/* The intro player's visual language, scoped to uploaded lesson files. */
[data-lesson-player] { --lesson-accent: #36c7ff; isolation: isolate; }
[data-lesson-player] .lesson-controls { display: none; }
[data-lesson-player].is-enhanced .lesson-controls { position: absolute; inset: auto 0 0; z-index: 3; display: grid; gap: 0; padding: 28px 16px max(10px, env(safe-area-inset-bottom)); background: linear-gradient(transparent, #04111de8); color: #fff; direction: ltr; transition: opacity 180ms ease; }
.lesson-controls-row { display: flex; align-items: center; gap: 8px; min-width: 0; }
.lesson-control { display: grid; place-items: center; flex: 0 0 44px; width: 44px; height: 44px; padding: 0; border: 1px solid #ffffff45; border-radius: 50%; background: #ffffff16; color: #fff; cursor: pointer; transition: background 160ms ease, transform 160ms ease; }
.lesson-control:hover { background: #007eaf; transform: translateY(-1px); }
.lesson-control svg { width: 20px; height: 20px; }
.lesson-control .lesson-icon-pause, .lesson-control .lesson-volume-muted { display: none; }
[data-lesson-player].is-playing .lesson-icon-play, [data-lesson-mute][aria-pressed="true"] .lesson-volume-waves { display: none; }
[data-lesson-player].is-playing .lesson-icon-pause, [data-lesson-mute][aria-pressed="true"] .lesson-volume-muted { display: block; }
.lesson-time { color: #fff; font: 500 12px/1.5 var(--site-font), Tahoma, sans-serif; font-variant-numeric: tabular-nums; white-space: nowrap; }
.lesson-controls-spacer { flex: 1; }
.lesson-speed select { width: 67px; min-height: 44px; padding: 0 6px; border: 1px solid #ffffff45; border-radius: 12px; background: #ffffff16; color: #fff; font: 600 12px var(--site-font), Tahoma, sans-serif; cursor: pointer; }
.lesson-speed select:hover { background: #007eaf; }
.lesson-speed option { color: #10203b; background: #fff; }
.lesson-seek, .lesson-volume { display: block; width: 100%; height: 32px; min-width: 0; margin: 0; padding: 0; appearance: none; -webkit-appearance: none; border: 0; background: transparent; cursor: pointer; direction: ltr; }
.lesson-volume { flex: 0 0 68px; width: 68px; height: 44px; }
.lesson-seek::-webkit-slider-runnable-track, .lesson-volume::-webkit-slider-runnable-track { height: 4px; border-radius: 99px; background: linear-gradient(to right, var(--lesson-accent) 0 var(--lesson-progress, 0%), #ffffff70 var(--lesson-progress, 0%) 100%); }
.lesson-volume::-webkit-slider-runnable-track { background: linear-gradient(to right, var(--lesson-accent) 0 var(--lesson-volume, 100%), #ffffff70 var(--lesson-volume, 100%) 100%); }
.lesson-seek::-moz-range-track, .lesson-volume::-moz-range-track { height: 4px; border-radius: 99px; background: #ffffff70; }
.lesson-seek::-moz-range-progress, .lesson-volume::-moz-range-progress { height: 4px; border-radius: 99px; background: var(--lesson-accent); }
.lesson-seek::-webkit-slider-thumb, .lesson-volume::-webkit-slider-thumb { width: 14px; height: 14px; margin-top: -5px; appearance: none; -webkit-appearance: none; border: 2px solid #fff; border-radius: 50%; background: #007eaf; box-shadow: 0 1px 5px #00152488; }
.lesson-seek::-moz-range-thumb, .lesson-volume::-moz-range-thumb { width: 10px; height: 10px; border: 2px solid #fff; border-radius: 50%; background: #007eaf; box-shadow: 0 1px 5px #00152488; }
.lesson-seek:disabled { opacity: .45; cursor: wait; }
[data-lesson-player] :is(button, select, input):focus-visible, [data-lesson-player] video:focus-visible { outline: 3px solid #8ce2ff; outline-offset: 2px; }
.lesson-player-status { position: absolute; inset: 14px auto auto 14px; z-index: 4; max-width: min(85%, 380px); margin: 0; padding: 10px 14px; border: 1px solid #d2e8f1; border-radius: 12px; background: #fff; color: #10203b; font-size: 12px; line-height: 1.8; direction: rtl; }
[data-lesson-player]:fullscreen { width: 100%; height: 100%; background: #000; }
[data-lesson-player]:fullscreen video { width: 100%; height: 100%; object-fit: contain; }
@media (hover: hover) and (pointer: fine) {
  [data-lesson-player].is-playing.is-controls-hidden:not(:focus-within) .lesson-controls { opacity: 0; pointer-events: none; }
}
@media (max-width: 620px) {
  [data-lesson-player].is-enhanced .lesson-controls { padding: 14px 8px max(6px, env(safe-area-inset-bottom)); }
  .lesson-controls-row { gap: 4px; }
  .lesson-time { font-size: 10px; }
  .lesson-volume { display: none; }
  .lesson-speed select { width: 59px; font-size: 11px; }
  .lesson-seek { height: 28px; }
}
@media (prefers-reduced-motion: reduce) {
  [data-lesson-player] .lesson-controls, [data-lesson-player] .lesson-control { transition: none; }
}