/* v2-only UI patterns — structurally different from v1 tile grids */

/* ——— Home: vertical level ladder (legacy v2 — disabled for newDesign home) ——— */

.home-levels:not(.home-levels-grid) {
  /* intentionally empty — .home-levels owned by home.css (index.dc.html) */
}

.home-level {
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: var(--space-lg);
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--level-color, var(--accent));
  transition: transform 0.15s, box-shadow 0.15s;
}

.home-level:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.home-level--blue { --level-color: var(--level-blue); }
.home-level--red { --level-color: var(--level-red); }
.home-level--yellow { --level-color: var(--level-yellow); }
.home-level--green { --level-color: var(--level-green); }
.home-level--purple { --level-color: var(--level-purple); }
.home-level--orange { --level-color: var(--level-orange); }
.home-level--violet { --level-color: var(--level-violet); }

.home-level__head {
  display: grid;
  grid-template-columns: 3rem 1fr auto;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--border);
}

.home-level__index {
  font-family: var(--font-display);
  font-size: 1.625rem;
  font-weight: 700;
  color: var(--level-color, var(--accent));
  line-height: 1;
}

.home-level__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--text-primary);
}

.home-level__sub {
  margin: 0.125rem 0 0;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
}

.home-level__hub {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--level-color, var(--accent));
  text-decoration: none;
  white-space: nowrap;
}

.home-level__hub:hover {
  text-decoration: underline;
}

.lesson-stream__grid--home {
  margin-bottom: var(--space-md);
  grid-template-columns: 1fr;
  gap: 0.5rem;
}

.lesson-stream__grid--home > li {
  min-width: 0;
}

.lesson-stream__grid--home .lesson-card {
  width: 100%;
  min-height: 3.25rem;
  padding: 0.625rem 0.875rem;
}

.lesson-stream__grid--home .lesson-card__title {
  font-size: 0.875rem;
  line-height: 1.35;
}

.lesson-card--home .lesson-card__num {
  background: color-mix(in srgb, var(--level-color, var(--accent)) 12%, var(--bg-page));
  color: var(--level-color, var(--accent));
}

.home-level--blue .lesson-card--home:hover .lesson-card__num,
.home-level--blue .lesson-card--home:focus-visible .lesson-card__num { background: var(--level-blue); color: #fff; }
.home-level--red .lesson-card--home:hover .lesson-card__num { background: var(--level-red); color: #fff; }
.home-level--yellow .lesson-card--home:hover .lesson-card__num { background: var(--level-yellow); color: #fff; }
.home-level--green .lesson-card--home:hover .lesson-card__num { background: var(--level-green); color: #fff; }
.home-level--purple .lesson-card--home:hover .lesson-card__num { background: var(--level-purple); color: #fff; }
.home-level--orange .lesson-card--home:hover .lesson-card__num { background: var(--level-orange); color: #fff; }
.home-level--violet .lesson-card--home:hover .lesson-card__num { background: var(--level-violet); color: #fff; }

.home-level__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding-top: var(--space-md);
  border-top: 1px dashed var(--border);
}

.home-level__more {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.home-level__more:hover {
  color: var(--level-color, var(--accent));
}

.home-level__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  justify-content: flex-end;
}

.practice-chip--review {
  border-color: color-mix(in srgb, var(--level-color, var(--accent)) 35%, var(--border));
  color: var(--level-color, var(--accent));
}

.home-level .practice-chip--review {
  border-color: color-mix(in srgb, var(--level-color) 35%, var(--border));
  color: var(--level-color);
}

.home-extras-v2 {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  margin: var(--space-xl) 0;
}

.home-extras-v2__ctas {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding: var(--space-lg);
  background: var(--accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, var(--border));
  border-radius: var(--radius-lg);
}

.home-extras-v2__cta {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}

.home-extras-v2__cta:hover {
  text-decoration: underline;
}

.home-extras-v2__group {
  padding: var(--space-md) 0;
  border-top: 1px solid var(--border);
}

.home-extras-v2__group summary {
  cursor: pointer;
  list-style: none;
}

.home-extras-v2__group summary::-webkit-details-marker {
  display: none;
}

.home-extras-v2__heading {
  margin: 0 0 var(--space-md);
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
}

.home-extras-v2__group[open] .home-extras-v2__heading {
  margin-bottom: var(--space-sm);
}

.home-extras-v2__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.level-ladder {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.level-step {
  display: grid;
  grid-template-columns: 3.5rem 1fr auto;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}

.level-step:hover {
  border-color: var(--step-color, var(--accent));
  box-shadow: var(--shadow);
  transform: translateX(4px);
  text-decoration: none;
}

.level-step__index {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--step-color, var(--accent));
  line-height: 1;
}

.level-step__body {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
  min-width: 0;
}

.level-step__body strong {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  color: var(--text-primary);
}

.level-step__body span {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.level-step__arrow {
  color: var(--text-muted);
  font-size: 1.125rem;
  transition: color 0.15s, transform 0.15s;
}

.level-step:hover .level-step__arrow {
  color: var(--step-color, var(--accent));
  transform: translateX(3px);
}

.level-step--blue { --step-color: var(--level-blue); }
.level-step--red { --step-color: var(--level-red); }
.level-step--yellow { --step-color: var(--level-yellow); }
.level-step--green { --step-color: var(--level-green); }
.level-step--purple { --step-color: var(--level-purple); }
.level-step--orange { --step-color: var(--level-orange); }
.level-step--violet { --step-color: var(--level-violet); }

/* ——— Level pages: intro strip ——— */

.page-intro {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 2px solid var(--border);
}

.page-intro__eyebrow {
  margin: 0 0 var(--space-sm);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.page-intro h1 {
  margin-bottom: var(--space-sm);
}

.page-intro__lead {
  max-width: 40rem;
  font-size: 1.0625rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg) !important;
}

.page-intro__lead em {
  font-style: normal;
  font-weight: 600;
  color: var(--text-primary);
}

.page-intro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.page-intro__checklist {
  margin: 0;
  max-width: 40rem;
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.page-intro__checklist a {
  font-weight: 700;
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.page-intro__checklist a:hover {
  color: var(--text-primary);
}

.page-intro__actions .page-intro__lead {
  margin: var(--space-md) 0 0;
  max-width: 40rem;
}

/* ——— Lessons: spaced card stream ——— */

.lesson-stream {
  margin-bottom: var(--space-xl);
}

.lesson-stream__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.lesson-stream__head h2 {
  font-family: var(--font-display);
  font-size: 1.375rem;
  margin: 0;
}

.lesson-stream__head span {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
}

.lesson-stream__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr));
  gap: var(--space-sm);
  list-style: none;
  margin: 0;
  padding: 0;
}

.lesson-stream__grid--hub {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.lesson-stream__review {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px dashed var(--border);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.lesson-stream__review-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: 0.875rem 1rem;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--level-color, var(--accent));
  text-decoration: none;
  background: color-mix(in srgb, var(--level-color, var(--accent)) 7%, var(--bg-page));
  border: 1px solid color-mix(in srgb, var(--level-color, var(--accent)) 22%, var(--border));
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: background 0.15s, border-color 0.15s, transform 0.15s, box-shadow 0.15s;
}

.lesson-stream__review-link:hover {
  background: color-mix(in srgb, var(--level-color, var(--accent)) 12%, var(--bg-page));
  border-color: color-mix(in srgb, var(--level-color, var(--accent)) 35%, var(--border));
  box-shadow: var(--shadow);
  transform: translateY(-1px);
  text-decoration: none;
}

.lesson-stream__review-go {
  flex-shrink: 0;
  font-size: 1.125rem;
  line-height: 1;
  opacity: 0.75;
}

.lesson-stream__note {
  margin-top: var(--space-md);
  padding: var(--space-lg);
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--level-color, var(--accent)) 6%, var(--bg-page)) 0%,
    var(--bg-page) 100%
  );
  border: 1px solid color-mix(in srgb, var(--level-color, var(--accent)) 18%, var(--border));
  border-left: 4px solid var(--level-color, var(--accent));
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.lesson-stream__note-text {
  margin: 0;
  max-width: 42rem;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--text-secondary);
}

.lesson-stream__note-text a {
  font-weight: 700;
  color: var(--level-color, var(--accent));
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.lesson-stream__note-text a:hover {
  color: var(--text-primary);
}

[data-level='blue'] { --level-color: var(--level-blue); }
[data-level='red'] { --level-color: var(--level-red); }
[data-level='yellow'] { --level-color: var(--level-yellow); }
[data-level='green'] { --level-color: var(--level-green); }
[data-level='purple'] { --level-color: var(--level-purple); }
[data-level='orange'] { --level-color: var(--level-orange); }
[data-level='violet'] { --level-color: var(--level-violet); }

/* Carousel clips hover lift — leave room inside viewport */
.lesson-stream .hub-carousel__viewport {
  padding-block: 4px;
}

.lesson-stream .hub-carousel__slide {
  overflow: visible;
}

.lesson-card {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  min-height: 3.75rem;
  padding: 0.875rem 1rem;
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s, transform 0.15s;
}

.lesson-card:hover,
.lesson-card:focus-visible {
  border-color: var(--accent);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
  text-decoration: none;
  position: relative;
  z-index: 1;
}

.lesson-card__num {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 2.125rem;
  height: 2.125rem;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.8125rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.lesson-card:hover .lesson-card__num {
  background: var(--accent);
  color: #fff;
}

.lesson-card__title {
  flex: 1;
  min-width: 0;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text-primary);
}

.lesson-card__go {
  flex-shrink: 0;
  color: var(--text-muted);
  font-size: 1rem;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.15s, transform 0.15s, color 0.15s;
}

.lesson-card:hover .lesson-card__go {
  opacity: 1;
  transform: translateX(0);
  color: var(--accent);
}

.lesson-card--spotlight {
  border-color: var(--accent);
  background: linear-gradient(135deg, var(--accent-soft) 0%, var(--bg-page) 100%);
}

.lesson-card--spotlight .lesson-card__num {
  background: var(--accent);
  color: #fff;
}

.lesson-card--more {
  border-style: dashed;
  background: transparent;
  box-shadow: none;
}

.lesson-card--more .lesson-card__num {
  background: transparent;
  border: 1px dashed var(--border-strong);
  color: var(--text-muted);
}

/* ——— Practice: friendly action cards ——— */

.practice-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.practice-card {
  display: flex;
  flex-direction: column;
  padding: var(--space-lg);
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.practice-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  margin-bottom: var(--space-md);
  border-radius: var(--radius);
  background: var(--accent-soft);
  color: var(--accent);
}

.practice-card__icon svg {
  width: 1.125rem;
  height: 1.125rem;
}

.practice-card h3 {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  margin: 0 0 0.25rem;
}

.practice-card > p {
  margin: 0 0 var(--space-md);
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.45;
}

.practice-card > .hub-carousel {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}

.practice-card > .hub-carousel .hub-carousel__range--live {
  display: none;
  margin: 0;
}

.practice-card > .hub-carousel .hub-carousel__viewport {
  flex: 1;
}

.practice-card > .hub-carousel .hub-carousel__footer {
  margin-top: auto;
  flex-shrink: 0;
}

.practice-card .hub-carousel__slide.practice-card__chips {
  margin-top: 0;
  align-content: flex-start;
}

.practice-card__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.practice-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.4375rem 0.75rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  text-decoration: none;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}

.practice-chip:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

/* ——— Video: category chips (replaces card grid) ——— */

.category-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
}

.category-chip {
  display: inline-flex;
  flex-direction: column;
  gap: 0.25rem;
  min-width: 10rem;
  flex: 1 1 12rem;
  max-width: 16rem;
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.category-chip:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}

.category-chip strong {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  color: var(--text-primary);
}

.category-chip span {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ——— Video topics: media rows (not tiles) ——— */

.media-catalog {
  margin-bottom: var(--space-xl);
}

.media-catalog__title {
  font-family: var(--font-display);
  font-size: 1.375rem;
  margin-bottom: var(--space-xs);
}

.media-catalog__desc {
  margin: 0 0 var(--space-lg);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.media-row {
  display: grid;
  grid-template-columns: 5.5rem 1fr auto;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-page);
  text-decoration: none;
  color: inherit;
  margin-bottom: var(--space-sm);
  transition: border-color 0.15s, box-shadow 0.15s;
}

.media-row:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
}

.media-row__thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--accent-soft) 0%, var(--bg-muted) 100%);
  color: var(--accent);
  font-size: 1.125rem;
}

.media-row__title {
  display: block;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--text-primary);
  margin-bottom: 0.125rem;
}

.media-row__meta {
  display: block;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.media-row__go {
  color: var(--text-muted);
  font-size: 1.125rem;
}

.media-row:hover .media-row__go {
  color: var(--accent);
}

/* ——— Level nav footer ——— */

.path-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: var(--fs-btn);
  font-weight: 700;
}

.path-nav a {
  text-decoration: none;
}

.path-nav a:hover {
  text-decoration: none;
  filter: brightness(0.95);
}

/* ——— Lesson page (v2 showcase) ——— */

.lesson-masthead {
  position: relative;
  margin-bottom: var(--space-xl);
  padding: clamp(1.25rem, 3vw, 2rem);
  overflow: hidden;
  text-align: left;
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--level-color, var(--accent)) 7%, var(--bg-page)) 0%,
    var(--bg-page) 55%
  );
  border: 1px solid color-mix(in srgb, var(--level-color, var(--accent)) 14%, var(--border));
  border-radius: calc(var(--radius-lg) + 4px);
  box-shadow:
    0 1px 2px rgb(28 25 23 / 4%),
    0 12px 32px color-mix(in srgb, var(--level-color, var(--accent)) 8%, transparent);
}

.lesson-masthead::before {
  content: '';
  position: absolute;
  inset: 0 auto 0 0;
  width: 5px;
  background: var(--level-color, var(--accent));
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.lesson-masthead::after {
  content: '';
  position: absolute;
  top: -3rem;
  right: -2rem;
  width: 9rem;
  height: 9rem;
  border-radius: 50%;
  background: color-mix(in srgb, var(--level-color, var(--accent)) 10%, transparent);
  pointer-events: none;
}

.lesson-masthead__row {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(1rem, 2.5vw, 1.5rem);
  align-items: center;
}

.lesson-masthead__num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 4rem;
  height: 4rem;
  font-family: var(--font-display);
  font-size: 1.625rem;
  font-weight: 700;
  line-height: 1;
  color: #fff;
  background: var(--level-color, var(--accent));
  border-radius: 1.125rem;
  box-shadow:
    0 1px 0 rgb(255 255 255 / 22%) inset,
    0 8px 20px color-mix(in srgb, var(--level-color, var(--accent)) 35%, transparent);
}

.lesson-masthead__main {
  min-width: 0;
}

.lesson-masthead__level {
  margin: 0 0 0.4rem;
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--level-color, var(--accent));
}

.lesson-masthead__lesson {
  margin: 0 0 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text-muted);
}

.lesson-masthead__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.625rem, 3.5vw, 2.25rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.page-masthead {
  margin-bottom: var(--space-xl);
}

.page-masthead__extra {
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid color-mix(in srgb, var(--level-color, var(--accent)) 12%, var(--border));
}

.page-masthead__extra p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--text-secondary);
}

.page-masthead__extra p + p {
  margin-top: var(--space-sm);
}

.page-masthead__checklist {
  margin: 0;
}

.lesson-masthead--no-num .lesson-masthead__row {
  grid-template-columns: 1fr;
}

.home-masthead .home-hero__intro {
  margin: 0;
}

.home-masthead .home-hero__new {
  margin: var(--space-sm) 0 0;
  font-weight: 600;
  color: var(--text-primary);
}

.lesson-block {
  margin-bottom: var(--space-lg);
  padding: var(--space-lg);
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.lesson-block__head {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.lesson-block__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 0.5rem;
}

.lesson-block h2,
.lesson-block__title {
  margin: 0 0 var(--space-md);
  font-family: var(--font-display);
  font-size: 1.25rem;
}

.lesson-block__title--inline {
  font-size: 1.0625rem;
  margin-bottom: var(--space-sm);
}

.lesson-ask-lead {
  margin: var(--space-md) 0 var(--space-xs);
  font-size: 0.9375rem;
  text-align: center;
  color: var(--text-secondary);
}

.lesson-ask {
  margin: 0;
  font-size: 1rem;
  text-align: center;
  color: var(--text-primary);
}

.lesson-ask__note {
  font-weight: 400;
  font-style: normal;
  color: var(--text-muted);
}

.lesson-prose {
  margin: 0 0 var(--space-lg);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

.lesson-prose--after {
  margin-top: var(--space-md);
  margin-bottom: 0;
}

.lesson-tip p {
  margin: 0;
}

.lesson-block--video {
  background: var(--bg-muted);
}

.lesson-block--video .embed-video {
  margin-bottom: 0;
  border: 3px solid var(--bg-page);
  box-shadow: var(--shadow);
}

.lesson-equation {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 0.75rem;
  margin-bottom: var(--space-sm);
  padding: 0.875rem 1rem;
  background: var(--bg-muted);
  border-radius: var(--radius);
  border-left: 3px solid var(--accent);
}

.lesson-equation__math {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
}

.lesson-equation__say {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.lesson-equation__say::before {
  content: '→';
  margin-right: 0.35rem;
  color: var(--accent);
  font-weight: 700;
}

.lesson-tip {
  margin: var(--space-md) 0 0;
  padding: var(--space-md);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  background: color-mix(in srgb, var(--accent) 8%, var(--bg-page));
  border: 1px dashed color-mix(in srgb, var(--accent) 35%, var(--border));
  border-radius: var(--radius);
}

.lesson-tip strong {
  color: var(--accent);
}

.lesson-dialogue {
  display: grid;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

.lesson-dialogue__line {
  display: grid;
  grid-template-columns: 2rem 1fr;
  gap: var(--space-sm);
  align-items: center;
  padding: 0.625rem 0.75rem;
  background: var(--bg-muted);
  border-radius: var(--radius);
}

.lesson-dialogue__who {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--accent-level, var(--level-blue));
  background: color-mix(in srgb, var(--accent-level, var(--level-blue)) 12%, var(--bg-page));
  border-radius: 50%;
}

.lesson-dialogue__line--b .lesson-dialogue__who {
  color: var(--accent-level, var(--level-blue));
  background: color-mix(in srgb, var(--accent-level, var(--level-blue)) 12%, var(--bg-page));
}

.lesson-dialogue__text {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--text-primary);
  line-height: 1.45;
}

.lesson-practice {
  border: 2px solid color-mix(in srgb, var(--accent) 25%, var(--border));
}

.lesson-practice .data-table-wrap {
  margin-bottom: 0;
}

.lesson-practice .data-table th {
  background: var(--accent-soft);
  color: var(--text-primary);
}

.lesson-practice .data-table tbody tr:hover {
  background: color-mix(in srgb, var(--accent) 5%, var(--bg-page));
}

.lesson-next {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  text-align: center;
}

.lesson-next__link {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
}

.lesson-next__link:hover {
  text-decoration: underline;
  text-underline-offset: 0.15em;
}

.lesson-path {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.lesson-path__link {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
}

.lesson-path__link:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
  text-decoration: none;
}

.lesson-path__link--next {
  text-align: right;
  align-items: flex-end;
}

.lesson-path__label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.lesson-path__title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--accent);
}

.lesson-path__arrow {
  font-size: 1.125rem;
  color: var(--accent);
}

.lesson-footer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px dashed var(--border);
}

@media (max-width: 768px) {
  .lesson-masthead {
    padding: var(--space-lg);
  }

  .lesson-masthead__row {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .lesson-masthead__num {
    width: 3.25rem;
    height: 3.25rem;
    font-size: 1.375rem;
  }

  .lesson-path {
    grid-template-columns: 1fr;
  }

  .lesson-path__link--next {
    text-align: left;
    align-items: flex-start;
  }
}

@media (max-width: 768px) {
  .lesson-stream__grid {
    grid-template-columns: 1fr;
  }

  .lesson-stream__grid--hub {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .practice-cards {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .lesson-stream__grid--hub {
    grid-template-columns: 1fr;
  }
}

/* ——— Quiz page ——— */

.quiz-page {
  width: 100%;
  max-width: min(100%, 1180px);
  margin: 0 auto;
}

.quiz-masthead {
  margin-bottom: var(--space-lg);
}

.quiz-masthead__row {
  grid-template-columns: auto 1fr auto;
}

.quiz-masthead .lesson-masthead__title {
  font-size: clamp(1.55rem, 2.4vw, 2.05rem);
}

.quiz-masthead__write {
  align-self: center;
  flex-shrink: 0;
  padding: 0.375rem;
  background: var(--bg-page);
  border: 1px solid color-mix(in srgb, var(--level-color, var(--accent)) 14%, var(--border));
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.quiz-sheet {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  width: 100%;
}

.quiz-row {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.quiz-column {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  min-width: 0;
}

.quiz-row > .quiz-part {
  display: flex;
  flex-direction: column;
  min-width: 0;
  width: 100%;
}

.quiz-part {
  min-width: 0;
  width: 100%;
  padding: 1.5rem 1.75rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  box-sizing: border-box;
}

.quiz-part__label {
  margin: 0 0 0.75rem;
  padding: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--accent-level, var(--level-blue));
  border-bottom: 1px solid var(--border);
}

.quiz-part__directions {
  margin: 0 0 1rem;
  padding: 0;
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--text-secondary);
}

.quiz-part__content {
  min-width: 0;
  width: 100%;
  max-width: none;
  align-self: stretch;
}

.quiz-question-list {
  list-style: none;
  margin: 0;
  padding: 0;
  width: 100%;
  max-width: none;
  border: none;
  border-radius: 0;
  overflow: visible;
  align-self: stretch;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.quiz-part__directions em {
  font-style: italic;
}

.quiz-question {
  margin: 0;
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--text-primary);
  border: none;
  border-bottom: none;
  border-radius: 8px;
  background: var(--bg-muted);
}

.quiz-question:last-child {
  border-bottom: 0;
}

.quiz-question:nth-child(even) {
  background: color-mix(in srgb, var(--accent-level, var(--level-blue)) 6%, var(--bg-muted));
}

.quiz-conjugation-heading {
  margin: 0 0 var(--space-md);
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  text-align: center;
}

.quiz-conjugation-wrap {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.quiz-conjugation-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.quiz-conjugation-table th,
.quiz-conjugation-table td {
  padding: 0.625rem 0.875rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
}

.quiz-conjugation-table th {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  background: color-mix(in srgb, var(--level-color, var(--accent)) 5%, var(--bg-page));
}

.quiz-conjugation-table tbody tr:last-child td {
  border-bottom: 0;
}

.quiz-picture-prompts {
  width: 100%;
  border-collapse: collapse;
}

.quiz-picture-prompts__prompt {
  padding: 0.5rem 0.75rem 0.5rem 0;
  vertical-align: middle;
  font-size: 0.9375rem;
}

.quiz-picture-prompts__image {
  width: 140px;
  padding: 0.35rem 0;
  vertical-align: middle;
  text-align: right;
}

.quiz-picture-prompts__image img {
  display: block;
  width: 100%;
  max-width: 140px;
  max-height: 140px;
  object-fit: contain;
  margin-left: auto;
}

.quiz-free-write {
  display: grid;
  gap: var(--space-md);
}

.quiz-free-write__item {
  display: grid;
  grid-template-columns: 1.75rem 1fr;
  gap: var(--space-sm);
  align-items: end;
}

.quiz-free-write__num {
  font-weight: 600;
  color: var(--text-primary);
}

.quiz-free-write__line {
  min-height: 2rem;
  border-bottom: 1px solid color-mix(in srgb, var(--text-primary) 25%, var(--border));
}

.quiz-footer {
  margin-top: var(--space-sm);
}

.quiz-footer__card {
  display: grid;
  gap: var(--space-lg);
  padding: clamp(1rem, 2.5vw, 1.5rem) clamp(1.25rem, 3vw, 2rem);
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--level-color, var(--accent)) 6%, var(--bg-page)) 0%,
    var(--bg-page) 72%
  );
  border: 1px solid color-mix(in srgb, var(--level-color, var(--accent)) 16%, var(--border));
  border-radius: var(--radius-lg);
  box-shadow:
    0 1px 2px rgb(28 25 23 / 4%),
    0 10px 28px color-mix(in srgb, var(--level-color, var(--accent)) 7%, transparent);
}

@media (min-width: 768px) {
  .quiz-footer__card {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: var(--space-xl);
  }
}

.quiz-footer__score-block {
  display: grid;
  gap: var(--space-sm);
  min-width: 0;
}

.quiz-footer__total {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.quiz-footer__score {
  margin: 0;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 1px 0 rgb(255 255 255 / 70%) inset;
}

.quiz-footer__links {
  display: grid;
  gap: 0.625rem;
  justify-items: start;
}

@media (min-width: 768px) {
  .quiz-footer__links {
    justify-items: end;
    text-align: right;
  }
}

.quiz-footer__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--level-color, var(--accent));
  text-decoration: none;
  transition: color 0.15s, gap 0.15s;
}

.quiz-footer__link::after {
  content: '→';
  font-size: 0.875rem;
  opacity: 0.55;
  transition: opacity 0.15s, transform 0.15s;
}

.quiz-footer__link:hover {
  text-decoration: underline;
  text-underline-offset: 0.18em;
}

.quiz-footer__link:hover::after {
  opacity: 1;
  transform: translateX(2px);
}

.quiz-footer__link--back {
  color: var(--text-secondary);
}

.quiz-footer__link--back::after {
  content: none;
}

.quiz-footer__link--back::before {
  content: '←';
  font-size: 0.875rem;
  opacity: 0.55;
  transition: opacity 0.15s, transform 0.15s;
}

.quiz-footer__link--back:hover {
  color: var(--text-primary);
}

.quiz-footer__link--back:hover::before {
  opacity: 1;
  transform: translateX(-2px);
}

@media (max-width: 959px) {
  .quiz-masthead__row {
    grid-template-columns: auto 1fr;
    grid-template-areas:
      'num title'
      'icon icon';
  }

  .quiz-masthead__row .lesson-masthead__num {
    grid-area: num;
  }

  .quiz-masthead__row .lesson-masthead__main {
    grid-area: title;
  }

  .quiz-masthead__write {
    grid-area: icon;
    justify-self: start;
    margin-top: var(--space-sm);
  }

  .quiz-part {
    padding: var(--space-md);
  }
}

@media print {
  .quiz-row {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .quiz-part {
    break-inside: avoid;
    box-shadow: none;
  }

  .quiz-footer__card {
    box-shadow: none;
  }

  .quiz-masthead__write {
    box-shadow: none;
  }
}

@media (max-width: 768px) {
  .quiz-masthead .quiz-masthead__row {
    grid-template-columns: auto 1fr;
    grid-template-areas:
      'num title'
      'icon icon';
    gap: var(--space-md);
  }
}

/* ——— Troubleshooting page ——— */

.troubleshooting-page {
  width: 100%;
  max-width: 52rem;
}

.troubleshooting-intro {
  margin: 0;
}

.troubleshooting-tips {
  display: grid;
  gap: var(--space-md);
}

.troubleshooting-tip {
  padding: var(--space-lg);
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.troubleshooting-tip__body {
  font-size: 0.96875rem;
  line-height: 1.6;
  color: var(--text-primary);
}

.troubleshooting-tip__body p {
  margin: 0;
}

.troubleshooting-tip__body strong {
  font-weight: 700;
}

.troubleshooting-tip__body em {
  font-style: italic;
}

.troubleshooting-tip__body a {
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 0.15em;
}