/* css/theme.css */
/* Semantic screen palette. Component fallbacks retain the original light
   appearance, including administrator branding. Print/SVG/PDF colors are not
   inverted. Keep the two dark entry points identical for the no-JS fallback. */
@media screen {
  :root { color-scheme: light; }
  :root[data-theme="dark"], :root[data-theme="dark"] body {
    color-scheme: dark;
    --paper: #101827;
    --card: #172334;
    --card-bg: #172334;
    --ink: #e7edf6;
    --muted: #afbed1;
    --accent: #aacdfb;
    --accent-soft: #203754;
    --line: #34475f;
    --danger: #ffadba;
    --danger-soft: #422735;
    --muted-text: #afbed1;
    --ui-text: #e7edf6;
    --ui-muted: #afbed1;
    --ui-surface: #172334;
    --ui-surface-soft: #1c2b3f;
    --ui-border: #526985;
    --ui-accent-fill: #285589;
    --ui-danger-fill: #963247;
    --ui-ink-fill: #1c2f48;
    --surface: #172334;
    --surface-soft: #1c2b3f;
    --border: #34475f;
    --bg: #172334;
    --text: #e7edf6;
    --text-muted: #afbed1;
    --ui-brand-filter: brightness(2.3);
    --ui-select-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='10' viewBox='0 0 16 10' fill='none'%3E%3Cpath d='M2 2L8 8L14 2' stroke='%23AACDFB' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    --ui-info: #aacdfb;
    --ui-info-soft: #20334b;
    --ui-info-border: #537baa;
    --ui-success: #8ce0bb;
    --ui-success-soft: #193b32;
    --ui-success-border: #42876c;
    --ui-warning: #f6cf85;
    --ui-warning-soft: #3b3020;
    --ui-warning-border: #a58243;
    --ui-danger: #ffadba;
    --ui-danger-soft: #422735;
    --ui-danger-border: #ad6275;
    --ui-purple: #d1b9f2;
    --ui-purple-soft: #332945;
    --ui-purple-border: #846bad;
    --ui-glass: rgba(23,35,52,.96);
    --ui-overlay: rgba(23,35,52,.7);
  }
}
@media screen and (prefers-color-scheme: dark) {
  :root:not([data-theme]), :root:not([data-theme]) body {
    color-scheme: dark;
    --paper: #101827;
    --card: #172334;
    --card-bg: #172334;
    --ink: #e7edf6;
    --muted: #afbed1;
    --accent: #aacdfb;
    --accent-soft: #203754;
    --line: #34475f;
    --danger: #ffadba;
    --danger-soft: #422735;
    --muted-text: #afbed1;
    --ui-text: #e7edf6;
    --ui-muted: #afbed1;
    --ui-surface: #172334;
    --ui-surface-soft: #1c2b3f;
    --ui-border: #526985;
    --ui-accent-fill: #285589;
    --ui-danger-fill: #963247;
    --ui-ink-fill: #1c2f48;
    --surface: #172334;
    --surface-soft: #1c2b3f;
    --border: #34475f;
    --bg: #172334;
    --text: #e7edf6;
    --text-muted: #afbed1;
    --ui-brand-filter: brightness(2.3);
    --ui-select-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='10' viewBox='0 0 16 10' fill='none'%3E%3Cpath d='M2 2L8 8L14 2' stroke='%23AACDFB' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    --ui-info: #aacdfb;
    --ui-info-soft: #20334b;
    --ui-info-border: #537baa;
    --ui-success: #8ce0bb;
    --ui-success-soft: #193b32;
    --ui-success-border: #42876c;
    --ui-warning: #f6cf85;
    --ui-warning-soft: #3b3020;
    --ui-warning-border: #a58243;
    --ui-danger: #ffadba;
    --ui-danger-soft: #422735;
    --ui-danger-border: #ad6275;
    --ui-purple: #d1b9f2;
    --ui-purple-soft: #332945;
    --ui-purple-border: #846bad;
    --ui-glass: rgba(23,35,52,.96);
    --ui-overlay: rgba(23,35,52,.7);
  }
}

/* Native controls follow the page, including Safari's date/time picker. */
select { color-scheme: inherit; }
input, select, textarea { caret-color: var(--ink); }
input::placeholder, textarea::placeholder { color: var(--ui-muted, #707989); opacity: 1; }
input[type="checkbox"], input[type="radio"] { accent-color: var(--ui-info, var(--accent)); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
::selection { background: var(--accent-soft); color: var(--ink); }

/* A compact, keyboard-accessible preference menu for guests and all roles. */
.theme-menu[hidden] { display: none; }
.theme-menu > summary { gap: 8px; }
.theme-menu-icon { font-size: 20px; line-height: 1; }
.theme-options { width: 218px; }
.theme-options button {
  display: flex; width: 100%; min-height: 44px; align-items: center;
  justify-content: space-between; padding: 10px 12px;
  border: 1px solid transparent; border-radius: 8px; background: transparent;
  color: var(--ink); font: inherit; text-align: left; cursor: pointer;
}
.theme-options button:hover { background: var(--accent-soft); }
.theme-options button[aria-pressed="true"] { background: var(--accent-soft); color: var(--accent); font-weight: 700; }
.theme-options button[aria-pressed="true"]::after { content: "✓"; }
.theme-options button:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }

/* Formulas use currentColor. Scientific images keep their original palette on
   white paper; never apply a blanket filter to images, canvases or MathJax. */
.problem-image, .problem-related-image img, .problem-image-option img,
.problem-content img, .problem-detail figure img, .problem-image-current img,
.problem-image-preview img, .catalog-problem-image img, .problem-preview-image img {
  background-color: #fff;
}
.vector-editor-page {
  --editor-ink: var(--ui-text, #202b3c);
  --editor-navy: var(--ui-info, #183b63);
  --editor-blue: var(--ui-info, #2c6e91);
  --editor-pale: var(--ui-info-soft, #edf3f9);
}
.vector-save-button { background: var(--ui-accent-fill, #183b63); }
.vector-stage, .vector-canvas, .vector-library-grid svg {
  color-scheme: light;
  background: #fff;
  --editor-ink: #202b3c; --editor-navy: #183b63;
  --editor-blue: #2c6e91; --editor-pale: #edf3f9;
}
.brand-letter { filter: var(--ui-brand-filter, none); }
@media (max-width: 1100px) {
  .theme-options { width: 100%; }
}
@media print {
  :root { color-scheme: light; }
  .theme-menu { display: none; }
}

/* css/workspace.css */
/* Shared workspace patterns. Keep exam, drawing and video controls independent. */
.skip-link { position: fixed; top: 8px; left: 12px; z-index: 10000; padding: 12px 18px; border-radius: 8px; background: var(--ui-surface, #fff); color: var(--accent); transform: translateY(-160%); box-shadow: 0 2px 12px #0003; }
.skip-link:focus { transform: none; }
#main-content { scroll-margin-top: 90px; }
#main-content:focus { outline: none; }
:where(h1, h2, h3, [id], input, textarea, select, summary) { scroll-margin-top: 90px; }
/* Match main's centred 1200px container and 24px content inset (site.css).
   Keep the background full-width and the existing mobile scroll container. */
.workspace-shortcuts { display: flex; flex-wrap: wrap; justify-content: center; gap: 4px; padding: 8px max(24px, calc((100% - 1200px) / 2 + 24px)); border-bottom: 1px solid var(--line); background: var(--ui-surface, #fff); }
.workspace-shortcuts a { display: inline-flex; align-items: center; gap: 7px; min-height: 44px; padding: 10px 14px; border-radius: 8px; color: var(--muted); font-size: 14px; font-weight: 650; }
.workspace-shortcuts a:hover, .workspace-shortcuts .is-current { background: var(--accent-soft); color: var(--accent); }
.workspace-shortcuts .is-current { box-shadow: inset 0 -2px var(--accent); }
.workspace-count { padding: 1px 7px; border-radius: 20px; background: var(--ui-accent-fill, var(--accent)); color: #fff; font-size: 12px; }
.workspace-home { max-width: 1120px; margin: auto; }
.workspace-home-heading { max-width: 850px; margin-bottom: 28px; }
.workspace-home-heading h1 { margin: 8px 0 14px; font-size: clamp(30px, 3.4vw, 46px); line-height: 1.16; overflow-wrap: anywhere; }
.workspace-home-heading > p:last-child { color: var(--muted); }
.home-focus { margin: 0 0 30px; padding: 20px; border: 1px solid var(--line); border-radius: 16px; background: var(--ui-info-soft, #f4f7fb); }
.home-focus-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 14px; }
.home-focus-heading h2 { margin: 2px 0 0; font-size: clamp(23px, 2.5vw, 30px); }
.home-focus-heading p { margin: 0; }
.home-focus-heading > a { display: inline-flex; align-items: center; min-height: 44px; font-weight: 700; white-space: nowrap; }
.home-focus-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.home-focus-card { display: flex; min-width: 0; min-height: 188px; flex-direction: column; padding: 18px; border: 1px solid var(--line); border-top: 4px solid var(--ui-border-strong, #8594a8); border-radius: 12px; background: var(--ui-surface, #fff); }
.home-focus-card.is-primary { border-top-color: var(--accent); }
.home-focus-card.is-warning { border-top-color: var(--ui-warning, #8a6117); }
.home-focus-card.is-danger { border-top-color: var(--ui-danger, #963247); }
.home-focus-card .home-focus-kind { margin: 0 0 8px; color: var(--muted); font-size: 12px; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.home-focus-card h3 { margin: 0 0 8px; font-size: 20px; line-height: 1.25; overflow-wrap: anywhere; }
.home-focus-card > p:not(.home-focus-kind) { margin: 0 0 16px; color: var(--muted); font-size: 14px; line-height: 1.45; }
.home-focus-card > a { display: inline-flex; align-items: center; min-height: 44px; margin-top: auto; font-weight: 750; }
.home-focus-card > a span { margin-left: 5px; }
.workspace-home-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.workspace-home-card { display: flex; flex-direction: column; align-items: flex-start; min-width: 0; padding: 24px; border: 1px solid var(--line); border-radius: 14px; background: var(--ui-surface, #fff); color: var(--ink); transition: border-color .15s, box-shadow .15s; }
.workspace-home-card:hover { border-color: var(--accent); box-shadow: 0 5px 16px #142d5010; }
.workspace-home-card.is-primary { background: var(--accent-soft); border-color: var(--accent); }
.workspace-card-index { color: var(--accent); font-size: 12px; font-weight: 800; margin-bottom: 18px; }
.workspace-home-card h2 { margin: 0 0 9px; font-size: 24px; line-height: 1.2; }
.workspace-home-card h2 span { color: var(--accent); }
.workspace-home-card p { margin: 0; color: var(--muted); line-height: 1.5; }
.workspace-resources { margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--line); }
.workspace-resources h2 { margin: 0 0 10px; font-size: 21px; }
.workspace-resources > div { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.workspace-resources a { display: inline-flex; align-items: center; min-height: 44px; }
.workspace-tabs { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 22px; padding: 6px; border: 1px solid var(--line); border-radius: 12px; background: var(--ui-surface, #fff); }
.workspace-tabs a { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 14px; border-radius: 8px; color: var(--muted); font-size: 14px; font-weight: 700; }
.workspace-tabs a:hover, .workspace-tabs a[aria-current="page"] { background: var(--accent-soft); color: var(--accent); }
.workspace-tabs a[aria-current="page"] { box-shadow: inset 0 -2px var(--accent); }
.workspace-tabs a span { padding: 1px 6px; border: 1px solid var(--line); border-radius: 20px; font-size: 12px; }
.workspace-create { margin: 16px 0 24px; border: 1px solid var(--line); border-radius: 12px; background: var(--ui-surface, #fff); }
.workspace-create > summary { padding: 16px 20px; cursor: pointer; color: var(--accent); font-weight: 750; min-height: 48px; }
.workspace-create > summary small { margin-left: 12px; color: var(--muted); font-weight: 500; }
.workspace-create .test-workflow-grid { margin: 0; padding: 4px 16px 16px; }
.workspace-form-errors { padding: 16px; margin-bottom: 20px; border: 1px solid var(--ui-danger, #963247); border-radius: 10px; background: var(--ui-danger-soft, #fbf0f2); color: var(--ink); }
.workspace-form-errors h2 { margin: 0 0 8px; font-size: 18px; }
.workspace-form-errors ul { margin: 0; padding-left: 20px; }
.workspace-form-errors a { text-decoration: underline; text-underline-offset: 3px; }
.workspace-form-errors li + li { margin-top: 6px; }
/* Disclosures stay open without JS; only enhanced mobile pages collapse them. */
.workspace-disclosure { min-width: 0; }
.workspace-disclosure > summary { min-height: 44px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 9px; background: var(--ui-surface, #fff); color: var(--accent); cursor: pointer; font-size: 14px; font-weight: 650; }
.workspace-disclosure[open] > summary { margin-bottom: 12px; }
.workspace-disclosure > summary small { margin-left: 8px; color: var(--muted); font-size: 12px; font-weight: 500; }
.workspace-scroll-region:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.workspace-scroll-region { scrollbar-color: var(--ui-border, #bcc5d3) transparent; }
:is(.auth-footer, .helptext, .form-note, .field-help) a { text-decoration: underline; text-underline-offset: 3px; }
:is(.hb-panel, .hb-outline, .page-library details, .tg-variables, .tg-history, .review-feedback-library, .sp-reveal) > summary { min-height: 44px; padding-block: 10px; cursor: pointer; }
:is(.hb-panel, .hb-outline) summary { min-height: 44px; padding-block: 10px; }
.generated-test-heading h1 { margin-top: 8px; font-size: clamp(28px, 3.2vw, 42px); line-height: 1.18; overflow-wrap: anywhere; }
.generated-test-title-row > div:first-child { min-width: 0; }
.analytics-heading h1 { font-size: clamp(30px, 3.5vw, 44px); line-height: 1.16; }
:is(.performance-groups small, .performance-result-cell > small, .performance-status, .performance-trend, .performance-checked, .performance-review-count, .performance-topic small, .analytics-teacher small) { font-size: 12px; }
.performance-table td::before { font-size: 11px; }
@media (min-width: 761px) { .workspace-disclosure-enhanced > summary { display: none; } }
.workspace-filter { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 12px; margin: 18px 0; }
.workspace-filter label { display: grid; flex: 1 1 230px; gap: 6px; font-weight: 650; }
.workspace-filter input { width: 100%; }
.workspace-filter a { padding: 12px 4px; }
.stl-group-title { flex-basis: 220px; }
.workspace-work-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.stl-group-title h2 { white-space: normal; overflow: visible; overflow-wrap: anywhere; line-height: 1.4; }
.stl-group > .teacher-muted { margin: 0; padding: 14px 22px; color: var(--muted); background: var(--ui-info-soft, #f3f6fa); }
.stl-session-link { display: inline-flex; align-items: center; min-height: 44px; }
.stl-session-score small { display: block; max-width: 220px; margin-top: 4px; color: var(--muted); font-size: 12px; }
.stl-teacher, .stl-date, .stl-score-pending { color: var(--muted); }
@media (max-width: 700px) {
  .workspace-shortcuts { flex-wrap: nowrap; justify-content: flex-start; overflow-x: auto; overscroll-behavior-x: contain; scroll-padding-inline: 12px; padding: 6px 12px; gap: 4px; scrollbar-width: thin; scrollbar-color: var(--line) transparent; }
  .workspace-shortcuts a { flex: 0 0 auto; justify-content: center; padding: 9px 12px; font-size: 13px; white-space: nowrap; }
  /* Auto margins centre a short row, but collapse when it overflows so the
     first link remains reachable (unlike justify-content: center). */
  .workspace-shortcuts a:first-child { margin-inline-start: auto; }
  .workspace-shortcuts a:last-child { margin-inline-end: auto; }
  .workspace-home-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .home-focus-grid { grid-template-columns: 1fr; }
  .home-focus-card { min-height: 0; }
  .workspace-home-card { padding: 18px; }
  .workspace-home-card h2 { font-size: 22px; }
  .workspace-create > summary small { display: block; margin: 6px 0 0; }
  .workspace-tabs a { flex: 1 1 auto; padding: 10px; }
  .stl-group-title { flex-basis: 100%; }
}
@media (max-width: 760px) {
  /* Follow main's mobile gutters, including landscape safe areas. */
  .workspace-shortcuts { padding-left: max(14px, env(safe-area-inset-left)); padding-right: max(14px, env(safe-area-inset-right)); }
  /* Keep the lesson list ahead of secondary statistics on a small screen. */
  .lesson-summary { margin-bottom: 14px; }
  .lesson-summary .lesson-dashboard { margin-bottom: 0; }
  .schedule-list-page .lesson-group-filter { grid-template-columns: minmax(0, 1fr) auto !important; gap: 8px; }
  .schedule-list-page .lesson-group-filter label { grid-column: 1 / -1; }
  .schedule-list-page .lesson-group-filter > .custom-select { width: 100%; min-width: 0; }
  .schedule-list-page .lesson-group-filter button { width: auto; min-height: 48px; padding-inline: 14px; }
  .schedule-list-page .lesson-toolbar { gap: 12px; }
  .schedule-list-page .lessons-heading h1 { font-size: 30px; }
  .schedule-list-page .lessons-heading { margin-bottom: 20px; }
  .schedule-list-page > .schedule-view-switch { margin-bottom: 14px; }
  .lesson-status { max-width: 100%; font-size: 11px; line-height: 1.4; letter-spacing: 0; text-transform: none; white-space: normal; text-align: center; }
  .schedule-legend, .schedule-calendar-help, .schedule-filter-panel summary small { font-size: 12px; }
  .schedule-day-count { font-size: 11px; }
  .generated-test-heading h1 { font-size: 28px; }
  .generated-test-title-row .test-toolbar { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-items: stretch; width: 100%; }
  .generated-test-title-row .test-toolbar > .primary-link { grid-column: 1 / -1; }
  .generated-test-title-row .test-toolbar > a { display: flex; min-width: 0; min-height: 44px; }
  .generated-test-title-row .test-more-menu[open] { grid-column: 1 / -1; }
}
@media (max-width: 430px) {
  .home-focus { margin-inline: -4px; padding: 16px; }
  .home-focus-heading { align-items: flex-start; }
  .home-focus-heading > a { font-size: 13px; white-space: normal; text-align: right; }
  .workspace-home-grid { grid-template-columns: 1fr; }
  .workspace-home-card { padding: 18px 20px; }
  .workspace-card-index { margin-bottom: 8px; }
}
@media (max-width: 390px) {
  .workspace-shortcuts { padding-left: max(11px, env(safe-area-inset-left)); padding-right: max(11px, env(safe-area-inset-right)); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}
@media print { .skip-link, .workspace-shortcuts { display: none; } }

/* «Работа принята»: a clear success state and the next step, not a warning. */
.submission-received { max-width: 720px; margin: 0 auto; padding: clamp(22px, 4vw, 36px); border: 1px solid var(--line); border-radius: 14px; background: var(--ui-surface, #fff); }
.submission-received h1 { display: flex; align-items: center; gap: 12px; margin: 6px 0 12px; font-size: clamp(30px, 4.5vw, 42px); }
.submission-received-icon { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; flex: 0 0 44px; border-radius: 50%; background: var(--ui-success-soft, #e3f4ea); color: var(--ui-success, #1d7a4b); }
.submission-received-title { margin: 0 0 6px; font-weight: 700; overflow-wrap: anywhere; }
.submission-next { margin: 20px 0; padding: 16px 18px; border-radius: 10px; background: var(--ui-info-soft, #f1f5fa); }
.submission-next h2 { margin: 0 0 6px; font-size: 17px; }
.submission-next p { margin: 6px 0 0; line-height: 1.5; }
.submission-attempts { color: var(--muted); font-size: 14px; }
.submission-actions { display: flex; flex-wrap: wrap; gap: 10px; }

/* An empty test cannot be assigned or attached; say so on its card. */
.test-card-meta .test-card-warning { background: var(--ui-warning-soft, #fff4dc); color: var(--ui-warning, #8a5a00); font-weight: 650; }

/* Inactive difficulty stars use the divider tone: in the dark theme the muted
   text colour was almost as bright as an active star (1 looked like 5). */
.difficulty-star:not(.active) { color: var(--line, #c9cfda); }

.workspace-scroll-hint { margin: 0 0 6px; color: var(--ui-muted, #586579); font-size: 13px; }
.workspace-scroll-hint[hidden] { display: none; }
/* A running video lesson: the room is the primary action, materials second. */
.home-focus-card > a.home-focus-primary { align-self: flex-start; padding: 10px 16px; border-radius: 10px; background: var(--ui-accent-fill, var(--accent)); color: #fff; text-decoration: none; }
.home-focus-card > a.home-focus-secondary { margin-top: 6px; min-height: 40px; font-size: 14px; }
.home-focus-card > a.home-focus-primary + a.home-focus-secondary { margin-top: 6px; }
.home-focus-card > a.home-focus-primary { margin-top: auto; }
/* Scrollable shortcuts show which side has more links. */
.workspace-shortcuts.has-more-end { -webkit-mask-image: linear-gradient(to right, #000 calc(100% - 44px), transparent); mask-image: linear-gradient(to right, #000 calc(100% - 44px), transparent); }
.workspace-shortcuts.has-more-start { -webkit-mask-image: linear-gradient(to left, #000 calc(100% - 44px), transparent); mask-image: linear-gradient(to left, #000 calc(100% - 44px), transparent); }
.workspace-shortcuts.has-more-start.has-more-end { -webkit-mask-image: linear-gradient(to right, transparent, #000 44px, #000 calc(100% - 44px), transparent); mask-image: linear-gradient(to right, transparent, #000 44px, #000 calc(100% - 44px), transparent); }

/* css/page-layouts.css */
.layout-title-row { display:flex; align-items:center; justify-content:var(--layout-align,flex-start); gap:12px; min-width:0; max-width:100%; margin:4px 0 12px; }
.layout-title-row > h1 { flex:0 1 auto; min-width:0; margin:0 !important; overflow-wrap:anywhere; }
.layout-title-row > .layout-entry { position:static; flex:0 0 auto; display:inline-flex; gap:7px; min-width:44px; min-height:44px; box-sizing:border-box; align-items:center; justify-content:center; margin:0; padding:9px 12px; font:600 13px/1.3 var(--font-body,system-ui,sans-serif); white-space:nowrap; background:var(--card,#fff); color:var(--accent); border:1px solid var(--line,#d8dfeb); border-radius:10px; text-decoration:none; }
.layout-entry svg { flex:none; width:18px; height:18px; }
.layout-entry:hover { background:var(--accent-soft,#e4ebf5); border-color:var(--accent); }
.layout-entry:focus-visible { outline:3px solid var(--accent); outline-offset:2px; }
@media (max-width:1100px) {
  .layout-title-row { gap:8px; }
  .layout-title-row > .layout-entry { width:44px; padding:10px; }
  .layout-entry-label { display:none; }
}
@media print { .layout-entry { display:none !important; } }
.layout-render-block,[data-layout-block] { box-sizing:border-box; min-width:0; max-width:100%; }
[data-layout-text-run] { font-size:calc(1em * var(--layout-font-scale,1)) !important; }
[data-layout-align] { display:flex !important; flex-direction:column !important; align-items:var(--layout-align) !important; }
[data-layout-align] > * { flex:0 1 auto !important; max-width:100%; }
[data-layout-align] :is(.teacher-actions,.lesson-detail-actions,.draft-heading-actions,.test-card-actions) { justify-content:var(--layout-align) !important; }
.layout-render-block[data-layout-surface="card"] { background:var(--card,#fff) !important; color:var(--ink,#182238) !important; border:1px solid var(--line,#d8dfeb); }
.layout-render-block[data-layout-surface="soft"] { background:var(--accent-soft,#e4ebf5) !important; color:var(--ink,#182238) !important; border:1px solid var(--line,#d8dfeb); }
.layout-render-block[data-layout-flow="row"] { display:flex !important; flex-direction:row !important; flex-wrap:wrap !important; align-items:stretch !important; }
.layout-render-block[data-layout-flow="column"] { display:flex !important; flex-direction:column !important; align-items:stretch !important; }
[data-layout-page] { --layout-tone:var(--accent,#244a7c); }
[data-layout-palette="blue"] { --layout-tone:#244a7c; }
[data-layout-palette="teal"] { --layout-tone:#206459; }
[data-layout-palette="plum"] { --layout-tone:#6b3f77; }
:root[data-theme="dark"] [data-layout-palette="blue"] { --layout-tone:#a8c9f5; }
:root[data-theme="dark"] [data-layout-palette="teal"] { --layout-tone:#9ad7c9; }
:root[data-theme="dark"] [data-layout-palette="plum"] { --layout-tone:#dcc0eb; }
[data-layout-page]:not([data-layout-palette="site"]) :is(h1,h2) { color:var(--layout-tone); }
.layout-notice { white-space:pre-wrap; overflow-wrap:anywhere; border:1px solid var(--line,#d8dfeb); border-inline-start:4px solid var(--layout-tone); border-radius:10px; padding:16px; margin:0 0 20px; color:var(--text,#182238); background:var(--surface,#fff); font-size:16px; }
.layout-notice[hidden] { display:none; }
/* Reusable action row: status has its own reserved line, not a shifted select. */
.draft-item-controls { display:flex; flex-wrap:wrap; align-items:start; }
.draft-item-controls [data-response-mode-form] { display:grid; gap:4px; position:relative; flex:1 1 240px; }
.draft-item-controls [data-layout-format-label], .draft-replace > label > span { display:block; min-height:20px; font-size:13px; font-weight:700; }
.draft-item-controls .draft-replace { display:flex; flex-wrap:wrap; flex:1 1 250px; align-items:end; }
.draft-replace > label { min-width:0; flex:1 1 140px; }
.draft-item-controls .draft-replace > button { flex:0 0 auto; max-width:100%; }
.draft-item-controls [data-layout-remove] { padding-top:24px; flex:0 1 130px; }
.draft-item-controls :is(input,select,button) { min-height:44px; }
.draft-item-controls [data-layout-remove] button { width:100%; }
.draft-item-controls .draft-response-save { min-height:20px; }
@media (max-width:900px) {
  .draft-item-controls { flex-direction:column; align-items:stretch; }
  .draft-item-controls :is([data-response-mode-form],.draft-replace,[data-layout-remove]) { flex:0 0 auto; }
  .draft-item-controls [data-layout-remove] { padding-top:0; }
}

/* css/page-headings.css */
/* Shared page headings. Only explicitly registered templates opt in.
   The existing DOM, form boundaries and teacher layout selectors stay intact. */
:root .page-heading:not([data-layout-align]) {
  display: grid;
  grid-template-columns: minmax(0, 1fr) fit-content(48%);
  align-items: center;
  gap: 0 24px;
}
:root .page-heading > .page-heading-copy { display: contents; }
:root .page-heading > .page-heading-copy > :is(.eyebrow, .tg-eyebrow, .review-back) {
  grid-area: 1 / 1 / 2 / -1;
  margin: 0 0 8px;
}
:root .page-heading > .page-heading-copy > :is(h1, .layout-title-row) {
  grid-area: 2 / 1;
  min-width: 0;
  margin: 0;
}
:root .page-heading > .page-heading-copy h1 { overflow-wrap: anywhere; }
:root .page-heading > .page-heading-copy > p:not(.eyebrow):not(.tg-eyebrow) {
  grid-area: 3 / 1 / 4 / -1;
  min-width: 0;
  max-width: 72ch;
  margin: 12px 0 0;
}
:root .page-heading > .page-heading-copy > :not(p, h1, .layout-title-row, .review-back) { grid-column: 1 / -1; }
:root .page-heading > :is(.page-heading-actions, .page-heading-action, .page-heading-side) {
  grid-area: 2 / 2;
  align-self: center;
  justify-self: end;
  min-width: 0;
  max-width: 100%;
  margin: 0;
}
:root .page-heading > .page-heading-actions {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: stretch;
  justify-content: flex-end;
  gap: 8px;
  padding: 0;
}
:root .page-heading > .page-heading-tools { grid-column: 1 / -1; grid-row: 4; margin: 20px 0 0; }
:root .page-heading .page-heading-actions > form { display: flex; margin: 0; }
:root .page-heading :is(.page-heading-action, .page-heading-actions > a, .page-heading-actions > button, .page-heading-actions > form > button) {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  min-width: 0;
  min-height: 44px;
  max-width: 100%;
  padding: 10px 16px;
  font-size: 14px;
  line-height: 1.3;
  white-space: normal;
  overflow-wrap: anywhere;
  text-align: center;
}
:root .page-heading .page-heading-actions > :is(a, button),
:root .page-heading .page-heading-actions > form > button { margin: 0; }
:root .page-heading:not(:has(> .page-heading-actions, > .page-heading-action, > .page-heading-side)) { grid-template-columns: minmax(0, 1fr); }
:root .page-heading-copy > .group-role-badge { justify-self: start; margin-top: 12px; }
/* Saved heading alignment remains authoritative, including in no-JS previews. */
:root .page-heading[data-layout-align] > .page-heading-copy { display: block; }
:root .page-heading[data-layout-align] .page-heading-actions { justify-content: var(--layout-align); }
@media (max-width: 900px) {
  :root .page-heading:not([data-layout-align]) { grid-template-columns: minmax(0, 1fr); row-gap: 0; }
  :root .page-heading > :is(.page-heading-actions, .page-heading-action, .page-heading-side) {
    grid-area: 5 / 1;
    justify-self: stretch;
    margin-top: 16px;
  }
  :root .page-heading > .page-heading-actions { justify-content: flex-start; width: 100%; }
  :root .page-heading .page-heading-actions > :is(a, button, form) { flex: 1 1 auto; }
  :root .page-heading .page-heading-actions > form > button { width: 100%; }
}
@media (max-width: 480px) {
  :root .page-heading .page-heading-actions > :is(a, button, form) { flex-basis: 100%; }
  /* Short schedule actions fit together; long custom labels may still wrap. */
  :root .lessons-heading .lesson-heading-actions > a { flex-basis: auto; }
}
/* Standard form footers align text links and submit buttons on the same row. */
:is(.form-actions, .confirm-actions, .library-form-actions, .page-editor-actions) > :is(a, button) {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  min-height: 44px;
  max-width: 100%;
  text-align: center;
}

/* css/context-help.css */
/* Native details remain usable when JavaScript is unavailable. */
.context-help { display: inline-block; position: relative; vertical-align: middle; margin: 0; font: 400 14px/1.5 system-ui,sans-serif; color: var(--ink); }
:root .context-help { border: 0; padding: 0; }
:root .context-help > summary { position: relative; display: inline-grid; place-items: center; width: 44px; min-width: 44px; height: 44px; min-height: 44px; margin: 0; padding: 0; border: 0; border-radius: 50%; list-style: none; cursor: help; color: var(--muted); background: transparent; line-height: 1; }
.context-help > summary::-webkit-details-marker { display: none; }
:root .context-help > summary::before, :root .context-help > summary::after { content: none; }
.context-help-icon { display: block; width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; pointer-events: none; }
.context-help-dot { fill: currentColor; stroke: none; }
:root .context-help > summary:hover, :root .context-help[open] > summary { color: var(--accent); background: var(--accent-soft); }
.context-help > summary:focus-visible { outline: 2px solid var(--accent); outline-offset: -3px; }
.context-help-content { box-sizing: border-box; width: min(340px, calc(100vw - 24px)); max-height: min(420px, 65dvh); overflow: auto; overflow-wrap: anywhere; padding: 14px 16px; border: 1px solid var(--line); border-radius: 10px; background: var(--ui-surface, #fff); color: var(--ink); box-shadow: 0 8px 28px #0002; font: 400 14px/1.5 system-ui,sans-serif; text-align: left; letter-spacing: normal; text-transform: none; white-space: normal; }
.context-help > .context-help-content { position: fixed; z-index: 80; inset: 25vh auto auto 50%; transform: translateX(-50%); }
.context-help-content[data-help-floating] { position: fixed; z-index: 10000; margin: 0; inset: auto; }
.context-help-content[hidden] { display: none !important; }
.context-help-content > :first-child { margin-top: 0; }
.context-help-content > :last-child { margin-bottom: 0; }
.context-help-content p, .context-help-content small { font: inherit; color: inherit; white-space: normal; }
.context-help-content a { text-decoration: underline; }
.context-help-field-label { display: flex; align-items: center; gap: 2px; flex-wrap: wrap; }
.context-help-field-label > label { margin-bottom: 0; }
.catalog-subject-form > label { display: flex; align-items: center; min-height: 44px; }
.demo-card-title { display: flex; align-items: start; gap: 4px; }
.demo-card-title > h3 { flex: 1; }
.demo-card-title > .context-help { flex: 0 0 44px; }
.catalog-extra-meta { margin: 12px 0; color: var(--muted); font-size: 13px; }
.catalog-extra-meta > summary { font-weight: 500; }
.catalog-extra-meta .catalog-card-meta { margin-top: 8px; }
.catalog-problem-heading .catalog-problem-topics:empty { display: none; }
:is(.page-heading-copy, .tests-heading, .groups-heading, .library-heading, .teacher-head, .test-generator-heading, .hero) p:empty { display: none; }
:root .eyebrow:empty, :root p.test-intro:empty { display: none; }
@media print { .context-help, .context-help-content[data-help-floating] { display: none !important; } }