/* Real course-media controls are exclusive to the standalone learning website. */
.web-app .web-course-player { width: 100%; min-width: 0; overflow: hidden; background: #fff; border: 1px solid #e3e9f4; border-radius: 22px; box-shadow: 0 8px 24px #22355808; outline-offset: 3px; }
.web-app .web-player-screen { position: relative; width: 100%; min-height: 180px; aspect-ratio: 16 / 9; background: #101a2d; overflow: hidden; isolation: isolate; }
.web-app .web-player-screen > video { display: block; position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; background: #101a2d; cursor: pointer; }
.web-app .web-player-demo-label { position: absolute; top: 14px; left: 14px; z-index: 1; padding: 5px 9px; border-radius: 7px; font-size: calc(12px * var(--font-scale)); line-height: 1.5; color: #fff; background: #172748c4; border: 1px solid #ffffff35; pointer-events: none; }
.web-app .web-player-center { position: absolute; inset: 50% auto auto 50%; transform: translate(-50%,-50%) !important; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; padding: 20px 28px; max-width: calc(100% - 32px); min-width: 120px; min-height: 100px; border-radius: 22px; border: 1px solid #ffffff66; background: #172744b3; color: #fff; backdrop-filter: blur(8px); font-size: calc(14px * var(--font-scale)); line-height: 1.5; text-align: center; }
.web-app .web-player-center .icon { width: 34px; height: 34px; }
.web-app .web-player-loading, .web-app .web-player-error { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px; padding: 24px; color: #fff; background: #101a2ddb; text-align: center; font-size: calc(14px * var(--font-scale)); line-height: 1.7; overflow-y: auto; z-index: 2; }
.web-app .web-player-spinner { width: 32px; height: 32px; flex-shrink: 0; border: 3px solid #ffffff30; border-top-color: #a6b6ff; border-radius: 50%; animation: web-player-spin 1s linear infinite; }
.web-app .web-player-error strong { font-size: calc(18px * var(--font-scale)); }
.web-app .web-player-error p { max-width: 560px; font-size: calc(14px * var(--font-scale)); line-height: 1.8; overflow-wrap: anywhere; }
.web-app .web-player-error button { min-height: 48px; min-width: 48px; padding: 10px 18px; border-radius: 12px; background: #fff; color: #31487b; font-size: calc(14px * var(--font-scale)); line-height: 1.6; }
.web-app .web-player-controls { padding: 12px 18px 16px; min-width: 0; color: #52617d; background: #fff; }
.web-app .web-player-seek-row { display: grid; grid-template-columns: auto minmax(48px,1fr) auto; align-items: center; gap: 12px; min-height: 48px; font-size: calc(13px * var(--font-scale)); font-variant-numeric: tabular-nums; }
.web-app .web-course-player input[type="range"] { display: block; width: 100%; min-width: 0; min-height: 48px; height: 48px; margin: 0; padding: 0; accent-color: #6465ed; border: 0; border-radius: 0; background: transparent; cursor: pointer; }
.web-app .web-course-player input[type="range"]:disabled { cursor: default; opacity: .5; }
.web-app .web-player-control-row { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; }
.web-app .web-player-controls button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-width: 48px; min-height: 48px; padding: 8px 12px; border-radius: 10px; color: #52617d; font-size: calc(13px * var(--font-scale)); line-height: 1.5; }
.web-app .web-player-controls button:hover:not(:disabled) { background: #f0f3ff; }
.web-app .web-player-controls button:disabled { opacity: .45; }
.web-app .web-player-transport { display: flex; align-items: center; gap: 6px; }
.web-app .web-player-transport > .web-player-play { background: #eff1ff; color: #5d60df; }
.web-app .web-player-transport > button:not(.web-player-play) { font-variant-numeric: tabular-nums; font-weight: 650; }
.web-app .web-player-play [data-web-player-toggle-icon] { display: inline-flex; }
.web-app .web-player-speed { display: flex; gap: 8px; align-items: center; min-width: 0; font-size: calc(13px * var(--font-scale)); }
.web-app .web-player-speed select { min-width: 72px; min-height: 48px; padding: 8px; border-radius: 10px; border: 1px solid #e2e8f5; background: #f7f9ff; color: #415678; font-size: calc(14px * var(--font-scale)); line-height: 1.5; }
.web-app .web-player-volume { display: flex; align-items: center; gap: 8px; min-width: 0; color: #8a94a7; font-size: calc(12px * var(--font-scale)); }
.web-app .web-player-volume > span { white-space: nowrap; }
.web-app .web-player-volume > input { max-width: 70px; }
.web-app .web-player-controls .web-player-fullscreen { margin-left: auto; }
.web-app .web-player-fullscreen .icon { width: 20px; height: 20px; }
.web-app .web-player-status-row { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 6px 14px; margin: 10px 0 7px; font-size: calc(12px * var(--font-scale)); line-height: 1.7; }
.web-app .web-player-status-row > [data-web-player-status] { color: #667bb5; }
.web-app .web-player-shortcuts { color: #98a2b5; font-size: calc(11px * var(--font-scale)); }
.web-app .web-player-disclosure { padding-top: 10px; margin-top: 10px; border-top: 1px solid #edf0f6; color: #7d8ca5; font-size: calc(12px * var(--font-scale)); line-height: 1.8; overflow-wrap: anywhere; }
.web-app .web-player-save-warning { margin-top: 12px; padding: 10px 12px; color: #93620f; background: #fff7e4; border-radius: 10px; font-size: calc(13px * var(--font-scale)); line-height: 1.7; overflow-wrap: anywhere; }
.web-app .web-course-player:fullscreen { display: flex; flex-direction: column; width: 100%; max-width: none; height: 100%; padding: 0; border: 0; border-radius: 0; background: #101a2d; overflow-y: auto; }
.web-app .web-course-player:fullscreen .web-player-screen { flex: 1 1 auto; aspect-ratio: auto; min-height: 180px; }
.web-app .web-course-player:fullscreen .web-player-controls { flex: 0 0 auto; width: 100%; max-width: 1400px; align-self: center; }

@media (min-width: 1080px) {
  .web-app .page[data-page="player"] > .web-course-player { grid-column: 1; grid-row: 2 / 6; align-self: start; }
}
@media (max-width: 1079px) {
  .web-app .page[data-page="player"] > .web-course-player { margin-bottom: 22px; }
  .web-app .page[data-page="player"] > .sticky-action { position: static; }
}
.web-app.font-large .web-player-control-row { gap: 10px 18px; }
.web-app.font-large .web-player-volume { flex-wrap: wrap; }
.web-app.font-large .web-player-error { position: relative; min-height: 300px; }
.web-app.font-large .web-player-screen:has(.web-player-error:not([hidden])) > video { visibility: hidden; }
.web-app.font-large .web-player-status-row { margin-top: 14px; }
.web-app.font-large .page[data-page="player"] > .web-course-player { margin-bottom: 24px; }
@media (max-width: 680px) {
  .web-app .web-course-player { border-radius: 18px; }
  .web-app .web-player-controls { padding: 10px 12px 14px; }
  .web-app .web-player-control-row { gap: 8px; justify-content: space-between; }
  .web-app .web-player-transport { gap: 0; }
  .web-app .web-player-controls button { padding-inline: 8px; }
  .web-app .web-player-speed { gap: 5px; }
  .web-app .web-player-volume { flex: 1; }
  .web-app .web-player-controls .web-player-fullscreen { margin-left: 0; }
  .web-app .web-player-shortcuts { display: none; }
  .web-app .web-player-center { min-height: 90px; padding: 14px 20px; gap: 7px; }
  .web-app .web-player-center .icon { width: 27px; height: 27px; }
  .web-app.font-large .web-player-seek-row { gap: 7px; font-size: calc(12px * var(--font-scale)); }
  .web-app.font-large .web-player-transport { width: 100%; justify-content: space-between; }
  .web-app.font-large .web-player-transport > button { flex: 1; }
  .web-app.font-large .web-player-speed { flex: 1 1 100%; justify-content: space-between; }
  .web-app.font-large .web-player-speed select { width: 50%; }
  .web-app.font-large .web-player-volume { flex: 1 1 100%; }
  .web-app.font-large .web-player-volume input { max-width: none; flex: 1; }
  .web-app.font-large .web-player-controls .web-player-fullscreen { width: 100%; background: #f2f5fc; }
  .web-app.font-large .web-player-screen { min-height: 230px; }
}
@media (prefers-reduced-motion: reduce) { .web-app .web-player-spinner { animation: none; } }
@keyframes web-player-spin { to { transform: rotate(360deg); } }