:root {
  --aub: #160b22;
  --aub-2: #241033;
  --burgundy: #7a1e3a;
  --cranberry: #b93a5b;
  --blush: #f6d7df;
  --ivory: #fff8ef;
  --cyan: #60e6f2;
  --mint: #b8f7e8;
  --lavender: #b9a7c9;
  --lilac: #e8ddf0;
  --ink: #2a102a;
  --muted: #7e6e82;
  --gold: #e9b96b;
  --line-dark: rgba(255, 248, 239, 0.16);
  --line-light: #e6ccd7;
}

* { box-sizing: border-box; }

html, body, .reveal-viewport { background: var(--aub); }

.reveal {
  color: var(--ivory);
  font-family: Inter, Aptos, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

.reveal .slides { text-align: left; }

.reveal section {
  min-height: 100%;
  overflow: hidden;
  padding: 42px 68px;
}

.reveal h1,
.reveal h2,
.reveal h3,
.reveal p { margin: 0; letter-spacing: 0; }

.reveal h1 {
  max-width: 760px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 62px;
  font-weight: 700;
  line-height: 1.02;
}

.reveal h2 {
  max-width: 1080px;
  font-size: 44px;
  font-weight: 760;
  line-height: 1.06;
}

.dark {
  background:
    radial-gradient(circle at 82% 28%, rgba(96, 230, 242, .08), transparent 26%),
    radial-gradient(circle at 2% 98%, rgba(122, 30, 58, .62), transparent 22%),
    linear-gradient(135deg, var(--aub), #100719 72%, var(--aub));
}

.light {
  background:
    radial-gradient(circle at 88% 18%, rgba(246, 215, 223, .72), transparent 20%),
    radial-gradient(circle at 4% 96%, rgba(185, 58, 91, .12), transparent 20%),
    var(--ivory);
  color: var(--ink);
}

.kicker {
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .14em;
  margin-bottom: 17px;
  text-transform: uppercase;
}

.light .kicker { color: var(--burgundy); }

.lead {
  color: var(--lilac);
  font-size: 24px;
  line-height: 1.24;
  margin-top: 28px;
  max-width: 710px;
}

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

footer {
  bottom: 24px;
  color: var(--lavender);
  font-size: 12px;
  left: 68px;
  position: absolute;
}

.title-slide {
  display: flex !important;
  flex-direction: column;
  justify-content: center;
}

.title-slide .authors {
  color: var(--lilac);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 21px;
  font-weight: 700;
  margin-top: 30px;
}

.pill-row {
  display: grid;
  gap: 12px;
  margin-top: 30px;
  max-width: 410px;
}

.pill-row span {
  border: 1px solid var(--cyan);
  border-radius: 7px;
  color: var(--cyan);
  display: block;
  font-size: 12px;
  font-weight: 800;
  padding: 9px 14px;
  text-align: center;
}

.title-thesis {
  color: var(--blush);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 21px;
  font-style: italic;
  font-weight: 700;
  line-height: 1.2;
  margin-top: 48px;
  max-width: 680px;
}

.manifold-canvas {
  inset: 0;
  position: absolute;
  width: 100%;
  height: 100%;
  opacity: .95;
  pointer-events: none;
  z-index: -1;
}

.contribution-grid,
.card-row,
.architecture-row {
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 42px;
}

.contribution-grid article,
.card-row article,
.architecture-row article,
.card {
  background: rgba(255, 255, 255, .82);
  border: 1px solid var(--line-light);
  border-radius: 8px;
  padding: 22px;
}

.dark .card,
.dark .card-row article,
.dark .architecture-row article {
  background: rgba(36, 16, 51, .86);
  border-color: #432052;
}

article b,
.card b {
  color: var(--burgundy);
  display: block;
  font-size: 21px;
  margin-bottom: 10px;
}

.dark article b,
.dark .card b { color: var(--cyan); }

article span,
.card span {
  color: var(--muted);
  display: block;
  font-size: 17px;
  line-height: 1.26;
}

.dark article span,
.dark .card span { color: var(--lilac); }

.bottom-thesis,
.mini-thesis {
  color: var(--burgundy);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 21px;
  font-style: italic;
  font-weight: 700;
  line-height: 1.24;
  margin-top: 34px;
  text-align: center;
}

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

.split {
  align-items: center;
  display: grid;
  gap: 46px;
  grid-template-columns: 1fr 1fr;
  margin-top: 34px;
}

.metrics {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 30px;
}

.metrics div {
  background: var(--aub-2);
  border: 1px solid #432052;
  border-radius: 8px;
  padding: 18px 14px;
}

.light-metrics div,
.light .metrics div {
  background: white;
  border-color: var(--line-light);
}

.metrics b {
  color: var(--cyan);
  display: block;
  font-size: 31px;
  font-weight: 800;
}

.light .metrics b { color: var(--burgundy); }

.metrics span {
  color: var(--lilac);
  display: block;
  font-size: 13px;
  line-height: 1.2;
  margin-top: 6px;
}

.light .metrics span { color: var(--muted); }

.posterior-compare {
  align-items: center;
  display: grid;
  gap: 16px;
  grid-template-columns: 1fr auto 1fr;
}

.compare-panel {
  background: rgba(255, 248, 239, .96);
  border: 1px solid rgba(246, 215, 223, .5);
  border-radius: 8px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, .22);
  min-height: 390px;
  padding: 18px;
}

.compare-panel b {
  color: var(--burgundy);
  display: block;
  font-size: 16px;
  font-weight: 850;
  letter-spacing: .08em;
  margin-bottom: 14px;
  text-align: center;
  text-transform: uppercase;
}

.compare-panel em {
  color: var(--muted);
  display: block;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 17px;
  font-style: italic;
  font-weight: 700;
  line-height: 1.18;
  margin-top: 16px;
  text-align: center;
}

.compare-arrow {
  color: var(--cyan);
  font-size: 34px;
  font-weight: 900;
}

.mini-grid {
  aspect-ratio: 1 / 1;
  display: grid;
  gap: 4px;
  grid-template-columns: repeat(5, 1fr);
}

.mini-grid span {
  align-items: center;
  animation: cellPulse 2.6s ease-in-out infinite;
  background: #f9e7ee;
  border: 1px solid #e1bfca;
  border-radius: 5px;
  color: #7e5f72;
  display: flex;
  font-size: 12px;
  font-weight: 750;
  justify-content: center;
}

.mini-grid span:nth-child(4n + 2) { animation-delay: .35s; }
.mini-grid span:nth-child(5n + 1) { animation-delay: .7s; }
.mini-grid span:nth-child(7n) { animation-delay: 1s; }

.factor-mini {
  align-items: center;
  display: grid;
  gap: 16px;
  grid-template-columns: 78px 28px 78px 22px 88px;
  justify-content: center;
  margin: 16px auto 0;
  max-width: 560px;
  width: 100%;
}




.factor-block {
  align-items: center;
  border-radius: 8px;
  display: flex;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 38px;
  font-weight: 800;
  height: 165px;
  justify-content: center;
  overflow: hidden;
  position: relative;
  width: 100%;
}


.factor-block::after {
  animation: factorSweep 2.8s ease-in-out infinite;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.44), transparent);
  content: "";
  inset: 0 auto 0 -60%;
  position: absolute;
  width: 55%;
}

.a-mini {
  background: var(--burgundy);
  color: var(--ivory);
}

.b-mini {
  background: var(--cyan);
  color: var(--aub);
}

.factor-mini .eq,
.factor-mini .times {
  color: var(--burgundy);
  font-size: 28px;
  font-weight: 900;
  line-height: 1;
  text-align: center;
}
.factor-block sup {
  font-size: 0.48em;
  line-height: 0;
  position: relative;
  top: -0.45em;
}

.w-mini {
  background: var(--ivory);
  border: 1px solid #e6ccd7;
  color: var(--aub);
}


.rank-surface {
  animation: surfaceGlow 3s ease-in-out infinite;
  background:
    linear-gradient(135deg, rgba(96,230,242,.82), rgba(246,215,223,.84)),
    var(--ivory);
  border: 1px solid #e6ccd7;
  border-radius: 50%;
  box-shadow: 0 0 32px rgba(96, 230, 242, .25);
  color: var(--aub);
  font-size: 18px;
  font-weight: 900;
  grid-column: 1 / -1;
  margin-top: 14px;
  padding: 23px 8px;
  text-align: center;
}

@keyframes cellPulse {
  0%, 100% { opacity: .62; transform: scale(.96); }
  45% { opacity: 1; transform: scale(1); }
}

@keyframes factorSweep {
  0% { left: -60%; }
  55%, 100% { left: 110%; }
}

@keyframes surfaceGlow {
  0%, 100% { transform: translateY(0); box-shadow: 0 0 22px rgba(96, 230, 242, .18); }
  50% { transform: translateY(-4px); box-shadow: 0 0 42px rgba(96, 230, 242, .38); }
}

.comparison-table {
  display: grid;
  grid-template-columns: 1.15fr 1fr 1.35fr 1.55fr;
  margin-top: 34px;
  overflow: hidden;
  border: 1px solid var(--line-light);
  border-radius: 8px;
}

.comparison-table.compact { grid-template-columns: 1.3fr 1.05fr 1.45fr .65fr; }
.comparison-table .span2 { grid-column: span 2; }

.comparison-table div {
  background: rgba(255,255,255,.88);
  border-bottom: 1px solid var(--line-light);
  border-right: 1px solid var(--line-light);
  color: var(--ink);
  font-size: 15px;
  line-height: 1.18;
  min-height: 54px;
  padding: 14px 16px;
}

.comparison-table .head {
  background: var(--burgundy);
  color: var(--ivory);
  font-weight: 800;
  min-height: 44px;
}

.comparison-table .ours {
  background: #fbeaf0;
  color: var(--burgundy);
  font-weight: 800;
}

.factor-row {
  align-items: center;
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  margin: 52px auto 42px;
  max-width: 860px;
}


.matrix {
  align-items: center;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 8px;
  display: flex;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 58px;
  font-weight: 700;
  height: 170px;
  justify-content: center;
}

.matrix.w { background: var(--ivory); color: var(--ink); }
.matrix.a { background: var(--burgundy); color: var(--ivory); }
.matrix.b { background: var(--cyan); color: var(--aub); }
.eq,
.times {
  color: var(--gold);
  font-size: 52px;
  font-weight: 900;
  text-align: center;
}
.matrix sup,
.factor-block sup {
  font-size: 0.45em;
  line-height: 0;
  position: relative;
  top: -0.55em;
}


.pushforward {
  align-items: center;
  display: grid;
  gap: 36px;
  grid-template-columns: 1fr 1.5fr 1fr;
  margin: 68px auto 0;
  max-width: 980px;
}

.circle {
  align-items: center;
  aspect-ratio: 1 / 1;
  background: white;
  border: 1px solid var(--line-light);
  border-radius: 50%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}

.circle.accent {
  background: var(--burgundy);
  border-color: var(--cranberry);
  color: var(--ivory);
}

.circle b { font-family: Georgia, "Times New Roman", serif; font-size: 36px; }
.circle span { color: var(--muted); font-size: 15px; margin-top: 8px; }
.circle.accent span { color: var(--blush); }
.arrow { color: var(--aub); font-size: 26px; font-weight: 800; text-align: center; }

.theorem-box {
  background: rgba(36,16,51,.9);
  border: 1px solid rgba(96,230,242,.36);
  border-radius: 8px;
  margin-top: 40px;
  padding: 32px 40px;
  text-align: center;
}

.theorem-box p {
  color: var(--lilac);
  font-size: 20px;
  margin-bottom: 22px;
}

.theorem-box strong {
  color: var(--ivory);
  display: block;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 34px;
}

.theorem-box em {
  color: var(--gold);
  display: block;
  font-size: 13px;
  font-style: normal;
  font-weight: 800;
  letter-spacing: .14em;
  margin: 24px 0 8px;
  text-transform: uppercase;
}

.theorem-box .singular { color: var(--cyan); font-size: 42px; }

.manifold-slide {
  display: flex !important;
  flex-direction: column;
  justify-content: center;
}

.manifold-slide h2 { max-width: 780px; }

.callout {
  background: rgba(22,11,34,.68);
  border-left: 3px solid var(--cyan);
  color: var(--lilac);
  font-size: 24px;
  line-height: 1.25;
  margin-top: 36px;
  max-width: 560px;
  padding: 22px 26px;
}

.figure {
  align-items: center;
  background: white;
  border: 1px solid var(--line-light);
  border-radius: 8px;
  display: flex;
  height: 410px;
  justify-content: center;
  margin: 0;
  padding: 14px;
}

.dark .figure { border-color: #432052; }
.figure img { display: block; max-height: 100%; max-width: 100%; object-fit: contain; }
.figure.wide { height: 430px; margin-top: 30px; }
.figure.short { height: 205px; margin: 22px auto 0; max-width: 930px; }

.caption {
  color: var(--muted);
  font-size: 16px;
  margin-top: 12px;
  text-align: center;
}

.evidence { grid-template-columns: 1.05fr .95fr; }
.evidence .card { margin-bottom: 20px; }

.architecture-row article {
  align-items: center;
  display: flex;
  flex-direction: column;
  height: 190px;
  justify-content: center;
  text-align: center;
}

.architecture-row b { font-size: 40px; }

.two-figures {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr 1fr;
  margin-top: 30px;
}

.two-figures .figure { height: 340px; }

.result-slide .figure { height: 390px; }
.result-slide .metrics { margin-top: 0; }
.result-slide .card { margin-top: 22px; }

.wide-cards { grid-template-columns: 1fr 1fr; }

.center-card {
  margin: 42px auto 0;
  max-width: 850px;
  text-align: center;
}

.agenda {
  grid-template-columns: repeat(2, 1fr);
  max-width: 980px;
}

.closing-slide {
  display: flex !important;
  flex-direction: column;
  justify-content: center;
}

.closing-slide h2 { max-width: 900px; }

.closing-title {
  color: var(--blush);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 24px;
  font-style: italic;
  margin-top: 34px;
}

.closing-links {
  display: grid;
  gap: 12px;
  margin-top: 34px;
  max-width: 590px;
}

.closing-links a,
.closing-links span {
  background: rgba(36,16,51,.85);
  border: 1px solid #432052;
  border-radius: 8px;
  color: var(--cyan);
  font-size: 15px;
  padding: 12px 16px;
  text-decoration: none;
}

.closing-links span { color: var(--blush); }

.reveal .progress { color: var(--cyan); }
.reveal .controls { color: var(--cyan); }

@media (max-width: 900px) {
  .reveal section { padding: 34px 28px; }
  .split,
  .contribution-grid,
  .card-row,
  .architecture-row,
  .two-figures,
  .pushforward,
  .factor-row,
  .metrics,
  .agenda { grid-template-columns: 1fr; }
}
/* Fix figure overflow inside Reveal slides */
.split,
.evidence,
.figure {
  min-width: 0;
}

.figure {
  overflow: hidden;
}

.figure img {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.result-slide .figure {
  height: clamp(300px, 48vh, 390px);
}