#music-toggle {
  position: fixed;
  top: 14px;
  right: 16px;
  width: 42px;
  height: 42px;
  background: #111;
  border: 2px solid #44d;
  border-radius: 8px;
  padding: 6px;
  cursor: pointer;
  box-shadow: 2px 2px 0 #000;
  z-index: 2000;
  transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.3s;
}

#music-toggle:hover {
  transform: translateY(-2px);
  box-shadow: 4px 4px 0 #000;
  filter: brightness(1.3);
}

#music-toggle.paused {
  border-color: #f44;
  filter: hue-rotate(-20deg) brightness(1.1);
}