/* =============================================
   FSB Showcase - About Page Styles
   ============================================= */

/* --- Page Header --- */
.about-hero {
  padding: calc(var(--nav-height) + 48px) 0 48px;
  text-align: center;
}

.about-hero h1 {
  margin-bottom: 16px;
}

.about-hero p {
  max-width: 640px;
  margin: 0 auto;
  font-size: 1.1rem;
}

.about-hero .rec-note {
  display: inline-block;
  margin-top: 20px;
  padding: 8px 20px;
  background: rgba(255, 107, 53, 0.08);
  border: 1px solid rgba(255, 107, 53, 0.2);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.about-hero .rec-note strong {
  color: var(--primary);
}

/* --- Recreation sections --- */
.recreation-section {
  padding: 48px 0;
}

.recreation-section .section-header {
  margin-bottom: 32px;
}

.recreation-section .section-header h2 {
  font-size: clamp(1.25rem, 2.5vw, 1.75rem);
}

.recreation-section .section-header p {
  font-size: 0.95rem;
}

.recreation-section:nth-child(even) {
  background: var(--bg-card);
}

/* --- Architecture Diagram --- */
.arch-section {
  padding: 64px 0;
}

.arch-diagram {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.arch-row {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.arch-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px 24px;
  text-align: center;
  min-width: 160px;
  transition: all var(--transition-base);
}

.arch-box:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.arch-box.primary {
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
}

.arch-box h4 {
  font-size: 0.9rem;
  margin-bottom: 4px;
}

.arch-box p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.arch-box .arch-icon {
  font-size: 1.25rem;
  color: var(--primary);
  margin-bottom: 8px;
}

.arch-arrow {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.25rem;
}

.arch-arrow.horizontal {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  min-width: 40px;
}

.arch-arrows-row {
  gap: 40px;
  justify-content: center;
}

.arch-arrows-row > div {
  text-align: center;
}

.arch-arrows-row-wide {
  gap: 80px;
}

.arch-arrows-row-wide > div {
  text-align: center;
}

/* --- Action Library --- */
.action-library {
  padding: 64px 0;
  background: var(--bg-card);
}

.action-categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}

.action-category {
  background: var(--bg-body);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
}

.action-category h4 {
  font-size: 0.9rem;
  color: var(--primary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.action-category h4 i {
  font-size: 0.85rem;
}

.action-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.action-tag {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  font-family: 'SF Mono', 'Monaco', monospace;
  font-size: 0.7rem;
  color: var(--text-secondary);
}

/* --- Light mode overrides --- */
[data-theme="light"] .action-tag {
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.1);
  color: var(--text-secondary);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .action-categories {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .about-hero {
    padding-top: calc(var(--nav-height) + 32px);
    padding-bottom: 32px;
  }

  .action-categories {
    grid-template-columns: 1fr;
  }

  .arch-row {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }

  .arch-arrows-row,
  .arch-arrows-row-wide {
    gap: 12px;
  }

  .arch-arrow.horizontal {
    transform: rotate(90deg);
  }
}

@media (max-width: 480px) {
  .action-category {
    padding: 16px;
  }

  .arch-box {
    min-width: 0;
    width: 100%;
    padding: 14px 16px;
  }

  .arch-section {
    padding: 40px 0;
  }

  .action-library {
    padding: 40px 0;
  }
}