/* PatternLab Verbs — see docs/design-system.md
   Layers: tokens (:root) → base → shell → home → practice/speed → learn */

:root {
  color-scheme: light;
  --font-sans: "Plus Jakarta Sans", system-ui, "Segoe UI", Roboto, Ubuntu, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Segoe UI Mono", Menlo, monospace;

  /* Spacing: 4px grid (rem) — 4, 8, 12, 16, 20, 24, 28, 32 */
  --space-1: 0.25rem; /* 4 */
  --space-2: 0.5rem; /* 8 */
  --space-3: 0.75rem; /* 12 */
  --space-4: 1rem; /* 16 */
  --space-5: 1.25rem; /* 20 */
  --space-6: 1.5rem; /* 24 */
  --space-7: 1.75rem; /* 28 */
  --space-8: 2rem; /* 32 */

  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-pill: 999px;

  --border-width: 1px;
  --border-width-thick: 2px;

  /* Typography scale */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.35;
  --leading-normal: 1.5;
  --leading-relaxed: 1.55;
  --leading-loose: 1.6;

  --text-2xs: 0.6875rem; /* 11px — minimum UI chrome */
  --text-xs: 0.75rem; /* 12px — labels, captions */
  --text-sm: 0.8125rem; /* 13px */
  --text-md: 0.875rem; /* 14px — dense body */
  --text-base: 1rem; /* 16px */
  --text-lg: 1.0625rem; /* 17px */
  --text-xl: 1.125rem; /* 18px */
  --text-2xl: 1.25rem; /* 20px */
  --text-3xl: 1.375rem; /* 22px */
  --text-4xl: 1.5rem; /* 24px */
  --text-5xl: 1.75rem; /* 28px — app hero */
  --text-display: 1.85rem; /* large numeric UI */

  --letter-tight: -0.02em;
  --letter-wide: 0.04em;
  --letter-label: 0.07em;
  --letter-caps: 0.08em;

  /* Motion */
  --duration-fast: 0.15s;
  --duration-normal: 0.2s;
  --ease-standard: ease;
  --transition-interactive: border-color var(--duration-fast) var(--ease-standard),
    box-shadow var(--duration-fast) var(--ease-standard),
    background-color var(--duration-fast) var(--ease-standard),
    color var(--duration-fast) var(--ease-standard);

  /* Touch & icons */
  --size-touch-target: 2.5rem; /* 40px */
  --size-icon-sm: 1.25rem;
  --size-icon-md: 1.5rem;

  /* Surfaces */
  --card-padding: var(--space-5);
  --card-padding-sm: var(--space-4);
  --card-gap: var(--space-4);

  /* Layout: main column width on large screens */
  --layout-max-width: 1300px;

  /* Light theme (default) */
  --color-bg: #f4f2fb;
  --color-surface: #ffffff;
  --color-surface-elevated: #faf8ff;
  --color-text: #1a1823;
  --color-text-muted: #5c5a6b;
  --color-border: #e4e0f0;
  --color-border-strong: #d0c8e8;
  --color-primary: #6557d9;
  --color-primary-hover: #5448c4;
  --color-primary-soft: #ede9fe;
  --color-primary-soft-text: #4338ca;
  --color-success: #059669;
  --color-success-soft: rgba(5, 150, 105, 0.12);
  --color-danger: #dc2626;
  --color-danger-soft: rgba(220, 38, 38, 0.1);
  --shadow-card: 0 1px 3px rgba(26, 24, 35, 0.06), 0 4px 14px rgba(101, 87, 217, 0.07);
  --shadow-card-hover: 0 4px 12px rgba(101, 87, 217, 0.12);
  --focus-ring: 0 0 0 3px rgba(101, 87, 217, 0.35);

  /* Legacy aliases (used across views) */
  --bg: var(--color-bg);
  --surface: var(--color-surface);
  --text: var(--color-text);
  --muted: var(--color-text-muted);
  --accent: var(--color-primary);
  --accent-dim: var(--color-primary-hover);
  --border: var(--color-border);
  --danger: var(--color-danger);
  --radius: var(--radius-md);
}

[data-theme="dark"] {
  color-scheme: dark;
  --color-bg: #12101a;
  --color-surface: #1c1a26;
  --color-surface-elevated: #252330;
  --color-text: #f0eef8;
  --color-text-muted: #a09cb0;
  --color-border: #353244;
  --color-border-strong: #45405a;
  --color-primary: #9d8ff5;
  --color-primary-hover: #b4a9f7;
  --color-primary-soft: #2f2a45;
  --color-primary-soft-text: #c4b8fc;
  --color-success: #34d399;
  --color-success-soft: rgba(52, 211, 153, 0.15);
  --color-danger: #f87171;
  --color-danger-soft: rgba(248, 113, 113, 0.14);
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.35);
  --shadow-card-hover: 0 6px 20px rgba(0, 0, 0, 0.45);
  --focus-ring: 0 0 0 3px rgba(157, 143, 245, 0.45);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: var(--leading-normal);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-weight-normal);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ——— App shell (global header) ——— */
.app-shell__bar {
  width: 100%;
  border-bottom: var(--border-width) solid var(--color-border);
  background: var(--color-surface);
  position: sticky;
  top: 0;
  z-index: 50;
}

.app-shell__inner {
  max-width: var(--layout-max-width);
  margin: 0 auto;
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.app-shell__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
  font-weight: var(--font-weight-bold);
  font-size: var(--text-base);
}

.app-shell__brand:hover {
  color: var(--color-primary);
}

.app-shell__brand-mark {
  width: var(--size-icon-sm);
  height: var(--size-icon-sm);
  flex-shrink: 0;
  border-radius: var(--radius-xs);
  background:
    linear-gradient(var(--color-primary), var(--color-primary)) 0 0 / 8px 8px no-repeat,
    linear-gradient(var(--color-primary), var(--color-primary)) 12px 0 / 8px 8px no-repeat,
    linear-gradient(var(--color-primary), var(--color-primary)) 0 12px / 8px 8px no-repeat,
    linear-gradient(var(--color-primary), var(--color-primary)) 12px 12px / 8px 8px no-repeat;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--size-touch-target);
  height: var(--size-touch-target);
  padding: 0;
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-elevated);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: var(--transition-interactive);
}

.theme-toggle:hover {
  color: var(--color-primary);
  border-color: var(--color-border-strong);
}

.theme-toggle:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.theme-toggle__icon {
  display: block;
}

[data-theme="light"] .theme-toggle__icon--sun {
  display: none;
}

[data-theme="dark"] .theme-toggle__icon--moon {
  display: none;
}

#app {
  max-width: var(--layout-max-width);
  margin: 0 auto;
  padding: var(--space-5) var(--space-4) var(--space-8);
  width: 100%;
}

#app:has(.home-layout) {
  padding-top: var(--space-4);
  padding-bottom: var(--space-6);
}

.home-layout {
  display: flex;
  flex-direction: column;
}

.home-hero {
  margin-bottom: var(--space-6);
}

.home-hero--compact {
  margin-bottom: var(--space-4);
}

.home-hero--compact .app-title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-1);
}

.home-hero--compact .app-tagline {
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  max-width: 34rem;
}

.home-hero--compact .home-hero__actions {
  margin-top: var(--space-3);
  gap: var(--space-2);
}

.home-hero--compact .home-hero__cta {
  min-height: 2.375rem;
  padding-left: var(--space-4);
  padding-right: var(--space-4);
  font-size: var(--text-md);
}

.app-title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-5xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-tight);
  line-height: var(--leading-tight);
  color: var(--color-text);
}

.app-tagline {
  margin: 0;
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
  font-size: var(--text-lg);
  max-width: 36rem;
}

.app-tagline strong {
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
}

.home-hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: var(--space-3);
  margin-top: var(--space-4);
  max-width: 36rem;
}

.home-hero__cta {
  min-height: var(--size-touch-target);
  padding-left: var(--space-5);
  padding-right: var(--space-5);
}

.home-hero__cta-em {
  font-weight: var(--font-weight-bold);
}

.home-main {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.home-section {
  margin: 0;
}

.home-main > .home-section + .home-section {
  margin-top: var(--space-4);
}

.home-section--study {
  margin-top: 0;
}

.home-section__header-block {
  margin: 0 0 var(--space-3);
  max-width: 42rem;
}

.home-section__header-block--tight {
  margin-bottom: var(--space-2);
}

.home-section__header-block--inline {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2) var(--space-4);
  margin-bottom: var(--space-2);
  max-width: none;
}

.home-section__header-block--inline .home-section__heading {
  margin: 0;
}

.home-section__header-block--inline .home-section__intro {
  flex: 1 1 12rem;
  min-width: 0;
}

.home-section__header-block--compact {
  margin-bottom: var(--space-4);
}

.home-section__kicker {
  margin: 0 0 var(--space-1);
  font-size: var(--text-2xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-caps);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.home-section__heading {
  margin: 0 0 var(--space-2);
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-tight);
  line-height: var(--leading-tight);
  color: var(--color-text);
}

.home-section--study .home-section__heading {
  font-size: var(--text-xl);
  margin-bottom: var(--space-1);
}

.home-section--practice .home-section__heading {
  font-size: var(--text-lg);
  margin-bottom: 0;
}

.home-section__intro {
  margin: 0;
  font-size: var(--text-md);
  line-height: var(--leading-relaxed);
  color: var(--color-text-muted);
}

.home-section__intro--inline {
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
}

.home-study-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
  grid-template-columns: 1fr;
}

.home-study-grid__item {
  margin: 0;
  padding: 0;
  min-width: 0;
  display: flex;
}

.home-study-grid__item .mode-card {
  flex: 1;
  width: 100%;
}

.home-study-grid__item .home-meaning-block {
  flex: 1;
  width: 100%;
}

.home-study-grid__item--also {
  grid-column: 1 / -1;
}

.home-study-grid__item--secondary {
  grid-column: 1 / -1;
}

@media (min-width: 560px) {
  .home-study-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .home-study-grid__item--also,
  .home-study-grid__item--secondary {
    grid-column: 1 / -1;
  }
}

.home-study-also {
  padding: var(--space-1) 0;
}

/* Meaning changes: single bordered block (lesson + practice sub-action) */
.home-meaning-block {
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* Must beat .mode-card (defined later) so the outer .home-meaning-block is the only frame */
.home-meaning-block__lesson.mode-card {
  border: none;
  border-radius: 0;
  box-shadow: none;
  background: transparent;
  padding: var(--space-2) var(--space-3);
  gap: var(--space-2);
  flex-direction: row;
  align-items: center;
  text-align: left;
  width: 100%;
  box-sizing: border-box;
}

.home-meaning-block__lesson .mode-card__icon-wrap {
  width: 36px;
  height: 36px;
}

.home-meaning-block__lesson .mode-card__title {
  font-size: var(--text-md);
  font-weight: var(--font-weight-semibold);
}

.home-meaning-block__lesson .mode-card__desc {
  font-size: var(--text-2xs);
  line-height: var(--leading-snug);
}

.home-meaning-block__practice {
  display: block;
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  font-family: var(--font-sans);
  color: var(--color-primary);
  text-decoration: none;
  line-height: var(--leading-snug);
  border-top: var(--border-width) solid var(--color-border);
  background: var(--color-surface-elevated);
  transition: var(--transition-interactive);
}

.home-meaning-block__practice:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-soft-text);
}

.home-meaning-block__practice:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  position: relative;
  z-index: 1;
}

/* Discrete extra lesson (home only) */
.home-section--quick-links {
  margin-top: var(--space-1);
}

.home-quick-extra {
  display: inline-block;
  font-size: var(--text-xs);
  line-height: var(--leading-snug);
  color: var(--color-text-muted);
  text-decoration: none;
  padding: var(--space-1) 0;
}

.home-quick-extra:hover {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 0.12em;
}

.home-quick-extra:focus-visible {
  outline: none;
  border-radius: var(--radius-xs);
  box-shadow: var(--focus-ring);
}

.home-quick-extra strong {
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.home-section__head {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin: 0 0 var(--space-3);
}

.home-section__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.home-section__title {
  margin: 0;
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-caps);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

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

.home-grid--practice {
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-3);
  align-items: stretch;
}

@media (min-width: 720px) {
  .home-grid--practice {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-auto-rows: 1fr;
  }
}

.home-grid__item {
  margin: 0;
  padding: 0;
  min-width: 0;
  display: flex;
  align-items: stretch;
}

.home-grid__item .mode-card {
  flex: 1;
  width: 100%;
  min-height: 100%;
}

.home-section--practice .home-practice-card {
  align-items: flex-start;
}

.mode-card {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--card-padding) var(--card-padding-sm);
  border-radius: var(--radius-lg);
  border: var(--border-width) solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  text-align: left;
  box-shadow: var(--shadow-card);
  transition: border-color var(--duration-normal) var(--ease-standard),
    box-shadow var(--duration-normal) var(--ease-standard),
    transform var(--duration-normal) var(--ease-standard);
  width: 100%;
}

.mode-card--link {
  text-decoration: none;
  color: inherit;
  box-sizing: border-box;
}

.mode-card--link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring), var(--shadow-card);
}

.home-meaning-block__lesson.mode-card--link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.mode-card--study-primary {
  border-color: var(--color-primary);
  background: var(--color-surface-elevated);
  box-shadow: var(--shadow-card-hover);
}

.mode-card--study-primary .mode-card__tag {
  background: var(--color-primary-soft);
  color: var(--color-primary-soft-text);
}

/* Two equal “core” study pillars (-ing and to + verb) */
.mode-card--study-pillar {
  box-shadow: var(--shadow-card), inset 0 3px 0 0 var(--color-primary);
}

.mode-card--study-pillar .mode-card__tag {
  background: var(--color-primary-soft);
  color: var(--color-primary-soft-text);
}

/* Secondary study row: lighter weight than the three main groups */
.mode-card--study-secondary {
  flex-direction: row;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  box-shadow: none;
  background: var(--color-surface);
  border-color: var(--color-border);
}

.mode-card--study-secondary .mode-card__icon-wrap {
  width: 32px;
  height: 32px;
}

.mode-card--study-secondary .mode-card__body {
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
  column-gap: var(--space-3);
  row-gap: var(--space-1);
}

.mode-card--study-secondary .mode-card__title {
  font-size: var(--text-md);
  font-weight: var(--font-weight-medium);
}

.mode-card--study-secondary .mode-card__desc {
  font-size: var(--text-2xs);
  flex: 1 1 8rem;
  min-width: 0;
}

.mode-card--study-secondary .mode-card__tag {
  margin-top: 0;
  margin-left: auto;
  padding: 2px var(--space-2);
  font-size: var(--text-2xs);
  background: var(--color-surface-elevated);
  color: var(--color-text-muted);
  border: var(--border-width) solid var(--color-border);
}

@media (min-width: 640px) {
  .mode-card--study-secondary .mode-card__body {
    flex-wrap: nowrap;
  }

  .mode-card--study-secondary .mode-card__desc {
    flex: 1 1 auto;
  }
}

.mode-card--study-secondary:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-card);
}

@media (prefers-reduced-motion: no-preference) {
  .mode-card--study-secondary:hover {
    transform: translateY(-1px);
  }
}

/* Compact home cards (main study + practice) */
.home-study-card:not(.mode-card--study-secondary) {
  padding: var(--space-3) var(--space-4);
  gap: var(--space-2);
  border-radius: var(--radius-md);
}

.home-study-card:not(.mode-card--study-secondary) .mode-card__icon-wrap {
  width: 36px;
  height: 36px;
}

.home-study-card:not(.mode-card--study-secondary) .mode-card__title {
  font-size: var(--text-lg);
}

.home-study-card:not(.mode-card--study-secondary) .mode-card__desc {
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
}

.home-study-card:not(.mode-card--study-secondary) .mode-card__tag {
  margin-top: var(--space-2);
}

.mode-card--compact-home {
  padding: var(--space-3) var(--space-4);
  gap: var(--space-2);
  border-radius: var(--radius-md);
}

.mode-card--compact-home .mode-card__icon-wrap {
  width: 36px;
  height: 36px;
}

.mode-card--compact-home .mode-card__title {
  font-size: var(--text-md);
}

.mode-card--compact-home .mode-card__desc {
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
}

.mode-card--compact-home .mode-card__tag {
  margin-top: var(--space-2);
}

.mode-card--practice-primary {
  border-color: var(--color-primary);
  background: var(--color-surface-elevated);
  box-shadow: var(--shadow-card-hover);
}

.mode-card--practice-primary .mode-card__tag {
  background: var(--color-primary-soft);
  color: var(--color-primary-soft-text);
}

@media (prefers-reduced-motion: reduce) {
  .mode-card {
    transition: border-color var(--duration-fast) var(--ease-standard),
      box-shadow var(--duration-fast) var(--ease-standard);
  }
}

.mode-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-card-hover);
}

.home-meaning-block__lesson.mode-card:hover {
  background: var(--color-surface-elevated);
  border: none;
  border-color: transparent;
  box-shadow: none;
  transform: none;
}

@media (prefers-reduced-motion: no-preference) {
  .mode-card:hover {
    transform: translateY(-2px);
  }

  .home-meaning-block__lesson.mode-card:hover {
    transform: none;
  }
}

.mode-card:active {
  transform: scale(0.995);
}

.home-meaning-block__lesson.mode-card:active {
  transform: none;
}

.mode-card__icon-wrap {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.mode-card__icon-wrap svg {
  display: block;
}

.mode-card__body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.mode-card__title {
  font-weight: var(--font-weight-semibold);
  font-size: var(--text-xl);
  line-height: var(--leading-snug);
  color: var(--color-text);
}

.mode-card__desc {
  color: var(--color-text-muted);
  font-size: var(--text-md);
  line-height: var(--leading-snug);
}

.mode-card__tag {
  align-self: flex-start;
  margin-top: var(--space-3);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-pill);
  font-size: var(--text-2xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-wide);
  text-transform: capitalize;
  background: var(--color-primary-soft);
  color: var(--color-primary-soft-text);
}

.mode-card__tag--neutral {
  background: var(--color-surface-elevated);
  color: var(--color-text-muted);
  border: var(--border-width) solid var(--color-border);
}

.view-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.view-head--split {
  flex-direction: row;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
}

.view-head__center {
  flex: 1;
  text-align: right;
}

.view-title {
  margin: 0;
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-tight);
  line-height: var(--leading-tight);
}

.speed-bar {
  font-size: var(--text-md);
  margin-top: var(--space-1);
}

.speed-bar__value {
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-left: var(--space-2);
}

.practice-score-line {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  text-align: right;
}

/* Multiple-choice practice: quieter header so the card stays the focus */
.practice-view--mc-focus .view-title {
  font-size: clamp(1.2rem, 3.5vw, 1.6rem);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-muted);
}

.practice-view--mc-focus .practice-score-line {
  font-size: var(--text-xs);
  opacity: 0.85;
}

.practice-view--mc-focus .practice-anchor-line {
  font-size: var(--text-sm);
  opacity: 0.9;
}

.practice-view--mc-focus .back-btn {
  font-size: var(--text-sm);
  opacity: 0.88;
}

.view-head--speed .view-head__center {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-2);
}

.speed-hud {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-2);
  margin-top: var(--space-2);
  width: 100%;
}

.speed-hud__timer-row {
  width: 100%;
  display: flex;
  justify-content: flex-end;
}

.speed-timer-slot {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-surface-elevated);
  border: var(--border-width-thick) solid var(--color-border);
  font-variant-numeric: tabular-nums;
  box-shadow: var(--shadow-card);
}

.speed-timer-slot__value {
  font-size: var(--text-display);
  font-weight: var(--font-weight-extrabold);
  line-height: var(--leading-none);
  letter-spacing: var(--letter-tight);
  color: var(--color-text);
}

.speed-timer-slot__suffix {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: var(--letter-wide);
  color: var(--color-text-muted);
}

.speed-timer-slot--low {
  border-color: var(--color-danger);
  background: var(--color-danger-soft);
}

.speed-timer-slot--low .speed-timer-slot__value {
  color: var(--color-danger);
}

.speed-timer-slot--low .speed-timer-slot__suffix {
  color: var(--color-danger);
  opacity: 0.85;
}

.speed-hud__scores {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: var(--space-3) var(--space-4);
  font-size: var(--text-md);
}

.speed-hud__correct strong {
  color: var(--color-success);
}

.speed-hud__wrong strong {
  color: var(--color-danger);
}

.speed-main {
  margin-top: var(--space-2);
}

.speed-prompt {
  margin: 0 0 var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--letter-label);
  color: var(--color-text-muted);
}

.speed-verb-block {
  margin-bottom: var(--space-4);
}

.speed-item-kind {
  margin: 0 0 var(--space-2);
  font-size: var(--text-2xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: var(--letter-label);
  color: var(--color-text-muted);
}

.speed-item-kind--tricky {
  color: var(--color-primary);
}

.speed-verb {
  margin: 0;
  font-size: var(--text-5xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-tight);
  line-height: var(--leading-tight);
}

.speed-context {
  margin: var(--space-1) 0 0;
  font-size: var(--text-base);
}

.speed-tap-row {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.speed-tap-btn {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-md);
}

.speed-flash {
  margin: 0 0 var(--space-2);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  min-height: 1.25em;
}

.speed-card--ok {
  border-color: var(--color-success) !important;
  box-shadow: 0 0 0 1px var(--color-success-soft);
}

.speed-card--bad {
  border-color: var(--color-danger) !important;
  box-shadow: 0 0 0 1px var(--color-danger-soft);
}

.speed-continue-btn {
  margin-top: var(--space-3);
  width: 100%;
}

@media (min-width: 480px) {
  .speed-tap-row {
    flex-direction: row;
  }

  .speed-tap-btn {
    flex: 1;
  }
}

.btn {
  font: inherit;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  border-radius: var(--radius-md);
  border: var(--border-width) solid var(--color-border);
  padding: var(--space-2) var(--space-4);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  transition: var(--transition-interactive);
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

a.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  box-sizing: border-box;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn--ghost {
  background: transparent;
}

.btn--ghost:hover:not(:disabled) {
  background: var(--color-primary-soft);
  border-color: transparent;
  color: var(--color-primary-soft-text);
}

.btn--primary {
  background: var(--color-primary);
  color: #ffffff;
  border-color: transparent;
  font-weight: var(--font-weight-semibold);
}

.btn--primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
}

[data-theme="dark"] .btn--primary {
  color: #12101a;
}

.btn--choice {
  display: block;
  width: 100%;
  margin-bottom: var(--space-2);
  text-align: left;
  border-color: var(--color-border);
  background: var(--color-surface);
}

.btn--choice:hover:not(:disabled) {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
  color: var(--color-text);
}

.pattern-filter-banner {
  margin: var(--space-1) 0 0;
  font-size: var(--text-md);
  text-align: right;
}

.pattern-filter-banner strong {
  color: var(--color-text);
}

.practice-anchor-line {
  margin: var(--space-1) 0 0;
  font-size: var(--text-md);
  font-weight: var(--font-weight-semibold);
  text-align: right;
  color: var(--color-primary);
}

.learn-prep-subgroup {
  margin-top: var(--space-4);
}

.learn-prep-subgroup__title {
  margin: 0 0 var(--space-1);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
}

.card {
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--card-padding);
  box-shadow: var(--shadow-card);
}

.exercise-card {
  transition: border-color var(--duration-normal) var(--ease-standard),
    box-shadow var(--duration-normal) var(--ease-standard);
}

.exercise-card[data-phase="answering"] .practice-region--result {
  display: none;
}

.exercise-card[data-phase="reviewed"] .practice-region--result {
  display: block;
}

.exercise-card--answered {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-card), 0 0 0 1px var(--color-success-soft);
}

.exercise-card--answered .practice-region--answer {
  opacity: 0.72;
}

.exercise-card[data-exercise-kind="mc"].exercise-card--answered
  .practice-region--answer {
  opacity: 1;
}

.exercise-type-kicker {
  margin: 0 0 var(--space-1);
  font-size: var(--text-2xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.session-stats {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
}

.hint-host {
  margin-bottom: var(--space-3);
}

.hint-preview {
  margin: var(--space-2) 0 0;
  font-size: var(--text-md);
  line-height: var(--leading-snug);
}

/* Hint sits under the stem (all exercise types); spacing before optional divider */
.practice-region--question .hint-host {
  margin-top: var(--space-3);
}

.exercise-type-kicker--mc-lead {
  margin: 0 0 var(--space-2);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-tight);
  text-transform: none;
  color: var(--color-text);
  line-height: var(--leading-snug);
}

.exercise-card[data-exercise-kind="mc"] .practice-region--question > .region-label {
  margin-bottom: var(--space-3);
  font-size: var(--text-md);
  font-weight: var(--font-weight-semibold);
  letter-spacing: normal;
  text-transform: none;
  color: var(--color-text-muted);
}

.exercise-card[data-exercise-kind="mc"] .practice-region--question {
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-5);
}

.exercise-card[data-exercise-kind="mc"] .practice-region--question .hint-host {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px dashed var(--color-border);
}

.exercise-card[data-exercise-kind="mc"] .hint-btn--as-tip {
  display: inline-flex;
  align-self: flex-start;
  margin: 0;
  padding: var(--space-2) var(--space-2);
  font-size: var(--text-md);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary);
  background: transparent;
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-md);
  box-shadow: none;
  text-decoration: none;
  text-align: left;
}

.exercise-card[data-exercise-kind="mc"] .hint-btn--as-tip:hover:not(:disabled) {
  color: var(--color-primary-soft-text);
  background: var(--color-primary-soft);
  border-color: var(--color-primary);
  border-style: solid;
}

.exercise-card[data-exercise-kind="mc"] .hint-btn--as-tip:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  color: var(--color-text);
  border-style: solid;
}

.exercise-card[data-exercise-kind="mc"] .hint-btn--as-tip:disabled {
  opacity: 0.65;
  border-color: var(--color-border);
  cursor: default;
}

.exercise-card[data-exercise-kind="mc"] .practice-region--answer > .region-label--answer {
  margin-top: 0;
  margin-bottom: var(--space-2);
  font-size: var(--text-md);
  font-weight: var(--font-weight-semibold);
  letter-spacing: normal;
  text-transform: none;
  color: var(--color-text-muted);
}

.mc-sentence-block {
  margin: 0;
  padding: var(--space-4) var(--space-4);
  border-radius: var(--radius-md);
  border: var(--border-width) solid var(--color-border);
  background: var(--color-surface-elevated);
  box-shadow: inset 0 1px 0 rgb(255 255 255 / 0.04);
}

[data-theme="dark"] .mc-sentence-block {
  box-shadow: none;
}

.exercise-card[data-exercise-kind="mc"] .stem--mc-sentence {
  font-size: clamp(1.125rem, 2.8vw, 1.5rem);
  line-height: var(--leading-relaxed);
  font-weight: var(--font-weight-medium);
}

.exercise-card[data-exercise-kind="mc"] .gap--mc {
  min-width: 3.5rem;
  margin: 0 0.08em;
  padding: 0 0.12em 0.08em;
  border-radius: 0;
  border: none;
  border-bottom: var(--border-width-thick) solid var(--color-primary);
  background: linear-gradient(
    to bottom,
    transparent 55%,
    var(--color-primary-soft) 55% 100%
  );
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
  vertical-align: baseline;
}

.exercise-card[data-exercise-kind="mc"] .actions-host {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.exercise-card[data-exercise-kind="mc"] .actions-host .btn--choice {
  margin-bottom: 0;
  padding: var(--space-3) var(--space-4);
  min-height: 3.25rem;
  border-radius: var(--radius-md);
  font-size: var(--text-md);
  font-weight: var(--font-weight-medium);
  line-height: var(--leading-snug);
  border-width: var(--border-width);
  box-shadow: 0 1px 0 rgb(0 0 0 / 0.04);
}

.exercise-card[data-exercise-kind="mc"] .actions-host .btn--choice:hover:not(:disabled) {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
  box-shadow: 0 2px 8px rgb(0 0 0 / 0.06);
}

.exercise-card[data-exercise-kind="mc"] .actions-host .btn--choice:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}

.exercise-card[data-exercise-kind="mc"] .actions-host .btn--choice:active:not(:disabled) {
  transform: scale(0.995);
}

.exercise-card[data-exercise-kind="mc"][data-phase="reviewed"]
  .actions-host
  .btn--choice:disabled {
  cursor: default;
  transform: none;
  box-shadow: none;
}

.exercise-card[data-exercise-kind="mc"][data-phase="reviewed"]
  .actions-host
  .btn--choice--outcome-correct:disabled {
  opacity: 1;
  border-color: var(--color-success);
  background: var(--color-success-soft);
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
}

.exercise-card[data-exercise-kind="mc"][data-phase="reviewed"]
  .actions-host
  .btn--choice--outcome-wrong:disabled {
  opacity: 1;
  border-color: var(--color-danger);
  background: var(--color-danger-soft);
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
}

.exercise-card[data-exercise-kind="mc"][data-phase="reviewed"]
  .actions-host
  .btn--choice--outcome-idle:disabled {
  opacity: 0.4;
  border-color: var(--color-border);
  background: var(--color-surface);
  color: var(--color-text-muted);
}

@media (prefers-reduced-motion: reduce) {
  .exercise-card[data-exercise-kind="mc"] .actions-host .btn--choice:active:not(:disabled) {
    transform: none;
  }
}

.next-btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.region-label {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-wide);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.practice-region--question {
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: var(--border-width) solid var(--color-border);
}

.practice-region--answer {
  margin-bottom: var(--space-4);
}

.practice-region--result {
  margin-top: var(--space-2);
  padding-top: var(--space-4);
  border-top: var(--border-width) dashed var(--color-border);
}

.feedback-inner {
  min-height: 0;
}

.feedback-summary {
  margin: 0;
  padding-bottom: var(--space-3);
}

.feedback-summary .feedback-block--answer {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.feedback-compare--mc {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-top: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  border: var(--border-width) solid var(--color-border);
  background: var(--color-surface-elevated);
}

@media (min-width: 480px) {
  .feedback-compare--mc {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
  }
}

.feedback-compare__heading {
  margin: 0 0 var(--space-1);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-wide);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.feedback-compare__text {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  line-height: var(--leading-snug);
  color: var(--color-text);
}

.feedback-compare__text--key {
  color: var(--color-success);
}

.feedback--bad .feedback-compare__text--key {
  color: var(--color-success);
}

.feedback--mc .feedback-details-toggle--mc {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  border-color: transparent;
}

.feedback--mc .feedback-details-toggle--mc:hover:not(:disabled) {
  color: var(--color-text);
  background: var(--color-surface-elevated);
}

.exercise-card[data-exercise-kind="mc"] .nav-host {
  margin-top: var(--space-5);
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-border);
}

.exercise-card[data-exercise-kind="mc"] .nav-host .next-btn {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-md);
  font-weight: var(--font-weight-semibold);
}

@media (min-width: 480px) {
  .exercise-card[data-exercise-kind="mc"] .nav-host .next-btn {
    width: auto;
    min-width: 12rem;
  }
}

.feedback .result-title {
  margin: 0 0 var(--space-1);
  font-size: var(--text-3xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-tight);
}

.feedback-lead {
  margin: 0;
  color: var(--color-text-muted);
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
}

.feedback-block {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: var(--border-width) solid var(--color-border);
}

.feedback-block:first-of-type {
  margin-top: var(--space-3);
}

.feedback-details-toggle {
  margin: var(--space-1) 0 0;
  width: 100%;
  text-align: left;
  font-size: var(--text-md);
}

@media (min-width: 480px) {
  .feedback-details-toggle {
    width: auto;
  }
}

.feedback-details {
  margin-top: var(--space-2);
  padding-top: var(--space-3);
  border-top: var(--border-width) dashed var(--color-border);
}

.feedback-details .feedback-block:first-of-type {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.feedback-block__title {
  margin: 0 0 var(--space-1);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--letter-wide);
  color: var(--color-text-muted);
}

.feedback-title-inline {
  margin: 0 0 var(--space-1);
  font-weight: var(--font-weight-semibold);
}

.feedback-block .answer-key {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-success);
}

.feedback-block .translation {
  margin: 0;
  color: var(--color-text);
}

.stem {
  font-size: var(--text-xl);
  margin: 0;
  line-height: var(--leading-relaxed);
}

.stem-blank-lemma {
  font-size: 0.92em;
  font-weight: var(--font-weight-medium);
}

.gap {
  display: inline-block;
  min-width: 3.5rem;
  padding: 0 var(--space-1);
  border-bottom: var(--border-width-thick) solid var(--color-primary);
  text-align: center;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-muted);
}

.fill-blank-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: stretch;
}

.fill-inline-hint {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-danger);
}

.fill-row {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  align-items: center;
}

.input-text {
  flex: 1;
  min-width: 140px;
  font: inherit;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  border: var(--border-width) solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: var(--leading-normal);
}

.input-text:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}

.feedback {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: var(--border-width) solid var(--color-border);
}

.feedback--ok {
  border-left: 3px solid var(--color-success);
  padding-left: var(--space-3);
  margin-left: calc(-1 * var(--space-1));
}

.feedback--bad {
  border-left: 3px solid var(--color-danger);
  padding-left: var(--space-3);
  margin-left: calc(-1 * var(--space-1));
}

.feedback--ok .result-title {
  color: var(--color-success);
}

.feedback--bad .result-title {
  color: var(--color-danger);
}

.feedback .feedback-summary > .result-title {
  margin-bottom: var(--space-3);
}

.feedback-title {
  margin: var(--space-3) 0 var(--space-1);
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
}

.feedback-body {
  color: var(--color-text);
}

.feedback-body strong {
  color: var(--color-primary);
}

.hint {
  color: var(--color-text-muted);
}

.translation,
.answer-key {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
}

.nav-host {
  margin-top: var(--space-4);
}

.review-bar {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.review-bar__status {
  margin: 0;
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-tight);
}

.review-bar__status--ok {
  color: var(--color-success);
}

.review-bar__status--bad {
  color: var(--color-danger);
}

.review-bar__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2) var(--space-3);
}

.review-bar__feedback-slot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  max-width: 100%;
}

.review-bar__see-feedback {
  font-size: var(--text-sm);
  white-space: nowrap;
}

.review-bar__invite {
  font-size: var(--text-xs);
  line-height: var(--leading-snug);
  max-width: 16rem;
}

@media (min-width: 480px) {
  .review-bar__invite {
    max-width: none;
  }
}

.muted {
  color: var(--color-text-muted);
}

.pattern-list {
  list-style: none;
  padding: 0;
  margin: var(--space-2) 0 0;
}

.pattern-list li {
  margin-bottom: var(--space-1);
}

.pattern-list a {
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
}

.pattern-list a:hover {
  text-decoration: underline;
}

.breadcrumb {
  margin-bottom: var(--space-3);
}

.breadcrumb a {
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.pattern-detail h2 {
  margin-top: 0;
  font-size: var(--text-4xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-tight);
  line-height: var(--leading-tight);
}

.example-list {
  padding-left: 1.1rem;
}

.example-en {
  margin: var(--space-1) 0 var(--space-1);
  font-size: var(--text-md);
  line-height: var(--leading-snug);
}

.example-es {
  margin: 0 0 var(--space-3);
  color: var(--color-text-muted);
  font-size: var(--text-lg);
  line-height: var(--leading-snug);
}

.error,
.error-card {
  color: var(--color-danger);
}

.error-card h1 {
  margin-top: 0;
}

.error-card code {
  background: var(--color-surface-elevated);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  border: var(--border-width) solid var(--color-border);
}

/* ——— Learn: two-column index on desktop, compact cards, no saved progress ——— */
.learn-layout {
  max-width: var(--layout-max-width);
  margin: 0 auto;
  padding: var(--space-4) var(--space-4) var(--space-8);
}

.learn-layout--index {
  padding-top: var(--space-4);
  padding-bottom: var(--space-5);
  /* Sticky app bar: shell inner vertical padding ×2 + brand row (~2.5rem) + border */
  --learn-sticky-top: max(
    calc(0.75rem + 0.75rem + 2.5rem + 2px),
    calc(env(safe-area-inset-top, 0px) + 3.25rem)
  );
}

.learn-view-head {
  margin-bottom: var(--space-4);
}

.learn-breadcrumb {
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--color-text-muted);
}

.learn-breadcrumb--in-sidebar {
  margin-bottom: var(--space-2);
}

.learn-breadcrumb__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  row-gap: var(--space-1);
}

.learn-breadcrumb__item {
  display: inline-flex;
  align-items: center;
  font-size: inherit;
}

.learn-breadcrumb__item + .learn-breadcrumb__item::before {
  content: "/";
  margin: 0 var(--space-2) 0 0;
  color: var(--color-text-muted);
  opacity: 0.55;
  font-weight: var(--font-weight-normal);
  pointer-events: none;
  user-select: none;
}

.learn-breadcrumb__item--current {
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
}

.learn-breadcrumb a {
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  border-radius: var(--radius-sm);
}

.learn-breadcrumb a:hover {
  text-decoration: underline;
}

.learn-breadcrumb a:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.learn-breadcrumb__sep {
  opacity: 0.55;
  user-select: none;
}

.learn-body {
  min-width: 0;
}

/* Index: orientation (left) vs lessons (right) */
.learn-index-grid {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: 1fr;
  align-items: start;
}

@media (min-width: 900px) {
  .learn-index-grid {
    grid-template-columns: minmax(260px, min(34%, 320px)) minmax(0, 1fr);
    gap: clamp(1rem, 2.4vw, 1.65rem);
    align-items: start;
  }

  .learn-index-sidebar {
    position: sticky;
    top: var(--learn-sticky-top);
    align-self: start;
    max-height: calc(100vh - var(--learn-sticky-top) - var(--space-4));
    max-height: calc(100svh - var(--learn-sticky-top) - var(--space-4));
    overflow-y: auto;
    overscroll-behavior: contain;
    padding-bottom: var(--space-2);
    scrollbar-gutter: stable;
  }
}

.learn-index-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  min-width: 0;
}

.learn-index-sidebar__practice {
  width: 100%;
  box-sizing: border-box;
  text-align: center;
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  padding: var(--space-2) var(--space-3);
  margin-top: var(--space-1);
  text-decoration: none;
}

.learn-index-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.learn-hero {
  margin-bottom: 0;
}

.learn-hero__title {
  margin: 0 0 var(--space-1);
  font-size: clamp(var(--text-3xl), 2.8vw, 1.65rem);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-tight);
  line-height: var(--leading-tight);
  color: var(--color-text);
}

.learn-hero__subtitle {
  margin: 0;
  font-size: var(--text-md);
  line-height: var(--leading-relaxed);
  color: var(--color-text-muted);
  max-width: none;
}

.learn-hero__subtitle strong {
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
}

.learn-path-card {
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  border: var(--border-width) solid var(--color-border);
  background: var(--color-surface);
  box-shadow: none;
}

.learn-path-card--compact {
  margin-bottom: 0;
  margin-top: var(--space-1);
}

.learn-path-card__title {
  margin: 0 0 var(--space-1);
  font-size: var(--text-2xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-caps);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.learn-path-card__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.learn-path-card__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text);
  line-height: var(--leading-snug);
}

.learn-path-card__num {
  flex-shrink: 0;
  width: 1.05rem;
  text-align: right;
  font-weight: var(--font-weight-bold);
  font-variant-numeric: tabular-nums;
  font-size: var(--text-xs);
  color: var(--color-primary);
  line-height: var(--leading-snug);
  padding-top: 0.08em;
}

.learn-path-card__label {
  font-weight: var(--font-weight-medium);
  min-width: 0;
  flex: 1;
  overflow-wrap: break-word;
  word-break: break-word;
  hyphens: auto;
}

.learn-path-card__footnote {
  margin: var(--space-2) 0 0;
  padding-top: var(--space-2);
  border-top: var(--border-width) solid var(--color-border);
  font-size: var(--text-xs);
  line-height: var(--leading-snug);
  color: var(--color-text-muted);
}

.learn-lessons-head {
  margin: 0;
  padding-bottom: var(--space-2);
  border-bottom: var(--border-width) solid var(--color-border);
}

.learn-lessons-section-title {
  margin: 0 0 var(--space-1);
  font-size: var(--text-base);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-tight);
  line-height: var(--leading-tight);
  color: var(--color-text);
}

.learn-lessons-section-lead {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
  max-width: 36rem;
}

.learn-lessons-section-lead strong {
  color: var(--color-primary-soft-text);
  font-weight: var(--font-weight-bold);
}

.learn-lesson-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.learn-lesson-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  min-height: 0;
  border-radius: var(--radius-lg);
  border: var(--border-width) solid var(--color-border);
  background: var(--color-surface);
  box-shadow: var(--shadow-card);
  text-decoration: none;
  color: inherit;
  border-left-width: var(--border-width);
  transition: var(--transition-interactive);
}

.learn-lesson-card:focus-visible {
  outline: none;
  box-shadow: var(--shadow-card), var(--focus-ring);
  border-color: var(--color-primary);
}

.learn-lesson-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-card-hover);
}

.learn-lesson-card:active {
  box-shadow: var(--shadow-card);
}

.learn-lesson-card--start-here {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
  box-shadow: var(--shadow-card), 0 0 0 1px rgba(101, 87, 217, 0.12);
}

[data-theme="dark"] .learn-lesson-card--start-here {
  box-shadow: var(--shadow-card), 0 0 0 1px rgba(157, 143, 245, 0.2);
}

.learn-lesson-card--bonus {
  opacity: 0.96;
  border-style: dashed;
  background: var(--color-surface-elevated);
}

.learn-lesson-card--complement {
  background: var(--color-surface-elevated);
}

.learn-lesson-card--core-chain {
  border-left-width: 3px;
  border-left-color: var(--color-primary);
  padding-left: calc(var(--space-3) - var(--border-width-thick));
}

.learn-lesson-card--tricky {
  border-left-width: 3px;
  border-left-color: var(--color-danger);
  opacity: 0.98;
  padding-left: calc(var(--space-3) - var(--border-width-thick));
}

.learn-lesson-card__badge {
  flex-shrink: 0;
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-none);
  margin-top: var(--space-1);
}

.learn-lesson-card__badge--num {
  background: var(--color-surface-elevated);
  border: var(--border-width) solid var(--color-border-strong);
  color: var(--color-text);
}

.learn-lesson-card--start-here .learn-lesson-card__badge--num {
  background: var(--color-primary);
  border-color: transparent;
  color: #ffffff;
}

[data-theme="dark"] .learn-lesson-card--start-here .learn-lesson-card__badge--num {
  color: #12101a;
}

.learn-lesson-card__body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.learn-lesson-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1) var(--space-2);
}

.learn-lesson-card__title-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2);
}

.learn-lesson-card__title {
  font-weight: var(--font-weight-bold);
  font-size: var(--text-lg);
  letter-spacing: var(--letter-tight);
  color: var(--color-text);
  line-height: var(--leading-tight);
}

.learn-lesson-card__pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.learn-lesson-card__pill {
  display: inline-block;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-pill);
  font-size: var(--text-2xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-wide);
  text-transform: uppercase;
}

.learn-lesson-card__pill--start {
  background: var(--color-primary);
  color: #ffffff;
}

[data-theme="dark"] .learn-lesson-card__pill--start {
  color: #12101a;
}

.learn-lesson-card__pill--core {
  background: var(--color-primary-soft);
  color: var(--color-primary-soft-text);
}

.learn-lesson-card__pill--meaning {
  background: var(--color-danger-soft);
  color: var(--color-danger);
}

.learn-lesson-card__pill--bonus {
  background: var(--color-surface-elevated);
  color: var(--color-text-muted);
  border: var(--border-width) solid var(--color-border-strong);
}

.learn-lesson-card__pill--rule {
  background: rgba(5, 150, 105, 0.12);
  color: var(--color-success);
}

[data-theme="dark"] .learn-lesson-card__pill--rule {
  background: var(--color-success-soft);
}

.learn-lesson-card__desc {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
  color: var(--color-text-muted);
}

.learn-lesson-card__desc strong {
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
}

.learn-lesson-card__meta {
  margin: 0;
  font-size: var(--text-2xs);
  line-height: var(--leading-snug);
  color: var(--color-text-muted);
  opacity: 0.9;
}

.learn-lesson-card__chevron {
  flex-shrink: 0;
  display: block;
  width: 1.05rem;
  height: 1.05rem;
  color: var(--color-primary);
  margin-top: 0.12rem;
  opacity: 0.88;
}

@media (prefers-reduced-motion: no-preference) {
  .learn-lesson-card__chevron {
    transition: transform var(--duration-fast) var(--ease-standard),
      opacity var(--duration-fast) var(--ease-standard);
  }

  .learn-lesson-card:hover .learn-lesson-card__chevron,
  .learn-lesson-card:focus-visible .learn-lesson-card__chevron {
    transform: translateX(3px);
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .learn-lesson-card__chevron {
    transition: none;
  }

  .learn-lesson-card:hover .learn-lesson-card__chevron,
  .learn-lesson-card:focus-visible .learn-lesson-card__chevron {
    transform: none;
  }
}

.learn-detail-article {
  padding: var(--card-padding);
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.learn-lesson-page {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.learn-lesson-page__split {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.learn-lesson-page__primary {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  min-width: 0;
}

.learn-lesson-page__secondary {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  min-width: 0;
}

@media (min-width: 960px) {
  .learn-lesson-page__split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(220px, 280px);
    gap: var(--space-4) var(--space-5);
    align-items: start;
  }

  .learn-lesson-page__secondary {
    position: sticky;
    top: max(0.75rem, env(safe-area-inset-top, 0px));
    padding-bottom: var(--space-2);
  }

  .learn-lesson-page__secondary .learn-verb-compact__list {
    grid-template-columns: 1fr;
  }
}

/* Desktop: “What to notice” + “The rule” side by side */
.learn-lesson-row2 {
  display: grid;
  gap: var(--space-4);
  align-items: start;
}

@media (min-width: 900px) {
  .learn-lesson-row2 {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }
}

.learn-lesson-row2__col {
  min-width: 0;
}

.learn-lesson-page__header {
  margin-bottom: 0;
  padding-bottom: var(--space-3);
  border-bottom: var(--border-width) solid var(--color-border);
}

.learn-lesson-page__title {
  margin: 0 0 var(--space-2);
  font-size: clamp(var(--text-3xl), 3vw, 1.65rem);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-tight);
  line-height: var(--leading-tight);
}

.learn-lesson-page__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.learn-lesson-page__tags .learn-lesson-card__pill {
  margin: 0;
}

/* Lesson cards (semantic blocks) */
.learn-card {
  margin: 0;
  padding: var(--card-padding-sm);
  border-radius: var(--radius-md);
  border: var(--border-width) solid var(--color-border);
  background: var(--color-surface-elevated);
  box-shadow: none;
}

.learn-card--contrast {
  border-color: var(--color-border-strong);
  background: var(--color-surface);
}

.learn-card--border-strong {
  border-color: var(--color-primary);
  border-style: dashed;
  background: var(--color-surface);
}

.learn-card--related {
  background: var(--color-surface);
}

.learn-card--muted {
  background: var(--color-surface);
  border-style: dashed;
}

.learn-card--notice {
  border-left: 3px solid var(--color-primary);
  padding-left: calc(var(--space-4) - 2px);
}

.learn-card--rule {
  border-left: 3px solid var(--color-border-strong);
  padding-left: calc(var(--space-4) - 2px);
}

.learn-card--aside-block {
  padding: var(--space-3);
}

.learn-card--aside-block .learn-card__heading {
  margin-bottom: var(--space-2);
}

.learn-card--aside-block .learn-card__lede {
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
}

.learn-card__heading {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.learn-card__lede {
  margin: 0 0 var(--space-3);
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
}

.learn-card__lede.learn-prose--inline {
  margin-top: 0;
}

.learn-card__lede.learn-prose--inline strong {
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
}

.learn-card__body {
  font-size: var(--text-md);
  line-height: var(--leading-relaxed);
}

.learn-rule-hero {
  background: var(--color-primary-soft);
  border-color: transparent;
}

[data-theme="dark"] .learn-rule-hero {
  border-color: var(--color-border);
}

.learn-rule-hero__pedagogy {
  margin: 0 0 var(--space-2);
  font-size: clamp(var(--text-xl), 2.4vw, 1.35rem);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-tight);
  line-height: var(--leading-tight);
  color: var(--color-text);
}

.learn-rule-hero__formula {
  margin: 0 0 var(--space-2);
  font-size: clamp(var(--text-base), 2.2vw, 1.2rem);
  font-weight: var(--font-weight-bold);
  font-family: var(--font-mono);
  letter-spacing: var(--letter-tight);
  color: var(--color-text-muted);
  line-height: var(--leading-snug);
}

.learn-rule-hero__line {
  margin: 0 0 var(--space-3);
  font-size: var(--text-md);
  line-height: var(--leading-snug);
  color: var(--color-text-muted);
}

.learn-rule-hero__line strong {
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
}

.learn-rule-hero__mini {
  margin: 0;
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
}

.learn-rule-hero--compact {
  padding: var(--space-3) var(--space-4);
}

.learn-rule-hero--compact .learn-rule-hero__pedagogy {
  margin-bottom: var(--space-1);
  font-size: clamp(var(--text-lg), 2.1vw, 1.22rem);
}

.learn-rule-hero--compact .learn-rule-hero__formula {
  margin-bottom: var(--space-1);
}

.learn-rule-hero--compact .learn-rule-hero__line {
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
}

.learn-rule-hero--compact .learn-callout {
  margin-bottom: var(--space-2);
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
}

.learn-rule-hero--compact .learn-rule-hero__mini {
  padding: var(--space-2) var(--space-3);
}

.learn-rule-hero__mini-label {
  display: block;
  margin-bottom: var(--space-1);
  font-size: var(--text-2xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-label);
  text-transform: uppercase;
  color: var(--color-primary-soft-text);
}

.learn-example-line__en {
  margin: 0;
  font-size: var(--text-md);
  font-weight: var(--font-weight-medium);
  line-height: var(--leading-snug);
}

.learn-example-line__es {
  margin: var(--space-1) 0 0;
  font-size: var(--text-xs);
  line-height: var(--leading-snug);
}

.learn-callout {
  margin: 0 0 var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  font-size: var(--text-md);
  line-height: var(--leading-snug);
  border: var(--border-width) solid var(--color-success);
  background: var(--color-success-soft);
  color: var(--color-text);
}

.learn-callout--positive strong {
  color: var(--color-success);
}

[data-theme="dark"] .learn-callout--positive {
  border-color: var(--color-success);
}

.learn-example-feature-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: learn-ex;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.learn-example-feature {
  counter-increment: learn-ex;
  margin: 0;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  border: var(--border-width) solid var(--color-border);
  background: var(--color-surface);
  position: relative;
}

.learn-example-feature::before {
  content: counter(learn-ex);
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  width: 1.35rem;
  height: 1.35rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xs);
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-pill);
  background: var(--color-primary-soft);
  color: var(--color-primary-soft-text);
}

.learn-example-feature .learn-example-line__en {
  padding-right: 2rem;
}

.learn-details {
  margin-top: var(--space-3);
  border-radius: var(--radius-sm);
  border: var(--border-width) dashed var(--color-border-strong);
  background: var(--color-surface);
  overflow: hidden;
}

.learn-details__summary {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
}

.learn-details__summary::-webkit-details-marker {
  display: none;
}

.learn-details__summary::after {
  content: " ▾";
  font-size: 0.75em;
  opacity: 0.7;
}

.learn-details[open] .learn-details__summary::after {
  content: " ▴";
}

.learn-details__body {
  padding: 0 var(--space-3) var(--space-3);
  border-top: var(--border-width) solid var(--color-border);
}

.learn-example-more__list {
  margin: 0;
  padding-left: 1rem;
}

.learn-example-more__item {
  margin-bottom: var(--space-3);
}

.learn-example-more__item:last-child {
  margin-bottom: 0;
}

.learn-example-more__group {
  margin-bottom: var(--space-4);
}

.learn-example-more__group:last-child {
  margin-bottom: 0;
}

.learn-example-more__group-title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary);
}

.learn-tricky-stack {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.learn-tricky-block {
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  border: var(--border-width) solid var(--color-border);
  background: var(--color-surface);
}

.learn-tricky-block__verb {
  font-size: var(--text-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.learn-tricky-pair {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

@media (min-width: 640px) {
  .learn-tricky-pair {
    grid-template-columns: 1fr 1fr;
  }
}

.learn-tricky-pair__cell {
  padding: var(--space-2);
  border-radius: var(--radius-sm);
  background: var(--color-surface-elevated);
  border: var(--border-width) solid var(--color-border);
}

.learn-tricky-pair__label {
  display: block;
  margin-bottom: var(--space-1);
  font-size: var(--text-2xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.learn-tricky-block__diff {
  margin: var(--space-3) 0 0;
  font-size: var(--text-xs);
  line-height: var(--leading-snug);
  color: var(--color-text-muted);
}

.learn-tricky-block__diff strong {
  color: var(--color-text);
}

.learn-good-bad-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.learn-good-bad-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
}

@media (min-width: 720px) {
  .learn-good-bad-row {
    grid-template-columns: 1fr 1fr;
  }
}

.learn-good-bad-row__ok,
.learn-good-bad-row__bad {
  display: flex;
  gap: var(--space-2);
  align-items: flex-start;
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  border: var(--border-width) solid var(--color-border);
}

.learn-good-bad-row__ok {
  background: var(--color-success-soft);
  border-color: rgba(5, 150, 105, 0.25);
}

.learn-good-bad-row__bad {
  background: var(--color-danger-soft);
  border-color: rgba(220, 38, 38, 0.2);
}

.learn-good-bad-row__tag {
  flex-shrink: 0;
  font-weight: var(--font-weight-bold);
  color: var(--color-success);
}

.learn-good-bad-row__tag--bad {
  color: var(--color-danger);
}

.learn-good-bad-row__line {
  margin: 0;
  font-size: var(--text-md);
  line-height: var(--leading-snug);
}

.learn-good-bad-row__line--bad {
  opacity: 0.92;
}

.learn-good-bad-row__line strong {
  color: var(--color-text);
}

.learn-good-bad-row__es {
  margin: var(--space-1) 0 0;
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
}

.learn-phrase-chip-list {
  margin: var(--space-1) 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.learn-phrase-chip {
  display: inline-block;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-border-strong);
}

.learn-prep-subgroup--compact {
  margin-bottom: var(--space-3);
}

.learn-prep-subgroup--compact:last-child {
  margin-bottom: 0;
}

.learn-prep-subgroup--compact .learn-prep-subgroup__title {
  margin-bottom: var(--space-1);
  font-size: var(--text-sm);
}

.learn-verb-compact__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-1) var(--space-4);
}

@media (min-width: 520px) {
  .learn-verb-compact__list {
    grid-template-columns: repeat(2, 1fr);
  }
}

.learn-verb-compact__item {
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
}

.learn-verb-compact__item strong {
  color: var(--color-text);
}

.learn-details--verbs {
  margin-top: var(--space-3);
}

.learn-verb-chips {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  font-weight: var(--font-weight-medium);
}

/* Compact secondary “Related” links (lesson sidebar) */
.learn-related-compact {
  margin: 0;
  padding: var(--space-2) 0 0;
  border-top: var(--border-width) solid var(--color-border);
}

.learn-related-compact__label {
  margin: 0 0 var(--space-1);
  font-size: var(--text-2xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--letter-label);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.learn-related-compact__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.learn-related-compact__link {
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
  color: var(--color-primary);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
}

.learn-related-compact__link:hover {
  text-decoration: underline;
  text-underline-offset: 0.12em;
}

.learn-related-compact__link:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

.learn-cta--lesson {
  margin: 0;
  padding: var(--space-3) 0;
  border-top: none;
  flex-direction: column;
  align-items: stretch;
  gap: var(--space-2);
}

.learn-cta.learn-cta--lesson.learn-cta--sidebar {
  padding: 0;
  margin: 0;
  border-top: none;
}

.learn-cta.learn-cta--lesson.learn-cta--sidebar .learn-cta__btn {
  align-self: stretch;
  width: 100%;
  box-sizing: border-box;
  text-align: center;
}

.learn-cta--lesson .learn-cta__btn {
  align-self: flex-start;
}

.learn-cta--lesson .learn-cta__hint {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-snug);
  max-width: none;
}

.learn-detail-article__title {
  margin-top: 0;
}

.learn-section--pattern .learn-prose--inline {
  margin-top: var(--space-3);
}

.learn-section {
  margin-bottom: var(--space-5);
}

.learn-section__title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  line-height: var(--leading-tight);
}

.learn-prose {
  margin: 0;
  line-height: var(--leading-loose);
}

.learn-prose strong {
  color: var(--color-primary);
}

.learn-hint {
  margin: 0 0 var(--space-2);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
}

.learn-hint code {
  font-size: 0.875em;
  background: var(--color-surface-elevated);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  border: var(--border-width) solid var(--color-border);
}

.verb-list {
  margin: var(--space-2) 0 0;
  padding-left: var(--space-5);
}

.learn-cta {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: var(--border-width) solid var(--color-border);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-3);
}

.learn-cta__hint {
  margin: 0;
  font-size: var(--text-md);
  line-height: var(--leading-normal);
  max-width: 36rem;
}

.learn-cta__hint strong {
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
}

.learn-cta__btn {
  text-decoration: none;
  display: inline-block;
  text-align: center;
}

/* Lesson article CTAs (override generic .learn-cta spacing; comes later in cascade) */
.learn-cta.learn-cta--lesson {
  margin-top: 0;
  padding-top: var(--space-3);
  padding-bottom: 0;
  border-top: none;
}

.pattern-structure {
  margin: 0;
  font-size: var(--text-lg);
  font-weight: var(--font-weight-medium);
  line-height: var(--leading-snug);
}

.learn-verb-group {
  margin-bottom: var(--space-5);
  padding-bottom: var(--space-4);
  border-bottom: var(--border-width) solid var(--color-border);
}

.learn-verb-group:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.learn-verb-group__title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-base);
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.example-tag {
  margin: 0 0 var(--space-1);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--letter-wide);
  color: var(--color-text-muted);
}

@media (min-width: 560px) {
  .home-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1000px) {
  .home-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}