/* ============================================
   TED要約ラボ — カスタムCSS v2
   ============================================ */

/* ---- 0. 全体背景・ベース ---- */
body {
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN",
    "Hiragino Sans", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.8;
  letter-spacing: 0.03em;
  background: #f5f7fa;
}

h1, h2, h3, h4, h5, h6 {
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;
  font-weight: 700;
  line-height: 1.4;
}

/* Mainroadデフォルトの外枠シャドウを消す */
.container--outer {
  box-shadow: none;
  margin: 0 auto;
  max-width: 1200px;
}

/* ---- 1. ヘッダー ---- */
.header--custom {
  background: #fff;
  border-bottom: 1px solid #e8ecf1;
  padding: 0;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}

.header__logo-link {
  text-decoration: none;
  color: #1d3557;
}

.header__logo-title {
  font-family: "Noto Sans JP", sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  display: block;
}

.header__logo-tagline {
  font-size: 0.8rem;
  color: #6b7b8d;
  display: block;
  margin-top: 2px;
}

/* ナビゲーション */
.header__nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 4px;
  background: transparent;
}

.header__nav-item {
  background: transparent;
}

.header__nav-link {
  display: block;
  padding: 8px 16px;
  color: #4a5568;
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 6px;
  transition: background 0.2s, color 0.2s;
}

.header__nav-link:hover {
  background: #f0f4f8;
  color: #1d3557;
}

.header__nav-item--active .header__nav-link {
  background: #1d3557;
  color: #fff;
}

/* モバイルナビ */
.header__nav-toggle {
  display: none;
}

@media (max-width: 767px) {
  .header__inner {
    flex-wrap: wrap;
    padding: 12px 0;
  }
  .header__nav {
    width: 100%;
  }
  .header__nav-toggle {
    display: block;
    width: 100%;
    background: #1d3557;
    color: #fff;
    border: none;
    padding: 10px;
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    cursor: pointer;
    margin-top: 8px;
  }
  .header__nav-list {
    flex-direction: column;
    display: none;
    background: #1d3557;
  }
  .header__nav-list .header__nav-link {
    color: #fff;
    border-radius: 0;
    padding: 12px 16px;
  }
  .header__nav-list .header__nav-link:hover {
    background: rgba(255,255,255,0.1);
  }
}

/* Mainroadデフォルトのmenu下線を消す */
.menu {
  border-bottom: none;
}

/* ---- 2. カードグリッド（トップページ） ---- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

@media (max-width: 767px) {
  .card-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

/* ---- 3. カードデザイン ---- */
.card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1), 0 4px 10px rgba(0, 0, 0, 0.06);
}

.card__thumbnail {
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.card:hover .card__image {
  transform: scale(1.03);
}

.card__body {
  padding: 20px;
}

.card__category {
  font-size: 0.75rem;
  font-weight: 700;
  color: #e62b1e;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.card__title {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.5;
  margin: 0 0 8px;
}

.card__title a {
  color: #1a202c;
  text-decoration: none;
  transition: color 0.2s;
}

.card__title a:hover {
  color: #1d3557;
}

.card__date {
  font-size: 0.8rem;
  color: #a0aec0;
  display: block;
  margin-bottom: 10px;
}

.card__description {
  font-size: 0.875rem;
  color: #64748b;
  line-height: 1.7;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---- 4. 記事本文（single page） ---- */
.post__content {
  font-size: 1.05rem;
  line-height: 1.85;
}

.post__content p {
  margin-bottom: 1.4em;
}

/* 見出しアクセントライン */
.post__content h2 {
  border-left: 5px solid #1d3557;
  padding-left: 15px;
  margin-top: 2em;
  margin-bottom: 0.8em;
  font-size: 1.35rem;
}

.post__content h3 {
  margin-top: 1.6em;
  margin-bottom: 0.6em;
  font-size: 1.15rem;
}

/* ---- 5. TED動画リンクボタン ---- */
.ted-video-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.7em 1.5em;
  background: #e62b1e;
  color: #fff !important;
  border-radius: 6px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  transition: background 0.2s;
  margin: 1.5em 0;
}

.ted-video-link:hover {
  background: #c4241a;
  color: #fff !important;
}

/* ---- 6. 引用ブロック ---- */
.post__content blockquote {
  border-left: 4px solid #1d3557;
  padding: 0.8em 1.2em;
  margin: 1.5em 0;
  background: #f8f9fa;
  border-radius: 0 4px 4px 0;
}

/* ---- 7. リスト ---- */
.post__content ul,
.post__content ol {
  margin-bottom: 1.2em;
  padding-left: 1.5em;
}

.post__content li {
  margin-bottom: 0.4em;
  line-height: 1.7;
}

/* ---- 8. 画像 ---- */
.post__content img {
  border-radius: 8px;
  margin: 1em 0;
}

/* ---- 9. サイドバー微調整 ---- */
.widget {
  font-size: 0.9rem;
}

.widget__title {
  font-size: 1rem;
}

/* ---- 10. フッター ---- */
.footer--custom {
  background: #1d3557;
  color: #fff;
  padding: 24px 0;
  text-align: center;
}

.footer--custom .footer__copyright {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.8);
}

/* ---- 11. ページネーション ---- */
.pagination {
  margin-top: 32px;
  text-align: center;
}

.pagination__item {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 6px;
}

/* ---- 12. wrapper背景 ---- */
.wrapper {
  background: transparent;
  padding: 32px 24px;
}

/* ---- 13. モバイル ---- */
@media (max-width: 768px) {
  .post__content {
    font-size: 1rem;
  }
  .post__content h2 {
    font-size: 1.2rem;
  }
  .wrapper {
    padding: 16px 12px;
  }
  .card__body {
    padding: 16px;
  }
  .card__title {
    font-size: 1rem;
  }
}