/* AURELIA — living digital organism · narrative layer */

:root{
  --bg:#020509;
  --ink:#eaf6f2;
  --dim:rgba(234,246,242,.58);
  --faint:rgba(234,246,242,.34);
  --teal:#58f2d4;
  --gold:#ffd9a0;
  --coral:#ff9d7a;
  --serif:'Cormorant Garamond',Georgia,'Times New Roman',serif;
  --label:'Space Grotesk',system-ui,-apple-system,'Segoe UI',sans-serif;
  --mono:ui-monospace,'SF Mono',SFMono-Regular,Menlo,Consolas,monospace;
  --hair:rgba(88,242,212,.28);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
html:focus-within{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--ink);
  font-family:var(--serif);font-weight:300;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
::selection{background:rgba(88,242,212,.32);color:#fff}
::-webkit-scrollbar{width:9px}
::-webkit-scrollbar-track{background:#020509}
::-webkit-scrollbar-thumb{background:rgba(88,242,212,.25);border-radius:9px;border:2px solid #020509}
::-webkit-scrollbar-thumb:hover{background:rgba(88,242,212,.5)}

.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

.skip{
  position:fixed;top:-100px;left:16px;z-index:200;
  font-family:var(--label);font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  color:#03130f;background:var(--teal);padding:10px 16px;border-radius:3px;
  transition:top .2s;
}
.skip:focus{top:14px}

/* ---------- stage ---------- */
#stage{position:fixed;inset:0;z-index:0;background:#020509}
#gl{width:100%;height:100%;display:block;opacity:0;transition:opacity 1.6s ease .1s}
body.ready #gl{opacity:1}
#glvignette{
  position:fixed;inset:0;z-index:1;pointer-events:none;
  background:
    radial-gradient(120% 90% at 50% 42%,transparent 55%,rgba(1,3,7,.55) 100%),
    linear-gradient(to bottom,rgba(1,3,7,.5),transparent 12%,transparent 88%,rgba(1,3,7,.6));
}
body.calm #glvignette{background:
    radial-gradient(120% 90% at 50% 42%,transparent 60%,rgba(1,3,7,.66) 100%),
    linear-gradient(to bottom,rgba(1,3,7,.55),transparent 14%,transparent 86%,rgba(1,3,7,.65))}

/* ---------- preloader ---------- */
#preloader{
  position:fixed;inset:0;z-index:100;background:#020509;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:26px;
  transition:opacity 1.1s ease,visibility 1.1s;
}
#preloader.done{opacity:0;visibility:hidden;pointer-events:none}
.seed{position:relative;width:14px;height:14px}
.seed i{
  position:absolute;inset:0;border-radius:50%;background:var(--teal);
  animation:pulse 2.4s ease-in-out infinite;
  box-shadow:0 0 18px 2px rgba(88,242,212,.65),0 0 60px 8px rgba(88,242,212,.22);
}
.seed i:nth-child(2){animation-delay:.3s;background:var(--gold);box-shadow:0 0 14px 2px rgba(255,217,160,.5);transform:scale(.5)}
.seed i:nth-child(3){animation-delay:.6s;transform:scale(.66);background:#8adcff;box-shadow:0 0 14px 2px rgba(138,220,255,.5)}
.seed i:nth-child(4){animation-delay:.9s;transform:scale(.4);background:#fff;box-shadow:0 0 10px 2px rgba(255,255,255,.45)}
.seed i:nth-child(5){animation-delay:1.2s;transform:scale(.55);background:var(--coral);box-shadow:0 0 12px 2px rgba(255,157,122,.45)}
@keyframes pulse{0%,100%{opacity:.25}50%{opacity:1}}
#bootmsg{font-family:var(--mono);font-size:10px;letter-spacing:.34em;text-transform:uppercase;color:var(--faint)}

/* ---------- HUD ---------- */
#hud{
  position:fixed;top:0;left:0;right:0;z-index:40;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 26px;
  opacity:0;transform:translateY(-8px);transition:opacity 1.2s ease .4s,transform 1.2s ease .4s;
}
body.ready #hud{opacity:1;transform:none}
.hud-brand{font-family:var(--label);font-weight:500;font-size:13px;letter-spacing:.42em;color:var(--ink);display:flex;align-items:center;gap:9px}
.hud-live{width:5px;height:5px;border-radius:50%;background:var(--teal);box-shadow:0 0 8px var(--teal);animation:pulse 3.8s ease-in-out infinite}
.hud-chapters{display:flex;gap:6px}
.hud-chapters button{
  appearance:none;background:none;border:0;cursor:pointer;
  width:26px;height:22px;display:grid;place-items:center;position:relative;
}
.hud-chapters button::after{
  content:"";width:5px;height:5px;border-radius:4px;
  background:var(--faint);transition:all .45s cubic-bezier(.22,1,.36,1);
}
.hud-chapters button:hover::after{background:var(--dim)}
.hud-chapters button[aria-current]::after{
  width:20px;background:var(--teal);box-shadow:0 0 10px rgba(88,242,212,.8);
}
.hud-chapters button:focus-visible{outline:2px solid var(--teal);outline-offset:2px;border-radius:4px}
.hud-right{display:flex;align-items:center;gap:20px}
.hud-vitals{font-family:var(--mono);font-size:9.5px;letter-spacing:.12em;color:var(--faint);text-transform:uppercase;white-space:nowrap}
.hud-vitals b{color:var(--dim);font-weight:400}
.hud-buttons{display:flex;gap:8px}
.hud-buttons button{
  appearance:none;cursor:pointer;
  font-family:var(--label);font-weight:500;font-size:9.5px;letter-spacing:.18em;
  color:var(--dim);background:rgba(4,13,17,.38);
  border:1px solid rgba(88,242,212,.22);border-radius:3px;
  padding:7px 11px;transition:color .3s,border-color .3s,background .3s,box-shadow .3s;
}
.hud-buttons button:hover{color:var(--ink);border-color:rgba(88,242,212,.55);box-shadow:0 0 16px rgba(88,242,212,.15)}
.hud-buttons button:focus-visible{outline:2px solid var(--teal);outline-offset:2px}
.hud-buttons button[aria-pressed="true"]{background:rgba(88,242,212,.92);color:#03130f;border-color:transparent}
#btn-help{width:31px}

/* ---------- narrative ---------- */
#narrative{position:relative;z-index:10}
.chapter{position:relative;min-height:165vh}
.chapter.hero{min-height:118vh}
.chapter.finale{min-height:130vh}
.ch-inner{
  position:sticky;top:0;z-index:0;min-height:100vh;
  display:flex;flex-direction:column;justify-content:center;
  padding:0 8vw;
}
.ch-inner.center{align-items:center;text-align:center}
.ch-inner.right{align-items:flex-end;text-align:right}
.ch-prose{max-width:34rem}

.ch-inner::before{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
}
.ch-inner.left::before{background:linear-gradient(to right,rgba(1,5,9,.82),rgba(1,5,9,.5) 34%,transparent 68%)}
.ch-inner.right::before{background:linear-gradient(to left,rgba(1,5,9,.82),rgba(1,5,9,.5) 34%,transparent 68%)}
.ch-inner.center::before{background:radial-gradient(58% 64% at 50% 52%,rgba(1,5,9,.85),rgba(1,5,9,.45) 62%,transparent 78%)}
.ch-inner.hero-inner::before{background:radial-gradient(64% 60% at 50% 46%,rgba(1,5,9,.42),rgba(1,5,9,.12) 62%,transparent 82%)}

.ch-eyebrow{
  font-family:var(--label);font-weight:300;font-size:11px;
  letter-spacing:.5em;text-transform:uppercase;color:var(--teal);
  margin-bottom:18px;opacity:.85;
}
.ch-title{
  font-family:var(--serif);font-weight:600;
  font-size:clamp(3rem,7vw,5rem);line-height:1.02;letter-spacing:.02em;
  margin-bottom:26px;
  text-shadow:0 2px 40px rgba(0,0,0,.6);
}
.ch-prose{
  font-size:clamp(1.18rem,1.6vw,1.42rem);line-height:1.62;color:var(--ink);
  text-shadow:0 1px 18px rgba(0,2,4,.9),0 0 46px rgba(0,2,4,.75),0 0 110px rgba(0,2,4,.5);
  margin-bottom:30px;
}
.ch-prose em{font-style:italic;color:var(--gold)}
.hint{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--faint);display:flex;align-items:center;gap:8px;
}
.ch-inner.right .hint{justify-content:flex-end}
.kbd{
  font-family:var(--mono);font-size:9.5px;color:var(--dim);
  border:1px solid rgba(234,246,242,.25);border-bottom-width:2px;border-radius:3px;
  padding:2px 6px;background:rgba(234,246,242,.06);
}

/* hero */
.hero-inner{align-items:center;text-align:center;min-height:100vh}
.overline{
  font-family:var(--label);font-weight:300;font-size:10.5px;letter-spacing:.52em;
  text-transform:uppercase;color:var(--dim);margin-bottom:34px;
}
.hero-title{
  font-family:var(--serif);font-weight:600;
  font-size:clamp(4.2rem,15vw,12.5rem);line-height:.95;letter-spacing:.04em;
  margin-bottom:30px;
  background:linear-gradient(105deg,#bffbe9 8%,#eafff8 30%,#fff8ea 55%,var(--gold) 82%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  filter:drop-shadow(0 4px 60px rgba(88,242,212,.25));
}
.hero-sub{
  font-size:clamp(1.2rem,1.8vw,1.5rem);font-style:italic;color:var(--dim);
  margin-bottom:44px;text-shadow:0 1px 22px rgba(0,0,0,.7);
}
.hero .hint{justify-content:center}

/* finale */
.finale-title{
  font-family:var(--serif);font-weight:600;font-size:clamp(2.6rem,6vw,4.4rem);
  margin-bottom:20px;
}
.restart{
  appearance:none;cursor:pointer;margin-top:34px;
  font-family:var(--label);font-weight:500;font-size:11px;letter-spacing:.3em;text-transform:uppercase;
  color:var(--teal);background:transparent;
  border:1px solid rgba(88,242,212,.45);border-radius:3px;padding:15px 30px;
  transition:all .35s;
}
.restart:hover{background:rgba(88,242,212,.12);box-shadow:0 0 30px rgba(88,242,212,.25);color:#cffef0}
.restart:focus-visible{outline:2px solid var(--teal);outline-offset:3px}
.colophon{
  margin-top:64px;font-family:var(--mono);font-size:9.5px;letter-spacing:.14em;
  line-height:2;text-transform:uppercase;color:var(--faint);
}

/* reveal animation */
.ch-inner>*,.hero-inner>*{opacity:0;transform:translateY(26px);
  transition:opacity 1.1s cubic-bezier(.22,1,.36,1),transform 1.1s cubic-bezier(.22,1,.36,1)}
.ch-inner.on>*,.hero-inner.on>*{opacity:1;transform:none}
.ch-inner.on>*:nth-child(1){transition-delay:.05s}
.ch-inner.on>*:nth-child(2){transition-delay:.16s}
.ch-inner.on>*:nth-child(3){transition-delay:.3s}
.ch-inner.on>*:nth-child(4){transition-delay:.46s}
body.calm .ch-inner>*,body.calm .hero-inner>*{transform:none;transition:opacity .6s ease}

/* ---------- help dialog ---------- */
#help{position:fixed;inset:0;z-index:120;display:grid;place-items:center;
  background:rgba(1,4,8,.72);backdrop-filter:blur(6px)}
#help[hidden]{display:none}
.help-card{
  width:min(92vw,30rem);background:rgba(3,11,15,.96);
  border:1px solid rgba(88,242,212,.25);border-radius:6px;
  padding:34px 34px 28px;box-shadow:0 30px 90px rgba(0,0,0,.6),0 0 60px rgba(88,242,212,.07);
}
.help-card h2{font-family:var(--mono);font-size:11px;letter-spacing:.3em;text-transform:uppercase;
  color:var(--teal);margin-bottom:22px}
.help-list{display:grid;grid-template-columns:auto 1fr;gap:9px 18px;margin-bottom:26px}
.help-list dt{font-family:var(--mono);font-size:10px;color:var(--gold);letter-spacing:.08em;white-space:nowrap}
.help-list dd{font-family:var(--label);font-weight:300;font-size:12.5px;color:var(--dim);letter-spacing:.04em}

/* ---------- fallbacks ---------- */
#fallback{position:relative;z-index:5;padding:24vh 8vw 10vh;max-width:44rem}
#fallback h2{font-weight:600;font-size:2.4rem;margin-bottom:18px}
#fallback p{color:var(--dim);font-size:1.25rem;line-height:1.6}
#fallback .overline{margin-bottom:22px}
body.no-webgl #stage,body.no-webgl #preloader{display:none}
body.no-webgl{background:
  radial-gradient(80% 60% at 50% -10%,rgba(88,242,212,.14),transparent 60%),
  radial-gradient(60% 50% at 80% 110%,rgba(255,217,160,.1),transparent 60%),#020509}
.noscript-note{position:relative;z-index:5;padding:18vh 8vw;font-family:var(--label);
  color:var(--dim);font-size:1.05rem;line-height:1.7;max-width:38rem}

/* ---------- responsive ---------- */
@media (max-width:760px){
  .ch-inner::before{background:linear-gradient(to bottom,rgba(1,5,9,.72),rgba(1,5,9,.6) 45%,rgba(1,5,9,.78))}
  .ch-inner.center::before{background:linear-gradient(to bottom,rgba(1,5,9,.7),rgba(1,5,9,.62) 50%,rgba(1,5,9,.82))}
  .ch-inner.left::before,.ch-inner.right::before{background:radial-gradient(85% 42% at 42% 54%,rgba(2,6,10,.86),rgba(2,6,10,.6) 55%,rgba(1,5,9,.55) 78%,rgba(1,5,9,.3))}
  .ch-inner.hero-inner::before{background:linear-gradient(to bottom,rgba(1,5,9,.55),rgba(1,5,9,.5) 50%,rgba(1,5,9,.75))}
  #hud{padding:14px 14px;flex-wrap:wrap}
  .hud-vitals{display:none}
  .hud-brand{font-size:11px;letter-spacing:.3em}
  .ch-inner{padding:0 7vw}
  .ch-inner.right{align-items:flex-start;text-align:left}
  .ch-inner.right .hint{justify-content:flex-start}
  .chapter{min-height:150vh}
  .ch-prose{font-size:1.14rem}
  .hint{font-size:9.5px;letter-spacing:.12em}
  .hud-chapters button{width:20px;height:18px}
}
@media (max-width:480px){
  .hud-buttons button{padding:6px 7px;font-size:8.5px}
  #btn-help{width:27px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .seed i,.hud-live{animation:none}
  .ch-inner>*,.hero-inner>*{transform:none;transition:opacity .5s ease}
}