/* La Leyenda de Aang — parchment scrolls over a cel-shaded 3D world.
   One committed look (the show's scroll/parchment intro), so no dark variant. */
:root {
  color-scheme: light;
  --paper: #F4E9CF;
  --paper-2: #EAD9B0;
  --fold: #D6BF8E;
  --edge: #B8975E;
  --ink: #2A1F17;
  --sepia: #5A4330;
  --seal: #B03A2E;
  --wood: #5B3A21;
  --gold: #C9A227;
  --air: #EE7223;
  --water: #1E5B94;
  --earth: #437C1E;
  --fire: #A10000;
  --tattoo: #7FB2E0;
  --sky: #CFE3EA;

  --display: 'Caesar Dressing', 'Herculanum', 'Papyrus', fantasy;
  --label: 'Cinzel', 'Trajan Pro', 'Times New Roman', serif;
  --body: 'Spectral', 'Iowan Old Style', Georgia, serif;
  --brush: 'Ma Shan Zheng', 'Kaiti SC', 'STKaiti', 'KaiTi', serif;

  --gutter: clamp(16px, 4vw, 56px);
  --panel-w: min(31rem, 100%);
  --radius: 4px;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: auto; }
body {
  margin: 0;
  background: var(--sky);
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

#world {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 0;
  touch-action: pan-y;
}

/* ---------------------------------------------------------------- top bar */
.bar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: calc(env(safe-area-inset-top, 0px) + 12px) var(--gutter) 12px;
  pointer-events: none;
}
.bar > * { pointer-events: auto; }
.brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font: 700 .82rem/1 var(--label);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  border: 1px solid var(--edge);
  padding: .45rem .8rem .45rem .45rem;
  border-radius: 999px;
}
.brand-seal {
  display: grid;
  place-items: center;
  width: 1.9rem; height: 1.9rem;
  background: var(--seal);
  color: var(--paper);
  font: 400 1.2rem/1 var(--brush);
  border-radius: 3px;
}
.nav {
  display: flex;
  gap: .25rem;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  border: 1px solid var(--edge);
  border-radius: 999px;
  padding: .25rem;
}
.nav a {
  font: 700 .72rem/1 var(--label);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--sepia);
  text-decoration: none;
  padding: .55rem .8rem;
  border-radius: 999px;
}
.nav a:hover { color: var(--ink); background: var(--paper-2); }
.nav a[aria-current="true"] { background: var(--ink); color: var(--paper); }

/* ---------------------------------------------------------------- stages */
main { position: relative; z-index: 2; pointer-events: none; }
.stage {
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding-inline: var(--gutter);
  padding-block: 6.5rem 3rem;
}
.stage > * { pointer-events: auto; }
.stage--book { min-height: 115vh; }
.stage--cast { flex-direction: column; align-items: flex-start; justify-content: center; gap: 1.25rem; }

/* ---------------------------------------------------------------- hero */
.hero-copy {
  max-width: 36rem;
  display: grid;
  gap: .9rem;
  text-shadow: 0 1px 0 rgba(255, 244, 222, .7), 0 0 18px rgba(255, 236, 205, .75);
}
.seals { display: flex; gap: .45rem; margin: 0; }
.seals span {
  display: grid; place-items: center;
  width: 2.3rem; height: 2.3rem;
  background: var(--seal);
  color: var(--paper);
  font: 400 1.45rem/1 var(--brush);
  border-radius: 3px;
  text-shadow: none;
  transform: rotate(-3deg);
}
.seals span:nth-child(2) { transform: rotate(2deg); }
.seals span:nth-child(3) { transform: rotate(-1deg); }
.eyebrow, .kicker {
  margin: 0;
  font: 700 .74rem/1.2 var(--label);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--sepia);
}
.wordmark {
  margin: 0;
  font: 400 clamp(4.2rem, 13vw, 9.6rem)/.86 var(--display);
  text-transform: uppercase;
  letter-spacing: .04em;
  background: linear-gradient(180deg, #FFE27A 8%, #F4B83A 45%, #E8702A 92%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-stroke: 2px var(--ink);
  paint-order: stroke fill;
  text-shadow: none;
  filter: drop-shadow(0 4px 0 rgba(42, 31, 23, .35));
}
.subtitle {
  margin: -.2rem 0 0;
  font: 700 clamp(1rem, 2.2vw, 1.35rem)/1.2 var(--label);
  letter-spacing: .32em;
  text-transform: uppercase;
}
.lede { margin: 0; max-width: 32rem; font-size: 1.12rem; }
.hero-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1.1rem; margin-top: .4rem; }
.hint { margin: 0; font-style: italic; color: var(--sepia); font-size: .95rem; }

.scroll-hint {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  color: var(--ink);
  font: 700 .74rem/1 var(--label);
  letter-spacing: .18em;
  text-transform: uppercase;
  text-decoration: none;
}
.scroll-hint svg { width: 16px; height: 28px; fill: var(--tattoo); stroke: var(--tattoo); stroke-width: 4; stroke-linecap: round; animation: bob 1.8s ease-in-out infinite; }

/* ---------------------------------------------------------------- buttons */
.btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 44px;
  padding: .7rem 1.2rem;
  font: 700 .78rem/1 var(--label);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink);
  background: var(--paper);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: 3px 3px 0 var(--ink);
  cursor: pointer;
  text-decoration: none;
  transition: transform .12s ease, box-shadow .12s ease, background-color .2s;
  text-shadow: none;
}
.btn:hover { transform: translate(-1px, -1px); box-shadow: 4px 4px 0 var(--ink); }
.btn:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }
.btn--primary { background: var(--air); color: #fff8ec; }
.btn--glow { background: var(--ink); color: var(--paper); box-shadow: 3px 3px 0 var(--tattoo); }
.btn--glow:hover { box-shadow: 4px 4px 0 var(--tattoo), 0 0 22px rgba(127, 178, 224, .8); }
.btn[disabled] { opacity: .55; cursor: progress; }
:focus-visible { outline: 3px solid var(--seal); outline-offset: 3px; }

/* ---------------------------------------------------------------- scroll panels */
.scroll-panel {
  position: relative;
  width: var(--panel-w);
  padding: 1.9rem 1.6rem 1.7rem;
  background:
    radial-gradient(120% 90% at 50% 40%, transparent 60%, rgba(184, 151, 94, .28) 100%),
    repeating-linear-gradient(0deg, rgba(90, 67, 48, .025) 0 2px, transparent 2px 5px),
    var(--paper);
  border-inline: 1px solid var(--edge);
  box-shadow: 0 18px 40px -18px rgba(42, 31, 23, .55);
  margin-block: 14px;
}
/* wooden rods with gold end caps, top and bottom */
.scroll-panel::before,
.scroll-panel::after {
  content: '';
  position: absolute;
  left: -14px; right: -14px;
  height: 14px;
  border-radius: 7px;
  background:
    radial-gradient(circle at 7px 50%, var(--gold) 0 5px, transparent 6px),
    radial-gradient(circle at calc(100% - 7px) 50%, var(--gold) 0 5px, transparent 6px),
    linear-gradient(180deg, #7a5231, var(--wood) 55%, #3c2615);
  box-shadow: 0 2px 0 rgba(0, 0, 0, .2);
}
.scroll-panel::before { top: -14px; }
.scroll-panel::after { bottom: -14px; }
.panel--right { margin-left: auto; }
.scroll-panel h2 {
  margin: .35rem 0 .7rem;
  font: 400 clamp(2rem, 4.6vw, 2.75rem)/1 var(--display);
  text-transform: uppercase;
  letter-spacing: .03em;
  text-wrap: balance;
}
.scroll-panel p { margin: 0 0 .9rem; max-width: 65ch; }

/* ---------------------------------------------------------------- elements */
.el-tabs { display: grid; grid-template-columns: repeat(4, 1fr); gap: .5rem; margin: 1.1rem 0 1rem; }
.el-tab {
  appearance: none;
  display: grid;
  justify-items: center;
  gap: .35rem;
  padding: .6rem .3rem .55rem;
  background: transparent;
  border: 2px solid transparent;
  border-radius: var(--radius);
  font: 700 .7rem/1 var(--label);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--sepia);
  cursor: pointer;
}
.el-tab:hover { background: var(--paper-2); }
.el-tab[aria-selected="true"] { border-color: var(--nation); color: var(--ink); background: color-mix(in srgb, var(--nation) 12%, var(--paper)); }
.el-ico { width: 2.6rem; height: 2.6rem; }
.el-head { display: flex; align-items: center; gap: .9rem; margin-bottom: .6rem; }
.el-seal {
  display: grid; place-items: center;
  flex: none;
  width: 3.2rem; height: 3.2rem;
  background: var(--nation);
  color: var(--paper);
  font: 400 2rem/1 var(--brush);
  border-radius: 4px;
  transform: rotate(-3deg);
}
.el-head h3 { margin: .15rem 0 0; font: 400 1.7rem/1 var(--display); text-transform: uppercase; }
.facts { display: grid; grid-template-columns: 1fr 1fr; gap: .55rem 1rem; margin: .4rem 0 .9rem; }
.facts div { border-top: 1px solid var(--fold); padding-top: .4rem; }
.facts dt { font: 700 .64rem/1.2 var(--label); letter-spacing: .14em; text-transform: uppercase; color: var(--sepia); }
.facts dd { margin: .15rem 0 0; font-size: .95rem; line-height: 1.35; }
.philo { font-style: italic; border-left: 3px solid var(--nation, var(--seal)); padding-left: .8rem; }

/* ---------------------------------------------------------------- characters */
.card { min-height: 22rem; }
.card-top { display: flex; gap: .9rem; align-items: center; }
.card-top svg { width: 3.4rem; height: 3.4rem; flex: none; }
.card h2 { margin: .2rem 0 0; }
.card .epithet { margin: .35rem 0 0; font: 700 .76rem/1.2 var(--label); letter-spacing: .16em; text-transform: uppercase; color: var(--nation, var(--sepia)); }
.card .facts { grid-template-columns: repeat(3, 1fr); margin-top: 1rem; }
.card-actions { display: flex; flex-wrap: wrap; gap: .7rem; align-items: center; margin-top: .4rem; }
.card-nav { display: flex; gap: .4rem; margin-left: auto; }
.icon-btn {
  appearance: none;
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border: 2px solid var(--ink);
  background: var(--paper);
  border-radius: 50%;
  font: 700 1.1rem/1 var(--label);
  color: var(--ink);
  cursor: pointer;
}
.icon-btn:hover { background: var(--paper-2); }
.trait { font-size: .98rem; }
.trait b { font: 700 .7rem/1 var(--label); letter-spacing: .14em; text-transform: uppercase; color: var(--seal); margin-right: .35rem; }

.roster-wrap { width: 100%; overflow-x: auto; padding-bottom: 6px; scrollbar-width: thin; }
.roster { display: flex; flex-wrap: wrap; gap: .45rem; }
.chip {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  min-height: 40px;
  padding: .35rem .8rem .35rem .4rem;
  border: 1.5px solid var(--edge);
  background: color-mix(in srgb, var(--paper) 92%, transparent);
  border-radius: 999px;
  font: 700 .7rem/1 var(--label);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink);
  cursor: pointer;
}
.chip svg { width: 1.5rem; height: 1.5rem; }
.chip:hover { border-color: var(--ink); }
.chip[aria-selected="true"] { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* ---------------------------------------------------------------- history */
.cycle { display: block; width: 100%; max-width: 20rem; margin: .4rem auto 1rem; }
.cycle text { font: 700 5px var(--label); letter-spacing: .12em; fill: var(--sepia); text-transform: uppercase; }
.book-title { display: flex; align-items: baseline; gap: .8rem; flex-wrap: wrap; }
.book-title .kicker { color: var(--nation); }
.beats { list-style: none; margin: 1rem 0 0; padding: 0; counter-reset: beat; display: grid; gap: .85rem; }
.beats li { counter-increment: beat; display: grid; grid-template-columns: 2.1rem 1fr; gap: .2rem .7rem; }
.beats li::before {
  content: counter(beat);
  grid-row: span 2;
  display: grid; place-items: center;
  width: 2.1rem; height: 2.1rem;
  border: 2px solid var(--nation);
  color: var(--nation);
  border-radius: 50%;
  font: 700 .85rem/1 var(--label);
}
.beats h3 { margin: 0; font: 700 .86rem/1.3 var(--label); letter-spacing: .08em; text-transform: uppercase; }
.beats p { margin: 0; font-size: .98rem; line-height: 1.5; }

.finale .credits { font-size: .9rem; color: var(--sepia); }

/* ---------------------------------------------------------------- hover tag */
.hover-tag {
  position: fixed;
  z-index: 30;
  pointer-events: none;
  padding: .35rem .6rem;
  background: var(--paper);
  border: 1.5px solid var(--ink);
  border-radius: 3px;
  font: 700 .7rem/1 var(--label);
  letter-spacing: .12em;
  text-transform: uppercase;
  transform: translate(14px, 14px);
  box-shadow: 2px 2px 0 var(--ink);
}

/* ---------------------------------------------------------------- intro */
.intro {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 16px;
  background:
    radial-gradient(90% 70% at 50% 50%, #F4E9CF 45%, #E7D3A6 80%, #C7A870 100%);
}
.intro-paper { display: grid; justify-items: center; gap: 1.6rem; text-align: center; }
.intro-stamps { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; justify-content: center; gap: clamp(.8rem, 3vw, 2rem); }
.intro-stamps li { width: clamp(4.2rem, 13vw, 7.5rem); aspect-ratio: 1; max-width: 100%; }
.intro-stamps svg { width: 100%; height: 100%; }
.intro-line { margin: 0; font: 700 clamp(.9rem, 2.4vw, 1.3rem)/1.2 var(--label); letter-spacing: .3em; text-transform: uppercase; }
.intro.is-done { pointer-events: none; }

.no-webgl-note { display: none; }
.no-webgl .no-webgl-note {
  display: block;
  position: fixed; left: 16px; right: 16px; bottom: 16px; z-index: 40;
  margin: 0; padding: 1rem;
  background: var(--paper); border: 2px solid var(--ink);
}
.no-webgl #world { display: none; }
.no-webgl { background: linear-gradient(180deg, #6FA8DC, #F3E3C3); }

@keyframes bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(5px); } }

/* ---------------------------------------------------------------- narrow screens */
@media (max-width: 760px) {
  body { font-size: 1rem; }
  .brand span:last-child { display: none; }
  .nav a { padding: .55rem .6rem; font-size: .66rem; letter-spacing: .08em; }
  .stage { align-items: flex-end; padding-block: 52vh 2.5rem; }
  .stage--hero { padding-block: 50vh 2.5rem; }
  .stage--cast { align-items: stretch; justify-content: flex-end; }
  .scroll-panel { padding: 1.5rem 1.15rem 1.3rem; }
  .scroll-panel::before, .scroll-panel::after { left: -8px; right: -8px; }
  .panel--right { margin-left: 0; }
  .el-tabs { gap: .25rem; }
  .card .facts { grid-template-columns: 1fr 1fr; }
  .roster { flex-wrap: nowrap; }
  .hero-copy { gap: .7rem; }
}

@media (prefers-reduced-motion: reduce) {
  .scroll-hint svg { animation: none; }
  .btn, .btn:hover, .btn:active { transition: none; transform: none; }
}