/*.music-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.6);
    color: #fff;
    font-size: 22px;
    border: none;
    cursor: pointer;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.music-btn:hover {
    transform: scale(1.1);
}

.music-btn.hidden {
    opacity: 0;
    pointer-events: none;
}

*/
.music-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    background: rgba(0,0,0,0.6);
    color: white;
    font-size: 20px;
    cursor: pointer;
  }
  
  .music-btn.hidden {
    display: none;
  }