*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: system-ui, -apple-system, sans-serif;
  background: #0a0a0a;
  color: #fafafa;
  overflow: hidden;
}

canvas {
  display: block;
  cursor: crosshair;
}

#ui {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  pointer-events: none;
  white-space: nowrap;
}