/* =========================
   活動報告アーカイブ
========================= */

#activity-archive {
  padding-top: 80px;
}

.activity-archive-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 5vw;
}

/* ヒーロー */

.activity-archive-hero {
  text-align: center;
  padding: 60px 0 40px;
  background: #f7f7f7;
}

.activity-archive-title {
  font-size: 36px;
  font-weight: 700;
  color: #3b7960;
  margin: 0 0 12px;
}

.activity-archive-desc {
  font-size: 16px;
  color: #666;
  margin: 0;
}

/* コンテンツ */

.activity-archive-content {
  padding: 50px 0 80px;
}

/* フィルター */

.activity-filter {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 40px;
  padding: 24px;
  background: #f9f9f9;
  border-radius: 10px;
}

.filter-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.filter-label {
  font-size: 15px;
  font-weight: 600;
  color: #333;
  min-width: 54px;
}

.filter-btn {
  display: inline-block;
  padding: 8px 20px;
  font-size: 15px;
  line-height: 1.5;
  border: 1px solid #c0c0c0;
  border-radius: 20px;
  text-decoration: none;
  color: #444;
  background: #fff;
  transition: 0.2s;
  letter-spacing: 0.02em;
}

.filter-btn:hover {
  border-color: #3b7960;
  color: #3b7960;
}

.filter-btn.is-active {
  background: #3b7960;
  color: #fff;
  border-color: #3b7960;
  font-weight: 600;
}

/* カードグリッド（front-page.cssのblog-cardスタイルを再利用） */

.activity-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.activity-cards .blog-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border-radius: 10px;
  overflow: hidden;
  text-decoration: none;
  color: #333;
  box-shadow: 0 4px 16px rgba(0,0,0,0.08);
  transition: 0.25s;
}

.activity-cards .blog-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 24px rgba(0,0,0,0.14);
}

.activity-cards .blog-card-thumb {
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.activity-cards .blog-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.activity-cards .blog-card:hover .blog-card-thumb img {
  transform: scale(1.05);
}

.activity-cards .blog-card-nothumb {
  width: 100%;
  height: 100%;
  background: #e0e0e0;
}

.activity-cards .blog-card-body {
  padding: 18px 20px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.activity-cards .blog-card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.activity-cards .blog-card-date {
  font-size: 13px;
  color: #888;
}

.activity-cards .blog-card-tag {
  display: inline-block;
  font-size: 11px;
  padding: 2px 10px;
  border-radius: 3px;
  font-weight: 600;
  line-height: 1.6;
}

.activity-cards .blog-card-tag--biz {
  background: #3b7960;
  color: #fff;
}

.activity-cards .blog-card-tag--loc {
  background: #f0f0f0;
  color: #555;
}

.activity-cards .blog-card-title {
  font-size: 17px;
  font-weight: 600;
  margin: 0 0 8px;
  line-height: 1.5;
}

.activity-cards .blog-card-excerpt {
  font-size: 13px;
  color: #666;
  line-height: 1.7;
  margin: 0;
}

.no-posts {
  text-align: center;
  color: #888;
  padding: 60px 0;
  grid-column: 1 / -1;
}

/* ページネーション */

.activity-pagination {
  text-align: center;
  margin-top: 50px;
}

.activity-pagination .page-numbers {
  display: inline-block;
  padding: 8px 14px;
  margin: 0 3px;
  border: 1px solid #ddd;
  border-radius: 6px;
  text-decoration: none;
  color: #555;
  font-size: 14px;
  transition: 0.2s;
}

.activity-pagination .page-numbers.current {
  background: #3b7960;
  color: #fff;
  border-color: #3b7960;
}

.activity-pagination .page-numbers:hover:not(.current) {
  border-color: #3b7960;
  color: #3b7960;
}

/* スマホ対応 */

@media (max-width: 768px) {

  .activity-archive-title {
    font-size: 26px;
  }

  .activity-cards {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .filter-group {
    gap: 8px;
  }

  .filter-btn {
    font-size: 13px;
    padding: 6px 14px;
  }

}