/* =========================================
 *  記事関連スタイル
 * ========================================= */

/* =========================================
 *  フロントページ記事関連
 * ========================================= */

/* メインエリア */
main.front-main {
  padding: 2rem 3vw 3rem !important;
  background: var(--color-bg-main);
  min-height: 100vh;
  container-type: inline-size;
  container-name: front-main;
}

/* HERO セクション */
.hero-section {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 2.5rem;
  margin-bottom: 2.5rem;
}

.hero-thumb-wrap {
  width: 100%;
  overflow: hidden;
  border-radius: .45rem;
  margin-bottom: 1.5rem;
}

.hero-thumb-img {
  width: 100% !important;
  height: 40vh !important;
  object-fit: cover;
  display: block;
}

.hero-title {
  font-family: var(--font-hero-en);
  font-size: clamp(2.1rem, 3.1vw, 3.1rem);
  font-weight: 400;
}

.hero-title-ja {
  font-family: var(--font-ja);
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  font-weight: 400;
}

/* メタ情報 */
.post-meta {
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  opacity: .8;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.25rem;
}

.post-date {
  display: inline-block;
}

/* カテゴリボタン */
.post-category {
  display: inline-block;
  padding: 0.15rem 0.85rem;
  border-radius: 1rem;
  font-size: 0.9rem;
  font-weight: 400;
  text-decoration: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  color: var(--color-text-main);
  background-color: transparent;
  letter-spacing: 0;
  border: none;
}

.post-category:hover {
  opacity: 0.8;
  transform: translateY(-1px);
  text-decoration: none;
}

/* タグボタン */
.post-tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.5rem;
  margin-left: 0.25rem;
}

.post-tag {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 1rem;
  font-size: 0.72rem;
  font-weight: 400;
  text-decoration: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  color: var(--color-text-main);
  background-color: transparent;
  letter-spacing: 0;
  border: none;
}

.post-tag:hover {
  opacity: 0.8;
  transform: translateY(-1px);
  text-decoration: none;
}

.post-excerpt {
  margin-top: 1rem;
  font-size: 0.96rem;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.read-more-link {
  color: var(--color-text-main);
  text-decoration: none;
  font-weight: 400;
  opacity: 0.8;
}

.read-more-link:hover {
  opacity: 1;
  text-decoration: underline;
}

/* 最新記事グリッド */
.latest-grid {
  row-gap: 1.8rem;
}

.post-card {
  border: none;
  background: transparent;
}

.post-card-thumb-wrap {
  overflow: hidden;
  border-radius: .35rem;
  margin-bottom: .8rem;
}

.post-card-thumb {
  width: 100% !important;
  aspect-ratio: 1 / 1 !important;
  object-fit: cover;
  display: block;
}

.post-card-title {
  font-family: var(--font-hero-en);
  font-size: clamp(1.1rem, 1.4vw, 1.3rem);
  font-weight: 400;
}

.post-card-title-ja {
  font-family: var(--font-ja);
  font-size: clamp(0.9rem, 1.1vw, 1.05rem);
  font-weight: 400;
}

/* 全幅バナー */
.fullwidth-banner {
  margin: 3rem 0;
}

.fullwidth-banner-inner {
  width: 100%;
  max-height: 20rem;
  border-radius: .75rem;
  overflow: hidden;
  background: #e6ddd0;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 関連投稿 */
.related-section {
  margin-top: 3rem;
}

/* =========================================
 *  記事ページ（Single Post）
 * ========================================= */

.single-page-wrap {
  display: grid;
  grid-template-columns: minmax(16rem, 20rem) minmax(0, 1fr) minmax(16rem, 20rem);
  grid-template-rows: auto 1fr auto;
}

.single-page-wrap > .front-sidebar {
  grid-column: 1;
  grid-row: 1 / 3;
}

.single-page-wrap > main {
  grid-column: 2;
  grid-row: 1 / 3;
  min-width: 0;
  overflow-x: hidden;
}

.single-page-wrap > aside.single-sidebar {
  grid-column: 3;
  grid-row: 1 / 3;
}

.single-page-wrap > footer {
  grid-column: 1 / 4;
  grid-row: 3;
}

.single-main {
  padding: 2rem 3vw 3rem;
  background: var(--color-bg-main);
  min-height: 100vh;
  max-width: 100%;
  overflow-x: hidden;
}

/* サムネイルエリア */
.single-thumb-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 2 / 1;
  overflow: hidden;
  border-radius: .45rem;
  margin-bottom: 1.5rem;
}

.single-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.single-thumb-placeholder {
  background: #e6ddd0;
}

.single-thumb-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.5);
  z-index: 1;
}

.single-title-wrap {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  text-align: center;
  width: 90%;
}

.single-title {
  font-size: clamp(2rem, 3vw, 3rem);
  font-weight: 400;
  color: var(--color-text-main);
  margin: 0;
}

/* パンくずリスト */
.single-breadcrumb {
  margin-bottom: 2rem;
}

.breadcrumb-nav {
  font-size: 0.7rem;
  color: var(--color-text-main);
  opacity: 0.7;
  letter-spacing: 0;
}

.breadcrumb-nav a {
  color: var(--color-text-main);
  text-decoration: none;
}

.breadcrumb-nav a:hover {
  text-decoration: underline;
}

.breadcrumb-nav span {
  opacity: 0.5;
}

/* 目次エリア */
.single-toc-wrap {
  margin-bottom: 2.5rem;
  border: 1px solid var(--color-border);
  border-radius: .35rem;
  background: var(--color-bg-sidebar);
}

.single-toc-toggle {
  width: 100%;
  padding: 1rem 1.5rem;
  background: transparent;
  border: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-family: var(--font-hero-en);
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text-main);
}

.single-toc-toggle:hover {
  background: rgba(0, 0, 0, 0.02);
}

.single-toc-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-in-out;
}

.single-toc-content.is-open {
  max-height: 500px;
}

.single-toc-list {
  list-style: none;
  padding: 0 1.5rem 1.5rem;
  margin: 0;
}

.single-toc-list li {
  padding: 0.5rem 0;
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text-main);
  border-bottom: 1px solid var(--color-border);
}

.single-toc-list li:last-child {
  border-bottom: none;
}

.single-toc-list .toc-level-2 {
  padding-left: 0;
}

.single-toc-list .toc-level-3 {
  padding-left: 1.5rem;
}

.single-toc-list .toc-level-4 {
  padding-left: 3rem;
}

/* 記事本文エリア */
.single-content {
  margin-bottom: 3rem;
  line-height: 1.8;
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--color-text-main);
  letter-spacing: 0.02em;
  max-width: 100%;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.single-content h2,
.single-content h3,
.single-content h4 {
  font-family: var(--font-hero-en);
  font-weight: 400;
  margin-top: 2.5rem;
  margin-bottom: 1.5rem;
  line-height: 1.4;
  letter-spacing: 0.03em;
}

.single-content h2 {
  font-size: clamp(1.8rem, 2.2vw, 2.2rem);
  position: relative;
  padding: 1rem 1.5rem;
  padding-left: 1.5rem;
  background: linear-gradient(to right, rgba(228, 223, 215, 0.3) 0%, rgba(228, 223, 215, 0) 100%);
  border-left: 4px solid var(--color-border);
  border-radius: 0.25rem;
}

.single-content h3 {
  font-size: clamp(1.5rem, 2vw, 1.8rem);
  position: relative;
  padding-left: 1.2rem;
  border-left: 3px solid var(--color-border);
}

.single-content h4 {
  font-size: clamp(1.3rem, 1.7vw, 1.5rem);
  position: relative;
  padding-left: 1rem;
  border-left: 2px solid var(--color-border);
}

.single-content p {
  margin-bottom: 1.5rem;
  font-size: 1.2rem;
}

.single-content img {
  max-width: 100%;
  height: auto;
  border-radius: .35rem;
  margin: 1.5rem 0;
}

/* 箇条書きリスト（記事ページ専用） */
.single-content ul {
  margin: 1.5rem 0;
  padding-left: 0;
  list-style: none;
}

.single-content ul li {
  position: relative;
  padding-left: 2rem;
  margin-bottom: 0.8rem;
  font-size: 1.2rem;
  line-height: 1.8;
  letter-spacing: 0.02em;
}

.single-content ul li::before {
  content: "▸";
  position: absolute;
  left: 0.5rem;
  color: var(--color-text-main);
  font-size: 1rem;
  opacity: 0.6;
}

.single-content ul ul {
  margin-top: 0.8rem;
  margin-bottom: 0.8rem;
  padding-left: 1.5rem;
}

.single-content ul ul li::before {
  content: "▪";
  left: 0.2rem;
}

/* 番号付きリスト（記事ページ専用） */
.single-content ol {
  margin: 1.5rem 0;
  padding-left: 0;
  list-style: none;
  counter-reset: list-counter;
}

.single-content ol li {
  position: relative;
  padding-left: 3rem;
  margin-bottom: 0.8rem;
  font-size: 1.2rem;
  line-height: 1.8;
  letter-spacing: 0.02em;
  counter-increment: list-counter;
}

.single-content ol li::before {
  content: counter(list-counter);
  position: absolute;
  left: 0.5rem;
  top: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-sidebar);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--color-text-main);
  font-family: var(--font-hero-en);
}

.single-content ol ol {
  margin-top: 0.8rem;
  margin-bottom: 0.8rem;
  padding-left: 2rem;
  counter-reset: list-counter;
}

.single-content ol ol li::before {
  width: 1.5rem;
  height: 1.5rem;
  font-size: 0.8rem;
  background: transparent;
  border: none;
}

/* テーブル（記事ページ専用） */
.single-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  font-size: 1.1rem;
  background: var(--color-bg-main);
  border-radius: 0.5rem;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.single-content th {
  background: var(--color-bg-sidebar);
  font-family: var(--font-hero-en);
  font-weight: 400;
  font-size: 1rem;
  padding: 1rem 1.25rem;
  text-align: left;
  border-bottom: 2px solid var(--color-border);
  color: var(--color-text-main);
  letter-spacing: 0.03em;
}

.single-content td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 1.1rem;
  line-height: 1.7;
  letter-spacing: 0.02em;
}

.single-content tr:last-child td {
  border-bottom: none;
}

.single-content tr:hover {
  background: rgba(228, 223, 215, 0.2);
  transition: background 0.2s ease;
}

/* 引用（記事ページ専用） */
.single-content blockquote {
  margin: 2rem 0;
  padding: 1.5rem 2rem;
  padding-left: 2rem;
  border-left: 4px solid var(--color-border);
  background: var(--color-bg-sidebar);
  border-radius: 0.25rem;
  font-style: italic;
  color: var(--color-text-main);
  font-size: 1.15rem;
  line-height: 1.8;
  letter-spacing: 0.02em;
  position: relative;
}

.single-content blockquote::before {
  content: '"';
  position: absolute;
  left: 1rem;
  top: 0.5rem;
  font-size: 3rem;
  font-family: var(--font-hero-en);
  color: var(--color-border);
  opacity: 0.5;
  line-height: 1;
}

.single-content blockquote p {
  margin-bottom: 0.5rem;
  font-size: 1.15rem;
}

.single-content blockquote p:last-child {
  margin-bottom: 0;
}

.single-content blockquote cite {
  display: block;
  margin-top: 1rem;
  font-size: 0.95rem;
  font-style: normal;
  opacity: 0.7;
  text-align: right;
}

.single-content blockquote cite::before {
  content: "— ";
}

/* 記事内リンク（グラデーションアニメーション） */
.single-content a:not(.post-category):not(.post-tag) {
  color: var(--color-text-main);
  text-decoration: none;
  transition: all 0.3s ease;
}

.single-content a:not(.post-category):not(.post-tag):hover {
  text-decoration: none;
  background: linear-gradient(to right, var(--color-primary-start), var(--color-primary-end));
  background-size: 200% 100%;
  background-position: 100% 0;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradient-slide 0.5s ease forwards;
}

/* 記事カードエリア（前後投稿） */
.single-post-navigation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.single-post-nav-card {
  display: block;
  border: 1px solid var(--color-border);
  border-radius: .35rem;
  overflow: hidden;
  text-decoration: none;
  color: var(--color-text-main);
  background: var(--color-bg-sidebar);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  background-image: none !important;
  -webkit-background-clip: unset !important;
  background-clip: unset !important;
}

.single-post-nav-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  text-decoration: none;
  color: var(--color-text-main);
  background-image: none !important;
  -webkit-background-clip: unset !important;
  background-clip: unset !important;
  -webkit-text-fill-color: var(--color-text-main) !important;
}

.single-post-nav-label {
  padding: 0.75rem 1rem;
  font-size: 0.8rem;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.7;
  border-bottom: 1px solid var(--color-border);
  background-image: none !important;
  -webkit-background-clip: unset !important;
  background-clip: unset !important;
  -webkit-text-fill-color: inherit !important;
}

.single-post-nav-thumb {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  object-position: center;
  display: block;
}

.single-post-nav-placeholder {
  background: #e6ddd0;
  aspect-ratio: 1 / 1;
}

.single-post-nav-title {
  padding: 1rem;
  font-size: 0.95rem;
  font-weight: 400;
  font-family: var(--font-hero-en);
  color: var(--color-text-main);
  line-height: 1.5;
  background-image: none !important;
  -webkit-background-clip: unset !important;
  background-clip: unset !important;
  -webkit-text-fill-color: var(--color-text-main) !important;
}

.single-post-nav-blank {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 200px;
  opacity: 0.5;
}

.single-post-nav-empty {
  padding: 1rem;
  font-size: 0.9rem;
  font-weight: 400;
}

/* スマホ用バナーエリア */
.single-sidebar-mobile {
  display: none;
}

/* モバイル対応 */
@media (max-width: 768px) {
  .front-main {
    padding: 1.5rem 1rem 3rem;
  }

  .hero-thumb-img {
    height: 40vh;
  }

  .post-card-thumb {
    aspect-ratio: 1 / 1;
  }

  .single-main {
    padding: 1.5rem 1rem 3rem;
  }

  .single-sidebar-mobile {
    display: block;
    margin-top: 2rem;
  }

  .single-sidebar-mobile .single-sidebar-banner {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: .35rem;
    overflow: hidden;
    background: #e6ddd0;
  }

  .single-post-navigation {
    grid-template-columns: 1fr;
  }
}

/* Container Query */
@container front-main (max-width: 900px) {
  .hero-section {
    padding-bottom: 2rem;
  }
}

/* =========================================
 *  Article Finder Page
 * ========================================= */
.article-finder-main {
  padding: 2rem 3vw 3rem;
  background: var(--color-bg-main);
  min-height: 100vh;
}

.article-finder-filters {
  margin-bottom: 3rem;
}

/* セクションタイトル */
.article-finder-section-title {
  font-family: var(--font-hero-en);
  font-size: clamp(1.3rem, 2vw, 1.6rem);
  font-weight: 400;
  margin: 0 0 1rem 0;
  color: var(--color-text-main);
}

/* セクション背景 */
.article-finder-search-section,
.article-finder-categories-section,
.article-finder-tags-section {
  padding: 1.5rem;
  background: var(--color-bg-sidebar);
  border: 1px solid var(--color-border);
  border-radius: 0.45rem;
  margin-bottom: 1.5rem;
}

/* 検索窓 */
.article-finder-search {
  width: 100%;
}

.article-finder-input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 0.35rem;
  font-family: var(--font-body-en);
  font-size: 1rem;
  background: var(--color-bg-sidebar);
  color: var(--color-text-main);
  transition: border-color 0.2s ease;
}

.article-finder-input:focus {
  outline: none;
  border-color: var(--color-primary-start);
}

.article-finder-input::placeholder {
  color: rgba(51, 51, 51, 0.5);
}

/* フィルタータイトル */
.article-finder-filter-title {
  font-family: var(--font-hero-en);
  font-size: clamp(1.2rem, 1.8vw, 1.5rem);
  font-weight: 400;
  margin: 0;
}

/* ボタン一覧 */
.article-finder-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.article-finder-btn {
  display: inline-block;
  padding: 0.4rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 1.5rem;
  font-size: 0.9rem;
  font-weight: 400;
  text-decoration: none;
  background: var(--color-bg-sidebar);
  color: var(--color-text-main);
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: var(--font-body-en);
  letter-spacing: 0.02em;
}

.article-finder-btn:hover {
  background: var(--color-border);
  transform: translateY(-1px);
}

.article-finder-btn.is-active {
  background: var(--color-primary-start) !important;
  color: #fff !important;
  border-color: var(--color-primary-start) !important;
  opacity: 1;
}

.article-finder-category-btn {
  /* カテゴリボタンのスタイルは category-tag-colors.js で動的に設定される */
}

.article-finder-tag-btn {
  /* タグボタンのスタイルは category-tag-colors.js で動的に設定される */
}

/* 検索結果エリア */
.article-finder-results {
  margin-top: 2rem;
}

.article-finder-empty,
.article-finder-loading {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--color-text-main);
  opacity: 0.6;
  font-style: italic;
}

.article-finder-results .post-card {
  margin-bottom: 2rem;
}

/* メニューアイコン */
.main-nav a[href*="article-finder"] i.fa-magnifying-glass {
  margin-right: 0.5rem;
  font-size: 0.9em;
}

/* モバイル対応 */
@media (max-width: 768px) {
  .article-finder-main {
    padding: 1.5rem 4vw 2rem;
  }

  .article-finder-buttons {
    gap: 0.4rem;
  }

  .article-finder-btn {
    padding: 0.35rem 0.85rem;
    font-size: 0.85rem;
  }

  .article-finder-results .post-card {
    margin-bottom: 1.5rem;
  }
}