/* =====================================================
   quize.css  —  塩谷さんのクイズ 共通スタイル
   ===================================================== */

*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: 'Segoe UI', 'Noto Sans JP', sans-serif;
  background: #f5f5f5;
  color: #222;
  margin: 0;
  padding: 24px 16px;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,.12);
  padding: 32px;
}

h1 {
  font-size: 1.4rem;
  border-bottom: 2px solid #444;
  padding-bottom: 8px;
  margin-top: 0;
}

/* ---- 本文（プレーンテキスト＋ハンド図） ---- */
pre.content {
  font-family: 'BIZ UDGothic', 'Yu Gothic', 'Meiryo', 'Noto Sans JP', sans-serif;
  font-size: 1rem;
  line-height: 2;
  white-space: pre-wrap;
  overflow-x: auto;
  background: transparent;
  border: none;
  padding: 0;
  margin: 16px 0 0;
}

/* ---- 目次リスト ---- */
.toc {
  list-style: none;
  padding: 0;
  margin: 20px 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 6px;
}

.toc li a {
  display: block;
  padding: 8px 14px;
  background: #f0f4ff;
  border: 1px solid #c0d0ee;
  border-radius: 4px;
  text-decoration: none;
  color: #1a6bb5;
  font-size: 0.9rem;
  text-align: center;
}

.toc li a:hover {
  background: #dce8ff;
  text-decoration: underline;
}

/* ---- ナビゲーション ---- */
.nav {
  margin-top: 32px;
  padding-top: 16px;
  border-top: 1px solid #ddd;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.nav a {
  display: inline-block;
  text-decoration: none;
  color: #1a6bb5;
  font-size: 0.9rem;
}

.nav a:hover { text-decoration: underline; }