/* Immersive video lessons: quiet surfaces, readable type, and one accent color. */
body[data-screen="video"].video-practicing {
  --video-canvas: #f5f7f6;
  --video-ink: #233b3a;
  --video-muted: #637773;
  --video-accent: #087f72;
  --video-line: #dce5e1;
  background: var(--video-canvas);
  color: var(--video-ink);
}

body[data-screen="video"].video-practicing .product-shell {
  background: var(--video-canvas);
}

body[data-screen="video"].video-practicing .video-lesson-shell {
  width: min(100%, 1000px);
  gap: 0;
}

body[data-screen="video"].video-practicing .video-stage-card {
  gap: 6px;
  padding: 10px 10px 12px;
  background: #fff;
  border: 1px solid var(--video-line);
  border-radius: 18px;
  box-shadow: 0 3px 16px #233b3a05;
  backdrop-filter: none;
}

body[data-screen="video"].video-practicing .video-frame {
  border: 0;
  border-radius: 12px;
  box-shadow: none;
}

body[data-screen="video"].video-practicing .video-frame-label :is(span, strong) {
  min-height: 26px;
  color: #fff;
  background: #162422a6;
  border: 1px solid #ffffff26;
  border-radius: 8px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

body[data-screen="video"].video-practicing .video-preview-subtitle {
  min-height: 36px;
  padding: 5px 12px;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  backdrop-filter: none;
}

/* Reserve the same space throughout a full film, including gaps between cues.
   Sentence drills keep their compact subtitle strip above. */
body[data-screen="video"].video-practicing.video-full-preview .video-preview-subtitle {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-content: safe center;
  box-sizing: border-box;
  height: 76px;
  min-height: 76px;
  padding: 4px 12px;
  overflow-x: hidden;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: #bfd4c8 transparent;
}

body[data-screen="video"].video-practicing.video-full-preview .video-subtitle-placeholder {
  display: none;
}

body[data-screen="video"].video-practicing.video-full-preview :is(.video-subtitle-en, .video-subtitle-cn) {
  overflow-wrap: anywhere;
}

body[data-screen="video"].video-practicing .video-subtitle-cn {
  color: var(--video-ink);
  font-size: clamp(17px, 1.5vw, 20px);
  font-weight: 500;
  text-shadow: none;
}

body[data-screen="video"].video-practicing .video-subtitle-en {
  color: var(--video-accent);
  font-size: clamp(17px, 1.5vw, 20px);
  font-weight: 600;
  text-shadow: none;
}

body[data-screen="video"].video-practicing .video-under-controls {
  gap: 4px 8px;
}

body[data-screen="video"].video-practicing .video-under-button {
  min-height: 36px;
  padding: 6px 12px;
  color: var(--video-muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 9px;
  box-shadow: none;
  font-size: 14px;
  font-weight: 500;
  transition: background .15s ease, color .15s ease;
}

body[data-screen="video"].video-practicing .video-under-button.primary,
body[data-screen="video"].video-practicing .video-under-button.is-active {
  color: var(--video-accent);
  background: #eff8f5;
  border-color: transparent;
}

body[data-screen="video"].video-practicing .video-under-button:hover {
  color: var(--video-accent);
  background: #e6f2ed;
  border-color: transparent;
  transform: none;
}

/* Keep the retracting tab attached to the player, without a floating dark pill. */
body[data-screen="video"].video-practicing .video-lesson-head {
  flex-direction: row;
  align-items: flex-start;
}

body[data-screen="video"].video-practicing .video-lesson-actions .ghost-action {
  color: #48625c;
  background: #e8efeb;
  border-color: #d5e0da;
  font-weight: 500;
}

body[data-screen="video"].video-practicing .video-lesson-actions .ghost-action:hover {
  color: var(--video-accent);
  background: #dfeee7;
}

/* The exercise belongs to the page rather than another large boxed panel. */
body[data-screen="video"].video-practicing .video-drill-card {
  min-height: 0;
  color: var(--video-ink);
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

body[data-screen="video"].video-practicing .video-drill-card:not(.is-complete) {
  gap: 14px;
  padding: 20px 24px 18px;
}

body[data-screen="video"].video-practicing .video-drill-top :is(span, strong) {
  gap: 8px;
  min-height: 32px;
  padding: 0;
  color: var(--video-muted);
  background: transparent;
  border-radius: 0;
  font-size: 14px;
  font-weight: 500;
}

body[data-screen="video"].video-practicing #videoLevel::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #42a992;
}

body[data-screen="video"].video-practicing .video-mode-toggle {
  gap: 6px;
  min-height: 34px;
  padding: 6px 12px;
  color: var(--video-accent);
  background: #e7f2ed;
  border: 1px solid transparent;
  border-radius: 9px;
  box-shadow: none;
  font-size: 14px;
  font-weight: 500;
}

body[data-screen="video"].video-practicing .video-mode-toggle::before {
  content: "⇄";
  font-size: 17px;
  line-height: 1;
}

body[data-screen="video"].video-practicing .video-mode-toggle:hover {
  background: #dcece4;
  transform: none;
}

body[data-screen="video"].video-practicing .video-line-copy p {
  color: var(--video-ink);
  font-size: clamp(26px, 2.5vw, 34px);
  font-weight: 600;
  line-height: 1.45;
  text-shadow: none;
}

body[data-screen="video"].video-practicing .video-line-copy small {
  color: var(--video-muted);
  font-weight: 400;
}

body[data-screen="video"].video-practicing .video-answer-box {
  min-height: 74px;
  margin-top: 0;
  padding: 12px 0 16px;
}

body[data-screen="video"].video-practicing .word-slot {
  font-size: clamp(25px, 2.4vw, 32px);
}

body[data-screen="video"].video-practicing .word-slot .word-input {
  color: var(--video-ink);
  caret-color: var(--video-accent);
  border-bottom: 2px solid #9aafa7;
  font-weight: 500;
  text-shadow: none;
  box-shadow: none;
}

body[data-screen="video"].video-practicing .word-slot .word-input:focus {
  border-bottom-color: var(--video-accent);
}

body[data-screen="video"].video-practicing .word-slot.is-mismatch {
  background: #fff0ed;
  outline: 1px solid #cf7064;
  box-shadow: none;
}

body[data-screen="video"].video-practicing .word-slot.is-mismatch .word-input {
  color: #a94036;
  border-bottom-color: #bd5145;
}

body[data-screen="video"].video-practicing .video-control-dock {
  display: flex;
  gap: 12px;
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
}

body[data-screen="video"].video-practicing .video-control-dock .dock-button {
  width: 46px;
  height: 44px;
  color: #536c64;
  background: #fff;
  border: 1px solid #d6e1db;
  border-radius: 12px;
  box-shadow: none;
}

body[data-screen="video"].video-practicing .video-control-dock .dock-button svg {
  stroke-width: 1.8;
}

body[data-screen="video"].video-practicing .video-control-dock .dock-button:hover,
body[data-screen="video"].video-practicing .video-control-dock .dock-button.is-active {
  color: var(--video-accent);
  background: #e6f3ec;
  border-color: #9bcaba;
  transform: none;
}

body[data-screen="video"].video-practicing .video-control-dock .dock-button.primary {
  color: #fff;
  background: #128575;
  border-color: #128575;
  box-shadow: none;
}

body[data-screen="video"].video-practicing .video-control-dock .dock-button.primary:hover {
  background: #087363;
  border-color: #087363;
}

body[data-screen="video"].video-practicing .video-focus-line {
  color: var(--video-muted);
  font-size: 14px;
  font-weight: 400;
}

/* Speaking, hints and results share the same quiet palette. */
body[data-screen="video"].video-practicing .video-read-result {
  min-height: 0;
}

body[data-screen="video"].video-practicing .video-read-result #videoReadStatus {
  color: var(--video-ink);
  font-size: 17px;
  font-weight: 500;
}

body[data-screen="video"].video-practicing .video-drill-card.is-speaking .video-read-panel {
  gap: 18px;
  padding: 16px 0 10px;
}

body[data-screen="video"].video-practicing .video-drill-card.is-speaking .video-read-mic {
  color: var(--video-accent);
  background: #d9efe6;
  box-shadow: 0 0 0 5px #eaf3ee;
}

body[data-screen="video"].video-practicing .video-drill-card.is-speaking .video-read-mic.is-recording {
  color: #9b4c40;
  background: #ffe3d8;
  box-shadow: 0 0 0 5px #fff0e9;
}

body[data-screen="video"].video-practicing .video-read-score {
  color: var(--video-ink);
  background: #fff;
  border-color: var(--video-line);
  box-shadow: none;
}

body[data-screen="video"].video-practicing .video-read-score.is-good { border-color: #a3cdbc; }
body[data-screen="video"].video-practicing .video-read-score.is-try { border-color: #d9c393; }

body[data-screen="video"].video-practicing .video-read-score-head strong {
  color: var(--video-accent);
  background: #e5f4ec;
}

body[data-screen="video"].video-practicing .video-read-score-head span {
  color: var(--video-ink);
  font-weight: 600;
}

body[data-screen="video"].video-practicing .video-read-score-head small {
  color: var(--video-muted);
}

body[data-screen="video"].video-practicing .video-read-score-grid span {
  color: var(--video-muted);
  background: #f3f7f5;
  font-weight: 500;
}

body[data-screen="video"].video-practicing .video-read-score-grid b { color: var(--video-accent); }

body[data-screen="video"].video-practicing .video-hint-panel {
  color: var(--video-ink);
  background: #fffffff5;
  border-color: #c9ded3;
  box-shadow: 0 8px 32px #233b3a1a;
}

body[data-screen="video"].video-practicing .video-hint-panel strong { color: var(--video-ink); }
body[data-screen="video"].video-practicing .video-hint-panel p { color: var(--video-muted); }
body[data-screen="video"].video-practicing .video-hint-panel :is(span, #videoHintFocus) { color: var(--video-accent); }
body[data-screen="video"].video-practicing .video-hint-panel .hint-heading button {
  color: var(--video-muted);
  background: #f3f7f5;
  border-color: transparent;
}

body[data-screen="video"].video-practicing .video-completion-card,
body[data-screen="video"].video-practicing .video-completion-card h2 { color: var(--video-ink); }
body[data-screen="video"].video-practicing .video-completion-card :is(p, .video-completion-note),
body[data-screen="video"].video-practicing .video-completion-stats span { color: var(--video-muted); }
body[data-screen="video"].video-practicing .video-completion-card .video-completion-kicker,
body[data-screen="video"].video-practicing .video-completion-time strong,
body[data-screen="video"].video-practicing .video-completion-stats strong { color: var(--video-accent); }
body[data-screen="video"].video-practicing .video-completion-stats > div,
body[data-screen="video"].video-practicing .video-completion-card .video-completion-time {
  color: var(--video-ink);
  background: #fff;
  border-color: var(--video-line);
}
body[data-screen="video"].video-practicing .video-completion-actions button {
  color: var(--video-accent);
  background: #fff;
  border-color: #bfd4c8;
}
body[data-screen="video"].video-practicing .video-completion-actions .completion-primary {
  color: #fff;
  background: #128575;
  border-color: #128575;
}

body[data-screen="video"].video-practicing :is(button, summary):focus-visible {
  outline: 2px solid #087f72;
  outline-offset: 3px;
}

/* A full-film preview needs only its player; the empty drill shell adds no content. */
body[data-screen="video"].video-full-preview .video-drill-card.is-previewing { display: none; }

@media (max-width: 760px) {
  body[data-screen="video"].video-practicing.video-full-preview .video-preview-subtitle {
    height: 108px;
    min-height: 108px;
  }
  body[data-screen="video"].video-practicing .video-stage-card {
    padding: 6px 6px 8px;
    border-radius: 14px;
  }
  body[data-screen="video"].video-practicing .video-frame { border-radius: 9px; }
  body[data-screen="video"].video-practicing .video-under-controls {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 4px;
  }
  body[data-screen="video"].video-practicing .video-under-button {
    justify-content: center;
    min-height: 36px;
    padding: 5px 7px;
    font-size: 13px;
  }
  body[data-screen="video"].video-practicing .video-drill-card:not(.is-complete) {
    padding: 16px 8px;
    gap: 14px;
  }
  body[data-screen="video"].video-practicing .video-line-copy p { font-size: 26px; }
  body[data-screen="video"].video-practicing .video-drill-top :is(span, strong),
  body[data-screen="video"].video-practicing .video-mode-toggle { font-size: 13px; }
  body[data-screen="video"].video-practicing .video-read-score-grid span { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  body[data-screen="video"].video-practicing .video-under-button { transition: none; }
}

.video-fullscreen-button {
  position: absolute; top: 12px; right: 12px; z-index: 12;
  display: grid; place-items: center; width: 40px; height: 40px; padding: 9px;
  color: #fff; background: #102321b8; border: 1px solid #ffffff50; border-radius: 10px; cursor: pointer;
}
.video-fullscreen-button[hidden] { display: none; }
.video-fullscreen-button:hover { background: #203d39; }
.video-fullscreen-button:focus-visible { outline: 2px solid #7ee1cd; outline-offset: 3px; }
.video-fullscreen-button svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.video-fullscreen-button .icon-collapse,
.video-fullscreen-button.is-fullscreen .icon-expand { display: none; }
.video-fullscreen-button.is-fullscreen .icon-collapse { display: block; }

/* Keep the movie, bilingual subtitles and controls together in fullscreen. */
body[data-screen="video"] .video-stage-card:fullscreen {
  position: fixed; inset: 0; display: grid;
  grid-template-rows: minmax(0, 1fr) auto auto; align-content: stretch;
  box-sizing: border-box; width: 100%; height: 100%; max-width: none; max-height: none;
  margin: 0; padding: 10px; gap: 4px; border: 0; border-radius: 0;
  background: #080e10; box-shadow: none; overflow: hidden;
}
body[data-screen="video"] .video-stage-card:fullscreen .video-frame {
  width: 100%; height: 100%; min-height: 0; max-width: none; max-height: none;
  aspect-ratio: auto; margin: 0; border-radius: 10px;
}
body[data-screen="video"] .video-stage-card:fullscreen .video-frame video { width: 100%; height: 100%; object-fit: contain; }
body[data-screen="video"] .video-stage-card:fullscreen .video-lesson-head { display: none; }
body[data-screen="video"] .video-stage-card:fullscreen .video-preview-subtitle {
  display: grid; align-content: safe center; box-sizing: border-box;
  height: 76px; min-height: 76px; padding: 4px 12px; background: transparent;
  border: 0; overflow: auto; scrollbar-width: thin;
}
body[data-screen="video"] .video-stage-card:fullscreen .video-subtitle-placeholder { display: none; }
body[data-screen="video"] .video-stage-card:fullscreen .video-subtitle-cn { color: #eff8f5; }
body[data-screen="video"] .video-stage-card:fullscreen .video-subtitle-en { color: #83dfcb; }
body[data-screen="video"] .video-stage-card:fullscreen .video-under-controls { display: flex; flex-wrap: wrap; justify-content: center; }
body[data-screen="video"] .video-stage-card:fullscreen .video-under-button { color: #c0d3ce; background: #172925; border-color: transparent; box-shadow: none; }
body[data-screen="video"] .video-stage-card:fullscreen .video-under-button:is(:hover, .is-active) { color: #b9f4e5; background: #204039; }
@media (max-width: 760px) and (orientation: portrait) {
  body[data-screen="video"] .video-stage-card:fullscreen .video-preview-subtitle { height: 108px; min-height: 108px; }
}