/* ===========================
   旅行ブログ - メインスタイル
   =========================== */

/* --- リセット & ベース --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg:        #FAFAF8;
  --color-surface:   #FFFFFF;
  --color-border:    #E8E6E1;
  --color-text:      #1A1A1A;
  --color-muted:     #888880;
  --color-accent:    #2A7C8E;
  --color-accent-lt: #EBF4F6;
  --color-tag-bg:    #F0F0EC;

  --font-display: 'Georgia', '游明朝', 'YuMincho', serif;
  --font-body:    -apple-system, BlinkMacSystemFont, 'Hiragino Sans', 'Noto Sans JP', sans-serif;

  --radius-sm: 6px;
  --radius-md: 12px;
  --shadow:    0 1px 4px rgba(0,0,0,0.07);
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

/* --- レイアウト --- */
.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
}

.container--wide {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ===========================
   ヘッダー
   =========================== */
.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  max-width: 1680px;
  width: 96%;
  margin: 0 auto;
  padding: 0 20px;
}

.site-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: normal;
  letter-spacing: 0.04em;
  color: var(--color-text);
}

.site-logo span {
  color: var(--color-accent);
}

.site-nav {
  display: flex;
  gap: 24px;
  align-items: center;
}

.site-nav a {
  font-size: 0.875rem;
  color: var(--color-muted);
  transition: color 0.2s;
}

.site-nav a:hover {
  color: var(--color-accent);
}

.nav-search-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  border-radius: 50%;
  font-size: 0.95rem;
  transition: background 0.15s;
}
.nav-search-btn:hover {
  background: var(--color-accent-lt);
}

/* ===========================
   ヒーロー（トップページ）
   =========================== */
.hero {
  padding: 28px 0 24px;
  text-align: center;
}

.hero__eyebrow {
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.hero__title {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.4vw, 1.8rem);
  font-weight: normal;
  line-height: 1.4;
  color: var(--color-text);
  margin-bottom: 8px;
}

.hero__desc {
  font-size: 0.85rem;
  color: var(--color-muted);
  max-width: 600px;
  margin: 0 auto;
}

/* ===========================
   記事カード一覧
   =========================== */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  padding: 0 0 80px;
}

.post-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: box-shadow 0.2s, transform 0.2s;
  cursor: pointer;
}

.post-card:hover {
  box-shadow: 0 4px 16px rgba(0,0,0,0.10);
  transform: translateY(-2px);
}

.post-card__thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: var(--color-accent-lt);
}

.post-card__thumb--placeholder {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--color-accent-lt) 0%, #D4EEF3 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
}

.post-card__body {
  padding: 20px 24px 24px;
}

.post-card__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

/* シグネチャ要素：地域タグ */
.post-card__place {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  color: var(--color-accent);
  background: var(--color-accent-lt);
  padding: 2px 10px;
  border-radius: 99px;
  font-weight: 500;
}

.post-card__date {
  font-size: 0.75rem;
  color: var(--color-muted);
}

.post-card__title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: normal;
  line-height: 1.5;
  margin-bottom: 8px;
  color: var(--color-text);
}

.post-card__excerpt {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
}

.tag {
  font-size: 0.7rem;
  color: var(--color-muted);
  background: var(--color-tag-bg);
  padding: 3px 10px;
  border-radius: 99px;
}

/* ===========================
   記事詳細ページ
   =========================== */
.article-header {
  padding: 48px 0 32px;
}

.article-header__place {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  color: var(--color-accent);
  background: var(--color-accent-lt);
  padding: 4px 14px;
  border-radius: 99px;
  margin-bottom: 20px;
  font-weight: 500;
}

.article-header__title {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: normal;
  line-height: 1.4;
  margin-bottom: 16px;
}

.article-header__meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.8rem;
  color: var(--color-muted);
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.article-header__thumb {
  width: 100%;
  border-radius: var(--radius-md);
  aspect-ratio: 16 / 9;
  object-fit: cover;
  margin: 32px 0;
  background: var(--color-accent-lt);
}

/* --- 記事本文 --- */
.article-body {
  padding-bottom: 80px;
}

.article-body p {
  margin-bottom: 1.6em;
  font-size: 1rem;
  line-height: 1.9;
}

.article-body h2 {
  font-family: var(--font-body);
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.6;
  margin: 2.6em 0 1em;
  padding: 12px 18px;
  background: var(--color-accent-lt);
  border-left: 5px solid var(--color-accent);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.article-body h3 {
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 700;
  margin: 2em 0 0.6em;
  padding-left: 12px;
  border-left: 3px solid var(--color-accent);
  color: var(--color-text);
}

.article-body ul,
.article-body ol {
  padding-left: 1.4em;
  margin-bottom: 1.6em;
}

.article-body li {
  margin-bottom: 0.4em;
}

.article-body a {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-body img {
  border-radius: var(--radius-md);
  margin: 1.6em 0;
}

/* アフィリエイトボックス */
.affiliate-box {
  border-left: 5px solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 20px 24px;
  margin: 2em 0;
  background: var(--color-accent-lt);
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.affiliate-box__icon {
  font-size: 1.6rem;
  flex-shrink: 0;
}

.affiliate-box__text {
  flex: 1;
}

.affiliate-box__label {
  font-size: 0.7rem;
  color: var(--color-accent);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.affiliate-box__title {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.affiliate-box__desc {
  font-size: 0.825rem;
  color: var(--color-muted);
}

.btn {
  display: inline-block;
  margin-top: 12px;
  padding: 8px 20px;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  transition: opacity 0.2s;
}

.btn:hover {
  opacity: 0.85;
}

/* ===========================
   フッター
   =========================== */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 32px 0;
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-muted);
}
.footer-blogmura {
  margin-top: 18px !important;
}
.footer-blogmura img {
  display: inline-block !important;
  margin: 0 auto;
}

/* ===========================
   管理画面
   =========================== */
.admin-layout {
  display: grid;
  grid-template-columns: 200px 1fr;
  min-height: 100vh;
}

.admin-sidebar {
  background: var(--color-text);
  color: #fff;
  padding: 24px 0;
}

.admin-sidebar__logo {
  font-family: var(--font-display);
  font-size: 1rem;
  padding: 0 20px 24px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 16px;
}

.admin-sidebar__logo span {
  color: var(--color-accent);
}

.admin-nav a {
  display: block;
  padding: 10px 20px;
  font-size: 0.875rem;
  color: rgba(255,255,255,0.7);
  transition: background 0.15s, color 0.15s;
}

.admin-nav a:hover,
.admin-nav a.active {
  background: rgba(255,255,255,0.08);
  color: #fff;
}

.admin-main {
  padding: 40px;
  background: var(--color-bg);
}

.admin-main h1 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: normal;
  margin-bottom: 32px;
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-muted);
  margin-bottom: 6px;
  letter-spacing: 0.05em;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.95rem;
  background: var(--color-surface);
  color: var(--color-text);
  transition: border-color 0.2s;
  outline: none;
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--color-accent);
}

.form-textarea {
  min-height: 320px;
  resize: vertical;
  line-height: 1.8;
}

.btn--outline {
  background: transparent;
  border: 1px solid var(--color-accent);
  color: var(--color-accent);
}

.btn--outline:hover {
  background: var(--color-accent);
  color: #fff;
  opacity: 1;
}

/* ===========================
   3カラムレイアウト（左メニュー・右広告枠）
   =========================== */
.page-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr) 280px;
  gap: 32px;
  max-width: 1680px;
  width: 96%;
  margin: 0 auto;
  padding: 0 20px;
  align-items: start;
}

/* 記事一覧・検索結果ページでは960px上限を解除し、画面幅いっぱいにグリッドを広げる */
.page-layout__main .container--wide {
  max-width: none;
}

.page-layout__main {
  min-width: 0;
}

/* --- 左サイドバー --- */
.sidebar-left {
  position: sticky;
  top: 76px;
  align-self: start;
}

.sidebar-left__inner {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  max-height: calc(100vh - 96px);
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar-close-btn { display: none; }

.sidebar-search {
  display: flex;
  gap: 6px;
  margin-bottom: 22px;
}
.sidebar-search__input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-family: var(--font-body);
  outline: none;
}
.sidebar-search__input:focus { border-color: var(--color-accent); }
.sidebar-search__btn {
  padding: 8px 12px;
  background: var(--color-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.sidebar-nav__title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.sidebar-nav__all {
  display: flex;
  justify-content: space-between;
  padding: 8px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 8px;
}
.sidebar-nav__all.active {
  background: var(--color-accent-lt);
  color: var(--color-accent);
  font-weight: 600;
}
.sidebar-nav__area summary {
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 8px;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  list-style: none;
}
.sidebar-nav__area summary::-webkit-details-marker { display: none; }
.sidebar-nav__area summary::marker { content: ""; }
.sidebar-nav__area summary::after {
  content: '›';
  margin-left: auto;
  transform: rotate(90deg);
  transition: transform 0.15s;
  color: var(--color-muted);
}
.sidebar-nav__area[open] summary::after { transform: rotate(270deg); }
.sidebar-nav__area summary:hover { background: var(--color-accent-lt); }
.sidebar-nav__category-list {
  list-style: none;
  padding-left: 14px;
  margin: 2px 0 12px;
}
.sidebar-nav__category-list a {
  display: flex;
  justify-content: space-between;
  padding: 6px 8px;
  font-size: 0.8rem;
  color: var(--color-muted);
  border-radius: var(--radius-sm);
}
.sidebar-nav__category-list a:hover { color: var(--color-accent); }
.sidebar-nav__category-list a.active {
  background: var(--color-accent-lt);
  color: var(--color-accent);
  font-weight: 600;
}
.sidebar-nav__count { font-size: 0.68rem; opacity: 0.65; }

.sidebar-featured {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--color-border);
}
.sidebar-featured__title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.sidebar-featured__list { list-style: none; }
.sidebar-featured__item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 4px;
}
.sidebar-featured__rank {
  flex-shrink: 0;
  width: 18px; height: 18px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.66rem;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.sidebar-featured__thumb {
  width: 42px; height: 42px;
  border-radius: 6px;
  object-fit: cover;
  flex-shrink: 0;
}
.sidebar-featured__thumb--placeholder {
  display: flex; align-items: center; justify-content: center;
  background: var(--color-accent-lt);
  font-size: 1rem;
}
.sidebar-featured__text {
  font-size: 0.8rem;
  line-height: 1.4;
  color: var(--color-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* --- 右サイドバー：プロフィール＋X＋ブログ村をまとめた1つのカード --- */
.sidebar-right__card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 22px 18px;
  margin-top: 20px;
}
.sidebar-right__card:first-child {
  margin-top: 0;
}

/* --- にほんブログ村バナー --- */
.sidebar-blogmura {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.sidebar-blogmura img {
  max-width: 100%;
  height: auto;
}

/* --- 運営者プロフィール --- */
.sidebar-profile {
  text-align: center;
}
.sidebar-profile__avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto 10px;
}
.sidebar-profile__name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 8px;
}
.sidebar-profile__bio {
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--color-muted);
  margin-bottom: 10px;
}
.sidebar-profile__link {
  font-size: 0.78rem;
  color: var(--color-accent);
  font-weight: 600;
}
.sidebar-profile__link:hover { text-decoration: underline; }

/* コンパクト版（右サイドバー用：説明文なし） */
.sidebar-profile--compact .sidebar-profile__avatar {
  width: 56px;
  height: 56px;
}
.sidebar-profile--compact .sidebar-profile__name {
  margin-bottom: 6px;
}

/* --- Xアカウント --- */
.sidebar-x {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  text-align: center;
}
.sidebar-x__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  background: #000;
  color: #fff;
  border-radius: 99px;
  font-size: 0.82rem;
  font-weight: 600;
}
.sidebar-x__link:hover { opacity: 0.85; }
.sidebar-x__icon { font-size: 0.85rem; }

/* --- 右サイドバー（プロフィール・X・ブログ村バナー、記事ページはミニ目次も） --- */
.sidebar-right {
  display: block;
  position: sticky;
  top: 76px;
  align-self: start;
}
.sidebar-right__placeholder {
  background: var(--color-tag-bg);
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 40px 16px;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.85rem;
}
.sidebar-right__placeholder-icon { font-size: 1.6rem; margin-bottom: 8px; }
.sidebar-right__placeholder-sub { font-size: 0.7rem; margin-top: 6px; }

.mini-toc {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px;
  max-height: calc(100vh - 96px);
  overflow-y: auto;
  overflow-x: hidden;
}
.mini-toc__title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.mini-toc__list {
  list-style: none;
}
.mini-toc__list a {
  display: block;
  padding: 6px 0;
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--color-text);
  border-left: 2px solid transparent;
  padding-left: 10px;
}
.mini-toc__list a:hover {
  color: var(--color-accent);
  border-left-color: var(--color-accent);
}
.mini-toc__list a.active {
  color: var(--color-accent);
  font-weight: 700;
  border-left-color: var(--color-accent);
}
.mini-toc__list .mini-toc__sub a.active {
  color: var(--color-accent);
}
.mini-toc__list .mini-toc__sub a {
  font-size: 0.75rem;
  color: var(--color-muted);
  padding-left: 20px;
}

/* --- ハンバーガーメニュー（スマホ用） --- */
.sidebar-toggle-btn { display: none; }
.sidebar-overlay { display: none; }

@media (max-width: 1080px) {
  .page-layout { grid-template-columns: 220px minmax(0, 1fr); }
  .sidebar-right { display: none; }
}

@media (max-width: 860px) {
  .page-layout {
    display: block;
    padding: 0 20px;
  }
  .sidebar-left {
    position: fixed;
    top: 0; left: 0;
    height: 100vh;
    height: 100dvh; /* iOS Safariのアドレスバー変動に対応 */
    width: 280px;
    max-width: 82vw;
    z-index: 9999;
    background: var(--color-surface);
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    padding: 0;
  }
  .sidebar-left.is-open { transform: translateX(0); }
  .sidebar-left__inner {
    border-radius: 0;
    width: 100%;
    height: 100%;
    max-height: 100%;
    box-sizing: border-box;
    box-shadow: 2px 0 16px rgba(0,0,0,0.14);
  }
  .sidebar-close-btn {
    display: block;
    margin: 0 0 16px auto;
    background: none;
    border: none;
    font-size: 1.1rem;
    color: var(--color-muted);
    cursor: pointer;
  }
  .sidebar-toggle-btn {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
    position: fixed;
    bottom: 22px; left: 18px;
    width: 46px; height: 46px;
    border-radius: 50%;
    background: var(--color-accent);
    border: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    cursor: pointer;
    z-index: 150;
  }
  .sidebar-toggle-btn span {
    display: block;
    width: 20px; height: 2px;
    background: #fff;
    border-radius: 1px;
  }
  .sidebar-overlay {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
    z-index: 200;
  }
  .sidebar-overlay.is-open { opacity: 1; pointer-events: auto; }
}

/* ===========================
   レスポンシブ
   =========================== */
@media (max-width: 640px) {
  .site-nav {
    gap: 16px;
  }

  .admin-layout {
    grid-template-columns: 1fr;
  }

  .admin-sidebar {
    display: none;
  }

  .admin-main {
    padding: 24px 16px;
  }

  .posts-grid {
    gap: 16px;
  }

  .post-card__body {
    padding: 16px;
  }
}

/* アクセシビリティ */
@media (prefers-reduced-motion: reduce) {
  .post-card {
    transition: none;
  }
}