/* NOTE:
 * - production では learning-column.min.css が優先されるため、
 *   学習コラムのスタイルは learning-column.css と同内容を維持します。
 * - このファイルは「min」という名前ですが、差分事故防止のためソースと同一内容にしています。
 */

/* 学習コラム：ページ固有スタイル（他ページの未使用CSS削減） */

/* page-header余白調整（一覧） */
.learning-column-page .page-header {
  margin-bottom: 0 !important;
}
.learning-column-page.page-content {
  margin-top: 0 !important;
  margin-bottom: 0 !important;
}
.learning-column-page .page-body {
  margin-top: 0;
  padding-top: 0;
}
.learning-column-page .page-body > .post-card:first-child {
  padding-top: 0;
}
.learning-column-page .post-card {
  padding-top: 0;
  padding-bottom: 0;
}

/* 抜粋は短く */
.learning-column-page .post-excerpt {
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
  margin-bottom: 8px;
  line-height: 1.85;
}
.learning-column-page .post-readmore {
  margin: 0 0 12px;
}

/* 一覧カード内の情報を、タイトルカードに揃える */
.learning-column-page .post-meta,
.learning-column-page .post-excerpt,
.learning-column-page .post-readmore {
  padding-left: 18px;
  padding-right: 14px;
}

.learning-column-page .post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  margin: 0 0 8px;
}

/* カテゴリリンクをバッジ化（視認性UP） */
.learning-column-page .post-meta .post-cat a {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid rgba(15, 98, 254, 0.18);
  background: rgba(15, 98, 254, 0.06);
  color: rgba(15, 23, 42, 0.82);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.82rem;
}
.learning-column-page .post-meta .post-cat a:hover {
  background: rgba(15, 98, 254, 0.1);
  border-color: rgba(15, 98, 254, 0.35);
  color: var(--primary-blue);
}

/* 投稿同士の区切りを少し明確に */
.learning-column-page .post-card {
  margin: 0 0 18px;
}
.learning-column-page .post-card:last-child {
  margin-bottom: 0;
}

/* 記事を「1つの塊（カード）」として見せる */
.learning-column-page .lc-card {
  position: relative;
  border: 1px solid rgba(15, 98, 254, 0.14);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 1px 0 rgba(15, 98, 254, 0.06);
  overflow: hidden;
  padding: 14px 16px 16px;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background-color 180ms ease;
}
.learning-column-page .lc-card:hover {
  transform: translateY(-2px);
  border-color: rgba(15, 98, 254, 0.28);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 16px 40px rgba(15, 98, 254, 0.14);
}
.learning-column-page .lc-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 6px;
  background: rgba(15, 98, 254, 0.55);
}
.learning-column-page .lc-card.is-programming::before {
  background: rgba(0, 212, 255, 0.65);
}
.learning-column-page .lc-card.is-self-development::before {
  background: rgba(36, 161, 72, 0.55);
}

/* 以前の「内側に余白を足す」指定をカード内では無効化 */
.learning-column-page .lc-card .post-excerpt,
.learning-column-page .lc-card .post-readmore,
.learning-column-page .lc-card .lc-card-head {
  padding-left: 0;
  padding-right: 0;
}

/* カテゴリ絞り込み（タブ） */
.learning-column-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0 18px;
  padding: 0;
}
.learning-column-filters__item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid rgba(2, 6, 23, 0.10);
  background: rgba(2, 6, 23, 0.03);
  color: rgba(15, 23, 42, 0.78);
  text-decoration: none;
  line-height: 1;
  font-weight: 700;
  letter-spacing: 0.01em;
  position: relative;
  box-shadow: none;
  transition: background-color 150ms ease, color 150ms ease, border-color 150ms ease, box-shadow 150ms ease;
}
.learning-column-filters__item .lc-filter-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-right: 8px;
  color: rgba(15, 98, 254, 0.78);
  opacity: 0.78;
}
.learning-column-filters__item .lc-filter-icon svg {
  width: 16px;
  height: 16px;
}
.page-content:not(.legal-page) .page-body .learning-column-filters__item {
  text-decoration: none;
}
.learning-column-filters__item:hover {
  background: rgba(255, 255, 255, 0.98);
  border-color: rgba(2, 6, 23, 0.16);
  box-shadow: 0 10px 26px rgba(15, 98, 254, 0.08);
}
.learning-column-filters__item.is-active {
  background: rgba(15, 98, 254, 0.10);
  border-color: rgba(15, 98, 254, 0.45);
  color: rgba(0, 45, 156, 0.95);
  font-weight: 900;
  box-shadow: 0 16px 36px rgba(15, 98, 254, 0.12), 0 0 0 2px rgba(15, 98, 254, 0.14);
}
.learning-column-filters__item.is-active .lc-filter-icon {
  color: currentColor;
  opacity: 1;
}
.learning-column-filters__item.is-programming .lc-filter-icon {
  color: rgba(0, 45, 156, 0.95);
}
.learning-column-filters__item.is-self-development .lc-filter-icon {
  color: rgba(18, 83, 40, 0.95);
}
.learning-column-filters__item.is-programming.is-active {
  background: rgba(0, 212, 255, 0.10);
  border-color: rgba(0, 212, 255, 0.40);
  color: rgba(0, 45, 156, 0.95);
}
.learning-column-filters__item.is-self-development.is-active {
  background: rgba(36, 161, 72, 0.10);
  border-color: rgba(36, 161, 72, 0.40);
  color: rgba(18, 83, 40, 0.95);
}

/* カード上部：カテゴリバッジ＋日付（トップと同系統） */
.lc-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: 0 0 10px;
}
.lc-date {
  color: var(--text-secondary);
  font-size: 0.86rem;
  white-space: nowrap;
}
.lc-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.82rem;
  letter-spacing: 0.01em;
  border: 1px solid rgba(15, 98, 254, 0.18);
  background: rgba(15, 98, 254, 0.06);
  color: rgba(15, 23, 42, 0.88);
  white-space: nowrap;
}
.lc-badge__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.lc-badge__icon svg {
  width: 16px;
  height: 16px;
}
.lc-badge.is-education {
  background: rgba(15, 98, 254, 0.07);
  border-color: rgba(15, 98, 254, 0.20);
  color: rgba(0, 45, 156, 0.95);
}
.lc-badge.is-programming {
  background: rgba(0, 212, 255, 0.10);
  border-color: rgba(0, 212, 255, 0.24);
  color: rgba(0, 45, 156, 0.95);
}
.lc-badge.is-self-development {
  background: rgba(36, 161, 72, 0.10);
  border-color: rgba(36, 161, 72, 0.22);
  color: rgba(18, 83, 40, 0.95);
}
.learning-column-filters__item:focus-visible {
  outline: 2px solid rgba(15, 98, 254, 0.55);
  outline-offset: 2px;
}

/* AJAX切替中 */
.learning-column-page.is-loading .learning-column-results {
  opacity: 0.55;
  pointer-events: none;
  transition: opacity 150ms ease;
}
.learning-column-results {
  transition: opacity 150ms ease;
}

/* 学習コラム（一覧）：タイトルをカード見出しに */
.learning-column-page .post-title {
  margin: 0 0 10px;
  line-height: 1.25;
}
.learning-column-page .lc-card__link {
  display: block;
  color: inherit;
  text-decoration: none;
}
.learning-column-page .lc-card__link:focus-visible {
  outline: 2px solid rgba(15, 98, 254, 0.55);
  outline-offset: 3px;
  border-radius: 12px;
}
.learning-column-page .lc-card .post-title {
  color: rgba(15, 23, 42, 0.92);
  font-weight: 900;
  font-size: 1.22rem;
  letter-spacing: -0.01em;
  line-height: 1.32;
  overflow-wrap: anywhere;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}

/* グローバルの本文用 h2 スタイル（大きい余白/左ボーダー）を一覧タイトルでは無効化 */
.learning-column-page .lc-card h2.post-title {
  margin: 0 0 10px;
  border-left: 0;
  padding-left: 0;
  font-size: 1.22rem;
  line-height: 1.32;
  letter-spacing: -0.01em;
}

.learning-column-page .lc-card .lc-card-head {
  margin-bottom: 12px;
}

/* 「続きを読む」は右端に寄せて視線誘導 */
.learning-column-page .lc-card .post-readmore {
  margin: 0;
  text-align: right;
}
.learning-column-page .lc-card .read-more {
  display: inline-flex;
  align-items: center;
  font-weight: 800;
  text-decoration: none;
}
.learning-column-page .lc-card__link:hover .post-title {
  color: var(--primary-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}
@media (max-width: 768px) {
  .learning-column-page .lc-card .post-title {
    font-size: 1.05rem;
    -webkit-line-clamp: 2;
  }
}
@media (min-width: 1024px) {
  .learning-column-page .post-title {
    font-size: 1.28rem;
  }
}