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

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

#ui {
  margin-bottom: 20px;
  font-size: 18px;
  text-align: center;
  display: flex;
  gap: 20px;
  align-items: center;
}

#audioControls {
  display: flex;
  gap: 10px;
  align-items: center;
}

.audio-btn {
  background-color: #444;
  color: #fff;
  border: 2px solid #666;
  padding: 5px 15px;
  cursor: pointer;
  font-size: 14px;
  border-radius: 4px;
  transition: all 0.2s;
}

.audio-btn:hover {
  background-color: #555;
  border-color: #888;
}

.audio-btn.active {
  background-color: #4a4;
  border-color: #6c6;
}

#volumeSlider {
  width: 100px;
  cursor: pointer;
}

#gameCanvas {
  border: 2px solid #fff;
  background-color: #000;
  display: block;
}