/* =========================================
   Single Post Page CSS
   ========================================= */

/* --- Breadcrumb: single-line with ellipsis --- */
.single .breadcrumb__list {
  flex-wrap: nowrap;
}
.single .breadcrumb__item {
  flex-shrink: 0;
  white-space: nowrap;
}
.single .breadcrumb__item--current {
  display: block;
  flex-shrink: 1;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  min-width: 0;
}

/* --- Two-column layout --- */
.single-page__body {
  display: grid;
  grid-template-columns: 1fr 349px;
  gap: 40px;
  margin-bottom: 40px;
}

/* --- Main content area --- */
.single-page__main {
  min-width: 0;
}

/* --- Featured image --- */
.single-page__thumbnail {
  width: 100%;
  margin-bottom: 24px;
}
.single-page__thumbnail img {
  width: 100%;
  height: auto;
  display: block;
}

/* --- Category + Date meta row --- */
.single-page__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 8px;
}

/* --- Category tags --- */
.single-page__categories {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.single-page__category {
  display: inline-block;
  background: var(--color-faq-bg);
  border-radius: 5px;
  padding: 4px 12px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
}

/* --- Date --- */
.single-page__date {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
}

/* --- Article title --- */
.single-page__title {
  font-size: 25px;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  margin: 0 0 24px;
}

/* --- TOC (auto-inserted by functions.php) --- */
.toc {
  background: var(--color-faq-bg);
  margin-bottom: 32px;
  padding: 30px 50px;
}
.toc__header {
  padding-bottom: 20px;
}
.toc__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
}
.toc__list {
  list-style: none;
  margin: 0;
  padding-left: 0 !important;
  padding-top: 20px;
  border-top: 1px solid #DBDBDB;
}
.toc__item--h2 > a {
  font-size: 18px;
  font-weight: 500;
  color: var(--color-text);
}
.toc__item--h3 > a {
  font-size: 16px;
  font-weight: 400;
  color: var(--color-text);
}
.toc__sublist {
  list-style: none;
  padding-left: 10px !important;
  margin: 8px 0 0;
}
.single-page__content .toc a {
  color: var(--color-text);
  text-decoration: none;
}
.single-page__content .toc a:hover {
  text-decoration: none;
  opacity: 0.7;
  transition: opacity 0.3s ease;
}
.toc__item {
  margin-bottom: 6px;
}
.toc__item:last-child {
  margin-bottom: 0;
}

/* --- Article body content --- */
.single-page__content h2 {
  background: var(--color-faq-bg);
  border-left: 5px solid var(--color-section-accent);
  padding: 16px 20px;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin: 40px 0 24px;
}
.single-page__content h3 {
  border-top: 2px solid var(--color-section-accent);
  padding-top: 17.5px;
  border-bottom: 2px solid var(--color-section-accent);
  padding-bottom: 17.5px;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin: 32px 0 16px;
}
.single-page__content p {
  font-size: 16px;
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.8;
  margin: 0 0 16px;
}
.single-page__content img {
  max-width: 100%;
  height: auto;
}
.single-page__content ul,
.single-page__content ol {
  color: var(--color-text);
  line-height: 1.8;
  margin: 0 0 16px;
  padding-left: 1.5em;
}
.single-page__content a {
  color: var(--color-blue);
  text-decoration: underline;
}
.single-page__content a:hover {
  text-decoration: none;
}

/* --- Sidebar --- */
.single-page__sidebar {
  min-width: 0;
}
.single-page__sidebar .section-label {
  margin: 0 0 4px;
  text-align: left;
}
.single-page__sidebar .section-heading {
  margin: 0 0 20px;
  text-align: left;
}

/* --- Related articles list --- */
.related-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.related-item {
  margin-bottom: 16px;
}
.related-item:last-child {
  margin-bottom: 0;
}
.related-item__link {
  display: flex;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}
.related-item__link:hover {
  opacity: 0.8;
}
.related-item__thumb {
  flex-shrink: 0;
  width: 119px;
  height: 64px;
  border-radius: 5px 5px 0 0;
  overflow: hidden;
  background: var(--color-placeholder-bg);
}
.related-item__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.related-item__no-img {
  width: 100%;
  height: 100%;
  background: var(--color-placeholder-bg);
}
.related-item__body {
  min-width: 0;
  display: flex;
  flex-direction: column;
}
.related-item__date {
  font-size: 12px;
  font-weight: 400;
  color: var(--color-text);
  margin-bottom: 4px;
  line-height: 1.2;
}
.related-item__title {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.4;
}

/* --- SP Responsive --- */
@media (max-width: 768px) {
  .single-page__body {
    grid-template-columns: 1fr;
    gap: 100px;
  }

  .single-page__sidebar {
    width: 100%;

    .section-label,
    .section-heading {
      text-align: center;
    }
  }

  .single-page__sidebar::before {
    content: '';
    display: block;
    width: calc(100% + 32px);
    height: 1px;
    background: var(--color-border-muted);
    margin-bottom: 30px;
    margin-left: -16px;
    margin-right: -16px;
  }

  .single-page__title {
    font-size: 22px;
  }

  .single-page__content h3 {
    padding-top: 10px;
    padding-bottom: 10px;
  }

  .toc {
    padding: 17px 20px;
  }

  .toc__header {
    padding-bottom: 15px;
  }

  .toc__list {
    padding-top: 15px;
  }

  /* 本文 */
  .single-page__content p {
    font-size: 14px;
  }

  /* 見出し */
  .single-page__content h2 {
    font-size: 16px;
  }
  .single-page__content h3 {
    font-size: 14px;
  }

  /* 目次 */
  .toc__title {
    font-size: 14px;
  }
  .toc__item--h2 > a {
    font-size: 16px;
  }
  .toc__item--h3 > a {
    font-size: 14px;
  }
}