@font-face { font-family: "Sofia Sans Extra Condensed"; src: url("../fonts/sofia-sans-extra-condensed-latin-200-normal.woff2") format("woff2"); font-weight: 200; font-display: swap; }
@font-face { font-family: "Sofia Sans Extra Condensed"; src: url("../fonts/sofia-sans-extra-condensed-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Barlow"; src: url("../fonts/barlow-latin-400-normal.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Barlow"; src: url("../fonts/barlow-latin-300-normal.woff2") format("woff2"); font-weight: 300; font-display: swap; }

:root {
  color-scheme: dark;
  --paper: #14110e;
  --ink: #ece6dc;
  --muted: #a39a8e;
  --accent: #eb9a45;
  --rule: rgba(236, 230, 220, 0.14);
  --glass: rgba(20, 17, 14, 0.62);
  --display: "Sofia Sans Extra Condensed", ui-sans-serif, sans-serif;
  --body: "Barlow", ui-sans-serif, sans-serif;
  --gutter: 48px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 1.0625rem/1.55 var(--body); -webkit-font-smoothing: antialiased; overflow-x: clip; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
::selection { background: rgba(235, 154, 69, 0.35); }
h1, h2 { margin: 0; font: 200 clamp(2.6rem, 4vw + 1rem, 5rem)/0.95 var(--display); text-transform: uppercase; letter-spacing: -0.005em; text-wrap: balance; }
h2 { font-size: clamp(2.2rem, 2.6vw + 1rem, 3.8rem); }
p { margin: 0; }

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

/* loader */
.loader { position: fixed; inset: 0; z-index: 50; display: grid; place-content: center; gap: 16px; background: var(--paper); transition: opacity 700ms ease, visibility 700ms; }
.loader.is-done { opacity: 0; visibility: hidden; }
.loader__title { font: 200 2rem/1 var(--display); text-transform: uppercase; letter-spacing: 0.04em; }
.loader__bar { width: 220px; height: 2px; background: var(--rule); }
.loader__bar span { display: block; height: 100%; width: 0; background: var(--accent); transition: width 200ms ease; }

/* hud */
.hud { position: fixed; z-index: 20; top: 0; left: 0; right: 0; display: flex; justify-content: space-between; align-items: center; padding: 18px var(--gutter); pointer-events: none; }
.hud > * { pointer-events: auto; }
.wordmark { font: 400 1.5rem/1 var(--display); text-transform: uppercase; text-decoration: none; letter-spacing: 0.02em; }
.wordmark small { color: var(--accent); font-size: 0.9rem; vertical-align: super; }
.hud nav { display: flex; gap: 10px; align-items: center; }
.btn, .ghost { display: inline-flex; align-items: center; min-height: 42px; padding: 0 18px; border: 1px solid var(--ink); font: 400 1.15rem/1 var(--display); text-transform: uppercase; letter-spacing: 0.03em; text-decoration: none; background: transparent; color: var(--ink); transition: background-color 200ms, color 200ms, border-color 200ms; }
.ghost { border-color: transparent; color: var(--muted); }
.ghost:hover { color: var(--ink); }
.btn:hover { background: var(--ink); color: var(--paper); }
.btn--primary { background: var(--accent); border-color: var(--accent); color: var(--paper); }
.btn--primary:hover { background: var(--ink); border-color: var(--ink); }

/* chapter dots */
.dots { position: fixed; z-index: 20; right: 22px; top: 50%; transform: translateY(-50%); display: flex; flex-direction: column; gap: 6px; }
.dots a { display: flex; align-items: center; justify-content: flex-end; gap: 10px; min-height: 28px; color: var(--muted); text-decoration: none; font: 400 0.95rem/1 var(--display); text-transform: uppercase; letter-spacing: 0.05em; }
.dots a::after { content: ""; width: 8px; height: 8px; border: 1px solid currentColor; transform: rotate(45deg); transition: background-color 200ms, transform 300ms; }
.dots a span { opacity: 0; transform: translateX(6px); transition: opacity 200ms, transform 200ms; }
.dots a:hover span, .dots a:focus-visible span, .dots a[aria-current="step"] span { opacity: 1; transform: none; }
.dots a[aria-current="step"] { color: var(--accent); }
.dots a[aria-current="step"]::after { background: var(--accent); transform: rotate(45deg) scale(1.3); }

.hint { position: fixed; z-index: 20; left: 50%; bottom: 22px; transform: translateX(-50%); color: var(--muted); font: 400 1rem/1 var(--display); text-transform: uppercase; letter-spacing: 0.08em; transition: opacity 500ms; white-space: nowrap; }
.hint.is-gone { opacity: 0; }

/* chapters */
main { position: relative; z-index: 10; pointer-events: none; }
.ch { min-height: 100vh; min-height: 100svh; display: flex; align-items: center; padding: 96px var(--gutter); }
.card { pointer-events: auto; width: min(460px, 100%); padding: 28px 28px 24px; background: var(--glass); border: 1px solid var(--rule); backdrop-filter: blur(14px) saturate(1.2); -webkit-backdrop-filter: blur(14px) saturate(1.2); display: grid; gap: 16px; opacity: 0.35; transform: translateY(24px); transition: opacity 600ms ease, transform 700ms cubic-bezier(0.16, 1, 0.3, 1); }
.ch.is-active .card { opacity: 1; transform: none; }
.card--hero { width: min(560px, 100%); background: transparent; border-color: transparent; backdrop-filter: none; -webkit-backdrop-filter: none; padding-left: 0; }
.kicker { color: var(--accent); font: 400 1.1rem/1 var(--display); text-transform: uppercase; letter-spacing: 0.06em; }
.year { display: block; color: var(--accent); font-size: 0.5em; font-weight: 400; letter-spacing: 0.04em; margin-bottom: 6px; }
.lead { font-size: 1.15rem; line-height: 1.45; color: #d6cfc4; }
.chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.chips a { display: inline-block; padding: 6px 10px; border: 1px solid var(--rule); font-size: 0.9rem; text-decoration: none; transition: border-color 200ms, color 200ms; }
.chips a:hover { border-color: var(--accent); color: var(--accent); }
.facts { margin: 0; display: grid; gap: 0; border-top: 1px solid var(--rule); }
.facts div { display: flex; justify-content: space-between; gap: 16px; padding: 8px 0; border-bottom: 1px solid var(--rule); }
.facts dt { color: var(--muted); font-size: 0.9rem; }
.facts dd { margin: 0; text-align: right; font-size: 0.95rem; }
.links { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.links a { text-underline-offset: 0.2em; text-decoration-thickness: 1px; }
.links a:hover { color: var(--accent); }
.actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* world clicks pass through empty space */
body.is-hovering-3d { cursor: pointer; }

/* no webgl: plain dark page */
.no-webgl .world, .no-webgl .hint { display: none; }
.no-webgl .card { opacity: 1; transform: none; }

@media (max-width: 48rem) {
  :root { --gutter: 16px; }
  .ch { align-items: flex-end; padding-bottom: 72px; }
  .card { padding: 20px; gap: 12px; }
  .card--hero { padding-left: 0; }
  .lead { font-size: 1.02rem; }
  .dots { right: 8px; }
  .dots a span { display: none; }
  .ghost { display: none; }
  .hint { bottom: 12px; font-size: 0.85rem; }
  .facts dd { font-size: 0.88rem; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .card { transition: none; }
}