/* =============================================
   Blog Page – Styles
   ============================================= */

/* ---------- PAGE HERO ---------- */
.page-hero {
  position: relative;
  height: 56vh;
  min-height: 400px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.page-hero__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.6s ease;
}

.page-hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top,
    rgba(0,0,0,0.80) 0%,
    rgba(0,0,0,0.45) 50%,
    rgba(0,0,0,0.20) 100%
  );
}

.page-hero__content {
  position: relative;
  z-index: 2;
  padding: clamp(40px, 6vw, 80px) clamp(24px, 5vw, 80px);
}

.page-hero__label {
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.35em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 12px;
}

.page-hero__title {
  font-family: 'Cormorant Garamond', 'Noto Serif JP', serif;
  font-size: clamp(36px, 6vw, 80px);
  font-weight: 600;
  color: var(--white);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

/* ---------- SECTION LABEL ---------- */
.section-label {
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.35em;
  color: var(--gold);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 40px;
}

.section-label::before {
  content: '';
  display: block;
  width: 40px;
  height: 1px;
  background: var(--gold);
}

/* ---------- BREADCRUMB ---------- */
.breadcrumb {
  padding: 20px 0;
  background: var(--cream);
}

.breadcrumb__list {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.breadcrumb__item {
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.breadcrumb__item a {
  color: var(--muted);
  transition: color var(--transition);
}

.breadcrumb__item a:hover {
  color: var(--black);
}

.breadcrumb__sep {
  color: var(--border);
}

/* ---------- BLOG SECTION ---------- */
.blog-section {
  padding: clamp(64px, 10vw, 120px) 0 clamp(80px, 12vw, 160px);
  background: var(--cream);
}

.blog-section__heading {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(26px, 3.5vw, 48px);
  font-weight: 600;
  color: var(--black);
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: clamp(48px, 6vw, 80px);
}

/* ---------- BLOG GRID ---------- */
.blog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

@media (min-width: 640px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }
}

@media (min-width: 1024px) {
  .blog-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: clamp(24px, 2.5vw, 40px);
  }
}

/* Featured post */
.blog-item--featured {
  grid-column: span 1;
}

@media (min-width: 640px) {
  .blog-item--featured {
    grid-column: span 2;
  }
}

@media (min-width: 1024px) {
  .blog-item--featured {
    grid-column: span 3;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(40px, 5vw, 80px);
    align-items: center;
  }
}

.blog-item {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.blog-item__thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: var(--border);
}

.blog-item--featured .blog-item__thumb {
  aspect-ratio: 16 / 10;
}

.blog-item__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.blog-item:hover .blog-item__thumb img {
  transform: scale(1.04);
}

.blog-item__body {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.blog-item__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.blog-item__category {
  font-family: 'Montserrat', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  border: 1px solid var(--gold);
  padding: 3px 10px;
}

.blog-item__date {
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.blog-item__title {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(18px, 1.8vw, 22px);
  font-weight: 600;
  color: var(--black);
  line-height: 1.4;
  letter-spacing: -0.01em;
  transition: color var(--transition);
}

.blog-item:hover .blog-item__title {
  color: var(--gold);
}

.blog-item--featured .blog-item__title {
  font-size: clamp(22px, 2.5vw, 32px);
}

.blog-item__excerpt {
  font-size: 13px;
  color: var(--muted);
  line-height: 2;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-item__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--black);
  margin-top: 8px;
}

.blog-item__link::after {
  content: '';
  display: block;
  width: 32px;
  height: 1px;
  background: currentColor;
  transition: width var(--transition);
}

.blog-item:hover .blog-item__link::after {
  width: 52px;
}

/* ==============================================
   SINGLE ARTICLE — 記事詳細ページ
   トレンド準拠：16px / line-height 1.9 / max-width 720px
   ============================================= */

.single-article {
  padding: clamp(40px, 6vw, 80px) 0 clamp(64px, 10vw, 120px);
  background: #f0ede8;
}

/* ---- カード型レイアウト ---- */
.single-article__inner {
  max-width: 760px;
  margin-inline: auto;
  background: #fff;
  border-radius: 2px;
  padding: clamp(28px, 5vw, 56px) clamp(20px, 5vw, 56px) clamp(40px, 6vw, 64px);
  box-shadow: 0 2px 24px rgba(0,0,0,0.06);
}

/* ---- メタ情報（日付・カテゴリー） ---- */
.single-article__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid #e8e4de;
}

.single-article__date {
  font-family: 'Montserrat', sans-serif;
  font-size: 12px;
  color: #999;
  letter-spacing: 0.08em;
}

.single-article__category {
  font-family: 'Montserrat', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold, #D4AF37);
  border: 1px solid var(--gold, #D4AF37);
  padding: 3px 10px;
  border-radius: 2px;
}

/* ---- 読了時間 ---- */
.single-article__readtime {
  font-size: 11px;
  color: #aaa;
  font-family: 'Montserrat', sans-serif;
  letter-spacing: 0.06em;
  margin-left: auto;
}

/* ---- 目次（TOC） ---- */
.toc-box {
  background: #faf9f7;
  border: 2px solid #e8e4de;
  border-top: 3px solid var(--gold, #D4AF37);
  padding: 0;
  margin: 0 0 2.8em;
  border-radius: 4px;
  overflow: hidden;
}

.toc-box__title {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 13px;
  font-weight: 700;
  color: var(--black, #1A2B4A);
  background: #fff;
  margin: 0;
  padding: 14px 20px;
  border-bottom: 1px solid #e8e4de;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}

.toc-box__toggle {
  font-size: 11px;
  color: var(--gold, #D4AF37);
  font-weight: 700;
  font-family: 'Montserrat', sans-serif;
  letter-spacing: 0.05em;
}

.toc-box__list {
  list-style: none !important;
  padding: 16px 20px !important;
  margin: 0 !important;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.toc-box__item {
  list-style: none !important;
}

.toc-box__item a {
  font-size: 14px;
  color: #444;
  text-decoration: none;
  line-height: 1.7;
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 4px 0;
  transition: color 0.2s;
  border-bottom: none !important;
}

.toc-box__item a:hover {
  color: var(--gold, #D4AF37);
}

.toc-box__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  background: var(--gold, #D4AF37);
  color: #fff;
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 700;
  border-radius: 50%;
  line-height: 1;
}

/* ---- 本文タイポグラフィ（核心） ---- */
.single-article__content {
  font-size: 16px;
  color: #333;
  line-height: 1.9;
  letter-spacing: 0.01em;
  word-break: break-word;
  overflow-wrap: break-word;
}

.single-article__content > * + * {
  margin-top: 0;
}

/* 段落 */
.single-article__content p {
  font-size: 16px;
  line-height: 1.9;
  margin-top: 0;
  margin-bottom: 1.6em;
  color: #333;
}

/* H2 — セクション大見出し */
.single-article__content h2 {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 700;
  color: #fff;
  line-height: 1.5;
  margin-top: 3.2em;
  margin-bottom: 1.2em;
  padding: 14px 20px;
  background: var(--black, #1A2B4A);
  border-left: 4px solid var(--gold, #D4AF37);
  border-radius: 0 2px 2px 0;
}

/* H3 — 小見出し */
.single-article__content h3 {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 700;
  color: var(--black, #1A2B4A);
  line-height: 1.6;
  margin-top: 2.4em;
  margin-bottom: 0.9em;
  padding: 0 0 10px 14px;
  border-left: 3px solid var(--gold, #D4AF37);
  border-bottom: 1px solid #e8e4de;
}

/* H4 */
.single-article__content h4 {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 15px;
  font-weight: 700;
  color: var(--black, #1A2B4A);
  margin-top: 2em;
  margin-bottom: 0.6em;
}

/* 強調 — ゴールドマーカー */
.single-article__content strong {
  font-weight: 700;
  background: linear-gradient(transparent 55%, rgba(212,175,55,0.3) 55%);
  padding-bottom: 1px;
}

.single-article__content em {
  font-style: normal;
  color: #555;
  border-bottom: 1px dashed #ccc;
}

/* リンク */
.single-article__content a {
  color: #2563eb;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(37,99,235,0.4);
  transition: color 0.2s;
}

.single-article__content a:hover {
  color: var(--gold, #D4AF37);
  text-decoration-color: var(--gold, #D4AF37);
}

/* 水平線 */
.single-article__content hr {
  border: none;
  height: 1px;
  background: linear-gradient(to right, var(--gold, #D4AF37), transparent);
  margin: 3em 0;
}

/* リスト */
.single-article__content ul {
  list-style: none;
  padding-left: 0;
  margin-bottom: 1.8em;
}

.single-article__content ul li {
  padding-left: 1.5em;
  position: relative;
  margin-bottom: 0.7em;
  font-size: 16px;
  line-height: 1.9;
}

.single-article__content ul li::before {
  content: '';
  position: absolute;
  left: 2px;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gold, #D4AF37);
  opacity: 0.85;
}

.single-article__content ol {
  padding-left: 1.8em;
  margin-bottom: 1.8em;
}

.single-article__content ol li {
  font-size: 16px;
  line-height: 1.9;
  margin-bottom: 0.7em;
  padding-left: 0.3em;
}

/* 引用 */
.single-article__content blockquote {
  margin: 2.4em 0;
  padding: 20px 24px 20px 28px;
  background: #f8f7f5;
  border-left: 4px solid var(--gold, #D4AF37);
  font-size: 15px;
  color: #555;
  line-height: 1.9;
  border-radius: 0 4px 4px 0;
}

.single-article__content blockquote p {
  margin-bottom: 0;
  font-size: 15px;
}

/* 画像 */
.single-article__content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 2em auto;
  border-radius: 4px;
}

.single-article__content figure {
  margin: 2em 0;
}

.single-article__content figcaption {
  font-size: 12px;
  color: #aaa;
  text-align: center;
  margin-top: 8px;
  line-height: 1.6;
}

/* テーブル */
.single-article__content table {
  width: 100%;
  border-collapse: collapse;
  margin: 2em 0;
  font-size: 14px;
  display: block;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.single-article__content table th {
  background: var(--black, #1A2B4A);
  color: #fff;
  padding: 12px 16px;
  text-align: left;
  font-weight: 700;
  font-size: 13px;
  white-space: nowrap;
}

.single-article__content table td {
  padding: 11px 16px;
  border-bottom: 1px solid #e8e4de;
  line-height: 1.8;
  vertical-align: top;
}

.single-article__content table tr:nth-child(even) td {
  background: #faf9f7;
}

/* コード */
.single-article__content code {
  background: #f0ede8;
  font-family: 'Courier New', monospace;
  font-size: 13px;
  padding: 2px 7px;
  border-radius: 3px;
  color: #b5451b;
}

.single-article__content pre {
  background: #1e1e1e;
  color: #d4d4d4;
  padding: 20px 24px;
  overflow-x: auto;
  margin: 2em 0;
  font-family: 'Courier New', monospace;
  font-size: 13px;
  line-height: 1.8;
  border-radius: 4px;
}

.single-article__content pre code {
  background: none;
  padding: 0;
  color: inherit;
  border-radius: 0;
  font-size: inherit;
}

/* ---- 前後記事ナビ ---- */
.single-article__nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin-top: 56px;
  background: #e8e4de;
  border: 1px solid #e8e4de;
  border-radius: 2px;
  overflow: hidden;
}

.single-nav__prev,
.single-nav__next {
  background: #fff;
}

.single-nav__link {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 24px;
  transition: background 0.2s;
}

.single-nav__link:hover {
  background: #faf9f7;
}

.single-nav__next .single-nav__link {
  align-items: flex-end;
  text-align: right;
}

.single-nav__label {
  font-family: 'Montserrat', sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold, #D4AF37);
  display: flex;
  align-items: center;
  gap: 8px;
}

.single-nav__next .single-nav__label {
  justify-content: flex-end;
}

.single-nav__title {
  font-size: 13px;
  color: #444;
  line-height: 1.65;
  font-weight: 500;
}

/* ---- モバイル最適化 ---- */
@media (max-width: 640px) {
  .single-article__inner {
    padding: 24px 18px 40px;
    border-radius: 0;
    box-shadow: none;
  }

  .single-article__content {
    font-size: 15px;
  }

  .single-article__content p,
  .single-article__content ul li,
  .single-article__content ol li {
    font-size: 15px;
  }

  .single-article__content h2 {
    font-size: 17px;
    padding: 12px 16px;
  }

  .single-article__content h3 {
    font-size: 15px;
  }

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

  .single-article__readtime {
    margin-left: 0;
  }
}

/* ---------- NOTICE (WordPress redirect) ---------- */
.blog-notice {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 40px;
  text-align: center;
  margin-top: clamp(40px, 5vw, 80px);
}

.blog-notice__text {
  font-size: 14px;
  color: var(--muted);
  line-height: 2.2;
  margin-bottom: 32px;
}

.blog-notice__btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 40px;
  font-family: 'Montserrat', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  background: var(--black);
  color: var(--white);
  border: 1px solid var(--black);
  transition: all var(--transition);
}

.blog-notice__btn:hover {
  background: transparent;
  color: var(--black);
}

/* ---------- CTA ---------- */
.cta {
  padding: clamp(64px, 10vw, 140px) 0;
  background: var(--white);
}

.cta__inner {
  text-align: center;
  max-width: 680px;
  margin-inline: auto;
}

.cta__label {
  font-family: 'Montserrat', sans-serif;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.35em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.cta__label::before,
.cta__label::after {
  content: '';
  display: block;
  width: 32px;
  height: 1px;
  background: var(--gold);
}

.cta__title {
  font-family: 'Cormorant Garamond', serif;
  font-size: clamp(28px, 4vw, 52px);
  font-weight: 600;
  color: var(--black);
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.cta__desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 2.2;
  margin-bottom: 48px;
}

.cta__btns {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

@media (min-width: 560px) {
  .cta__btns {
    flex-direction: row;
    justify-content: center;
  }
}

.cta__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 18px 48px;
  font-family: 'Montserrat', sans-serif;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  transition: all var(--transition);
  white-space: nowrap;
}

.cta__btn--dark {
  background: var(--black);
  color: var(--white);
  border: 1px solid var(--black);
}

.cta__btn--dark:hover {
  background: transparent;
  color: var(--black);
}

.cta__btn--line {
  background: var(--line);
  color: var(--white);
  border: 1px solid var(--line);
}

.cta__btn--line:hover {
  background: transparent;
  color: var(--line);
}