/* Evidence remains canonical. These rules only control player-facing hierarchy. */
.adaptive-session-topic .adaptive-exercise-focus { height: auto; max-height: none; background: none; border: 0; padding: 0; box-shadow: none; overflow: visible; }
.adaptive-session-topic .topic-exercises { padding: 8px 0 24px; }
.adaptive-session-topic .topic-exercise-list { margin-top: 18px; }
.adaptive-session-topic .topic-exercise-card { animation: session-activity-arrive .18s ease-out; }
.session-accessible-status { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
@keyframes session-activity-arrive { from { opacity: .65; transform: translateY(4px); } to { opacity: 1; transform: none; } }
html:not([data-player-diagnostics="true"]) :is(.exercise-diagnostics, .game-entry-diagnostics, .adaptive-session-diagnostics) { display: none; }
.practice-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.practice-heading h2 { margin: 0; font-size: 1rem; color: var(--teal); }
.practice-progress-details { text-align: right; max-width: 60%; }
.practice-progress-details > summary { min-height: 44px; align-content: center; cursor: pointer; font-size: .7rem; color: #bcd5ec; }
.practice-progress-details > small { display: block; padding-bottom: 10px; line-height: 1.6; }
.topic-exercise-card[data-exercise-slide] { padding: 18px 16px; border-radius: 20px; min-height: 0; }
.topic-exercise-card > header { margin-bottom: 18px; }
.topic-exercise-card .exercise-task { font-size: .87rem; line-height: 1.5; color: #d7e9f6; margin-bottom: 10px; }
.topic-exercise-card .exercise-question { font-size: clamp(1.18rem, 4.5vw, 1.5rem); line-height: 1.45; margin-bottom: 12px; }
.topic-exercise-card .exercise-response-instruction { margin: 18px 0 14px; padding: 10px 12px; }
.topic-exercise-card .exercise-response-instruction > strong { font-size: .75rem; }
.topic-exercise-card .exercise-options { gap: 10px; }
.topic-exercise-card .exercise-options > button { min-height: 52px; border-radius: 13px; font-size: 1rem; padding: 12px; box-shadow: 0 3px 0 #041326; transition: transform .12s, background-color .12s; }
.topic-exercise-card .exercise-options > button:active { transform: translateY(2px); box-shadow: 0 1px 0 #041326; }
.topic-exercise-card .written-answer { gap: 12px; }
.topic-exercise-card .written-answer input { min-height: 54px; font-size: 1.08rem; border-radius: 13px; }
.topic-exercise-card .written-answer > button { min-height: 52px; border-radius: 13px; }
.topic-exercise-card .exercise-feedback:empty, .topic-exercise-card .exercise-sync-status:empty, .topic-exercise-card .exercise-followup:empty { display: none; }
.topic-exercise-card .exercise-feedback:not(:empty) { margin-top: 18px; padding: 14px; border-radius: 14px; line-height: 1.55; background: #102d3c; }
.topic-exercise-card .exercise-feedback.wrong { background: #392536; color: #ffccd0; }
.answer-verdict { display: block; margin-bottom: 5px; }
.topic-exercise-card .exercise-followup { gap: 10px; }
.topic-exercise-card .exercise-followup > button { width: 100%; min-height: 50px; border-radius: 13px; }
.topic-exercise-card .exercise-followup > [data-review-lesson] { background: transparent; color: #c8e9ef; border-color: #547795; }
.topic-exercise-card .exercise-sync-status { font-size: .7rem; line-height: 1.5; }
.topic-exercise-card .exercise-diagnostics { margin-top: 16px; }
.topic-exercise-card .exercise-diagnostics > summary { min-height: 44px; align-content: center; }
.topic-exercise-card.correct[data-answered="true"] .answer-verdict { animation: answer-arrive .22s ease-out; }
.topic-exercise-card.wrong[data-answered="true"] .answer-verdict { animation: answer-arrive .22s ease-out; }
@keyframes answer-arrive { from { opacity: .25; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }
@media (prefers-reduced-motion: reduce) {
  .topic-exercise-card *, .topic-exercise-card { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}

/* Session Player only. Free practice, Hub, Summary and the topic pager retain
   their own presentation. The activity is the surface, not a nested alert card. */
.adaptive-session-topic { padding-inline: 22px; }
.adaptive-session-topic .topic-screen-backdrop { background: #07162d; }
.adaptive-session-topic .topic-screen-header { max-width: 680px; min-height: 76px; padding-block: 12px; gap: 10px; border: 0; grid-template-columns: 40px minmax(0, 1fr) auto; }
.adaptive-session-topic .topic-screen-header small { color: #b3c7dc; font-size: .62rem; line-height: 1.5; text-transform: none; font-weight: 600; }
.adaptive-session-topic .topic-screen-header h1 { font-size: .94rem; line-height: 1.25; }
.adaptive-session-topic .topic-back-button,
.adaptive-session-topic .topic-header-actions > button { background: transparent; border: 0; width: 40px; height: 44px; }
.adaptive-session-topic .topic-header-actions { gap: 6px; }
.adaptive-session-topic .topic-screen-progress strong { color: #e5f2fb; font-size: .9rem; font-variant-numeric: tabular-nums; }
.adaptive-session-topic .topic-screen-progress span { display: none; }
.adaptive-session-topic .topic-screen-content { max-width: 640px; }
.adaptive-session-topic .topic-exercises { padding: 0 0 max(24px, env(safe-area-inset-bottom)); }
.adaptive-session-topic .session-block-progress { margin: 0 0 28px; grid-template-columns: 1fr; }
.adaptive-session-topic [data-block-progress] { width: 100%; height: 5px; }
.adaptive-session-topic [data-block-progress-label] { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.adaptive-session-topic .topic-exercise-list { margin-top: 0; }
.adaptive-session-topic .topic-exercise-card[data-exercise-slide] { border: 0; border-radius: 0; padding: 6px 0 0; background: none; box-shadow: none; }
.adaptive-session-topic .topic-exercise-card > header { margin: 0 0 10px; }
.adaptive-session-topic .exercise-task { color: #b3c7dc; font-size: .86rem; font-weight: 500; line-height: 1.5; margin: 0 0 16px; }
.adaptive-session-topic .exercise-question { color: #f0f5fc; font-size: clamp(1.5rem, 6vw, 2rem); line-height: 1.45; font-weight: 750; letter-spacing: -.02em; margin: 0 0 24px; overflow-wrap: anywhere; }
.adaptive-session-topic .question-blank { border-color: #b3c7dc; width: 52px; }
.adaptive-session-topic .exercise-subtitle { color: #b3c7dc; margin: -12px 0 22px; line-height: 1.5; font-size: .9rem; }
.adaptive-session-topic .written-answer { grid-template-columns: 1fr; gap: 24px; margin-top: 24px; }
.adaptive-session-topic .written-answer input { min-height: 60px; background: #102944; border: 1px solid #526981; border-radius: 12px; color: #f0f5fc; padding: 14px 16px; font-size: 1.12rem; }
.adaptive-session-topic .written-answer label { min-width: 0; }
.adaptive-session-topic .exercise-options { grid-template-columns: 1fr; gap: 12px; margin-top: 24px; }
.adaptive-session-topic .exercise-options > button { min-height: 56px; padding: 14px 18px; background: #102944; border: 1px solid #526981; box-shadow: none; text-align: left; font-weight: 600; overflow-wrap: anywhere; }
.adaptive-session-topic .order-built { background: transparent; border: 0; border-bottom: 1px solid #526981; border-radius: 0; min-height: 76px; padding: 12px 0; }
.adaptive-session-topic .order-bank { background: none; border: 0; padding: 14px 0; gap: 10px; }
.adaptive-session-topic :is(.order-bank, .order-built) button { min-height: 48px; border-radius: 10px; padding-inline: 14px; }
.adaptive-session-topic .order-actions { margin-top: 20px; }
.adaptive-session-topic .order-actions > [data-order-check] { flex: 1; }
.adaptive-session-topic :is(button,input):focus-visible { outline: 2px solid #f5d36c; outline-offset: 4px; }
.adaptive-session-topic .exercise-question:focus { outline: none; }
.adaptive-session-topic .exercise-diagnostics { color: #a4bbd0; font-size: .7rem; }
.adaptive-session-topic :is([data-player-check], [data-adaptive-next], [data-oral-start]) { min-height: 54px; border: 0; border-radius: 13px; padding: 14px 18px; background: var(--gold); color: #14213a; font: inherit; font-size: 1rem; font-weight: 750; cursor: pointer; }
.adaptive-session-topic .player-check { width: 100%; margin-top: 24px; }
.adaptive-session-topic [data-player-check]:disabled { background: #213851; color: #a5b7ca; cursor: default; }
.adaptive-session-topic .exercise-options > button[aria-pressed="true"] { border-color: #e8c369; background: #25364a; box-shadow: inset 0 0 0 1px #e8c369; }
.adaptive-session-topic .exercise-options > button[aria-pressed="true"]::after { content: '✓'; float: right; margin-left: 10px; }
.adaptive-session-topic :is([data-listening-play], [data-oral-listen]) { min-height: 48px; padding: 10px 14px; border: 1px solid #526981; border-radius: 12px; background: #102944; color: #e5f2fb; font: inherit; font-size: .9rem; cursor: pointer; }
.adaptive-session-topic :is([data-listening-status], .oral-transcript, .player-oral-help) { color: #b3c7dc; font-size: .8rem; line-height: 1.5; }
.adaptive-session-topic .oral-answer { display: flex; flex-direction: column; gap: 12px; }
.adaptive-session-topic .oral-answer > [data-oral-listen] { background: #102944; border-color: #526981; color: #e5f2fb; font-weight: 500; }
.adaptive-session-topic .oral-answer > [data-oral-start]:disabled { background: #213851; color: #a5b7ca; opacity: 1; cursor: default; }
.adaptive-session-topic .oral-transcript { background: none; border: 0; border-radius: 0; padding: 0; min-height: 0; margin-block: 12px; }
.adaptive-session-topic .player-oral-help > summary { min-height: 44px; align-content: center; cursor: pointer; }
.adaptive-session-topic [data-player-state]:not([data-player-state="answering"]) :is(.written-answer, .exercise-options, .order-actions, .order-bank, .order-built, .player-check, .oral-answer, [data-listening-play], [data-listening-status]) { display: none; }
.adaptive-session-topic [data-player-state]:not([data-player-state="answering"]) > .player-oral-help { display: none; }
.adaptive-session-topic .exercise-feedback:not(:empty) { padding: 22px 0 0; margin-top: 26px; background: none; border-radius: 0; border-top: 1px solid #2a3c53; font-weight: 500; color: #e5f2fb; }
.adaptive-session-topic .answer-verdict { font-size: .9rem; font-weight: 700; color: #b3c7dc; margin-bottom: 14px; }
.adaptive-session-topic .exercise-feedback.correct .answer-verdict { color: #78d6bf; }
.adaptive-session-topic .answer-expected-label { display: block; color: #b3c7dc; font-size: .86rem; margin-bottom: 5px; }
.adaptive-session-topic .answer-expected { display: block; color: #f0f5fc; font-size: clamp(1.4rem, 6vw, 1.85rem); line-height: 1.4; font-weight: 750; overflow-wrap: anywhere; }
.adaptive-session-topic .exercise-followup { margin-top: 26px; }
.adaptive-session-topic .exercise-followup > [data-adaptive-next] { width: 100%; }
.adaptive-session-topic [data-adaptive-next]:disabled { opacity: .65; cursor: wait; }
.adaptive-session-topic [data-player-state="feedback"] [data-adaptive-next]:disabled { cursor: not-allowed; }
.adaptive-session-topic [data-listening-status]:empty { display: none; }
.adaptive-session-topic [data-exercise-sync-status][data-sync-state="accepted"] { display: none; }
.adaptive-session-topic .exercise-sync-status:not(:empty) { margin-top: 18px; font-size: .8rem; line-height: 1.5; }
.adaptive-session-topic .exercise-sync-status.error { border-left: 3px solid #f6bd77; color: #ffcf99; padding-left: 12px; }
@media (max-height: 560px) {
  .adaptive-session-topic .topic-screen-header { position: static; min-height: 58px; padding-block: 5px; }
  .adaptive-session-topic .session-block-progress { margin-bottom: 14px; }
  .adaptive-session-topic .exercise-question { font-size: 1.35rem; margin-bottom: 14px; }
  .adaptive-session-topic .written-answer { gap: 14px; margin-top: 14px; }
}