html, body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: #000;
  font-family: Arial, Helvetica, sans-serif;
}

body {
  position: fixed;
  inset: 0;
}

a-scene {
  position: fixed !important;
  inset: 0 !important;
  width: 100vw !important;
  height: 100vh !important;
}

#brand {
  position: fixed;
  top: max(10px, env(safe-area-inset-top));
  left: 50%;
  transform: translateX(-50%);
  z-index: 10000;
  padding: 5px 11px;
  border-radius: 999px;
  background: rgba(2, 6, 23, 0.42);
  border: 1px solid rgba(56, 189, 248, 0.28);
  box-shadow: 0 0 14px rgba(56, 189, 248, 0.18);
  color: #e2e8f0;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  pointer-events: none;
}

#hint {
  position: fixed;
  left: 50%;
  bottom: max(14px, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  z-index: 9999;
  width: min(92vw, 760px);
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(8, 47, 73, 0.58);
  border: 1px solid rgba(125, 211, 252, 0.34);
  box-shadow: 0 0 22px rgba(56, 189, 248, 0.28);
  color: #e0f2fe;
  font-size: 12px;
  line-height: 1.35;
  text-align: center;
  pointer-events: none;
  transition: opacity .25s ease;
}

#hint.hide {
  opacity: 0;
}