* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  overflow: hidden;
  background: #111;
  font-family: Arial, sans-serif;
  touch-action: none;
}

canvas {
  display: block;
  width: 100vw;
  height: 100vh;
  background: #111;
}

#ui {
  position: fixed;
  inset: 0;
  pointer-events: none;
  color: white;
  text-align: center;
}

#score {
  margin-top: 32px;
  font-size: 48px;
  font-weight: bold;
}

#message {
  position: fixed;
  top: 52%;
  width: 100%;
  font-size: 20px;
  font-weight: bold;
  opacity: 0.9;
}