/* ============================================================
   VISUAL CURRICULUM  — discoveringdavinci.com
   Objects · Subjects · Setting — how Leonardo painted
   ============================================================ */

/* ── Concept block (key concepts per section) ─────────────── */
.concept-block {
  margin: 1.75rem 0;
  padding: 1rem 1.25rem;
  background: var(--color-surface-elevated, #1a1a1a);
  border: 1px solid var(--color-border, #2a2a2a);
  border-radius: 6px;
}

.concept-block h3 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display, 'Cinzel', serif);
  font-size: 0.95rem;
  color: var(--color-accent-primary, #d4af37);
  letter-spacing: 0.04em;
}

.concept-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.4rem;
}

.concept-list li {
  position: relative;
  padding-left: 1.3rem;
  font-size: 0.92rem;
  line-height: 1.55;
}

.concept-list li::before {
  content: '◆';
  position: absolute;
  left: 0;
  color: var(--color-accent-primary, #d4af37);
  font-size: 0.65rem;
  top: 0.35rem;
}

/* ── Work analysis cards ──────────────────────────────────── */
.work-analysis-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.work-card {
  padding: 1rem 1.15rem;
  background: var(--color-surface-elevated, #1a1a1a);
  border: 1px solid var(--color-border, #2a2a2a);
  border-radius: 6px;
  transition: border-color 0.2s;
}

.work-card:hover {
  border-color: rgba(212, 175, 55, 0.35);
}

.work-card h4 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display, 'Cinzel', serif);
  font-size: 0.92rem;
  color: var(--color-accent-primary, #d4af37);
}

.work-card .work-date {
  font-family: var(--font-ui, 'Inter', sans-serif);
  font-size: 0.8rem;
  color: var(--color-text-secondary, #b0a88a);
  margin: 0 0 0.5rem;
}

.work-card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.55;
}

/* ── Open questions panel ─────────────────────────────────── */
.open-questions {
  margin: 1.75rem 0;
  padding: 1rem 1.25rem;
  background: rgba(212, 175, 55, 0.04);
  border: 1px solid rgba(212, 175, 55, 0.15);
  border-radius: 6px;
}

.open-questions h3 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display, 'Cinzel', serif);
  font-size: 0.95rem;
  color: var(--color-accent-primary, #d4af37);
}

.open-questions ol {
  margin: 0;
  padding-left: 1.4rem;
}

.open-questions li {
  font-size: 0.92rem;
  line-height: 1.55;
  margin-bottom: 0.35rem;
}

/* ── Curriculum stage blocks ──────────────────────────────── */
.curriculum-stages {
  display: grid;
  gap: 0;
  margin: 1.5rem 0;
  counter-reset: stage;
}

.stage {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 0;
  border-bottom: 1px solid var(--color-border, #2a2a2a);
  counter-increment: stage;
}

.stage:last-child {
  border-bottom: none;
}

.stage-num {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem;
  font-family: var(--font-display, 'Cinzel', serif);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-accent-primary, #d4af37);
  background: rgba(212, 175, 55, 0.06);
}

.stage-content {
  padding: 0.75rem 1rem;
}

.stage-content h4 {
  margin: 0 0 0.25rem;
  font-size: 0.92rem;
  color: var(--color-text-primary, #e8e0d0);
}

.stage-content p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--color-text-secondary, #b0a88a);
}

/* ── Top quotes showcase ──────────────────────────────────── */
.top-quotes {
  margin: 2rem 0;
}

.top-quote {
  margin: 0.75rem 0;
  padding: 0.85rem 1.1rem 0.85rem 1.6rem;
  border-left: 2px solid var(--color-accent-primary, #d4af37);
  font-family: var(--font-body, 'Crimson Text', serif);
  font-style: italic;
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-primary, #e8e0d0);
}

.top-quote cite {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.82rem;
  font-style: normal;
  color: var(--color-text-secondary, #b0a88a);
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 640px) {
  .work-analysis-grid {
    grid-template-columns: 1fr;
  }
  .stage {
    grid-template-columns: 2.5rem 1fr;
  }
  .stage-num {
    font-size: 0.95rem;
  }
}