:root {
  color-scheme: dark;
  font-family: Inter, ui-rounded, "SF Pro Rounded", system-ui, sans-serif;
  color: #f6f3ff;
  background: #03040a;
}

* { box-sizing: border-box; }

html, body, .stage-shell {
  width: 100%;
  height: 100%;
  margin: 0;
  overflow: hidden;
}

body {
  background: radial-gradient(circle at 50% 20%, #171b30 0%, #080a13 45%, #020308 100%);
}

#scene {
  display: block;
  width: 100%;
  height: 100%;
  touch-action: none;
}

.xr-button {
  position: fixed;
  top: max(1rem, env(safe-area-inset-top));
  right: max(1rem, env(safe-area-inset-right));
  z-index: 20;
  min-width: 4.25rem;
  padding: 0.7rem 1rem;
  border: 1px solid rgb(255 255 255 / 42%);
  border-radius: 999px;
  color: #fff;
  background: rgb(10 12 24 / 82%);
  box-shadow: 0 0.65rem 2rem rgb(0 0 0 / 45%);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font: 800 0.9rem/1 system-ui, sans-serif;
  letter-spacing: 0.06em;
  cursor: pointer;
}

.xr-button:hover:not(:disabled) {
  background: rgb(27 35 65 / 92%);
}

.xr-button:disabled {
  cursor: wait;
  opacity: 0.55;
}