* { box-sizing: border-box; }

:root{
  --bg:#05070a;
  --fg:#eef6ff;
  --muted:rgba(238,246,255,.56);
  --line:rgba(238,246,255,.12);
  --glass:rgba(5,7,10,.54);
}

html,body{
  width:100%;
  height:100%;
  margin:0;
  overflow:hidden;
  background:var(--bg);
  color:var(--fg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button{ font:inherit; }

#world{
  position:fixed;
  inset:0;
  width:100%;
  height:100%;
  display:block;
  background:
    radial-gradient(circle at 50% 45%, rgba(21,32,44,.55), transparent 45%),
    #05070a;
}

#audioWaveform{
  position:fixed;
  z-index:7;
  left:0;
  right:0;
  bottom:0;
  width:100%;
  height:150px;
  pointer-events:none;
}

#camera, #camera-sampler{
  position:fixed;
  width:1px;
  height:1px;
  opacity:0;
  pointer-events:none;
}

.grain{
  position:fixed;
  inset:-15%;
  pointer-events:none;
  opacity:.04;
  mix-blend-mode:screen;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.85'/%3E%3C/svg%3E");
  animation:grain .32s steps(2) infinite;
  will-change:transform;
}
html[data-quality="low"] .grain{ display:none; }
html[data-quality="medium"] .grain{ animation:none; will-change:auto; }
@keyframes grain{
  0%{transform:translate3d(0,0,0)}
  25%{transform:translate3d(3%,-2%,0)}
  50%{transform:translate3d(-2%,3%,0)}
  75%{transform:translate3d(2%,2%,0)}
}

.topbar{
  position:fixed;
  z-index:8;
  left:0; right:0; top:0;
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:22px 26px;
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  pointer-events:none;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-weight:700;
}
.brand-dot{
  width:7px;height:7px;border-radius:50%;
  background:#dff8ff;
  box-shadow:0 0 18px rgba(223,248,255,.95);
}
.status-line{ color:var(--muted); }
.sep{ padding:0 8px; opacity:.35; }

.hint-stack{
  position:fixed;
  z-index:8;
  right:24px;
  bottom:22px;
  display:grid;
  gap:7px;
  font-size:10px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:rgba(238,246,255,.52);
  pointer-events:none;
  transition:opacity .3s ease;
}
.hint-stack kbd{
  display:inline-grid;
  min-width:26px;
  height:22px;
  place-items:center;
  border:1px solid rgba(255,255,255,.18);
  border-radius:4px;
  color:rgba(255,255,255,.9);
  margin-right:8px;
  background:rgba(255,255,255,.04);
}

.control-dock{
  position:fixed;
  z-index:15;
  left:50%;
  bottom:20px;
  transform:translateX(-50%);
  display:flex;
  align-items:center;
  gap:6px;
  padding:6px;
  border:1px solid rgba(255,255,255,.12);
  border-radius:999px;
  background:rgba(3,6,9,.72);
  box-shadow:0 18px 60px rgba(0,0,0,.34);
  backdrop-filter:blur(18px) saturate(.8);
  transition:opacity .25s ease, transform .25s ease, visibility .25s;
}
.control-dock.hidden{
  opacity:0;
  visibility:hidden;
  transform:translate(-50%,8px);
  pointer-events:none;
}
.control-button{
  display:flex;
  align-items:center;
  gap:7px;
  min-height:36px;
  padding:0 12px;
  border:1px solid transparent;
  border-radius:999px;
  color:rgba(238,246,255,.58);
  background:transparent;
  font-size:9px;
  font-weight:800;
  letter-spacing:.1em;
  white-space:nowrap;
  transition:color .18s ease, background .18s ease, border-color .18s ease, opacity .18s ease;
}
.control-button kbd{
  font:700 9px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color:rgba(238,246,255,.44);
}
.control-button:hover:not(:disabled){
  color:rgba(238,246,255,.92);
  background:rgba(255,255,255,.06);
}
.control-button[aria-pressed="true"]{
  color:#effaff;
  border-color:rgba(178,232,255,.18);
  background:rgba(123,211,255,.12);
}
.control-button:disabled{
  cursor:not-allowed;
  opacity:.28;
}
.pause-control{
  color:rgba(255,233,205,.82);
}
.mic-control{
  --mic-level:0;
  position:relative;
  overflow:hidden;
  isolation:isolate;
}
.mic-control::before{
  content:"";
  position:absolute;
  z-index:-1;
  inset:2px;
  border-radius:999px;
  background:linear-gradient(90deg,rgba(92,205,255,.16),rgba(220,248,255,.42));
  transform:scaleX(var(--mic-level));
  transform-origin:left center;
  transition:transform 55ms linear;
}
.system-paused .mic-control::before{
  transition:none;
}
.sensitivity-control{
  display:flex;
  align-items:center;
  gap:7px;
  min-height:36px;
  padding:0 11px;
  border-left:1px solid rgba(255,255,255,.09);
  color:rgba(238,246,255,.48);
  font-size:8px;
  font-weight:800;
  letter-spacing:.1em;
  white-space:nowrap;
  transition:opacity .18s ease;
}
.sensitivity-control:has(input:disabled){
  opacity:.28;
}
.sensitivity-control input{
  width:72px;
  margin:0;
  accent-color:#b7eaff;
  cursor:pointer;
}
.sensitivity-control input:disabled{
  cursor:not-allowed;
}
.sensitivity-control output{
  min-width:27px;
  color:rgba(238,246,255,.78);
  font:700 8px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  text-align:right;
}
.sound-control{
  position:relative;
}
.sound-control::after{
  content:"";
  position:absolute;
  right:6px;
  top:6px;
  width:4px;
  height:4px;
  border-radius:50%;
  background:#e7faff;
  opacity:0;
  transform:scale(.7);
  box-shadow:0 0 10px rgba(183,234,255,.9);
  transition:opacity .14s ease, transform .14s ease;
}
.sound-control.sound-hit::after{
  opacity:1;
  transform:scale(1.8);
}

.pause-overlay{
  position:fixed;
  z-index:18;
  inset:0;
  display:grid;
  place-items:center;
  background:rgba(3,5,8,.38);
  backdrop-filter:blur(12px) saturate(.55);
  transition:opacity .28s ease, visibility .28s ease;
}
.pause-overlay.hidden{
  opacity:0;
  visibility:hidden;
  pointer-events:none;
}
.pause-card{
  width:min(520px,calc(100vw - 40px));
  padding:34px;
  border:1px solid rgba(255,255,255,.13);
  border-radius:20px;
  background:rgba(5,8,12,.88);
  box-shadow:0 24px 90px rgba(0,0,0,.42);
  text-align:center;
}
.pause-card h2{
  margin:12px 0 10px;
  font-size:clamp(34px,7vw,68px);
  line-height:.92;
  letter-spacing:-.055em;
}
.pause-card p{
  margin:0 auto 24px;
  max-width:430px;
  color:rgba(238,246,255,.58);
  line-height:1.5;
}
.system-paused .grain,
.system-paused .scene-flash{
  animation-play-state:paused;
}
.system-paused .pause-overlay,
.system-paused .control-dock{
  backdrop-filter:none;
}

.activation-overlay{
  position:fixed;
  z-index:17;
  inset:0;
  display:grid;
  place-items:center;
  pointer-events:auto;
  background:rgba(5,7,10,.32);
  transition:opacity .65s ease, visibility .65s ease, background 1.2s ease;
}
.activation-overlay.hidden,
.activation-overlay.out{
  opacity:0;
  visibility:hidden;
  pointer-events:none;
}
.activation-card{
  width:min(560px,calc(100vw - 44px));
  padding:34px;
  text-align:center;
}
.activation-card h2{
  margin:13px 0 12px;
  font-size:clamp(42px,8vw,86px);
  line-height:.88;
  letter-spacing:-.06em;
}
.activation-card p{
  margin:0 auto;
  max-width:450px;
  color:rgba(238,246,255,.58);
  line-height:1.5;
}
.activation-button{
  margin-top:25px;
}
.system-awaiting .topbar,
.system-awaiting .hint-stack,
.system-awaiting .control-dock,
.system-awaiting .permission-state{
  opacity:0;
  pointer-events:none;
}
.topbar,
.hint-stack,
.permission-state{
  transition:opacity 2.4s ease;
}
.control-dock{
  transition:opacity 2.4s ease, transform .25s ease, visibility .25s;
}

.safety-warning{
  position:fixed;
  z-index:30;
  inset:0;
  display:grid;
  place-items:center;
  padding:24px;
  background:#05070a;
}
.safety-warning.hidden{
  display:none;
}
.safety-card{
  width:min(680px,100%);
  padding:clamp(28px,5vw,56px);
  border:1px solid rgba(255,196,133,.24);
  border-radius:22px;
  background:#090b0e;
  box-shadow:0 28px 100px rgba(0,0,0,.58);
  text-align:center;
}
.warning-mark{
  display:grid;
  place-items:center;
  width:48px;
  height:48px;
  margin:0 auto 24px;
  border:1px solid rgba(255,197,137,.62);
  border-radius:50%;
  color:#ffd3a3;
  font:700 24px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.safety-card .eyebrow{
  color:rgba(255,211,163,.72);
}
.safety-card h1{
  margin:14px 0 20px;
  font-size:clamp(42px,8vw,84px);
  line-height:.9;
  letter-spacing:-.055em;
}
.safety-card p{
  max-width:580px;
  margin:0 auto;
  color:rgba(238,246,255,.7);
  font-size:clamp(15px,2vw,18px);
  line-height:1.6;
}
.warning-action{
  margin-top:30px;
}
.safety-gate .grain{
  opacity:0;
  animation-play-state:paused;
}

.intro{
  position:fixed;
  z-index:20;
  inset:0;
  display:grid;
  place-items:center;
  background:
    radial-gradient(circle at 50% 48%, rgba(14,28,38,.58), rgba(5,7,10,.9) 55%, rgba(5,7,10,.98));
  backdrop-filter:blur(14px);
  transition:opacity .8s ease, visibility .8s ease;
}
.intro.out{
  opacity:0;
  visibility:hidden;
}
.intro-inner{
  width:min(760px, calc(100vw - 48px));
}
.eyebrow{
  font-size:10px;
  letter-spacing:.22em;
  color:rgba(235,246,255,.55);
  font-weight:700;
}
.intro h1{
  margin:16px 0 24px;
  font-size:clamp(54px, 10vw, 118px);
  line-height:.82;
  letter-spacing:-.065em;
  font-weight:700;
}
.intro p{
  width:min(620px,100%);
  margin:0;
  font-size:clamp(16px,2vw,21px);
  line-height:1.55;
  color:rgba(238,246,255,.72);
}
.intro-actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:34px;
}
button{
  border:0;
  cursor:pointer;
}
.primary,.ghost{
  height:48px;
  padding:0 18px;
  border-radius:999px;
  font-size:11px;
  font-weight:800;
  letter-spacing:.12em;
}
.primary{
  background:#eef8ff;
  color:#071016;
}
.primary:hover{ transform:translateY(-1px); }
.ghost{
  color:rgba(238,246,255,.75);
  background:rgba(255,255,255,.055);
  border:1px solid rgba(255,255,255,.12);
}
.permission-note{
  margin-top:16px;
  font-size:11px;
  color:rgba(238,246,255,.35);
}

.permission-state{
  position:fixed;
  z-index:9;
  left:24px;
  bottom:22px;
  font-size:10px;
  text-transform:uppercase;
  letter-spacing:.1em;
  color:rgba(238,246,255,.38);
  pointer-events:none;
}

.scene-flash{
  position:fixed;
  z-index:9;
  left:50%;
  top:50%;
  transform:translate(-50%,-50%);
  font-size:clamp(32px,6vw,70px);
  font-weight:700;
  letter-spacing:-.05em;
  opacity:0;
  pointer-events:none;
}
.scene-flash.show{
  animation:sceneFlash 1.05s ease both;
}
@keyframes sceneFlash{
  0%{opacity:0; transform:translate(-50%,-45%) scale(.96)}
  20%{opacity:1}
  70%{opacity:1}
  100%{opacity:0; transform:translate(-50%,-55%) scale(1.02)}
}

.debug{
  position:fixed;
  z-index:12;
  inset:72px 24px 24px 24px;
  padding:18px;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(3,5,8,.68);
  backdrop-filter:blur(20px) saturate(.8);
  transition:opacity .25s ease, transform .25s ease, visibility .25s;
  overflow:auto;
}
.debug.hidden{
  opacity:0;
  transform:translateY(8px);
  visibility:hidden;
  pointer-events:none;
}
.debug-head{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:18px;
  padding-bottom:16px;
  border-bottom:1px solid var(--line);
}
.debug h2{
  margin:8px 0 0;
  font-size:clamp(19px,2.6vw,34px);
  letter-spacing:-.035em;
}
.scene-label{
  padding-top:4px;
  font-size:10px;
  letter-spacing:.14em;
  color:var(--muted);
}
.debug-grid{
  display:grid;
  grid-template-columns:1.25fr .8fr .9fr .8fr;
  gap:1px;
  background:var(--line);
  margin-top:1px;
}
.panel{
  min-height:270px;
  background:rgba(4,7,10,.76);
  padding:16px;
}
.panel h3{
  margin:0 0 16px;
  font-size:10px;
  letter-spacing:.18em;
  color:rgba(255,255,255,.45);
}
.metric{
  display:grid;
  grid-template-columns:1fr auto;
  gap:20px;
  padding:6px 0;
  border-bottom:1px solid rgba(255,255,255,.055);
  font: 11px/1.2 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.metric span{ color:rgba(255,255,255,.42); }
.metric strong{ color:rgba(255,255,255,.92); font-weight:500; }

.code-flow{
  display:grid;
  gap:7px;
  align-content:start;
  font:11px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.code-flow span{
  padding:10px;
  border:1px solid rgba(255,255,255,.09);
  color:rgba(255,255,255,.74);
}
.code-flow b{
  font-weight:400;
  text-align:center;
  color:rgba(255,255,255,.25);
}
.output-panel{ display:flex; flex-direction:column; }
.output-node{
  padding:10px 0;
  font-size:11px;
  letter-spacing:.12em;
  border-bottom:1px solid rgba(255,255,255,.07);
  color:rgba(255,255,255,.72);
}
.pipeline{
  display:grid;
  grid-template-columns:repeat(11, auto);
  align-items:center;
  gap:10px;
  padding:18px 4px 2px;
}
.pipeline div{
  display:grid;
  gap:4px;
}
.pipeline b{
  font-size:10px;
  letter-spacing:.14em;
}
.pipeline span{
  font-size:9px;
  color:rgba(255,255,255,.35);
  white-space:nowrap;
}
.pipeline i{
  color:rgba(255,255,255,.24);
  font-style:normal;
}

@media(max-width:900px){
  .debug{ inset:64px 12px 12px; }
  .debug-grid{ grid-template-columns:1fr 1fr; }
  .pipeline{ grid-template-columns:1fr; }
  .pipeline i{ transform:rotate(90deg); text-align:center; }
  .pipeline span{ white-space:normal; }
  .hint-stack{display:none}
  .control-dock{
    left:12px;
    right:12px;
    bottom:12px;
    transform:none;
    justify-content:center;
    flex-wrap:wrap;
    border-radius:18px;
  }
  .control-dock.hidden{ transform:translateY(8px); }
  .control-button{ flex:1 1 auto; justify-content:center; }
  .sensitivity-control{ border-left:0; }
}

/* v2 — hand / performance debug accents */
.hand-metric span { color: rgba(180, 232, 255, .58); }
.hand-metric strong { color: rgba(224, 249, 255, .98); }

@media (prefers-reduced-motion: reduce) {
  .grain { animation: none; }
  .scene-flash.show { animation-duration: .35s; }
}