/* One mute control follows the reader through every scene. */
.top nav .water-sound {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: inherit;
  cursor: pointer;
}
.top nav .water-sound[hidden] { display: none; }
.top nav .water-sound:is(:hover, :focus-visible) {
  background: color-mix(in srgb, currentColor 10%, transparent);
}
@media (max-width: 440px) {
  .top nav .water-sound { width: 34px; }
}
@media (max-width: 365px) {
  .top { padding-inline: 8px; }
  .top nav { gap: 2px; font-size: .72rem; }
  .top nav .talk { padding-inline: 6px; }
  .top nav .calm-toggle-nav,
  html.calm .top nav .calm-toggle-nav { min-width: 32px; }
  .top nav .water-sound { width: 32px; }
}
.water-sound-icon { position: relative; display: block; width: 19px; height: 18px; }
.water-sound-icon::before {
  position: absolute;
  content: "";
  inset: 2px 8px 2px 0;
  background: currentColor;
  clip-path: polygon(0 32%, 40% 32%, 100% 0, 100% 100%, 40% 68%, 0 68%);
}
.water-sound-icon::after {
  position: absolute;
  content: "";
  inset: 3px 1px 3px 7px;
  border: 1.5px solid transparent;
  border-right-color: currentColor;
  border-radius: 50%;
}
.water-sound[aria-pressed="true"] .water-sound-icon::after {
  inset: 1px 8px;
  width: 1px;
  height: 16px;
  border: 0;
  border-radius: 0;
  background: currentColor;
  box-shadow: 2px 0 var(--ivoire);
  transform: rotate(-45deg);
}

.top:is([data-theme="deep"], [data-theme="salon"]) .water-sound[aria-pressed="true"] .water-sound-icon::after {
  box-shadow: 2px 0 #103640;
}