/* ============ OPEN · Module 3 deck · design system ============ */
@font-face { font-family: "Fraunces"; src: url(../fonts/fraunces-latin-300-normal.woff2) format("woff2"); font-weight: 300; }
@font-face { font-family: "Fraunces"; src: url(../fonts/fraunces-latin-400-normal.woff2) format("woff2"); font-weight: 400; }
@font-face { font-family: "Fraunces"; src: url(../fonts/fraunces-latin-600-normal.woff2) format("woff2"); font-weight: 600; }
@font-face { font-family: "Fraunces"; src: url(../fonts/fraunces-latin-700-normal.woff2) format("woff2"); font-weight: 700; }
@font-face { font-family: "Fraunces"; src: url(../fonts/fraunces-latin-400-italic.woff2) format("woff2"); font-weight: 400; font-style: italic; }
@font-face { font-family: "Fraunces"; src: url(../fonts/fraunces-latin-300-italic.woff2) format("woff2"); font-weight: 300; font-style: italic; }
@font-face { font-family: "Inter"; src: url(../fonts/inter-latin-300-normal.woff2) format("woff2"); font-weight: 300; }
@font-face { font-family: "Inter"; src: url(../fonts/inter-latin-400-normal.woff2) format("woff2"); font-weight: 400; }
@font-face { font-family: "Inter"; src: url(../fonts/inter-latin-500-normal.woff2) format("woff2"); font-weight: 500; }
@font-face { font-family: "Inter"; src: url(../fonts/inter-latin-600-normal.woff2) format("woff2"); font-weight: 600; }
@font-face { font-family: "Inter"; src: url(../fonts/inter-latin-700-normal.woff2) format("woff2"); font-weight: 700; }
@font-face { font-family: "JBM"; src: url(../fonts/jetbrains-mono-latin-400-normal.woff2) format("woff2"); font-weight: 400; }
@font-face { font-family: "JBM"; src: url(../fonts/jetbrains-mono-latin-500-normal.woff2) format("woff2"); font-weight: 500; }
@font-face { font-family: "JBM"; src: url(../fonts/jetbrains-mono-latin-700-normal.woff2) format("woff2"); font-weight: 700; }

:root {
  --bg: #07080b;
  --bg-2: #0d0f14;
  --panel: #12151c;
  --line: rgba(236, 232, 223, 0.12);
  --line-2: rgba(236, 232, 223, 0.22);
  --ink: #ece8df;
  --ink-2: #b9b6ae;
  --dim: #7d828c;
  --faint: #4a4f59;
  --amber: #f2b84b;
  --amber-soft: rgba(242, 184, 75, 0.14);
  --red: #ff6b5e;
  --green: #5fd39a;
  --blue: #6aa8ff;
  /* family colours */
  --openai: #19c37d;
  --anthropic: #e07a53;
  --google: #5b9cff;
  --gemma: #8fc1ff;
  --cohere: #ff8a73;
  --mistral: #ff7a1a;
  --meta: #3d8bff;
  --deepseek: #6c7cff;
  --qwen: #a07bff;
  --china: #ff5f6d;
  --india: #ff9b3d;
  --serif: "Fraunces", "Iowan Old Style", Georgia, serif;
  --sans: "Inter", -apple-system, "Helvetica Neue", Arial, sans-serif;
  --mono: "JBM", "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { width: 100%; height: 100%; background: #000; overflow: hidden; }
body { font-family: var(--sans); color: var(--ink); -webkit-font-smoothing: antialiased; }

/* ---------- the 1920×1080 stage, scaled to fit ---------- */
#viewport { position: fixed; inset: 0; background: #000; overflow: hidden; }
#stage {
  position: absolute; left: 50%; top: 50%; width: 1920px; height: 1080px; overflow: hidden;
  background: radial-gradient(120% 90% at 50% 40%, var(--bg-2) 0%, var(--bg) 60%, #040507 100%);
  transform-origin: center center;
}
#scene { position: absolute; inset: 0; }

/* film finishing */
#grain { position: absolute; inset: -50%; width: 200%; height: 200%; pointer-events: none; opacity: 0.07; mix-blend-mode: overlay; z-index: 50; }
#vignette { position: absolute; inset: 0; pointer-events: none; z-index: 49;
  background: radial-gradient(110% 85% at 50% 45%, transparent 55%, rgba(0,0,0,0.55) 100%); }
#blackout { position: absolute; inset: 0; background: #000; z-index: 90; opacity: 0; pointer-events: none; transition: opacity .4s; }
#blackout.on { opacity: 1; }

/* chrome: chapter label + timeline ribbon */
#chrome-chapter { position: absolute; top: 44px; left: 72px; z-index: 40; font-family: var(--mono); font-size: 15px;
  letter-spacing: .22em; text-transform: uppercase; color: var(--dim); display: flex; gap: 18px; align-items: center; }
#chrome-chapter .num { color: var(--amber); }
#chrome-chapter .opt { color: var(--faint); border: 1px solid var(--faint); padding: 2px 8px; border-radius: 4px; font-size: 12px; letter-spacing: .12em; }
#ribbon { position: absolute; left: 72px; right: 72px; bottom: 40px; height: 34px; z-index: 40; opacity: .9; }
#ribbon .track { position: absolute; left: 0; right: 0; top: 10px; height: 1px; background: var(--line-2); }
#ribbon .tick { position: absolute; top: 4px; width: 1px; height: 13px; background: var(--line-2); }
#ribbon .yr { position: absolute; top: 20px; transform: translateX(-50%); font-family: var(--mono); font-size: 12px; color: var(--faint); letter-spacing: .08em; }
#ribbon .yr.on { color: var(--amber); }
#ribbon .marker { position: absolute; top: 3px; width: 15px; height: 15px; margin-left: -7.5px; border-radius: 50%;
  background: var(--amber); box-shadow: 0 0 0 5px var(--amber-soft), 0 0 22px rgba(242,184,75,.6); transition: left .9s cubic-bezier(.6,0,.2,1), opacity .4s; }
#ribbon .span { position: absolute; top: 8px; height: 5px; background: var(--amber); opacity: .35; border-radius: 3px; transition: left .9s, width .9s; }
#ribbon.hidden { opacity: 0; }
#chrome-chapter.hidden { opacity: 0; }

/* director's cut badge */
#dc-badge { position: absolute; top: 40px; right: 72px; z-index: 41; font-family: var(--mono); font-size: 13px; letter-spacing: .2em;
  color: var(--bg); background: var(--amber); padding: 6px 12px; border-radius: 4px; display: none; }
#dc-badge.on { display: block; }

/* ---------- typography primitives ---------- */
.kicker { font-family: var(--mono); font-size: 18px; letter-spacing: .24em; text-transform: uppercase; color: var(--amber); }
.h-xl { font-family: var(--serif); font-weight: 400; font-size: 128px; line-height: 1.0; letter-spacing: -0.02em; }
.h-lg { font-family: var(--serif); font-weight: 400; font-size: 84px; line-height: 1.06; letter-spacing: -0.015em; }
.h-md { font-family: var(--serif); font-weight: 400; font-size: 58px; line-height: 1.12; letter-spacing: -0.01em; }
.h-sm { font-family: var(--serif); font-weight: 400; font-size: 40px; line-height: 1.2; }
.body-lg { font-size: 34px; line-height: 1.4; color: var(--ink-2); font-weight: 300; }
.body { font-size: 26px; line-height: 1.45; color: var(--ink-2); font-weight: 300; }
.mono { font-family: var(--mono); }
.dim { color: var(--dim); } .faint { color: var(--faint); } .amber { color: var(--amber); } .red { color: var(--red); } .green { color: var(--green); }
em { font-style: italic; font-family: var(--serif); }

.abs { position: absolute; }
.center { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.pad { position: absolute; left: 160px; right: 160px; top: 150px; bottom: 140px; }
.hide { opacity: 0; }

/* quote card (recreated documents) */
.quote { position: relative; padding: 46px 56px 40px; border-left: 3px solid var(--amber); background: linear-gradient(90deg, rgba(242,184,75,.06), transparent 70%); }
.quote .q { font-family: var(--serif); font-weight: 300; font-size: 46px; line-height: 1.28; color: var(--ink); font-style: italic; }
.quote .src { margin-top: 26px; font-family: var(--mono); font-size: 17px; letter-spacing: .1em; color: var(--dim); text-transform: uppercase; }
.quote .src b { color: var(--ink-2); font-weight: 500; }

/* source stamp on every number */
.source { font-family: var(--mono); font-size: 14px; letter-spacing: .06em; color: var(--faint); }
.source::before { content: "SOURCE · "; color: var(--dim); }

/* cards */
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 34px 36px; }
.card .t { font-family: var(--serif); font-size: 38px; margin-bottom: 12px; }
.card .d { font-size: 22px; line-height: 1.45; color: var(--ink-2); font-weight: 300; }
.chip { display: inline-flex; align-items: center; gap: 10px; padding: 8px 16px; border-radius: 999px; border: 1px solid var(--line-2);
  font-family: var(--mono); font-size: 18px; letter-spacing: .04em; color: var(--ink); white-space: nowrap; }
.chip i { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }

/* belief-that-broke card */
.belief { font-family: var(--serif); font-size: 76px; line-height: 1.1; position: relative; display: inline-block; }
.belief .strike { position: absolute; left: -2%; top: 52%; height: 6px; width: 0; background: var(--red); border-radius: 3px; transform: rotate(-1.5deg); }
.lesson { font-size: 38px; line-height: 1.35; color: var(--ink); font-weight: 400; max-width: 1350px; }

/* big numbers */
.bignum { font-family: var(--serif); font-weight: 300; font-size: 190px; line-height: .9; letter-spacing: -0.03em; }
.bignum small { font-size: .32em; letter-spacing: 0; color: var(--dim); font-family: var(--sans); font-weight: 300; }

/* typewriter caret */
.caret::after { content: "▍"; color: var(--amber); animation: blink 1s steps(1) infinite; margin-left: 4px; }
@keyframes blink { 50% { opacity: 0; } }

/* svg helpers */
svg text { font-family: var(--mono); }
.tok { font-family: var(--mono); }

/* overlay: scene picker */
#picker { position: fixed; inset: 0; z-index: 200; background: rgba(4,5,7,.94); display: none; overflow: auto; padding: 60px 80px; font-family: var(--mono); }
#picker.on { display: block; }
#picker h3 { color: var(--amber); font-weight: 400; letter-spacing: .2em; font-size: 14px; margin: 26px 0 10px; }
#picker a { display: inline-block; margin: 4px 10px 4px 0; padding: 6px 12px; border: 1px solid var(--line-2); border-radius: 6px; color: var(--ink-2); text-decoration: none; font-size: 14px; }
#picker a.opt { border-style: dashed; color: var(--dim); }
#picker a.cur { background: var(--amber); color: #000; }
#toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); z-index: 210; font-family: var(--mono); font-size: 13px; color: var(--ink);
  background: rgba(20,22,28,.95); border: 1px solid var(--line-2); padding: 8px 14px; border-radius: 6px; opacity: 0; transition: opacity .3s; pointer-events: none; }
#toast.on { opacity: 1; }