/* Full-text listening controls only; leave playback and other buttons unchanged. */
.textbook-reading-audio-area .textbook-unit-audio,
.exercise-top .audio-row button[onclick="toggleListenAll()"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 16px;
  background: #4338ca;
  color: #fff;
  -webkit-text-fill-color: #fff;
  font-weight: 700;
  line-height: 1.4;
  white-space: nowrap;
  opacity: 1;
  text-shadow: none;
}
.textbook-reading-audio-area .textbook-unit-audio[aria-pressed="true"],
.exercise-top .audio-row button[onclick="toggleListenAll()"][aria-pressed="true"] {
  background: #115e59;
  color: #fff;
  -webkit-text-fill-color: #fff;
}
.textbook-reading-audio-area .textbook-unit-audio:hover,
.exercise-top .audio-row button[onclick="toggleListenAll()"]:hover {
  background: #3730a3;
}
.textbook-reading-audio-area .textbook-unit-audio[aria-pressed="true"]:hover,
.exercise-top .audio-row button[onclick="toggleListenAll()"][aria-pressed="true"]:hover {
  background: #134e4a;
}
.textbook-reading-audio-area .textbook-unit-audio:focus-visible,
.exercise-top .audio-row button[onclick="toggleListenAll()"]:focus-visible {
  outline: 3px solid #1e3a8a;
  outline-offset: 3px;
}
.textbook-reading-audio-area .textbook-unit-audio span {
  color: inherit;
  -webkit-text-fill-color: inherit;
  line-height: 1;
}