body {
  margin: 0;
  background: #000;
  font-family: sans-serif;
}
canvas {
  display: block;
}
#game-controls {
  margin-top: 16px;
  text-align: center;
}

#game-controls button {
  padding: 10px 24px;
  font-size: 16px;
  background-color: #007AFF;
  color: #fff;
  border: none;
  border-radius: 8px;
  margin: 0 8px;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

#game-controls button:hover {
  background-color: #005fd1;
}

canvas, 
#score,
#game-controls, 
#game-controls * {
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  user-select: none;
}