/* Extra styles for teachable topic pages */
.big-idea {
  background: linear-gradient(135deg, #e8f7f3, #fff8f0);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.15rem 1.25rem;
  margin: 0 0 1.5rem;
}

.big-idea h2 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin: 0 0 0.65rem;
}

.term-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.85rem;
  margin: 1rem 0 1.75rem;
}

.term-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.9rem 1rem;
  box-shadow: var(--shadow);
}

.term-card .term-name {
  font-family: var(--font-display);
  font-weight: 650;
  font-size: 1.05rem;
  margin: 0 0 0.5rem;
  color: var(--teal-deep);
}

.term-card .term-diagram {
  margin: 0.5rem 0 0.65rem;
  background: var(--mist);
  border-radius: 10px;
  padding: 0.5rem;
  overflow-x: auto;
}

.term-card .term-en,
.term-card .term-rom {
  font-size: 0.88rem;
  margin: 0.35rem 0 0;
  line-height: 1.55;
}

.term-card .term-rom {
  color: #0a5c5f;
  background: #eef8f7;
  border-radius: 8px;
  padding: 0.45rem 0.55rem;
}

.case-box {
  background: #fff;
  border: 2px solid var(--teal);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin: 1.5rem 0;
  box-shadow: var(--shadow);
}

.case-box.practice {
  border-color: var(--coral);
}

.case-box h2,
.case-box h3 {
  font-family: var(--font-display);
  margin: 0 0 0.75rem;
  color: var(--teal-deep);
}

.case-box.practice h2,
.case-box.practice h3 {
  color: #b85a38;
}

.case-steps {
  margin: 0.75rem 0;
}

.case-steps .step {
  background: var(--mist);
  border-radius: 10px;
  padding: 0.75rem 0.9rem;
  margin-bottom: 0.5rem;
}

.case-steps .step strong {
  color: var(--teal-deep);
}

.final-line {
  background: var(--ok-bg);
  border-left: 4px solid var(--ok);
  border-radius: 10px;
  padding: 0.85rem 1rem;
  margin-top: 0.85rem;
  font-weight: 600;
}

.final-box,
.boxed-final {
  background: var(--ok-bg);
  border: 2px solid var(--ok);
  border-radius: 12px;
  padding: 0.9rem 1rem;
  margin-top: 0.85rem;
  font-weight: 650;
}

.teach-p {
  margin: 0 0 0.75rem;
  line-height: 1.7;
}

.teach-p:last-child {
  margin-bottom: 0;
}

.mini-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 0.25rem;
}

.section-diagram {
  margin: 0.85rem 0;
}