.audio-panel {
  position: fixed;
  top: 1rem;
  right: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.7rem;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 100;
  transition: opacity 0.3s;
}

.audio-panel:hover {
  border-color: rgba(0, 255, 242, 0.3);
}

.audio-panel button {
  padding: 0.3rem 0.5rem;
  font-size: 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  min-width: 2rem;
  text-align: center;
  line-height: 1;
}

.audio-panel button.active {
  border-color: var(--accent-cyan);
  background: rgba(0, 255, 242, 0.2);
}

.audio-panel select {
  background: rgba(0, 0, 0, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-primary);
  padding: 0.3rem 0.4rem;
  font-family: 'Rajdhani', sans-serif;
  font-size: 0.75rem;
  border-radius: 8px;
  cursor: pointer;
  outline: none;
  max-width: 140px;
}

.audio-panel select:hover,
.audio-panel select:focus {
  border-color: var(--accent-cyan);
}

.audio-panel select option,
.audio-panel select optgroup {
  background: #0a0a0f;
  color: var(--text-primary);
}

.audio-panel select optgroup {
  font-weight: 700;
  font-size: 0.7rem;
  color: var(--accent-cyan);
}

.volume-slider {
  display: flex;
  align-items: center;
}

.volume-slider input[type="range"] {
  width: 60px;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 2px;
  outline: none;
}

.volume-slider input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 10px;
  height: 10px;
  background: var(--accent-cyan);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 0 8px var(--accent-cyan);
}

.volume-slider input[type="range"]::-moz-range-thumb {
  width: 10px;
  height: 10px;
  background: var(--accent-cyan);
  border-radius: 50%;
  cursor: pointer;
  border: none;
  box-shadow: 0 0 8px var(--accent-cyan);
}