/* ===================================================
   ITパスポート学習サイト - メインスタイルシート
   初心者向け / やさしい配色 / スマホファースト
=================================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

/* ---- リスト（CSSリセット補完） ---- */
ul, ol { padding-left: 1.5em; }
li { margin-bottom: 4px; line-height: 1.65; }
.check-list, .quiz-options, .filter-bar,
.topic-list, .progress-stats, .recommend-grid, .order-list { padding-left: 0; }
.check-list li, .quiz-options li { margin-bottom: 0; }

:root {
  --primary: #0284c7;
  --primary-dark: #0369a1;
  --primary-light: #e0f2fe;
  --secondary: #f59e0b;
  --secondary-light: #fef3c7;
  --accent-green: #10b981;
  --accent-green-light: #d1fae5;
  --accent-amber: #f59e0b;
  --accent-amber-light: #fef3c7;
  --accent-red: #ef4444;
  --accent-red-light: #fee2e2;
  --accent-purple: #8b5cf6;
  --accent-purple-light: #ede9fe;
  --accent-teal: #14b8a6;
  --accent-teal-light: #ccfbf1;
  --bg: #f0f9ff;
  --bg-subtle: #f8fafc;
  --card-bg: #ffffff;
  --text-primary: #0c1a2e;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --border: #e0f2fe;
  --border-strong: #bae6fd;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.10), 0 4px 8px rgba(0,0,0,0.06);
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --font-main: 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Noto Sans JP', 'Meiryo', sans-serif;
}

html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }

/* ---- ヘッダー ---- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  padding: 0 16px;
  padding-left: max(16px, env(safe-area-inset-left));
  padding-right: max(16px, env(safe-area-inset-right));
}
.header-inner {
  max-width: 800px; margin: 0 auto;
  height: 52px; display: flex; align-items: center;
  justify-content: space-between; gap: 12px;
}
.back-link {
  display: flex; align-items: center; gap: 4px;
  font-size: 0.88rem; font-weight: 600; color: var(--primary);
  padding: 8px 14px; border-radius: var(--radius-sm);
  background: var(--primary-light); transition: background 0.15s;
  white-space: nowrap; min-height: 40px;
}
.back-link:hover { background: #bae6fd; text-decoration: none; }
.back-link:active { background: #7dd3fc; text-decoration: none; }
.header-progress-text { font-size: 0.75rem; color: var(--text-muted); white-space: nowrap; }

/* ---- ヒーロー ---- */
.site-hero {
  background: linear-gradient(135deg, #0c4a6e 0%, #0369a1 40%, #0284c7 70%, #0ea5e9 100%);
  color: white; padding: 40px 20px 36px; text-align: center;
}
.site-hero h1 {
  font-size: 1.6rem; font-weight: 800;
  letter-spacing: -0.02em; margin-bottom: 8px; line-height: 1.3;
}
.site-hero p { font-size: 0.9rem; opacity: 0.88; max-width: 440px; margin: 0 auto 20px; }
.hero-badge {
  display: inline-block; background: rgba(255,255,255,0.18);
  border: 1px solid rgba(255,255,255,0.35); border-radius: 20px;
  padding: 4px 14px; font-size: 0.8rem; font-weight: 600; margin-bottom: 16px;
}

/* ---- 進捗バー ---- */
.progress-section {
  background: var(--card-bg); border-bottom: 1px solid var(--border);
  padding: 16px 20px;
}
.progress-inner { max-width: 800px; margin: 0 auto; }
.progress-header {
  display: flex; justify-content: space-between;
  align-items: baseline; margin-bottom: 8px;
}
.progress-title { font-size: 0.85rem; font-weight: 700; color: var(--text-secondary); }
.progress-count { font-size: 1.1rem; font-weight: 800; color: var(--primary); }
.progress-count span { font-size: 0.8rem; font-weight: 500; color: var(--text-muted); }
.progress-bar-track {
  width: 100%; height: 10px; background: var(--border);
  border-radius: 99px; overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), #38bdf8);
  border-radius: 99px; transition: width 0.5s ease;
}
.progress-stats { display: flex; gap: 16px; margin-top: 8px; }
.progress-stat {
  font-size: 0.78rem; color: var(--text-muted);
  display: flex; align-items: center; gap: 4px;
}
.progress-stat .dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.dot-done { background: var(--accent-green); }
.dot-todo { background: var(--border-strong); }

/* ---- おすすめ ---- */
.recommend-section { padding: 16px 16px 0; max-width: 800px; margin: 0 auto; }
.section-label {
  font-size: 0.8rem; font-weight: 700; color: var(--text-secondary);
  text-transform: uppercase; letter-spacing: 0.08em;
  margin-bottom: 10px; display: flex; align-items: center; gap: 6px;
}
.recommend-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px;
}
.recommend-card {
  background: linear-gradient(135deg, #f0f9ff, #e0f2fe);
  border: 1px solid #bae6fd; border-radius: var(--radius-sm);
  padding: 12px; cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s;
  display: block; color: var(--text-primary);
}
.recommend-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); text-decoration: none; }
.recommend-card:active { transform: scale(0.98); }
.rec-label { font-size: 0.65rem; font-weight: 700; color: var(--primary); margin-bottom: 4px; }
.rec-title { font-size: 0.8rem; font-weight: 700; line-height: 1.3; }
.rec-time { font-size: 0.7rem; color: var(--text-muted); margin-top: 4px; }

/* ---- フィルターバー ---- */
.filter-section { padding: 12px 16px 0; max-width: 800px; margin: 0 auto; }
.filter-bar {
  display: flex; gap: 8px; overflow-x: auto; flex-wrap: nowrap;
  padding-bottom: 4px; scrollbar-width: none;
  -ms-overflow-style: none; overscroll-behavior-x: contain;
  -webkit-overflow-scrolling: touch;
}
.filter-bar::-webkit-scrollbar { display: none; }
.filter-btn {
  padding: 8px 16px; border-radius: 20px;
  border: 1.5px solid var(--border-strong);
  background: var(--card-bg); color: var(--text-secondary);
  font-size: 0.78rem; font-weight: 600; cursor: pointer;
  transition: all 0.15s; font-family: var(--font-main);
  min-height: 40px; white-space: nowrap;
}
.filter-btn:hover { border-color: var(--primary); color: var(--primary); }
.filter-btn:active { transform: scale(0.96); }
.filter-btn.active { background: var(--primary); border-color: var(--primary); color: white; }

/* ---- カテゴリ・トピック一覧 ---- */
.category-section { padding: 16px 16px 0; max-width: 800px; margin: 0 auto; }
.category-label {
  font-size: 0.75rem; font-weight: 700; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.1em;
  padding: 4px 0; margin-top: 8px; margin-bottom: 8px;
  border-bottom: 2px solid var(--border);
  display: flex; align-items: center; gap: 6px;
}
.topic-list { display: flex; flex-direction: column; gap: 10px; }
.topic-card {
  background: var(--card-bg); border-radius: var(--radius);
  border: 1px solid var(--border); padding: 14px 16px;
  display: flex; align-items: flex-start; gap: 12px;
  cursor: pointer; transition: all 0.15s; position: relative;
  overflow: hidden; text-decoration: none; color: var(--text-primary);
}
.topic-card:hover { border-color: var(--primary); box-shadow: var(--shadow); transform: translateY(-1px); text-decoration: none; }
.topic-card:active { transform: scale(0.99); box-shadow: none; text-decoration: none; }
.topic-card.completed { background: #f0fdf4; border-color: #86efac; }
.topic-card.completed::before {
  content: ''; position: absolute; left: 0; top: 0; bottom: 0;
  width: 4px; background: var(--accent-green);
}
.topic-card-check {
  width: 28px; height: 28px; border-radius: 50%;
  border: 2px solid var(--border-strong);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; margin-top: 2px; transition: all 0.15s; font-size: 0.85rem;
}
.topic-card.completed .topic-card-check { background: var(--accent-green); border-color: var(--accent-green); color: white; }
.topic-card-body { flex: 1; min-width: 0; }
.topic-card-title { font-size: 0.95rem; font-weight: 700; line-height: 1.3; margin-bottom: 4px; }
.topic-card-summary { font-size: 0.8rem; color: var(--text-secondary); line-height: 1.4; margin-bottom: 6px; }
.topic-card-meta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.badge {
  display: inline-flex; align-items: center;
  padding: 2px 8px; border-radius: 20px;
  font-size: 0.7rem; font-weight: 700; line-height: 1.4;
}
.badge-time { background: #f1f5f9; color: var(--text-secondary); }
.badge-freq-high { background: #fee2e2; color: #dc2626; }
.badge-freq-medium { background: #fef3c7; color: #d97706; }
.badge-freq-low { background: #f1f5f9; color: var(--text-muted); }
.badge-imp { background: var(--primary-light); color: var(--primary-dark); }
.badge-done { background: var(--accent-green-light); color: #059669; }

/* ---- 学習ページ ---- */
.page-main {
  max-width: 800px; margin: 0 auto;
  padding: 16px 16px 40px;
  padding-left: max(16px, env(safe-area-inset-left));
  padding-right: max(16px, env(safe-area-inset-right));
  padding-bottom: max(40px, calc(env(safe-area-inset-bottom) + 24px));
}
.breadcrumb {
  font-size: 0.75rem; color: var(--text-muted);
  margin-bottom: 8px; display: flex; align-items: center; gap: 4px; flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb-sep { color: var(--border-strong); }
.page-header { margin-bottom: 20px; }
.page-title {
  font-size: 1.5rem; font-weight: 800;
  line-height: 1.3; letter-spacing: -0.02em;
  color: var(--text-primary); margin-bottom: 10px;
}
.page-meta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.meta-time { background: var(--primary-light); color: var(--primary-dark); padding: 4px 10px; border-radius: 20px; font-size: 0.8rem; font-weight: 600; }
.meta-importance { color: var(--accent-amber); font-size: 0.9rem; font-weight: 700; }
.meta-freq { padding: 4px 10px; border-radius: 20px; font-size: 0.78rem; font-weight: 700; }
.meta-freq.high { background: #fee2e2; color: #dc2626; }
.meta-freq.medium { background: #fef3c7; color: #d97706; }
.meta-freq.low { background: #f1f5f9; color: var(--text-muted); }

/* ---- カード ---- */
.card {
  background: var(--card-bg); border-radius: var(--radius);
  border: 1px solid var(--border); padding: 20px;
  margin-bottom: 14px; box-shadow: var(--shadow-sm);
  animation: fadeIn 0.3s ease both;
}
.card:nth-child(1) { animation-delay: 0.04s; }
.card:nth-child(2) { animation-delay: 0.08s; }
.card:nth-child(3) { animation-delay: 0.12s; }
.card:nth-child(4) { animation-delay: 0.16s; }
.card:nth-child(5) { animation-delay: 0.20s; }
.card:nth-child(n+6) { animation-delay: 0.24s; }

.conclusion-card { background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%); border-color: #7dd3fc; }
.example-card { background: linear-gradient(135deg, #fffbeb 0%, #fef9c3 100%); border-color: #fcd34d; }
.exam-card { background: linear-gradient(135deg, #fefce8 0%, #fffbeb 100%); border-color: #fcd34d; }
.warning-card { background: linear-gradient(135deg, #fff7ed 0%, #fff1f2 100%); border-color: #fca5a5; }
.quiz-card { background: linear-gradient(135deg, #f0fdf4 0%, #ecfdf5 100%); border-color: #86efac; }

.section-title {
  font-size: 1rem; font-weight: 800; color: var(--text-primary);
  margin-bottom: 14px; display: flex; align-items: center; gap: 6px;
}
p { margin-bottom: 10px; font-size: 0.95rem; line-height: 1.75; }
p:last-child { margin-bottom: 0; }

.keyword { color: var(--primary); font-weight: 700; }
.keyword-red { color: var(--accent-red); font-weight: 700; }
.keyword-green { color: var(--accent-green); font-weight: 700; }
.keyword-amber { color: var(--accent-amber); font-weight: 700; }

/* ---- ハイライトボックス ---- */
.highlight-box {
  background: var(--primary-light);
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 12px 16px; margin: 12px 0; font-size: 0.9rem;
}
.highlight-box.amber { background: var(--accent-amber-light); border-color: var(--accent-amber); }
.highlight-box.green { background: var(--accent-green-light); border-color: var(--accent-green); }
.highlight-box.red { background: var(--accent-red-light); border-color: var(--accent-red); }
.highlight-box.teal { background: var(--accent-teal-light); border-color: var(--accent-teal); }

/* ---- ダイアグラム ---- */
.diagram-wrap {
  overflow-x: auto; margin: 12px 0;
  overscroll-behavior-x: contain; -webkit-overflow-scrolling: touch;
}
.diagram-box {
  background: #f8fafc; border: 1.5px solid var(--border);
  border-radius: var(--radius-sm); padding: 16px;
  text-align: center;
}
.flow-arrow { font-size: 1.2rem; color: var(--text-muted); line-height: 1.2; padding: 2px 0; }

/* ---- テーブル ---- */
table { width: 100%; border-collapse: collapse; font-size: 0.85rem; margin: 10px 0; }
th { background: var(--primary); color: white; padding: 8px 12px; text-align: left; font-weight: 700; font-size: 0.8rem; }
th:first-child { border-radius: 8px 0 0 0; }
th:last-child { border-radius: 0 8px 0 0; }
td { padding: 8px 12px; border-bottom: 1px solid var(--border); vertical-align: top; line-height: 1.5; }
tr:nth-child(even) td { background: var(--bg-subtle); }
tr:hover td { background: var(--primary-light); }
.table-wrap {
  overflow-x: auto; margin: 10px 0; border-radius: 8px;
  border: 1px solid var(--border); overscroll-behavior-x: contain;
  -webkit-overflow-scrolling: touch;
}
.table-wrap table { margin: 0; }

/* ---- 比較グリッド ---- */
.compare-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 10px 0; }
.compare-card { border-radius: var(--radius-sm); padding: 12px; border: 2px solid var(--border); }
.compare-card-title { font-size: 0.9rem; font-weight: 700; margin-bottom: 8px; line-height: 1.3; }

/* ---- チェックリスト ---- */
.check-list { list-style: none; display: flex; flex-direction: column; gap: 8px; margin: 8px 0; }
.check-list li { display: flex; align-items: flex-start; gap: 8px; font-size: 0.9rem; line-height: 1.5; }
.check-list li::before { content: '✓'; color: var(--accent-green); font-weight: 800; flex-shrink: 0; margin-top: 1px; }
.check-list li.warn::before { content: '⚠'; color: var(--accent-amber); }
.check-list li.bad::before { content: '✗'; color: var(--accent-red); }
.check-list li.note::before { content: '→'; color: var(--primary); }

/* ---- ポイントボックス ---- */
.point-box {
  display: flex; gap: 12px; align-items: flex-start;
  background: var(--primary-light); border-radius: var(--radius-sm);
  padding: 12px 14px; margin: 8px 0;
}
.point-num {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--primary); color: white;
  font-weight: 800; font-size: 0.8rem;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.point-content { flex: 1; font-size: 0.88rem; line-height: 1.6; }
.point-content strong { color: var(--primary-dark); }

/* ---- クイズ ---- */
.quiz-item { margin-bottom: 20px; padding-bottom: 20px; border-bottom: 1px solid var(--border); }
.quiz-item:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.quiz-question { font-size: 0.92rem; font-weight: 700; color: var(--text-primary); line-height: 1.55; margin-bottom: 10px; }
.quiz-choices { display: flex; flex-direction: column; gap: 7px; }
.quiz-choices button {
  display: block; width: 100%; padding: 12px 16px;
  border-radius: var(--radius-sm); border: 1.5px solid var(--border);
  background: var(--card-bg); color: var(--text-primary);
  font-family: var(--font-main); font-size: 0.88rem; font-weight: 500;
  line-height: 1.5; text-align: left; cursor: pointer;
  transition: border-color 0.15s, background 0.15s, transform 0.1s;
  min-height: 48px; -webkit-tap-highlight-color: transparent;
}
.quiz-choices button:hover:not(:disabled) { border-color: var(--primary); background: var(--primary-light); }
.quiz-choices button:active:not(:disabled) { transform: scale(0.98); }
.quiz-choices button:disabled { cursor: default; }
.quiz-choices button.correct { border-color: var(--accent-green); background: var(--accent-green-light); color: #065f46; font-weight: 700; }
.quiz-choices button.wrong { border-color: var(--accent-red); background: var(--accent-red-light); color: #991b1b; }
.quiz-explanation {
  margin-top: 10px; padding: 12px 16px;
  background: var(--accent-green-light); border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent-green); font-size: 0.86rem; line-height: 1.7; display: none;
}
.quiz-explanation.show { display: block; animation: slideDown 0.25s ease both; }

/* ---- 完了ボタン・ナビ ---- */
.completion-area { text-align: center; padding: 24px 0 10px; }
.btn-complete {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px;
  background: linear-gradient(135deg, var(--primary), #0ea5e9);
  color: white; border: none; border-radius: 50px;
  font-size: 1rem; font-weight: 800; cursor: pointer;
  font-family: var(--font-main);
  box-shadow: 0 4px 14px rgba(2,132,199,0.35);
  transition: all 0.2s; min-width: 200px; justify-content: center;
}
.btn-complete:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(2,132,199,0.4); }
.btn-complete:active { transform: scale(0.97); box-shadow: none; }
.btn-complete.done { background: linear-gradient(135deg, var(--accent-green), #059669); box-shadow: 0 4px 14px rgba(16,185,129,0.35); }

.page-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 10px 0 20px; }
.nav-btn {
  display: flex; align-items: center; padding: 12px 16px;
  border-radius: var(--radius-sm); border: 1.5px solid var(--border);
  background: var(--card-bg); font-size: 0.85rem; font-weight: 700;
  color: var(--primary); transition: all 0.15s; line-height: 1.3;
}
.nav-btn:hover { border-color: var(--primary); background: var(--primary-light); text-decoration: none; }
.nav-btn:active { background: var(--primary-light); transform: scale(0.98); }
.nav-btn.nav-prev { justify-content: flex-start; }
.nav-btn.nav-next { justify-content: flex-end; text-align: right; }
.nav-btn.disabled { opacity: 0.4; pointer-events: none; }

/* ---- スポンサーエリア ---- */
.sponsor-area { margin: 28px 0 8px; padding: 20px 16px; border-top: 1px solid var(--border); text-align: center; }
.sponsor-label { font-size: 0.7rem; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 12px; }
.sponsor-inner { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; overflow: hidden; }

/* ---- フッター ---- */
.site-footer { background: #0c1a2e; color: #94a3b8; text-align: center; padding: 24px 16px; font-size: 0.8rem; margin-top: 40px; }
.site-footer a { color: #38bdf8; }

/* ---- スクロールトップ・進捗バー ---- */
.scroll-top-btn {
  position: fixed;
  right: max(16px, env(safe-area-inset-right));
  bottom: max(24px, calc(env(safe-area-inset-bottom) + 16px));
  width: 46px; height: 46px; border-radius: 50%;
  background: var(--primary); color: white; border: none;
  font-size: 1.2rem; cursor: pointer;
  box-shadow: 0 4px 14px rgba(2,132,199,0.4);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transform: translateY(12px) scale(0.9);
  transition: opacity 0.25s, transform 0.25s; z-index: 80;
  font-family: var(--font-main);
}
.scroll-top-btn.show { opacity: 1; pointer-events: auto; transform: translateY(0) scale(1); }
.scroll-top-btn:active { transform: scale(0.92); }
.reading-progress {
  position: fixed; top: 0; left: 0; width: 0%; height: 3px;
  background: linear-gradient(90deg, var(--primary), #38bdf8);
  z-index: 200; transition: width 0.1s linear; pointer-events: none;
}

/* ---- レスポンシブ ---- */
@media (max-width: 480px) {
  .site-hero h1 { font-size: 1.35rem; }
  .page-title { font-size: 1.25rem; }
  .recommend-grid { grid-template-columns: 1fr; }
  .compare-grid { grid-template-columns: 1fr; }
  .page-nav { grid-template-columns: 1fr; }
  .card { padding: 16px; }
  .btn-complete { width: 100%; min-width: 0; }
  .nav-btn { font-size: 0.82rem; padding: 12px 12px; }
  .highlight-box { font-size: 0.88rem; padding: 10px 14px; }
  .check-list li { font-size: 0.88rem; }
  td { padding: 7px 10px; font-size: 0.82rem; }
  th { padding: 7px 10px; font-size: 0.78rem; }
  p { font-size: 0.93rem; }
  .quiz-choices button { font-size: 0.86rem; padding: 11px 14px; }
}
@media (max-width: 360px) {
  .page-title { font-size: 1.15rem; }
  .card { padding: 14px; }
  .section-title { font-size: 0.95rem; }
}
@media (min-width: 600px) {
  .recommend-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (min-width: 768px) {
  .site-hero h1 { font-size: 2rem; }
  .page-title { font-size: 1.75rem; }
  .card { padding: 24px; }
}

/* タッチデバイス向け */
@media (hover: none) and (pointer: coarse) {
  .topic-card:active { background: var(--primary-light); transform: scale(0.99); }
  .nav-btn:active { background: var(--primary-light); }
}

/* ---- アニメーション ---- */
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideDown { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ---- ユーティリティ ---- */
.mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mb-8 { margin-bottom: 8px; }
.text-center { text-align: center; }
.text-sm { font-size: 0.85rem; }
.text-xs { font-size: 0.75rem; }
.font-bold { font-weight: 700; }
.text-muted { color: var(--text-muted); }