/* ── AMRITA Gen 3 · THE MACHINE IN THE ROOM ─────────────────────────────
   Five design dictates, never six:
   1. near-black ground   2. ONE accent (warm amber)   3. one type pairing
   4. damped smooth scroll   5. copy tone: quiet, expensive, very few words
   ──────────────────────────────────────────────────────────────────── */

:root{
  --ink:#050505;
  --amber:#e9a552;
  --amber-dim:rgba(233,165,82,.55);
  --amber-ghost:rgba(233,165,82,.14);
  --paper:#e8e4dd;
  --paper-dim:rgba(232,228,221,.52);
  --paper-ghost:rgba(232,228,221,.14);

  --serif:"Instrument Serif",Georgia,"Times New Roman",serif;
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;

  --gut:clamp(20px,5vw,72px);
}

*,*::before,*::after{box-sizing:border-box}
body{
  margin:0;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--sans);
  font-weight:300;
  -webkit-font-smoothing:antialiased;
  overflow-x:clip;   /* not `hidden` — that turns body into a scroll box */
}
::selection{background:var(--amber);color:#0a0705}

/* ── Film layer ────────────────────────────────────────────────── */
.stage{position:fixed;inset:0;z-index:0;pointer-events:none;background:var(--ink)}
.stage__frame{position:absolute;inset:0;overflow:hidden}
.stage video{
  position:absolute;top:50%;left:50%;
  width:100%;height:100%;
  transform:translate(-50%,-50%) scale(1.02);
  object-fit:cover;
  will-change:transform;
}
/* Vignette — centres the eye and buys room for type */
.stage__vignette{
  position:absolute;inset:0;
  background:
    radial-gradient(120% 85% at 50% 45%,transparent 30%,rgba(3,3,3,.55) 78%,rgba(3,3,3,.9) 100%),
    linear-gradient(to bottom,rgba(3,3,3,.72) 0%,transparent 26%,transparent 68%,rgba(3,3,3,.86) 100%),
    linear-gradient(to right,rgba(3,3,3,.66) 0%,transparent 46%);
}
/* Film grain */
.stage__grain{
  position:absolute;inset:-120%;
  opacity:.055;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grain 1.1s steps(4) infinite;
}
@keyframes grain{
  0%{transform:translate(0,0)}25%{transform:translate(-3%,2%)}
  50%{transform:translate(2%,-3%)}75%{transform:translate(-2%,-2%)}
  100%{transform:translate(0,0)}
}

/* ── HUD ───────────────────────────────────────────────────────── */
.hud{
  position:fixed;z-index:20;
  left:var(--gut);bottom:clamp(20px,4vh,40px);
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;
  color:var(--paper-dim);
  display:flex;flex-direction:column;gap:10px;
}
.hud__rail{width:clamp(90px,14vw,170px);height:1px;background:var(--paper-ghost);overflow:hidden}
.hud__fill{height:100%;width:100%;transform:scaleX(0);background:var(--amber);transform-origin:left center}
.hud__row{display:flex;align-items:baseline;gap:7px}
.hud__depth{color:var(--amber);font-size:13px;font-variant-numeric:tabular-nums}
.hud__sep,.hud__total{opacity:.4}
.hud__name{letter-spacing:.2em;margin-left:12px;color:var(--paper-dim)}
.hud__time{font-variant-numeric:tabular-nums;opacity:.34}

/* ── Nav ───────────────────────────────────────────────────────── */
.nav{
  position:fixed;z-index:20;top:0;left:0;right:0;
  display:flex;justify-content:space-between;align-items:center;
  padding:clamp(18px,3vh,30px) var(--gut);
}
.nav__mark{
  font-family:var(--mono);font-size:11px;letter-spacing:.24em;
  color:var(--paper-dim);text-decoration:none;text-transform:uppercase;
}
.nav__mark span{margin:0 .5em;color:var(--amber)}
.nav__cta{
  font-size:12px;letter-spacing:.06em;
  color:var(--paper);text-decoration:none;
  padding:9px 20px;border:1px solid var(--paper-ghost);border-radius:100px;
  transition:border-color .4s,color .4s,background .4s;
}
.nav__cta:hover{border-color:var(--amber-dim);color:var(--amber);background:var(--amber-ghost)}

/* ── Sections ──────────────────────────────────────────────────── */
main{position:relative;z-index:10}
.s{
  min-height:100svh;
  display:flex;align-items:center;
  padding:14vh var(--gut);
}
.wrap{width:100%;max-width:1180px;margin-inline:auto}

/* Entrance — damped, never bouncy */
.reveal{opacity:0;transform:translateY(26px);transition:opacity 1.1s cubic-bezier(.16,1,.3,1),transform 1.1s cubic-bezier(.16,1,.3,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.09s}.reveal.d2{transition-delay:.18s}.reveal.d3{transition-delay:.27s}

.eyebrow,.chapter{
  font-family:var(--mono);font-size:11px;letter-spacing:.26em;
  text-transform:uppercase;color:var(--amber);margin:0 0 clamp(20px,3vh,34px);
}
.chapter{color:var(--amber-dim)}

h1,h2{font-family:var(--serif);font-weight:400;margin:0;line-height:1.02;letter-spacing:-.015em}
.hero__title{font-size:clamp(46px,9.6vw,138px)}
.hero__title em{font-style:italic;color:var(--amber)}
.hero__sub{
  margin:clamp(24px,4vh,40px) 0 0;max-width:34ch;
  font-size:clamp(15px,1.8vw,21px);color:var(--paper-dim);font-weight:200;line-height:1.55;
}

/* Content panel per chamber — kept narrow so the image stays the hero */
.wrap--panel{max-width:620px;margin-inline:0}
.wrap--panel h2{font-size:clamp(32px,4.8vw,66px)}
.lede{
  margin:clamp(18px,2.6vh,28px) 0 0;max-width:40ch;
  font-size:clamp(14px,1.5vw,18px);line-height:1.65;color:var(--paper-dim);font-weight:200;
}
.lede--wide{max-width:56ch}

/* The one hard number per chamber */
.fig{
  margin-top:clamp(30px,5vh,52px);
  padding-top:22px;border-top:1px solid var(--paper-ghost);
  display:flex;align-items:baseline;gap:16px;flex-wrap:wrap;
}
.fig b{
  font-family:var(--serif);font-weight:400;font-size:clamp(36px,5.2vw,64px);
  color:var(--amber);line-height:1;font-variant-numeric:tabular-nums;
}
.fig span{font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--paper-dim);text-transform:uppercase}

/* Scroll cue — opposite corner from the HUD */
.scrollcue{
  position:absolute;bottom:clamp(26px,6vh,54px);right:var(--gut);
  display:flex;align-items:center;gap:12px;
  font-family:var(--mono);font-size:10px;letter-spacing:.22em;color:var(--paper-dim);
  text-transform:uppercase;
}
.scrollcue span{width:34px;height:1px;background:var(--paper-ghost);position:relative;overflow:hidden}
.scrollcue span::after{
  content:"";position:absolute;inset:0;background:var(--amber);
  animation:cue 2.4s cubic-bezier(.7,0,.3,1) infinite;
}
@keyframes cue{0%{transform:translateX(-100%)}60%,100%{transform:translateX(100%)}}
.s--hero{position:relative}

/* Manifesto */
.manifesto{font-size:clamp(36px,6.8vw,96px)}
.auth{display:flex;flex-wrap:wrap;gap:10px;margin:clamp(28px,4vh,44px) 0 0}
.auth span{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;
  padding:8px 14px;border:1px solid var(--paper-ghost);border-radius:2px;
  color:var(--paper-dim);position:relative;text-transform:uppercase;
}
.auth span::before,.auth span::after{
  content:"";position:absolute;width:5px;height:5px;border:1px solid var(--amber-dim);
}
.auth span::before{top:-1px;left:-1px;border-right:0;border-bottom:0}
.auth span::after{bottom:-1px;right:-1px;border-left:0;border-top:0}
.s--manifesto .lede{margin-top:clamp(26px,4vh,40px)}

/* Numbers */
.s--stats{min-height:auto;padding-block:18vh}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:1px;background:var(--paper-ghost);border:1px solid var(--paper-ghost)}
.stats>div{background:var(--ink);padding:clamp(24px,4vw,44px)}
.stats b{
  display:block;font-family:var(--serif);font-weight:400;
  font-size:clamp(34px,4.6vw,58px);color:var(--paper);line-height:1;
  font-variant-numeric:tabular-nums;
}
.stats span{
  display:block;margin-top:14px;font-family:var(--mono);font-size:10.5px;
  letter-spacing:.1em;color:var(--paper-dim);line-height:1.6;text-transform:uppercase;
}

/* CTA */
.s--cta{text-align:center;justify-content:center}
.s--cta .wrap{max-width:820px}
.cta__title{font-size:clamp(38px,7vw,96px)}
.btn{
  display:inline-block;margin-top:clamp(32px,5vh,54px);
  padding:17px 46px;border-radius:100px;
  background:var(--amber);color:#0a0705;text-decoration:none;
  font-size:15px;font-weight:500;letter-spacing:.02em;
  transition:transform .5s cubic-bezier(.16,1,.3,1),box-shadow .5s;
  box-shadow:0 0 0 rgba(233,165,82,0);
}
.btn:hover{transform:translateY(-2px);box-shadow:0 14px 46px rgba(233,165,82,.26)}
.fine{
  margin:clamp(40px,7vh,74px) 0 0;
  font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;color:var(--paper-dim);opacity:.55;
  text-transform:uppercase;
}

/* ── Mobile ────────────────────────────────────────────────────── */
@media (max-width:760px){
  .wrap--panel{max-width:none}
  .hud__name{display:none}
  .nav__cta{padding:8px 16px;font-size:11px}
  .stage video{transform:translate(-50%,-50%) scale(1.28)}
  .scrollcue{right:auto;left:var(--gut);bottom:auto;top:calc(100svh - 34vh)}
}

/* ── Reduced motion ────────────────────────────────────────────── */
@media (prefers-reduced-motion:reduce){
  .stage__grain,.scrollcue span::after{animation:none}
  .reveal{opacity:1;transform:none;transition:none}
}