/* Módulo 1 — Sistema cardiovascular (Biologia) */
@import url("../../../css/lesson-modules.css");

.lesson {
  --lesson-teal: #00a896;
  --lesson-teal-soft: rgba(0, 168, 150, 0.12);
  --lesson-coral: #ef5d68;
  --lesson-coral-soft: rgba(239, 93, 104, 0.12);
  --artery: #c62828;
  --vein: #1565c0;
  --callout-border: #7e57c2;
}

[data-theme="dark"] .lesson {
  --lesson-teal-soft: rgba(0, 168, 150, 0.18);
  --lesson-coral-soft: rgba(239, 93, 104, 0.15);
}

.lesson-meta {
  margin: 0 0 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--lesson-teal);
}

.lesson-badge {
  display: inline-block;
  margin: 0 0 1rem;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #fff;
  background: var(--lesson-teal);
  border-radius: 999px;
}

.lesson h1 {
  border-bottom: 3px solid var(--lesson-teal);
  padding-bottom: 0.5rem;
}

.lesson-toc {
  margin: 1.5rem 0 2rem;
  padding: 1rem 1.15rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  border-left: 4px solid var(--lesson-teal);
}

.lesson-toc strong {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
}

.lesson-toc ol {
  margin: 0;
  padding-left: 1.25rem;
}

.lesson-toc a {
  color: var(--text);
  text-decoration: none;
}

.lesson-toc a:hover {
  color: var(--lesson-teal);
  text-decoration: underline;
}

.lesson-hero {
  margin: 1.5rem 0;
  padding: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.lesson-hero__visual {
  min-height: 180px;
  background: linear-gradient(
      135deg,
      var(--lesson-teal-soft) 0%,
      var(--bg) 50%,
      rgba(21, 101, 192, 0.08) 100%
    ),
    var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem;
  font-size: 3rem;
  line-height: 1;
}

.lesson-hero__caption {
  margin: 0;
  padding: 0.85rem 1rem;
  font-size: 0.85rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.lesson-questions {
  margin: 1.25rem 0 2rem;
  padding: 1.15rem 1.25rem;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.lesson-questions h2 {
  margin-top: 0 !important;
  font-size: 1rem !important;
  border-bottom: none !important;
  color: var(--lesson-teal);
}

.lesson-questions ol {
  margin: 0.5rem 0 0;
  padding-left: 1.25rem;
}

.lesson-questions li {
  margin-bottom: 0.65rem;
}

.lesson-layout {
  display: grid;
  gap: 1.25rem;
  align-items: start;
}

@media (min-width: 720px) {
  .lesson-layout--glossary {
    grid-template-columns: 1fr minmax(200px, 32%);
  }
}

.lesson-glossary {
  margin: 0;
  padding: 1rem 1.1rem;
  font-size: 0.9rem;
  background: var(--lesson-teal-soft);
  border-radius: var(--radius);
  border-left: 4px solid var(--lesson-teal);
}

.lesson-glossary dt {
  font-weight: 700;
  color: var(--lesson-teal);
}

.lesson-glossary dd {
  margin: 0.35rem 0 0;
  color: var(--text);
}

.lesson-glossary--coral {
  border-left-color: var(--lesson-coral) !important;
  background: var(--lesson-coral-soft);
}

.lesson-glossary--coral dt {
  color: var(--lesson-coral) !important;
}

.lesson-figure--tight {
  margin-top: 0;
}

.term-a {
  color: var(--artery);
  font-weight: 600;
}

.term-v {
  color: var(--vein);
  font-weight: 600;
}

.callout {
  margin: 1.5rem 0;
  padding: 1rem 1.15rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  border-left: 4px solid var(--callout-border);
  background: rgba(126, 87, 194, 0.08);
}

[data-theme="dark"] .callout {
  background: rgba(126, 87, 194, 0.12);
}

.callout__title {
  margin: 0 0 0.5rem;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--callout-border);
}

.lesson-figure {
  margin: 1.5rem 0;
  padding: 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface);
}

.lesson-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.lesson-figure__placeholder {
  min-height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  text-align: center;
  font-size: 0.9rem;
  color: var(--muted);
  background: repeating-linear-gradient(
      -45deg,
      var(--bg),
      var(--bg) 8px,
      var(--surface) 8px,
      var(--surface) 16px
    );
}

.lesson-figure figcaption {
  margin: 0;
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

.lesson-summary {
  margin-top: 2.5rem;
  padding: 1.25rem 1.35rem;
  border-radius: var(--radius);
  background: var(--lesson-coral-soft);
  border: 1px solid rgba(239, 93, 104, 0.35);
}

.lesson-summary h2 {
  margin-top: 0 !important;
  border-bottom-color: rgba(239, 93, 104, 0.4) !important;
}

.lesson-kicker {
  display: inline-block;
  margin-bottom: 0.35rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--lesson-coral);
}

.lesson-back {
  margin-top: 2rem;
  font-size: 0.9rem;
  color: var(--muted);
}