body {
  background: #000;
  font-family: Arial, sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
  color: #0f0;
}

h1 {
  color: #0ff;
  text-shadow: 0 0 20px #0ff;
  margin-bottom: 10px;
}

#score {
  color: #0ff;
  font-size: 20px;
  margin-bottom: 10px;
  text-shadow: 0 0 8px #0ff;
}

canvas {
  background: #000;
  border: 2px solid #0ff;
  border-radius: 10px;
  box-shadow: 0 0 25px #0ff;
}

.controls {
  margin-top: 15px;
}

button {
  background: #000;
  border: 2px solid #0ff;
  color: #0ff;
  padding: 10px 20px;
  margin: 5px;
  font-size: 16px;
  border-radius: 8px;
  cursor: pointer;
  box-shadow: 0 0 10px #0ff;
  transition: 0.2s;
}

button:hover {
  background: #0ff;
  color: #000;
  box-shadow: 0 0 20px #0ff;
}

.game-over {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: rgba(0,0,0,0.9);
  padding: 30px;
  border: 2px solid #0ff;
  border-radius: 10px;
  text-align: center;
  color: #0ff;
  font-size: 22px;
  display: none;
  box-shadow: 0 0 30px #0ff;
}

footer {
  margin-top: 15px;
  text-align: center;
  font-size: 13px;
  color: #0ff;
  text-shadow: 0 0 6px #0ff;
}