/* Library, reference, conversation, review, and account surfaces share the exercise screen's quieter hierarchy. */
#main { --page-muted: #716780; }
html[data-theme="dark"] #main { --page-muted: #bcb0cd; }
#main:is([data-view="conversations"],[data-view="roleplay"],[data-view="review"]) { --conv-muted: var(--page-muted); }
html[data-theme="dark"] .primary { background: #8060ba; border-color: #9b7ace; }
html[data-theme="dark"] .primary:hover:not(:disabled) { background: #7653b2; }
.page-heading { align-items: flex-start; gap: 20px; margin-bottom: 20px; }
.page-heading h1, .page-heading.conv-heading h1 { font-size: 28px; letter-spacing: -.6px; line-height: 1.3; }
.page-heading p { font-size: 13px; line-height: 1.75; margin-top: 8px; color: var(--page-muted); max-width: 65ch; }
.page-heading-actions { display: flex; align-items: center; justify-content: flex-end; gap: 12px; flex-wrap: wrap; flex-shrink: 0; }
.page-meta { font-size: 12px; line-height: 1.6; color: var(--page-muted); }
.page-heading-actions .primary { font-size: 13px; min-height: 44px; gap: 12px; }
.page-help { margin: 0 0 22px; color: var(--page-muted); font-size: 12px; }
.page-help summary { cursor: pointer; min-height: 36px; align-content: center; width: fit-content; }
.page-help p { max-width: 75ch; font-size: 13px; line-height: 1.8; padding: 8px 0 12px; }
#main .level-pill { font-size: 11px; padding: 4px 7px; }

/* Libraries: legible summaries and one clear way into each activity. */
.topic-grid { gap: 20px; }
.topic-card { padding: 23px; min-height: 240px; }
.topic-card h2 { font-size: 18px; font-weight: 600; line-height: 1.4; letter-spacing: -.25px; }
html .topic-card p { font-size: 13px; line-height: 1.75; color: var(--page-muted); margin-bottom: 16px; }
.topic-card-top { margin-bottom: 16px; }
.topic-card-bottom { align-items: center; gap: 12px; font-size: 12px; }
.topic-card-bottom .text-button { min-height: 44px; font-size: 12px; }
.topic-number, .topic-card-bottom { color: var(--page-muted); }
.reading-library-card { padding: 25px; display: flex; flex-direction: column; }
.reading-library-card h2 { font-size: 21px; font-weight: 600; line-height: 1.4; margin-bottom: 16px; }
.reading-preview { font-size: 22px; line-height: 1.7; min-height: 90px; margin-bottom: 20px; }
html .reading-card-meta, html .reading-credit { color: var(--page-muted); line-height: 1.7; }
.reading-card-meta { font-size: 12px; margin-top: auto; }
.reading-credit { font-size: 11px; }
.reading-library-card .primary { align-self: flex-start; font-size: 13px; min-height: 44px; }
.reading-meta { font-size: 11px; line-height: 1.5; }
.reading-source { font-size: 12px; }
.reading-source summary { min-height: 36px; align-content: center; }
.reading-source .text-button { min-height: 44px; font-size: 12px; }

/* Conversation practice: keep the dialogue first and help within reach. */
.conv-scene-art { min-height: 112px; gap: 10px; }
.conv-scene-art > svg { width: 30px; height: 30px; }
.conv-scene-art small { font-size: 20px; line-height: 1.4; }
.conv-scene-body { padding: 24px; }
.conv-scene-meta { gap: 10px; font-size: 12px; margin-bottom: 16px; }
.conv-scene-body h2 { font-size: 23px; line-height: 1.35; margin-bottom: 12px; }
.conv-scene-body > p { font-size: 13px; line-height: 1.8; min-height: 70px; }
.conv-scene-register { font-size: 12px; line-height: 1.7; padding: 12px 0; }
.conv-scene-bottom > small { font-size: 12px; line-height: 1.6; }
.conv-scene-bottom .primary { font-size: 13px; min-height: 44px; }
.conv-library-note { font-size: 12px; line-height: 1.8; max-width: 75ch; }
.conv-heading .text-button { margin: 0 0 12px; min-height: 36px; }
.conv-heading .page-heading-actions { padding-top: 12px; }
.conv-turn-counter { font-size: 12px; line-height: 1.5; }
.page-heading-actions .lesson-level { display: grid; gap: 6px; min-height: 44px; min-width: 94px; padding: 8px 10px; border: 1px solid var(--cefr-line); border-radius: 9px; }
.conv-utilities { align-items: flex-start; gap: 18px; margin-bottom: 20px; }
.conv-utilities > p { font-size: 13px; line-height: 1.8; max-width: 65ch; }
.conv-utilities > div { gap: 14px; }
.conv-speed { font-size: 12px; }
.conv-speed select { min-height: 44px; font-size: 13px; }
.conv-help-link { min-height: 44px; font-size: 12px; }
.conv-partner { padding: 26px; }
.conv-partner h2 { font-size: 27px; line-height: 1.65; }
.conv-partner > p { font-size: 13px; line-height: 1.8; }
.conv-speaker strong, .conv-register { font-size: 12px; }
.conv-register { padding: 4px 7px; }
.conv-audio { min-height: 44px; font-size: 12px; gap: 8px; padding: 9px 12px; }
.conv-composer-title { align-items: flex-start; }
.conv-composer-title h2 { font-size: 20px; }
.conv-composer-title > span { font-size: 12px; line-height: 1.7; }
.conv-goal { font-size: 13px; line-height: 1.8; }
.conv-field { font-size: 12px; line-height: 1.6; }
.conv-field select { font-size: 14px; min-height: 46px; }
.conv-grammar legend { font-size: 13px; line-height: 1.7; }
.conv-choice { min-height: 54px; font-size: 14px; }
.conv-choice-key { width: 36px; height: 36px; font-size: 12px; }
.conv-preview { border-left-width: 1px; }
.conv-preview > span, .conv-model > span { font-size: 12px; line-height: 1.7; }
.conv-feedback { font-size: 13px; line-height: 1.8; padding: 17px; }
.conv-feedback strong { font-size: 14px; }
.conv-send-actions .primary { font-size: 13px; min-height: 46px; }
.conv-assistant-head { margin-bottom: 20px; }
.conv-assistant-head small { font-size: 11px; line-height: 1.6; }
.conv-assistant-head small, .conv-menu summary > span, .conv-menu-row small,
.conv-menu-row > span + span, .conv-simulation { color: var(--conv-assist-text); }
.conversation-assistant h3 { font-size: 13px; margin: 20px 0 9px; }
.conversation-assistant p { font-size: 13px; line-height: 1.8; }
.conv-extra-hint { font-size: 12px; line-height: 1.8; border-left-width: 1px; }
.conv-related-rule { font-size: 12px; min-height: 44px; }
.conv-menu { font-size: 13px; line-height: 1.7; }
.conv-menu summary { min-height: 44px; }
.conv-menu summary > span { font-size: 11px; }
.conv-menu-row small, .conv-menu-row > span + span { font-size: 12px; line-height: 1.6; }
.conv-simulation { font-size: 12px; line-height: 1.8; }
.conv-audio-status { font-size: 12px; line-height: 1.7; }
.conv-complete { padding: 32px; }
.conv-complete p, .conv-guided-note { font-size: 13px !important; line-height: 1.8; }
.conv-extras { padding: 23px; }
.conv-extras p { font-size: 13px; line-height: 1.8; }
.conv-mini-grid button { min-height: 46px; font-size: 13px; }

/* Reference and review retain the content while giving it a readable measure. */
.case-reference { padding: 26px; }
.case-reference p { font-size: 14px; line-height: 1.8; max-width: 75ch; }
.case-reference .small { font-size: 12px; line-height: 1.8; }
.table-scroll { max-width: 100%; overscroll-behavior-x: contain; }
.case-reference table { min-width: 540px; }
.case-reference td, .case-reference th { font-size: 13px; line-height: 1.65; padding: 13px 14px; }
.case-reference caption { font-size: 12px; line-height: 1.7; }
#main .case-reference :is(td,th) { color: var(--ink); }
#main .case-reference caption { color: var(--page-muted); }
.note summary { min-height: 58px; font-size: 14px; line-height: 1.6; }
.note > p { font-size: 14px; line-height: 1.8; max-width: 75ch; }
.note .example { font-size: 16px; line-height: 1.8; }
.note .example, .case-reference .example { border-left-width: 1px; }
.note .text-button { font-size: 12px; min-height: 44px; }
.reference-note, .browser-settings { font-size: 12px; line-height: 1.8; }
html .reference-note, html .browser-settings { color: var(--page-muted); }
.browser-settings .text-button { min-height: 44px; font-size: 12px; }
.empty-card { min-height: 290px; padding: 34px 26px; border-radius: 14px; gap: 16px; }
.empty-card h2 { font: 600 22px/1.4 'DM Sans','Trebuchet MS',sans-serif; letter-spacing: -.3px; }
.empty-card p { font-size: 14px; max-width: 42ch; }
.empty-card .primary, .empty-card .secondary { min-height: 44px; font-size: 13px; }

/* Account controls use the same text sizes and touch targets as practice. */
#account-dialog { border-radius: 16px !important; }
#account-dialog h2 { font-size: 24px !important; line-height: 1.3; }
#account-dialog .account-intro { font-size: 14px; line-height: 1.75; }
#account-dialog form > label:not(.account-import) { font-size: 13px; }
#account-dialog input:not([type="checkbox"]) { min-height: 46px; font-size: 15px; }
#account-dialog .account-tabs button, #account-dialog .account-google { min-height: 44px; font-size: 13px; }
#account-dialog .account-import { font-size: 12px; line-height: 1.75; }
#account-dialog .account-small, #account-dialog .account-verification p { font-size: 12px !important; line-height: 1.8; }
#account-dialog .account-forgot, #account-dialog .account-verification button { min-height: 44px; font-size: 12px; }
#account-dialog .account-close { width: 44px; height: 44px; }
html:not([data-theme="dark"]) #account-dialog :is(.account-small,.account-divider) { color: #716780; }

@media(max-width: 1050px) {
  .reading-grid { grid-template-columns: 1fr; }
  .conv-scene-card { grid-template-columns: 130px minmax(0,1fr); }
  .conv-scene-art { min-height: 200px; }
  .conv-scene-body > p { min-height: 0; }
  .conversation-assistant { grid-row: auto; position: static; }
  .conv-help-link { position: fixed; bottom: 24px; right: 18px; z-index: 45; padding: 11px 15px; box-shadow: 0 4px 18px #16102225; }
}
@media(max-width: 720px) {
  .page-heading { flex-wrap: wrap; gap: 16px; margin-bottom: 18px; }
  .page-heading h1, .page-heading.conv-heading h1 { font-size: 25px; }
  .page-heading p { font-size: 13px; max-width: none; }
  .page-heading-actions { width: 100%; justify-content: space-between; }
  .page-meta { font-size: 12px; }
  .page-help summary { min-height: 44px; }
  .topic-card { padding: 21px; min-height: 225px; }
  .reading-library-card { padding: 22px; }
  .reading-preview { min-height: 0; font-size: 21px; }
  .reading-meta { font-size: 10px; }
  .conv-scene-art { min-height: 105px; }
  .conv-scene-body { padding: 22px; }
  .conv-scene-bottom { gap: 12px; }
  .conv-heading .page-heading-actions { padding-top: 0; }
  .conv-utilities { gap: 16px; }
  .conv-utilities > div { gap: 12px; }
  .conv-help-link { bottom: 84px; }
  .conv-partner { padding: 22px; }
  .conv-partner h2 { font-size: 25px; }
  .conv-composer-title { flex-wrap: wrap; gap: 4px; }
  .conv-field select, #account-dialog input:not([type="checkbox"]) { font-size: 16px; }
  .conv-complete { padding: 26px 20px; }
  .case-reference { padding: 21px 18px; }
  .case-reference td, .case-reference th { padding: 12px; }
  .note summary { gap: 10px; }
  .note-number { font-size: 11px; }
  .empty-card { padding: 28px 22px; }
}
@media(max-width: 560px) {
  .topic-grid { grid-template-columns: 1fr; }
}