/* ============================================================
   Corpus2Skill Navigator - Blog Styles
   親サイト styles.css に追加で読み込む（ヘッダー/フッターは親CSSに依存）
   ============================================================ */

/* 記事ヘッダー */
.article-header {
  margin-bottom: 2rem;
}

.article-header h1 {
  font-family: var(--serif);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--indigo-900);
  line-height: 1.55;
  margin-bottom: 1rem;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-bottom: 1.4rem;
}

.article-date {
  font-family: var(--serif);
  color: var(--emerald-700);
  font-weight: 700;
  font-size: 0.92rem;
}

.article-category {
  font-size: 0.75rem;
  font-weight: 700;
  color: #fff;
  background: var(--indigo-700);
  border-radius: 4px;
  padding: 0.15rem 0.7rem;
}

.article-eyecatch {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-bottom: 2rem;
}

.article-eyecatch img {
  display: block;
  width: 100%;
  height: auto;
}

/* シェアボタン */
.share-box {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin: 2.6rem 0 1rem;
  padding: 1.1rem 1.3rem;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.share-label {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--indigo-900);
}

.share-btn {
  display: inline-block;
  padding: 0.45rem 1.3rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
}

.share-btn.share-x {
  background: #0f1419;
}

.share-btn.share-x:hover {
  background: #333;
  color: #fff;
}

.share-btn.share-facebook {
  background: #1877f2;
}

.share-btn.share-facebook:hover {
  background: #0f5ec7;
  color: #fff;
}

/* 記事下ナビ */
.back-to-list {
  display: inline-block;
  margin-top: 1.4rem;
  font-weight: 700;
  color: var(--indigo-700);
}

.back-to-list::before {
  content: "← ";
}

/* ---------------- ブログ一覧 ---------------- */

.blog-list-header {
  text-align: center;
  padding: 2.8rem 1.2rem 0.6rem;
}

.blog-list-header h1 {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--indigo-900);
  margin-bottom: 0.6rem;
}

.blog-list-header p {
  color: var(--muted);
  font-size: 0.95rem;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.8rem;
  padding: 2rem 0 4rem;
}

.blog-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.blog-card-thumb {
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.blog-card-thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.blog-card-body {
  padding: 1.3rem 1.3rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  margin-bottom: 0.7rem;
}

.blog-card h2 {
  font-family: var(--serif);
  font-size: 1.12rem;
  line-height: 1.55;
  margin-bottom: 0.7rem;
}

.blog-card h2 a {
  color: var(--indigo-900);
}

.blog-card h2 a:hover {
  color: var(--emerald-700);
}

.blog-card p {
  font-size: 0.88rem;
  color: var(--muted);
  flex: 1;
  margin-bottom: 1rem;
}

.blog-card .card-link {
  align-self: flex-start;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--emerald-700);
}

@media (max-width: 700px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .article-header h1 {
    font-size: 1.4rem;
  }
}