/* blog.css */

/* ── 一覧グリッド（3カラム） ─────────────────────── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

/* ── カード ──────────────────────────────────────── */
.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  height: 100%;
  color: var(--color-text);
  transition: transform var(--transition), box-shadow var(--transition);
}
.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.10);
  opacity: 1;
}

/* ── サムネイル ──────────────────────────────────── */
.blog-card__thumb {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-accent);
}
.blog-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.blog-card:hover .blog-card__thumb img {
  transform: scale(1.04);
}
.blog-card__placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #e8e8e8, #d0d0d0);
}

/* ── 本文エリア ──────────────────────────────────── */
.blog-card__body {
  padding: 14px 16px 8px;
  flex: 1;
}
.blog-card__date {
  display: block;
  font-size: 11px;
  color: var(--color-primary);
  font-family: var(--font-en);
  letter-spacing: 0.03em;
  margin-bottom: 6px;
}
.blog-card__title {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--color-text);
  margin-bottom: 8px;
}
.blog-card__excerpt {
  font-size: 12px;
  color: #888;
  line-height: 1.7;
}
.blog-card__more {
  display: block;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary);
  padding: 8px 16px 14px;
  text-align: right;
}

/* ── 詳細ページ ──────────────────────────────────── */
.blog-detail {
  max-width: 720px;
  margin-inline: auto;
}
.blog-detail__head {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--color-primary);
}
.blog-detail__date {
  display: block;
  font-size: 12px;
  color: var(--color-primary);
  font-family: var(--font-en);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}
.blog-detail__cats {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.blog-detail__cat {
  display: inline-block;
  background: var(--color-accent);
  color: var(--color-text);
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 2px;
}
.blog-detail__title {
  font-size: clamp(18px, 3vw, 26px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-text);
}
.blog-detail__thumb {
  margin-bottom: 32px;
  border-radius: 4px;
  overflow: hidden;
}
.blog-detail__thumb img {
  width: 100%;
  height: auto;
  object-fit: cover;
}
.blog-detail__body {
  font-size: 15px;
  line-height: 2;
  color: var(--color-text);
  margin-bottom: 48px;
}
.blog-detail__body p {
  margin-bottom: 1.5em;
}

/* ── 前後ナビ ────────────────────────────────────── */
.blog-detail__nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding-block: 24px;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 24px;
}
.blog-detail__nav-prev a,
.blog-detail__nav-next a {
  font-size: 13px;
  color: var(--color-link);
  line-height: 1.6;
  display: block;
}
.blog-detail__nav-next {
  text-align: right;
}

/* ── レスポンシブ ────────────────────────────────── */
@media (max-width: 740px) {
  .blog-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .blog-detail__nav {
    grid-template-columns: 1fr;
  }
  .blog-detail__nav-next {
    text-align: left;
  }
}