/* Fixed control adds no layout space. Hidden state is neither clickable nor tabbable. */
.background-playback {
  position: fixed;
  left: max(16px, env(safe-area-inset-left));
  bottom: max(16px, env(safe-area-inset-bottom));
  z-index: 90;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid rgba(255,255,255,.65);
  border-radius: 50%;
  color: #fff;
  background: rgba(0,0,0,.58);
  font: inherit;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 180ms ease, visibility 0s 180ms;
}
.background-playback.is-available {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transition-delay: 0s;
}
.background-playback:hover { background: rgba(0,0,0,.82); }
.background-playback:focus-visible { outline: 2px solid #fff; outline-offset: 3px; box-shadow: 0 0 0 5px #111; }
.background-playback__icon { position: relative; width: 14px; height: 16px; }
.background-playback[data-state="playing"] .background-playback__icon::before,
.background-playback[data-state="playing"] .background-playback__icon::after {
  content: ""; position: absolute; top: 1px; width: 4px; height: 14px; background: currentColor;
}
.background-playback[data-state="playing"] .background-playback__icon::before { left: 1px; }
.background-playback[data-state="playing"] .background-playback__icon::after { right: 1px; }
.background-playback[data-state="paused"] .background-playback__icon::before {
  content: ""; position: absolute; left: 3px; top: 1px; width: 0; height: 0;
  border-top: 7px solid transparent; border-bottom: 7px solid transparent; border-left: 11px solid currentColor;
}
.background-playback__label {
  position: absolute; left: 52px; bottom: 0; width: max-content; max-width: calc(100vw - 90px);
  padding: 10px 12px; border-radius: 4px; background: rgba(0,0,0,.85);
  color: #fff; font-size: 13px; line-height: 1.4; text-align: left;
  opacity: 0; visibility: hidden; pointer-events: none;
}
.background-playback:hover .background-playback__label,
.background-playback:focus-visible .background-playback__label { opacity: 1; visibility: visible; }
@media (prefers-reduced-motion: reduce) { .background-playback { transition: none; } }