/* ── Japanese Eras Database CSS ───────────────── */
:root {
  --primary:    #1B2B4E;
  --primary-lt: #2B3F6E;
  --accent:     #C9A227;
  --accent-lt:  #E0B840;
  --bg:         #FAFAF8;
  --surface:    #FFFFFF;
  --text:       #1A1A1A;
  --text-muted: #666;
  --border:     #E0DDD6;
  --font-en:    'Inter', sans-serif;
  --font-jp:    'Noto Sans JP', sans-serif;
  --radius:     8px;
  --shadow:     0 2px 8px rgba(0,0,0,.10);
  --max-width:  1100px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:var(--font-en);background:var(--bg);color:var(--text);line-height:1.65;font-size:16px;}

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

/* ── Top bar ── */
.top-bar{background:#1a1a1a;text-align:center;padding:5px 0;font-size:.75rem;}
.top-bar-link{color:#C9A227;text-decoration:none;letter-spacing:.05em;font-weight:600;}
.top-bar-link:hover{text-decoration:underline;}

/* ── Header ── */
.site-header{background:var(--primary);padding:14px 0;position:sticky;top:0;z-index:100;box-shadow:0 2px 8px rgba(0,0,0,.3);}
.site-header .container{display:flex;align-items:center;gap:16px;flex-wrap:wrap;}
.site-logo{color:var(--accent);font-weight:800;font-size:1.1rem;text-decoration:none;white-space:nowrap;letter-spacing:.02em;}
.site-logo span{color:#fff;}
.header-search{display:flex;gap:8px;flex:1;max-width:420px;margin-left:auto;}
.header-search input{flex:1;padding:8px 14px;border:none;border-radius:6px;font-size:.9rem;background:rgba(255,255,255,.1);color:#fff;border:1px solid rgba(255,255,255,.2);}
.header-search input::placeholder{color:rgba(255,255,255,.5);}
.header-search input:focus{outline:none;background:rgba(255,255,255,.18);}
.header-search button{padding:8px 18px;background:var(--accent);color:var(--primary);border:none;border-radius:6px;font-weight:700;cursor:pointer;font-size:.9rem;white-space:nowrap;}
.header-search button:hover{background:var(--accent-lt);}

/* ── Hero ── */
.hero{background:linear-gradient(135deg,rgba(27,43,78,.92),rgba(27,43,78,.72));padding:72px 0 60px;text-align:center;color:#fff;}
.hero h1{font-size:clamp(1.8rem,4vw,3rem);font-weight:800;letter-spacing:-.02em;line-height:1.2;text-shadow:0 2px 8px rgba(0,0,0,.4);}
.hero-subtitle{font-family:var(--font-jp);font-size:1.6rem;color:var(--accent);margin-top:8px;letter-spacing:.1em;}
.hero p.hero-desc{margin:16px auto 28px;max-width:680px;font-size:1.05rem;opacity:.9;}
.hero-stats{display:flex;justify-content:center;gap:32px;flex-wrap:wrap;margin-top:24px;}
.stat{display:flex;flex-direction:column;align-items:center;}
.stat-num{font-size:2rem;font-weight:800;color:var(--accent);line-height:1;}
.stat-lbl{font-size:.78rem;opacity:.8;margin-top:4px;text-transform:uppercase;letter-spacing:.06em;}

/* ── Filter bar ── */
.filter-bar{background:var(--surface);border-bottom:1px solid var(--border);padding:14px 0;position:sticky;top:54px;z-index:90;}
.filter-bar .container{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.filter-label{font-weight:600;font-size:.85rem;color:var(--text-muted);white-space:nowrap;}
.filter-btn{padding:6px 14px;border:1.5px solid var(--border);background:none;border-radius:20px;font-size:.82rem;cursor:pointer;color:var(--text-muted);transition:all .15s;white-space:nowrap;}
.filter-btn:hover{border-color:var(--primary);color:var(--primary);}
.filter-btn.active{background:var(--primary);color:var(--accent);border-color:var(--primary);font-weight:600;}
.results-meta{font-size:.85rem;color:var(--text-muted);padding:10px 0;}

/* ── Cards ── */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;margin-top:16px;padding-bottom:48px;}
.card{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;transition:transform .18s,box-shadow .18s;border:1px solid var(--border);}
.card:hover{transform:translateY(-3px);box-shadow:0 6px 24px rgba(0,0,0,.14);}
.card-img-link{display:block;text-decoration:none;}
.card-img{height:120px;display:flex;align-items:center;justify-content:center;position:relative;}
.ph-label{color:rgba(255,255,255,.55);font-size:.8rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;z-index:0;}
.ph-kanji{font-family:var(--font-jp);font-size:2.4rem;color:rgba(255,255,255,.85);font-weight:700;letter-spacing:.05em;text-shadow:0 2px 8px rgba(0,0,0,.4);}

/* Period placeholder colors */
.ph-ancient    { background: linear-gradient(135deg, #3B1F0E 0%, #6B3A1A 100%); }
.ph-nara       { background: linear-gradient(135deg, #2A1A3E 0%, #4A3070 100%); }
.ph-heian      { background: linear-gradient(135deg, #1A2E3E 0%, #2A5470 100%); }
.ph-kamakura   { background: linear-gradient(135deg, #1E3A20 0%, #2E6030 100%); }
.ph-kenmu      { background: linear-gradient(135deg, #3A2010 0%, #6A3820 100%); }
.ph-nanbokucho { background: linear-gradient(135deg, #3A1020 0%, #6A2040 100%); }
.ph-muromachi  { background: linear-gradient(135deg, #1A2A3A 0%, #2A4A6A 100%); }
.ph-azuchi     { background: linear-gradient(135deg, #3A2800 0%, #8A6000 100%); }
.ph-edo        { background: linear-gradient(135deg, #0E2A2A 0%, #1A5050 100%); }
.ph-meiji      { background: linear-gradient(135deg, #2A0A0A 0%, #6A1A1A 100%); }
.ph-taisho     { background: linear-gradient(135deg, #2A1A0A 0%, #6A4A1A 100%); }
.ph-showa      { background: linear-gradient(135deg, #0A1A2A 0%, #1A3A6A 100%); }
.ph-heisei     { background: linear-gradient(135deg, #1A1A2A 0%, #3A3A6A 100%); }
.ph-reiwa      { background: linear-gradient(135deg, #1B2B4E 0%, #2B3F6E 100%); }

.card-body{padding:16px;flex:1;}
.card-category{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--accent);margin-bottom:6px;}
.card-title-link{text-decoration:none;color:inherit;}
.card-title{font-size:1rem;font-weight:700;line-height:1.3;color:var(--primary);}
.card-title-link:hover .card-title{color:var(--accent);}
.card-jp{font-family:var(--font-jp);font-size:.95rem;color:var(--text-muted);margin-top:3px;}
.card-dates{font-size:.8rem;color:var(--text-muted);margin-top:6px;}
.card-emperor{font-size:.78rem;color:var(--text-muted);margin-top:4px;}
.card-meaning{font-size:.8rem;color:var(--text-muted);margin-top:6px;font-style:italic;}
.card-desc{font-size:.82rem;color:var(--text-muted);margin-top:8px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.card-footer{padding:12px 16px;border-top:1px solid var(--border);background:#faf9f7;}
.card-link{color:var(--primary);font-weight:600;font-size:.85rem;text-decoration:none;}
.card-link:hover{color:var(--accent);}

/* ── Breadcrumb ── */
.breadcrumb{font-size:.82rem;color:var(--text-muted);padding:16px 0 8px;display:flex;gap:6px;align-items:center;flex-wrap:wrap;}
.breadcrumb a{color:var(--primary);text-decoration:none;}
.breadcrumb a:hover{text-decoration:underline;}
.breadcrumb span{color:var(--border);}

/* ── Detail page ── */
.detail-layout{display:grid;grid-template-columns:1fr 300px;gap:32px;margin-top:12px;padding-bottom:64px;}
@media(max-width:768px){.detail-layout{grid-template-columns:1fr;}}
.detail-main h1{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;color:var(--primary);line-height:1.2;}
.detail-jp{font-family:var(--font-jp);font-size:1.4rem;color:var(--text-muted);margin-top:4px;letter-spacing:.05em;}
.detail-kanji-hero{font-family:var(--font-jp);font-size:3rem;font-weight:700;color:var(--accent);margin:8px 0 4px;line-height:1;}
.detail-badge{display:inline-block;padding:3px 12px;border-radius:12px;font-size:.75rem;font-weight:700;color:#fff;background:var(--primary);margin-bottom:10px;}
.detail-court-badge{display:inline-block;padding:3px 12px;border-radius:12px;font-size:.75rem;font-weight:700;color:var(--primary);background:var(--accent);margin-bottom:10px;margin-left:8px;}
.detail-description{font-size:1rem;line-height:1.8;color:var(--text);margin:20px 0;}
.body-en{margin-top:24px;}
.body-en p{font-size:1rem;line-height:1.8;color:var(--text);margin-bottom:1em;}
.detail-meta-table{width:100%;border-collapse:collapse;font-size:.88rem;margin:16px 0;}
.detail-meta-table th,.detail-meta-table td{padding:9px 12px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top;}
.detail-meta-table th{color:var(--text-muted);font-weight:600;width:140px;white-space:nowrap;}
.detail-meta-table td{color:var(--text);}

/* ── Sidebar ── */
.sidebar-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;margin-bottom:20px;box-shadow:var(--shadow);}
.sidebar-card h3{font-size:.95rem;font-weight:700;color:var(--primary);margin-bottom:12px;padding-bottom:8px;border-bottom:2px solid var(--accent);}
.related-list{list-style:none;}
.related-list li{padding:8px 0;border-bottom:1px solid var(--border);}
.related-list li:last-child{border-bottom:none;}
.related-list a{color:var(--primary);text-decoration:none;font-weight:600;font-size:.88rem;}
.related-list a:hover{color:var(--accent);}
.related-jp{font-family:var(--font-jp);font-size:.78rem;color:var(--text-muted);margin-top:2px;}
.related-dates{font-size:.75rem;color:var(--text-muted);}

/* ── Category pages ── */
.category-header{padding:32px 0 20px;}
.category-header h1{font-size:1.8rem;font-weight:800;color:var(--primary);}
.category-header p{color:var(--text-muted);margin-top:6px;}
.category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px;margin-top:16px;padding-bottom:48px;}
.cat-card{background:var(--surface);border-radius:var(--radius);border:1px solid var(--border);padding:24px 20px;text-align:center;box-shadow:var(--shadow);transition:transform .15s;cursor:pointer;}
.cat-card:hover{transform:translateY(-2px);box-shadow:0 4px 16px rgba(0,0,0,.12);}
.cat-card h2{font-size:.95rem;font-weight:700;color:var(--primary);margin-bottom:12px;}
.cat-card .count{font-size:2.2rem;font-weight:800;color:var(--accent);}
.cat-card .count-lbl{font-size:.75rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.06em;}

/* ── Ad unit ── */
.ad-unit{text-align:center;padding:20px 0;min-height:90px;}
.ad-unit ins.adsbygoogle{display:block!important;visibility:hidden;}

/* ── Footer ── */
.site-footer{background:var(--primary);color:rgba(255,255,255,.6);text-align:center;padding:28px 20px;font-size:.82rem;line-height:1.8;}
.site-footer a{color:var(--accent);text-decoration:none;}
.site-footer a:hover{text-decoration:underline;}

@media(max-width:640px){
  .hero h1{font-size:1.6rem;}
  .hero-stats{gap:20px;}
  .filter-bar .container{gap:6px;}
  .filter-btn{font-size:.75rem;padding:5px 10px;}
}