/* ============================================================
   ITパスポート用語辞書 — dict-style.css
   和紙クリームテーマ踏襲
   ============================================================ */
:root {
  --bg-primary: #FAF8F3;
  --bg-secondary: #F3EFE6;
  --bg-card: #FFFFFF;
  --accent: #B8943E;
  --accent-hover: #9A7A30;
  --accent-soft: #F5EFD9;
  --text-primary: #3C3528;
  --text-secondary: #6B6256;
  --text-tertiary: #9A9084;
  --text-on-accent: #FFFFFF;
  --border: #E8E2D4;
  --border-light: #F0EBE0;
  --shadow-sm: 0 1px 3px rgba(60,53,40,0.06);
  --shadow-md: 0 4px 12px rgba(60,53,40,0.08);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --max-width: 800px;
  --success: #5A8A5C;
  --error: #C45B4A;
  --font-body: 'Noto Sans JP', -apple-system, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #1C1A16;
    --bg-secondary: #252219;
    --bg-card: #2A2720;
    --accent: #D4A843;
    --accent-hover: #E0BA5A;
    --accent-soft: rgba(212,168,67,0.12);
    --text-primary: #E8E2D4;
    --text-secondary: #B8B0A2;
    --text-tertiary: #8A8278;
    --text-on-accent: #1C1A16;
    --border: #3D3A33;
    --border-light: #33302A;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
  }
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: var(--font-body); background: var(--bg-primary); color: var(--text-primary); line-height: 1.8; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); text-decoration: underline; }

/* Header */
.dict-header { max-width: var(--max-width); margin: 0 auto; padding: 16px 20px; }
.back-link { font-size: 0.85rem; color: var(--text-tertiary); }

/* Breadcrumb */
.breadcrumb { font-size: 0.8rem; color: var(--text-tertiary); margin-bottom: 16px; }
.breadcrumb .sep { margin: 0 6px; }
.breadcrumb a { color: var(--text-tertiary); }
.breadcrumb a:hover { color: var(--accent); }

/* === TERM PAGE === */
.term-main { max-width: var(--max-width); margin: 0 auto; padding: 0 20px 60px; }

.term-article { background: var(--bg-card); border-radius: var(--radius-lg); padding: 32px 28px; box-shadow: var(--shadow-md); margin-bottom: 24px; }

.term-header { margin-bottom: 28px; border-bottom: 1px solid var(--border-light); padding-bottom: 20px; }
.term-name { font-size: 1.6rem; font-weight: 700; line-height: 1.3; margin-bottom: 8px; }
.term-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; font-size: 0.85rem; color: var(--text-secondary); }
.term-abbr { font-weight: 600; background: var(--accent-soft); padding: 2px 8px; border-radius: 4px; }
.term-english { font-style: italic; }
.term-reading { color: var(--text-tertiary); }
.term-badges { display: flex; flex-wrap: wrap; gap: 6px; }

.badge { display: inline-block; padding: 3px 10px; border-radius: 20px; font-size: 0.75rem; font-weight: 500; border: 1px solid var(--border); }
.badge-sm { padding: 1px 6px; font-size: 0.7rem; border-radius: 10px; border: 1px solid var(--border-light); }

.freq-highest { background: #FFF0E0; border-color: #E8A040; color: #8B5E14; }
.freq-high { background: #FFF8E0; border-color: #D4B060; color: #7A6420; }
.freq-mid { background: #F0F0E8; border-color: #B8B0A0; color: #6B6256; }
.freq-low, .freq-none { background: var(--bg-secondary); color: var(--text-tertiary); }

.cls-critical { background: #FFE8E8; border-color: #E06060; color: #A03030; }
.cls-important { background: #FFF0E0; border-color: #E0A040; color: #8B5E14; }
.cls-old_important { background: #FFFAE8; border-color: #D0C060; color: #7A6420; }
.cls-legacy { background: var(--bg-secondary); color: var(--text-tertiary); }

.cat-badge a { color: inherit; text-decoration: none; }
.cat-badge a:hover { text-decoration: underline; }

/* Explanations (web: short only) */
.term-explanation { margin-bottom: 16px; }
.term-explanation h2 { font-size: 1.1rem; margin-bottom: 12px; color: var(--accent); }
.expl-short { font-size: 1rem; font-weight: 500; }

/* App teaser (premium content lock) */
.app-teaser { margin: 20px 0 24px; padding: 20px; background: linear-gradient(135deg, var(--accent-soft), var(--bg-secondary)); border: 1px dashed var(--accent); border-radius: var(--radius-md); text-align: center; }
.teaser-label { font-size: 0.9rem; color: var(--accent); margin-bottom: 12px; font-weight: 500; }
.app-teaser .cta-btn { display: inline-block; margin-top: 4px; }

/* Internal links */
.term-link { color: var(--accent); font-weight: 500; border-bottom: 1px dotted var(--accent); }
.term-link:hover { border-bottom-style: solid; }

/* Related */
.synonyms, .antonyms, .parent-concept { font-size: 0.85rem; margin-bottom: 8px; }
.label { font-weight: 600; margin-right: 4px; }
.related-terms { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border-light); }
.related-terms h3 { font-size: 1rem; margin-bottom: 8px; }
.related-list { display: flex; flex-wrap: wrap; gap: 8px; }
.related-link { display: inline-block; padding: 4px 12px; background: var(--accent-soft); border-radius: 20px; font-size: 0.85rem; color: var(--accent); transition: background 0.2s; }
.related-link:hover { background: var(--accent); color: var(--text-on-accent); text-decoration: none; }
.related-nolink { display: inline-block; padding: 4px 12px; background: var(--bg-secondary); border-radius: 20px; font-size: 0.85rem; color: var(--text-tertiary); }

/* CTA */
.cta-box { margin: 32px 0; }
.cta-inner { background: linear-gradient(135deg, var(--accent-soft), var(--bg-card)); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 24px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.cta-icon { font-size: 2rem; }
.cta-text { flex: 1; min-width: 200px; }
.cta-title { font-weight: 700; font-size: 1rem; }
.cta-desc { font-size: 0.85rem; color: var(--text-secondary); }
.cta-btn { display: inline-block; padding: 10px 24px; background: var(--accent); color: var(--text-on-accent); border-radius: 24px; font-weight: 600; font-size: 0.9rem; transition: background 0.2s; white-space: nowrap; }
.cta-btn:hover { background: var(--accent-hover); text-decoration: none; }

/* === INDEX PAGE === */
.index-main { max-width: var(--max-width); margin: 0 auto; padding: 0 20px 60px; }
.index-hero { text-align: center; margin-bottom: 40px; }
.index-hero h1 { font-size: 1.8rem; margin-bottom: 8px; }
.index-subtitle { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: 8px; }
.index-desc { font-size: 0.9rem; color: var(--text-tertiary); }
.index-section { margin-bottom: 32px; }
.index-section h2 { font-size: 1.1rem; margin-bottom: 12px; color: var(--accent); }
.index-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; }
.index-card { display: flex; flex-direction: column; align-items: center; padding: 16px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-md); text-align: center; transition: box-shadow 0.2s, border-color 0.2s; }
.index-card:hover { box-shadow: var(--shadow-md); border-color: var(--accent); text-decoration: none; }
.index-card-count { font-size: 1.4rem; font-weight: 700; color: var(--accent); }
.index-card-label { font-size: 0.85rem; color: var(--text-secondary); }
.kana-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.kana-link { display: flex; flex-direction: column; align-items: center; width: 60px; padding: 10px 0; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm); transition: all 0.2s; }
.kana-link:hover { border-color: var(--accent); text-decoration: none; box-shadow: var(--shadow-sm); }
.kana-char { font-size: 1.2rem; font-weight: 700; }
.kana-count { font-size: 0.7rem; color: var(--text-tertiary); }

/* === LIST PAGE === */
.list-main { max-width: var(--max-width); margin: 0 auto; padding: 0 20px 60px; }
.list-main h1 { font-size: 1.4rem; margin-bottom: 4px; }
.list-count { font-size: 0.85rem; color: var(--text-tertiary); margin-bottom: 16px; }
.list-container { display: flex; flex-direction: column; gap: 8px; }
.list-item { display: grid; grid-template-columns: 1fr auto; grid-template-rows: auto auto; gap: 2px 12px; padding: 12px 16px; background: var(--bg-card); border: 1px solid var(--border-light); border-radius: var(--radius-sm); transition: border-color 0.2s; }
.list-item:hover { border-color: var(--accent); text-decoration: none; }
.list-item-name { font-weight: 600; color: var(--text-primary); grid-column: 1; }
.list-item-reading { font-size: 0.8rem; color: var(--text-tertiary); grid-column: 1; }
.list-item-badges { grid-column: 2; grid-row: 1 / 3; display: flex; flex-direction: column; gap: 2px; align-items: flex-end; justify-content: center; }
.list-item-desc { display: none; }

/* Footer */
.dict-footer { max-width: var(--max-width); margin: 0 auto; padding: 24px 20px; border-top: 1px solid var(--border); text-align: center; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; margin-bottom: 12px; font-size: 0.8rem; }
.footer-links a { color: var(--text-tertiary); }
.copyright { font-size: 0.75rem; color: var(--text-tertiary); margin-bottom: 8px; }
.disclaimer { font-size: 0.7rem; color: var(--text-tertiary); }

/* Responsive */
@media (max-width: 600px) {
  .term-article { padding: 20px 16px; }
  .term-name { font-size: 1.3rem; }
  .cta-inner { flex-direction: column; text-align: center; }
  .kana-link { width: 50px; }
  .index-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Dark mode badge overrides */
@media (prefers-color-scheme: dark) {
  .freq-highest { background: rgba(232,160,64,0.15); border-color: rgba(232,160,64,0.4); color: #E8A040; }
  .freq-high { background: rgba(212,176,96,0.15); border-color: rgba(212,176,96,0.4); color: #D4B060; }
  .freq-mid { background: rgba(184,176,160,0.15); border-color: rgba(184,176,160,0.3); color: #B8B0A0; }
  .cls-critical { background: rgba(224,96,96,0.15); border-color: rgba(224,96,96,0.4); color: #E06060; }
  .cls-important { background: rgba(224,160,64,0.15); border-color: rgba(224,160,64,0.4); color: #E0A040; }
  .cls-old_important { background: rgba(208,192,96,0.15); border-color: rgba(208,192,96,0.4); color: #D0C060; }
}