:root{
  --ink:#f4f6fb; --dim:#9aa7bd; --brand:#244df7; --bg:#070b14;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Arial,sans-serif;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans)}
body{
  background:
    radial-gradient(1200px 800px at 78% 8%, rgba(36,77,247,.16), transparent 62%),
    radial-gradient(900px 700px at 12% 82%, rgba(36,77,247,.10), transparent 60%),
    var(--bg);
  min-height:100vh;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:1;opacity:.32;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(80% 60% at 50% 40%,#000 40%,transparent 100%);
}

/* ---------- Bühne ---------- */
.buehne{
  position:fixed;inset:0;z-index:0;
}
.buehne canvas{display:block;width:100%!important;height:100%!important}

/* ---------- HUD ---------- */
.hud{
  position:fixed;top:0;left:0;right:0;z-index:5;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:18px clamp(16px,3vw,40px);
  font-family:var(--mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--dim);pointer-events:none;
}
.hud__marke{color:#fff;letter-spacing:.22em;font-weight:600}
.hud__mitte{opacity:.85;font-variant-numeric:tabular-nums}
.hud__varianten{display:flex;gap:6px;pointer-events:auto}
.hud__varianten a{
  color:var(--dim);text-decoration:none;padding:6px 10px;border:1px solid rgba(255,255,255,.14);
  border-radius:999px;letter-spacing:.12em;font-size:10px;
}
.hud__varianten a:hover{color:#fff;border-color:rgba(255,255,255,.4)}
.hud__varianten a.ist-aktiv{color:#fff;background:var(--brand);border-color:var(--brand)}
.hud__balken{position:fixed;top:0;left:0;right:0;height:2px;background:rgba(255,255,255,.08);z-index:6}
.hud__balken > div{height:100%;background:var(--brand);transform-origin:left;transform:scaleX(.11);transition:transform .5s ease}

/* ---------- Text-Szenen ---------- */
main{position:relative;z-index:3}
.szene{
  min-height:100vh;display:flex;align-items:center;
  padding:clamp(24px,6vw,90px);
  pointer-events:none;
}
.karte{
  max-width:min(46ch,92vw);
  opacity:0;transform:translateY(26px);
  transition:opacity .6s ease, transform .6s cubic-bezier(.2,.7,.2,1);
}
.szene.ist-aktiv .karte{opacity:1;transform:none}
.karte--rechts{margin-left:auto;text-align:right}
.karte--mitte{margin:0 auto;text-align:center}
.kicker{
  margin:0 0 14px;font-family:var(--mono);font-size:11px;letter-spacing:.22em;
  text-transform:uppercase;color:#7f93c9;
}
h1,h2{margin:0;font-weight:700;letter-spacing:-.035em;line-height:.98}
h1{font-size:clamp(2.4rem,5.6vw,4.4rem)}
h2{font-size:clamp(1.9rem,3.6vw,3rem)}
.text{margin:18px 0 0;color:#b7c2d6;font-size:clamp(1rem,1.25vw,1.125rem);line-height:1.55}
.hinweis{margin-top:34px;font-family:var(--mono);font-size:11px;letter-spacing:.2em;color:var(--dim);animation:blink 2.4s ease-in-out infinite}
@keyframes blink{0%,100%{opacity:.35}50%{opacity:1}}
.btn{
  display:inline-block;margin-top:26px;padding:14px 22px;border-radius:999px;background:var(--brand);
  color:#fff;text-decoration:none;font-weight:600;font-size:15px;pointer-events:auto;
}
.btn:hover{filter:brightness(1.08)}

/* Auf schmalen Screens: Gerät oben, Text unten */
@media (max-width:760px){
  .karte, .karte--rechts, .karte--mitte{margin:0;text-align:left;max-width:none}
  .szene{align-items:flex-end;padding-bottom:12vh}
  .buehne{height:64vh}
  .buehne canvas{height:64vh!important}
}

@media (prefers-reduced-motion: reduce){
  .karte{transition:none;opacity:1;transform:none}
  .hinweis{animation:none}
}

/* Modell-Credit (CC BY 4.0 verlangt Namensnennung) */
.credits{
  position:fixed;left:clamp(16px,3vw,40px);bottom:12px;z-index:5;
  font-family:var(--mono);font-size:9px;letter-spacing:.04em;color:#4d5a72;
  max-width:min(38ch,52vw);line-height:1.45;
}
.credits a{color:#7f93c9;text-decoration:none}
.credits a:hover{text-decoration:underline}
@media (max-width:760px){ .credits{bottom:8px;font-size:9px} }

/* Ladezustand, bis Modell + Texturen bereit sind */
.laden{
  position:fixed;inset:0;z-index:60;display:grid;place-content:center;justify-items:center;gap:16px;
  background:radial-gradient(120% 90% at 50% 40%,#0d1424 0%,#05070c 70%);
  transition:opacity .7s ease,visibility .7s;
}
.laden.weg{opacity:0;visibility:hidden}
.laden__ring{
  width:26px;height:26px;border-radius:50%;
  border:1.5px solid rgba(120,150,255,.22);border-top-color:#5b7cff;
  animation:laden-dreh .9s linear infinite;
}
.laden__text{
  font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:#5d6c8a;margin:0;
}
@keyframes laden-dreh{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion: reduce){ .laden__ring{animation:none} }