif;
  color: #555;
}

.publication-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
}

.link-block {
  margin: 4px;
}

/* ── Section titles (ICLR style) ── */
.section-title {
  font-family: 'Castoro', 'Times New Roman', serif;
  font-variant: small-caps;
  font-weight: 400;
  letter-spacing: 0.04em;
  font-size: 1.8rem;
}

/* ── Demo section ── */
.demo-card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.demo-card:hover {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.14);
}

.demo-card-image {
  position: relative;
  overflow: hidden;
  background: #f5f5f5;
}

.demo-card-image img {
  display: block;
  width: 100%;
  height: auto;
}

/* Gallery grid: subtle striped background */
#mode-gallery .gallery-grid-wrap {
  border-radius: 8px;
  padding: 16px 12px 10px;
  background: repeating-linear-gradient(
    180deg,
    rgba(0,0,0,0.03) 0px,
    rgba(0,0,0,0.03) 1px,
    transparent 1px,
    transparent 8px
  );
}

/* Gallery cells: tight plain table layout */
.gallery-cell {
  margin-bottom: 6px;
}

.gallery-cell-img {
  position: relative;
  height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border-radius: 4px;
  overflow: hidden;
}

.gallery-cell-img img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  display: block;
}

.gallery-cell-caption {
  font-size: 1rem;
  color: #444;
  line-height: 1.35;
  margin-top: 4px;
  text-align: center;
}

.demo-card-body {
  padding: 10px 14px;
}

.demo-caption {
  font-size: 0.88rem;
  font-weight: 500;
  color: #333;
  line-height: 1.4;
  min-height: 2.5em;
}

.demo-tags {
  margin-top: 6px;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.demo-tag {
  font-size: 0.7rem;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 600;
}

.demo-tag.distractors {
  background: #fce4ec;
  color: #c62828;
}

.demo-card-actions {
  padding: 8px 14px 12px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.demo-result {
  font-size: 0.85rem;
  font-weight: 600;
}

.demo-result.correct {
  color: #2e7d32;
}

.demo-result.incorrect {
  color: #c62828;
}

.demo-result.pending {
  color: #999;
}

/* Click overlay feedback */
.click-marker {
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2px solid #fff;
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: 10;
  animation: clickPulse 0.4s ease-out;
}

@keyframes clickPulse {
  0% { transform: translate(-50%, -50%) scale(0.5); opacity: 1; }
  100% { transform: translate(-50%, -50%) scale(1); opacity: 1; }
}

/* GT bbox drawing */
.bbox-overlay {
  position: absolute;
  border: 3px solid #00e676;
  border-radius: 2px;
  pointer-events: none;
  z-index: 5;
  animation: bboxFadeIn 0.3s ease-in;
}

@keyframes bboxFadeIn {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

/* Mode toggle tabs */
#demo .tabs ul {
  border-bottom: none;
}

/* ── Challenge mode ── */
.challenge-carousel {
  display: flex;
  align-items: center;
  gap: 16px;
  max-width: 1100px;
  margin: 0 auto;
}

.challenge-main {
  flex: 1;
  min-width: 0;
}

.challenge-arrow {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid #ddd;
  background: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: #555;
  transition: all 0.15s;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}

.challenge-arrow:hover {
  background: #f5f5f5;
  border-color: #bbb;
  color: #222;
}

/* Progress dots */
.challenge-dots {
  display: inline-flex;
  gap: 8px;
}

.challenge-dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 2px solid #ddd;
  background: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  color: #999;
  cursor: pointer;
  transition: all 0.15s;
}

.challenge-dot.active {
  border-color: #3273dc;
  color: #3273dc;
  background: #eef3fc;
}

.challenge-dot.correct {
  border-color: #2e7d32;
  background: #e8f5e9;
  color: #2e7d32;
}

.challenge-dot.incorrect {
  border-color: #c62828;
  background: #fce4ec;
  color: #c62828;
}

/* Challenge card: crosshair cursor */
#challenge-card .demo-card-image {
  cursor: crosshair;
}

/* ── Results table ── */
.results-table {
  font-size: 0.88rem;
  border-collapse: collapse;
}

.results-table thead th {
  background: #fafafa;
  border-bottom: 2px solid #ddd;
  font-weight: 600;
  white-space: nowrap;
  padding: 6px 10px;
  font-size: 0.82rem;
}

.results-table thead th.col-sep {
  border-left: 2px solid #ddd;
}

.results-table tbody td {
  padding: 4px 10px;
  white-space: nowrap;
  border-bottom: 1px solid #f0f0f0;
}

.results-table tbody td.col-sep {
  border-left: 2px solid #ddd;
}

.results-table .group-header td {
  background: #f7f7f7;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 8px 10px 4px;
  border-bottom: 1px solid #e0e0e0;
  border-top: 2px solid #ddd;
}

.results-table .group-header:first-child td {
  border-top: none;
}

.results-table .human-expert td {
  background: #fff8e1;
}

.results-table .delta-col {
  color: #5c7cba;
  font-size: 0.8rem;
}

.results-table td b {
  background: #e8f0fe;
  padding: 1px 4px;
  border-radius: 3px;
}

/* Responsive tweaks */
@media screen and (max-width: 768px) {
  .demo-caption {
    font-size: 0.8rem;
  }
  .gallery-cell-img {
    height: 150px;
  }
  .gallery-cell-caption {
    font-size: 0.75rem;
  }
  .challenge-arrow {
    width: 36px;
    height: 36px;
    font-size: 0.9rem;
  }
  .challenge-carousel {
    gap: 6px;
  }
}