:root {
  --panel: rgba(5, 12, 20, .58);
  --line: rgba(174, 226, 255, .22);
  --text: #e8f7ff;
  --muted: #9fb4c4;
  --cyan: #72e7ff;
  --amber: #ffd27a;
}
* { box-sizing: border-box; }
html, body { width: 100%; min-height: 100%; margin: 0; overflow: hidden; }
body {
  background: radial-gradient(circle at 50% 8%, #243349 0, #08111c 45%, #03060a 100%);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, Segoe UI, sans-serif;
}
canvas#scene { position: fixed; inset: 0; width: 100vw; height: 100vh; display: block; }
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 20%, transparent 0 18%, rgba(2,6,12,.3) 57%, rgba(0,0,0,.78) 100%),
    linear-gradient(180deg, rgba(142,190,255,.06), rgba(0,0,0,.35));
  mix-blend-mode: screen;
  z-index: 2;
}
.hud {
  position: fixed;
  left: clamp(10px, 2vw, 26px);
  top: clamp(10px, 2.4vw, 28px);
  z-index: 4;
  width: min(350px, calc(100vw - 20px));
  padding: clamp(11px, 1.8vw, 16px);
  border: 1px solid var(--line);
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(7,16,26,.72), rgba(7,16,26,.34));
  box-shadow: 0 22px 80px rgba(0,0,0,.42), inset 0 0 42px rgba(114,231,255,.06);
  backdrop-filter: blur(13px);
}
.eyebrow {
  margin: 0 0 8px;
  color: var(--cyan);
  font: 800 .62rem Orbitron, sans-serif;
  text-transform: uppercase;
  letter-spacing: .25em;
}
h1 {
  margin: 0;
  font: 900 clamp(1.35rem, 3.7vw, 2.6rem)/.9 Orbitron, sans-serif;
  letter-spacing: -.06em;
  text-transform: uppercase;
  text-shadow: 0 0 28px rgba(114,231,255,.28), 0 0 70px rgba(255,210,122,.13);
}
.copy {
  max-width: 310px;
  margin: 9px 0 0;
  color: #c6d7e2;
  font-size: clamp(.78rem, 1.25vw, .9rem);
  line-height: 1.35;
}
.readouts { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.readouts span {
  border: 1px solid rgba(114,231,255,.2);
  border-radius: 999px;
  padding: 5px 8px;
  background: rgba(255,255,255,.055);
  color: #dbeaf1;
  font-size: .7rem;
}
.readouts b { color: var(--amber); }
.controls {
  position: fixed;
  z-index: 4;
  right: clamp(10px, 2vw, 22px);
  bottom: calc(clamp(10px, 2vw, 20px) + env(safe-area-inset-bottom));
  display: flex;
  gap: 7px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
button {
  appearance: none;
  border: 1px solid rgba(174,226,255,.25);
  border-radius: 11px;
  padding: 8px 10px;
  color: var(--text);
  background: rgba(5,12,20,.58);
  box-shadow: 0 14px 36px rgba(0,0,0,.36), inset 0 0 24px rgba(114,231,255,.05);
  backdrop-filter: blur(10px);
  cursor: pointer;
  font-weight: 800;
  font-size: .76rem;
  touch-action: manipulation;
}
button:hover, button:focus-visible { border-color: var(--cyan); outline: none; transform: translateY(-1px); }
.move-help { flex-basis: 100%; max-width: 360px; margin: 0; padding: 7px 9px; border-radius: 10px; color: rgba(232,247,255,.72); background: rgba(5,12,20,.42); font-size: .68rem; line-height: 1.25; text-align: right; }
body.free-roam .hud { opacity: .46; transform: scale(.92); transform-origin: top left; }
body.free-roam .move-help { color: var(--amber); }
.loader {
  position: fixed; inset: 0; z-index: 10;
  display: grid; place-items: center;
  background: #050a10;
  transition: opacity .8s ease, visibility .8s ease;
}
.loader.hide { opacity: 0; visibility: hidden; }
.loader p { margin-top: 92px; color: var(--muted); font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.pulse {
  width: 72px; height: 72px; border-radius: 50%;
  border: 3px solid rgba(114,231,255,.18);
  border-top-color: var(--cyan);
  animation: spin 1s linear infinite;
  box-shadow: 0 0 50px rgba(114,231,255,.28);
}
@keyframes spin { to { transform: rotate(360deg); } }
.noscript { position: fixed; z-index: 20; inset: 0; display: grid; place-items: center; background: #050a10; color: white; padding: 24px; }
@media (max-width: 760px) {
  body { overflow: hidden; }
  .hud { top: 8px; left: 8px; width: min(310px, calc(100vw - 16px)); border-radius: 16px; padding: 11px; }
  .copy { display: none; }
  .readouts { margin-top: 8px; }
  .controls { left: 8px; right: 8px; justify-content: stretch; }
  button { flex: 1 1 22%; padding: 9px 7px; font-size: .7rem; }
  .move-help { text-align: center; font-size: .62rem; }
}