/* ==========================================================
   components.css  -  UI部品スタイル
   ヘッダー / フッター / ボタン / カード / フォーム / SNS 等
========================================================== */


/* ==========================================================
   ヘッダー
========================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(4, 11, 24, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(183,138,67,.15);
  transition: background var(--transition), box-shadow var(--transition);
}

.is-front-page .site-header {
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border-bottom-color: transparent;
  box-shadow: none;
}

.site-header.is-scrolled {
  background: rgba(2, 8, 20, 0.97);
  box-shadow: 0 2px 24px rgba(0,0,0,.4);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 24px;
}

/* ロゴ */
.site-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.site-logo__img {
  height: 40px;
  width: auto;
}

/* グローバルナビ */
.global-nav__list {
  display: flex;
  align-items: center;
  gap: 0;
}

.global-nav__list li a {
  display: block;
  padding: 8px 14px;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--text-sub);
  transition: color var(--transition);
  white-space: nowrap;
}

.global-nav__list li a:hover,
.global-nav__list li.current-menu-item > a {
  color: var(--line-gold);
}

/* ヘッダーアクション */
.site-header__actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.header-cta {
  white-space: nowrap;
}


/* ==========================================================
   ハンバーガーボタン
========================================================== */
.hamburger {
  display: none; /* PC では非表示 */
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger__line {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--text-main);
  transition: transform var(--transition), opacity var(--transition), width var(--transition);
  border-radius: 2px;
}

.is-front-page .hamburger {
  background: rgba(183,138,67,.88);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 999px;
  box-shadow: 0 10px 24px rgba(0,0,0,.18);
}

.is-front-page .hamburger__line {
  width: 18px;
  height: 2px;
  background: #f5ede1;
}

.hamburger.is-active .hamburger__line:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}
.hamburger.is-active .hamburger__line:nth-child(2) {
  opacity: 0;
  width: 0;
}
.hamburger.is-active .hamburger__line:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}


/* ==========================================================
   モバイルナビ（右側ドロワー）
========================================================== */
.mobile-nav {
  display: none; /* JS で visibility を制御 */
  position: fixed;
  inset: 0;
  z-index: 200;
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity var(--transition);
}

.mobile-nav.is-open .mobile-nav__overlay {
  opacity: 1;
}

.mobile-nav__drawer {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(320px, 85vw);
  background: var(--bg-card);
  border-left: var(--border-gold);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(.4,0,.2,1);
  overflow-y: auto;
}

.mobile-nav.is-open .mobile-nav__drawer {
  transform: translateX(0);
}

.mobile-nav__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: var(--border-gold);
  flex-shrink: 0;
}

.mobile-nav__logo {
  display: inline-flex;
  align-items: center;
}

.mobile-nav__logo-img {
  width: auto;
  height: 36px;
  display: block;
}

.mobile-nav__close {
  color: var(--text-sub);
  padding: 4px;
  transition: color var(--transition);
}

.mobile-nav__close:hover {
  color: var(--line-gold);
}

.mobile-nav__list {
  flex: 1;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-nav__list li a {
  display: block;
  padding: 12px 16px;
  font-size: 0.9375rem;
  color: var(--text-main);
  border-radius: var(--radius-sm);
  border-bottom: 1px solid rgba(183,138,67,.1);
  transition: background var(--transition), color var(--transition);
}

.mobile-nav__list li a:hover,
.mobile-nav__list li.current-menu-item > a {
  background: rgba(183,138,67,.08);
  color: var(--line-gold);
}

.mobile-nav__foot {
  padding: 24px;
  border-top: var(--border-gold);
  flex-shrink: 0;
}

.mobile-nav__tagline {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.6;
}

.mobile-nav__sns {
  display: flex;
  gap: 16px;
}


/* ==========================================================
   SNSアイコン（共通）
========================================================== */
.sns-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--text-muted);
  border: 1px solid rgba(183,138,67,.2);
  border-radius: 50%;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}

.sns-icon:hover {
  color: var(--line-gold);
  border-color: var(--line-gold);
  background: rgba(183,138,67,.08);
}


/* ==========================================================
   ボタン
========================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 36px;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), opacity var(--transition),
              transform var(--transition);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

/* ゴールドグラデーションボタン */
.btn--primary {
  background: linear-gradient(to right, #af8653, #8e6c3e, #735631);
  color: #f4efe7;
  border-color: transparent;
  font-weight: 700;
}

.btn--primary:hover {
  background: linear-gradient(to right, #c09a62, #a07848, #855f3a);
  border-color: transparent;
  color: #f4efe7;
}

/* アウトラインボタン */
.btn--outline {
  background: transparent;
  color: var(--line-gold);
  border-color: var(--line-gold);
}

.btn--outline:hover {
  background: rgba(183,138,67,.1);
  color: var(--line-gold);
}

/* ゴーストボタン（白枠） */
.btn--ghost {
  background: transparent;
  color: var(--text-main);
  border-color: rgba(244,239,231,.3);
}

.btn--ghost:hover {
  border-color: var(--text-main);
  background: rgba(244,239,231,.05);
  color: var(--text-main);
}

/* サイズ */
.btn--lg { padding: 20px 48px; font-size: 1.0625rem; min-height: 60px; }
.btn--sm { padding: 10px 22px; font-size: 0.875rem; }

.hero__actions .btn--lg {
  min-height: 72px;
  padding: 22px 32px;
  font-size: 1.0625rem;
  letter-spacing: 0.04em;
}


/* ==========================================================
   カテゴリーラベル
========================================================== */
.category-label {
  display: inline-block;
  padding: 3px 12px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  border-radius: var(--radius-xs);
  background: rgba(183,138,67,.15);
  color: var(--line-gold);
  border: 1px solid rgba(183,138,67,.3);
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
}

.category-label:hover {
  background: rgba(183,138,67,.25);
  color: var(--line-gold);
}

/* カテゴリー別カラー */
.category-label--kindle {
  background: rgba(183,138,67,.15);
  color: var(--line-gold);
  border-color: rgba(183,138,67,.3);
}

.category-label--self-understanding {
  background: rgba(43,78,162,.2);
  color: #7fa0e8;
  border-color: rgba(43,78,162,.4);
}

.category-label--ai {
  background: rgba(0,188,212,.1);
  color: #4dd0e1;
  border-color: rgba(0,188,212,.3);
}


/* ==========================================================
   記事カード
========================================================== */
.post-card {
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-gold);
  border-color: var(--line-soft);
}

.post-card__thumb-link {
  display: block;
  overflow: hidden;
}

.post-card__thumb {
  width: 100%;
  aspect-ratio: 1280 / 670;   /* デフォルトサムネイルと同じ比率（上下の見切れを防ぐ） */
  object-fit: cover;
  transition: transform 0.5s ease;
  display: block;
}

.post-card:hover .post-card__thumb {
  transform: scale(1.03);
}

/* 画像なしのプレースホルダー */
.post-card__thumb--placeholder {
  aspect-ratio: 1280 / 670;
  background: linear-gradient(135deg, #071426 0%, #0d2040 50%, #071426 100%);
}

.post-card__body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.post-card__title {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text-main);
}

.post-card__title a {
  color: inherit;
}

.post-card__title a:hover {
  color: var(--line-gold);
}

.post-card__excerpt {
  font-size: 0.8125rem;
  color: var(--text-sub);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card__date {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-top: auto;
}


/* ==========================================================
   パンくずリスト
========================================================== */
.breadcrumb {
  padding-block: 16px;
}

.breadcrumb__list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.75rem;
  color: var(--text-muted);
}

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

.breadcrumb__item::after {
  content: '›';
  color: var(--text-muted);
  font-size: 0.875rem;
}

.breadcrumb__item:last-child::after {
  display: none;
}

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

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

.breadcrumb__item.is-current span {
  color: var(--text-sub);
}


/* ==========================================================
   フォーム要素
========================================================== */
.newsletter-form__row {
  display: flex;
  gap: 12px;
}

.newsletter-form__input {
  flex: 1;
  padding: 12px 20px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(183,138,67,.2);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  font-size: 0.875rem;
  transition: border-color var(--transition), background var(--transition);
}

.newsletter-form__input::placeholder {
  color: var(--text-muted);
}

.newsletter-form__input:focus {
  outline: none;
  border-color: var(--line-gold);
  background: rgba(183,138,67,.05);
}


/* ==========================================================
   タブナビゲーション（人気記事セクション）
========================================================== */
.tab-nav {
  display: flex;
  gap: 4px;
  margin-bottom: 32px;
  border-bottom: 1px solid rgba(183,138,67,.15);
  padding-bottom: 0;
}

.tab-nav__btn {
  padding: 10px 20px;
  font-size: 0.8125rem;
  color: var(--text-muted);
  border-radius: var(--radius-xs) var(--radius-xs) 0 0;
  border: 1px solid transparent;
  border-bottom: none;
  transition: color var(--transition), background var(--transition), border-color var(--transition);
  position: relative;
  bottom: -1px;
}

.tab-nav__btn:hover {
  color: var(--text-sub);
}

.tab-nav__btn.is-active {
  color: var(--line-gold);
  background: rgba(183,138,67,.06);
  border-color: rgba(183,138,67,.2);
  border-bottom-color: var(--bg-main);
}

.tab-panel {
  display: none;
}

.tab-panel.is-active {
  display: block;
}


/* ==========================================================
   シェアアイコン（記事内）
========================================================== */
.share-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  color: var(--text-muted);
  border: 1px solid rgba(183,138,67,.2);
  transition: all var(--transition);
}

.share-icon:hover {
  border-color: var(--line-gold);
  color: var(--line-gold);
  background: rgba(183,138,67,.08);
}

.article-share {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-block: 24px;
}

.article-share--sidebar {
  flex-direction: column;
  align-items: flex-start;
}

.article-share__label {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.article-share__icons {
  display: flex;
  gap: 8px;
}


/* ==========================================================
   サイドバー
========================================================== */
.article-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 24px);
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.sidebar-widget {
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px;
}

.sidebar-widget__title {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(183,138,67,.15);
  display: flex;
  align-items: center;
  gap: 8px;
}

.sidebar-widget__title-deco {
  color: var(--line-gold);
  font-size: 0.6rem;
}

/* 著者 */
.sidebar-author {
  text-align: center;
}

.sidebar-author__img {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  margin-inline: auto;
  margin-bottom: 12px;
  border: 2px solid var(--line-soft);
}

.sidebar-author__name {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.sidebar-author__role {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 8px;
}

.sidebar-author__desc {
  font-size: 0.8rem;
  color: var(--text-sub);
  margin-bottom: 12px;
}

.sidebar-author__link {
  font-size: 0.8125rem;
  color: var(--line-gold);
}

/* 人気記事 */
.sidebar-popular {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sidebar-popular__item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.sidebar-popular__rank {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  background: var(--line-gold);
  color: var(--bg-deep);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
}

.sidebar-popular__inner {
  display: flex;
  gap: 10px;
  flex: 1;
}

.sidebar-popular__thumb {
  width: 60px;
  height: 45px;
  object-fit: cover;
  border-radius: var(--radius-xs);
  flex-shrink: 0;
}

.sidebar-popular__title {
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--text-main);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 4px;
}

.sidebar-popular__inner:hover .sidebar-popular__title {
  color: var(--line-gold);
}

.sidebar-popular__date {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* カテゴリー一覧 */
.sidebar-categories {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-categories__link {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  font-size: 0.8125rem;
  color: var(--text-sub);
  border-bottom: 1px solid rgba(183,138,67,.08);
  transition: color var(--transition);
}

.sidebar-categories__link:hover {
  color: var(--line-gold);
}

.sidebar-categories__count {
  color: var(--text-muted);
  font-size: 0.75rem;
}

/* 扉CTA */
.sidebar-door-cta {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-sm);
  min-height: 200px;
}

.sidebar-door-cta__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
}

.sidebar-door-cta__body {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 24px 16px;
}

.sidebar-door-cta__title {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin-bottom: 8px;
}

.sidebar-door-cta__sub {
  font-size: 0.75rem;
  color: var(--text-sub);
  margin-bottom: 16px;
}

/* サイドバーメルマガ */
.sidebar-newsletter__desc {
  font-size: 0.8rem;
  color: var(--text-sub);
  margin-bottom: 16px;
}

.sidebar-share {
  display: flex;
  gap: 10px;
}


/* ==========================================================
   フッター
========================================================== */
.site-footer {
  background: var(--bg-deep);
  border-top: var(--border-gold);
  margin-top: 0;
  padding-top: 48px;
}

.footer-col__title {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(183,138,67,.15);
}

/* ブランドカラム */
.footer-logo {
  display: inline-block;
  margin-bottom: 16px;
}

.footer-logo__img {
  display: block;
  max-width: 160px;
  height: auto;
  opacity: 0.9;
  transition: opacity var(--transition);
}

.footer-logo:hover .footer-logo__img {
  opacity: 1;
}

.footer-tagline {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.footer-sns {
  display: flex;
  gap: 10px;
}

/* フッターナビ */
.footer-nav__list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-nav__list li a {
  font-size: 0.8125rem;
  color: var(--text-sub);
  transition: color var(--transition);
}

.footer-nav__list li a:hover {
  color: var(--line-gold);
}

/* 著者 */
.footer-author {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.footer-author__img {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--line-soft);
}

.footer-author__name {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.footer-author__role {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 8px;
}

.footer-author__link {
  font-size: 0.8125rem;
  color: var(--line-gold);
}

/* フッターメルマガ */
.footer-newsletter {
  padding-block: 32px;
  border-bottom: var(--border-gold);
  display: flex;
  gap: 32px;
  align-items: center;
}

.footer-newsletter__title {
  font-size: 0.875rem;
  font-weight: 600;
  white-space: nowrap;
}

.footer-newsletter__desc {
  font-size: 0.8125rem;
  color: var(--text-muted);
  white-space: nowrap;
}

/* コピーライト */
.footer-bottom {
  padding-block: 24px;
  text-align: center;
}

.footer-copyright {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.footer-copyright a {
  color: var(--text-muted);
}

.footer-copyright a:hover {
  color: var(--line-gold);
}


/* ==========================================================
   ページネーション
========================================================== */
.pagination-wrap {
  margin-top: 56px;
  display: flex;
  justify-content: center;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a,
.nav-links span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding-inline: 12px;
  font-size: 0.875rem;
  border: 1px solid rgba(183,138,67,.2);
  border-radius: var(--radius-xs);
  color: var(--text-sub);
  transition: all var(--transition);
}

.nav-links a:hover {
  border-color: var(--line-gold);
  color: var(--line-gold);
  background: rgba(183,138,67,.08);
}

.nav-links .current {
  background: var(--line-gold);
  border-color: var(--line-gold);
  color: var(--bg-deep);
  font-weight: 700;
}


/* ==========================================================
   記事ナビ（前後記事）
========================================================== */
.post-navigation {
  margin-top: 48px;
  padding-top: 32px;
  border-top: var(--border-card);
}

.post-navigation__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.post-nav-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px;
  background: var(--bg-card);
  border: var(--border-card);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), background var(--transition);
}

.post-nav-link:hover {
  border-color: var(--line-soft);
  background: rgba(183,138,67,.05);
}

.post-nav-link--next {
  text-align: right;
}

.post-nav-link__dir {
  font-size: 0.75rem;
  color: var(--line-gold);
  letter-spacing: 0.05em;
}

.post-nav-link__title {
  font-size: 0.8125rem;
  color: var(--text-sub);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}


/* ==========================================================
   関連記事セクション
========================================================== */
.related-articles {
  margin-top: 56px;
  padding-top: 40px;
  border-top: var(--border-card);
}

.related-articles__title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 28px;
  color: var(--text-main);
}


/* ==========================================================
   タグバッジ
========================================================== */
.article-tags {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid rgba(183,138,67,.1);
}

.article-tags__label {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: block;
  margin-bottom: 10px;
}

.article-tags__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-badge {
  padding: 4px 12px;
  font-size: 0.75rem;
  color: var(--text-sub);
  border: 1px solid rgba(183,138,67,.2);
  border-radius: 20px;
  transition: all var(--transition);
}

.tag-badge:hover {
  border-color: var(--line-gold);
  color: var(--line-gold);
  background: rgba(183,138,67,.08);
}


/* ==========================================================
   エラー / 空ページ
========================================================== */
.no-posts {
  text-align: center;
  padding: 64px 24px;
  color: var(--text-sub);
}

.no-posts-message {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
  font-size: 0.875rem;
}