/**
 * PERSPECTIVE.CSS - Science of Seeing section styling
 * ====================================================
 * Styles for the Perspective deep-dive (linear, aerial, color, perception)
 * Extends the pattern established by last-supper.css / renaissance.css
 */

/* ── Explore Section ────────────────────────────── */
.perspective-explore {
  margin-top: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.perspective-explore > h2 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--color-text-primary);
  text-align: center;
  margin-bottom: var(--space-sm);
}

/* ── Quote Sidebar (pull-quote with attribution) ── */
.leo-quote {
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.06), rgba(139, 115, 85, 0.04));
  border-left: 4px solid var(--color-accent-primary);
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
  padding: var(--space-lg) var(--space-xl);
  margin: var(--space-xl) 0;
  font-style: italic;
}

.leo-quote p {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--color-text-primary);
  line-height: 1.65;
  margin: 0 0 var(--space-sm) 0;
}

.leo-quote .quote-source {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent-primary);
  font-style: normal;
}

/* ── Concept Triad (3-column concept comparison) ── */
.concept-triad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin: var(--space-xl) 0;
}

.concept-panel {
  background-color: var(--color-surface-elevated);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--border-radius);
  padding: var(--space-lg);
  text-align: center;
}

.concept-panel .concept-icon {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.concept-panel h4 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.concept-panel .concept-tag {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent-primary);
  margin-bottom: var(--space-sm);
}

.concept-panel p {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
  margin: 0;
}

/* ── Connection Map (linked topic nodes) ────────── */
.connection-map {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  justify-content: center;
  margin: var(--space-xl) 0;
}

.connection-node {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  background-color: var(--color-surface-elevated);
  border: 1px solid var(--color-border-subtle);
  border-radius: 2rem;
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all 0.25s ease;
}

.connection-node:hover {
  border-color: var(--color-accent-primary);
  color: var(--color-accent-primary);
  background-color: rgba(212, 175, 55, 0.06);
}

.connection-node .node-icon {
  font-size: 1rem;
}

/* ── Work Spotlight (painting analysis highlight) ── */
.work-spotlight {
  background-color: var(--color-surface-elevated);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--border-radius);
  padding: var(--space-xl);
  margin: var(--space-xl) 0;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.spotlight-badge {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.15), rgba(139, 115, 85, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.spotlight-body h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--color-text-primary);
  margin-bottom: var(--space-xs);
}

.spotlight-body .spotlight-meta {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent-primary);
  margin-bottom: var(--space-sm);
}

.spotlight-body p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* ── Principle Box (key scientific principle) ───── */
.principle-box {
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.04), rgba(10, 10, 10, 0.02));
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--border-radius);
  padding: var(--space-xl);
  margin: var(--space-xl) 0;
  text-align: center;
}

.principle-box .principle-label {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent-primary);
  margin-bottom: var(--space-sm);
}

.principle-box .principle-statement {
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
  line-height: 1.5;
}

.principle-box .principle-note {
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--color-text-tertiary);
  font-style: italic;
}

/* ── Responsive ─────────────────────────────────── */
@media (max-width: 768px) {
  .concept-triad {
    grid-template-columns: 1fr;
  }

  .work-spotlight {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .spotlight-badge {
    margin: 0 auto;
  }
}

@media (max-width: 480px) {
  .connection-map {
    flex-direction: column;
    align-items: stretch;
  }

  .connection-node {
    justify-content: center;
  }
}