/* ============================================================
   BSMS205 Genetics — Claude Theme for Reveal.js
   Palette: parchment #FAF6F1, terracotta #D4724E, ink #2B2622
   Font:   Helvetica Neue (body ≥ 28pt), tabular figures
   ============================================================ */

:root {
  --parchment: #FAF6F1;
  --parchment-deep: #F2EBE0;
  --terracotta: #D4724E;
  --terracotta-deep: #B85A38;
  --ink: #2B2622;
  --ink-soft: #5A514A;
  --rule: #D9CFC0;
  --highlight: #F4E4D6;
}

/* ---- base ---- */
html, body, .reveal { background: var(--parchment); }
.reveal {
  font-family: "Helvetica Neue", "Helvetica", "Arial", sans-serif;
  font-size: 30px;
  color: var(--ink);
  font-feature-settings: "tnum" 1, "lnum" 1;
}

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

.reveal .slides > section,
.reveal .slides > section > section {
  padding: 36px 100px;
  line-height: 1.4;
  box-sizing: border-box;
  overflow: hidden;
}

/* ---- headings ---- */
.reveal h1, .reveal h2, .reveal h3, .reveal h4 {
  font-family: "Helvetica Neue", "Helvetica", sans-serif;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: -0.01em;
  text-transform: none;
  margin-bottom: 0.6em;
}
.reveal h1 { font-size: 2.4em; line-height: 1.1; }
.reveal h2 { font-size: 1.6em; line-height: 1.15; border-bottom: 3px solid var(--terracotta); padding-bottom: 0.25em; display: inline-block; }
.reveal h3 { font-size: 1.25em; color: var(--terracotta-deep); }

/* ---- emphasis ---- */
.reveal strong { color: var(--terracotta-deep); font-weight: 700; }
.reveal em { color: var(--ink-soft); font-style: italic; }

/* ---- bullets ---- */
.reveal ul, .reveal ol { margin-left: 1.2em; }
.reveal ul li, .reveal ol li { margin: 0.45em 0; }
.reveal ul { list-style: none; }
.reveal ul li::before {
  content: "▸";
  color: var(--terracotta);
  display: inline-block;
  width: 1.2em;
  margin-left: -1.2em;
  font-weight: 700;
}

/* ---- BIG NUMBER blocks ---- */
.reveal .bignum {
  font-size: 3.6em;
  font-weight: 800;
  color: var(--terracotta-deep);
  line-height: 1;
  margin: 0.2em 0 0.1em;
  letter-spacing: -0.02em;
}
.reveal .bignum-label {
  font-size: 0.9em;
  color: var(--ink-soft);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 1em;
}

/* ---- formula / equation callout ---- */
.reveal .formula {
  background: var(--parchment-deep);
  border-left: 6px solid var(--terracotta);
  padding: 0.8em 1.2em;
  margin: 0.8em 0;
  font-family: "SF Mono", "Menlo", "Consolas", monospace;
  font-size: 1.1em;
  border-radius: 4px;
}

/* ---- quote / key rule ---- */
.reveal blockquote {
  background: var(--highlight);
  border-left: 6px solid var(--terracotta);
  padding: 0.8em 1.2em;
  margin: 0.8em auto;
  font-style: normal;
  font-weight: 600;
  color: var(--ink);
  box-shadow: none;
  width: auto;
}

/* ---- tables ---- */
.reveal table {
  margin: 0.5em 0;
  border-collapse: collapse;
  font-size: 0.78em;
  width: 100%;
}
.reveal table th {
  background: var(--terracotta);
  color: var(--parchment);
  padding: 0.5em 0.7em;
  text-align: left;
  border: none;
  font-weight: 700;
}
.reveal table td {
  padding: 0.45em 0.7em;
  border-bottom: 1px solid var(--rule);
}
.reveal table tr:nth-child(even) td { background: var(--parchment-deep); }

/* ---- code ---- */
.reveal code {
  background: var(--parchment-deep);
  color: var(--terracotta-deep);
  padding: 0.1em 0.35em;
  border-radius: 3px;
  font-family: "SF Mono", "Menlo", "Consolas", monospace;
  font-size: 0.9em;
}

/* ---- title slide ---- */
.reveal .title-slide {
  text-align: left;
}
.reveal .title-slide .eyebrow {
  font-size: 0.8em;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--terracotta);
  font-weight: 600;
  margin-bottom: 0.5em;
}
.reveal .title-slide h1 {
  font-size: 3em;
  color: var(--ink);
  margin: 0;
}
.reveal .title-slide .chapter-num {
  font-size: 1em;
  color: var(--ink-soft);
  margin-top: 1.5em;
  letter-spacing: 0.15em;
}

/* ---- section divider ---- */
.reveal .section-divider {
  text-align: left;
}
.reveal .section-divider .section-num {
  font-size: 0.75em;
  letter-spacing: 0.25em;
  color: var(--terracotta);
  font-weight: 700;
}
.reveal .section-divider h1 {
  font-size: 2.6em;
  line-height: 1.1;
  margin-top: 0.3em;
  color: var(--ink);
}

/* ---- 2-column layout (CSS Grid for robust column widths) ---- */
.reveal .cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1.5em;
  align-items: start;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}
.reveal .cols > div {
  min-width: 0;
  overflow-wrap: break-word;
  word-wrap: break-word;
  word-break: break-word;
  box-sizing: border-box;
}
.reveal .cols ul,
.reveal .cols ol {
  margin-left: 1em;
  padding-right: 0.2em;
  min-width: 0;
}
.reveal .cols li {
  min-width: 0;
  overflow-wrap: break-word;
}

/* ---- figure / image ---- */
.reveal figure { text-align: center; margin: 0; max-width: 100%; width: 100%; box-sizing: border-box; }
.reveal figure img { max-height: 400px; max-width: 100%; border: 1px solid var(--rule); border-radius: 4px; object-fit: contain; }
.reveal figure figcaption {
  font-size: 0.55em;
  color: var(--ink-soft);
  margin-top: 0.5em;
  line-height: 1.35;
  text-align: left;
  max-width: 100%;
  overflow-wrap: break-word;
  word-wrap: break-word;
  box-sizing: border-box;
}

/* ---- question cue ---- */
.reveal .cue {
  font-size: 0.7em;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--terracotta);
  font-weight: 600;
  margin-bottom: 0.4em;
}

/* ---- links & controls ---- */
.reveal a { color: var(--terracotta-deep); text-decoration: none; border-bottom: 1px dashed var(--terracotta); }
.reveal .controls { color: var(--terracotta); }
.reveal .progress { color: var(--terracotta); height: 4px; }

/* ---- slide footer ---- */
.reveal .slide-footer {
  position: absolute;
  bottom: 16px;
  left: 60px;
  right: 60px;
  display: flex;
  justify-content: space-between;
  font-size: 0.5em;
  color: var(--ink-soft);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ---- print ---- */
@media print { .reveal .slide-footer { display: none; } }