/* ===== Claude Code 学習サイト 共通スタイル ===== */
:root {
  --primary: #d97706;
  --primary-dark: #b45309;
  --primary-light: #fef3c7;
  --bg: #faf9f5;
  --surface: #ffffff;
  --text: #1f2937;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --success: #059669;
  --success-light: #d1fae5;
  --info: #2563eb;
  --info-light: #dbeafe;
  --code-bg: #1e293b;
  --code-text: #e2e8f0;
  --radius: 12px;
  --shadow: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic UI", "Meiryo", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.85;
}

/* ===== ヘッダー ===== */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}
.site-logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.site-logo .logo-mark {
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  padding: 2px 8px;
  font-size: .9rem;
}
.global-nav { display: flex; gap: 4px; flex-wrap: wrap; }
.global-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: .85rem;
  padding: 6px 10px;
  border-radius: 8px;
  transition: background .15s;
}
.global-nav a:hover { background: var(--primary-light); color: var(--primary-dark); }
.global-nav a.active { background: var(--primary-light); color: var(--primary-dark); font-weight: 600; }
.global-nav .nav-sep {
  color: var(--text-muted);
  font-size: .72rem;
  align-self: center;
  padding: 0 2px 0 8px;
  border-left: 1px solid var(--border);
  margin-left: 6px;
  white-space: nowrap;
}
.edition-header {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 40px 0 4px;
  flex-wrap: wrap;
}
.edition-header h2 { font-size: 1.3rem; }
.edition-header .edition-badge {
  font-size: .75rem;
  font-weight: 700;
  border-radius: 999px;
  padding: 3px 14px;
}
.edition-badge.basic { background: var(--primary-light); color: var(--primary-dark); }
.edition-badge.advanced { background: var(--info-light); color: var(--info); }
.edition-header .edition-desc { color: var(--text-muted); font-size: .85rem; }
.edition-progress { max-width: 480px; margin-top: 8px; }

/* ===== レイアウト ===== */
.container { max-width: 880px; margin: 0 auto; padding: 32px 20px 80px; }
.container.wide { max-width: 1080px; }

/* ===== ヒーロー ===== */
.hero {
  text-align: center;
  padding: 48px 20px 36px;
}
.hero h1 { font-size: 1.9rem; margin-bottom: 12px; }
.hero p { color: var(--text-muted); max-width: 640px; margin: 0 auto; }
.hero .overall-progress { max-width: 480px; margin: 24px auto 0; }

/* ===== 進捗バー ===== */
.progress-track {
  background: var(--border);
  border-radius: 999px;
  height: 10px;
  overflow: hidden;
}
.progress-fill {
  background: linear-gradient(90deg, var(--primary), #f59e0b);
  height: 100%;
  width: 0;
  border-radius: 999px;
  transition: width .4s ease;
}
.progress-label {
  font-size: .8rem;
  color: var(--text-muted);
  margin-top: 6px;
  text-align: right;
}

/* ===== 章カード（トップページ） ===== */
.chapter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
  margin-top: 24px;
}
.chapter-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  text-decoration: none;
  color: var(--text);
  box-shadow: var(--shadow);
  transition: transform .15s, box-shadow .15s;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.chapter-card:hover { transform: translateY(-2px); box-shadow: 0 4px 12px rgba(0,0,0,.1); }
.chapter-num {
  font-size: .75rem;
  font-weight: 700;
  color: var(--primary-dark);
  background: var(--primary-light);
  border-radius: 999px;
  padding: 2px 12px;
  align-self: flex-start;
}
.chapter-card h3 { font-size: 1.05rem; }
.chapter-card p { font-size: .85rem; color: var(--text-muted); flex: 1; }

/* ===== レッスン ===== */
.lesson {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 28px;
  box-shadow: var(--shadow);
}
.lesson h2 {
  font-size: 1.3rem;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary-light);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.lesson h2 .lesson-id {
  font-size: .75rem;
  background: var(--primary);
  color: #fff;
  border-radius: 6px;
  padding: 2px 8px;
  white-space: nowrap;
}
.lesson h3 { font-size: 1.05rem; margin: 22px 0 10px; color: var(--primary-dark); }
.lesson p { margin-bottom: 12px; }
.lesson ul, .lesson ol { padding-left: 1.4em; margin-bottom: 12px; }
.lesson li { margin-bottom: 4px; }
.lesson table { border-collapse: collapse; width: 100%; margin: 12px 0; font-size: .9rem; }
.lesson th, .lesson td { border: 1px solid var(--border); padding: 8px 12px; text-align: left; }
.lesson th { background: var(--primary-light); }

/* ===== ポイントボックス ===== */
.point-box, .warn-box, .try-box {
  border-radius: var(--radius);
  padding: 16px 18px;
  margin: 16px 0;
  font-size: .92rem;
}
.point-box { background: var(--info-light); border-left: 4px solid var(--info); }
.warn-box { background: #fef2f2; border-left: 4px solid #dc2626; }
.try-box { background: var(--success-light); border-left: 4px solid var(--success); }
.point-box strong:first-child, .warn-box strong:first-child, .try-box strong:first-child { display: block; margin-bottom: 4px; }

/* ===== コード／プロンプト例 ===== */
.code-block {
  position: relative;
  margin: 14px 0;
}
.code-block pre {
  background: var(--code-bg);
  color: var(--code-text);
  border-radius: var(--radius);
  padding: 18px 18px;
  overflow-x: auto;
  font-family: "SFMono-Regular", Consolas, "Courier New", monospace;
  font-size: .85rem;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
}
.code-block .code-label {
  position: absolute;
  top: -10px;
  left: 14px;
  background: var(--primary);
  color: #fff;
  font-size: .7rem;
  border-radius: 6px;
  padding: 2px 10px;
}
.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: rgba(255,255,255,.12);
  color: #e2e8f0;
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 8px;
  padding: 4px 12px;
  font-size: .75rem;
  cursor: pointer;
  transition: background .15s;
}
.copy-btn:hover { background: rgba(255,255,255,.25); }
.copy-btn.copied { background: var(--success); border-color: var(--success); color: #fff; }

code.inline {
  background: #f1f5f9;
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 6px;
  font-size: .85em;
  font-family: Consolas, monospace;
}

/* ===== 完了ボタン ===== */
.done-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 999px;
  padding: 8px 20px;
  font-size: .9rem;
  cursor: pointer;
  margin-top: 10px;
  transition: all .15s;
  font-family: inherit;
}
.done-btn:hover { border-color: var(--success); }
.done-btn.done {
  background: var(--success);
  border-color: var(--success);
  color: #fff;
  font-weight: 600;
}

/* ===== クイズ ===== */
.quiz-section {
  background: var(--surface);
  border: 2px solid var(--primary-light);
  border-radius: var(--radius);
  padding: 28px;
  margin: 36px 0;
}
.quiz-section > h2 { font-size: 1.25rem; margin-bottom: 6px; }
.quiz-q { margin: 22px 0; }
.quiz-q .q-text { font-weight: 600; margin-bottom: 10px; }
.quiz-q label {
  display: block;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  margin-bottom: 8px;
  cursor: pointer;
  font-size: .92rem;
  transition: background .15s;
}
.quiz-q label:hover { background: var(--primary-light); }
.quiz-q label.correct { background: var(--success-light); border-color: var(--success); }
.quiz-q label.wrong { background: #fee2e2; border-color: #dc2626; }
.quiz-q input { margin-right: 8px; }
.quiz-q .explain {
  display: none;
  font-size: .85rem;
  background: var(--info-light);
  border-radius: 8px;
  padding: 10px 14px;
  margin-top: 8px;
}
.quiz-q.answered .explain { display: block; }
.quiz-submit {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 12px 32px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}
.quiz-submit:hover { background: var(--primary-dark); }
.quiz-result { font-size: 1.05rem; font-weight: 700; margin-top: 16px; }

/* ===== 章ナビ ===== */
.chapter-nav {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 40px;
}
.chapter-nav a {
  text-decoration: none;
  color: var(--primary-dark);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 10px 22px;
  font-size: .9rem;
  box-shadow: var(--shadow);
}
.chapter-nav a:hover { background: var(--primary-light); }

/* ===== 章ヘッダー ===== */
.chapter-header { margin-bottom: 28px; }
.chapter-header h1 { font-size: 1.6rem; margin: 8px 0; }
.chapter-header .lead { color: var(--text-muted); }
.chapter-header .chapter-progress { margin-top: 14px; }

/* ===== 目次 ===== */
.toc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 24px;
  margin-bottom: 28px;
  font-size: .92rem;
}
.toc strong { display: block; margin-bottom: 8px; }
.toc ol { padding-left: 1.4em; }
.toc a { color: var(--info); text-decoration: none; }
.toc a:hover { text-decoration: underline; }
.toc .toc-done { color: var(--success); font-weight: 700; margin-left: 6px; }

/* ===== 用語集 ===== */
.glossary-search {
  width: 100%;
  padding: 14px 18px;
  font-size: 1rem;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 24px;
  font-family: inherit;
}
.glossary-search:focus { outline: none; border-color: var(--primary); }
.term {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 12px;
}
.term dt { font-weight: 700; margin-bottom: 4px; }
.term dt .term-en { font-weight: 400; color: var(--text-muted); font-size: .85rem; margin-left: 8px; }
.term dd { font-size: .92rem; color: var(--text); }
.term .term-cat {
  font-size: .7rem;
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: 999px;
  padding: 1px 10px;
  margin-left: 8px;
  vertical-align: middle;
}

/* ===== フッター ===== */
.site-footer {
  text-align: center;
  color: var(--text-muted);
  font-size: .8rem;
  padding: 28px 20px;
  border-top: 1px solid var(--border);
}

@media (max-width: 600px) {
  .hero h1 { font-size: 1.4rem; }
  .lesson { padding: 20px 16px; }
  .header-inner { justify-content: center; }
}