/* ================================================================
   TU Audio Playlist Player — Styles
   Scoped entirely to .tu-audio-player.
   No external dependencies. No global variable or class conflicts.
   ================================================================ */

.tu-audio-player {
  --player-gold-dark:   #D9A000;
  --player-black:       #1A1A1A;
  --player-gray-mid:    #828282;
  --player-focus-ring:  3px solid var(--gold-solid);
  --player-focus-offset: 2px;

  background: var(--player-black);
  border-radius: 4px;
  width: 100%;
  max-width: 560px;
  box-sizing: border-box;
  overflow: hidden;
  margin-top: 20px;
  margin-bottom: 20px;
}

/* ── Inheritance resets ──────────────────────────────────────────
   box-sizing/margin/padding zeros and list-style:none are omitted
   here — newsroom.css covers all three globally via its universal
   selector and :where() reset. The svg and i resets remain because
   newsroom.css excludes svg * from :where() and has its own
   .hamburger-nav i rules that could otherwise bleed into FA icons
   inside the player.
──────────────────────────────────────────────────────────────── */

.tu-audio-player svg {
  display: inline-block;
  overflow: visible;
  visibility: visible;
  opacity: 1;
  align-self: auto;
  justify-self: auto;
  padding: 0;
  max-width: none;
}

.tu-audio-player [class*="fa-"] {
  display: inline-block;
  font-style: normal;
  line-height: 1;
  visibility: visible;
  opacity: 1;
}

.tu-audio-player .player-icon [class*="fa-"] {
  font-size: 1.25rem;
  color: var(--player-black);
}

.tu-audio-player .btn-play [class*="fa-"] {
  font-size: 1rem;
  color: currentColor;
}

.tu-audio-player .volume-icon [class*="fa-"] {
  font-size: 0.875rem;
  color: var(--player-gray-mid);
}

/* ── Player top section ──────────────────────────────────────── */
.tu-audio-player .player-top {
  padding: 1.5rem;
}

.tu-audio-player .player-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.tu-audio-player .player-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--gold-solid);
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0;
}

.tu-audio-player .player-meta {
  flex: 1;
  min-width: 0;
}

.tu-audio-player .player-label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold-solid);
  margin-bottom: 0.25rem;
}

.tu-audio-player .player-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Controls ────────────────────────────────────────────────── */
.tu-audio-player .player-controls {
  display: flex;
  align-items: center;
  gap: 0.875rem;
}

.tu-audio-player .player-volume {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tu-audio-player .btn-play {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--gold-solid);
  background: transparent;
  color: var(--gold-solid);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease, color 0.15s ease;
}

.tu-audio-player .btn-play:hover {
  background: var(--gold-solid);
  color: var(--player-black);
}

.tu-audio-player .btn-play:focus-visible {
  outline: var(--player-focus-ring);
  outline-offset: var(--player-focus-offset);
}

.tu-audio-player .player-progress {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.tu-audio-player .scrubber-track {
  position: relative;
  height: 4px;
  background: var(--graphite);
  border-radius: 2px;
  cursor: pointer;
}

.tu-audio-player .scrubber-track:focus-visible {
  outline: var(--player-focus-ring);
  outline-offset: 4px;
  border-radius: 2px;
}

.tu-audio-player .scrubber-fill {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  background: var(--gold-solid);
  border-radius: 2px;
  pointer-events: none;
  width: 0%;
  transition: width 0.1s linear;
}

.tu-audio-player .scrubber-input {
  position: absolute;
  inset: -8px 0;
  width: 100%;
  height: calc(100% + 16px);
  opacity: 0;
  cursor: pointer;
  margin: 0;
}

.tu-audio-player .time-display {
  display: flex;
  justify-content: space-between;
  font-size: 0.6875rem;
  color: var(--player-gray-mid);
  font-variant-numeric: tabular-nums;
}

.tu-audio-player .volume-icon {
  color: var(--player-gray-mid);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  font-size: 0;
}

.tu-audio-player .volume-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 72px;
  height: 4px;
  background: var(--graphite);
  border-radius: 2px;
  cursor: pointer;
  outline: none;
}

.tu-audio-player .volume-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--gold-solid);
  cursor: pointer;
  border: none;
}

.tu-audio-player .volume-slider::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--gold-solid);
  cursor: pointer;
  border: none;
}

.tu-audio-player .volume-slider:focus-visible {
  outline: var(--player-focus-ring);
  outline-offset: var(--player-focus-offset);
  border-radius: 2px;
}

/* ── Transcript ──────────────────────────────────────────────── */
.tu-audio-player .transcript-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  background: transparent;
  border: none;
  border-top: 1px solid var(--graphite);
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  text-align: left;
  color: var(--player-gray-mid);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color 0.15s ease;
}

.tu-audio-player .transcript-toggle:hover {
  color: var(--white);
}

.tu-audio-player .transcript-toggle:focus-visible {
  outline: var(--player-focus-ring);
  outline-offset: -3px;
}

.tu-audio-player .transcript-toggle [class*="fa-"] {
  display: inline-block;
  font-size: 0.875rem;
  flex-shrink: 0;
  transform-origin: center;
  transition: transform 0.2s ease;
}

.tu-audio-player .transcript-toggle[aria-expanded="true"] [class*="fa-"] {
  transform: rotate(180deg);
}

.tu-audio-player .transcript-toggle[aria-expanded="true"] {
  color: var(--gold-solid);
}

.tu-audio-player .transcript-panel {
  display: none;
  padding: 1rem 1.5rem 1.25rem;
  border-top: 1px solid var(--graphite);
  max-height: 160px;
  overflow-y: auto;
  scroll-behavior: smooth;
}

.tu-audio-player .transcript-panel:focus-visible {
  outline: var(--player-focus-ring);
  outline-offset: -3px;
}

.tu-audio-player .transcript-panel.is-open {
  display: block;
}

.tu-audio-player .transcript-text {
  color: var(--player-gray-mid);
}

.tu-audio-player .transcript-text p {
  font-size: 1rem;
  line-height: 1.25;
  margin: 0;
}

.tu-audio-player .transcript-text p + p {
  margin-top: 0.75rem;
}

/* ── Playlist ────────────────────────────────────────────────── */
.tu-audio-player .player-playlist {
  border-top: 1px solid var(--graphite);
  margin: 10px 0;
}

.tu-audio-player .tu-playlist-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--graphite);
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  text-align: left;
  transition: background 0.15s ease;
}

.tu-audio-player .tu-playlist-item:last-child {
  border-bottom: none;
}

.tu-audio-player .tu-playlist-item:hover {
  background: var(--graphite);
}

.tu-audio-player .tu-playlist-item:focus-visible {
  outline: var(--player-focus-ring);
  outline-offset: -3px;
}

.tu-audio-player .tu-playlist-item[aria-current="true"] {
  background: var(--graphite);
}

.tu-audio-player .track-number {
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--player-gray-mid);
  min-width: 1.25rem;
  text-align: right;
  font-variant-numeric: tabular-nums;
  flex-shrink: 0;
}

.tu-audio-player .tu-playlist-item[aria-current="true"] .track-number {
  color: var(--gold-solid);
}

.tu-audio-player .track-playing-indicator {
  display: none;
  width: 1.25rem;
  flex-shrink: 0;
  align-items: center;
  justify-content: flex-end;
  gap: 2px;
}

.tu-audio-player .tu-playlist-item[aria-current="true"] .track-playing-indicator {
  display: flex;
}

.tu-audio-player .tu-playlist-item[aria-current="true"] .track-number-text {
  display: none;
}

.tu-audio-player .track-playing-indicator span {
  display: block;
  width: 3px;
  background: var(--gold-solid);
  border-radius: 1px;
  animation: tu-bar-bounce 0.8s ease-in-out infinite alternate;
}

.tu-audio-player .track-playing-indicator span:nth-child(1) { height: 8px;  animation-delay: 0s; }
.tu-audio-player .track-playing-indicator span:nth-child(2) { height: 12px; animation-delay: 0.2s; }
.tu-audio-player .track-playing-indicator span:nth-child(3) { height: 6px;  animation-delay: 0.4s; }

@keyframes tu-bar-bounce {
  from { transform: scaleY(0.4); }
  to   { transform: scaleY(1); }
}

.tu-audio-player.is-paused .track-playing-indicator span {
  animation-play-state: paused;
}

.tu-audio-player .track-info {
  flex: 1;
  min-width: 0;
}

.tu-audio-player .track-name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--white);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tu-audio-player .tu-playlist-item[aria-current="true"] .track-name {
  color: var(--gold-solid);
}

.tu-audio-player .track-duration {
  font-size: 0.6875rem;
  color: var(--player-gray-mid);
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

/* ── Mode modifiers ──────────────────────────────────────────────
   .single hides the playlist only. Transcript remains visible in
   both modes — required for WCAG 2.1 AA compliance.
──────────────────────────────────────────────────────────────── */
.tu-audio-player.single .player-playlist {
  display: none;
}

/* ── Screen reader utility ───────────────────────────────────── */
.tu-audio-player .tu-player-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}