/* ============================================================
   ECCジュニア・ECCシニア ページ共通 – page-related.css
   ============================================================ */

/* ---- Related Site Hero ---- */
.related-hero {
  padding-block: var(--space-16) var(--space-20);
  text-align: center;
  position: relative;
  overflow: hidden;
  color: var(--color-white);
}

.related-hero--junior {
  background: linear-gradient(135deg, #006633 0%, #009944 60%, #00CC55 100%);
}

.related-hero--senior {
  background: linear-gradient(135deg, #2C3E7A 0%, #3D5A9A 60%, #8B4FC8 100%);
}

.related-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='white' fill-opacity='0.04'%3E%3Ccircle cx='30' cy='30' r='4'/%3E%3C/g%3E%3C/svg%3E");
}

.related-hero__inner {
  position: relative;
  z-index: 1;
}

.related-hero__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.3);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-5);
  font-size: var(--text-sm);
  font-weight: var(--weight-bold);
}

.related-hero__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: var(--weight-black);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
}

.related-hero__sub {
  font-size: var(--text-md);
  color: rgba(255,255,255,.85);
  max-width: 580px;
  margin-inline: auto;
  line-height: var(--leading-loose);
}

/* ---- Feature Points ---- */
.related-features {
  background: var(--color-white);
}

.related-features__grid {
  display: grid;
  gap: var(--space-5);
  max-width: 960px;
  margin-inline: auto;
}

@media (min-width: 640px) {
  .related-features__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .related-features__grid { grid-template-columns: repeat(3, 1fr); }
}

.related-feature-card {
  background: var(--color-bg-gray);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: transform var(--transition-base);
}

.related-feature-card:hover { transform: translateY(-3px); }

.related-feature-card__icon {
  font-size: 2.5rem;
  display: block;
  margin-bottom: var(--space-3);
}

.related-feature-card__title {
  font-size: var(--text-md);
  font-weight: var(--weight-bold);
  color: var(--color-navy);
  margin-bottom: var(--space-3);
}

.related-feature-card--junior .related-feature-card__title { color: #006633; }
.related-feature-card--senior .related-feature-card__title { color: #2C3E7A; }

.related-feature-card__text {
  font-size: var(--text-sm);
  color: var(--color-text-sub);
  line-height: var(--leading-normal);
}

/* ---- Course List ---- */
.related-courses {
  background: var(--color-bg-gray);
}

.related-course-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  max-width: 800px;
  margin-inline: auto;
}

.related-course-item {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  display: flex;
  align-items: flex-start;
  gap: var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base);
}

.related-course-item:hover { box-shadow: var(--shadow-md); }

.related-course-item__icon {
  font-size: 2rem;
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.related-course-item--junior .related-course-item__icon { background: #E8F5EF; }
.related-course-item--senior .related-course-item__icon { background: #EEEAF8; }

.related-course-item__title {
  font-size: var(--text-md);
  font-weight: var(--weight-bold);
  color: var(--color-navy);
  margin-bottom: var(--space-2);
}

.related-course-item__text {
  font-size: var(--text-sm);
  color: var(--color-text-sub);
  line-height: var(--leading-normal);
}

/* ---- External Link Box ---- */
.related-link-box {
  background: var(--color-white);
}

.related-link-box__inner {
  max-width: 640px;
  margin-inline: auto;
  text-align: center;
  padding: var(--space-8);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}

.related-link-box__title {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  color: var(--color-navy);
  margin-bottom: var(--space-3);
}

.related-link-box__text {
  font-size: var(--text-sm);
  color: var(--color-text-sub);
  line-height: var(--leading-loose);
  margin-bottom: var(--space-6);
}

.btn--junior {
  background-color: #009944;
  color: var(--color-white);
  box-shadow: 0 4px 16px rgba(0,153,68,.3);
}

.btn--junior:hover {
  background-color: #007733;
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn--senior {
  background-color: #3D5A9A;
  color: var(--color-white);
  box-shadow: 0 4px 16px rgba(61,90,154,.3);
}

.btn--senior:hover {
  background-color: #2C3E7A;
  color: var(--color-white);
  transform: translateY(-2px);
}

/* ---- Blog Page ---- */
.blog-page__header {
  margin-bottom: var(--space-10);
}

.blog-page__cats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-5);
}

.blog-page__cat-btn {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  padding: 0.35em 1em;
  border-radius: var(--radius-full);
  border: 2px solid var(--color-border);
  color: var(--color-text-sub);
  text-decoration: none;
  transition: all var(--transition-base);
}

.blog-page__cat-btn:hover,
.blog-page__cat-btn.is-active {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: var(--color-white);
}

.blog-page__cat-btn--all.is-active {
  background: var(--color-navy);
  border-color: var(--color-navy);
}