body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', Tahoma, sans-serif;
  background: #f5f5f5;
  color: #333;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  height: 100vh;
}

h1 {
  margin-top: 20px;
  color: #3f51b5;
}

canvas {
  border: 3px solid #3f51b5;
  background: #fff;
  margin-top: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.info {
  margin-top: 10px;
  font-size: 16px;
  display: flex;
  gap: 40px;
}

.controls {
  margin-top: 15px;
}

button {
  padding: 8px 16px;
  background: #3f51b5;
  border: none;
  color: white;
  font-size: 14px;
  border-radius: 4px;
  margin: 0 5px;
  cursor: pointer;
  transition: background 0.2s ease;
}

button:hover:not(:disabled) {
  background: #303f9f;
}

button:disabled {
  background: #bbb;
  cursor: not-allowed;
}

.game-over {
  display: none;
  margin-top: 20px;
  text-align: center;
  color: #d32f2f;
}