* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background-color: #222;
  font-family: Arial, sans-serif;
}

.game-container {
  text-align: center;
}

canvas {
  border: 2px solid #444;
  background-color: #111;
}

.game-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 10px 0;
  gap: 20px;
}

.score, .speed-level {
  color: white;
  font-size: 18px;
  flex: 1;
  text-align: center;
}

.speed-level {
  font-weight: bold;
}

button {
  padding: 10px 20px;
  background-color: #4CAF50;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  font-size: 16px;
}

button:hover {
  background-color: #45a049;
}

.controls {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
  margin: 20px 0;
}

.speed-controls {
  display: flex;
  gap: 10px;
  justify-content: center;
}

.speed-btn {
  padding: 8px 15px;
  background-color: #666;
  border: 2px solid #777;
  font-size: 14px;
  min-width: 100px;
}

.speed-btn:hover {
  background-color: #777;
}

.speed-btn.active {
  background-color: #4CAF50;
  border-color: #45a049;
}

.speed-btn.active:hover {
  background-color: #45a049;
}

.control-pad {
  display: flex;
  flex-wrap: wrap;
  width: 120px;
  margin: 20px auto;
  gap: 10px;
}

.control-btn {
  width: 40px;
  height: 40px;
  font-size: 20px;
  border-radius: 8px;
  border: 2px solid #444;
  background-color: #333;
  color: white;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
}

.control-btn:hover {
  background-color: #555;
}

.control-btn:active {
  background-color: #777;
  transform: scale(0.95);
}