body {
  margin: 0;
  height: 100vh;
  background: radial-gradient(circle at top, #0f2027, #203a43, #2c5364);
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  font-family: 'Poppins', sans-serif;
  color: #fff;
}

.game-container {
  position: relative;
  box-shadow: 0 0 30px #00e6ff, 0 0 60px #007bff;
  border-radius: 10px;
  overflow: hidden;
}

canvas {
  background: linear-gradient(to bottom, #050505, #111);
  display: block;
  border-radius: 10px;
}

.ui {
  position: absolute;
  top: 10px;
  left: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

button {
  background: #00e6ff;
  border: none;
  border-radius: 5px;
  color: #111;
  padding: 8px 14px;
  font-size: 16px;
  cursor: pointer;
  box-shadow: 0 0 10px #00e6ff;
  transition: all 0.2s;
}

button:hover {
  background: #007bff;
  box-shadow: 0 0 20px #007bff;
  color: #fff;
}

.score {
  font-size: 18px;
  text-shadow: 0 0 10px #00e6ff;
  margin-left: 10px;
}