@charset "UTF-8";
.content {
  position: relative;
  text-align: center;
  color: #fff;
}

#sound-toggle {
  margin: 18px auto 28px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.35);
  background: rgba(0,0,0,0.25);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: opacity 0.6s ease, transform 0.4s ease;
}

#sound-toggle:hover {
  transform: scale(1.05);
}

#sound-toggle.hidden {
  opacity: 0;
  pointer-events: none;
}

#sound-icon {
  opacity: 0.85;
}