/**
 * BahnDeutsch — lesson article reading experience.
 * Light mode only. No external assets.
 */

.bd-lesson-article {
  --bd-lesson-gold: #b45309;
  --bd-lesson-gold-soft: #f6e6c8;
  --bd-lesson-ink: #1e293b;
  --bd-lesson-muted: #64748b;
  --bd-lesson-line: rgba(180, 83, 9, 0.16);
  --bd-lesson-radius: 20px;
  --bd-lesson-gutter: clamp(1.25rem, 5.5vw, 3.25rem);
  --bd-lesson-column: 52rem;
  counter-reset: bd-lesson-pair;
}

/* Canvas / no-chrome zeros page padding for apps. Reading views need a column. */
body.bd-lesson-article .bd-theme-content--lesson,
body.bd-canvas-site.bd-lesson-article .bd-theme-content--lesson,
body.bd-theme-no-chrome.bd-lesson-article .bd-theme-content--lesson {
  max-width: 100% !important;
  width: 100% !important;
  margin-inline: auto !important;
  padding: clamp(1.25rem, 4.5vw, 2.75rem) var(--bd-lesson-gutter) clamp(2.75rem, 6vw, 4.5rem) !important;
  box-sizing: border-box;
}

body.bd-lesson-article .bd-theme-content__inner--lesson,
body.bd-canvas-site.bd-lesson-article .bd-theme-content__inner--lesson {
  max-width: min(var(--bd-lesson-column), 100%) !important;
  width: 100% !important;
  margin-inline: auto !important;
  padding-inline: clamp(0.5rem, 2vw, 1rem);
  box-sizing: border-box;
}

body.bd-canvas-site.bd-lesson-article .bd-theme-article--lesson .entry-header,
body.bd-canvas-site.bd-lesson-article .bd-theme-lesson-hero {
  display: block !important;
}

body.bd-canvas-site.bd-lesson-article .bd-theme-article--lesson .entry-content {
  max-width: 100% !important;
  width: 100% !important;
  margin-inline: 0 !important;
  padding: clamp(1.35rem, 4vw, 2.25rem) clamp(1.2rem, 4.5vw, 2.35rem) !important;
  box-sizing: border-box;
}

.bd-lesson-progress {
  position: fixed;
  top: 0;
  inset-inline: 0;
  z-index: 1200;
  height: 3px;
  pointer-events: none;
  background: rgba(148, 163, 184, 0.18);
}

.bd-lesson-progress__bar {
  display: block;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #d97706 0%, #007aff 100%);
  transform: scaleX(0);
  transform-origin: left center;
}

html[dir="rtl"] .bd-lesson-progress__bar {
  transform-origin: right center;
}

.bd-lesson-toc {
  margin: 0 0 1.75rem;
  padding: 1.05rem 1.2rem 1.15rem;
  border: 1px solid var(--bd-lesson-line);
  border-radius: var(--bd-lesson-radius);
  background:
    linear-gradient(180deg, rgba(255, 252, 245, 0.95), #fff 70%);
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.05);
}

.bd-lesson-toc__title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0 0 0.7rem;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--bd-lesson-gold);
}

.bd-lesson-toc__title svg {
  flex: 0 0 auto;
}

.bd-lesson-toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.35rem;
}

.bd-lesson-toc a {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  padding: 0.42rem 0.55rem;
  border-radius: 10px;
  text-decoration: none;
  color: var(--bd-lesson-ink);
  font-weight: 600;
  font-size: 0.92rem;
  line-height: 1.45;
}

.bd-lesson-toc a:hover,
.bd-lesson-toc a:focus-visible {
  background: rgba(217, 119, 6, 0.08);
  color: #9a3412;
}

.bd-lesson-toc__n {
  flex: 0 0 1.4rem;
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--bd-lesson-gold);
  font-variant-numeric: tabular-nums;
}

.bd-lesson-pair {
  counter-increment: bd-lesson-pair;
  margin: 0 0 1.15rem;
  padding: 0;
  border: 1px solid var(--bd-lesson-line);
  border-radius: var(--bd-lesson-radius);
  background: #fff;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.05);
  overflow: hidden;
}

.bd-lesson-pair__de,
.bd-lesson-pair__fa {
  margin: 0;
  padding: 1.15rem 1.35rem 1.2rem;
}

.bd-lesson-pair__de {
  background:
    linear-gradient(180deg, #fffaf1 0%, #fff 100%);
}

.bd-lesson-pair__fa {
  display: block;
  border-top: 1px dashed rgba(180, 83, 9, 0.22);
  background: #fff;
}

.bd-lesson-pair__meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.55rem;
}

.bd-lesson-pair__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.1rem;
  height: 1.45rem;
  padding: 0 0.45rem;
  border-radius: 999px;
  background: #1e293b;
  color: #fff;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.bd-lesson-pair__badge--fa {
  background: #f1efe8;
  color: #7c5a1e;
  margin-bottom: 0.45rem;
}

.bd-lesson-pair__index {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--bd-lesson-gold);
  font-variant-numeric: tabular-nums;
}

.bd-lesson-pair__index::before {
  content: counter(bd-lesson-pair, decimal-leading-zero);
}

.bd-lesson-pair__tools {
  margin-inline-start: auto;
  display: inline-flex;
  gap: 0.35rem;
}

.bd-lesson-pair__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.28rem;
  min-height: 34px;
  min-width: 34px;
  padding: 0 0.7rem;
  border: 1px solid rgba(180, 83, 9, 0.22);
  border-radius: 999px;
  background: #fff;
  color: #9a3412;
  font: inherit;
  font-size: 0.75rem;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.16s ease, transform 0.16s ease, box-shadow 0.16s ease;
}

.bd-lesson-pair__btn svg {
  display: block;
  flex: 0 0 auto;
}

.bd-lesson-pair__btn:hover,
.bd-lesson-pair__btn:focus-visible {
  background: #fff7ed;
  box-shadow: 0 6px 16px rgba(180, 83, 9, 0.14);
}

.bd-lesson-pair__btn.is-active {
  background: #9a3412;
  border-color: #9a3412;
  color: #fff;
}

.bd-lesson-pair__btn.is-copied {
  background: #ecfdf5;
  border-color: #6ee7b7;
  color: #047857;
}

.bd-lesson-pair__de > p,
.bd-lesson-pair p[lang="de"],
.bd-lesson-pair p[lang="de-DE"] {
  margin: 0;
  padding: 0;
  background: none;
  border: 0;
  border-radius: 0;
  color: #0f172a;
  font-size: 1.18rem;
  font-weight: 600;
  line-height: 1.75;
  letter-spacing: 0.01em;
  direction: ltr;
  text-align: left;
  font-family: var(--bd-font-latin, Inter, "Segoe UI", sans-serif);
}

.bd-lesson-pair__fa > p {
  margin: 0;
  color: #334155;
  font-size: 1.02rem;
  line-height: 1.9;
}

.bd-restricted-preview p[lang="de"]:not(.bd-lesson-pair p),
.entry-content > p[lang="de"],
.bd-restricted-preview > p[lang="de"] {
  font-size: 1.12rem;
  line-height: 1.8;
  padding: 0.95rem 1.1rem;
  margin: 0 0 0.65rem;
  background: linear-gradient(180deg, #fffaf1, #fff7ea);
  border: 1px solid var(--bd-lesson-line);
  border-inline-start: 4px solid #d97706;
  border-radius: 14px;
  color: #0f172a;
  direction: ltr;
  text-align: left;
  font-family: var(--bd-font-latin, Inter, "Segoe UI", sans-serif);
}

.bd-theme-article--single .entry-content h2,
.bd-restricted-preview h2 {
  position: relative;
  margin-top: 2rem;
  margin-bottom: 0.85rem;
  padding-inline-start: 0.85rem;
  font-size: clamp(1.2rem, 2.4vw, 1.45rem);
  line-height: 1.4;
}

.bd-theme-article--single .entry-content h2::before,
.bd-restricted-preview h2::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: 0.28em;
  bottom: 0.28em;
  width: 4px;
  border-radius: 999px;
  background: linear-gradient(180deg, #d97706, #007aff);
}

.bd-theme-article--single .entry-content h3,
.bd-restricted-preview h3 {
  margin-top: 1.5rem;
  font-size: 1.12rem;
}

.bd-theme-article--single .entry-content ul,
.bd-theme-article--single .entry-content ol {
  padding-inline-start: 1.2em;
}

.bd-theme-article--single .entry-content li + li {
  margin-top: 0.45em;
}

.bd-theme-article .bd-restricted-content-placeholder--preview > .bd-restricted-content-placeholder__title {
  display: none;
}

.bd-membership-locked--lesson {
  position: relative;
  overflow: hidden;
  max-width: none;
  margin: 1.75rem 0 0;
  padding: 2rem 1.4rem 1.6rem;
  border: 1px solid rgba(180, 83, 9, 0.2);
  background:
    radial-gradient(circle at 12% 0%, rgba(253, 230, 138, 0.45), transparent 42%),
    radial-gradient(circle at 88% 100%, rgba(254, 215, 170, 0.35), transparent 38%),
    linear-gradient(165deg, #fffdf8 0%, #fff6e6 100%);
}

.bd-membership-locked--lesson::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  top: 0;
  height: 4px;
  background: linear-gradient(90deg, #d97706, #b45309 55%, #007aff);
}

.bd-membership-locked-kicker {
  margin: 0 0 0.45rem;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #b45309;
}

html[dir="rtl"] .bd-membership-locked-kicker,
.bd-dir-rtl .bd-membership-locked-kicker,
.bd-theme-dir-rtl .bd-membership-locked-kicker {
  text-transform: none;
  letter-spacing: 0;
}

.bd-membership-locked-perks {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 0 auto 1.25rem;
  padding: 0;
  list-style: none;
  max-width: 34rem;
  text-align: start;
}

.bd-membership-locked-perks li {
  display: flex;
  align-items: flex-start;
  gap: 0.45rem;
  padding: 0.7rem 0.75rem;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(180, 83, 9, 0.12);
  color: #4b3b22;
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.45;
}

.bd-membership-locked-perks svg {
  flex: 0 0 auto;
  margin-top: 0.08rem;
  color: #b45309;
}

.bd-membership-locked-login {
  display: inline-block;
  margin-top: 0.85rem;
  color: #9a3412;
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
}

.bd-membership-locked-login:hover,
.bd-membership-locked-login:focus-visible {
  text-decoration: underline;
}

.bd-theme-related {
  margin-top: 2.25rem;
}

.bd-theme-related__title {
  margin: 0 0 1rem;
  font-size: 1.15rem;
}

.bd-theme-related__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.bd-theme-related__card {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 1rem 1.05rem 1.1rem;
  border: 1px solid var(--bd-t-stroke-soft, rgba(137, 159, 191, 0.22));
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.78);
  text-decoration: none;
  color: inherit;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.05);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.bd-theme-related__card:hover,
.bd-theme-related__card:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 16px 32px rgba(15, 23, 42, 0.1);
  color: inherit;
}

.bd-theme-related__kicker {
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--bd-lesson-gold, #b45309);
  margin-bottom: 0.35rem;
}

.bd-theme-related__name {
  font-family: var(--bd-t-font-display, inherit);
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--bd-t-title, #0f172a);
}

@media (max-width: 900px) {
  .bd-membership-locked-perks,
  .bd-theme-related__grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .bd-lesson-pair__btn-label {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
  }

  .bd-lesson-pair__de > p,
  .bd-lesson-pair p[lang="de"],
  .bd-lesson-pair p[lang="de-DE"] {
    font-size: 1.08rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .bd-lesson-pair__btn,
  .bd-theme-related__card,
  .bd-lesson-progress__bar {
    transition: none;
  }
}