body {
  margin: 0;
  overflow: hidden;
  background: radial-gradient(circle at center, #0f0f1f, #000);
  font-family: 'Poppins', sans-serif;
  color: white;
  text-align: center;
}

.game-header {
  position: absolute;
  top: 10px;
  width: 100%;
  text-align: center;
  z-index: 10;
}

.controls button {
  background: linear-gradient(45deg, #00f, #0ff);
  border: none;
  padding: 10px 20px;
  margin: 5px;
  border-radius: 8px;
  color: #fff;
  font-weight: bold;
  cursor: pointer;
  box-shadow: 0 0 10px #0ff;
  transition: all 0.3s;
}

.controls button:hover {
  box-shadow: 0 0 20px #00f, 0 0 40px #0ff;
  transform: scale(1.05);
}

canvas {
  display: block;
  margin: 0 auto;
  background: radial-gradient(circle at bottom, #222, #111);
  border: 3px solid #0ff;
  box-shadow: 0 0 30px #0ff;
  border-radius: 10px;
}