#music-player {
  position: fixed;
  bottom: 40px;
  right: 24px;
  z-index: 100;
}

#music-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease, border-color 0.2s ease;
  backdrop-filter: blur(6px);
}

#music-btn:hover {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.35);
}

#music-btn svg {
  width: 18px;
  height: 18px;
  fill: rgba(255, 255, 255, 0.7);
}

/* Rotation quand la musique joue */
#music-btn.playing svg {
  animation: spin 4s linear infinite;
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}