html, body {
  margin: 0;
  padding: 0;
  background: #0b0b0d;
  overflow: hidden;
  touch-action: none;
}

canvas {
  display: block;
}

.controls {
  position: fixed;
  top: max(16px, env(safe-area-inset-top));
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 12px;
  pointer-events: none;
}

.controls button {
  pointer-events: auto;
  font: 600 16px/1 system-ui, sans-serif;
  padding: 12px 20px;
  border: 0;
  border-radius: 999px;
  background: #ff3b30;
  color: #fff;
  cursor: pointer;
}

.controls button.secondary {
  background: #2a2a30;
}