body {
  background-color: #0f0f0f;
  color: #00ffcc;
  font-family: 'Segoe UI', sans-serif;
  text-align: center;
  margin: 0;
  padding: 20px;
}

h1 {
  font-size: 36px;
  color: #00ffff;
  text-shadow: 0 0 10px #0ff, 0 0 20px #0ff;
}

canvas {
  background: #1a1a1a;
  border: 2px solid #00ffcc;
  border-radius: 10px;
  display: block;
  margin: 20px auto;
}

#start-screen {
  margin-top: 100px;
}

button {
  padding: 10px 20px;
  margin: 10px;
  font-size: 18px;
  border-radius: 8px;
  border: none;
  background-color: #00ffcc;
  color: black;
  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  background-color: #00cc99;
}

.controls {
  margin-top: 15px;
}