body {
  margin: 0;
  background: url("v_bgr.png") no-repeat center center fixed;
  background-size: cover;
  font-family: sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

#score {
  margin-top: 10px;
  font-size: 24px;
  color: #333;
  background: rgba(255,255,255,0.8);
  padding: 10px 20px;
  border-radius: 8px;
}

canvas {
  background-color: rgba(255, 255, 255, 0.7);
  border: 2px solid #444;
  box-shadow: 0 0 20px rgba(0,0,0,0.5);
  margin: 10px 0;
}

#controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-bottom: 20px;
}

.btn {
  font-size: 20px;
  padding: 12px 18px;
  border: none;
  border-radius: 6px;
  background: rgba(255,255,255,0.9);
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
  cursor: pointer;
  min-width: 60px;
}