/*
Theme Name: Sango Like
Theme URI: https://example.com/sango-like
Author: Your Name
Author URI: https://example.com
Description: Sango風のデザインを持つPHP 8.3対応WordPressテーマ。カード型レイアウトとモダンなUIを特徴とします。
Version: 1.0.4
Requires at least: 6.4
Tested up to: 6.7
Requires PHP: 8.3
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: sango-like
Tags: blog, two-columns, right-sidebar, custom-colors, custom-menu, custom-logo, featured-images, footer-widgets, full-width-template, post-formats, rtl-language-support, sticky-post, threaded-comments, translation-ready
*/

/* ===== CSS Variables ===== */
:root {
  --color-primary: #ff6b35;
  --color-primary-light: #ff8c5f;
  --color-primary-dark: #e5531a;
  --color-secondary: #26c6da;
  --color-secondary-light: #4dd0e1;
  --color-secondary-dark: #00acc1;
  --color-accent: #ffca28;
  --color-success: #66bb6a;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-text-muted: #999999;
  --color-bg: #f4f6f8;
  --color-bg-white: #ffffff;
  --color-border: #e8ecef;
  --color-card-shadow: rgba(0, 0, 0, 0.08);
  --color-card-shadow-hover: rgba(0, 0, 0, 0.16);
  --font-sans: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --line-height-base: 1.8;
  --line-height-heading: 1.4;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --shadow-sm: 0 2px 8px var(--color-card-shadow);
  --shadow-md: 0 4px 16px var(--color-card-shadow);
  --shadow-lg: 0 8px 24px var(--color-card-shadow);
  --shadow-hover: 0 8px 28px var(--color-card-shadow-hover);
  --transition-base: 0.25s ease;
  --sidebar-width: 320px;
  --content-max-width: 1200px;
  --header-height: 64px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}
a:hover { color: var(--color-primary-dark); }

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

ul, ol { list-style: none; }

/* ===== Skip Link ===== */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 8px 16px;
  z-index: 9999;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { top: 0; }

/* ===== Layout ===== */
.container {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.site-main {
  padding-top: calc(var(--header-height) + 24px);
  padding-bottom: 48px;
  min-height: calc(100vh - var(--header-height));
}
body.admin-bar .site-main {
  padding-top: calc(var(--header-height) + 32px + 24px);
}
@media screen and (max-width: 782px) {
  body.admin-bar .site-main {
    padding-top: calc(var(--header-height) + 46px + 24px);
  }
}

.content-area {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: 32px;
  align-items: start;
}

.main-content {
  min-width: 0;
}

/* ===== Header ===== */
#masthead {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: var(--color-bg-white);
  border-bottom: 3px solid var(--color-primary);
  z-index: 1000;
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

/* WordPress admin bar (32px desktop / 46px mobile) */
body.admin-bar #masthead {
  top: 32px;
}
@media screen and (max-width: 782px) {
  body.admin-bar #masthead {
    top: 46px;
  }
}

#masthead.scrolled {
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

/* 左：サイトロゴ */
.site-branding {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.site-branding .custom-logo-link img,
.site-branding .custom-logo {
  height: 40px;
  width: auto;
  display: block;
}
.site-title-link {
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-text);
  white-space: nowrap;
  text-decoration: none;
}
.site-title-link:hover { color: var(--color-primary); }

/* 右：メニュータブ */
.header-nav-tabs {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: nowrap;
  margin-left: auto;
}

.header-nav-tab {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text);
  background: transparent;
  transition: background var(--transition-base), color var(--transition-base);
  white-space: nowrap;
}
.header-nav-tab:hover {
  background: var(--color-bg);
  color: var(--color-primary);
}
.header-nav-tab.is-active {
  background: var(--color-primary);
  color: #fff;
}

/* ロゴ画像 */
.site-logo-link {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}
.site-logo-img {
  height: 48px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  display: block;
}
/* WP カスタムロゴも同サイズに揃える */
.site-branding .custom-logo-link {
  display: inline-flex;
  align-items: center;
}
.site-branding .custom-logo {
  height: 48px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  display: block;
}

/* Hamburger */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition-base);
}
.menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero / Slider ===== */
.hero-section {
  /* 画像なし時のデフォルト背景 */
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 40%, var(--color-secondary) 100%);
  margin-top: var(--header-height);
  min-height: 360px;
  position: relative;
  display: block;
  padding: 0;
}

/* 画像のみモード：テキスト類を非表示 */
.hero-section--image-only {
  /* テキストなし・オーバーレイなし */
}

/* ===== Front Page Menu Tabs ===== */
.front-menu-tabs {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--color-border);
}
.front-menu-tab {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-light);
  background: var(--color-bg-white);
  border: 2px solid var(--color-border);
  transition: all var(--transition-base);
  white-space: nowrap;
}
.front-menu-tab:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}
.front-menu-tab.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}

/* ===== Icon SVG global size guard ===== */
.breadcrumbs svg,
.meta-item svg,
.widget-title svg,
.toc-title svg,
.related-posts-title svg,
.share-btn svg,
#back-to-top svg {
  display: inline-block;
  max-width: 24px;
  max-height: 24px;
  flex-shrink: 0;
}

/* ===== Breadcrumbs ===== */
.breadcrumbs {
  padding: 12px 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 2px;
}
.breadcrumbs a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--color-text-muted);
}
.breadcrumbs a:hover { color: var(--color-primary); }
.breadcrumbs .separator { margin: 0 4px; }

/* ===== Post Cards ===== */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.post-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  display: flex;
  flex-direction: column;
}
.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.post-card-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-bg);
}
.post-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.post-card:hover .post-card-thumb img {
  transform: scale(1.05);
}
.post-card-no-thumb {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-secondary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: 3rem;
}

.post-card-category {
  position: absolute;
  top: 12px;
  left: 12px;
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.category-badge {
  background: var(--color-primary);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  line-height: 1.5;
  transition: filter 0.2s;
}
.category-badge:hover { filter: brightness(0.85); color: #fff; }

/* ===== カテゴリー別カラー ===== */
.category-badge.cat-3d          { background: #00BCD4; }  /* シアン        - 3D */
.category-badge.cat-3dprinter   { background: #009688; }  /* ティール       - 3Dプリンター */
.category-badge.cat-app         { background: #2196F3; }  /* ブルー         - アプリ */
.category-badge.cat-blender     { background: #FF9800; }  /* オレンジ       - Blender */
.category-badge.cat-camera      { background: #546E7A; }  /* ブルーグレー   - カメラ */
.category-badge.cat-car         { background: #E53935; }  /* レッド         - 車 */
.category-badge.cat-card        { background: #8E24AA; }  /* パープル       - カード */
.category-badge.cat-cluster     { background: #3949AB; }  /* インディゴ     - クラスター */
.category-badge.cat-diy         { background: #6D4C41; }  /* ブラウン       - DIY */
.category-badge.cat-game        { background: #43A047; }  /* グリーン       - ゲーム */
.category-badge.cat-health      { background: #EC407A; }  /* ピンク         - 健康 */
.category-badge.cat-hobby       { background: #FB8C00; }  /* アンバー       - 趣味 */
.category-badge.cat-home        { background: #66BB6A; }  /* ライトグリーン - 家 */
.category-badge.cat-ipad        { background: #78909C; }  /* グレー         - iPad */
.category-badge.cat-lifestyle   { background: #AB47BC; }  /* ライトパープル - ライフスタイル */
.category-badge.cat-mac         { background: #455A64; }  /* ダークグレー   - Mac */
.category-badge.cat-outdoor     { background: #7CB342; }  /* オリーブグリーン - アウトドア */
.category-badge.cat-pc          { background: #1565C0; }  /* ダークブルー   - PC */
.category-badge.cat-programming { background: #FF5722; }  /* ディープオレンジ - プログラミング */
.category-badge.cat-rc          { background: #F4511E; }  /* オレンジレッド  - RC */
.category-badge.cat-unity       { background: #5E35B1; }  /* ディープパープル - Unity */
.category-badge.cat-gadget      { background: #1E88E5; }  /* ブライトブルー  - ガジェット */

.post-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.post-card-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  line-height: var(--line-height-heading);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card-title a {
  color: var(--color-text);
}
.post-card-title a:hover { color: var(--color-primary); }

.post-card-excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.7;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}

.post-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  padding-top: 14px;
  margin-top: auto;
}
.post-card-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 4px;
}
.post-card-meta svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

/* ===== Pagination ===== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin-top: 48px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.pagination .page-numbers {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  font-size: var(--font-size-sm);
  font-weight: 600;
  background: var(--color-bg-white);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  text-decoration: none;
  border: 2px solid transparent;
}
.pagination .page-numbers:hover {
  background: var(--color-bg-white);
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}
.pagination .page-numbers.current {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.35);
}
.pagination .page-numbers.dots {
  background: transparent;
  box-shadow: none;
  border-color: transparent;
  color: var(--color-text-light);
  pointer-events: none;
}
.pagination .prev,
.pagination .next {
  width: 44px;
  height: 44px;
  padding: 0;
  font-size: 1.25rem;
}

/* ===== Single Post ===== */
.single-article {
  /* カードなし・本文そのまま流し込み */
}

/* タイトルエリア */
.single-title-area {
  margin-bottom: 20px;
}
.single-title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  line-height: 1.35;
  color: var(--color-text);
  margin-bottom: 14px;
}
.single-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  flex-wrap: wrap;
}
.single-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 5px;
}

/* アイキャッチ画像 + SHAREオーバーレイ */
.single-eyecatch {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 32px;
  background: var(--color-bg);
}
.single-eyecatch img {
  width: 100%;
  height: auto;
  display: block;
  max-height: 520px;
  object-fit: cover;
}

/* SHAREボタン（画像右下に重ねる） */
.eyecatch-share-btn {
  position: absolute;
  bottom: 16px;
  right: 16px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  color: var(--color-text);
  border: none;
  border-radius: var(--radius-full);
  padding: 10px 20px;
  font-size: var(--font-size-sm);
  font-weight: 700;
  font-family: var(--font-sans);
  letter-spacing: 0.05em;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0,0,0,0.18);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  z-index: 2;
}
.eyecatch-share-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.24);
}

/* SHAREポップアップ */
.eyecatch-share-popup {
  position: absolute;
  bottom: 62px;
  right: 16px;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  display: flex;
  gap: 6px;
  z-index: 3;
  animation: fadeInUp 0.18s ease;
}
.eyecatch-share-popup[hidden] { display: none; }
.share-popup-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: #fff;
  white-space: nowrap;
  transition: opacity var(--transition-base);
}
.share-popup-item:hover { opacity: 0.85; color: #fff; }
.share-popup-item.twitter  { background: #000; }
.share-popup-item.facebook { background: #1877f2; }
.share-popup-item.hatena   { background: #00a4de; }
.share-popup-item.line     { background: #06c755; }

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* タグ */
.post-tags {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 24px 0;
  padding: 16px 20px;
  background: var(--color-bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.post-tags-label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-muted);
  white-space: nowrap;
}
.post-tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.post-tag-item {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-text-light);
  transition: all var(--transition-base);
}
.post-tag-item:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* 前後記事ナビ */
.post-navigation {
  margin: 32px 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.post-nav-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.post-nav-prev {
  text-align: right;
}
.post-nav-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
}
.post-nav-card {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: 12px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
  text-decoration: none;
  min-height: 80px;
}
.post-nav-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.post-nav-thumb {
  width: 88px;
  height: 66px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.post-nav-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.post-nav-title {
  flex: 1;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
}
.post-nav-card:hover .post-nav-title { color: var(--color-primary); }

/* ===== Table of Contents ===== */
.toc-box {
  background: linear-gradient(135deg, #fff9f0, #fff);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin: 32px 0;
}
.toc-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.toc-title::before {
  content: '';
  display: block;
  width: 18px;
  height: 18px;
  background: var(--color-accent);
  border-radius: 4px;
  flex-shrink: 0;
}
.toc-list {
  list-style: none;
  counter-reset: toc-counter;
}
.toc-list > li {
  counter-increment: toc-counter;
  margin-bottom: 8px;
}
.toc-list > li > a::before {
  content: counter(toc-counter) ". ";
  color: var(--color-primary);
  font-weight: 700;
  margin-right: 4px;
}
.toc-list a {
  color: var(--color-text);
  font-size: var(--font-size-sm);
  font-weight: 600;
  line-height: 1.6;
}
.toc-list a:hover { color: var(--color-primary); }
.toc-list .toc-sub {
  margin-top: 6px;
  margin-left: 20px;
  list-style: disc;
  color: var(--color-text-light);
}
.toc-list .toc-sub li { margin-bottom: 4px; }
.toc-list .toc-sub a {
  font-weight: 400;
  color: var(--color-text-light);
}

/* ===== Post Content ===== */
.entry-content {
  font-size: 1rem;
  line-height: var(--line-height-base);
  margin-bottom: 8px;
}

/* page.php などカード内 .entry-content はボックス表示 */
.page-content.entry-content {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}

.entry-content h2 {
  font-size: var(--font-size-2xl);
  font-weight: 800;
  color: var(--color-text);
  margin: 48px 0 20px;
  padding: 14px 20px 14px 20px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  border-radius: var(--radius-md);
  line-height: var(--line-height-heading);
  position: relative;
  overflow: hidden;
}
.entry-content h2::before {
  content: '';
  position: absolute;
  top: -20px;
  right: -20px;
  width: 100px;
  height: 100px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
}

.entry-content h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  margin: 36px 0 16px;
  padding: 10px 16px;
  border-left: 5px solid var(--color-primary);
  border-bottom: 1px solid var(--color-border);
  background: #fff9f7;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.entry-content h4 {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  margin: 28px 0 12px;
  padding-left: 12px;
  border-left: 3px solid var(--color-secondary);
}

.entry-content h5, .entry-content h6 {
  font-size: 1rem;
  font-weight: 700;
  margin: 20px 0 10px;
  color: var(--color-text);
}

.entry-content p { margin-bottom: 20px; }

.entry-content a {
  color: var(--color-primary);
  border-bottom: 1px solid rgba(255, 107, 53, 0.3);
  padding-bottom: 1px;
}
.entry-content a:hover {
  border-bottom-color: var(--color-primary);
}

.entry-content ul, .entry-content ol {
  margin: 16px 0 20px 0;
  padding-left: 0;
}
.entry-content ul { list-style: none; }
.entry-content ul > li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 8px;
}
.entry-content ul > li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 10px;
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
}
.entry-content ol {
  list-style: decimal;
  padding-left: 24px;
}
.entry-content ol > li { margin-bottom: 8px; }

.entry-content blockquote {
  border-left: 4px solid var(--color-secondary);
  background: linear-gradient(135deg, #f0fbfc, #fff);
  padding: 20px 24px;
  margin: 24px 0;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--color-text-light);
}
.entry-content blockquote cite {
  display: block;
  margin-top: 8px;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  font-style: normal;
}

.entry-content pre {
  background: #1e293b;
  color: #e2e8f0;
  padding: 24px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-size: 0.875rem;
  line-height: 1.7;
  margin: 24px 0;
}
.entry-content code {
  font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
  font-size: 0.875em;
  background: #fff0ec;
  color: var(--color-primary-dark);
  padding: 2px 6px;
  border-radius: 4px;
}
.entry-content pre code {
  background: none;
  color: inherit;
  padding: 0;
  font-size: inherit;
}

.entry-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: var(--font-size-sm);
}
.entry-content th {
  background: var(--color-primary);
  color: #fff;
  padding: 12px 16px;
  text-align: left;
  font-weight: 700;
}
.entry-content td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--color-border);
}
.entry-content tr:nth-child(even) td { background: #fafafa; }
.entry-content tr:hover td { background: #fff9f7; }

.entry-content img {
  border-radius: var(--radius-md);
  margin: 16px auto;
  box-shadow: var(--shadow-sm);
}

.entry-content hr {
  border: none;
  height: 2px;
  background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
  border-radius: 2px;
  margin: 40px 0;
}

/* Callout Boxes */
.callout-box {
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 24px 0;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}
.callout-box.info {
  background: #e3f2fd;
  border-left: 4px solid #2196f3;
}
.callout-box.warning {
  background: #fff8e1;
  border-left: 4px solid var(--color-accent);
}
.callout-box.success {
  background: #e8f5e9;
  border-left: 4px solid var(--color-success);
}
.callout-box.danger {
  background: #fce4ec;
  border-left: 4px solid #e91e63;
}

/* ===== Share Buttons ===== */
.share-section {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin: 24px 0;
  box-shadow: var(--shadow-sm);
  text-align: center;
}
.share-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
}
.share-buttons {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: #fff;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.share-btn:hover {
  transform: translateY(-2px);
  color: #fff;
}
.share-btn.twitter { background: #1da1f2; }
.share-btn.twitter:hover { box-shadow: 0 4px 16px rgba(29,161,242,0.4); }
.share-btn.facebook { background: #1877f2; }
.share-btn.facebook:hover { box-shadow: 0 4px 16px rgba(24,119,242,0.4); }
.share-btn.hatena { background: #00a4de; }
.share-btn.hatena:hover { box-shadow: 0 4px 16px rgba(0,164,222,0.4); }
.share-btn.line { background: #06c755; }
.share-btn.line:hover { box-shadow: 0 4px 16px rgba(6,199,85,0.4); }
.share-btn svg { width: 18px; height: 18px; }

/* ===== Author Box ===== */
.author-box {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin: 24px 0;
  box-shadow: var(--shadow-sm);
  display: flex;
  gap: 20px;
  align-items: flex-start;
  border: 2px solid var(--color-border);
}
.author-avatar img {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--color-primary);
  flex-shrink: 0;
}
.author-avatar-placeholder {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 2rem;
  font-weight: 700;
  flex-shrink: 0;
}
.author-info .author-name {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}
.author-info .author-bio {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===== Related Posts ===== */
.related-posts {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin: 24px 0;
  box-shadow: var(--shadow-sm);
}
.related-posts-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}
.related-posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.related-post-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.related-post-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}
.related-post-thumb {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--color-bg);
}
.related-post-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.related-post-card:hover .related-post-thumb img {
  transform: scale(1.06);
}
.related-post-body {
  padding: 12px;
  background: var(--color-bg-white);
}
.related-post-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-post-title a { color: inherit; }
.related-post-title a:hover { color: var(--color-primary); }

/* ===== Comments ===== */
#comments {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin: 24px 0;
  box-shadow: var(--shadow-sm);
}
.comments-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
}
.comment-list { list-style: none; }
.comment {
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}
.comment-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.comment-author img {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
}
.comment-author .fn {
  font-weight: 700;
  color: var(--color-text);
}
.comment-metadata {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}
.comment-body p { font-size: var(--font-size-sm); color: var(--color-text-light); line-height: 1.7; }
.reply a {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  font-weight: 600;
}

/* Comment Form */
.comment-respond {
  margin-top: 32px;
}
.comment-reply-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  margin-bottom: 20px;
}
.comment-form label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}
.comment-form input[type="text"],
.comment-form input[type="email"],
.comment-form input[type="url"],
.comment-form textarea {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  outline: none;
  transition: border-color var(--transition-base);
  margin-bottom: 16px;
}
.comment-form input:focus,
.comment-form textarea:focus {
  border-color: var(--color-primary);
  background: #fff;
}
.comment-form textarea { min-height: 150px; resize: vertical; }
.comment-form .submit {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  border: none;
  padding: 12px 32px;
  border-radius: var(--radius-full);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all var(--transition-base);
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3);
}
.comment-form .submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

/* ===== Sidebar ===== */
.sidebar {
  position: sticky;
  top: calc(var(--header-height) + 20px);
}
.widget {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}
.widget-title,
.widget .wp-block-heading {
  font-size: var(--font-size-2xl) !important;
  font-weight: 700 !important;
  color: var(--color-text) !important;
  margin-top: 0 !important;
  margin-bottom: 16px !important;
  padding-bottom: 12px !important;
  border-bottom: 3px solid var(--color-primary) !important;
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
  line-height: 1.4 !important;
}

/* 全サイドバーウィジェットのタイトルをメタ情報と同じデザインに統一 */
#secondary .widget h2,
#secondary .widget h3,
#secondary .widget-title,
#secondary .wp-block-heading {
  font-size: var(--font-size-2xl) !important;
  font-weight: 700 !important;
  color: var(--color-text) !important;
  background: transparent !important;
  border-top: none !important;
  border-left: none !important;
  border-right: none !important;
  border-bottom: 3px solid var(--color-primary) !important;
  padding: 0 0 12px 0 !important;
  margin-top: 0 !important;
  margin-bottom: 16px !important;
  line-height: 1.4 !important;
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
}
.widget ul {
  list-style: none;
}
.widget ul li {
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: var(--font-size-sm);
}
.widget ul li:last-child { border-bottom: none; }
.widget ul li a {
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 6px;
}
.widget ul li a:hover { color: var(--color-primary); }
.widget ul li a::before {
  content: '›';
  color: var(--color-primary);
  font-weight: 700;
}

/* Recent Posts Widget */
.widget-recent-posts .recent-post-item {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}
.widget-recent-posts .recent-post-item:last-child { border-bottom: none; }
.widget-recent-posts .recent-thumb {
  width: 72px;
  height: 54px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
  background: var(--color-bg);
}
.widget-recent-posts .recent-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.widget-recent-posts .recent-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.widget-recent-posts .recent-title a { color: inherit; }
.widget-recent-posts .recent-title a:hover { color: var(--color-primary); }
.widget-recent-posts .recent-date {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-top: 4px;
}

/* Tag Cloud */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag-cloud a {
  display: inline-block;
  padding: 5px 12px;
  border-radius: var(--radius-full);
  background: var(--color-bg);
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}
.tag-cloud a:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

/* Search Widget */
.widget_search { padding: 14px 20px; }
.widget-search {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  gap: 6px;
  align-items: center;
}
.widget-search label {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  padding: 0;
  line-height: 1;
}
.widget-search .search-field {
  display: block;
  width: 100% !important;
  height: 18px !important;
  min-height: 0 !important;
  max-height: 18px !important;
  padding: 0 10px !important;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-family: var(--font-sans);
  outline: none;
  transition: border-color var(--transition-base);
  box-sizing: border-box !important;
  -webkit-appearance: none !important;
  appearance: none;
  line-height: 1 !important;
  vertical-align: middle;
}
.widget-search .search-field:focus { border-color: var(--color-primary); }
.widget-search .search-submit {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 18px !important;
  min-height: 0 !important;
  background: var(--color-primary);
  color: #fff;
  border: none;
  padding: 0 14px !important;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 700;
  cursor: pointer;
  font-family: var(--font-sans);
  white-space: nowrap !important;
  line-height: 1 !important;
  box-sizing: border-box;
  transition: background var(--transition-base);
}
.widget-search .search-submit:hover { background: var(--color-primary-dark); }

/* アーカイブ・カテゴリー共通: セレクトボックス */
.widget .select-wrap select,
.widget select.postform,
.widget_archives .select-wrap select,
.widget_categories .select-wrap select,
.widget_archive select,
.wp-block-archives-dropdown select {
  display: block !important;
  width: 100% !important;
  padding: 12px 16px !important;
  background-color: #f0f2f5 !important;
  border: 1px solid #e4e6eb !important;
  border-radius: 12px !important;
  font-size: 16px !important;
  font-family: var(--font-sans) !important;
  color: #1c1e21 !important;
  appearance: none !important;
  -webkit-appearance: none !important;
  cursor: pointer !important;
  outline: none !important;
  box-sizing: border-box !important;
}
.widget .select-wrap select:focus,
.widget select.postform:focus,
.widget_archive select:focus,
.wp-block-archives-dropdown select:focus {
  border-color: var(--color-primary) !important;
  outline: none !important;
}

/* 矢印アイコン共通ラッパー */
.widget .select-wrap {
  position: relative;
  display: block;
}
.widget .select-wrap::after {
  content: '';
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 0;
  height: 0;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 7px solid var(--color-text-light);
  pointer-events: none;
}

/* Gutenberg Block Search Widget */
.wp-block-search {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
}
.wp-block-search__label {
  display: none !important;
}
.wp-block-search__inside-wrapper {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  width: 100%;
}
.wp-block-search__input {
  margin-bottom: 0 !important;
  padding: 8px 10px !important;
  height: 40px !important;
  box-sizing: border-box !important;
  -webkit-appearance: none !important;
  appearance: none;
}
.wp-block-search__button {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  margin-left: 5px !important;
  padding: 0 15px !important;
  height: 40px !important;
  line-height: 1 !important;
  white-space: nowrap;
  box-sizing: border-box !important;
}

/* Profile Widget */
.widget-profile {
  text-align: center;
}
.widget-profile .profile-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  margin: 0 auto 16px;
  border: 4px solid var(--color-primary);
  overflow: hidden;
}
.widget-profile .profile-avatar img { width: 100%; height: 100%; object-fit: cover; }
.widget-profile .profile-name {
  font-size: var(--font-size-lg);
  font-weight: 700;
  margin-bottom: 8px;
}
.widget-profile .profile-bio {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===== Footer ===== */
#colophon {
  background: #1e293b;
  color: #94a3b8;
  padding-top: 0;
}
.footer-widgets {
  padding: 48px 0;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-widgets-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.footer-widget-title {
  font-size: 1rem;
  font-weight: 700;
  color: #e2e8f0;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-primary);
  display: inline-block;
}
.footer-widget ul li {
  padding: 6px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  font-size: var(--font-size-sm);
}
.footer-widget ul li:last-child { border-bottom: none; }
.footer-widget ul li a {
  color: #94a3b8;
}
.footer-widget ul li a:hover { color: var(--color-primary); }

.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-copy {
  font-size: var(--font-size-sm);
}
.footer-nav ul {
  display: flex;
  gap: 20px;
}
.footer-nav a {
  font-size: var(--font-size-sm);
  color: #94a3b8;
}
.footer-nav a:hover { color: var(--color-primary); }

/* ===== Back to Top ===== */
#back-to-top {
  position: fixed;
  bottom: 72px;
  right: 28px;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(255, 107, 53, 0.4);
  opacity: 0;
  transform: translateY(16px);
  transition: all var(--transition-base);
  z-index: 999;
}
#back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
}
#back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.5);
}

/* ===== Page / Archive ===== */
.page-header {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  padding: 48px 0;
  margin-top: var(--header-height);
  margin-bottom: 32px;
  text-align: center;
}
.page-header .page-title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  margin-bottom: 10px;
}
.page-header .archive-description {
  opacity: 0.85;
  font-size: var(--font-size-lg);
}

/* Static Page */
.page-content {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}

/* ===== 404 Page ===== */
.error-404 {
  text-align: center;
  padding: 80px 20px;
}
.error-404 .error-code {
  font-size: 8rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 16px;
}
.error-404 .error-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: 12px;
}
.error-404 .error-description {
  color: var(--color-text-light);
  margin-bottom: 32px;
  font-size: var(--font-size-lg);
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  padding: 14px 32px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: var(--font-size-lg);
  box-shadow: 0 4px 16px rgba(255, 107, 53, 0.35);
  transition: all var(--transition-base);
}
.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(255, 107, 53, 0.45);
  color: #fff;
}

/* ===== Search Results ===== */
.search-header {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}
.search-header .search-title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-text);
}
.search-header .search-count {
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin-top: 6px;
}

/* ===== Utilities ===== */
.screen-reader-text {
  border: 0;
  clip: rect(1px, 1px, 1px, 1px);
  clip-path: inset(50%);
  height: 1px;
  margin: -1px;
  overflow: hidden;
  padding: 0;
  position: absolute;
  width: 1px;
  word-wrap: normal !important;
}
.aligncenter { text-align: center; margin-left: auto; margin-right: auto; }
.alignleft { float: left; margin: 8px 20px 8px 0; }
.alignright { float: right; margin: 8px 0 8px 20px; }
.wp-block-image.aligncenter { margin-left: auto; margin-right: auto; }

/* ===== Mobile Navigation ===== */
.mobile-nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 1001;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}
.mobile-nav-overlay.active { opacity: 1; visibility: visible; }
.mobile-nav-panel {
  position: fixed;
  top: 0;
  right: -100%;
  width: min(320px, 90vw);
  height: 100%;
  background: var(--color-bg-white);
  z-index: 1002;
  overflow-y: auto;
  transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 24px;
  box-shadow: var(--shadow-lg);
}
.mobile-nav-panel.active { right: 0; }
.mobile-nav-close {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 24px;
}
.mobile-nav-close button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
  font-size: 1.5rem;
  padding: 4px;
  line-height: 1;
}
.mobile-nav-menu li {
  border-bottom: 1px solid var(--color-border);
}
.mobile-nav-menu a {
  display: block;
  padding: 14px 8px;
  color: var(--color-text);
  font-weight: 600;
}
.mobile-nav-menu a:hover { color: var(--color-primary); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  :root { --sidebar-width: 280px; }
  .related-posts-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-widgets-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --content-max-width: 100%; }
  .content-area { grid-template-columns: 1fr; }
  .sidebar { position: static; }
  .posts-grid { grid-template-columns: 1fr; }
  .header-nav, .header-search-form { display: none; }
  .menu-toggle { display: flex; }
  .single-title { font-size: var(--font-size-2xl); }
  .entry-content { padding: 24px 20px; }
  .entry-content h2 { font-size: var(--font-size-xl); }
  .related-posts-grid { grid-template-columns: 1fr; }
  .footer-widgets-grid { grid-template-columns: 1fr; }
  .author-box { flex-direction: column; align-items: center; text-align: center; }
  .share-buttons { gap: 8px; }
  .share-btn { padding: 9px 14px; font-size: 12px; }
  .hero-section h1 { font-size: 1.75rem; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .post-card-body { padding: 16px; }
  .widget { padding: 18px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .error-404 .error-code { font-size: 5rem; }
}