/* LBFL clean lesson design system
   Stage 31.6 correction: styles are scoped only to explicit Botany index/lesson wrappers.
   No global h1/h2/table override. No framework styling. */

:root {
  --lbfl-bg: #030712;
  --lbfl-panel: rgba(15, 23, 42, 0.82);
  --lbfl-panel-2: rgba(8, 47, 73, 0.72);
  --lbfl-line: rgba(148, 163, 184, 0.22);
  --lbfl-text: #e5edf9;
  --lbfl-muted: #bed0e7;
  --lbfl-cyan: #22d3ee;
  --lbfl-teal: #2dd4bf;
  --lbfl-amber: #fbbf24;
  --lbfl-lime: #bef264;
  --lbfl-rose: #fb7185;
  --lbfl-shadow: 0 18px 48px rgba(0, 0, 0, 0.34);
}

.lbfl-botany-index,
.lbfl-botany-lesson {
  color: var(--lbfl-text);
  font-size: clamp(1rem, 2.7vw, 1.12rem);
  line-height: 1.75;
}

.lbfl-botany-index *,
.lbfl-botany-lesson * {
  box-sizing: border-box;
}

.lbfl-botany-index a,
.lbfl-botany-lesson a {
  color: #67e8f9;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

.lbfl-clean-hero,
.lbfl-clean-card,
.lbfl-figure,
.lbfl-exam-focus,
.lbfl-practice-strip {
  margin: 1.15rem 0;
  padding: clamp(1rem, 4vw, 1.45rem);
  border: 1px solid var(--lbfl-line);
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(2, 6, 23, 0.96));
  box-shadow: var(--lbfl-shadow);
}

.lbfl-clean-hero {
  border-color: rgba(45, 212, 191, 0.30);
  background:
    radial-gradient(circle at top left, rgba(45, 212, 191, 0.16), transparent 34%),
    linear-gradient(135deg, rgba(8, 47, 73, 0.80), rgba(2, 6, 23, 0.96));
}

.lbfl-clean-kicker {
  display: inline-flex;
  margin-bottom: 0.65rem;
  padding: 0.28rem 0.62rem;
  border: 1px solid rgba(45, 212, 191, 0.35);
  border-radius: 999px;
  color: #99f6e4;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.lbfl-clean-hero h2,
.lbfl-botany-index .lbfl-clean-hero h2,
.lbfl-botany-lesson .lbfl-clean-hero h2 {
  margin: 0.15rem 0 0.65rem;
  color: #f8fafc;
  font-size: clamp(1.85rem, 8vw, 3.25rem);
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.lbfl-botany-index h2,
.lbfl-botany-lesson h2 {
  margin: 2rem 0 0.85rem;
  color: #f8fafc;
  font-size: clamp(1.45rem, 5.6vw, 2.2rem);
  line-height: 1.2;
}

.lbfl-botany-index h3,
.lbfl-botany-lesson h3 {
  margin: 1.35rem 0 0.55rem;
  color: #ccfbf1;
  font-size: clamp(1.12rem, 4.3vw, 1.55rem);
  line-height: 1.25;
}

.lbfl-clean-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1rem;
  margin: 1rem 0;
}

.lbfl-clean-card {
  margin: 0;
  min-height: 100%;
}

.lbfl-clean-card h3 {
  margin-top: 0.15rem;
}

.lbfl-tag {
  display: inline-flex;
  margin-bottom: 0.55rem;
  padding: 0.24rem 0.55rem;
  border: 1px solid rgba(45, 212, 191, 0.30);
  border-radius: 999px;
  color: #99f6e4;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.lbfl-mini-flow {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.7rem;
  margin: 1rem 0;
}

.lbfl-mini-flow span {
  display: block;
  padding: 0.75rem;
  border: 1px solid rgba(34, 211, 238, 0.24);
  border-radius: 16px;
  background: rgba(8, 47, 73, 0.50);
  color: #e0f2fe;
  text-align: center;
  font-weight: 800;
}

.lbfl-figure {
  overflow: hidden;
}

.lbfl-figure figcaption {
  margin-top: 0.8rem;
  color: var(--lbfl-muted);
  font-size: 0.95rem;
  text-align: center;
}

.lbfl-figure svg {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 18px;
  background: rgba(2, 6, 23, 0.55);
}

.lbfl-table-wrap {
  margin: 1rem 0 1.25rem;
  overflow-x: auto;
  border: 1px solid var(--lbfl-line);
  border-radius: 16px;
  background: rgba(15, 23, 42, 0.70);
}

.lbfl-table-wrap table {
  width: 100%;
  min-width: 520px;
  margin: 0 !important;
  border-collapse: collapse;
  display: table !important;
  box-shadow: none !important;
  border: 0 !important;
  background: transparent !important;
}

.lbfl-table-wrap th,
.lbfl-table-wrap td {
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
  color: var(--lbfl-text);
  vertical-align: top;
}

.lbfl-table-wrap th {
  background: rgba(51, 65, 85, 0.88);
  color: #f8fafc;
  font-weight: 900;
}

.lbfl-exam-focus {
  border-left: 6px solid var(--lbfl-amber);
}

.lbfl-practice-strip {
  border-left: 6px solid var(--lbfl-lime);
}

.lbfl-compact-list {
  margin: 0.55rem 0 0;
  padding-left: 1.15rem;
}

.lbfl-compact-list li {
  margin: 0.35rem 0;
}

@media (max-width: 640px) {
  .lbfl-clean-hero,
  .lbfl-clean-card,
  .lbfl-figure,
  .lbfl-exam-focus,
  .lbfl-practice-strip {
    border-radius: 18px;
    padding: 1rem;
  }

  .lbfl-clean-grid,
  .lbfl-mini-flow {
    grid-template-columns: 1fr;
  }

  .lbfl-clean-hero h2,
  .lbfl-botany-index .lbfl-clean-hero h2,
  .lbfl-botany-lesson .lbfl-clean-hero h2 {
    font-size: clamp(1.55rem, 9vw, 2.45rem);
  }

  .lbfl-botany-index,
  .lbfl-botany-lesson {
    font-size: 1rem;
    line-height: 1.72;
  }
}