/* ————————————————————————————————————————————————
   Raptor · interactive specimen — clean-room white
   museum plinth presentation
   ———————————————————————————————————————————————— */

:root{
  --paper:#f7f6f3;
  --paper-2:#f1efe9;
  --ink:#1d1b16;
  --ink-2:#55524a;
  --ink-3:#8a867a;
  --hair:#dcd8cd;
  --copper:#a86a34;
  --copper-deep:#8a5326;
  --steel:#3f4449;
  --glass:rgba(252,251,248,.86);
  --shadow:0 18px 50px -18px rgba(45,40,30,.28), 0 4px 14px -6px rgba(45,40,30,.12);
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,"Book Antiqua",Georgia,serif;
  --sans:system-ui,-apple-system,"Segoe UI","Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;
}

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

#app{position:fixed;inset:0}
#gl{position:absolute;inset:0}
#gl canvas{display:block;width:100%;height:100%;touch-action:none;outline:none}

/* soft photographic vignette — keeps white, adds depth */
#vignette{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(120% 90% at 50% 42%, transparent 55%, rgba(120,110,90,.10) 100%);
}

/* ————— masthead ————— */
#masthead{
  position:absolute;top:clamp(18px,4vh,44px);left:clamp(20px,4vw,56px);
  pointer-events:none;user-select:none;max-width:min(420px,70vw);
  opacity:0;animation:rise .9s .15s cubic-bezier(.2,.7,.2,1) forwards;
}
#masthead .eyebrow{
  font-size:10.5px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--ink-3);font-weight:600;
}
#masthead h1{
  font-family:var(--serif);
  font-weight:500;
  font-size:clamp(40px,6.4vw,74px);
  letter-spacing:.045em;line-height:1.02;
  margin:6px 0 10px;
  color:var(--ink);
}
#masthead .rule{
  display:flex;align-items:center;gap:12px;
  font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-3);
}
#masthead .rule::before{content:"";width:44px;height:1px;background:var(--copper);display:inline-block}

/* ————— numbered exhibit markers ————— */
#hotspot-layer{position:absolute;inset:0;overflow:hidden;pointer-events:none}
.marker{
  position:absolute;left:0;top:0;
  transform:translate(-50%,-50%);
  display:flex;align-items:center;gap:0;
  pointer-events:auto;cursor:pointer;
  background:none;border:none;padding:6px;
  font:inherit;
  transition:opacity .25s;
}
.marker .dot{
  width:26px;height:26px;border-radius:50%;
  border:1px solid rgba(29,27,22,.55);
  background:var(--glass);
  color:var(--ink);
  font-family:var(--mono);font-size:10.5px;font-weight:600;
  display:grid;place-items:center;
  box-shadow:0 2px 8px rgba(40,35,25,.16);
  backdrop-filter:blur(4px);
  transition:transform .22s cubic-bezier(.3,1.4,.4,1),background .2s,color .2s,border-color .2s;
}
.marker .tag{
  max-width:0;overflow:hidden;white-space:nowrap;
  font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);
  transition:max-width .35s cubic-bezier(.2,.7,.2,1),padding .35s;
}
.marker:hover .dot,.marker:focus-visible .dot{transform:scale(1.14);border-color:var(--copper);color:var(--copper-deep)}
.marker:hover .tag,.marker:focus-visible .tag{max-width:180px;padding-left:8px}
.marker.is-active .dot{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.marker.is-dim{opacity:.28}
.marker.is-hidden{opacity:0;pointer-events:none}
.marker .leader{
  position:absolute;left:50%;top:100%;width:1px;height:14px;
  background:linear-gradient(var(--ink-3),transparent);
  transform-origin:top;opacity:.5;
}
#hotspot-layer.is-off .marker{opacity:0;pointer-events:none}

/* ————— component card ————— */
.card{
  position:absolute;
  top:clamp(76px,12vh,120px);right:clamp(16px,3.4vw,48px);
  width:min(330px,86vw);
  background:var(--glass);
  border:1px solid var(--hair);
  border-radius:3px;
  box-shadow:var(--shadow);
  padding:22px 22px 18px;
  backdrop-filter:blur(14px) saturate(1.1);
  transform-origin:top right;
  animation:cardin .32s cubic-bezier(.2,.8,.25,1);
}
@keyframes cardin{from{opacity:0;transform:translateY(10px) scale(.97)}to{opacity:1}}
.card[hidden]{display:none}
.card-index{
  font-family:var(--mono);font-size:11px;color:var(--copper);
  letter-spacing:.2em;margin-bottom:4px;
}
.card h2{font-family:var(--serif);font-weight:500;font-size:24px;letter-spacing:.02em}
.card-role{
  margin-top:3px;font-size:10.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-3);
}
.card-body{margin-top:12px;font-size:13.5px;line-height:1.62;color:var(--ink-2)}
.card-specs{margin-top:14px;border-top:1px solid var(--hair);padding-top:10px;display:grid;grid-template-columns:auto 1fr;gap:4px 14px}
.card-specs dt{font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);padding-top:2px}
.card-specs dd{font-size:12.5px;color:var(--ink);font-variant-numeric:tabular-nums}
.card-close{
  position:absolute;top:8px;right:10px;width:28px;height:28px;
  border:none;background:none;font-size:19px;color:var(--ink-3);cursor:pointer;
  border-radius:50%;transition:color .2s,background .2s;
}
.card-close:hover{color:var(--ink);background:rgba(0,0,0,.05)}

/* ————— toolbar ————— */
#toolbar{
  position:absolute;left:50%;bottom:clamp(16px,3.6vh,34px);transform:translateX(-50%);
  display:flex;align-items:stretch;gap:2px;
  background:var(--glass);border:1px solid var(--hair);border-radius:4px;
  box-shadow:var(--shadow);backdrop-filter:blur(14px);
  padding:4px;
  opacity:0;animation:riseX .9s .45s cubic-bezier(.2,.7,.2,1) forwards;
}
.tool{
  display:flex;align-items:center;gap:8px;
  border:none;background:none;cursor:pointer;
  padding:9px 13px;font:inherit;color:var(--ink-2);
  font-size:11px;letter-spacing:.13em;text-transform:uppercase;font-weight:600;
  border-radius:2px;
  transition:background .18s,color .18s;
  min-height:40px;
}
.tool svg{width:15px;height:15px;flex:none}
.tool:hover{background:rgba(60,52,38,.07);color:var(--ink)}
.tool:focus-visible{outline:1.5px solid var(--copper);outline-offset:-1px}
.tool.is-on{color:var(--copper-deep)}
.tool.is-on svg{color:var(--copper)}
.tool.ignite.firing{color:#fff;background:var(--copper-deep)}
.tool.ignite.firing svg{color:#ffd9ae}
.tool-slider{
  display:flex;align-items:center;gap:9px;padding:0 13px;
  color:var(--ink-2);font-size:11px;letter-spacing:.13em;text-transform:uppercase;font-weight:600;
  border-radius:2px;min-height:40px;
}
.tool-slider svg{width:15px;height:15px;flex:none}
.tool-slider:hover{background:rgba(60,52,38,.07)}
#explode{
  -webkit-appearance:none;appearance:none;width:110px;height:2px;
  background:linear-gradient(90deg,var(--copper) var(--fill,0%),#cfcabf var(--fill,0%));
  border-radius:2px;cursor:ew-resize;outline-offset:4px;
}
#explode::-webkit-slider-thumb{
  -webkit-appearance:none;width:15px;height:15px;border-radius:50%;
  background:var(--paper);border:1.5px solid var(--ink-2);
  box-shadow:0 1px 4px rgba(0,0,0,.2);transition:transform .15s;
}
#explode::-webkit-slider-thumb:hover{transform:scale(1.15)}
#explode::-moz-range-thumb{width:13px;height:13px;border-radius:50%;background:var(--paper);border:1.5px solid var(--ink-2)}
#explode::-moz-range-track{height:2px;background:transparent}

/* ————— hint / help ————— */
.hint{
  position:absolute;left:50%;bottom:calc(clamp(16px,3.6vh,34px) + 62px);transform:translateX(-50%);
  font-size:10.5px;letter-spacing:.12em;color:var(--ink-3);text-transform:uppercase;
  white-space:nowrap;pointer-events:none;
  opacity:0;animation:riseX .9s .6s forwards, hintfade .8s 9s forwards;
  transition:opacity .4s;
}
@keyframes riseX{from{opacity:0;transform:translateX(-50%) translateY(14px)}to{opacity:1;transform:translateX(-50%)}}
@keyframes hintfade{to{opacity:.55}}
kbd{
  font-family:var(--mono);font-size:9.5px;
  border:1px solid var(--hair);border-bottom-width:2px;border-radius:3px;
  padding:1px 4px;margin:0 1px;background:#fff;color:var(--ink-2);
}
.help{position:absolute;inset:0;display:grid;place-items:center;background:rgba(247,246,243,.6);backdrop-filter:blur(6px);z-index:30}
.help[hidden]{display:none}
.help-card{
  position:relative;background:var(--glass);border:1px solid var(--hair);border-radius:3px;
  box-shadow:var(--shadow);padding:26px 30px;max-width:min(420px,88vw);
  animation:cardin .3s cubic-bezier(.2,.8,.25,1);
}
.help-card h3{font-family:var(--serif);font-weight:500;font-size:21px;margin-bottom:12px}
.help-card ul{list-style:none;display:grid;gap:8px;font-size:13px;color:var(--ink-2)}
.help-card b{display:inline-block;min-width:58px;color:var(--ink);letter-spacing:.06em;text-transform:uppercase;font-size:11px}

/* ————— loader ————— */
#loader{
  position:absolute;inset:0;background:var(--paper);z-index:40;
  display:grid;place-items:center;transition:opacity .7s ease .1s;
}
#loader.done{opacity:0;pointer-events:none}
.loader-inner{display:flex;align-items:center;gap:14px;color:var(--ink-3);font-size:11px;letter-spacing:.22em;text-transform:uppercase}
.loader-mark{
  width:9px;height:9px;border-radius:50%;background:var(--copper);
  animation:pulse 1.1s ease-in-out infinite;
}
@keyframes pulse{50%{transform:scale(.4);opacity:.4}}
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.noscript{position:absolute;inset:0;display:grid;place-items:center;background:var(--paper);color:var(--ink-2)}

/* ————— small viewports ————— */
@media (max-width:640px){
  #masthead{top:14px;left:16px;max-width:60vw}
  #masthead h1{font-size:38px}
  #toolbar{gap:0;bottom:12px;max-width:calc(100vw - 20px)}
  .tool{padding:9px 10px}
  .tool span{display:none}
  .tool-slider{padding:0 8px}
  .tool-slider span{display:none}
  #explode{width:84px}
  .card{top:auto;bottom:76px;right:12px;left:12px;width:auto;padding:16px 18px 14px}
  .hint{display:none}
  .marker{padding:8px}
  .marker .dot{width:30px;height:30px;font-size:11px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}