/* ============================================================
   Phuket Interactive Textbook — shared design tokens
   Match the visual vocabulary of migrations-map.html.
   ============================================================ */

:root {
  --paper:      #ede4d3;
  --paper-dark: #d8cdb6;
  --ink:        #2b1d12;
  --ink-soft:   #5a4530;
  --accent:     #a8331f;

  /* Earth-tone family for data/era coding */
  --c-sea:     #1f5b6b;
  --c-earth:   #8a6d2c;
  --c-veg:     #3f6b3a;
  --c-brick:   #a8331f;
  --c-aub:     #6b3070;
  --c-amber:   #b8761f;
  --c-umber:   #5a4530;
  --c-night:   #2b1d12;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  background: var(--paper);
  color: var(--ink);
  font-family: 'Cormorant Garamond', serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* ---------- Typographic primitives ---------- */

.eyebrow {
  font-family: 'JetBrains Mono', monospace;
  font-size: .65rem;
  letter-spacing: .3em;
  color: var(--ink-soft);
  text-transform: uppercase;
  margin-bottom: .75rem;
}

h1, h2, h3 { font-weight: 600; line-height: 1.1; }
h1 { font-size: 2.6rem; letter-spacing: -.01em; }
h1 em { font-style: italic; color: var(--accent); font-weight: 500; }
h2 { font-size: 1.6rem; }
h3 { font-size: 1.15rem; font-weight: 600; }

.subtitle {
  font-style: italic;
  color: var(--ink-soft);
  font-size: 1.05rem;
  border-bottom: 1px solid rgba(43,29,18,.25);
  padding-bottom: 1.25rem;
  margin-bottom: 1.25rem;
}

p { font-size: 1.05rem; line-height: 1.55; }

.legend-title,
.section-rule {
  font-family: 'JetBrains Mono', monospace;
  font-size: .65rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: .75rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}
.legend-title::after,
.section-rule::after {
  content: "";
  flex: 1;
  height: 1px;
  background: rgba(43,29,18,.2);
}

/* ---------- Cards / cartouches ---------- */

.card {
  background: var(--paper);
  border: 1px solid rgba(43,29,18,.3);
  padding: 1.5rem;
  position: relative;
}
.card.shadowed {
  box-shadow: 0 20px 40px -15px rgba(43,29,18,.4);
}

.meta-strip {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  font-family: 'JetBrains Mono', monospace;
  font-size: .7rem;
  color: var(--ink-soft);
  border-top: 1px solid rgba(43,29,18,.2);
  border-bottom: 1px solid rgba(43,29,18,.2);
  padding: .5rem 0;
  margin-bottom: .75rem;
}
.meta-strip strong { color: var(--ink); font-weight: 500; }

/* ---------- Vocab click-to-define ---------- */

.vocab {
  cursor: pointer;
  border-bottom: 1.5px dotted var(--accent);
  color: inherit;
  position: relative;
  transition: background .15s ease;
  padding: 0 1px;
}
.vocab:hover,
.vocab:focus {
  background: rgba(168,51,31,.10);
  outline: none;
}
.vocab.is-open {
  background: rgba(168,51,31,.15);
}

.vocab-pop {
  position: absolute;
  z-index: 1000;
  max-width: min(320px, calc(100vw - 16px));
  background: var(--paper);
  border: 1px solid rgba(43,29,18,.4);
  padding: .85rem 1rem;
  font-family: 'Cormorant Garamond', serif;
  font-size: 1rem;
  line-height: 1.45;
  color: var(--ink);
  box-shadow: 3px 4px 0 rgba(43,29,18,.15);
  animation: vocab-fade-in .15s ease-out;
}
.vocab-pop::before {
  content: "";
  position: absolute;
  inset: 3px;
  border: 1px solid rgba(43,29,18,.15);
  pointer-events: none;
}
@keyframes vocab-fade-in {
  from { opacity: 0; transform: translateY(-2px); }
  to   { opacity: 1; transform: translateY(0); }
}
.vocab-pop-term {
  font-family: 'JetBrains Mono', monospace;
  font-size: .65rem;
  letter-spacing: .25em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .35rem;
}
.vocab-pop-def { color: var(--ink); }
.vocab-pop-pron {
  font-style: italic;
  color: var(--ink-soft);
  font-size: .9rem;
  margin-top: .35rem;
}

/* ---------- Site nav (used by chapter pages) ---------- */

.site-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid rgba(43,29,18,.2);
  font-family: 'JetBrains Mono', monospace;
  font-size: .7rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.site-nav a { color: var(--ink-soft); }
.site-nav a:hover { color: var(--accent); text-decoration: none; }
.site-nav .home-link::before { content: "← "; }
.site-nav .next-link::after { content: " →"; }

/* ---------- Loading state pattern (shared) ---------- */

.status-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--paper);
  z-index: 1000;
  font-style: italic;
  color: var(--ink-soft);
  flex-direction: column;
  gap: .5rem;
  text-align: center;
  padding: 1rem;
  transition: opacity .4s ease;
}
.status-overlay.hidden { opacity: 0; pointer-events: none; }
.status-overlay small {
  font-family: 'JetBrains Mono', monospace;
  font-size: .7rem;
  letter-spacing: .1em;
  color: var(--ink-soft);
  opacity: .7;
}

/* ---------- Utilities ---------- */

.center-col {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}
.wide-col {
  max-width: 1080px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

@media (max-width: 600px) {
  h1 { font-size: 2.1rem; }
  h2 { font-size: 1.35rem; }
  .center-col, .wide-col { padding: 1.5rem 1.1rem 3rem; }
}