.audio-toggle-shell {
  position: fixed;
  right: 1.2rem;
  bottom: 1.2rem;
  z-index: 10010;
  pointer-events: none;
}

.audio-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.68rem;
  min-height: 46px;
  padding: 0.7rem 0.95rem;
  border: 1px solid rgba(95, 76, 60, 0.16);
  border-radius: 999px;
  background: rgba(255, 250, 244, 0.82);
  color: #2f2a26;
  box-shadow: 0 0.9rem 2rem rgba(58, 44, 33, 0.08);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  cursor: pointer;
  pointer-events: auto;
  transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.audio-toggle:hover {
  transform: translateY(-1px);
  border-color: rgba(159, 79, 62, 0.26);
  box-shadow: 0 1rem 2.3rem rgba(58, 44, 33, 0.11);
}

.audio-toggle:focus-visible {
  outline: 2px solid rgba(159, 79, 62, 0.7);
  outline-offset: 3px;
}

.audio-toggle[disabled] {
  cursor: not-allowed;
  opacity: 0.68;
  transform: none;
}

.audio-toggle__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.55rem;
  height: 1.55rem;
  font-size: 0.98rem;
  line-height: 1;
  flex: 0 0 auto;
}

.audio-toggle__label {
  font-family: var(--ui-font, sans-serif);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.audio-toggle__bars {
  display: inline-flex;
  align-items: end;
  gap: 0.14rem;
  width: 0.8rem;
  height: 0.8rem;
  opacity: 0;
  transform: translateY(1px);
  transition: opacity 0.2s ease;
}

.audio-toggle__bars span {
  width: 0.12rem;
  height: 0.28rem;
  border-radius: 999px;
  background: currentColor;
}

.audio-toggle.is-playing {
  background: rgba(255, 247, 239, 0.92);
  border-color: rgba(159, 79, 62, 0.28);
}

.audio-toggle.is-playing .audio-toggle__bars {
  opacity: 0.85;
}

.audio-toggle.is-playing .audio-toggle__bars span:nth-child(1) {
  animation: audioBars 1.2s ease-in-out infinite;
}

.audio-toggle.is-playing .audio-toggle__bars span:nth-child(2) {
  animation: audioBars 1.2s ease-in-out infinite 0.16s;
}

.audio-toggle.is-playing .audio-toggle__bars span:nth-child(3) {
  animation: audioBars 1.2s ease-in-out infinite 0.32s;
}

.audio-toggle.is-off .audio-toggle__bars,
.audio-toggle.is-idle .audio-toggle__bars,
.audio-toggle.is-unavailable .audio-toggle__bars {
  opacity: 0;
}

@keyframes audioBars {
  0%, 100% { height: 0.24rem; opacity: 0.55; }
  50% { height: 0.78rem; opacity: 0.95; }
}

@media screen and (max-width: 840px) {
  .audio-toggle-shell {
    right: 0.9rem;
    bottom: 0.9rem;
  }

  .audio-toggle {
    min-height: 44px;
    padding: 0.68rem 0.82rem;
    gap: 0.55rem;
  }

  .audio-toggle__label {
    font-size: 0.84rem;
    letter-spacing: 0.03em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .audio-toggle,
  .audio-toggle__bars {
    transition: none;
  }

  .audio-toggle:hover {
    transform: none;
  }

  .audio-toggle.is-playing .audio-toggle__bars span {
    animation: none;
    height: 0.55rem;
    opacity: 0.8;
  }
}