/* ============================================
   NAGASHIRO GROUP - Knowledge Sub-Pages
   Breadcrumb, FAQ Accordion, Page Hero, Related
   ============================================ */

/* --- Breadcrumb --- */
.breadcrumb {
  padding: 100px 0 0;
  background: var(--color-bg-gray);
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  font-family: var(--font-display);
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--color-text-light);
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.breadcrumb-list a {
  color: var(--color-text-light);
  transition: color var(--transition);
}

.breadcrumb-list a:hover {
  color: var(--color-primary);
}

.breadcrumb-list .breadcrumb-sep {
  color: var(--color-border);
  font-size: 10px;
}

.breadcrumb-list .breadcrumb-current {
  color: var(--color-navy);
  font-weight: 500;
}

/* --- Page Hero --- */
.page-hero {
  background: var(--color-bg-gray);
  padding: 48px 0 64px;
}

.page-hero-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: flex-start;
  gap: 32px;
}

.page-hero-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  flex-shrink: 0;
  color: var(--color-primary);
  background: #ffffff;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.page-hero-icon svg {
  width: 48px;
  height: 48px;
}

.page-hero-text h1 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 600;
  color: var(--color-navy);
  line-height: 1.4;
  margin-bottom: 12px;
  letter-spacing: 1px;
}

.page-hero-text p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-text);
  max-width: 640px;
}

/* --- FAQ Section --- */
.faq-section {
  padding: 80px 0;
}

.faq-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.faq-section-title {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 3px;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.faq-section-heading {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 500;
  color: var(--color-navy);
  margin-bottom: 40px;
  letter-spacing: 1px;
}

/* Accordion */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item:first-child {
  border-top: 1px solid var(--color-border);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 24px 0;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 500;
  color: var(--color-navy);
  line-height: 1.6;
  transition: color 0.2s ease;
  gap: 16px;
}

.faq-question:hover {
  color: var(--color-primary);
}

.faq-question-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  position: relative;
  color: var(--color-primary);
}

.faq-question-icon::before,
.faq-question-icon::after {
  content: '';
  position: absolute;
  background: currentColor;
  transition: transform 0.3s ease;
}

.faq-question-icon::before {
  top: 50%;
  left: 4px;
  width: 16px;
  height: 2px;
  transform: translateY(-50%);
}

.faq-question-icon::after {
  top: 4px;
  left: 50%;
  width: 2px;
  height: 16px;
  transform: translateX(-50%);
}

.faq-item.is-open .faq-question-icon::after {
  transform: translateX(-50%) rotate(90deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-answer-inner {
  padding: 0 0 24px;
  font-size: 15px;
  line-height: 2;
  color: var(--color-text);
}

.faq-answer-inner p {
  margin-bottom: 12px;
}

.faq-answer-inner p:last-child {
  margin-bottom: 0;
}

.faq-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px dashed var(--color-border);
}

.faq-meta span {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--color-text-light);
}

/* --- Related Categories --- */
.related-section {
  padding: 80px 0;
  background: var(--color-bg-gray);
}

.related-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.related-title {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 3px;
  color: var(--color-primary);
  text-transform: uppercase;
  text-align: center;
  margin-bottom: 12px;
}

.related-heading {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 500;
  color: var(--color-navy);
  text-align: center;
  margin-bottom: 40px;
  letter-spacing: 1px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.related-card {
  display: block;
  background: #ffffff;
  border-radius: 4px;
  padding: 32px;
  transition: all var(--transition);
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.related-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
  color: var(--color-primary);
}

.related-card-icon svg {
  width: 36px;
  height: 36px;
}

.related-card h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 4px;
}

.related-card .related-card-en {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--color-text-light);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.related-card p:last-child {
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-text);
}

.related-card .related-card-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--color-primary);
}

/* --- Hub Hero --- */
.hub-hero {
  background: var(--color-bg-gray);
  padding: 48px 0 64px;
  text-align: center;
}

.hub-hero-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.hub-hero-label {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 4px;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.hub-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 600;
  color: var(--color-navy);
  line-height: 1.4;
  margin-bottom: 8px;
  letter-spacing: 2px;
}

.hub-hero-en {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 3px;
  color: var(--color-text-light);
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hub-hero-intro {
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-text);
  max-width: 640px;
  margin: 0 auto;
}

/* --- Hub Grid --- */
.hub-section {
  padding: 80px 0;
}

.hub-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.hub-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.hub-card {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 28px 24px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.hub-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
  border-color: var(--color-primary);
}

.hub-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  flex-shrink: 0;
  color: var(--color-primary);
}

.hub-card-icon svg {
  width: 40px;
  height: 40px;
}

.hub-card-body {
  flex: 1;
  min-width: 0;
}

.hub-card-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 2px;
  line-height: 1.4;
}

.hub-card-title-en {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--color-text-light);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.hub-card-desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.hub-card-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  font-family: var(--font-display);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 1px;
  color: var(--color-primary);
  background: rgba(45, 106, 79, 0.08);
  padding: 4px 10px;
  border-radius: 12px;
}

.hub-card-arrow {
  position: absolute;
  bottom: 16px;
  right: 16px;
  font-size: 18px;
  color: var(--color-primary);
  opacity: 0;
  transform: translateX(-8px);
  transition: all 0.3s ease;
}

.hub-card:hover .hub-card-arrow {
  opacity: 1;
  transform: translateX(0);
}

/* --- CTA Section --- */
.knowledge-cta {
  padding: 80px 0;
  text-align: center;
}

.knowledge-cta-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.knowledge-cta h2 {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 500;
  color: var(--color-navy);
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.knowledge-cta p {
  font-size: 15px;
  color: var(--color-text);
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .breadcrumb {
    padding-top: 80px;
  }

  .page-hero {
    padding: 32px 0 48px;
  }

  .page-hero-inner {
    flex-direction: column;
    gap: 20px;
  }

  .page-hero-icon {
    width: 60px;
    height: 60px;
  }

  .page-hero-icon svg {
    width: 36px;
    height: 36px;
  }

  .faq-section {
    padding: 48px 0;
  }

  .faq-question {
    font-size: 15px;
    padding: 20px 0;
  }

  .related-section {
    padding: 48px 0;
  }

  .related-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .knowledge-cta {
    padding: 48px 0;
  }

  /* Hub responsive */
  .hub-hero {
    padding: 32px 0 48px;
  }

  .hub-section {
    padding: 48px 0;
  }

  .hub-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .hub-card {
    padding: 20px 16px;
  }

  .hub-card-icon {
    width: 40px;
    height: 40px;
  }

  .hub-card-icon svg {
    width: 32px;
    height: 32px;
  }

  .hub-card-arrow {
    opacity: 1;
    transform: translateX(0);
  }
}