body {
  margin: 0;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: linear-gradient(135deg, #667eea, #764ba2);
  font-family: Arial;
  color: white;
}

.game-container {
  text-align: center;
}

canvas {
  background: black;
  border-radius: 10px;
  box-shadow: 0 0 20px rgba(0,0,0,0.5);
}

.buttons {
  margin-top: 10px;
}

button {
  background: #00ff00;
  border: none;
  padding: 10px 20px;
  margin: 5px;
  font-size: 16px;
  font-weight: bold;
  border-radius: 5px;
  cursor: pointer;
  transition: 0.2s;
}

button:hover {
  background: #00cc00;
}