/* ==========================================================================
   Unified Design System CSS
   Rebuild goal:
   - one coherent token-driven system
   - no layered color wars
   - no semantic collapse of buttons/cards/nav
   - preserve as many existing class names as possible for migration
   - theme + portal variants override TOKENS, not whole components
   ========================================================================== */

/* --------------------------------------------------------------------------
   0. Architecture
   --------------------------------------------------------------------------
   1) Foundation tokens
   2) Theme tokens (light / dark / high-contrast)
   3) Portal tokens (adult/student/public/app)
   4) Primitives (buttons, pills, cards, inputs, tables)
   5) Layout (shells, topbars, sidebars, grids)
   6) Feature modules (public, auth, runner, student)
   7) Responsive rules
   -------------------------------------------------------------------------- */

/* ==========================================================================
   1. FOUNDATION TOKENS
   ========================================================================== */

:root {
  color-scheme: light;

  /* layout */
  --site-max: 1400px;
  --site-gutter: 24px;
  --site-width: min(var(--site-max), calc(100vw - var(--site-gutter) * 2));
  --header-height: 72px;
  --sidebar-width: 280px;
  --sidebar-width-collapsed: 88px;
  --student-nav-width: clamp(196px, 18vw, 224px);

  /* spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 32px;
  --space-8: 40px;

  /* radius */
  --radius-1: 10px;
  --radius-2: 14px;
  --radius-3: 18px;
  --radius-4: 24px;
  --radius-5: 32px;
  --radius-pill: 999px;

  /* typography */
  --font-root: 16px;
  --font-family-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  --font-family-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --line-height-body: 1.5;
  --mp-text-bump: 1;

  /* brand palette */
  --brand-900: #1b2a44;
  --brand-800: #24365b;
  --brand-700: #3f5ea3;
  --brand-600: #5d7ff4;
  --brand-500: #7fa3ff;
  --brand-200: #dbe5ff;
  --brand-100: #eef3ff;

  /* student palette */
  --student-700: #4e64a8;
  --student-600: #6178d4;
  --student-500: #7b95ff;
  --student-400: #a7b8ff;
  --student-300: #ccd6ff;
  --student-200: #d9e2ff;
  --student-100: #eff3ff;

  /* status palette */
  --success-700: #256848;
  --success-100: #edf7f1;
  --warning-700: #946319;
  --warning-100: #fff6e7;
  --danger-700: #b43e34;
  --danger-100: #fff1f0;

  /* semantic surfaces */
  --bg-canvas: #f4efe5;
  --bg-canvas-soft: #fbf8f2;
  --bg-panel: #fffdf9;
  --bg-panel-2: #f7f1e8;
  --bg-panel-3: #ece2d3;
  --bg-elevated: rgba(255, 253, 249, 0.96);
  --bg-interactive: linear-gradient(180deg, #fffdf9, #f7f1e8);
  --bg-hover: color-mix(in srgb, var(--brand-100) 40%, var(--bg-panel) 60%);
  --bg-active: color-mix(in srgb, var(--brand-100) 58%, var(--bg-panel-2) 42%);
  --bg-selected: linear-gradient(135deg, rgba(232, 237, 255, 0.96), rgba(248, 243, 234, 0.98));
  --bg-highlight: color-mix(in srgb, var(--brand-100) 54%, var(--bg-panel) 46%);
  --bg-accent-soft: color-mix(in srgb, var(--brand-100) 54%, var(--bg-panel) 46%);

  /* semantic text */
  --text-strong: #223047;
  --text-body: #48566d;
  --text-soft: #5f6d84;
  --text-inverse: #f8f9ff;
  --text-disabled: #8f98ac;

  /* semantic borders */
  --line-subtle: rgba(55, 66, 99, 0.12);
  --line-default: rgba(55, 66, 99, 0.20);
  --line-strong: rgba(55, 66, 99, 0.34);
  --selected-border: rgba(93, 127, 244, 0.34);

  /* semantic states */
  --focus-ring: rgba(93, 127, 244, 0.22);

  /* shadows */
  --shadow-sm: 0 8px 18px rgba(15, 18, 34, 0.05);
  --shadow-md: 0 16px 34px rgba(15, 18, 34, 0.10);
  --shadow-lg: 0 28px 66px rgba(15, 18, 34, 0.16);
  --surface-shadow-ui: var(--shadow-sm);

  /* component sizing */
  --card-padding: 20px;
  --control-height: 46px;
  --control-height-sm: 40px;
  --row-padding-y: 12px;
  --row-padding-x: 16px;
  --tile-min-height: 80px;

  /* legacy aliases for existing markup */
  --text: var(--text-strong);
  --muted: var(--text-body);
  --ink: var(--text-strong);
  --line: var(--line-default);
  --panel: var(--bg-elevated);
  --panel-strong: var(--bg-panel);
  --bg-page: var(--bg-canvas);
  --bg-soft: var(--bg-canvas-soft);
  --text-on-brand: var(--text-inverse);
  --text-on-light-strong: var(--text-strong);
  --text-on-light-muted: var(--text-body);
  --text-on-light-soft: var(--text-soft);
  --text-on-light-muted-strong: color-mix(in srgb, var(--text-body) 90%, var(--text-strong) 10%);
  --text-on-light-soft-strong: color-mix(in srgb, var(--text-soft) 82%, var(--text-strong) 18%);
  --text-on-dark-strong: var(--text-inverse);
  --text-on-dark-muted: color-mix(in srgb, var(--text-inverse) 86%, var(--brand-100) 14%);
  --text-on-dark-soft: color-mix(in srgb, var(--text-inverse) 72%, var(--brand-100) 28%);
}

/* ==========================================================================
   2. THEMES
   ========================================================================== */

html[data-appearance="dark"] {
  color-scheme: dark;

  --bg-canvas: #111827;
  --bg-canvas-soft: #182033;
  --bg-panel: #202744;
  --bg-panel-2: #253055;
  --bg-panel-3: #303a60;
  --bg-elevated: rgba(32, 39, 68, 0.96);
  --bg-interactive: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 96%, white 4%), color-mix(in srgb, var(--bg-panel-2) 94%, black 6%));
  --bg-hover: color-mix(in srgb, var(--brand-100) 28%, var(--bg-panel) 72%);
  --bg-active: color-mix(in srgb, var(--brand-100) 38%, var(--bg-panel-2) 62%);
  --bg-selected: linear-gradient(135deg, rgba(65, 81, 135, 0.92), rgba(42, 54, 90, 0.96));
  --bg-highlight: color-mix(in srgb, var(--brand-100) 24%, var(--bg-panel) 76%);
  --bg-accent-soft: color-mix(in srgb, var(--brand-100) 24%, var(--bg-panel) 76%);

  --text-strong: #f4f6ff;
  --text-body: #c6cee8;
  --text-soft: #a7b1cf;
  --text-inverse: #f8fbff;
  --text-disabled: #7f8aac;

  --line-subtle: rgba(188, 198, 230, 0.12);
  --line-default: rgba(188, 198, 230, 0.20);
  --line-strong: rgba(188, 198, 230, 0.34);
  --selected-border: rgba(168, 184, 255, 0.36);

  --focus-ring: rgba(142, 164, 255, 0.22);

  --success-700: #8fe2b4;
  --success-100: #183127;
  --warning-700: #f0cf8d;
  --warning-100: #3d3020;
  --danger-700: #ffb0ae;
  --danger-100: #3e2021;

  --shadow-sm: 0 10px 22px rgba(0, 0, 0, 0.28);
  --shadow-md: 0 18px 40px rgba(0, 0, 0, 0.34);
  --shadow-lg: 0 28px 72px rgba(0, 0, 0, 0.46);
}

html[data-appearance="high-contrast"] {
  color-scheme: light;

  --brand-900: #111111;
  --brand-800: #111111;
  --brand-700: #111111;
  --brand-600: #111111;
  --brand-500: #111111;
  --brand-200: #f5f5ef;
  --brand-100: #f5f5ef;

  --bg-canvas: #ffffff;
  --bg-canvas-soft: #f6f6f1;
  --bg-panel: #ffffff;
  --bg-panel-2: #f6f6f1;
  --bg-panel-3: #efefe6;
  --bg-elevated: #ffffff;
  --bg-interactive: #ffffff;
  --bg-hover: #f5f5ef;
  --bg-active: #efefe6;
  --bg-selected: #f5f5ef;
  --bg-highlight: #f5f5ef;
  --bg-accent-soft: #f5f5ef;

  --text-strong: #111111;
  --text-body: #222222;
  --text-soft: #333333;
  --text-inverse: #ffffff;
  --text-disabled: #666666;

  --line-subtle: #222222;
  --line-default: #222222;
  --line-strong: #000000;
  --selected-border: #111111;

  --focus-ring: rgba(17, 17, 17, 0.22);

  --success-700: #0f5d24;
  --success-100: #eff8f0;
  --warning-700: #8a5f00;
  --warning-100: #fff8df;
  --danger-700: #a32020;
  --danger-100: #fff1ee;

  --shadow-sm: none;
  --shadow-md: none;
  --shadow-lg: none;
}

/* portal token overrides - limited to tokens only */
body.portal-adult {
  --site-max: 1520px;
  --bg-canvas: #f7f1e7;
  --bg-canvas-soft: #fcf6ec;
  --bg-panel: #fff9f0;
  --bg-panel-2: #fcf6ec;
  --bg-panel-3: #f0e6d6;
  --bg-elevated: rgba(255, 249, 240, 0.96);
  --text-strong: #22314b;
  --text-body: #616c86;
  --text-soft: #7a849b;
  --line-default: rgba(40, 55, 89, 0.16);
  --line-strong: rgba(40, 55, 89, 0.24);
}

html[data-appearance="dark"] body.portal-adult {
  --bg-canvas: #10213f;
  --bg-canvas-soft: #13284b;
  --bg-panel: #17305a;
  --bg-panel-2: #203d72;
  --bg-panel-3: #152b4d;
  --bg-elevated: rgba(23, 48, 90, 0.96);
  --text-strong: #f4f7ff;
  --text-body: rgba(232, 238, 255, 0.84);
  --text-soft: rgba(232, 238, 255, 0.72);
  --line-default: rgba(186, 199, 243, 0.16);
  --line-strong: rgba(186, 199, 243, 0.24);
}

html.appearance-large-text { --mp-text-bump: 1.08; }
html[data-font-level="0"] { --font-root: 16px; }
html[data-font-level="1"] { --font-root: 18px; }
html[data-font-level="2"] { --font-root: 20px; }
html[data-font-level="3"] { --font-root: 22px; }

/* ==========================================================================
   3. RESET + BASE
   ========================================================================== */

* { box-sizing: border-box; }

html,
body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  font-size: var(--font-root);
}

body {
  background:
    radial-gradient(circle at top right, color-mix(in srgb, var(--brand-500) 12%, transparent), transparent 20%),
    radial-gradient(circle at top left, color-mix(in srgb, var(--brand-700) 10%, transparent), transparent 24%),
    linear-gradient(180deg, color-mix(in srgb, var(--bg-canvas) 94%, white 6%), var(--bg-canvas));
  color: var(--text-strong);
  font: calc(16px * var(--mp-text-bump)) / var(--line-height-body) var(--font-family-sans);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255,255,255,.14), transparent 28%);
}

html[data-appearance="dark"] body::before {
  background: linear-gradient(180deg, rgba(255,255,255,.02), transparent 28%);
}

html[data-appearance="high-contrast"] body::before { background: none; }

#appRoot {
  position: relative;
  z-index: 1;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

button { cursor: pointer; }

img {
  display: block;
  max-width: 100%;
}

code,
.mono {
  font-family: var(--font-family-mono);
}

.hidden,
.is-hidden {
  display: none !important;
}

:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px var(--focus-ring);
}

html[data-appearance="high-contrast"] *:focus-visible {
  outline: 3px solid #000;
  outline-offset: 2px;
  box-shadow: none;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
}

.skip-link:focus-visible {
  left: 12px;
  top: 12px;
  z-index: 300;
  background: var(--bg-panel);
  border-radius: var(--radius-pill);
  padding: 10px 14px;
  box-shadow: var(--shadow-md);
}

.muted,
.small,
.field-help,
.card-subtitle,
.section-header p,
.page-header p,
.brand-copy span,
.utility-strip__inner,
.footer,
.footer a,
.clean-list,
.visual-answer-shell__helper,
.runner-helper,
.runner-prompt__context,
.runner-prompt__detail,
.app-breadcrumbs__item,
.app-breadcrumbs__sep {
  color: var(--text-body);
}

.small { font-size: .875rem; }

.eyebrow,
.sidebar-group__title,
.student-side-nav__title,
.homepage-card__eyebrow,
.homepage-section__eyebrow {
  font-size: .76rem;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-weight: 800;
  color: color-mix(in srgb, var(--brand-700) 72%, var(--text-strong) 28%);
}

/* ==========================================================================
   4. SHARED LAYOUT CONTAINERS
   ========================================================================== */

.page-shell,
.public-shell,
.student-shell,
.app-shell,
.app-topbar__inner,
.student-topbar__inner,
.public-header__inner,
.mp-topbar__inner,
.utility-strip__inner,
.footer__inner {
  width: var(--site-width);
  margin-inline: auto;
}

.page-shell,
.public-shell {
  padding-block: 18px 32px;
}

.student-shell {
  padding-block: 0 32px;
}

.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr);
  gap: var(--space-5);
  align-items: start;
  padding-block: 16px 32px;
}

.app-main,
.student-page-content,
.app-content {
  min-width: 0;
}

.app-main,
.student-page-content {
  display: grid;
  gap: var(--space-4);
  align-content: start;
}

.student-shell__body,
.student-shell__body--with-nav {
  width: var(--site-width);
  margin-inline: auto;
  display: grid;
  gap: var(--space-5);
  align-items: start;
}

.student-shell__body {
  grid-template-columns: minmax(0, 1fr);
}

.student-shell__body--with-nav {
  grid-template-columns: var(--student-nav-width) minmax(0, 1fr);
}

.student-page-content--runner {
  display: flex;
  min-width: 0;
  min-height: calc(100dvh - var(--header-height) - var(--space-4));
}

.student-page-content--runner .runner-shell {
  display: grid;
  grid-template-rows: auto 1fr;
  min-height: 100%;
  width: min(100%, 1120px);
  margin-inline: auto;
}

.student-page-content--runner .runner-shell-v2 {
  --runner-shell-max-width: 1260px;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  gap: 16px;
  min-width: 0;
  min-height: 100%;
  height: calc(100dvh - var(--header-height) - 28px);
  max-height: calc(100dvh - var(--header-height) - 28px);
  width: min(100%, var(--runner-shell-max-width));
  margin-inline: auto;
  padding: 14px 14px 18px;
  --runner-visual-max-h: clamp(180px, 34dvh, 420px);
  align-content: start;
  align-items: stretch;
  overflow: hidden;
}


.student-page-content--runner .runner-shell-v2[data-session-kind="competition"] {
  --runner-shell-max-width: 1280px;
  --runner-visual-max-h: clamp(180px, 32dvh, 380px);
  gap: 12px;
  min-height: 0;
  height: auto;
  max-height: none;
  padding: 8px 14px 16px;
  overflow: visible;
}

.runner-shell-v2[data-session-kind="competition"] .runner-stage-v2 {
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 14px;
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2 {
  gap: 12px;
  padding: 14px 14px 16px;
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--mode-compact-typed {
  min-height: clamp(220px, 24vh, 320px);
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--mode-selection-grid {
  min-height: clamp(320px, 34vh, 480px);
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2 .runner-prompt__main {
  max-width: 12ch;
  font-size: clamp(1.8rem, 2.6vw, 2.75rem);
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--choice .runner-prompt__main,
.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--shape-choice .runner-prompt__main {
  max-width: 18ch;
  font-size: clamp(1.8rem, 2.2vw, 2.5rem);
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2 .runner-answer-stack-v2 {
  width: min(100%, 700px);
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--choice .runner-answer-stack-v2,
.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--shape-choice .runner-answer-stack-v2 {
  width: min(100%, 760px);
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--choice .options-grid[data-option-grid],
.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--shape-choice .options-grid[data-option-grid] {
  grid-template-columns: repeat(var(--option-grid-cols, 2), minmax(132px, 1fr));
  gap: 14px;
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--choice .option-chip--tile,
.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--choice .option-chip--single,
.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--shape-choice .option-chip--tile,
.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--shape-choice .option-chip--single {
  min-height: 84px;
}

.runner-side-rail-v2[data-has-tools-card="false"] {
  grid-template-rows: auto;
}

.runner-actions-v2--competition {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  width: 100%;
  flex-wrap: wrap;
}

.runner-actions-v2__group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.runner-actions-v2__group--utility,
.runner-actions-v2__inline {
  display: grid;
  gap: 10px;
  width: 100%;
  align-items: stretch;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.runner-actions-v2__group--danger {
  margin-left: auto;
}

.runner-actions-v2--competition .btn[data-runner-fullscreen-toggle],
.runner-actions-v2--competition .btn[data-runner-pause],
.runner-actions-v2--competition .btn[data-runner-cancel] {
  min-height: 48px;
  width: 100%;
  min-width: 0;
  justify-content: center;
}

.runner-shell-v2[data-session-kind="competition"] .runner-rail-card-v2 {
  gap: 10px;
  padding: 10px;
}

.runner-header-v2 {
  position: relative;
  display: block;
}

.runner-status-v2 {
  display: grid;
  grid-template-columns: auto minmax(420px, 1fr) auto;
  align-items: center;
  gap: 16px;
  min-height: 86px;
  padding: 12px 18px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 98%, white 2%), color-mix(in srgb, var(--bg-panel-2) 94%, white 6%));
  border: 1px solid var(--line-default);
  border-radius: 28px;
  box-shadow: var(--surface-shadow-ui);
}

.runner-header-v2__left,
.runner-header-v2__right,
.runner-status-v2__left,
.runner-status-v2__right {
  display: flex;
  align-items: center;
}

.runner-header-v2__right,
.runner-status-v2__right {
  justify-content: flex-end;
}

.runner-header-v2__center,
.runner-status-v2__center {
  display: grid;
  gap: 8px;
  min-width: 0;
}

.runner-status-v2__progress-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-width: 0;
}

.runner-header-pill-v2 {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 54px;
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid var(--line-default);
  background: color-mix(in srgb, var(--bg-interactive) 96%, white 4%);
  color: var(--text-strong);
  font-size: 1rem;
  font-weight: 800;
  white-space: nowrap;
}

.runner-header-pill-v2--timer {
  min-width: 72px;
  font-variant-numeric: tabular-nums;
}

.runner-header-progress-v2 {
  width: 100%;
  min-width: 0;
}

.runner-header-caption-v2 {
  font-size: .84rem;
  color: var(--text-body);
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.runner-header-progress-value-v2 {
  color: var(--text-muted);
  font-size: .86rem;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
}

.runner-stage-v2 {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 20px;
  align-items: start;
  min-height: 0;
  max-height: 100%;
}

.runner-card-v2,
.runner-rail-card-v2 {
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 98%, white 2%), color-mix(in srgb, var(--bg-panel-2) 94%, white 6%));
  border: 1px solid var(--line-default);
  border-radius: var(--radius-4);
  box-shadow: var(--surface-shadow-ui);
  color: var(--text-strong);
}

.runner-stage-v2 > .runner-question-card-v2 {
  height: 100%;
}

.runner-question-card-v2 {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 16px;
  min-height: 0;
  max-height: var(--runner-question-card-max-h, 100%);
  padding: 16px 16px 18px;
  align-content: start;
  align-items: stretch;
  overflow: hidden;
}

.runner-question-card-v2.runner-question-panel--mode-compact-typed {
  grid-template-rows: auto auto auto;
  min-height: clamp(260px, 34vh, 420px);
}

.runner-question-card-v2.runner-question-panel--mode-selection-grid {
  grid-template-rows: auto auto auto;
  min-height: clamp(360px, 46vh, 620px);
}

.runner-question-card-v2.runner-question-panel--mode-diagram-fixed-frame {
  min-height: clamp(440px, 56vh, 700px);
}

.runner-question-card-v2.runner-question-panel--mode-diagram-interactive-grid {
  min-height: clamp(620px, 72vh, 860px);
}

.runner-question-head-v2 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.runner-question-meta-v2 {
  color: var(--student-700);
  font-weight: 800;
  font-size: .82rem;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.runner-question-body-v2 {
  display: grid;
  gap: 14px;
  align-content: start;
  justify-items: stretch;
  min-height: 0;
  min-width: 0;
  overflow: auto;
  overscroll-behavior: contain;
  padding-right: 4px;
}

.runner-question-card-v2.runner-question-panel--mode-compact-typed .runner-question-body-v2 {
  align-content: start;
  justify-items: start;
}

.runner-question-card-v2.runner-question-panel--mode-diagram-fixed-frame .runner-question-body-v2,
.runner-question-card-v2.runner-question-panel--mode-diagram-interactive-grid .runner-question-body-v2,
.runner-question-card-v2.runner-question-panel--choice .runner-question-body-v2,
.runner-question-card-v2.runner-question-panel--shape-choice .runner-question-body-v2 {
  align-content: start;
  justify-items: stretch;
}

.runner-question-stage-v2,
.runner-answer-stage-v2 {
  width: min(100%, var(--runner-content-stage-max, 980px));
  margin-inline: auto;
}

.runner-question-stage-v2 {
  display: grid;
  gap: 14px;
  align-content: start;
}

.runner-answer-stage-v2 {
  display: grid;
  gap: 12px;
}

.runner-question-card-v2.runner-question-panel--mode-compact-typed {
  --runner-content-stage-max: 760px;
}

.runner-question-card-v2.runner-question-panel--mode-selection-grid {
  --runner-content-stage-max: 980px;
}

.runner-question-card-v2.runner-question-panel--mode-diagram-fixed-frame {
  --runner-content-stage-max: 1080px;
}

.runner-question-card-v2.runner-question-panel--mode-diagram-interactive-grid {
  --runner-content-stage-max: 1120px;
}

.runner-question-card-v2.runner-question-panel--mode-diagram-fixed-frame {
  --runner-visual-max-h: clamp(180px, 30dvh, 340px);
}

.runner-question-card-v2.runner-question-panel--choice,
.runner-question-card-v2.runner-question-panel--shape-choice {
  --runner-visual-max-h: clamp(150px, 24dvh, 280px);
}

.runner-question-card-v2.runner-question-panel--mode-diagram-interactive-grid,
.runner-question-card-v2.runner-question-panel--coordinate-grid,
.runner-question-card-v2.runner-question-panel--transformation-grid {
  --runner-visual-max-h: clamp(220px, 34dvh, 380px);
}

.runner-question-card-v2 .runner-prompt {
  gap: 10px;
}

.runner-question-card-v2 .runner-prompt__intro {
  font-size: clamp(1rem, 1.2vw, 1.14rem);
}

.runner-question-card-v2 .runner-prompt__context {
  font-size: clamp(1rem, 1.25vw, 1.18rem);
}

.runner-question-card-v2 .runner-question-body-v2 {
  scroll-padding-top: 88px;
}

.runner-question-card-v2 .runner-question-stage-v2 > .runner-prompt {
  position: sticky;
  top: 0;
  z-index: 4;
  color: var(--text-strong);
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 96%, var(--bg-canvas-soft) 4%) 0%, color-mix(in srgb, var(--bg-panel) 96%, var(--bg-canvas-soft) 4%) 78%, rgba(248,246,239,0) 100%);
  padding-bottom: 8px;
}

html[data-appearance="dark"] .runner-question-card-v2 .runner-question-stage-v2 > .runner-prompt,
html[data-theme="dark"] .runner-question-card-v2 .runner-question-stage-v2 > .runner-prompt,
body.theme-dark .runner-question-card-v2 .runner-question-stage-v2 > .runner-prompt {
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 96%, black 4%) 0%, color-mix(in srgb, var(--bg-panel) 96%, black 4%) 78%, rgba(32,39,68,0) 100%);
}

.runner-question-card-v2 .runner-prompt__main {
  max-width: 22ch;
  margin-inline: 0;
  font-size: clamp(2rem, 3vw, 3.25rem);
  line-height: 1.05;
}

.runner-question-card-v2.runner-question-panel--mode-diagram-fixed-frame .runner-prompt__main,
.runner-question-card-v2.runner-question-panel--mode-diagram-interactive-grid .runner-prompt__main,
.runner-question-card-v2.runner-question-panel--choice .runner-prompt__main,
.runner-question-card-v2.runner-question-panel--shape-choice .runner-prompt__main {
  max-width: 34ch;
  font-size: clamp(1.4rem, 2vw, 2.3rem);
  line-height: 1.12;
}

.runner-question-card-v2.runner-question-panel--mode-compact-typed .runner-prompt__main {
  max-width: 16ch;
}

.runner-visual-panel-v2 {
  display: grid;
  gap: 12px;
  width: 100%;
  min-width: 0;
  min-height: min-content;
  max-height: calc(var(--runner-visual-max-h, 420px) + 56px);
  align-content: start;
  justify-items: center;
  overflow: auto;
}

.runner-question-card-v2.runner-question-panel--mode-diagram-fixed-frame .runner-visual-panel-v2,
.runner-question-card-v2.runner-question-panel--mode-diagram-interactive-grid .runner-visual-panel-v2 {
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-interactive) 90%, white 10%), color-mix(in srgb, var(--bg-panel) 96%, white 4%));
  border: 1px solid var(--line-default);
  border-radius: 22px;
  padding: 14px 16px;
}

.runner-question-card-v2.runner-question-panel--mode-diagram-interactive-grid .runner-visual-panel-v2 {
  gap: 10px;
}

.runner-question-card-v2.runner-question-panel--mode-selection-grid .runner-visual-panel-v2,
.runner-question-card-v2.runner-question-panel--fraction-model .runner-visual-panel-v2,
.runner-question-card-v2.runner-question-panel--table .runner-visual-panel-v2 {
  width: min(100%, 980px);
  margin-inline: auto;
}

.runner-visual-panel-v2 .visual-card,
.runner-question-card-v2 .question-image-wrap,
.runner-question-card-v2 .official-crop-wrap {
  width: min(100%, 1080px);
  max-width: 100%;
  margin-inline: auto;
}

.runner-question-card-v2.runner-question-panel--mode-diagram-interactive-grid .visual-card,
.runner-question-card-v2.runner-question-panel--mode-diagram-interactive-grid .question-image-wrap,
.runner-question-card-v2.runner-question-panel--mode-diagram-interactive-grid .official-crop-wrap {
  width: min(100%, 1180px);
}

.runner-answer-panel-v2 {
  display: grid;
  gap: 12px;
  align-content: start;
  min-width: 0;
  padding-top: 4px;
  border-top: 1px solid var(--line-subtle);
}

.runner-answer-stack-v2 {
  width: min(100%, 760px);
  margin-inline: auto;
}

.runner-question-card-v2.runner-question-panel--mode-diagram-fixed-frame .runner-answer-stack-v2,
.runner-question-card-v2.runner-question-panel--mode-diagram-interactive-grid .runner-answer-stack-v2,
.runner-question-card-v2.runner-question-panel--choice .runner-answer-stack-v2,
.runner-question-card-v2.runner-question-panel--shape-choice .runner-answer-stack-v2 {
  width: min(100%, 980px);
}

.runner-question-card-v2 .options-grid {
  justify-content: center;
}

.runner-question-card-v2.runner-question-panel--choice .options-grid[data-option-grid],
.runner-question-card-v2.runner-question-panel--shape-choice .options-grid[data-option-grid] {
  grid-template-columns: repeat(var(--option-grid-cols, 3), minmax(min(28vw, 160px), 1fr));
  grid-auto-rows: minmax(82px, auto);
}

.runner-question-card-v2.runner-question-panel--choice .option-chip--tile,
.runner-question-card-v2.runner-question-panel--choice .option-chip--single,
.runner-question-card-v2.runner-question-panel--shape-choice .option-chip--tile,
.runner-question-card-v2.runner-question-panel--shape-choice .option-chip--single {
  min-height: 78px;
  border-radius: 18px;
}

.runner-question-card-v2.runner-question-panel--choice .option-chip--tile > span,
.runner-question-card-v2.runner-question-panel--choice .option-chip--single > span,
.runner-question-card-v2.runner-question-panel--shape-choice .option-chip--tile > span,
.runner-question-card-v2.runner-question-panel--shape-choice .option-chip--single > span {
  padding: 12px 10px;
  font-size: clamp(1.05rem, 1.45vw, 1.4rem);
}

.runner-question-card-v2.runner-question-panel--mode-selection-grid .runner-answer-panel-v2 {
  padding-top: 8px;
}

.runner-question-card-v2.runner-question-panel--mode-selection-grid .runner-answer-stage-v2 {
  width: min(100%, 920px);
}

.runner-question-card-v2.runner-question-panel--mode-selection-grid .options-grid[data-option-grid],
.runner-question-card-v2.runner-question-panel--choice .options-grid[data-option-grid],
.runner-question-card-v2.runner-question-panel--shape-choice .options-grid[data-option-grid] {
  max-width: 100%;
  width: fit-content;
  margin-inline: auto;
}

.runner-side-rail-v2 {
  display: grid;
  grid-template-rows: auto auto;
  gap: 12px;
  align-content: start;
  align-self: start;
  min-height: 0;
  max-height: 100%;
  overflow: visible;
  position: sticky;
  top: 0;
}

.runner-rail-slot-v2 {
  min-height: 0;
}

.runner-rail-slot-v2--tools {
  display: grid;
  min-height: 0;
}

.runner-rail-slot-v2--actions {
  align-self: start;
}

.runner-rail-card-v2 {
  display: grid;
  gap: 12px;
  padding: 12px;
}

.runner-rail-card-v2--keyboard,
.runner-rail-card-v2--tools-placeholder {
  align-content: start;
  min-height: 0;
}

.runner-rail-card-v2--tools-placeholder {
  gap: 8px;
  padding: 10px 10px 12px;
}

.runner-rail-empty-v2 {
  gap: 8px;
}

.runner-rail-copy-v2 {
  font-size: .96rem;
  line-height: 1.45;
}

.runner-shell-v2[data-answer-mode="interactive"] .runner-rail-card-v2--tools-placeholder {
  gap: 10px;
}

.runner-rail-empty-v2 {
  display: grid;
  gap: 10px;
  align-content: start;
}

.runner-rail-pill-v2 {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-height: 30px;
  padding: 5px 11px;
  border-radius: 999px;
  border: 1px solid var(--line-default);
  background: color-mix(in srgb, var(--bg-interactive) 92%, white 8%);
  color: var(--text-body);
  font-size: .74rem;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.runner-rail-copy-v2 {
  margin: 0;
  color: var(--text-body);
  font-size: .94rem;
  line-height: 1.45;
  max-width: 24ch;
}

.runner-rail-title-v2 {
  color: var(--text-muted);
  font-size: .76rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.runner-actions-v2 {
  display: grid;
  gap: 10px;
}

.runner-actions-v2 .btn,
.runner-rail-card-v2--keyboard .btn {
  width: 100%;
  min-height: 46px;
}

.runner-actions-v2__inline .btn {
  width: 100%;
}

.runner-rail-card-v2--keyboard .runner-keyboard-wrap {
  display: grid;
  gap: 10px;
}

.runner-rail-card-v2--keyboard .runner-keyboard {
  display: grid;
  gap: 8px;
}

.runner-rail-card-v2--keyboard .runner-keyboard-row {
  display: grid;
  grid-template-columns: repeat(var(--runner-keyboard-cols, 3), minmax(0, 1fr));
  gap: 8px;
}

.runner-rail-card-v2--keyboard .runner-keyboard-row--actions {
  align-items: stretch;
}

.runner-rail-card-v2--keyboard .btn[data-runner-key="enter"] {
  min-height: 50px;
  font-size: 1.02rem;
}

body.runner-fullscreen-mode {
  overflow: hidden;
}

body.runner-fullscreen-mode .student-shell__body--with-nav {
  grid-template-columns: minmax(0, 1fr);
  width: 100vw;
  max-width: none;
  gap: 0;
  margin: 0;
}

body.runner-fullscreen-mode .student-page-content--runner {
  min-height: 100dvh;
}

body.runner-fullscreen-mode .runner-shell-v2 {
  position: fixed;
  inset: 0;
  z-index: 999;
  min-height: 100dvh;
  height: 100dvh;
  max-height: 100dvh;
  width: 100vw;
  max-width: none;
  margin: 0;
  padding: 18px 16px 22px;
  overflow: auto;
  background: linear-gradient(180deg, var(--bg-page) 0%, var(--bg-soft) 100%);
  --runner-visual-max-h: clamp(220px, 44dvh, 560px);
}

body.runner-fullscreen-mode .runner-shell-v2 > .runner-header-v2,
body.runner-fullscreen-mode .runner-shell-v2 > .runner-stage-v2 {
  width: min(100%, 1440px);
  max-width: min(100%, 1440px);
  margin-inline: auto;
}

body.runner-fullscreen-mode .runner-stage-v2 {
  grid-template-columns: minmax(0, 1fr) 236px;
  min-height: 0;
  align-items: start;
}

/* common grids */
.section,
.account-grid,
.data-list,
.answer-stack,
.runner-shell,
.runner-focus-shell,
.homepage-shell,
.homepage-section,
.recommendation-stack,
.auth-points,
.section-rail,
.drag-label-slots,
.runner-progress-head,
.visual-answer-shell,
.runner-visual-panel,
.fraction-model,
.drag-label-layout,
.runner-shell .runner-keyboard-wrap {
  display: grid;
  gap: var(--space-4);
}

.hero,
.layout-split,
.layout-split--balanced,
.dashboard-grid,
.auth-split,
.workspace-hero,
.homepage-hero,
.student-auth-split,
.staff-wire-grid,
.class-card__body,
.student-illustration-card,
.runner-layout,
.runner-layout--single {
  display: grid;
  gap: var(--space-5);
  align-items: start;
}

.hero,
.auth-split,
.workspace-hero,
.homepage-hero {
  grid-template-columns: minmax(0, 1fr) minmax(320px, .92fr);
  align-items: stretch;
}

.layout-split { grid-template-columns: 1.15fr .85fr; }
.layout-split--balanced { grid-template-columns: 1fr minmax(320px, .92fr); }
.dashboard-grid { grid-template-columns: 1.2fr .8fr; }
.staff-wire-grid { grid-template-columns: minmax(320px, .72fr) minmax(0, 1.08fr); }
.class-card__body { grid-template-columns: minmax(0, 1fr) minmax(320px, .92fr); }
.student-auth-split { grid-template-columns: minmax(0, 1fr) minmax(320px, .95fr); }
.student-illustration-card { grid-template-columns: minmax(0, 1fr) minmax(220px, .9fr); align-items: center; }
.runner-layout { grid-template-columns: minmax(0, 1.25fr) minmax(260px, .45fr); }
.runner-layout--single { grid-template-columns: 1fr; }

.preview-grid,
.card-grid,
.stats-grid,
.workspace-kpis,
.feature-grid,
.journey-grid,
.pricing-grid,
.steps-grid,
.trust-grid,
.metric-grid,
.compact-kpis,
.student-home-grid,
.student-stat-grid,
.student-quick-grid,
.people-top-grid,
.learning-plan-grid,
.recommendation-grid,
.assignment-target-grid,
.options-grid,
.multi-field-grid,
.runner-meta-grid,
.homepage-feature-grid,
.homepage-journey-grid,
.route-journey,
.class-ops-grid,
.filter-bar,
.filter-bar--wide,
.filter-bar--curriculum,
.appearance-options,
.school-overview-grid {
  display: grid;
  gap: var(--space-4);
  align-items: stretch;
}

.preview-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.stats-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.card-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.card-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card-grid.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.workspace-kpis,
.pricing-grid,
.steps-grid,
.metric-grid,
.compact-kpis { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.journey-grid,
.trust-grid,
.class-ops-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.student-home-grid,
.student-quick-grid,
.school-overview-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.student-stat-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.people-top-grid,
.learning-plan-grid { grid-template-columns: minmax(320px, .92fr) minmax(0, 1.08fr); }
.recommendation-grid { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.assignment-target-grid { grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); max-height: 260px; overflow: auto; padding-right: 2px; }
.multi-field-grid.two,
.options-grid--2,
.options-grid--cols-2,
.options-grid--inline-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.multi-field-grid.three,
.options-grid--3,
.options-grid--cols-3,
.options-grid--inline-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.options-grid--4,
.options-grid--cols-4,
.options-grid--inline-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.options-grid--cols-5,
.options-grid--inline-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.runner-meta-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.homepage-feature-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.homepage-journey-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.route-journey { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.filter-bar { grid-template-columns: repeat(4, minmax(0, 1fr)) auto; }
.filter-bar--wide,
.filter-bar--curriculum { grid-template-columns: repeat(5, minmax(160px, 1fr)); }
.appearance-options { grid-template-columns: repeat(2, minmax(0, 1fr)); }

/* explicit option grids */
.options-grid[data-option-grid="1x3"] { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.options-grid[data-option-grid="2x2"] { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.options-grid[data-option-grid="2x3"] { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.options-grid[data-option-grid="2x4"] { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.options-grid[data-option-grid="2x5"] { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.options-grid[data-option-grid="3x3"] { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.options-grid[data-option-grid="3x4"] { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.options-grid[data-option-grid="3x5"] { grid-template-columns: repeat(5, minmax(0, 1fr)); }

/* ==========================================================================
   5. SURFACES
   ========================================================================== */

.card,
.student-card,
.summary-card,
.sticky-summary-card,
.notice-card,
.list-card,
.kpi-card,
.metric-card,
.reward-card,
.recommendation-card,
.empty-state,
.data-item,
.table-wrap,
.inline-notice,
.sidebar-panel,
.auth-panel,
.auth-aside,
.hero-copy,
.hero-preview,
.workspace-hero,
.workspace-kpi,
.page-hero-card,
.public-band,
.assignment-target-panel,
.section-surface,
.section-surface--nested,
.plan-item-card,
.repair-plan-card,
.class-wire-card,
.student-auth-panel,
.student-auth-aside,
.runner-bar,
.runner-main,
.runner-answer-panel,
.runner-visual-panel,
.visual-card,
.student-side-nav,
.app-content,
.appearance-card,
.homepage-card,
.homepage-journey-card,
.feature-panel,
.journey-card,
.price-card,
.step-card,
.login-card,
.modal-card,
.toast,
.mobile-nav,
.utility-note,
.runner-side-card,
.runner-side-nav,
.runner-bar.runner-status-bar--wide,
.audit-warning-panel {
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 98%, white 2%), color-mix(in srgb, var(--bg-panel-2) 94%, white 6%));
  border: 1px solid var(--line-default);
  border-radius: var(--radius-4);
  box-shadow: var(--surface-shadow-ui);
  color: var(--text-strong);
}

.card,
.student-card,
.summary-card,
.sticky-summary-card,
.notice-card,
.list-card,
.kpi-card,
.metric-card,
.reward-card,
.recommendation-card,
.empty-state,
.data-item,
.inline-notice,
.auth-panel,
.auth-aside,
.hero-copy,
.hero-preview,
.workspace-hero,
.workspace-kpi,
.page-hero-card,
.public-band,
.assignment-target-panel,
.section-surface,
.section-surface--nested,
.plan-item-card,
.repair-plan-card,
.class-wire-card,
.student-auth-panel,
.student-auth-aside,
.runner-bar,
.runner-main,
.runner-answer-panel,
.runner-visual-panel,
.visual-card,
.appearance-card,
.homepage-card,
.homepage-journey-card,
.feature-panel,
.journey-card,
.price-card,
.step-card,
.login-card,
.modal-card,
.toast,
.mobile-nav,
.utility-note,
.runner-side-card {
  padding: var(--card-padding);
}

.app-content {
  display: grid;
  gap: var(--space-4);
  padding: var(--space-5);
}

.app-content > .section,
.app-content > .card,
.app-content > .summary-card,
.app-content > .notice-card,
.workspace-hero__copy,
.workspace-hero__panel {
  min-width: 0;
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 98%, white 2%), color-mix(in srgb, var(--bg-panel-2) 94%, white 6%));
  border: 1px solid var(--line-default);
  border-radius: var(--radius-3);
  padding: var(--space-4);
  box-shadow: var(--surface-shadow-ui);
}

.sidebar-panel {
  background: transparent;
  border-color: transparent;
  box-shadow: none;
  padding: 0;
}

.workspace-hero {
  gap: var(--space-6);
  padding: var(--space-6);
}

.workspace-hero__panel {
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 88%, white 12%), color-mix(in srgb, var(--brand-100) 28%, var(--bg-panel-2) 72%));
}

.section-standout,
.surface-accent {
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 96%, white 4%), color-mix(in srgb, var(--bg-panel-2) 88%, white 12%));
  border-radius: var(--radius-4);
  border: 1px solid var(--line-default);
  box-shadow: var(--shadow-md);
}

.section-standout { padding: 18px 16px 22px; }

.public-band--hero {
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 96%, white 4%), color-mix(in srgb, var(--brand-100) 24%, var(--bg-panel) 76%));
}
.public-band--surface { background: color-mix(in srgb, var(--bg-panel) 98%, white 2%); }
.public-band--surface-alt,
.inline-notice,
.section-surface--nested,
.assignment-target-panel,
.runner-answer-panel,
.visual-answer-shell__summary,
.utility-note {
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel-2) 96%, white 4%), color-mix(in srgb, var(--bg-panel-3) 84%, var(--bg-panel) 16%));
}
.public-band--soft { background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 92%, white 8%), color-mix(in srgb, var(--bg-canvas-soft) 96%, var(--bg-panel) 4%)); }
.public-band--plans { background: linear-gradient(180deg, color-mix(in srgb, var(--brand-100) 16%, var(--bg-panel) 84%), color-mix(in srgb, var(--bg-panel) 98%, white 2%)); }
.public-band--trust { background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 96%, white 4%), color-mix(in srgb, #e9f1dc 14%, var(--bg-panel) 86%)); }

.kpi-card,
.metric-card,
.workspace-kpi,
.hero-proof,
.appearance-card {
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 98%, white 2%), color-mix(in srgb, var(--bg-panel-2) 84%, white 16%));
}

html[data-appearance="high-contrast"] :is(.card, .student-card, .sidebar-panel, .auth-panel, .auth-aside, .workspace-hero, .student-side-nav) {
  border-width: 2px;
}

/* ==========================================================================
   6. TOPBARS / HEADER / FOOTER
   ========================================================================== */

.utility-strip,
.public-header,
.app-topbar,
.student-topbar {
  position: sticky;
  top: 0;
  z-index: 60;
  backdrop-filter: blur(14px) saturate(1.08);
  border-bottom: 1px solid var(--line-default);
}

.utility-strip,
.public-header,
.student-topbar {
  background: color-mix(in srgb, var(--bg-elevated) 92%, transparent);
}

.app-topbar {
  background: linear-gradient(180deg, color-mix(in srgb, var(--brand-700) 16%, var(--bg-panel) 84%), color-mix(in srgb, var(--brand-800) 8%, var(--bg-panel) 92%));
}

.utility-strip__inner {
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  font-size: .875rem;
}

.public-header__inner,
.app-topbar__inner,
.student-topbar__inner {
  min-height: var(--header-height);
  padding-block: 10px;
  display: grid;
  align-items: center;
  gap: var(--space-4);
}

.public-header__inner,
.student-topbar__inner {
  grid-template-columns: auto 1fr auto;
}

.app-topbar__inner {
  grid-template-columns: auto 1fr auto auto;
}

.brand,
.public-footer-brand,
.app-topbar__actions,
.student-topbar__actions,
.public-nav-right,
.utility-strip__links,
.preview-toolbar,
.mini-topbar,
.homepage-hero__actions,
.public-header__nav,
.public-header__controls,
.mp-topbar__controls,
.mp-tool-group,
.button-row,
.quick-action-row,
.pill-nav,
.pill-row,
.scope-switcher,
.tabs,
.tab-strip,
.runner-footer,
.runner-question-head,
.runner-answer-head,
.runner-action-bar,
.student-topbar__stats,
.runner-progress-head__meta,
.runner-status-bar__meta,
.runner-keyboard__extras,
.login-card .actions,
.class-wire-card__actions,
.button-row--equal,
.header-action-stack,
.app-page-bar,
.app-breadcrumbs,
.app-page-bar__meta,
.runner-status-bar__actions,
.runner-question-head,
.runner-answer-head,
.runner-shell .runner-action-bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.brand {
  min-width: 0;
}

.brand-badge {
  width: 44px;
  height: 44px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  font-weight: 800;
  letter-spacing: .04em;
  background: linear-gradient(135deg, var(--brand-800), var(--brand-700));
  color: var(--text-inverse);
  box-shadow: var(--shadow-sm);
}

.brand-copy strong {
  display: block;
  font-size: 1.05rem;
  color: var(--text-strong);
}

.topbar-brand-image,
.sidebar-brand-image,
.public-footer-brand img,
.mp-footer__logo {
  width: auto;
  height: 40px;
  object-fit: contain;
}

.footer {
  padding: 24px 0 0;
}

.footer__inner {
  padding: 20px 0 0;
  border-top: 1px solid var(--line-subtle);
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
}

.footer--public {
  background: var(--brand-900);
  color: rgba(255,255,255,0.94);
}

.footer--public .muted,
.footer--public a {
  color: rgba(255,255,255,0.84);
}

.footer-tag {
  display: inline-flex;
  margin-top: 8px;
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.12);
  color: inherit;
  font-size: 12px;
}

.footer-heading {
  margin: 6px 0 10px;
  font-weight: 700;
  color: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr .8fr .8fr;
  gap: var(--space-5);
}

.footer-links {
  display: grid;
  gap: var(--space-2);
  margin-top: 8px;
}

.footer-links a:hover { color: var(--brand-700); }

.mp-footer {
  padding: 20px 0 24px;
  border-top: 1px solid var(--line-subtle);
  margin-top: 8px;
}

.mp-footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-align: center;
  max-width: min(100%, 760px);
  margin: 0 auto;
}

.mp-footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  font-weight: 700;
}

.mp-footer__links a {
  color: var(--text-strong);
}

.mp-footer__legal {
  display: grid;
  gap: 6px;
  margin-top: 2px;
  font-size: .78rem;
  line-height: 1.45;
  color: var(--text-body);
  max-width: 64ch;
}

.mp-footer__legal p {
  margin: 0;
}

/* ==========================================================================
   7. SIDEBARS / NAV
   ========================================================================== */

.app-sidebar,
.student-side-nav {
  position: sticky;
  top: calc(var(--header-height) + 14px);
  align-self: start;
  display: grid;
  gap: var(--space-4);
  width: 100%;
  overflow: hidden;
  padding: var(--space-4);
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 96%, white 4%), color-mix(in srgb, var(--bg-panel-2) 90%, var(--bg-panel) 10%));
  border: 1px solid var(--line-default);
  border-radius: var(--radius-5);
  box-shadow: var(--shadow-md);
}

.sidebar-panel--brand { padding-bottom: var(--space-3); }

.sidebar-panel--nav .section-rail,
.student-side-nav__list,
.sidebar-group__items,
.sidebar-group,
.scope-switcher--sidebar,
.sidebar-footer-expanded,
.sidebar-footer-compact {
  display: grid;
  gap: var(--space-2);
}

.sidebar-group + .sidebar-group,
.sidebar-group--tree + .sidebar-group--tree {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--line-subtle);
}

.sidebar-group--tree {
  overflow: visible;
}

.sidebar-group__title,
.student-side-nav__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.sidebar-group__title {
  white-space: normal;
  line-height: 1.2;
  cursor: pointer;
  padding-right: 2px;
}

.sidebar-group__title::-webkit-details-marker,
.student-more-options > summary::-webkit-details-marker,
.signin-menu summary::-webkit-details-marker,
.mp-language-menu summary::-webkit-details-marker,
.mp-profile-trigger::-webkit-details-marker {
  display: none;
}

.sidebar-group__chevron {
  transition: transform .2s ease;
  opacity: .7;
}

.sidebar-group--tree:not([open]) .sidebar-group__chevron {
  transform: rotate(-90deg);
}

.sidebar-link,
.student-side-nav__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 46px;
  min-width: 0;
  padding: 10px 14px 10px 18px;
  border-radius: var(--radius-2);
  border: 1px solid transparent;
  color: var(--text-strong);
  font-weight: 700;
  transition: background-color .18s ease, border-color .18s ease, transform .12s ease;
}

.sidebar-link:hover,
.student-side-nav__link:hover {
  background: var(--bg-hover);
  border-color: var(--line-default);
}

.sidebar-link.is-active,
.student-side-nav__link.is-active {
  background: var(--bg-selected);
  border-color: var(--selected-border);
}

.sidebar-link.is-active::before,
.student-side-nav__link.is-active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 3px;
  border-radius: 999px;
  background: var(--brand-700);
}

.sidebar-link__icon,
.student-side-nav__icon,
.icon-chip img,
.sidebar-link img,
.sidebar-link__icon img {
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  object-fit: contain;
  opacity: .88;
}

.sidebar-link span,
.student-side-nav__link span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.25;
}

.scope-switcher--sidebar .pill {
  justify-content: flex-start;
  width: 100%;
}

.sidebar-status,
.sidebar-help-btn,
.sidebar-collapse-btn,
.sidebar-icon-btn {
  width: 100%;
}

.sidebar-status {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 12px 14px;
  border-radius: var(--radius-2);
  background: color-mix(in srgb, var(--brand-100) 22%, var(--bg-panel) 78%);
  border: 1px solid var(--line-subtle);
  color: var(--text-strong);
  font-size: .92rem;
}

.sidebar-status__dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: #59d38a;
  box-shadow: 0 0 0 3px color-mix(in srgb, #59d38a 18%, transparent);
}

.sidebar-footer-compact {
  display: none;
  justify-items: stretch;
}

.sidebar-plan-note,
.sidebar-plan-note * {
  color: var(--text-body);
}

.sidebar-link__icon,
.student-side-nav__icon {
  filter: none;
}

.student-side-nav__toggle {
  min-width: 34px;
  min-height: 34px;
  border-radius: 12px;
  border: 1px solid var(--line-default);
  background: transparent;
  color: var(--text-strong);
  font: inherit;
  font-weight: 800;
}

body.sidebar-collapsed .app-shell {
  grid-template-columns: var(--sidebar-width-collapsed) minmax(0, 1fr);
}

body.sidebar-collapsed .app-sidebar {
  width: var(--sidebar-width-collapsed);
}

body.sidebar-collapsed .sidebar-group__title,
body.sidebar-collapsed .sidebar-link span,
body.sidebar-collapsed .sidebar-plan-note,
body.sidebar-collapsed .scope-switcher,
body.sidebar-collapsed .sidebar-status,
body.sidebar-collapsed .sidebar-help-btn,
body.sidebar-collapsed .sidebar-footer-expanded {
  display: none;
}

body.sidebar-collapsed .sidebar-footer-compact {
  display: grid;
}

body.sidebar-collapsed .sidebar-link {
  justify-content: center;
  padding-inline: 0;
}

body.sidebar-collapsed .sidebar-link::before {
  left: 8px;
}

.student-shell__body.student-nav-collapsed,
.student-shell__body--with-nav.student-nav-collapsed {
  grid-template-columns: 76px minmax(0, 1fr);
}

.student-shell__body.student-nav-collapsed .student-side-nav,
.student-shell__body--with-nav.student-nav-collapsed .student-side-nav {
  width: 76px;
}

.student-shell__body.student-nav-collapsed .student-side-nav__title,
.student-shell__body.student-nav-collapsed .student-side-nav__link span,
.student-shell__body--with-nav.student-nav-collapsed .student-side-nav__title,
.student-shell__body--with-nav.student-nav-collapsed .student-side-nav__link span {
  display: none;
}

.student-shell__body.student-nav-collapsed .student-side-nav__link,
.student-shell__body--with-nav.student-nav-collapsed .student-side-nav__link {
  justify-content: center;
  padding-inline: 0;
}

.student-shell__body.student-nav-collapsed .student-side-nav__link.is-active::before,
.student-shell__body--with-nav.student-nav-collapsed .student-side-nav__link.is-active::before {
  left: 3px;
}

.student-shell__body.student-nav-collapsed .student-side-nav__header,
.student-shell__body--with-nav.student-nav-collapsed .student-side-nav__header {
  justify-content: center;
}

.student-shell__body.student-nav-collapsed .student-side-nav__toggle,
.student-shell__body--with-nav.student-nav-collapsed .student-side-nav__toggle {
  margin-inline: auto;
}

/* ==========================================================================
   8. BUTTONS / PILLS / TABS / FORMS
   ========================================================================== */

.btn,
.button-row button,
.button-row a,
.section-actions button,
.auth-inline-link,
.auth-inline-link--button,
.homepage-btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--control-height);
  padding: 0 16px;
  border-radius: var(--radius-2);
  border: 1px solid transparent;
  font-weight: 760;
  text-align: center;
  line-height: 1.1;
  letter-spacing: -.01em;
  transition: transform .12s ease, border-color .16s ease, background-color .16s ease, box-shadow .16s ease;
}

.btn:hover,
.button-row button:hover,
.button-row a:hover,
.section-actions button:hover,
.homepage-btn:hover {
  transform: translateY(-1px);
}

.btn.primary,
.button-row .primary,
.homepage-btn--primary {
  background: linear-gradient(135deg, var(--brand-700), var(--brand-600));
  color: var(--text-inverse);
  box-shadow: var(--shadow-sm);
}

.btn.secondary,
.button-row .secondary,
.homepage-btn--secondary,
.auth-inline-link,
.auth-inline-link--button,
.btn.ghost,
.button-row .ghost,
.tab-button,
.pill,
.nav-pill,
.role-chip,
.mini-badge,
.status-pill.soft,
.status-pill.neutral,
.mp-command,
.mp-home-link,
.mp-portal-pill,
.student-side-nav__toggle {
  background: var(--bg-interactive);
  color: var(--text-strong);
  border-color: var(--line-default);
}

.btn.secondary:hover,
.button-row .secondary:hover,
.btn.ghost:hover,
.button-row .ghost:hover,
.tab-button:hover,
.pill:hover,
.nav-pill:hover,
.role-chip:hover,
.mini-badge:hover,
.student-side-nav__toggle:hover {
  background: var(--bg-hover);
  border-color: var(--line-strong);
}

.btn.accent {
  background: linear-gradient(135deg, color-mix(in srgb, #dbc28d 70%, white 30%), color-mix(in srgb, #dbc28d 42%, white 58%));
  color: #28301b;
  border-color: color-mix(in srgb, #dbc28d 50%, var(--line-default) 50%);
}

.btn.danger {
  background: var(--danger-100);
  color: var(--danger-700);
  border-color: color-mix(in srgb, var(--danger-700) 18%, var(--line-default) 82%);
}

.btn.icon,
.mp-topbar__control,
.sidebar-icon-btn {
  min-width: var(--control-height);
}

.btn.btn-compact,
.btn-compact,
.account-grid .tab-button,
.page-header .btn,
.student-topbar .button-row .btn,
.public-header .nav-pill,
.student-topbar .nav-pill,
.auth-switch__tab {
  min-height: var(--control-height-sm);
  border-radius: 12px;
}

.btn.btn-text {
  min-height: auto;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--brand-700);
  box-shadow: none;
}

.btn.btn-text:hover { text-decoration: underline; }

.btn:disabled,
.button-row button:disabled,
.section-actions button:disabled,
button[disabled],
.tab-button:disabled,
.btn[aria-disabled="true"] {
  opacity: 1;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
  color: var(--text-disabled);
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 86%, var(--bg-panel-2) 14%), color-mix(in srgb, var(--bg-panel-2) 92%, var(--bg-panel-3) 8%));
  border-color: var(--line-subtle);
}

.btn:disabled *,
.button-row button:disabled * {
  color: inherit;
}

.button-row {
  flex-wrap: wrap;
}

.button-row.stack {
  flex-direction: column;
  align-items: stretch;
}

.button-row--equal {
  justify-content: flex-end;
  flex-wrap: wrap;
}

.button-row--equal > .btn,
.button-row--equal > a,
.button-row--equal > button {
  min-width: 164px;
}

.button-row--dense { gap: var(--space-2); }
.button-row--flush { margin-top: var(--space-1); }

.pill-nav {
  justify-content: center;
}

.pill,
.nav-pill,
.status-pill,
.role-chip,
.mini-badge,
.icon-chip,
.visual-answer-pair {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 40px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-default);
  background: var(--bg-interactive);
  color: var(--text-strong);
  font-weight: 700;
}

.pill.is-active,
.nav-pill.is-active,
.tab-button.is-active,
[role="tab"][aria-selected="true"] {
  background: var(--bg-selected);
  border-color: var(--selected-border);
  color: var(--text-strong);
}

.status-pill.success {
  background: var(--success-100);
  color: var(--success-700);
  border-color: color-mix(in srgb, var(--success-700) 22%, var(--line-default) 78%);
}

.status-pill.warning {
  background: var(--warning-100);
  color: var(--warning-700);
  border-color: color-mix(in srgb, var(--warning-700) 22%, var(--line-default) 78%);
}

.status-pill.danger {
  background: var(--danger-100);
  color: var(--danger-700);
  border-color: color-mix(in srgb, var(--danger-700) 18%, var(--line-default) 82%);
}

.tabs,
.tab-strip {
  width: fit-content;
  flex-wrap: wrap;
  padding: 4px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line-subtle);
  background: color-mix(in srgb, var(--bg-panel-2) 84%, transparent);
}

.tab-button {
  min-height: 40px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  font-weight: 700;
}

input,
select,
textarea,
.search-box,
.search-input,
.command-palette__input,
.mp-command,
.mp-command-palette__input {
  width: 100%;
  min-height: var(--control-height);
  border-radius: var(--radius-2);
  border: 1px solid var(--line-default);
  background: var(--bg-interactive);
  color: var(--text-strong);
  padding: 11px 14px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.35);
}

input::placeholder,
textarea::placeholder,
.mp-command-palette__input::placeholder {
  color: var(--text-soft);
  opacity: 1;
}

input:not([type="checkbox"]):not([type="radio"]),
select,
textarea {
  padding-inline: 18px;
}

textarea {
  padding-block: 12px;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible,
.search-box:focus-visible,
.search-input:focus-visible,
.command-palette__input:focus-visible,
.mp-command:focus-visible,
.mp-command-palette__input:focus-visible {
  border-color: var(--brand-600);
  box-shadow: 0 0 0 3px var(--focus-ring);
}

label,
.field-group,
.selector-row label {
  display: grid;
  gap: 8px;
  font-weight: 700;
  color: var(--text-strong);
}

.toggle-row,
.label-inline {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.toggle-row input,
.appearance-card input,
.option-chip--compact input {
  width: auto;
  min-height: auto;
}

.selector-row { align-items: end; }
.selector-row .field-help,
.field-help--inline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--brand-100) 62%, transparent);
  color: var(--brand-700);
  cursor: help;
  font-weight: 700;
  margin-left: 2px;
}

/* option chips */
.option-chip {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-height: 52px;
  padding: 12px 14px;
  border-radius: var(--radius-3);
  border: 1px solid var(--line-default);
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 98%, white 2%), color-mix(in srgb, var(--bg-panel-2) 94%, white 6%));
  box-shadow: var(--surface-shadow-ui);
}

.option-chip:hover {
  border-color: var(--line-strong);
  background: var(--bg-hover);
}

.option-chip:has(input:checked) {
  background: var(--bg-selected);
  border-color: var(--selected-border);
}

.option-chip input[type="radio"],
.option-chip input[type="checkbox"] {
  appearance: none;
  width: 22px;
  height: 22px;
  min-height: 22px;
  margin: 0;
  border: 1.8px solid var(--line-strong);
  background: var(--bg-panel);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.84);
}

.option-chip input[type="radio"] { border-radius: 999px; }
.option-chip input[type="checkbox"] { border-radius: 7px; }

.option-chip input[type="radio"]:checked,
.option-chip input[type="checkbox"]:checked {
  border-color: var(--brand-700);
}

.option-chip input[type="radio"]:checked {
  background: radial-gradient(circle at center, var(--brand-700) 0 42%, #fff 46% 100%);
}

.option-chip input[type="checkbox"]:checked {
  background: linear-gradient(135deg, var(--brand-700), var(--brand-600));
  position: relative;
}

.option-chip input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  width: 6px;
  height: 11px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  left: 7px;
  top: 3px;
}

.option-chip--compact {
  min-height: 44px;
  padding: 10px 12px;
  border-radius: var(--radius-2);
}

.option-chip--tile,
.option-chip--single {
  justify-content: center;
  text-align: center;
  min-height: var(--tile-min-height);
}

.option-chip--tile input,
.option-chip--single input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.option-chip--tile span,
.option-chip--single span {
  width: 100%;
  text-align: center;
  font-weight: 750;
}

.option-chip--symbol {
  min-height: 82px;
  border-radius: 22px;
  padding: 12px 16px;
}

.option-chip--symbol span {
  font-size: clamp(2.6rem, 5vw, 4rem);
  line-height: 1;
  font-weight: 800;
}

/* ==========================================================================
   9. TABLES + LISTS + MESSAGES
   ========================================================================== */

.table-wrap {
  overflow: auto;
  padding: 0;
}

.table-wrap table,
table,
.visual-table {
  width: 100%;
  border-collapse: collapse;
  background: transparent;
}

.table-wrap th,
.table-wrap td,
th,
td {
  padding: var(--row-padding-y) var(--row-padding-x);
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-subtle);
  color: var(--text-strong);
}

.table-wrap th,
th {
  position: sticky;
  top: 0;
  background: linear-gradient(180deg, color-mix(in srgb, var(--brand-100) 42%, var(--bg-panel) 58%), color-mix(in srgb, var(--bg-panel-2) 84%, white 16%));
  color: var(--text-body);
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-weight: 800;
}

.table-wrap tbody tr:hover,
tbody tr:hover {
  background: color-mix(in srgb, var(--brand-100) 26%, var(--bg-panel) 74%);
}

.table-wrap td strong,
.data-item strong {
  color: var(--text-strong);
}

.data-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-3);
  align-items: start;
}

.empty-state {
  gap: var(--space-2);
  justify-items: start;
}

.empty-state strong {
  font-size: 1.25rem;
}

.inline-notice.warning {
  background: var(--warning-100);
  border-color: color-mix(in srgb, var(--warning-700) 20%, var(--line-default) 80%);
}

.inline-notice.danger {
  background: var(--danger-100);
  border-color: color-mix(in srgb, var(--danger-700) 18%, var(--line-default) 82%);
}

.inline-notice--soft {
  margin-bottom: var(--space-3);
}

.audit-warning-panel {
  margin-bottom: var(--space-4);
  padding: 14px 16px;
  border-radius: var(--radius-3);
  border: 1px solid color-mix(in srgb, var(--warning-700) 28%, var(--line-default) 72%);
  background: color-mix(in srgb, var(--warning-100) 78%, var(--bg-panel) 22%);
  box-shadow: var(--shadow-sm);
}

.audit-warning-panel strong {
  display: block;
  margin-bottom: var(--space-2);
}

.audit-warning-panel ul {
  margin: 0;
  padding-left: 18px;
}

.audit-warning-panel li {
  margin: 6px 0;
}

.audit-warning-panel__source {
  display: inline-block;
  min-width: 110px;
  font-weight: 700;
  text-transform: capitalize;
}

/* ==========================================================================
   10. TYPOGRAPHY + SECTION CHROME
   ========================================================================== */

.card-title,
.section-header h1,
.section-header h2,
.section-header h3,
.page-header h1,
.hero-copy h1,
.workspace-hero h1,
.auth-panel h1,
.student-auth-panel h1,
.runner-question-title,
.runner-prompt__main,
.homepage-hero__copy h1,
.homepage-section__title,
.homepage-card h3,
.homepage-journey-card h3 {
  margin: 0;
  color: var(--text-strong);
  letter-spacing: -.03em;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 6px;
}

.hero-copy h1,
.auth-panel h1,
.student-auth-panel h1,
.workspace-hero h1 {
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1.02;
}

.runner-question-title {
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  line-height: 1.1;
}

.section,
.runner-shell,
.homepage-shell,
.homepage-section {
  gap: var(--space-4);
}

.section.section--compact,
.section--compact {
  gap: 14px;
}

.section-soft {
  padding-top: 8px;
}

.section-header,
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.section-header--stacked { align-items: flex-start; }
.section-header--tight { align-items: center; }

.section-header p,
.page-header p {
  max-width: 72ch;
}

.section-header h1,
.section-header h2,
.section-header h3,
.page-header h1 {
  margin: 6px 0 2px;
  letter-spacing: -.03em;
}

.clean-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: var(--space-2);
}

/* ==========================================================================
   11. HERO / PUBLIC / HOMEPAGE
   ========================================================================== */

.hero {
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, .95fr);
  align-items: stretch;
}

.hero-copy,
.hero-preview,
.auth-panel,
.auth-aside,
.student-auth-panel,
.student-auth-aside {
  border-radius: 28px;
}

.hero-copy p,
.homepage-hero__copy p,
.homepage-section__sub,
.auth-panel p,
.auth-aside p,
.student-auth-panel p,
.student-auth-aside p {
  color: var(--text-body);
}

.homepage-shell {
  gap: var(--space-7);
  padding-top: 28px;
}

.homepage-hero {
  gap: 34px;
  align-items: center;
}

.homepage-hero__copy {
  display: grid;
  gap: 18px;
}

.homepage-hero__copy h1 {
  font-size: clamp(3.1rem, 7vw, 6rem);
  line-height: .96;
  letter-spacing: -.06em;
  max-width: 8ch;
}

.homepage-hero__copy p {
  font-size: clamp(1.15rem, 1.6vw, 1.7rem);
  max-width: 22ch;
}

.homepage-hero__actions {
  display: grid;
  gap: 14px;
  max-width: 38rem;
}

.homepage-hero__actions .btn,
.homepage-btn {
  justify-content: center;
  min-width: 11rem;
}

.homepage-cockpit {
  display: grid;
  place-items: center;
  min-height: clamp(280px, 34vw, 420px);
  background: transparent;
  border: 0;
  box-shadow: none;
  padding: 0;
}

.homepage-cockpit img {
  width: min(100%, 560px);
  max-height: 100%;
  height: auto;
  object-fit: contain;
  object-position: center;
  margin-inline: auto;
}

.homepage-card,
.homepage-journey-card {
  padding: 18px 16px 22px;
  border-radius: 26px;
}

.homepage-card__icon {
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  border-radius: 18px;
  background: color-mix(in srgb, var(--brand-100) 60%, white 40%);
  color: var(--brand-700);
}

html[data-appearance="dark"] .homepage-card__icon,
html[data-theme="dark"] .homepage-card__icon,
body.theme-dark .homepage-card__icon {
  background: color-mix(in srgb, var(--brand-100) 84%, white 16%);
  color: var(--brand-700);
}

.homepage-card__icon svg {
  width: 26px;
  height: 26px;
}

.homepage-card h3,
.homepage-journey-card h3 {
  margin: 14px 0 10px;
  font-size: clamp(1.8rem, 2.5vw, 2.6rem);
  line-height: 1;
}

.homepage-journey-card--route h3 {
  margin-top: 0;
}

.homepage-card p,
.homepage-journey-card p {
  margin: 0;
}

.homepage-section__eyebrow,
.homepage-card__eyebrow {
  font-size: .9rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 800;
  color: color-mix(in srgb, var(--text-strong) 58%, transparent);
}

.homepage-section__title {
  font-size: clamp(2rem, 3.2vw, 3rem);
}

.homepage-section__sub {
  max-width: 48rem;
}

.homepage-journey-card .btn {
  width: fit-content;
  margin-top: auto;
}

.homepage-shell--v18-6-14 {
  display: grid;
  gap: 2rem;
}

.homepage-shell--v18-6-14 .homepage-card,
.homepage-shell--v18-6-14 .homepage-journey-card {
  min-height: 100%;
  padding: 1.6rem;
  border-radius: 1.5rem;
}

.homepage-hero__copy--landing {
  max-width: 36rem;
  align-content: start;
}

.homepage-hero__copy--landing h1 {
  max-width: 12.2ch;
  font-size: clamp(3.2rem, 5.35vw, 5.5rem);
  line-height: .96;
  letter-spacing: -.055em;
}

.homepage-hero__sub--landing {
  margin: 0;
  max-width: 26ch;
  font-size: clamp(1.02rem, 1.22vw, 1.16rem);
  line-height: 1.42;
  color: color-mix(in srgb, var(--text-strong) 78%, white 22%);
}

.homepage-hero__actions--landing {
  width: auto;
  display: flex;
  flex-wrap: wrap;
  gap: .85rem;
}

.homepage-hero--landing {
  padding: clamp(1.5rem, 3vw, 2.4rem);
  border-radius: 32px;
  border: 1px solid var(--line-default);
  background:
    radial-gradient(circle at top left, color-mix(in srgb, var(--brand-100) 32%, transparent), transparent 42%),
    linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 96%, white 4%), color-mix(in srgb, var(--bg-panel-2) 92%, var(--bg-panel) 8%));
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.homepage-hero__eyebrow {
  font-size: .82rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--text-strong) 60%, transparent);
}

.homepage-proof-strip {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

.homepage-proof-pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: .5rem .82rem;
  border-radius: 999px;
  border: 1px solid var(--line-default);
  background: color-mix(in srgb, var(--bg-panel) 88%, white 12%);
  color: var(--text-strong);
  font-weight: 700;
  font-size: .86rem;
}


.homepage-hero--landing .homepage-cockpit {
  width: 100%;
  min-height: clamp(290px, 33vw, 410px);
  align-self: center;
}

.homepage-hero--landing .homepage-cockpit img {
  width: min(100%, 640px);
  max-height: clamp(290px, 31vw, 400px);
}

@media (min-width: 1200px) {
  .homepage-hero--landing {
    grid-template-columns: minmax(0, .9fr) minmax(430px, 1.1fr);
    gap: clamp(1.5rem, 2.4vw, 2.6rem);
  }

  .homepage-hero--landing .homepage-cockpit {
    justify-self: center;
  }
}

.homepage-feature-grid--landing,
.homepage-journey-grid--landing {
  gap: 1.1rem;
}

.homepage-card--mode {
  gap: .35rem;
}

.homepage-journey-card {
  gap: .65rem;
}

.homepage-section--landing {
  gap: 1rem;
}

.legal-page-shell {
  padding-top: 20px;
}

.section--legal {
  padding-top: 0;
}

.legal-card {
  padding: clamp(1.35rem, 2.6vw, 2rem);
  border-radius: 28px;
}

.legal-card--simple {
  max-width: 760px;
  margin: 0 auto;
}

.legal-meta {
  margin: 10px 0 0;
  font-size: .92rem;
  font-weight: 700;
  color: var(--text-body);
}

.legal-intro {
  margin: 12px 0 0;
  max-width: 64ch;
}

.legal-stack {
  display: grid;
  gap: 1rem;
  margin-top: 1.4rem;
}

.legal-section {
  display: grid;
  gap: .55rem;
  padding: 1rem 1.05rem;
  border: 1px solid var(--line-subtle);
  border-radius: 20px;
  background: color-mix(in srgb, var(--bg-panel) 90%, white 10%);
}

.legal-section h2 {
  margin: 0;
  font-size: clamp(1rem, 1.4vw, 1.2rem);
}

.legal-section p {
  margin: 0;
  line-height: 1.65;
}

/* ==========================================================================
   12. AUTH MODULE
   ========================================================================== */

.auth-panel,
.auth-aside,
.student-auth-panel,
.student-auth-aside {
  min-height: 420px;
}

.auth-panel,
.auth-aside {
  padding: 28px;
}

.auth-panel__inner,
.auth-panel__inner--tabbed,
.student-auth-panel {
  width: min(100%, 35rem);
  max-width: 35rem;
}

.auth-panel--tabbed {
  align-content: start;
}

.auth-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.auth-switch__tab {
  min-height: 44px;
}

.auth-tab-panel.is-hidden,
.auth-aside-panel.is-hidden {
  display: none;
}

.auth-aside-panel {
  display: grid;
  gap: 14px;
  align-content: start;
  min-height: 100%;
}

.auth-aside .auth-illustration {
  align-self: center;
  justify-self: center;
}

.auth-illustration,
.section-illustration,
.student-illustration-card img,
.student-auth-aside img,
.page-asset {
  object-fit: contain;
}

.auth-illustration,
.section-illustration,
.page-asset {
  display: block;
  width: min(100%, 100%);
  border: 0;
  background: transparent;
  padding: 0;
  box-shadow: none;
  object-position: center;
  margin-inline: auto;
}

.auth-illustration {
  min-height: 240px;
  max-height: 320px;
  height: clamp(240px, 30vw, 320px);
}

.auth-point {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-3);
  align-items: start;
  padding: 12px 14px;
  border-radius: var(--radius-3);
  background: color-mix(in srgb, var(--bg-panel) 82%, transparent);
  border: 1px solid var(--line-subtle);
}

.auth-point .status-pill {
  min-height: 28px;
  min-width: 28px;
  justify-content: center;
  padding: 0;
}

.auth-panel .button-row,
.student-auth-panel .button-row {
  gap: 14px;
  align-items: center;
  margin-top: 14px;
}

.auth-panel .button-row .btn.primary,
.student-auth-panel .button-row .btn.primary {
  min-width: 220px;
}

/* ==========================================================================
   13. KPI / METRIC / RECOMMENDATION / REWARDS
   ========================================================================== */

.metric-card,
.kpi-card {
  min-height: 0;
  padding: 14px;
}

.metric-card .label,
.kpi-card .label {
  font-size: .78rem;
  color: var(--text-body);
}

.metric-card .value,
.kpi-card .value,
.hero-stat strong,
.workspace-kpi strong {
  font-size: clamp(1.45rem, 2.4vw, 2rem);
  line-height: 1.04;
  font-weight: 800;
  color: var(--text-strong);
}

.kpi-card--quiet {
  background: color-mix(in srgb, var(--bg-elevated) 86%, #fff 14%);
}

.kpi-card--featured {
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-elevated) 88%, #fff 12%), color-mix(in srgb, var(--bg-panel) 94%, transparent));
  box-shadow: var(--shadow-md), 0 0 0 1px color-mix(in srgb, var(--brand-500) 12%, transparent);
}

.kpi-card--mission .value,
.kpi-card--featured .value {
  color: var(--brand-500);
}

.kpi-card--completion .value {
  color: #59d38a;
}

.recommendation-card {
  display: grid;
  gap: var(--space-3);
  min-height: 0;
  padding: 14px 16px;
}

.recommendation-card h3 {
  margin: 0;
  font-size: 1.12rem;
  line-height: 1.25;
}

.recommendation-card .inline-notice {
  margin-top: auto;
}

.recommendation-card--quiet {
  box-shadow: var(--shadow-sm);
}

.reward-card {
  display: grid;
  gap: var(--space-3);
}

.reward-card__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: 10px;
}

.reward-card__icon {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, color-mix(in srgb, #dbc28d 30%, white 70%), color-mix(in srgb, var(--brand-100) 28%, white 72%));
  font-size: 20px;
}

/* ==========================================================================
   14. RUNNER / PRACTICE EXPERIENCE
   ========================================================================== */

.runner-shell {
  display: grid;
  gap: var(--space-4);
}

.runner-bar,
.runner-status-bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-3);
  align-items: center;
}

.runner-status-bar--wide {
  position: sticky;
  top: 14px;
  z-index: 25;
}

.runner-status-bar__main,
.runner-question-panel--visual,
.runner-question-panel--compact-readability .runner-question-body--focus,
.runner-question-panel--choice .runner-answer-panel,
.visual-answer-shell__actions,
.runner-progress-head,
.runner-answer-stack,
.runner-shell .runner-keyboard-wrap {
  display: grid;
  gap: var(--space-3);
}

.runner-question-panel {
  overflow: hidden;
  padding: 0;
}

.runner-question-head,
.runner-answer-head,
.runner-shell .runner-action-bar {
  justify-content: space-between;
  flex-wrap: wrap;
}

.runner-question-head {
  padding: 28px 30px 20px;
  border-bottom: 1px solid var(--line-subtle);
}

.runner-question-head--simple {
  padding-bottom: 0;
  border-bottom: 0;
}

.runner-shell .runner-question-body {
  padding: 20px 30px 0;
}

.runner-question-body--focus {
  align-content: center;
  justify-items: center;
}

.runner-question-body-v2.runner-question-body--focus {
  align-content: start;
  justify-items: stretch;
}

.runner-shell .runner-prompt {
  justify-items: center;
  text-align: center;
}

.runner-prompt--raw {
  justify-items: start;
  width: 100%;
}

.runner-prompt__label,
.runner-question-meta {
  color: var(--brand-700);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: .86rem;
}

.runner-prompt__intro,
.runner-prompt__context,
.runner-prompt__detail,
.runner-helper,
.visual-answer-shell__helper {
  color: var(--text-soft);
  font-size: .98rem;
  line-height: 1.45;
  max-width: 56ch;
}

.runner-shell .runner-prompt__main {
  font-size: clamp(1.5rem, 4vw, 3.5rem);
  line-height: 1.16;
  font-weight: 800;
  text-wrap: balance;
  max-width: 26ch;
}

.runner-shell .runner-prompt--short .runner-prompt__main {
  max-width: 14ch;
  font-size: clamp(2.2rem, 4.6vw, 4.2rem);
}

.runner-shell .runner-prompt--wordy .runner-prompt__intro {
  font-size: clamp(1.25rem, 2vw, 2rem);
  font-weight: 500;
}

.runner-shell .runner-prompt--wordy .runner-prompt__main {
  font-size: clamp(2rem, 4vw, 4rem);
  max-width: 18ch;
  line-height: 1.08;
}

.runner-prompt--with-visual .runner-prompt__main,
.runner-prompt--chart .runner-prompt__main,
.runner-prompt--grid .runner-prompt__main,
.runner-prompt--number-line .runner-prompt__main,
.runner-prompt--probability .runner-prompt__main,
.runner-prompt--angle .runner-prompt__main,
.runner-shell .runner-prompt--fraction-model .runner-prompt__main {
  max-width: 28ch;
  font-size: clamp(1.35rem, 2.2vw, 2.05rem);
}

.runner-prompt--ratio .runner-prompt__main,
.runner-prompt--condition .runner-prompt__main,
.runner-prompt--sequence .runner-prompt__main,
.runner-shell .runner-prompt--missing-number .runner-prompt__main {
  max-width: 26ch;
  font-size: clamp(1.5rem, 2.5vw, 2.2rem);
}

.runner-prompt--equation .runner-prompt__main,
.runner-shell .runner-prompt--symbol .runner-prompt__main {
  max-width: 20ch;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.1;
}

.runner-shell .runner-prompt--fraction-expression .runner-prompt__main {
  max-width: none;
  white-space: nowrap;
  font-size: clamp(2rem, 3.8vw, 3.15rem);
  line-height: 1.05;
}

.runner-shell .runner-prompt--compact-flow .runner-prompt__main {
  max-width: 26ch;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
}

.runner-shell .runner-answer-panel {
  margin: 20px 22px 0;
  border-radius: 22px;
}

.runner-answer-head h2 {
  margin: 0;
  font-size: 1.15rem;
}

.runner-answer-panel input,
.runner-answer-panel select,
.runner-answer-panel textarea,
.runner-answer-field input,
.runner-answer-panel .option-chip {
  min-height: 58px;
  font-size: 1.08rem;
  border-radius: 16px;
}

.runner-answer-panel input,
.runner-answer-panel textarea,
.runner-answer-panel select {
  padding-left: 26px;
  font-size: 1.2rem;
}

.runner-answer-field > span,
.runner-answer-field .field-label {
  font-weight: 700;
}

.runner-shell .runner-action-bar {
  padding: 18px 22px 22px;
  margin-top: 8px;
  border-top: 1px solid var(--line-subtle);
  background: color-mix(in srgb, var(--bg-panel) 84%, var(--bg-panel-2) 16%);
}

.runner-side-panel {
  position: sticky;
  top: calc(var(--header-height) + 14px);
  display: grid;
  gap: var(--space-3);
}

.runner-side-card,
.runner-visual-panel .visual-card {
  display: grid;
  gap: var(--space-3);
}

.progress-bar {
  position: relative;
  height: 10px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--brand-500) 10%, transparent);
  overflow: hidden;
}

.progress-bar--runner {
  height: 14px;
}

.progress-bar > span,
.progress-bar span {
  position: absolute;
  inset: 0 auto 0 0;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--brand-700), var(--brand-500));
}

.progress-ring {
  width: 78px;
  height: 78px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at center, var(--bg-panel) 58%, transparent 59%), conic-gradient(var(--brand-700) var(--progress, 0%), color-mix(in srgb, var(--brand-500) 10%, transparent) 0);
  box-shadow: inset 0 0 0 1px var(--line-subtle);
}

.runner-shell .runner-keyboard {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-3);
}

.runner-shell .runner-keyboard .btn {
  min-height: 56px;
  font-size: 1.08rem;
}

.runner-shell .runner-keyboard .btn[data-runner-key="enter"] {
  grid-column: 1 / -1;
  min-height: 58px;
  font-size: 1.2rem;
}

.frac {
  display: inline-grid;
  grid-template-rows: auto 2px auto;
  align-items: center;
  justify-items: center;
  margin: 0 .08em;
  min-width: 1.2em;
  vertical-align: middle;
}

.frac__bar {
  display: block;
  width: 100%;
  background: currentColor;
  height: 2px;
}

.frac__top,
.frac__bottom {
  line-height: 1.05;
  font-size: .7em;
}

.runner-blank-slot {
  display: inline-flex;
  width: 1.2em;
  min-width: 1.2em;
  height: .9em;
  margin: 0 .08em;
  vertical-align: -.04em;
  border-bottom: .12em solid currentColor;
  border-radius: .12em;
}

.official-crop-wrap {
  width: min(100%, 920px);
  max-width: 100%;
  max-height: var(--runner-visual-max-h, none);
  display: grid;
  place-items: center;
  overflow: hidden;
  background: var(--bg-panel);
  border: 1px solid var(--line-default);
  border-radius: 22px;
  padding: 14px;
  box-shadow: var(--shadow-sm);
}

.official-crop-image {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: calc(var(--runner-visual-max-h, 100dvh) - 28px);
  height: auto;
  border-radius: 14px;
}

.question-image-wrap {
  width: min(100%, 980px);
  max-width: 100%;
  max-height: var(--runner-visual-max-h, none);
  margin: 0;
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: 10px;
  border-radius: 18px;
  border: 1px solid var(--line-subtle);
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 96%, white 4%), color-mix(in srgb, var(--bg-panel) 84%, var(--bg-panel-2) 16%));
}

.question-image {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: calc(var(--runner-visual-max-h, 100dvh) - 20px);
  height: auto;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
}

/* visuals */
.visual-svg,
.visual-svg--chart,
.visual-svg--grid,
.visual-svg--number-line,
.visual-svg--angle,
.visual-svg--fraction-model,
.visual-svg--probability-scale {
  width: 100%;
  height: auto;
  display: block;
  margin-inline: auto;
}

.visual-svg--grid { max-width: 860px; }
.visual-svg--number-line,
.visual-svg--fraction-model,
.visual-svg--probability-scale { max-width: 760px; }
.visual-svg--chart { max-width: 820px; }
.visual-svg--angle { max-width: 520px; }

.visual-axis,
.visual-number-line-track,
.visual-number-line-tick,
.visual-axis--probability,
.visual-axis--x-strong,
.visual-axis--y-strong {
  stroke: color-mix(in srgb, var(--text-strong) 88%, white 12%);
}

.visual-axis { stroke-width: 3; }
.visual-grid-line { stroke: color-mix(in srgb, var(--line-default) 78%, white 22%); stroke-width: 1.6; }
.visual-grid-line--baseline { opacity: .72; }
.visual-number-line-track,
.visual-number-line-tick { shape-rendering: geometricPrecision; }
.visual-number-line-track { stroke-width: 3.4; stroke-linecap: round; }
.visual-number-line-tick { stroke-width: 2.4; stroke-linecap: round; }
.visual-number-line-arrow { fill: color-mix(in srgb, var(--text-strong) 88%, white 12%); }
.visual-axis-label,
.visual-value-label,
.visual-axis-caption,
.visual-axis-label--probability,
.visual-axis-label--x,
.visual-axis-letter {
  fill: var(--text-strong);
  font-size: 13px;
  font-weight: 800;
}
.visual-axis-label--probability,
.visual-axis-label--x,
.visual-axis-letter {
  font-size: 1rem;
  font-weight: 900;
}
.visual-axis-caption { letter-spacing: .01em; }
.visual-axis-arrow { fill: color-mix(in srgb, var(--text-strong) 90%, white 10%); }
.visual-guide-line { stroke: color-mix(in srgb, var(--student-500) 66%, white 34%); stroke-width: 2.5; stroke-dasharray: 8 7; }
.visual-guide-line--symmetry { stroke-width: 3.2; stroke-dasharray: 10 6; }
.visual-axis-caption--symmetry { fill: color-mix(in srgb, var(--student-700) 86%, white 14%); font-weight: 900; }
.visual-point-label { fill: var(--text-strong); font-size: 20px; font-weight: 900; letter-spacing: .01em; paint-order: stroke; stroke: rgba(255,255,255,.88); stroke-width: 4px; stroke-linejoin: round; }
.visual-point-label--target { fill: color-mix(in srgb, var(--warning-700) 80%, black 20%); }
.visual-bar { fill: color-mix(in srgb, var(--student-500) 76%, white 24%); }
.visual-line { stroke: color-mix(in srgb, var(--student-500) 74%, white 26%); stroke-width: 4; }
.visual-point-fill { fill: color-mix(in srgb, var(--student-500) 82%, black 18%); }
.visual-point-given { fill: color-mix(in srgb, var(--success-700) 78%, white 22%); }
.visual-point-target { fill: color-mix(in srgb, var(--warning-700) 74%, white 26%); }
.visual-probability-pointer { stroke: color-mix(in srgb, var(--student-700) 84%, white 16%); stroke-width: 3; }
.visual-probability-point-ring { fill: white; stroke: color-mix(in srgb, var(--student-500) 82%, white 18%); stroke-width: 3; }
.visual-angle-arc,
.visual-angle-guide-ring,
.visual-angle-triangle,
.visual-angle-square,
.visual-angle-arc--around-point { fill: none; stroke: color-mix(in srgb, var(--line-default) 74%, var(--text-strong) 26%); stroke-width: 2.2; }
.visual-angle-arc { stroke: color-mix(in srgb, var(--student-700) 62%, var(--text-strong) 38%); stroke-width: 3.2; stroke-linecap: butt; }
.visual-angle-arc--secondary { stroke-width: 2.6; }
.visual-angle-arc--around-point { stroke-dasharray: none; stroke-width: 2.8; }
.visual-angle-label { fill: var(--text-strong); font-size: 16px; font-weight: 900; }
.visual-polygon { vector-effect: non-scaling-stroke; }
.visual-polygon--source { fill: color-mix(in srgb, var(--student-500) 18%, white 82%); stroke: color-mix(in srgb, var(--text-strong) 68%, white 32%); stroke-width: 3.2; }
.visual-polygon--answer { fill: color-mix(in srgb, var(--warning-500) 16%, white 84%); stroke: color-mix(in srgb, var(--warning-700) 70%, var(--text-strong) 30%); stroke-width: 3.2; }
.visual-polygon--selected { stroke: color-mix(in srgb, var(--student-700) 78%, white 22%); stroke-width: 3.4; }
.visual-polygon--selected.is-complete { fill: color-mix(in srgb, var(--student-500) 16%, white 84%); }

.visual-hit,
.visual-hit--tick,
.visual-cell-hit,
.visual-shape,
.drag-label-slot,
.visual-hit--number-line {
  transition: transform .16s ease, box-shadow .16s ease, fill .16s ease, stroke .16s ease, background .16s ease;
}

.visual-hit {
  fill: rgba(255,255,255,.01);
  stroke: transparent;
  cursor: pointer;
}

.visual-hit:hover,
.visual-hit.is-selected,
.visual-hit--tick.is-selected,
.visual-hit--number-line:hover,
.visual-hit--number-line:focus-visible,
.visual-hit--number-line.is-selected {
  fill: color-mix(in srgb, var(--student-200) 60%, white 40%);
  stroke: color-mix(in srgb, var(--student-500) 72%, white 28%);
  stroke-width: 2;
}

.visual-cell-given {
  fill: color-mix(in srgb, var(--student-500) 68%, white 32%);
  opacity: .58;
}

.visual-cell-hit {
  fill: rgba(255,255,255,.01);
  stroke: color-mix(in srgb, var(--line-default) 68%, white 32%);
  stroke-width: 1;
  cursor: crosshair;
}

.visual-cell-hit.is-selected {
  fill: color-mix(in srgb, var(--student-300) 62%, white 38%);
  stroke: color-mix(in srgb, var(--student-500) 78%, white 22%);
  stroke-width: 2;
}

.visual-shape {
  fill: color-mix(in srgb, var(--student-100) 52%, white 48%);
  stroke: color-mix(in srgb, var(--text-strong) 78%, white 22%);
  stroke-width: 2.2;
}

.visual-shape.is-selected {
  fill: color-mix(in srgb, var(--student-300) 65%, white 35%);
  stroke: color-mix(in srgb, var(--student-500) 82%, white 18%);
}

.visual-clock-face {
  fill: color-mix(in srgb, white 90%, var(--student-100) 10%);
  stroke: color-mix(in srgb, var(--text-strong) 80%, white 20%);
  stroke-width: 3;
}

.visual-clock-minute {
  stroke: color-mix(in srgb, var(--student-500) 75%, white 25%);
  stroke-width: 4;
  stroke-linecap: round;
}

.visual-clock-hour {
  stroke: var(--text-strong);
  stroke-width: 5.5;
  stroke-linecap: round;
}

.runner-shell-v2 .visual-answer-shell {
  gap: 10px;
}

.runner-shell-v2 .visual-answer-shell--interactive {
  padding-top: 2px;
}

.runner-shell-v2 .visual-answer-shell__support {
  display: grid;
  gap: 10px;
}

.runner-shell-v2 .visual-answer-shell__helper {
  max-width: none;
}

.runner-shell-v2 .visual-answer-shell__actions {
  grid-template-columns: 1fr;
  width: min(100%, 420px);
}

.runner-shell-v2 .visual-answer-shell__actions .btn {
  min-height: 44px;
}

.visual-answer-shell__summary {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  align-items: center;
  min-height: 42px;
  padding: 10px 12px;
  border-radius: var(--radius-3);
  border: 1px solid var(--line-default);
  color: var(--text-strong);
}

.visual-answer-pair {
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, var(--student-100) 60%, white 40%);
  border: 1px solid color-mix(in srgb, var(--student-200) 60%, white 40%);
}

.fraction-model__cell {
  min-height: 34px;
  border-radius: 10px;
  border: 1px solid color-mix(in srgb, var(--line-default) 70%, white 30%);
  background: color-mix(in srgb, white 80%, var(--bg-canvas-soft) 20%);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.75);
}

.fraction-model__cell.is-filled {
  background: color-mix(in srgb, var(--student-400) 70%, white 30%);
  border-color: color-mix(in srgb, var(--student-500) 74%, white 26%);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.24), 0 2px 6px rgba(92, 111, 221, 0.16);
}

.drag-label-bank {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.drag-label-chip {
  border: 1px solid color-mix(in srgb, var(--line-default) 74%, white 26%);
  border-radius: var(--radius-pill);
  padding: 10px 14px;
  background: var(--bg-panel);
  color: var(--text-strong);
}

.drag-label-chip.is-assigned { opacity: .55; }

.drag-label-chip.is-active {
  border-color: color-mix(in srgb, var(--student-500) 74%, white 26%);
  box-shadow: 0 0 0 3px rgba(93, 142, 247, .12);
}

.drag-label-slot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  padding: 12px 14px;
  border-radius: var(--radius-3);
  border: 1px dashed color-mix(in srgb, var(--student-300) 72%, white 28%);
  background: color-mix(in srgb, var(--student-100) 48%, white 52%);
}

.drag-label-slot strong { color: var(--text-strong); }

/* choice runner */
.runner-shell .runner-question-panel--choice .options-grid,
.runner-shell .runner-question-panel--shape-choice .options-grid,
.runner-shell .options-grid[data-option-grid] {
  gap: 16px;
}

.runner-shell .runner-question-panel--choice .option-chip--tile,
.runner-shell .runner-question-panel--choice .option-chip--single,
.runner-shell .runner-question-panel--shape-choice .option-chip--tile,
.runner-shell .runner-question-panel--shape-choice .option-chip--single {
  min-height: 80px;
  border: 2px solid var(--line-default);
  border-radius: 16px;
  background: var(--bg-panel);
  box-shadow: var(--surface-shadow-ui);
  transition: border-color .15s ease, transform .08s ease, background-color .15s ease;
}

.runner-shell .runner-question-panel--choice .option-chip--tile:hover,
.runner-shell .runner-question-panel--choice .option-chip--single:hover,
.runner-shell .runner-question-panel--shape-choice .option-chip--tile:hover,
.runner-shell .runner-question-panel--shape-choice .option-chip--single:hover {
  border-color: var(--brand-700);
}

.runner-shell .runner-question-panel--choice .option-chip--tile:active,
.runner-shell .runner-question-panel--choice .option-chip--single:active,
.runner-shell .runner-question-panel--shape-choice .option-chip--tile:active,
.runner-shell .runner-question-panel--shape-choice .option-chip--single:active {
  transform: scale(0.98);
}

.runner-shell .runner-question-panel--choice .option-chip--tile > span,
.runner-shell .runner-question-panel--choice .option-chip--single > span,
.runner-shell .runner-question-panel--shape-choice .option-chip--tile > span,
.runner-shell .runner-question-panel--shape-choice .option-chip--single > span {
  font-size: clamp(1.08rem, 1.8vw, 1.5rem);
  line-height: 1.2;
  padding: 14px 16px;
}

.runner-shell .runner-question-panel--choice .options-grid--wordy-choice .option-chip--tile > span,
.runner-shell .runner-question-panel--choice .options-grid--wordy-choice .option-chip--single > span,
.runner-shell .runner-question-panel--choice .option-chip--wordy > span {
  align-items: flex-start;
  padding-block: 16px;
}

.runner-shell .runner-question-panel--choice .runner-answer-panel,
.runner-shell .runner-question-panel--shape-choice .runner-answer-panel {
  padding-top: 12px;
}

.runner-shell .runner-question-panel--choice .options-grid,
.runner-shell .runner-question-panel--shape-choice .options-grid {
  grid-auto-rows: minmax(64px, auto);
}

.runner-shell .runner-question-panel--choice .option-chip--tile,
.runner-shell .runner-question-panel--choice .option-chip--single,
.runner-shell .runner-question-panel--shape-choice .option-chip--tile,
.runner-shell .runner-question-panel--shape-choice .option-chip--single {
  min-height: 64px;
  border-radius: 16px;
}

.runner-shell,
.runner-shell .runner-layout--single,
.runner-shell .runner-question-panel {
  min-height: 100%;
}

.runner-shell .runner-main,
.runner-shell .runner-question-panel {
  display: flex;
  flex-direction: column;
}

.student-page-content--runner .runner-layout--single {
  align-content: stretch;
}

.student-page-content--runner .runner-question-panel {
  min-height: calc(100dvh - 176px);
}

.runner-shell .runner-question-body {
  flex: 0 0 auto;
}

.runner-shell .runner-answer-panel {
  margin: auto 22px 0;
  padding-top: 12px;
}

.runner-shell .runner-answer-stack,
.runner-shell .runner-keyboard-wrap,
.runner-shell .runner-action-bar .button-row {
  width: min(100%, 1040px);
  margin-inline: auto;
}

.runner-shell .runner-question-panel--choice .runner-answer-stack,
.runner-shell .runner-question-panel--shape-choice .runner-answer-stack,
.runner-shell .runner-question-panel--choice .runner-action-bar .button-row,
.runner-shell .runner-question-panel--shape-choice .runner-action-bar .button-row {
  width: min(100%, 860px);
}

.runner-shell .runner-keyboard-wrap {
  padding-top: 10px;
}

.runner-shell .runner-keyboard {
  gap: 14px;
}

.runner-shell .runner-keyboard .btn {
  min-height: 64px;
  font-size: 1.18rem;
  font-weight: 800;
}

.runner-shell .runner-keyboard .btn[data-runner-key="enter"] {
  min-height: 68px;
  font-size: 1.26rem;
}

.runner-shell .runner-action-bar {
  margin-top: 14px;
  padding-top: 16px;
}

.runner-shell .runner-action-bar .button-row {
  justify-content: flex-start;
  align-items: center;
  gap: 10px;
}

.runner-shell .runner-question-panel--choice .options-grid,
.runner-shell .runner-question-panel--shape-choice .options-grid {
  width: 100%;
  justify-content: center;
  gap: 14px;
}

.runner-shell .runner-question-panel--choice .options-grid[data-option-grid],
.runner-shell .runner-question-panel--shape-choice .options-grid[data-option-grid] {
  grid-template-columns: repeat(var(--option-grid-cols, 3), minmax(var(--option-tile-width, 186px), var(--option-tile-width, 186px)));
  grid-auto-rows: minmax(var(--option-tile-height, 118px), auto);
}

.runner-shell .runner-question-panel--choice .option-chip--tile,
.runner-shell .runner-question-panel--choice .option-chip--single,
.runner-shell .runner-question-panel--shape-choice .option-chip--tile,
.runner-shell .runner-question-panel--shape-choice .option-chip--single {
  min-height: var(--option-tile-height, 118px);
  border-radius: 20px;
}

.runner-shell .runner-question-panel--choice .option-chip--tile > span,
.runner-shell .runner-question-panel--choice .option-chip--single > span,
.runner-shell .runner-question-panel--shape-choice .option-chip--tile > span,
.runner-shell .runner-question-panel--shape-choice .option-chip--single > span {
  display: grid;
  place-items: center;
  min-height: 100%;
  padding: 16px 14px;
  font-size: clamp(1.4rem, 2.2vw, 2rem);
  line-height: 1.1;
  font-weight: 800;
}

.runner-shell .runner-question-panel--choice .options-grid--wordy-choice .option-chip--tile > span,
.runner-shell .runner-question-panel--choice .options-grid--wordy-choice .option-chip--single > span,
.runner-shell .runner-question-panel--choice .option-chip--wordy > span {
  font-size: clamp(1rem, 1.5vw, 1.22rem);
  line-height: 1.3;
}

.runner-shell .runner-prompt {
  gap: 14px;
}

.runner-shell .runner-prompt__intro {
  font-size: clamp(1.18rem, 1.8vw, 1.65rem);
  line-height: 1.28;
  font-weight: 500;
  color: var(--text-strong);
}

.runner-shell .runner-prompt__context {
  font-size: clamp(1.24rem, 1.9vw, 1.75rem);
  line-height: 1.34;
  font-weight: 500;
}

.runner-shell .runner-prompt__main {
  max-width: 22ch;
  margin-inline: auto;
  font-size: clamp(2.45rem, 4.6vw, 4.6rem);
  line-height: 1.08;
  letter-spacing: -.03em;
}

.runner-question-card-v2 .runner-prompt__intro,
.runner-question-card-v2 .runner-prompt__main,
.runner-question-card-v2 .runner-prompt__main *,
.runner-question-card-v2 .runner-prompt--raw,
.runner-question-card-v2 .runner-prompt--raw p,
.runner-question-card-v2 .runner-prompt--raw span,
.runner-question-card-v2 .runner-prompt--raw strong,
.runner-question-card-v2 .runner-prompt--raw li,
.runner-question-card-v2 .runner-prompt--raw figcaption {
  color: var(--text-strong);
}

.runner-question-card-v2 .runner-prompt__context,
.runner-question-card-v2 .runner-prompt__detail,
.runner-question-card-v2 .runner-prompt--raw small,
.runner-question-card-v2 .runner-prompt--raw .muted {
  color: var(--text-body);
}

.runner-shell .runner-prompt--dense .runner-prompt__main {
  max-width: 24ch;
  font-size: clamp(2rem, 3.6vw, 3.2rem);
}

.runner-prompt--with-visual .runner-prompt__main,
.runner-prompt--chart .runner-prompt__main,
.runner-prompt--grid .runner-prompt__main,
.runner-prompt--number-line .runner-prompt__main,
.runner-prompt--probability .runner-prompt__main,
.runner-prompt--angle .runner-prompt__main,
.runner-shell .runner-prompt--fraction-model .runner-prompt__main {
  max-width: 24ch;
  font-size: clamp(2.05rem, 3vw, 3rem);
}

.runner-shell .runner-visual-panel,
.runner-shell .runner-visual-panel .visual-card {
  width: min(100%, 1140px);
  margin-inline: auto;
}

.visual-card--chart .visual-svg,
.visual-svg--chart,
.visual-card--line-graph .visual-svg--chart {
  width: min(100%, 1020px);
  max-width: 1020px;
}

.visual-card--number-line .visual-svg--number-line,
.visual-card--probability-scale .visual-svg--probability-scale,
.visual-card--fraction-model .visual-svg--fraction-model {
  width: min(100%, 980px);
  max-width: 980px;
}

.visual-card--grid .visual-svg--grid {
  width: min(100%, 920px);
  max-width: 920px;
}

.visual-card--angle .visual-svg--angle {
  width: min(100%, 760px);
  max-width: 760px;
}

.visual-card--clock .visual-svg {
  width: min(100%, 560px);
  max-width: 560px;
}

.visual-axis,
.visual-number-line-track,
.visual-number-line-tick,
.visual-axis--probability,
.visual-axis--x-strong,
.visual-axis--y-strong {
  stroke-width: 3.6;
}

.visual-grid-line {
  stroke-width: 2.1;
}

.visual-number-line-track {
  stroke-width: 4.2;
}

.visual-number-line-tick {
  stroke-width: 3.2;
}

.visual-axis-label,
.visual-value-label,
.visual-axis-caption,
.visual-axis-label--probability,
.visual-axis-label--x,
.visual-axis-label--compact {
  font-size: 15px;
  font-weight: 800;
}

.visual-axis-label--probability,
.visual-axis-label--x {
  font-size: 1.08rem;
}

.visual-axis-caption {
  font-size: 14px;
}

.visual-line {
  stroke-width: 4.8;
}


body.runner-fullscreen-mode .runner-shell {
  display: grid !important;
  gap: 18px !important;
  padding: 18px 20px 22px !important;
  align-content: start !important;
  min-height: 100dvh !important;
}

body.runner-fullscreen-mode .runner-layout--single,
body.runner-fullscreen-mode .runner-question-panel,
body.runner-fullscreen-mode .runner-status-bar {
  width: min(100%, 1480px);
  max-width: 1480px;
  margin-inline: auto;
}

body.runner-fullscreen-mode .runner-question-panel {
  min-height: calc(100dvh - 138px);
}

body.runner-fullscreen-mode .runner-question-body--focus {
  padding-top: 12px;
}

body.runner-fullscreen-mode .runner-shell .runner-prompt__main {
  font-size: clamp(3rem, 6vw, 6rem);
  max-width: 24ch;
}

body.runner-fullscreen-mode .runner-fullscreen-close {
  display: grid !important;
}

/* fullscreen / focus modes */
.runner-focus-mode .student-topbar,
.runner-focus-mode .student-side-nav {
  display: none;
}

.runner-focus-mode .student-shell__body {
  grid-template-columns: 1fr;
  width: min(980px, calc(100vw - 20px));
}

.runner-fullscreen-close {
  display: none;
  position: absolute;
  top: 14px;
  right: 16px;
  z-index: 2;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line-default);
  border-radius: 999px;
  background: color-mix(in srgb, var(--bg-panel) 96%, white 4%);
  color: var(--text-strong);
  box-shadow: var(--surface-shadow-ui);
}

body.runner-fullscreen-mode .student-topbar,
body.runner-fullscreen-mode .student-side-nav,
body.runner-fullscreen-mode .mp-topbar,
body.runner-fullscreen-mode .public-header,
body.runner-fullscreen-mode .app-topbar {
  display: none !important;
}

body.runner-fullscreen-mode .student-shell,
body.runner-fullscreen-mode .student-shell__body,
body.runner-fullscreen-mode .student-page-content,
body.runner-fullscreen-mode .student-page-content--runner,
body.runner-fullscreen-mode .runner-shell {
  width: 100vw;
  max-width: none;
  margin: 0;
}

body.runner-fullscreen-mode .runner-shell {
  position: fixed;
  inset: 0;
  z-index: 999;
  overflow: hidden;
  padding: 24px;
  background: linear-gradient(180deg, var(--bg-page) 0%, var(--bg-soft) 100%);
}

body.runner-fullscreen-mode .runner-layout--single,
body.runner-fullscreen-mode .runner-status-bar,
body.runner-fullscreen-mode .runner-question-panel {
  width: calc(100vw - 32px);
  max-width: calc(100vw - 32px);
  margin-inline: auto;
}

body.runner-fullscreen-mode .runner-footer {
  position: sticky;
  bottom: 0;
  background: inherit;
}

.runner-countdown-overlay {
  position: fixed;
  inset: 0;
  z-index: 1200;
  display: grid;
  place-items: center;
  background: rgba(11, 19, 35, 0.28);
  backdrop-filter: blur(8px);
}

.runner-countdown-overlay__inner {
  min-width: 280px;
  padding: 34px 38px;
  border-radius: 30px;
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 98%, white 2%), color-mix(in srgb, var(--bg-panel-2) 92%, white 8%));
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.runner-countdown-overlay__label {
  margin-bottom: 12px;
  color: var(--text-soft);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.runner-countdown-overlay__value {
  color: var(--text-strong);
  font-size: clamp(4rem, 10vw, 7rem);
  line-height: 1;
  font-weight: 800;
  letter-spacing: -.03em;
}

/* ==========================================================================
   15. PUBLIC / APP / STUDENT SPECIALS
   ========================================================================== */

.public-nav-right,
.utility-strip__links {
  flex-wrap: wrap;
}

.public-footer-brand {
  gap: var(--space-3);
}

.public-header__nav {
  justify-content: flex-start;
}

.public-nav-right .btn.ghost,
.public-header .nav-pill {
  background: var(--bg-interactive);
  color: var(--text-strong);
  border-color: var(--line-default);
  box-shadow: none;
}

.public-nav-right .btn.ghost:hover,
.public-header .nav-pill:hover {
  background: var(--bg-hover);
}

.app-topbar .brand-copy strong,
.app-topbar__scope strong {
  color: var(--text-strong);
}

.app-topbar .brand-copy span,
.app-topbar .eyebrow,
.app-topbar .muted,
.app-topbar .small {
  color: var(--text-body);
}

.app-topbar .btn.secondary,
.app-topbar .btn.ghost {
  background: var(--bg-interactive);
  color: var(--text-strong);
  border-color: var(--line-default);
  box-shadow: var(--shadow-sm);
}

.app-topbar__scope {
  display: grid;
  justify-items: start;
  gap: 2px;
  min-width: 220px;
}

.app-topbar__actions {
  justify-content: flex-end;
}

.app-page-bar {
  justify-content: space-between;
  min-height: 40px;
  padding: 2px 2px 0;
  flex-wrap: wrap;
}

.app-breadcrumbs {
  flex-wrap: wrap;
  min-width: 0;
}

.app-breadcrumbs__item.is-current {
  color: var(--text-strong);
  font-weight: 700;
}

.app-page-bar__meta {
  flex-wrap: wrap;
  justify-content: flex-end;
}

.app-page-bar__meta .mini-badge {
  min-height: 30px;
  padding: 4px 10px;
  box-shadow: none;
}

.student-topbar .nav-pill {
  min-height: 38px;
  padding: 8px 14px;
  font-size: .94rem;
  white-space: nowrap;
}

.student-topbar .nav-pill.is-active {
  background: linear-gradient(135deg, var(--student-500), var(--student-700));
  color: #fff;
  box-shadow: 0 14px 24px rgba(93,142,247,.20);
}

.student-primary-nav {
  flex-wrap: nowrap;
  justify-content: flex-start;
  overflow-x: auto;
  padding-bottom: 2px;
  scrollbar-width: none;
}

.student-primary-nav::-webkit-scrollbar { display: none; }

.student-topbar__actions {
  flex-wrap: nowrap;
}

.student-topbar__actions .btn {
  min-height: 36px;
  padding-inline: 12px;
  white-space: nowrap;
}

.student-side-nav__title {
  font-size: .78rem;
}

.student-side-nav__link.is-active,
.student-side-nav__link:hover {
  background: var(--bg-selected);
  color: var(--text-strong);
}

.student-card--compact {
  min-height: 0;
  padding: 16px 18px;
}

.student-card--compact h3 {
  font-size: clamp(1.28rem, 2vw, 1.5rem);
  line-height: 1.22;
}

.student-guided-practice .data-item {
  grid-template-columns: minmax(0, 1fr) 190px;
  align-items: center;
}

.student-guided-practice .data-item .btn {
  width: 100%;
}

.student-live-card .section-header,
.student-live-card > div {
  max-width: 46rem;
}

.student-more-options {
  margin-top: 12px;
  border-top: 1px solid var(--line-subtle);
  padding-top: 14px;
}

.student-more-options > summary {
  list-style: none;
  cursor: pointer;
}

/* disclosures */
.student-card .sats-licence-disclosure {
  border: 1px solid var(--line-default);
  border-radius: var(--radius-3);
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 98%, white 2%), color-mix(in srgb, var(--bg-panel-2) 94%, white 6%));
}

.student-card .sats-licence-disclosure summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 16px;
  font-weight: 780;
  color: inherit;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.student-card .sats-licence-disclosure summary::-webkit-details-marker,
.student-card .sats-licence-disclosure summary::marker {
  display: none;
  content: "";
}

.student-card .sats-licence-disclosure summary::after {
  content: "⌄";
  opacity: .72;
  transition: transform .18s ease;
}

.student-card .sats-licence-disclosure[open] summary::after {
  transform: rotate(180deg);
}

.student-card .sats-licence-disclosure__body {
  padding: 0 16px 16px;
  display: grid;
  gap: 10px;
}

/* ==========================================================================
   16. MENUS / MODAL / TOAST / MOBILE
   ========================================================================== */

.signin-menu,
.mp-language-menu,
.mp-profile-menu {
  position: relative;
}

.signin-menu summary,
.mp-language-menu summary,
.mp-profile-trigger {
  list-style: none;
  cursor: pointer;
}

.signin-menu__panel,
.mp-language-menu__panel,
.mp-profile-menu__panel {
  position: absolute;
  right: 0;
  top: calc(100% + 10px);
  min-width: 220px;
  padding: 10px;
  border-radius: 16px;
  border: 1px solid var(--line-default);
  background: color-mix(in srgb, var(--bg-elevated) 96%, transparent);
  box-shadow: var(--shadow-md);
  display: grid;
  gap: 6px;
  z-index: 80;
}

.mp-language-menu__panel {
  min-width: 152px;
  padding: 8px;
  gap: 4px;
}

.signin-menu:not([open]) .signin-menu__panel,
.mp-language-menu:not([open]) .mp-language-menu__panel,
.mp-profile-menu:not([open]) .mp-profile-menu__panel {
  display: none;
}

.signin-menu__panel a,
.mp-language-menu__item,
.mp-profile-menu__item {
  padding: 10px 12px;
  border-radius: 12px;
  color: var(--text-strong);
  font-weight: 700;
  background: transparent;
  border: 0;
  text-align: left;
  width: 100%;
}

.signin-menu__panel a:hover,
.mp-language-menu__item:hover,
.mp-language-menu__item.is-active,
.mp-profile-menu__item:hover {
  background: var(--bg-hover);
}

.mp-profile-trigger__avatar {
  width: 46px;
  height: 46px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: var(--text-strong);
  color: var(--bg-page);
  font-weight: 800;
  font-size: .98rem;
}

.modal-layer {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 18px;
  background: rgba(16,34,53,.28);
  backdrop-filter: blur(4px);
  z-index: 90;
}

.modal-card {
  width: min(740px, 100%);
  max-height: min(90vh, 860px);
  overflow: auto;
}

.toast-layer {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 100;
  display: grid;
  gap: 10px;
}

.toast {
  min-width: 280px;
  max-width: 380px;
  padding: 14px 16px;
  border-radius: 16px;
}

.toast[data-kind="success"] { background: var(--success-100); }
.toast[data-kind="warning"] { background: var(--warning-100); }
.toast[data-kind="error"] { background: var(--danger-100); }

.mobile-nav {
  display: none;
  position: sticky;
  bottom: 10px;
  z-index: 50;
  width: min(880px, calc(100vw - 20px));
  margin: 0 auto;
  padding: 8px;
}

.mobile-nav__row {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
}

.mobile-nav a {
  display: grid;
  place-items: center;
  min-height: 44px;
  padding: 8px;
  border-radius: 14px;
  text-align: center;
  font-size: 12px;
  font-weight: 700;
}

.mobile-nav a.is-active {
  background: var(--bg-selected);
}

.drawer-toggle {
  display: none;
}

/* command palette */
.mp-command {
  width: min(100%, 540px);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  min-height: 46px;
  border-radius: var(--radius-pill);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.18);
}

.mp-command span {
  flex: 1;
  text-align: left;
}

.mp-command kbd,
.mp-command-palette__item kbd {
  border: 1px solid var(--line-default);
  border-radius: var(--radius-pill);
  padding: 4px 8px;
  font: inherit;
  font-size: .82rem;
  color: var(--text-body);
  background: color-mix(in srgb, var(--bg-panel) 82%, transparent);
}

.mp-command-palette[hidden] {
  display: none;
}

.mp-command-palette {
  position: fixed;
  inset: 0;
  z-index: 3000;
}

.mp-command-palette__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(7,12,24,.48);
  backdrop-filter: blur(6px);
}

.mp-command-palette__dialog {
  position: relative;
  width: min(680px, calc(100vw - 24px));
  margin: 10vh auto 0;
  border-radius: 24px;
  border: 1px solid var(--line-default);
  background: color-mix(in srgb, var(--bg-elevated) 95%, transparent);
  box-shadow: 0 24px 60px rgba(9,16,31,.28);
  overflow: hidden;
}

.mp-command-palette__head {
  padding: 16px;
  border-bottom: 1px solid var(--line-default);
}

.mp-command-palette__input {
  min-height: 54px;
  padding: 0 16px;
}

.mp-command-palette__results {
  display: grid;
  gap: 8px;
  padding: 12px;
  max-height: 56vh;
  overflow: auto;
}

.mp-command-palette__item {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid transparent;
  text-align: left;
  background: transparent;
  color: var(--text-strong);
  font: inherit;
  font-weight: 700;
}

.mp-command-palette__item:hover {
  background: var(--bg-hover);
  border-color: var(--line-default);
}

.mp-command-palette__empty {
  padding: 16px;
  color: var(--text-body);
}

/* ==========================================================================
   17. RESPONSIVE
   ========================================================================== */

@media (max-width: 1180px) {
  .hero,
  .layout-split,
  .layout-split--balanced,
  .dashboard-grid,
  .auth-split,
  .workspace-hero,
  .homepage-hero,
  .student-auth-split,
  .staff-wire-grid,
  .class-card__body,
  .runner-layout,
  .people-top-grid,
  .learning-plan-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .app-shell {
    grid-template-columns: 1fr;
  }

  .app-sidebar,
  .runner-side-panel {
    position: static;
  }

  .homepage-journey-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .student-shell__body,
  .student-shell__body--with-nav,
  .student-shell__body.student-nav-collapsed,
  .student-shell__body--with-nav.student-nav-collapsed {
    grid-template-columns: 1fr;
  }

  .student-side-nav,
  .student-shell__body.student-nav-collapsed .student-side-nav,
  .student-shell__body--with-nav.student-nav-collapsed .student-side-nav {
    width: 100%;
  }
}

@media (max-width: 1100px) {
  .stats-grid,
  .workspace-kpis,
  .pricing-grid,
  .steps-grid,
  .metric-grid,
  .compact-kpis {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .filter-bar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .card-grid.four {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 1024px) {
  .journey-grid,
  .trust-grid {
    grid-template-columns: 1fr 1fr;
  }

  .homepage-feature-grid,
  .homepage-journey-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 980px) {
  .student-home-grid,
  .student-quick-grid,
  .school-overview-grid,
  .student-stat-grid,
  .people-top-grid,
  .learning-plan-grid {
    grid-template-columns: 1fr;
  }

  .student-guided-practice .data-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .button-row--equal {
    justify-content: flex-start;
  }

  .button-row--equal > .btn,
  .button-row--equal > a,
  .button-row--equal > button {
    min-width: 0;
  }

  .data-item .button-row {
    justify-content: flex-start;
  }
}

@media (max-width: 960px) {
  .student-page-content--runner {
    min-height: auto;
  }

  .student-page-content--runner .runner-shell-v2 {
    min-height: auto;
    height: auto;
    max-height: none;
    width: min(100%, 1120px);
    padding-inline: 12px;
    overflow: visible;
  }

  .runner-status-v2 {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .runner-header-v2__right,
  .runner-status-v2__right {
    justify-content: flex-start;
  }

  .runner-stage-v2,
  .runner-shell-v2[data-session-kind="competition"] .runner-stage-v2 {
    grid-template-columns: 1fr;
  }

  .runner-side-rail-v2 {
    position: static;
    grid-template-rows: none;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
    overflow: visible;
  }

  .runner-side-rail-v2[data-has-tools-card="false"] {
    grid-template-columns: 1fr;
  }

  .runner-rail-card-v2--keyboard,
  .runner-rail-card-v2--tools-placeholder {
    min-height: 0;
  }

  .student-page-content--runner .runner-shell,
  .student-page-content--runner .runner-shell .runner-question-panel {
    min-height: auto;
  }

  .runner-shell .runner-question-panel--choice .options-grid,
  .runner-shell .runner-question-panel--shape-choice .options-grid {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  }

  .route-journey {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .runner-side-rail-v2 {
    grid-template-columns: 1fr;
  }

  .runner-rail-copy-v2 {
    max-width: none;
  }

  .runner-question-card-v2 .runner-prompt__main {
    max-width: 100%;
  }

  .public-header__inner,
  .app-topbar__inner,
  .student-topbar__inner,
  .mp-topbar__inner {
    grid-template-columns: 1fr;
  }

  .app-topbar__actions,
  .student-topbar__actions,
  .public-nav-right {
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .app-page-bar,
  .app-page-bar__meta {
    justify-content: flex-start;
  }

  .mp-topbar__right {
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }

  .mobile-nav {
    display: block;
  }

  .auth-tabs {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .runner-question-card-v2 {
    padding: 16px;
  }

  .runner-question-card-v2.runner-question-panel--choice .options-grid[data-option-grid],
  .runner-question-card-v2.runner-question-panel--shape-choice .options-grid[data-option-grid] {
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  }

  :root {
    --site-gutter: 10px;
  }

  .workspace-kpis,
  .feature-grid,
  .journey-grid,
  .trust-grid,
  .pricing-grid,
  .steps-grid,
  .metric-grid,
  .compact-kpis {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .student-illustration-card {
    grid-template-columns: 1fr;
  }

  .appearance-options {
    grid-template-columns: 1fr;
  }

  .utility-strip__inner {
    flex-direction: column;
    justify-content: center;
    padding: 8px 0;
  }
}

@media (max-width: 820px) {
  .preview-grid,
  .card-grid.three,
  .card-grid.two,
  .card-grid.four,
  .multi-field-grid.two,
  .multi-field-grid.three,
  .filter-bar,
  .filter-bar--wide,
  .filter-bar--curriculum {
    grid-template-columns: 1fr;
  }

  .runner-question-head,
  .runner-question-body,
  .runner-shell .runner-action-bar {
    padding-left: 18px;
    padding-right: 18px;
  }

  .runner-shell .runner-answer-panel {
    margin: 16px 16px 0;
    padding: 18px;
  }

  .header-action-stack {
    width: 100%;
    justify-content: flex-start;
  }
}

@media (max-width: 760px) {
  .drawer-toggle {
    display: inline-flex;
  }

  body.drawer-open {
    overflow: hidden;
  }

  .app-sidebar {
    position: fixed;
    inset: calc(var(--header-height) + 4px) 16px 16px 16px;
    z-index: 65;
    background: var(--bg-panel);
    padding: 14px;
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
    transform: translateY(12px);
    opacity: 0;
    pointer-events: none;
    transition: .22s ease;
    overflow: auto;
  }

  body.drawer-open .app-sidebar {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  body.drawer-open .app-content {
    filter: blur(1px);
  }

  .sidebar-link__icon {
    display: none;
  }

  .app-content {
    padding: 16px;
    border-radius: 24px;
  }
}

@media (max-width: 720px) {
  .mp-topbar__right--signed-out {
    width: 100%;
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .mp-public-auth-actions {
    width: 100%;
    justify-content: stretch;
  }

  .mp-inline-link--button {
    flex: 1 1 0;
  }
}

@media (max-width: 640px) {
  .hero-copy,
  .hero-preview,
  .card,
  .summary-card,
  .student-card,
  .runner-main,
  .login-card,
  .homepage-card,
  .homepage-journey-card {
    padding: 18px;
  }

  .hero-copy h1 {
    font-size: 2.2rem;
  }

  .pill-nav {
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 2px;
  }

  .toast-layer {
    left: 10px;
    right: 10px;
  }

  .toast {
    min-width: 0;
    max-width: none;
  }

  .topbar-brand-image {
    height: 44px;
  }
}

@media (max-width: 900px) {
  .runner-prompt__main,
  .runner-prompt--wordy .runner-prompt__main,
  .runner-prompt--with-visual .runner-prompt__main,
  .runner-prompt--dense .runner-prompt__main,
  .runner-prompt--chart .runner-prompt__main,
  .runner-prompt--grid .runner-prompt__main,
  .runner-prompt--number-line .runner-prompt__main,
  .runner-prompt--probability .runner-prompt__main,
  .runner-prompt--angle .runner-prompt__main,
  .runner-question-panel--choice .runner-prompt__main,
  .runner-shell .runner-prompt--compact-flow .runner-prompt__main {
    max-width: none;
    font-size: clamp(1.32rem, 5vw, 1.9rem);
  }

  .runner-shell .runner-prompt--fraction-expression .runner-prompt__main {
    white-space: normal;
  }

  .options-grid--cols-5,
  .options-grid[data-option-grid="2x5"],
  .options-grid[data-option-grid="3x5"] {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ==========================================================================
   18. PRINT
   ========================================================================== */

@media print {
  .public-header,
  .app-topbar,
  .student-topbar,
  .app-sidebar,
  .button-row,
  .mobile-nav,
  .toast-layer,
  .modal-layer,
  .print-hide,
  .skip-link {
    display: none !important;
  }

  body {
    background: #fff !important;
  }

  .app-shell,
  .public-shell,
  .student-shell,
  .page-shell,
  .student-shell__body,
  .app-content {
    width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  .card,
  .student-card,
  .sidebar-panel,
  .workspace-hero {
    box-shadow: none !important;
    border: 1px solid #ccc !important;
    break-inside: avoid;
  }
}

/* ==========================================================================
   19. MIGRATION NOTES
   --------------------------------------------------------------------------
   - Replace old color overrides with token changes only.
   - Keep component classes semantic:
       .btn.primary / .btn.secondary / .btn.ghost / .btn.danger
       must never share the same visual definition.
   - Never add global text-color override blocks like:
       :where(.card, .table-wrap, ...) { color: ... !important; }
   - For portal-specific looks, override only tokens on body.portal-*
   - For themes, override only tokens on html[data-appearance]
   - For special runner variants, prefer modifier classes on the runner block
   - Avoid !important except for intentional emergency print/fullscreen behavior
   ========================================================================== */


/* ==========================================================================
   20. V18.7.35 RUNTIME SUPPLEMENT
   --------------------------------------------------------------------------
   Minimal bridge layer for selectors used by the current JS runtime but not
   yet covered by the unified design-system base.
   ========================================================================== */

/* global shell helpers */
.mp-topbar {
  position: sticky;
  top: 0;
  z-index: 80;
  margin: 0;
  padding: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
  backdrop-filter: none;
}

#appRoot > .mp-topbar:first-child,
body > .mp-topbar:first-child,
.student-shell > .mp-topbar:first-child {
  margin-top: 0;
}

.mp-topbar__inner {
  width: var(--site-width);
  min-height: var(--header-height);
  margin: 0 auto;
  padding: 0 clamp(16px, 2vw, 24px);
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  column-gap: clamp(16px, 2vw, 28px);
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--bg-elevated) 98%, white 2%),
    color-mix(in srgb, var(--bg-panel) 96%, white 4%)
  );
  border: 1px solid var(--line-default);
  border-top: 0;
  border-radius: 0 0 24px 24px;
  box-shadow: none;
  transform: translateY(-1px);
}

html[data-appearance="dark"] .mp-topbar__inner,
html[data-theme="dark"] .mp-topbar__inner,
body.theme-dark .mp-topbar__inner {
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--bg-elevated) 96%, black 4%),
    color-mix(in srgb, var(--bg-panel) 94%, black 6%)
  );
}

.student-shell > .mp-topbar:first-child .mp-topbar__inner {
  transform: translateY(0);
}

.mp-topbar__center,
.mp-topbar__left,
.mp-topbar__right {
  min-width: 0;
}

.mp-topbar__left {
  align-self: stretch;
  display: flex;
  align-items: center;
}

.mp-topbar__center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.mp-topbar__center:empty {
  display: block;
}

.mp-topbar__brand {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  align-self: stretch;
  min-width: 0;
  height: 100%;
  padding: 0;
  margin: 0;
}

.topbar-brand-image,
.mp-topbar__brand img {
  display: block;
  width: auto;
  height: calc(var(--header-height) - 8px);
  max-height: calc(var(--header-height) - 8px);
  object-fit: contain;
  object-position: left center;
}

html[data-appearance="dark"] .topbar-brand-image,
html[data-theme="dark"] .topbar-brand-image,
body.theme-dark .topbar-brand-image {
  filter: drop-shadow(0 0 0 rgba(0,0,0,0));
}

.mp-topbar__right,
.mp-topbar__utility-pill,
.mp-tool-group,
.mp-public-auth-actions,
.mp-language-menu,
.mp-profile-menu,
.mp-profile-trigger {
  display: flex;
  align-items: center;
}

.mp-topbar__right {
  justify-self: end;
  justify-content: flex-end;
  align-self: stretch;
  min-height: 100%;
  gap: clamp(12px, 1.4vw, 18px);
  flex-wrap: nowrap;
}

.mp-topbar__utility-pill,
.mp-tool-group,
.mp-public-auth-actions {
  min-height: 100%;
  gap: clamp(10px, 1.1vw, 16px);
  padding: 0;
  margin: 0;
  background: transparent;
  border: 0;
  box-shadow: none;
}

.mp-public-auth-actions {
  justify-content: flex-end;
}

.mp-command {
  min-height: 44px;
  margin: 0;
}

.mp-language-menu,
.mp-profile-menu {
  position: relative;
}

.mp-language-menu summary,
.mp-topbar__control,
.mp-inline-link--button,
.mp-profile-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: center;
  min-height: 48px;
  padding: 0 6px;
  margin: 0;
  line-height: 1;
  vertical-align: middle;
  white-space: nowrap;
  background: transparent;
  border: 0;
  box-shadow: none;
  text-decoration: none;
}

.mp-language-menu summary,
.mp-topbar__control,
.mp-inline-link--button {
  color: var(--text-strong);
  font-size: 1.14rem;
  font-weight: 800;
  letter-spacing: 0;
}

.mp-inline-link--button,
.mp-profile-trigger {
  padding-inline: 0;
}

.mp-language-menu summary:hover,
.mp-language-menu summary:focus-visible,
.mp-topbar__control:hover,
.mp-topbar__control:focus-visible,
.mp-inline-link--button:hover,
.mp-inline-link--button:focus-visible,
.mp-profile-trigger:hover,
.mp-profile-trigger:focus-visible {
  background: transparent;
  border: 0;
  box-shadow: none;
  color: var(--brand-700);
  outline: none;
}

.mp-topbar__control svg,
.mp-topbar__control .mp-icon {
  width: 1.28rem;
  height: 1.28rem;
}

.mp-topbar__right--signed-out {
  gap: clamp(12px, 1.4vw, 18px);
}

@media (max-width: 1180px) {
  .mp-topbar__inner {
    padding-inline: 16px;
    column-gap: 16px;
  }

  .topbar-brand-image,
  .mp-topbar__brand img {
    height: calc(var(--header-height) - 12px);
    max-height: calc(var(--header-height) - 12px);
  }

  .mp-language-menu summary,
  .mp-topbar__control,
  .mp-inline-link--button {
    font-size: 1.06rem;
  }
}

@media (max-width: 980px) {
  .mp-topbar__right {
    gap: 10px;
  }

  .mp-topbar__utility-pill,
  .mp-tool-group,
  .mp-public-auth-actions {
    gap: 10px;
  }

  .mp-language-menu summary,
  .mp-topbar__control,
  .mp-inline-link--button,
  .mp-profile-trigger {
    min-height: 44px;
  }

  .mp-profile-trigger__avatar {
    width: 42px;
    height: 42px;
  }
}

.mp-icon {
  width: 1.1rem;
  height: 1.1rem;
  flex: 0 0 auto;
}

.mp-icon--theme {
  width: 1.15rem;
  height: 1.15rem;
}

.mp-inline-link {
  color: var(--text-body);
  font-weight: 700;
}

.mp-inline-link--strong {
  color: var(--text-strong);
}

.mp-public-auth-actions .mp-inline-link--strong {
  min-height: 44px;
  padding-inline: 14px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--brand-500) 20%, var(--line-default) 80%);
  background: linear-gradient(180deg, color-mix(in srgb, var(--brand-100) 34%, white 66%), color-mix(in srgb, var(--bg-panel) 96%, white 4%));
  box-shadow: var(--shadow-sm);
}

.mp-public-auth-actions .mp-inline-link--strong:hover,
.mp-public-auth-actions .mp-inline-link--strong:focus-visible {
  color: var(--brand-700);
  border-color: color-mix(in srgb, var(--brand-500) 32%, var(--line-default) 68%);
  background: linear-gradient(180deg, color-mix(in srgb, var(--brand-100) 42%, white 58%), color-mix(in srgb, var(--bg-panel) 94%, white 6%));
}

html[data-appearance="dark"] .mp-public-auth-actions .mp-inline-link--strong,
html[data-theme="dark"] .mp-public-auth-actions .mp-inline-link--strong,
body.theme-dark .mp-public-auth-actions .mp-inline-link--strong {
  background: linear-gradient(180deg, color-mix(in srgb, var(--brand-100) 26%, transparent), color-mix(in srgb, var(--bg-panel) 90%, black 10%));
}

.mp-profile-menu__label {
  padding: 10px 12px 8px;
  font-weight: 800;
  color: var(--text-strong);
  border-bottom: 1px solid var(--line-subtle);
  margin-bottom: 2px;
}

.mp-profile-menu__item--danger {
  color: var(--danger-700);
}

.mp-profile-menu__item--danger:hover {
  background: color-mix(in srgb, var(--danger-100) 76%, var(--bg-panel) 24%);
}

/* public landing */
.homepage-feature-grid--landing,
.homepage-journey-grid--landing {
  align-items: stretch;
}

.homepage-section--landing {
  gap: var(--space-5);
}

.homepage-section--landing .homepage-section__title {
  margin-top: 2px;
}

.price-card--featured {
  position: relative;
  border-color: color-mix(in srgb, var(--brand-600) 22%, var(--line-default) 78%);
  background: linear-gradient(180deg, color-mix(in srgb, var(--brand-100) 18%, var(--bg-panel) 82%), color-mix(in srgb, var(--bg-panel) 96%, white 4%));
  box-shadow: var(--shadow-md);
}

.price-card--featured::before {
  content: "Popular";
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 6px 10px;
  border-radius: var(--radius-pill);
  background: color-mix(in srgb, #dbc28d 70%, white 30%);
  color: #28301b;
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: .04em;
}

.auth-split--premium .auth-panel,
.auth-split--premium .auth-aside {
  min-height: 520px;
}

/* sidebar / adult workspace */
.sidebar-panel--footer {
  display: grid;
  gap: var(--space-3);
}

.dashboard-kpi-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.form-grid-tight,
.assignment-form-grid {
  gap: var(--space-3);
}

.people-create-card,
.people-credentials-card,
.people-list-card,
.assignment-builder-card,
.curriculum-table-wrap,
.staff-wire-grid__form,
.staff-wire-grid__table {
  min-width: 0;
}

.quick-action-row--compact {
  width: min(340px, 100%);
}

.stack-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.table-wrap--compact table th,
.table-wrap--compact table td {
  padding-top: 11px;
  padding-bottom: 11px;
}

.table-wrap--wide {
  overflow-x: auto;
}

.curriculum-table th:nth-child(2),
.curriculum-table td:nth-child(2) {
  width: 88px;
  text-align: center;
}

.recommendation-grid--spacious {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.intervention-card {
  border-color: color-mix(in srgb, var(--warning-700) 22%, var(--line-default) 78%);
  background: linear-gradient(180deg, color-mix(in srgb, var(--warning-100) 36%, var(--bg-panel) 64%), color-mix(in srgb, var(--bg-panel) 96%, white 4%));
}

.timeline {
  position: relative;
  display: grid;
  gap: var(--space-3);
}

.timeline::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: color-mix(in srgb, var(--brand-500) 24%, transparent);
}

.timeline-item {
  position: relative;
  display: grid;
  gap: 4px;
  padding: 14px 16px 14px 42px;
  border-radius: var(--radius-3);
  border: 1px solid var(--line-default);
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 98%, white 2%), color-mix(in srgb, var(--bg-panel-2) 94%, white 6%));
  box-shadow: var(--shadow-sm);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 18px;
  width: 14px;
  height: 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--brand-700), var(--brand-500));
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--bg-panel) 88%, transparent);
}

.trend-bars {
  display: flex;
  gap: 12px;
  align-items: flex-end;
  min-height: 180px;
  padding: 8px 0;
}

.trend-bars__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
  min-width: 48px;
}

.trend-bars__item strong,
.trend-bars__item small {
  color: var(--text-body);
}

.trend-bars__value {
  display: block;
  width: 24px;
  min-height: 12px;
  border-radius: 999px 999px 6px 6px;
  background: linear-gradient(180deg, var(--student-500), var(--student-700));
}

/* student runtime */
.student-auth-points {
  display: grid;
  gap: var(--space-3);
}

.student-auth-points > div {
  display: grid;
  gap: 4px;
  padding-top: var(--space-3);
  border-top: 1px solid var(--line-subtle);
}

.student-auth-points > div:first-child {
  padding-top: 0;
  border-top: 0;
}

.student-summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-4);
  align-items: center;
}

.student-completion-card {
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 96%, white 4%), color-mix(in srgb, var(--student-100) 20%, var(--bg-panel-2) 80%));
}

/* explicit choice grids + runner hints */
.options-grid--explicit {
  grid-auto-flow: row;
  align-items: stretch;
}

.options-grid--explicit .option-chip--tile,
.options-grid--explicit .option-chip--single {
  min-height: 82px;
}

.options-grid--compact-choice {
  grid-auto-rows: minmax(68px, auto);
}

.options-grid--symbol-row {
  gap: var(--space-4);
}

.runner-hint {
  width: min(100%, 760px);
  margin-inline: auto;
  padding: 18px;
  border-radius: var(--radius-3);
  border: 1px solid color-mix(in srgb, var(--brand-600) 18%, var(--line-default) 82%);
  background: linear-gradient(180deg, color-mix(in srgb, var(--brand-100) 44%, var(--bg-panel) 56%), color-mix(in srgb, var(--bg-panel) 96%, white 4%));
  color: var(--text-strong);
  line-height: 1.65;
}


.runner-hint-summary,
.runner-worked-summary,
.runner-visual-explanation {
  margin: 0;
  color: var(--text-default);
}

.runner-hint-ladder,
.runner-teaching-points {
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 8px;
}

.runner-hint-step-label {
  display: inline-block;
  margin-bottom: 4px;
  font-size: .74rem;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.runner-watch-out {
  display: grid;
  gap: 6px;
  padding: 10px 12px;
  border-radius: var(--radius-2);
  border: 1px solid color-mix(in srgb, var(--warning-600) 18%, var(--line-default) 82%);
  background: color-mix(in srgb, var(--warning-50) 72%, var(--bg-panel) 28%);
}

.runner-watch-out p {
  margin: 0;
}

.runner-shell .runner-prompt--compact .runner-prompt__main {
  max-width: 18ch;
  font-size: clamp(1.55rem, 3.1vw, 2.55rem);
}

.runner-prompt--table .runner-prompt__main,
.runner-shell .runner-prompt--visual-compact .runner-prompt__main {
  max-width: 34ch;
  font-size: clamp(1.55rem, 2.6vw, 2.35rem);
}

.runner-shell .runner-prompt--single-line-preferred .runner-prompt__main {
  max-width: 38ch;
  text-wrap: unset;
}

/* visuals */
.visual-card__title {
  font-size: .95rem;
  font-weight: 800;
  color: var(--text-strong);
}

.visual-card--chart,
.visual-card--grid,
.visual-card--number-line,
.visual-card--fraction-model,
.visual-card--probability-scale,
.visual-card--angle,
.visual-card--clock,
.visual-card--table,
.visual-card--line-graph {
  justify-items: center;
}

.visual-card--chart {
  overflow-x: auto;
}

.visual-card--chart .visual-svg,
.visual-svg--chart {
  width: min(100%, 820px);
  max-width: 820px;
  height: auto;
  display: block;
  margin-inline: auto;
}

.visual-card--line-graph .visual-svg--chart {
  width: min(100%, 900px);
  max-width: 900px;
}

.visual-card--number-line .visual-svg--number-line,
.visual-card--probability-scale .visual-svg--probability-scale {
  width: min(100%, 760px);
  max-width: 760px;
  height: auto;
  display: block;
  margin-inline: auto;
}

.visual-card--grid .visual-svg--grid {
  width: min(100%, 920px);
  max-width: 920px;
  height: auto;
}

.visual-card--fraction-model .visual-svg--fraction-model {
  width: min(100%, 900px);
  max-width: 900px;
  height: auto;
}

.visual-card--angle .visual-svg--angle {
  width: min(100%, 520px);
  max-width: 520px;
  height: auto;
  margin-inline: auto;
}

.visual-card--clock .visual-svg {
  width: min(100%, 420px);
  max-width: 420px;
  height: auto;
  margin-inline: auto;
}


.runner-visual-panel-v2 .visual-svg,
.runner-visual-panel-v2 .visual-svg--chart,
.runner-visual-panel-v2 .visual-svg--grid,
.runner-visual-panel-v2 .visual-svg--number-line,
.runner-visual-panel-v2 .visual-svg--angle,
.runner-visual-panel-v2 .visual-svg--fraction-model,
.runner-visual-panel-v2 .visual-svg--probability-scale,
.runner-question-card-v2 .question-image,
.runner-question-card-v2 .official-crop-image {
  max-width: 100%;
  max-height: var(--runner-visual-max-h, none);
}

.runner-visual-panel-v2 .visual-card--chart .visual-svg,
.runner-visual-panel-v2 .visual-card--line-graph .visual-svg--chart,
.runner-visual-panel-v2 .visual-card--number-line .visual-svg--number-line,
.runner-visual-panel-v2 .visual-card--probability-scale .visual-svg--probability-scale,
.runner-visual-panel-v2 .visual-card--fraction-model .visual-svg--fraction-model,
.runner-question-card-v2.runner-question-panel--mode-diagram-interactive-grid .visual-card--grid,
.runner-question-card-v2.runner-question-panel--transformation-grid .visual-card--grid,
.runner-question-card-v2.runner-question-panel--coordinate-grid .visual-card--grid {
  width: min(100%, 1180px);
}

.runner-question-card-v2.runner-question-panel--mode-diagram-interactive-grid .visual-card--grid .visual-svg--grid,
.runner-question-card-v2.runner-question-panel--transformation-grid .visual-card--grid .visual-svg--grid,
.runner-question-card-v2.runner-question-panel--coordinate-grid .visual-card--grid .visual-svg--grid {
  width: min(100%, 980px);
  max-width: 980px;
}

.runner-visual-panel-v2 .visual-card--grid .visual-svg--grid,
.runner-visual-panel-v2 .visual-card--angle .visual-svg--angle,
.runner-visual-panel-v2 .visual-card--clock .visual-svg {
  width: auto;
  height: auto;
}

.visual-card--table .visual-table {
  table-layout: fixed;
}

.visual-card--table .visual-table th,
.visual-card--table .visual-table td {
  white-space: nowrap;
}

.visual-card--table-function-input,
.visual-card--function-input {
  width: min(100%, 760px);
  margin-inline: auto;
}

.table-wrap--function-input {
  width: min(100%, 760px);
  margin-inline: auto;
}

.visual-table--function-input th,
.visual-table--function-input td {
  white-space: nowrap;
  text-align: center;
  padding-block: 16px;
}

.visual-table--function-input th.is-variable {
  font-size: 1rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.visual-table--function-input td.is-target {
  font-weight: 800;
  color: var(--brand-800);
  background: color-mix(in srgb, var(--brand-100) 52%, white 48%);
}

.visual-axis-label--compact {
  font-size: .875rem;
  font-weight: 800;
}

.visual-hit--grid,
.visual-cell-hit,
.visual-svg--grid [data-grid-cell],
.visual-svg--grid [data-grid-point] {
  cursor: crosshair;
}

.visual-number-line-target {
  fill: color-mix(in srgb, var(--student-500) 28%, transparent);
}

.fraction-model-segment {
  fill: color-mix(in srgb, white 92%, var(--student-100) 8%);
  stroke: color-mix(in srgb, var(--line-default) 78%, white 22%);
  stroke-width: 2;
}

.visual-svg--fraction-model .fraction-model-segment.is-filled {
  fill: color-mix(in srgb, var(--student-500) 82%, white 18%);
  stroke: color-mix(in srgb, var(--student-700) 70%, white 30%);
}

/* one-line topbar / balanced controls on medium widths */
@media (max-width: 1180px) {
  .dashboard-kpi-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  .student-summary {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .mp-topbar__center {
    justify-content: flex-start;
  }
}

@media (max-width: 860px) {
  .dashboard-kpi-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .timeline-item {
    padding-left: 38px;
  }
}


.class-create-bar,
.class-wire-card__header,
.class-wire-card__metric,
.class-wire-card__section,
.toggle-field {
  display: grid;
  gap: var(--space-3);
}

.class-wire-card__section {
  padding-top: var(--space-3);
  border-top: 1px solid var(--line-subtle);
}

.class-wire-card__section--admin {
  margin-top: auto;
}

.compact-kpis--tight .metric-card,
.compact-kpis--tight .kpi-card {
  padding: 12px 14px;
}

.credentials-print-btn {
  min-width: 180px;
  justify-content: center;
}

.people-credentials-note {
  margin: -2px 0 14px;
  max-width: 68ch;
}

.visual-number-line-tick.is-anchor {
  stroke-width: 3.2;
}

.adult-shell {
  width: var(--site-width);
  margin-inline: auto;
}


@media (max-width: 980px) {
  .student-page-content--runner .runner-shell .runner-question-panel {
    min-height: calc(100dvh - 148px);
  }

  .runner-shell .runner-answer-panel {
    margin-inline: 14px;
  }

  .runner-answer-stack,
  .runner-keyboard-wrap,
  .runner-action-bar .button-row,
  .runner-question-panel--choice .runner-answer-stack,
  .runner-question-panel--shape-choice .runner-answer-stack,
  .runner-question-panel--choice .runner-action-bar .button-row,
  .runner-question-panel--shape-choice .runner-action-bar .button-row,
  .runner-visual-panel,
  .runner-visual-panel .visual-card {
    width: 100%;
  }

  .runner-shell .runner-question-panel--choice .options-grid[data-option-grid],
  .runner-shell .runner-question-panel--shape-choice .options-grid[data-option-grid] {
    grid-template-columns: repeat(var(--option-grid-cols, 2), minmax(min(42vw, var(--option-tile-width, 170px)), min(42vw, var(--option-tile-width, 170px))));
  }

  .runner-question-panel--choice .option-chip--tile > span,
  .runner-question-panel--choice .option-chip--single > span,
  .runner-question-panel--shape-choice .option-chip--tile > span,
  .runner-question-panel--shape-choice .option-chip--single > span {
    font-size: clamp(1.15rem, 3.3vw, 1.55rem);
  }

  .visual-card--chart .visual-svg,
  .visual-svg--chart,
  .visual-card--line-graph .visual-svg--chart,
  .visual-card--number-line .visual-svg--number-line,
  .visual-card--probability-scale .visual-svg--probability-scale,
  .visual-card--fraction-model .visual-svg--fraction-model,
  .visual-card--grid .visual-svg--grid,
  .visual-card--angle .visual-svg--angle,
  .visual-card--clock .visual-svg {
    width: 100%;
    max-width: 100%;
  }
}


/* ==========================================================================
   QUICK POLISH v18.7.40
   - softer light-mode primary action tone
   - clearer auth tabs in light mode
   - brighter dark-mode sidebar icons
   - adult sidebar top toggle aligned to student shell behaviour
   ========================================================================== */

:root {
  --light-primary-start: #6f88dd;
  --light-primary-end: #8ea5eb;
  --light-primary-border: rgba(92, 118, 198, 0.42);
  --light-primary-shadow: 0 10px 24px rgba(76, 97, 166, 0.14);
  --light-icon-surface: #eef2ff;
  --light-icon-ink: #5671be;
}

.app-sidebar__togglebar {
  display: flex;
  justify-content: flex-end;
  padding: 10px 12px 0;
}

.app-sidebar__toggle {
  min-width: 42px;
  width: 42px;
  min-height: 42px;
  padding: 0;
  box-shadow: none;
}

body.sidebar-collapsed .app-sidebar__togglebar {
  justify-content: center;
  padding-left: 0;
  padding-right: 0;
}

body.sidebar-collapsed .app-sidebar__toggle {
  margin-inline: auto;
}

html:not([data-appearance="dark"]):not([data-appearance="high-contrast"]) .btn.primary,
html:not([data-appearance="dark"]):not([data-appearance="high-contrast"]) .button-row .primary,
html:not([data-appearance="dark"]):not([data-appearance="high-contrast"]) .homepage-btn--primary {
  background: linear-gradient(135deg, var(--light-primary-start), var(--light-primary-end));
  border-color: var(--light-primary-border);
  box-shadow: var(--light-primary-shadow);
}

html:not([data-appearance="dark"]):not([data-appearance="high-contrast"]) .btn.primary:hover,
html:not([data-appearance="dark"]):not([data-appearance="high-contrast"]) .button-row .primary:hover,
html:not([data-appearance="dark"]):not([data-appearance="high-contrast"]) .homepage-btn--primary:hover {
  filter: saturate(0.96) brightness(1.01);
}

html:not([data-appearance="dark"]):not([data-appearance="high-contrast"]) .homepage-card__icon {
  background: linear-gradient(180deg, color-mix(in srgb, var(--light-icon-surface) 88%, white 12%), color-mix(in srgb, var(--light-icon-surface) 76%, white 24%));
  color: var(--light-icon-ink);
  box-shadow: inset 0 0 0 1px rgba(92, 118, 198, 0.10);
}

html:not([data-appearance="dark"]):not([data-appearance="high-contrast"]) .auth-tabs .tab-button {
  background: linear-gradient(180deg, rgba(248, 244, 236, 0.96), rgba(244, 239, 229, 0.98));
  border-color: rgba(51, 65, 102, 0.10);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.44);
}

html:not([data-appearance="dark"]):not([data-appearance="high-contrast"]) .auth-tabs .tab-button.is-active,
html:not([data-appearance="dark"]):not([data-appearance="high-contrast"]) .auth-tabs [role="tab"][aria-selected="true"] {
  background: linear-gradient(180deg, rgba(232, 238, 255, 0.98), rgba(223, 231, 252, 0.98));
  border-color: rgba(111, 136, 221, 0.34);
  box-shadow: inset 0 0 0 1px rgba(153, 172, 235, 0.30);
}

html:not([data-appearance="dark"]):not([data-appearance="high-contrast"]) .auth-tabs .tab-button:hover {
  background: linear-gradient(180deg, rgba(240, 236, 227, 0.98), rgba(236, 231, 220, 0.98));
}

html[data-appearance="dark"] .sidebar-link__icon,
html[data-appearance="dark"] .student-side-nav__icon,
html[data-appearance="dark"] .sidebar-link img {
  opacity: 1;
  filter: brightness(1.38) saturate(0.92);
}

html[data-appearance="dark"] .sidebar-link.is-active .sidebar-link__icon,
html[data-appearance="dark"] .student-side-nav__link.is-active .student-side-nav__icon {
  filter: brightness(1.52) saturate(0.96);
}

html[data-appearance="dark"] .topbar-brand-image,
html[data-appearance="dark"] .mp-footer__logo {
  filter: drop-shadow(0 1px 0 rgba(255,255,255,0.04));
}


html[data-appearance="dark"] .mp-footer__links a,
html[data-theme="dark"] .mp-footer__links a,
body.theme-dark .mp-footer__links a {
  color: var(--text-strong);
}

html[data-appearance="dark"] .mp-footer__legal,
html[data-theme="dark"] .mp-footer__legal,
body.theme-dark .mp-footer__legal {
  color: color-mix(in srgb, var(--text-body) 92%, white 8%);
}

.visual-scene {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.visual-scene .scene-el {
  vector-effect: non-scaling-stroke;
}

.visual-scene .scene-label,
.visual-scene .visual-shape-label,
.visual-scene .visual-angle-label,
.visual-scene .scene-bar-label,
.visual-scene .scene-clock-number {
  fill: var(--text-strong);
  font-size: 14px;
  font-weight: 800;
}

.visual-scene .visual-shape,
.visual-scene .scene-solid-face,
.visual-scene .scene-net-cell,
.visual-scene .scene-partition-cell {
  fill: color-mix(in srgb, var(--student-100) 55%, white 45%);
  stroke: color-mix(in srgb, var(--text-strong) 78%, white 22%);
  stroke-width: 2.2;
}

.visual-scene .scene-solid-face--back {
  fill: color-mix(in srgb, var(--student-100) 35%, white 65%);
}

.visual-scene .scene-solid-face--top {
  fill: color-mix(in srgb, var(--student-100) 46%, white 54%);
}

.visual-scene .scene-solid-face--side {
  fill: color-mix(in srgb, var(--student-100) 42%, white 58%);
}

.visual-scene .scene-solid-face--front {
  fill: color-mix(in srgb, var(--student-100) 58%, white 42%);
}

.visual-scene .scene-solid-edge,
.visual-scene .visual-angle-arm,
.visual-scene .visual-arrow,
.visual-scene .scene-axis,
.visual-scene .scene-equal-mark,
.visual-scene .scene-right-angle,
.visual-scene .visual-line,
.visual-scene .scene-grid-line,
.visual-scene .scene-grid-point-target,
.visual-scene .scene-grid-hotspot,
.visual-scene .scene-arrow-head,
.visual-scene .scene-clock-face,
.visual-scene .scene-clock-hour,
.visual-scene .scene-clock-minute,
.visual-scene .scene-clock-centre,
.visual-scene .scene-object--circle,
.visual-scene .scene-object--square,
.visual-scene .scene-object--triangle,
.visual-scene .scene-tens-frame,
.visual-scene .scene-bar-part,
.visual-scene .scene-partition-cell,
.visual-scene .scene-shaded {
  vector-effect: non-scaling-stroke;
}

.visual-scene .visual-angle-arm,
.visual-scene .visual-arrow,
.visual-scene .scene-axis,
.visual-scene .scene-solid-edge,
.visual-scene .scene-equal-mark,
.visual-scene .scene-right-angle,
.visual-scene .visual-line {
  fill: none;
  stroke: color-mix(in srgb, var(--text-strong) 78%, white 22%);
  stroke-width: 2.6;
  stroke-linecap: round;
}

.visual-scene .scene-solid-edge--back {
  stroke-opacity: .72;
  stroke-dasharray: 5 4;
}

.visual-scene .scene-solid-edge--front {
  stroke-width: 2.9;
}

.visual-scene .visual-measure-line {
  fill: none;
  stroke: color-mix(in srgb, var(--student-700) 72%, var(--text-strong) 28%);
  stroke-width: 2.8;
  stroke-linecap: round;
}

.visual-scene .visual-construction-line,
.visual-scene .visual-symmetry-line {
  fill: none;
  stroke: color-mix(in srgb, var(--student-500) 68%, white 32%);
  stroke-width: 2.2;
  stroke-dasharray: 8 7;
  stroke-linecap: round;
}

.visual-scene .scene-grid-line {
  stroke: color-mix(in srgb, var(--line-default) 70%, white 30%);
  stroke-width: 1.25;
}

.visual-scene .scene-grid-hotspot {
  fill: rgba(255,255,255,.01);
  stroke: transparent;
}

.visual-scene .scene-grid-hotspot.is-selected,
.visual-scene .scene-grid-point-target.is-selected {
  fill: color-mix(in srgb, var(--student-300) 60%, white 40%);
  stroke: color-mix(in srgb, var(--student-500) 78%, white 22%);
  stroke-width: 2;
}

.visual-scene .scene-grid-point-target {
  fill: rgba(255,255,255,.02);
  stroke: color-mix(in srgb, var(--student-500) 74%, white 26%);
  stroke-width: 1.6;
}

.visual-scene .scene-arrow-head {
  fill: color-mix(in srgb, var(--text-strong) 82%, white 18%);
}

.visual-scene .scene-clock-face {
  fill: white;
  stroke: color-mix(in srgb, var(--text-strong) 78%, white 22%);
  stroke-width: 2.6;
}

.visual-scene .scene-clock-hour {
  stroke: var(--text-strong);
  stroke-width: 5;
  stroke-linecap: round;
}

.visual-scene .scene-clock-minute {
  stroke: color-mix(in srgb, var(--student-500) 76%, white 24%);
  stroke-width: 3.8;
  stroke-linecap: round;
}

.visual-scene .scene-clock-centre {
  fill: color-mix(in srgb, var(--student-500) 82%, black 18%);
}

.visual-scene .scene-object--circle,
.visual-scene .scene-object--square,
.visual-scene .scene-object--triangle,
.visual-scene .scene-tens-frame,
.visual-scene .scene-bar-part,
.visual-scene .scene-partition-cell,
.visual-scene .scene-shaded {
  stroke: color-mix(in srgb, var(--text-strong) 74%, white 26%);
  stroke-width: 1.8;
}

.visual-scene .scene-object--circle,
.visual-scene .scene-object--square,
.visual-scene .scene-object--triangle,
.visual-scene .scene-bar-part,
.visual-scene .scene-shaded,
.visual-scene .scene-partition-cell.is-shaded,
.visual-scene .scene-tens-frame.is-filled {
  fill: color-mix(in srgb, var(--student-300) 72%, white 28%);
}

.visual-scene .scene-tens-frame,
.visual-scene .scene-partition-cell {
  fill: white;
}

.visual-scene .scene-bar-part--1,
.visual-scene .scene-bar-part--3 {
  opacity: .8;
}


.visual-card--image-overlay {
  padding: 14px;
}

.image-overlay {
  position: relative;
  width: min(100%, 760px);
  margin: 0 auto;
  border-radius: 18px;
  overflow: hidden;
  background: #fff;
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

.image-overlay__image {
  display: block;
  width: 100%;
  height: auto;
}

.image-overlay__hotspot,
.image-overlay__coordinate-layer {
  position: absolute;
  border: 0;
  padding: 0;
  margin: 0;
  background: transparent;
}

.image-overlay__hotspot {
  transform: translate(-50%, -50%);
  border-radius: 14px;
  outline: 2px solid rgba(37, 99, 235, 0.18);
  outline-offset: -2px;
  transition: outline-color 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.image-overlay__hotspot--circle {
  border-radius: 999px;
}

.image-overlay__hotspot:hover,
.image-overlay__hotspot:focus-visible {
  outline-color: rgba(37, 99, 235, 0.55);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.image-overlay__hotspot.is-selected {
  background: rgba(59, 130, 246, 0.14);
  outline-color: rgba(37, 99, 235, 0.9);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.14);
}

.image-overlay__coordinate-layer {
  inset: 0;
  width: 100%;
  height: 100%;
  cursor: crosshair;
}

.image-overlay__marker {
  position: absolute;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

.image-overlay__marker--point {
  width: 16px;
  height: 16px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.95);
  border: 3px solid #fff;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.22);
}

.image-overlay__caption {
  margin-top: 10px;
}


.public-band--compact {
  padding: 1.2rem 1.4rem;
}

.steps-grid--request-demo {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}


/* v18.7.52 systemic competition/practice diagram readability fixes */
.visual-axis-label--number-line {
  font-size: 18px;
  font-weight: 900;
  letter-spacing: .01em;
}

.visual-axis-caption--number-line {
  font-size: 16px;
  font-weight: 800;
  letter-spacing: .015em;
}

.visual-card--number-line .visual-svg--number-line,
.runner-visual-panel-v2 .visual-card--number-line .visual-svg--number-line {
  width: min(100%, 900px);
  max-width: 900px;
}

.visual-hit--number-line {
  cursor: pointer;
}

.scene-label.visual-shape-label {
  paint-order: stroke;
  stroke: rgba(255,255,255,.9);
  stroke-width: 6px;
  stroke-linejoin: round;
}


/* v18.7.54 competition count-up + centered prompt refinement */
.runner-shell-v2[data-session-kind="competition"] .runner-question-stage-v2 {
  justify-items: center;
}

.runner-shell-v2[data-session-kind="competition"] .runner-prompt {
  width: min(100%, 980px);
  justify-items: center;
  text-align: center;
}

.runner-shell-v2[data-session-kind="competition"] .runner-prompt__intro,
.runner-shell-v2[data-session-kind="competition"] .runner-prompt__context,
.runner-shell-v2[data-session-kind="competition"] .runner-prompt__detail {
  text-align: center;
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--mode-compact-typed {
  min-height: clamp(320px, 42vh, 500px);
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--mode-compact-typed .runner-question-body-v2 {
  justify-items: stretch;
  align-content: center;
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--mode-compact-typed .runner-prompt__main {
  max-width: 18ch;
  font-size: clamp(2.8rem, 5vw, 4.8rem);
  line-height: 1.02;
  margin-inline: auto;
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--mode-selection-grid .runner-prompt__main,
.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--mode-diagram-fixed-frame .runner-prompt__main,
.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--mode-diagram-interactive-grid .runner-prompt__main,
.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--choice .runner-prompt__main,
.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--shape-choice .runner-prompt__main {
  max-width: 30ch;
  font-size: clamp(1.9rem, 2.9vw, 3.2rem);
  margin-inline: auto;
}

.runner-shell-v2[data-session-kind="competition"] .runner-answer-stage-v2,
.runner-shell-v2[data-session-kind="competition"] .runner-answer-stack-v2 {
  width: min(100%, 880px);
}

.runner-shell-v2[data-session-kind="competition"] .runner-answer-stack-v2 .field-label,
.runner-shell-v2[data-session-kind="competition"] .runner-answer-stack-v2 .answer-label,
.runner-shell-v2[data-session-kind="competition"] .runner-answer-stack-v2 label {
  text-align: center;
}

/* v18.8.0 systemic runner, analytics and form hardening */
.runner-header-v2__left,
.runner-status-v2__left {
  flex-wrap: wrap;
  gap: 10px;
}

.runner-header-pill-v2--status {
  background: color-mix(in srgb, var(--student-100) 84%, var(--bg-panel) 16%);
  border-color: color-mix(in srgb, var(--student-600) 24%, var(--line-default) 76%);
  color: var(--student-800);
}

.runner-shell-v2[data-session-kind="competition"] .runner-stage-v2 {
  grid-template-columns: minmax(0, 1.65fr) minmax(320px, 380px);
  gap: 24px;
  align-items: start;
}


.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2 {
  min-height: clamp(620px, 76vh, 920px);
  padding: 24px 26px 24px;
  gap: 22px;
  border-radius: 30px;
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-body-v2,
.runner-shell-v2[data-session-kind="competition"] .runner-question-stage-v2 {
  gap: 18px;
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-stage-v2 {
  justify-items: stretch;
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2 .runner-prompt {
  width: min(100%, 980px);
  justify-items: center;
  text-align: center;
  margin-inline: auto;
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2 .runner-prompt__intro,
.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2 .runner-prompt__context,
.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2 .runner-prompt__detail {
  text-align: center;
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2 .runner-prompt__main {
  max-width: 16ch;
  font-size: clamp(4.2rem, 6vw, 6.6rem);
  line-height: .96;
  margin-inline: auto;
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--mode-selection-grid .runner-prompt__main,
.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--mode-diagram-fixed-frame .runner-prompt__main,
.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--mode-diagram-interactive-grid .runner-prompt__main,
.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--choice .runner-prompt__main,
.runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2.runner-question-panel--shape-choice .runner-prompt__main {
  max-width: 28ch;
  font-size: clamp(2.2rem, 3.3vw, 3.6rem);
}

.runner-shell-v2[data-session-kind="competition"] .runner-answer-panel-v2 {
  margin-top: auto;
  padding-top: 18px;
}

.runner-shell-v2[data-session-kind="competition"] .runner-answer-stage-v2,
.runner-shell-v2[data-session-kind="competition"] .runner-answer-stack-v2 {
  width: min(100%, 1080px);
}

.runner-shell-v2[data-session-kind="competition"] .runner-side-rail-v2 {
  align-self: stretch;
}

.runner-shell-v2[data-session-kind="competition"] .runner-rail-slot-v2--tools,
.runner-shell-v2[data-session-kind="competition"] [data-runner-tools-card] {
  height: 100%;
}

.runner-shell-v2[data-session-kind="competition"] .runner-rail-card-v2--keyboard,
.runner-shell-v2[data-session-kind="competition"] .runner-rail-card-v2--tools-placeholder {
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 16px;
  padding: 14px;
}

.runner-shell-v2[data-session-kind="competition"] .runner-rail-title-v2 {
  font-size: .82rem;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.runner-card-actions-v2 {
  display: flex;
  align-items: flex-start;
  justify-content: flex-start;
  gap: 10px;
  padding-top: 18px;
  border-top: 1px solid var(--line-subtle);
}

.runner-shell-v2[data-session-kind="competition"] .runner-card-actions-v2 {
  padding-top: 20px;
}

.runner-card-actions-v2 .btn {
  min-height: 48px;
}

.runner-worked {
  display: grid;
  gap: 10px;
  padding: 14px 16px;
  border-radius: var(--radius-3);
  border: 1px solid color-mix(in srgb, var(--brand-600) 18%, var(--line-default) 82%);
  background: color-mix(in srgb, var(--brand-50) 72%, var(--bg-panel) 28%);
}

.runner-worked strong {
  font-size: .84rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.runner-worked ol {
  margin: 0;
  padding-left: 1.2rem;
  display: grid;
  gap: 8px;
}

.completion-kpi-grid {
  align-items: stretch;
}

.completion-kpi-card {
  text-align: center;
  align-content: center;
  justify-items: center;
  min-height: 140px;
}

.completion-kpi-card .label,
.completion-kpi-card .value {
  text-align: center;
}

.visual-line--series-1 {
  stroke: color-mix(in srgb, var(--student-700) 84%, white 16%);
  stroke-width: 4;
}

.visual-line--series-2 {
  stroke: color-mix(in srgb, var(--brand-700) 74%, white 26%);
  stroke-width: 4;
  stroke-dasharray: 10 7;
}

.visual-point-fill--series-1 {
  fill: color-mix(in srgb, var(--student-700) 84%, white 16%);
}

.visual-point-fill--series-2 {
  fill: color-mix(in srgb, var(--brand-700) 74%, white 26%);
}

.visual-line-legend text {
  font-weight: 800;
}

.visual-card--line-graph .visual-svg--chart {
  max-width: 100%;
}

.visual-card--number-line .visual-svg--number-line,
.runner-visual-panel-v2 .visual-card--number-line .visual-svg--number-line {
  width: min(100%, 1040px);
  max-width: 1040px;
}

.visual-axis-label--number-line {
  font-size: 20px;
}

.visual-axis-caption--number-line {
  font-size: 17px;
}

.visual-number-line-track {
  stroke-width: 4.8;
}

.visual-number-line-tick {
  stroke-width: 3.4;
}

.visual-hit--number-line {
  rx: 18px;
}

select {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  padding-right: 42px;
  background-image:
    linear-gradient(45deg, transparent 50%, currentColor 50%),
    linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position:
    calc(100% - 22px) calc(50% - 3px),
    calc(100% - 16px) calc(50% - 3px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
}

select::-ms-expand {
  display: none;
}

select option,
select optgroup {
  color: var(--text-strong);
  background: var(--bg-panel);
}

html[data-appearance="dark"] select,
html[data-appearance="high-contrast"] select {
  background-color: color-mix(in srgb, var(--bg-interactive) 84%, black 16%);
  color: var(--text-strong);
  border-color: color-mix(in srgb, var(--line-default) 82%, white 18%);
}

html[data-appearance="dark"] select option,
html[data-appearance="dark"] select optgroup,
html[data-appearance="high-contrast"] select option,
html[data-appearance="high-contrast"] select optgroup {
  background: color-mix(in srgb, var(--bg-panel-2) 88%, black 12%);
  color: var(--text-strong);
}

html[data-appearance="dark"] .student-side-nav__toggle,
html[data-appearance="dark"] .student-side-nav__link,
html[data-appearance="dark"] .student-side-nav {
  border-color: color-mix(in srgb, var(--line-default) 78%, white 22%);
}

@media (max-width: 1100px) {
  .runner-shell-v2[data-session-kind="competition"] .runner-stage-v2 {
    grid-template-columns: 1fr;
  }

  .runner-shell-v2[data-session-kind="competition"] .runner-question-card-v2 .runner-prompt__main {
    max-width: 100%;
  }
}


/* v18.8.1 competition shell alignment + session mode clarity */
.runner-shell-v2[data-session-kind="competition"] .runner-question-head-v2--simple {
  padding-bottom: 4px;
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-meta-v2 {
  font-size: 0.86rem;
  letter-spacing: 0.14em;
}

.runner-shell-v2[data-session-kind="competition"] .runner-question-stage-v2 {
  justify-items: stretch;
  align-content: start;
  gap: 24px;
}

.runner-shell-v2[data-session-kind="competition"] .runner-answer-stack-v2 .field-label,
.runner-shell-v2[data-session-kind="competition"] .runner-answer-stack-v2 .answer-label,
.runner-shell-v2[data-session-kind="competition"] .runner-answer-stack-v2 label {
  text-align: center;
  font-size: 0.92rem;
  letter-spacing: 0;
}

.runner-shell-v2[data-session-kind="competition"] .runner-answer-stack-v2 input,
.runner-shell-v2[data-session-kind="competition"] .runner-answer-stack-v2 textarea,
.runner-shell-v2[data-session-kind="competition"] .runner-answer-stack-v2 [data-answer-input] {
  min-height: 84px;
  font-size: 2rem;
}

.runner-shell-v2[data-session-kind="competition"] .runner-rail-card-v2--keyboard,
.runner-shell-v2[data-session-kind="competition"] .runner-rail-card-v2--tools-placeholder {
  border-radius: 28px;
  padding: 18px;
}

.runner-shell-v2[data-session-kind="competition"] .runner-header-progress-value-v2 {
  font-size: 1rem;
}


.student-completion-card--refined {
  display: grid;
  gap: 18px;
  max-width: min(100%, 980px);
}

.completion-page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.completion-page-header__meta {
  white-space: nowrap;
  padding-top: 4px;
}

.completion-page-summary {
  max-width: 72ch;
  margin-top: -6px;
}

.completion-overview {
  display: grid;
  gap: 16px;
}

.completion-hero-card {
  display: grid;
  gap: 18px;
  padding: 20px 22px;
  border: 1px solid color-mix(in srgb, var(--brand-500) 12%, var(--line-default) 88%);
  background: linear-gradient(180deg, color-mix(in srgb, var(--brand-50) 72%, var(--bg-panel) 28%), color-mix(in srgb, var(--bg-panel) 96%, white 4%));
}

.completion-hero-card__header,
.completion-hero-card__body,
.completion-hero-card__meta {
  display: flex;
  align-items: center;
  gap: 16px;
}

.completion-hero-card__header {
  justify-content: space-between;
}

.completion-hero-card__body {
  align-items: stretch;
}

.completion-hero-card__score-wrap {
  min-width: 180px;
  padding: 16px 18px;
  border-radius: var(--radius-3);
  background: color-mix(in srgb, var(--bg-panel) 82%, white 18%);
  border: 1px solid color-mix(in srgb, var(--brand-500) 12%, var(--line-subtle) 88%);
  display: grid;
  align-content: center;
  justify-items: center;
  gap: 6px;
}

.completion-hero-card__score {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: .95;
  font-weight: 900;
  color: var(--brand-700);
}

.completion-hero-card__score-label {
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.completion-hero-card__summary {
  display: grid;
  gap: 10px;
  flex: 1;
}

.completion-hero-card__summary h3,
.completion-hero-card__header h2 {
  margin: 0;
}

.completion-hero-card__meta {
  flex-wrap: wrap;
}

.completion-hero-card__meta-item {
  display: grid;
  gap: 4px;
  min-width: 140px;
}

.completion-hero-card__meta-item span {
  font-size: .76rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.completion-hero-card__meta-item strong {
  font-size: 1.1rem;
  color: var(--text-strong);
}

.completion-kpi-grid {
  align-items: stretch;
}

.completion-kpi-grid--compact {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.completion-kpi-card {
  text-align: left;
  align-content: start;
  justify-items: start;
  min-height: 0;
  padding: 18px;
}

.completion-kpi-card .label,
.completion-kpi-card .value {
  text-align: left;
}

.completion-actions {
  margin-top: 4px;
}

.completion-actions--primary {
  justify-content: flex-start;
}

.completion-actions--secondary {
  margin-top: -8px;
}

.student-feedback-card--compact {
  gap: 12px;
  padding: 18px;
}

.student-feedback-card--compact h2 {
  margin: 0;
}

@media (max-width: 980px) {
  .completion-kpi-grid--compact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .completion-page-header,
  .completion-hero-card__header,
  .completion-hero-card__body {
    flex-direction: column;
    align-items: flex-start;
  }

  .completion-page-header__meta {
    white-space: normal;
    padding-top: 0;
  }

  .completion-hero-card__score-wrap {
    width: 100%;
    min-width: 0;
  }

  .completion-kpi-grid--compact {
    grid-template-columns: 1fr;
  }

  .runner-actions-v2--competition {
    align-items: stretch;
  }

  .runner-actions-v2__group,
  .runner-actions-v2__group--danger {
    width: 100%;
    margin-left: 0;
  }

  .runner-actions-v2__group--utility,
  .runner-actions-v2__inline {
    grid-template-columns: 1fr;
  }

  .runner-actions-v2--competition .btn[data-runner-fullscreen-toggle],
  .runner-actions-v2--competition .btn[data-runner-pause],
  .runner-actions-v2--competition .btn[data-runner-cancel] {
    flex: 1 1 160px;
  }
}

/* v18.8.12 student portal density + licence card refresh */
.student-portal-columns-2-1 {
  grid-template-columns: minmax(0, 2fr) minmax(320px, 1fr);
}

.layout-split--compact {
  gap: 16px;
}

.student-licence-card {
  position: relative;
  display: grid;
  gap: 16px;
  padding: 18px 20px;
  border-radius: 24px;
  border: 1px solid rgba(27, 42, 68, 0.12);
  background:
    linear-gradient(135deg, rgba(255,255,255,0.78), rgba(255,255,255,0.62)),
    radial-gradient(circle at top right, rgba(90, 140, 255, 0.16), transparent 42%),
    linear-gradient(180deg, rgba(232,223,200,0.72), rgba(255,255,255,0.9));
  box-shadow: 0 22px 46px rgba(27, 42, 68, 0.10);
}

.student-licence-card--football {
  background:
    linear-gradient(135deg, rgba(255,255,255,0.82), rgba(255,255,255,0.66)),
    radial-gradient(circle at top right, rgba(50, 156, 111, 0.18), transparent 42%),
    linear-gradient(180deg, rgba(232,223,200,0.72), rgba(255,255,255,0.92));
}

.student-licence-card__hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(240px, 0.85fr);
  gap: 18px;
  align-items: end;
}

.student-licence-card__copy h1 {
  margin: 6px 0 4px;
  font-size: clamp(1.5rem, 2.4vw, 2.1rem);
  line-height: 1.05;
}

.student-licence-card__level-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 14px;
}

.student-level-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 92px;
  padding: 10px 12px;
  border-radius: 18px;
  background: rgba(27, 42, 68, 0.08);
  border: 1px solid rgba(27, 42, 68, 0.12);
}

.student-level-badge--football {
  background: rgba(50, 156, 111, 0.10);
  border-color: rgba(50, 156, 111, 0.18);
}

.student-level-badge__icon {
  font-size: 1.05rem;
}

.student-level-badge__token {
  font-weight: 800;
  letter-spacing: 0.06em;
}

.student-level-copy {
  display: grid;
  gap: 2px;
}

.student-level-copy strong {
  font-size: 1rem;
}

.student-theme-switch {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-left: auto;
}

.student-licence-card__meter {
  display: grid;
  gap: 8px;
  padding: 14px;
  border-radius: 18px;
  background: rgba(255,255,255,0.62);
  border: 1px solid rgba(27, 42, 68, 0.10);
}

.student-licence-card__meter-head,
.student-licence-card__meter-foot {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.student-licence-card__meter-head strong {
  font-size: 1.1rem;
}

.student-progress-track {
  position: relative;
  height: 10px;
  border-radius: 999px;
  overflow: hidden;
  background: rgba(27, 42, 68, 0.10);
}

.student-progress-track > span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, rgba(90, 140, 255, 0.95), rgba(27, 42, 68, 0.82));
}

.student-licence-card--football .student-progress-track > span {
  background: linear-gradient(90deg, rgba(50, 156, 111, 0.96), rgba(27, 42, 68, 0.86));
}

.student-metric-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(132px, 1fr));
  gap: 10px;
}

.student-metric-chip {
  display: grid;
  gap: 3px;
  padding: 12px 13px;
  min-height: 86px;
  border-radius: 18px;
  background: rgba(255,255,255,0.74);
  border: 1px solid rgba(27, 42, 68, 0.08);
}

.student-metric-chip--emphasis {
  background: rgba(90, 140, 255, 0.08);
}

.student-metric-chip__label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(27, 42, 68, 0.72);
}

.student-metric-chip__value {
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.15;
}

.student-metric-chip__meta {
  font-size: 0.78rem;
  color: rgba(27, 42, 68, 0.72);
}

.student-card--compact {
  padding: 16px 18px;
}

.student-action-stack,
.student-compact-list {
  display: grid;
  gap: 10px;
}

.student-action-row,
.student-compact-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 12px 14px;
  border-radius: 18px;
  border: 1px solid rgba(27, 42, 68, 0.08);
  background: rgba(255,255,255,0.56);
}

.student-action-row__copy,
.student-compact-row__main {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.student-compact-row__main strong,
.student-action-row__copy strong {
  line-height: 1.2;
}

.student-compact-row__meta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  justify-content: flex-end;
  flex-wrap: wrap;
}

.student-compact-row__meta--stack {
  display: grid;
  justify-items: end;
}

.student-pill {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(27, 42, 68, 0.08);
  border: 1px solid rgba(27, 42, 68, 0.08);
  font-size: 0.76rem;
  font-weight: 700;
  color: rgba(27, 42, 68, 0.86);
}

.student-pill--accent {
  background: rgba(90, 140, 255, 0.12);
}

.student-badge-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.student-badge-chip {
  display: inline-grid;
  gap: 2px;
  min-width: 148px;
  padding: 10px 12px;
  border-radius: 16px;
  background: rgba(255,255,255,0.62);
  border: 1px solid rgba(27, 42, 68, 0.08);
  font-size: 0.84rem;
}

.student-badge-chip span {
  color: rgba(27, 42, 68, 0.72);
  font-size: 0.75rem;
}

.student-inline-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.student-form-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.student-form-grid--compact label {
  display: grid;
  gap: 6px;
}

.student-form-grid--compact :is(select, input, textarea) {
  min-height: 42px;
}

.student-segmented {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 12px;
}

.student-segmented__button {
  min-height: 34px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(27, 42, 68, 0.12);
  background: rgba(255,255,255,0.84);
  color: inherit;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.student-segmented__button.is-active {
  background: rgba(27, 42, 68, 0.90);
  color: #fff;
  border-color: rgba(27, 42, 68, 0.90);
}

.student-recommended-pack {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 14px 16px;
  margin: 0 0 14px;
  border-radius: 18px;
  background: rgba(90, 140, 255, 0.08);
  border: 1px solid rgba(90, 140, 255, 0.14);
}

.student-card .student-card {
  padding: 0;
  border: 0;
  background: transparent;
  box-shadow: none;
}

.student-completion-card--refined {
  padding: 18px 20px;
}

.completion-actions--primary .btn,
.completion-actions--secondary .btn {
  min-height: 40px;
}

@media (max-width: 1100px) {
  .student-licence-card__hero,
  .student-portal-columns-2-1,
  .student-recommended-pack {
    grid-template-columns: 1fr;
  }

  .student-theme-switch {
    margin-left: 0;
  }
}

@media (max-width: 720px) {
  .student-licence-card,
  .student-card--compact {
    padding: 14px;
  }

  .student-action-row,
  .student-compact-row {
    grid-template-columns: 1fr;
  }

  .student-compact-row__meta,
  .student-compact-row__meta--stack,
  .student-licence-card__meter-head,
  .student-licence-card__meter-foot {
    justify-content: flex-start;
  }

  .student-form-grid {
    grid-template-columns: 1fr;
  }
}

html[data-appearance="dark"] .student-licence-card,
body.theme-dark .student-licence-card {
  background:
    linear-gradient(135deg, rgba(21, 33, 53, 0.96), rgba(12, 23, 42, 0.96)),
    radial-gradient(circle at top right, rgba(90, 140, 255, 0.20), transparent 42%);
  border-color: rgba(255,255,255,0.08);
}

html[data-appearance="dark"] .student-licence-card--football,
body.theme-dark .student-licence-card--football {
  background:
    linear-gradient(135deg, rgba(21, 33, 53, 0.96), rgba(12, 23, 42, 0.96)),
    radial-gradient(circle at top right, rgba(50, 156, 111, 0.22), transparent 42%);
}

html[data-appearance="dark"] :is(.student-metric-chip, .student-action-row, .student-compact-row, .student-level-badge, .student-licence-card__meter, .student-badge-chip, .student-recommended-pack),
body.theme-dark :is(.student-metric-chip, .student-action-row, .student-compact-row, .student-level-badge, .student-licence-card__meter, .student-badge-chip, .student-recommended-pack) {
  background: rgba(255,255,255,0.05);
  border-color: rgba(255,255,255,0.08);
}

html[data-appearance="dark"] .student-segmented__button,
body.theme-dark .student-segmented__button {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.10);
}

html[data-appearance="dark"] .student-segmented__button.is-active,
body.theme-dark .student-segmented__button.is-active {
  background: rgba(255,255,255,0.92);
  color: #102038;
}