/*
Theme Name: EikaiwaHub
Theme URI: https://eikaiwa-hub.com
Description: オンライン英会話スクール比較特化テーマ。英会話スクール・オンラインレッスン紹介に最適化。
Author: 英会話ハブ編集部
Version: 1.0.0
Text Domain: eikaiwa-hub
*/

/* =============================================
   CSS Variables
============================================= */
:root {
  --color-primary: #1a6fc4;       /* ロイヤルブルー */
  --color-primary-dark: #145299;
  --color-primary-light: #e8f1fb;
  --color-secondary: #f0f7ff;
  --color-bg: #f8fafd;
  --color-bg-card: #ffffff;
  --color-bg-dark: #0d2240;
  --color-text: #1a202c;
  --color-text-light: #64748b;
  --color-text-white: #f0f7ff;
  --color-border: #dde8f5;
  --color-accent: #e85d04;       /* オレンジ（CTA） */
  --color-accent2: #c44d00;
  --color-success: #16a34a;
  --color-gold: #d97706;         /* 星・バッジ */
  --font-main: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', Meiryo, sans-serif;
  --radius: 8px;
  --radius-lg: 14px;
  --shadow: 0 2px 10px rgba(26,111,196,0.08);
  --shadow-md: 0 4px 20px rgba(26,111,196,0.13);
}

/* =============================================
   Reset & Base
============================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--color-primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--color-accent); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { padding-left: 1.5em; }

/* =============================================
   Layout
============================================= */
.site-wrapper { display: flex; flex-direction: column; min-height: 100vh; }

.content-area {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 40px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 40px 20px;
  width: 100%;
}

/* =============================================
   Header
============================================= */
.site-header {
  background: var(--color-bg-dark);
  border-bottom: 3px solid var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 12px rgba(0,0,0,0.2);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.site-logo {
  font-size: 1.3rem;
  font-weight: 900;
  color: #fff;
  letter-spacing: .03em;
  display: flex;
  align-items: center;
  gap: 8px;
}
.site-logo span { color: var(--color-accent); }
.site-logo:hover { color: #fff; }

.site-nav { display: flex; gap: 24px; align-items: center; }
.site-nav a {
  font-size: .85rem;
  font-weight: 700;
  color: rgba(255,255,255,.8);
  padding: 4px 2px;
  border-bottom: 2px solid transparent;
  transition: all .2s;
}
.site-nav a:hover { color: #fff; border-bottom-color: var(--color-primary); }

/* =============================================
   Hero
============================================= */
.hero {
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, #0e3a7c 60%, var(--color-primary) 100%);
  padding: 72px 20px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(26,111,196,.25) 0%, transparent 70%);
}

.hero-inner { position: relative; max-width: 780px; margin: 0 auto; }

.hero-badge {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: .7rem;
  font-weight: 800;
  letter-spacing: .1em;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 18px;
  text-transform: uppercase;
}

.hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.5rem);
  font-weight: 900;
  line-height: 1.4;
  margin-bottom: 16px;
  text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.hero p {
  font-size: 1rem;
  color: rgba(240,247,255,.85);
  margin-bottom: 32px;
  line-height: 1.9;
}

.hero-cta-wrap { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.hero-cta-main {
  background: var(--color-accent);
  color: #fff;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 800;
  font-size: 1rem;
  box-shadow: 0 4px 16px rgba(232,93,4,.5);
  transition: transform .2s, box-shadow .2s;
}
.hero-cta-main:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(232,93,4,.6);
  color: #fff;
}

.hero-cta-sub {
  background: rgba(255,255,255,.15);
  color: #fff;
  padding: 14px 28px;
  border-radius: 50px;
  font-weight: 700;
  font-size: .95rem;
  border: 2px solid rgba(255,255,255,.4);
  backdrop-filter: blur(4px);
  transition: background .2s;
}
.hero-cta-sub:hover { background: rgba(255,255,255,.25); color: #fff; }

/* ヒーロー統計バー */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-top: 36px;
  flex-wrap: wrap;
}
.hero-stat { text-align: center; }
.hero-stat-num {
  font-size: 1.8rem;
  font-weight: 900;
  color: #fff;
  display: block;
}
.hero-stat-label {
  font-size: .72rem;
  color: rgba(240,247,255,.7);
  letter-spacing: .05em;
}

/* =============================================
   記事カード
============================================= */
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 24px;
}

.post-card {
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform .2s, box-shadow .2s;
  border: 1px solid var(--color-border);
}
.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }

.post-card-thumb {
  height: 180px;
  background: var(--color-secondary);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
}
.post-card-thumb img { width: 100%; height: 100%; object-fit: cover; }

.post-card-body { padding: 18px; }
.post-card-body h3 { font-size: .95rem; font-weight: 700; line-height: 1.5; margin-bottom: 8px; }
.post-card-body h3 a { color: var(--color-text); }
.post-card-body h3 a:hover { color: var(--color-primary); }
.post-card-meta { font-size: .75rem; color: var(--color-text-light); display: flex; gap: 10px; flex-wrap: wrap; }

.cat-badge {
  background: var(--color-primary);
  color: #fff;
  font-size: .65rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 20px;
}

/* =============================================
   記事ヘッダー
============================================= */
.article-header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--color-border);
}
.article-cats { margin-bottom: 10px; display: flex; gap: 8px; flex-wrap: wrap; }
.article-title {
  font-size: clamp(1.3rem, 3vw, 1.9rem);
  font-weight: 900;
  line-height: 1.45;
  color: var(--color-text);
  margin-bottom: 12px;
}
.article-meta { font-size: .78rem; color: var(--color-text-light); display: flex; gap: 16px; flex-wrap: wrap; }

/* =============================================
   記事本文
============================================= */
.article-body { font-size: 1rem; line-height: 1.9; color: var(--color-text); }

.article-body h2 {
  font-size: 1.3rem;
  font-weight: 900;
  margin: 48px 0 20px;
  padding: 14px 20px 14px 52px;
  background: linear-gradient(to right, var(--color-bg-dark), #1a3a6e);
  color: #fff;
  border-radius: var(--radius);
  position: relative;
}
.article-body h2::before {
  content: '📖';
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.1rem;
}

.article-body h3 {
  font-size: 1.1rem;
  font-weight: 800;
  margin: 36px 0 14px;
  padding: 10px 16px;
  border-left: 4px solid var(--color-primary);
  background: var(--color-primary-light);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--color-bg-dark);
}

.article-body h4 { font-size: 1rem; font-weight: 700; margin: 24px 0 10px; color: var(--color-primary-dark); }
.article-body p { margin-bottom: 1.4em; }
.article-body ul, .article-body ol { margin-bottom: 1.4em; padding-left: 1.8em; }
.article-body li { margin-bottom: .5em; }
.article-body strong { color: var(--color-primary-dark); font-weight: 800; }

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.6em;
  font-size: .9rem;
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  overflow: hidden;
}
.article-body th {
  background: var(--color-bg-dark);
  color: #fff;
  padding: 12px 14px;
  font-weight: 700;
  text-align: left;
}
.article-body td { padding: 10px 14px; border-bottom: 1px solid var(--color-border); vertical-align: top; }
.article-body tr:nth-child(even) td { background: var(--color-secondary); }

/* =============================================
   英会話スクール比較カード
============================================= */
.school-card {
  background: #fff;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin-bottom: 28px;
  transition: border-color .2s, box-shadow .2s;
  position: relative;
}
.school-card:hover { border-color: var(--color-primary); box-shadow: var(--shadow-md); }
.school-card.recommended { border-color: var(--color-accent); }

.school-card-badge {
  position: absolute;
  top: -12px;
  left: 20px;
  background: var(--color-accent);
  color: #fff;
  font-size: .7rem;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: 20px;
  letter-spacing: .05em;
}

.school-card-header { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }

.school-card-logo {
  width: 90px;
  height: 60px;
  background: var(--color-secondary);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: .78rem;
  color: var(--color-primary-dark);
  flex-shrink: 0;
  border: 1px solid var(--color-border);
  text-align: center;
  line-height: 1.3;
}

.school-card-title { font-size: 1.15rem; font-weight: 900; color: var(--color-text); }
.school-card-sub { font-size: .78rem; color: var(--color-text-light); margin-top: 2px; }

/* 星評価 */
.school-rating {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 4px 0;
}
.school-stars { color: var(--color-gold); font-size: 1rem; letter-spacing: 1px; }
.school-rating-num { font-size: .85rem; font-weight: 800; color: var(--color-gold); }

.school-card-specs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin: 16px 0;
  background: var(--color-secondary);
  border-radius: var(--radius);
  padding: 14px;
}
.school-spec-item { text-align: center; }
.school-spec-label {
  font-size: .62rem;
  color: var(--color-text-light);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  display: block;
  margin-bottom: 3px;
}
.school-spec-value { font-size: .92rem; font-weight: 900; color: var(--color-text); }
.school-spec-value.highlight { color: var(--color-accent); }

.school-card-features {
  list-style: none;
  padding: 0;
  margin: 12px 0 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.school-card-features li {
  font-size: .75rem;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  padding: 4px 10px;
  border-radius: 20px;
  font-weight: 600;
}
.school-card-features li::before { content: '✓ '; color: var(--color-primary); }

.school-cta-btn {
  display: block;
  width: 100%;
  text-align: center;
  background: var(--color-accent);
  color: #fff !important;
  padding: 14px 20px;
  border-radius: 50px;
  font-weight: 800;
  font-size: .95rem;
  transition: background .2s, transform .2s;
  box-shadow: 0 4px 12px rgba(232,93,4,.35);
}
.school-cta-btn:hover {
  background: var(--color-accent2);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(232,93,4,.45);
}

/* =============================================
   まとめボックス
============================================= */
.summary-box {
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, #1a3a6e 100%);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin: 32px 0;
  color: #fff;
}
.summary-box h3 {
  font-size: 1.05rem;
  font-weight: 900;
  margin-bottom: 14px;
  color: var(--color-accent) !important;
  border-left: none !important;
  background: none !important;
  padding: 0 !important;
}
.summary-box ul { list-style: none; padding: 0; }
.summary-box li {
  padding: 6px 0 6px 24px;
  position: relative;
  font-size: .92rem;
  color: rgba(240,247,255,.9);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.summary-box li:last-child { border-bottom: none; }
.summary-box li::before { content: '✅'; position: absolute; left: 0; top: 6px; font-size: .85rem; }

/* アフィリエイト開示 */
.affiliate-disclosure {
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 10px 16px;
  font-size: .75rem;
  color: var(--color-text-light);
  margin-bottom: 20px;
}

/* =============================================
   サイドバー
============================================= */
.sidebar-cta {
  background: linear-gradient(135deg, var(--color-bg-dark), #1a3a6e);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  margin-bottom: 24px;
  text-align: center;
}
.sidebar-cta-title { font-size: .75rem; font-weight: 800; letter-spacing: .1em; opacity: .8; margin-bottom: 4px; text-transform: uppercase; }
.sidebar-cta-service { font-size: 1.3rem; font-weight: 900; margin-bottom: 4px; }
.sidebar-cta-price { font-size: .82rem; opacity: .85; line-height: 1.6; margin-bottom: 16px; }

.cta-btn {
  display: block;
  background: var(--color-accent);
  color: #fff !important;
  padding: 11px 20px;
  border-radius: 50px;
  font-weight: 800;
  font-size: .9rem;
  transition: background .2s;
  box-shadow: 0 4px 12px rgba(232,93,4,.4);
}
.cta-btn:hover { background: var(--color-accent2); }

.sidebar-widget {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
}
.sidebar-widget-title {
  font-size: .85rem;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-primary);
}

.popular-posts { list-style: none; padding: 0; }
.popular-posts li { padding: 8px 0; border-bottom: 1px solid var(--color-border); font-size: .83rem; line-height: 1.5; }
.popular-posts li:last-child { border-bottom: none; }
.popular-posts a { color: var(--color-text); }
.popular-posts a:hover { color: var(--color-primary); }

.cat-list { list-style: none; padding: 0; }
.cat-list li { border-bottom: 1px solid var(--color-border); }
.cat-list a { display: flex; justify-content: space-between; align-items: center; padding: 9px 4px; font-size: .83rem; color: var(--color-text); }
.cat-list a:hover { color: var(--color-primary); }
.cat-count { font-size: .7rem; color: #fff; background: var(--color-primary); padding: 2px 8px; border-radius: 20px; }

/* =============================================
   Footer
============================================= */
.site-footer {
  background: var(--color-bg-dark);
  color: rgba(240,247,255,.8);
  padding: 48px 20px 24px;
  margin-top: auto;
}
.footer-inner { max-width: 1100px; margin: 0 auto; }
.footer-top { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
.footer-brand h3 { font-size: 1.1rem; font-weight: 900; color: #fff; margin-bottom: 8px; }
.footer-brand p { font-size: .78rem; line-height: 1.8; opacity: .7; }
.footer-nav h4, .footer-schools h4 { font-size: .8rem; font-weight: 800; color: var(--color-accent); margin-bottom: 12px; text-transform: uppercase; }
.footer-nav ul, .footer-schools ul { list-style: none; padding: 0; }
.footer-nav li, .footer-schools li { margin-bottom: 6px; font-size: .78rem; }
.footer-nav a, .footer-schools a { color: rgba(240,247,255,.7); }
.footer-nav a:hover, .footer-schools a:hover { color: var(--color-accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 20px; display: flex; justify-content: space-between; align-items: center; font-size: .72rem; opacity: .6; flex-wrap: wrap; gap: 8px; }

/* =============================================
   パンくず
============================================= */
.breadcrumb { background: var(--color-secondary); padding: 10px 20px; font-size: .75rem; color: var(--color-text-light); }
.breadcrumb-inner { max-width: 1100px; margin: 0 auto; display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.breadcrumb a { color: var(--color-primary); }
.breadcrumb-sep { opacity: .5; }

/* =============================================
   画像・著作権
============================================= */
.image-copyright { font-size: .72rem; color: var(--color-text-light); text-align: right; margin: 0 0 20px; padding: 4px 8px; }
.image-copyright a { color: var(--color-text-light); text-decoration: underline; }
.image-copyright a:hover { color: var(--color-primary); }

.in-article-img { margin: 28px 0; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
.in-article-img img { width: 100%; height: auto; display: block; }
.in-article-img figcaption.image-copyright { text-align: left; margin: 0; padding: 6px 10px; background: var(--color-secondary); }

/* =============================================
   Responsive
============================================= */
@media (max-width: 768px) {
  .content-area { grid-template-columns: 1fr; padding: 24px 16px; gap: 32px; }
  .sidebar { order: 2; }
  .footer-top { grid-template-columns: 1fr; gap: 24px; }
  .site-nav { display: none; }
  .hero { padding: 48px 16px; }
  .school-card-specs { grid-template-columns: repeat(2, 1fr); }
  .posts-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 20px; }
}