/* =========================================================
   news.css
   - お知らせ一覧ページ専用スタイル
========================================================= */

/* --- Utilities --- */
.bg-gray {
  background-color: var(--color-gray-light);
  padding: 6rem 0;
}
.mt-4 {
  margin-top: 2rem;
}
.hidden {
  display: none;
}

/* ---------------------------------------------------------
   Filter Buttons (カテゴリ切り替え)
--------------------------------------------------------- */
.news-filter {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 15px;
  margin-bottom: 50px;
}

.filter-btn {
  background: #fff;
  border: 1px solid var(--color-gray-border);
  border-radius: 50px;
  padding: 10px 25px;
  font-size: 0.95rem;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: var(--ff-sans);
  font-weight: 500;
}

.filter-btn:hover {
  background: #f0f0f0;
  border-color: #ddd;
}

.filter-btn.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  box-shadow: 0 4px 10px rgba(0, 161, 233, 0.3);
}

/* ---------------------------------------------------------
   News List (記事リスト)
--------------------------------------------------------- */
.news-list-wrapper {
  min-height: 300px;
}

/* 記事アイテム (JSで生成) */
.news-item {
  display: block;
  background: #fff;
  border-radius: 8px;
  padding: 25px 30px;
  margin-bottom: 20px;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.02);
  border: 1px solid transparent;
}

.news-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
  border-color: var(--color-primary-light, #e0f2ff);
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 15px;
  margin-bottom: 10px;
  font-size: 0.85rem;
}

.news-date {
  color: #888;
  font-family: 'Helvetica Neue', sans-serif;
  letter-spacing: 0.05em;
}

/* カテゴリラベルのベース */
.news-category {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  background-color: #eee;
  color: #666;
}

/* ★カテゴリ別色設定 */
/* お知らせ: 信頼感のある青 */
.cat-notice {
  background-color: #e3f2fd;
  color: #1976d2;
}
/* 活動報告: 実績・成長を表すティール/緑 */
.cat-report {
  background-color: #e0f2f1;
  color: #00695c;
}
/* 採用・教育: 情熱や活気を表すピンク/赤 */
.cat-recruit {
  background-color: #fce4ec;
  color: #c2185b;
}

.news-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.6;
  margin: 0;
  transition: color 0.2s;
}

.news-item:hover .news-title {
  color: var(--color-primary);
}

/* ---------------------------------------------------------
   Loading Spinner
--------------------------------------------------------- */
.loading-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 50px 0;
  color: #999;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid #f3f3f3;
  border-top: 4px solid var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 15px;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* ---------------------------------------------------------
   Responsive
--------------------------------------------------------- */
@media (max-width: 768px) {
  .news-filter {
    gap: 10px;
    margin-bottom: 30px;
  }
  .filter-btn {
    padding: 8px 16px;
    font-size: 0.85rem;
  }

  .news-item {
    padding: 20px;
  }
  .news-meta {
    flex-wrap: wrap;
    gap: 10px;
  }
  .news-title {
    font-size: 1rem;
  }
}