:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1d2330;
  --muted: #5d6676;
  --line: #dde1e7;
  --accent: #1f6feb;
  --accent-soft: #e7f0ff;
  --danger: #c62828;
  --short: #d32f2f;
  --go: #c62828;
  --gi: #2e7d32;
  --shun: #1565c0;
  --shin: #ad1457;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12151b;
    --card: #1b2029;
    --text: #e6e9ef;
    --muted: #9aa3b2;
    --line: #2d3442;
    --accent: #4c8dff;
    --accent-soft: #1d2a42;
    --danger: #ef5350;
    --short: #ff6b6b;
    --go: #ef6b6b;
    --gi: #66bb6a;
    --shun: #64a8f0;
    --shin: #f06292;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}
.site-header, main, .site-footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px;
}
.site-header { padding-top: calc(16px + env(safe-area-inset-top)); }
h1 { font-size: 26px; margin: 8px 0 4px; }
h2 { font-size: 18px; margin: 0 0 8px; display: flex; align-items: center; gap: 8px; }
.example { margin: 0 0 12px; text-align: center; }
.example figcaption { font-size: 13px; font-weight: 600; color: var(--muted); margin-bottom: 4px; }
.example img { display: block; width: 160px; max-width: 100%; height: auto; margin: 0 auto; border-radius: 8px; border: 1px solid var(--line); }
@media (max-width: 480px) {
  .example img { width: 56px; } /* スマホでは縦長の画像が場所を取りすぎないよう小さく */
}
.lead, .hint { color: var(--muted); margin: 0 0 12px; font-size: 14px; }
.step {
  display: inline-grid; place-items: center;
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent); color: #fff; font-size: 14px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  margin: 16px 0;
}
.section-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.badge { font-size: 13px; color: var(--accent); }

.button {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 0 16px;
  border: 1px solid var(--line); border-radius: 10px;
  background: var(--card); color: var(--text);
  font: inherit; cursor: pointer;
}
.button.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; width: 100%; }
.button.small { min-height: 36px; padding: 0 12px; font-size: 14px; }
.button.danger { color: var(--danger); }
.toolbar { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.status { margin: 12px 0 0; font-size: 14px; }
.notice {
  margin: 12px 0 0;
  padding: 8px 12px;
  border-left: 3px solid #e0a100;
  background: rgba(224, 161, 0, 0.1);
  border-radius: 6px;
  font-size: 13px;
}
.empty { color: var(--muted); font-size: 14px; text-align: center; padding: 16px 0; margin: 0; }

.player-list { display: grid; gap: 12px; }
.player {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  display: grid;
  gap: 8px;
}
.player.checked { border-color: var(--accent); background: var(--accent-soft); }
.pick { display: flex; align-items: center; gap: 8px; font-weight: 600; }
.pick-input { width: 22px; height: 22px; accent-color: var(--accent); }
.thumb { width: 100%; height: auto; border-radius: 6px; display: block; background: #000; }
.rows { display: grid; gap: 6px; }
.row { display: grid; grid-template-columns: 20px 1fr 96px; gap: 8px; align-items: center; }
.row-no { color: var(--muted); font-size: 13px; text-align: center; }
select, input[type="number"] {
  font: inherit;
  font-size: 16px; /* iOSで入力時に拡大されないように */
  min-height: 40px;
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
  color: var(--text);
  width: 100%;
}
select.kei { font-weight: 600; }
.kei-剛 { color: var(--go); }
.kei-技 { color: var(--gi); }
.kei-俊 { color: var(--shun); }
.kei-心 { color: var(--shin); }
.player-foot { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.player-foot label { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.player-foot select { width: auto; }

.table-scroll { overflow-x: auto; }
.material-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.material-table th, .material-table td { border-bottom: 1px solid var(--line); padding: 6px 4px; text-align: center; }
.material-table tr > th:first-child { text-align: left; white-space: nowrap; font-weight: 500; }
.material-table input { min-height: 36px; text-align: right; padding: 4px 6px; min-width: 48px; }
.kei-head { font-weight: 700; }
.common-cell { border-right: 1px solid var(--line); }
.owned-tools { margin: 12px 0 0; align-items: center; }
.owned-file { flex: 1 1 auto; }
.rows-label { margin: 4px 0 0; font-size: 13px; font-weight: 600; color: var(--muted); }
.target-label { font-size: 16px !important; font-weight: 600; }
.player-foot .target-label select { font-size: 17px; font-weight: 600; min-height: 44px; padding: 4px 12px; }
.owned-thumb { margin: 8px 0 12px; }
.need { font-weight: 600; font-variant-numeric: tabular-nums; }
.bal { font-size: 12px; color: var(--muted); font-variant-numeric: tabular-nums; }
.bal.short, .short { color: var(--short); font-weight: 600; }
.coin { margin: 0 0 8px; }
.sub-head { font-size: 15px; margin: 16px 0 4px; }

/* 必要な素材（計算結果）の枠：出力であることが一目でわかるように */
.card.result {
  border: 2px solid var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 4px 14px rgba(31, 111, 235, 0.18);
}
.card.result h2 { font-size: 20px; }
.result-tag {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
}
.card.result .table-scroll { background: var(--card); border-radius: 8px; padding: 4px 6px; }
.coin strong { font-size: 22px; font-variant-numeric: tabular-nums; }
.coin-detail { display: block; font-size: 14px; color: var(--muted); font-variant-numeric: tabular-nums; }
.coin-detail .bal { font-size: 14px; }
.coin-input { display: flex; align-items: center; gap: 12px; margin-top: 12px; font-weight: 600; font-size: 14px; }
.coin-input input { max-width: 200px; text-align: right; }

.site-footer { color: var(--muted); font-size: 12px; padding-bottom: calc(24px + env(safe-area-inset-bottom)); }
.site-footer p { margin: 4px 0; }
.site-footer .contact { font-size: 14px; color: var(--text); margin-bottom: 8px; }
.site-footer a { color: var(--accent); }

/* 動作確認機種 */
.devices p { margin: 0 0 8px; font-size: 14px; }
.devices ul { margin: 0 0 8px; padding-left: 1.4em; font-size: 14px; }
.devices .hint { margin: 0; }
.devices a { color: var(--accent); }

/* プライバシーポリシーのページ */
.back { margin: 0 0 8px; font-size: 14px; }
.back a, .policy a { color: var(--accent); }
.policy p { margin: 0 0 8px; font-size: 15px; }
.policy p:last-child { margin-bottom: 0; }
.policy ul { margin: 0 0 8px; padding-left: 1.4em; font-size: 15px; }
.policy li { margin: 4px 0; }
.policy ol { margin: 0 0 12px; padding-left: 1.4em; font-size: 15px; }
.policy ol li { margin: 0 0 10px; }
.guide-table { margin-bottom: 12px; white-space: nowrap; font-variant-numeric: tabular-nums; }
.guide-table thead th { font-weight: 600; font-size: 13px; }
.guide-table .total th, .guide-table .total td { font-weight: 700; }
.faq { margin: 0; font-size: 15px; }
.faq dt { font-weight: 700; margin-top: 12px; }
.faq dt:first-child { margin-top: 0; }
.faq dd { margin: 4px 0 0; }
.guide-link { margin: 0 0 12px; font-size: 14px; }
.guide-link a { color: var(--accent); font-weight: 600; }