/* ===========================
   学習プリントメーカー — yorozu-craft 共通の和紙風の配色
   色はトークン（--bg / --card / --text / --muted / --accent / --border）だけを使う。
   ダークモードは端末の設定に自動で合わせる（prefers-color-scheme。手動切替は付けない）
   プリント（.sheet）は紙なので、ダークモードでも白地・黒字のまま
   =========================== */
:root {
  color-scheme: light dark;
  --bg: #f0ebe0;
  --bg-2: #e6dfd0;
  --card: #faf6ee;
  --text: #3a3025;
  --muted: #6e604f;
  --accent: #8b4513;
  --accent-soft: #f3e6d8;
  --border: #cfc0a0;
  --shadow: rgba(58, 48, 37, 0.12);
  --warn: #9a3412;
  --warn-bg: #fdf0e3;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1814;
    --bg-2: #25201a;
    --card: #2b251e;
    --text: #ece4d6;
    --muted: #b9ab96;
    --accent: #e0a066;
    --accent-soft: #3a2e22;
    --border: #4a3f33;
    --shadow: rgba(0, 0, 0, 0.4);
    --warn: #f4b98a;
    --warn-bg: #3a2a1c;
  }
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
[hidden] { display: none !important; }

body {
  /* README「ツールを追加するとき」9: 端末のフォント。Web フォントは読まない */
  font-family: "Noto Sans JP", "Noto Sans CJK JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

a { color: var(--accent); }

/* ヘッダー */
.app-header {
  text-align: center;
  padding: 1.4rem 1rem 1.1rem;
  background: var(--bg-2);
  border-bottom: 2px solid var(--border);
}
.app-header h1 { font-size: 1.45rem; color: var(--accent); line-height: 1.4; }
.app-header .subtitle { font-size: 0.88rem; color: var(--muted); margin-top: 0.3rem; }

/* レイアウト */
.app-main { max-width: 720px; margin: 0 auto; padding: 1rem; }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.2rem;
  margin-bottom: 1rem;
  box-shadow: 0 2px 8px var(--shadow);
}
.card h2 {
  font-size: 1.02rem;
  color: var(--accent);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.4rem;
  margin-bottom: 0.9rem;
}
.sub-h { font-size: 0.95rem; margin: 1.1rem 0 0.3rem; }
.sub-h:first-of-type { margin-top: 0; }
.badge { font-size: 0.8rem; color: var(--muted); text-align: center; margin-bottom: 0.8rem; }
.center { text-align: center; }
.notice { background: var(--accent-soft); border: 1px solid var(--border); border-radius: 8px; padding: 0.8rem 1rem; margin-bottom: 1rem; font-size: 0.9rem; }
.warn-box { background: var(--warn-bg); color: var(--warn); border-radius: 6px; padding: 0.5rem 0.8rem; font-size: 0.85rem; margin: 0.5rem 0; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* 入力 */
.field { margin-bottom: 1rem; border: none; min-width: 0; }
.field > label, .field legend { display: block; font-weight: 600; font-size: 0.95rem; margin-bottom: 0.3rem; }
.field .hint, .hint { font-size: 0.8rem; color: var(--muted); margin: 0.2rem 0 0.4rem; }
.field input[type="number"], .field input[type="text"], .field select, .inline-row input[type="text"], textarea {
  width: 100%;
  max-width: 22rem;
  padding: 0.45rem 0.5rem;
  font-size: 1rem;
  font-family: inherit;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card);
  color: var(--text);
}
.field input[type="number"] { max-width: 8rem; }
textarea { max-width: 100%; display: block; margin-bottom: 0.4rem; line-height: 1.5; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 1rem; }
.inline { display: flex; align-items: flex-start; gap: 0.4rem; font-size: 0.9rem; font-weight: 400; }
.inline input { margin-top: 0.35rem; flex: none; }
.check-grid { display: grid; gap: 0.2rem; }
.inline-row { display: flex; gap: 0.5rem; flex-wrap: wrap; align-items: center; }
.inline-row input[type="text"] { flex: 1 1 12rem; }

/* 選択肢（ラジオをボタンの見た目に） */
.seg { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.seg label, .chips label {
  display: inline-flex; align-items: center; gap: 0.3rem;
  border: 1px solid var(--border); border-radius: 999px; padding: 0.3rem 0.8rem;
  font-size: 0.9rem; font-weight: 400; cursor: pointer; background: var(--card); margin: 0;
}
.seg label:has(input:checked), .chips label:has(input:checked) { background: var(--accent-soft); border-color: var(--accent); font-weight: 600; }
.seg label:has(input:disabled) { opacity: 0.5; cursor: not-allowed; }
.chips { display: flex; flex-wrap: wrap; gap: 0.35rem; margin-bottom: 0.4rem; }
.chips label { padding: 0.25rem 0.65rem; }

/* 種類のタイル */
.types { display: grid; grid-template-columns: repeat(auto-fill, minmax(8.6rem, 1fr)); gap: 0.5rem; }
.tile {
  position: relative; display: grid; grid-template-columns: 2.2rem 1fr; grid-template-rows: auto auto; column-gap: 0.4rem;
  align-items: center; border: 1px solid var(--border); border-radius: 8px; padding: 0.5rem 0.6rem; cursor: pointer; background: var(--card);
}
.tile input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.tile:has(input:checked) { border-color: var(--accent); background: var(--accent-soft); box-shadow: inset 0 0 0 1px var(--accent); }
.tile:has(input:focus-visible) { outline: 2px solid var(--accent); outline-offset: 2px; }
.t-ico { grid-row: 1 / span 2; font-size: 1.3rem; text-align: center; color: var(--accent); font-weight: 700; }
.t-name { font-weight: 600; font-size: 0.9rem; line-height: 1.3; }
.t-sub { font-size: 0.72rem; color: var(--muted); line-height: 1.3; }

/* 入れたい問題 */
.custom summary { cursor: pointer; font-weight: 600; font-size: 0.95rem; color: var(--accent); }
.custom[open] summary { margin-bottom: 0.4rem; }
.report { font-size: 0.82rem; }
.report .ok { color: var(--muted); }
.report ul { padding-left: 1.2rem; color: var(--warn); }
.report p { margin: 0.2rem 0; }
.report .warn { color: var(--warn); }
.kanji-pick { display: flex; flex-wrap: wrap; gap: 0.25rem; margin-top: 0.5rem; }
.kanji-pick button {
  width: 2.4rem; height: 2.4rem; font-size: 1.2rem; font-family: inherit; border: 1px solid var(--border); border-radius: 6px;
  background: var(--card); color: var(--text); cursor: pointer;
}
.kanji-pick button[aria-pressed="true"] { background: var(--accent); color: var(--card); border-color: var(--accent); }

/* 画面の骨組み（yorozu-plans の docs/SCREEN.md 1.2）: 最小の設定 → 印刷ボタン → 見本 → くわしい設定（折りたたみ） */
.more-state, .opt-state { color: var(--text); font-weight: normal; }
.print-row { margin: 0 0 0.4rem; gap: 0.5rem; }   /* 4 章: ボタンの上下に余白。見出しは視覚的に隠している */
.print-row .btn { min-height: 44px; }
details.card.opt { padding: 0 1.2rem; }
details.card.opt > summary {
  cursor: pointer; display: block; min-height: 44px; padding: 0.6rem 0;
  color: var(--accent); font-weight: 600; font-size: 0.95rem; list-style: none;
}
details.card.opt > summary::-webkit-details-marker { display: none; }
details.card.opt > summary::before { content: '▸'; margin-right: 0.4rem; }
details.card.opt[open] > summary::before { content: '▾'; }
details.card.opt[open] { padding-bottom: 1rem; }
details.card.opt[open] > summary { border-bottom: 1px solid var(--border); margin-bottom: 0.9rem; }
details.card.opt > summary:focus-visible, .custom > summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.custom > summary { min-height: 44px; display: flex; align-items: center; }
.panel > details.custom { margin-bottom: 0.2rem; }
.custom > summary { list-style: none; }
.custom > summary::-webkit-details-marker { display: none; }
.custom > summary::before { content: '▸'; margin-right: 0.4rem; }
.custom[open] > summary::before { content: '▾'; }
.custom > summary > .more-state { margin-left: 0.2rem; }

/* 固定バー（SCREEN.md 0 章の 3・D59）: 上端に 1 行、高さ 44px。下端は AdSense のアンカー広告が使う */
.fixbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50; height: 44px;
  display: flex; align-items: center; justify-content: center; gap: 0.8rem; padding: 0 1rem;
  background: var(--card); border-bottom: 2px solid var(--accent); box-shadow: 0 2px 8px var(--shadow);
}
.fixbar-type { font-size: 0.85rem; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.fixbar .btn { flex: none; padding: 0.2rem 1.1rem; height: 34px; }
#sec-preview { scroll-margin-top: 56px; }

/* ボタン */
.btn {
  display: inline-block;
  padding: 0.55rem 1.1rem;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: var(--accent);
  color: var(--card);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
}
.btn-sub { background: var(--card); color: var(--accent); }
.btn-sm { padding: 0.25rem 0.7rem; font-size: 0.85rem; }
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 0.4rem 0; }
.share-url { width: 100%; font-size: 0.8rem; padding: 0.4rem; margin-top: 0.4rem; border: 1px solid var(--border); border-radius: 6px; background: var(--bg); color: var(--text); }
.preset-list { list-style: none; margin-top: 0.5rem; }
.preset-list li { display: flex; flex-wrap: wrap; align-items: center; gap: 0.4rem; padding: 0.35rem 0; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.preset-list .p-name { flex: 1 1 10rem; font-weight: 600; overflow-wrap: anywhere; }
.preset-list .p-type { font-size: 0.78rem; color: var(--muted); }

/* 読みもの（guide.html） */
.content h3 { font-size: 0.95rem; margin: 1rem 0 0.3rem; }
.content p, .content li { font-size: 0.9rem; }
.content p + p { margin-top: 0.5rem; }
.content ul, .content ol { padding-left: 1.3rem; margin: 0.3rem 0; }
.content table { border-collapse: collapse; width: 100%; font-size: 0.85rem; margin: 0.5rem 0; }
.content th, .content td { border: 1px solid var(--border); padding: 0.35rem 0.5rem; text-align: left; vertical-align: top; }
.content th { background: var(--accent-soft); }
.table-wrap { overflow-x: auto; }
.faq dt { font-weight: 600; margin-top: 0.9rem; font-size: 0.92rem; }
.faq dt::before { content: 'Q. '; color: var(--accent); }
.faq dd { font-size: 0.88rem; color: var(--muted); padding: 0.2rem 0 0.5rem 1.2rem; border-bottom: 1px solid var(--border); }
.info-list { display: grid; grid-template-columns: max-content 1fr; gap: 0.4rem 1.2rem; font-size: 0.9rem; }
.info-list dt { font-weight: 600; }
.info-list dd { color: var(--muted); }
.small { font-size: 0.8rem; color: var(--muted); margin-top: 0.4rem; }

/* フッター */
.app-footer {
  text-align: center;
  padding: 1rem;
  font-size: 0.78rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  margin-top: 0.5rem;
}
.footer-nav ul { list-style: none; display: flex; justify-content: center; flex-wrap: wrap; gap: 0.4rem 1.1rem; margin-bottom: 0.6rem; }
.footer-nav a { color: var(--muted); text-decoration: none; }
.footer-nav a:hover, .footer-nav a[aria-current="page"] { color: var(--accent); }

@media (max-width: 480px) {
  .app-header h1 { font-size: 1.2rem; }
  .card { padding: 1rem 0.9rem; }
  .grid2 { grid-template-columns: 1fr; }
}

/* ===========================
   プリント（A4 縦 210×297mm）。画面では縮小して見本に、印刷では原寸で 1 枚ずつ
   =========================== */
.sheets { --z: 0.4; min-height: 12rem; margin: 0.6rem 0; overflow-x: auto; }   /* zoom の無い古いブラウザでもページを横にはみ出させない */
.sheets .sheet { zoom: var(--z); margin: 0 auto 24px; box-shadow: 0 1px 6px rgba(0, 0, 0, 0.25); }
/* 見本は 1 枚目を縮小で、2 枚目からはさらに小さく横に並べる（SCREEN.md 1.2 の 5「縮小 1 枚」。全部のページは見えるまま） */
.sheets { text-align: center; }
.sheets .sheet + .sheet { display: inline-flex; vertical-align: top; zoom: var(--zs, 0.12); margin: 0 12px 12px; text-align: left; }
.sheets .sheet:first-child { text-align: left; }

.sheet {
  width: 210mm; height: 297mm; overflow: hidden;
  padding: 12mm 12mm 8mm;
  display: flex; flex-direction: column;
  background: #fff; color: #222;
  font-family: "Noto Sans JP", "Noto Sans CJK JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  line-height: 1.4;
  -webkit-print-color-adjust: exact; print-color-adjust: exact;
}
.sh-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 4mm; border-bottom: 0.6mm solid #444; padding-bottom: 2.5mm; }
.sh-title { flex: none; }
.sh-title h3 { font-size: 20pt; white-space: nowrap; font-weight: 700; letter-spacing: 0.05em; }
.sh-sub { font-size: 11pt; color: #444; }
.sh-page { font-size: 9pt; color: #666; }
.ans-badge { display: inline-block; font-size: 12pt; color: #fff; background: #c0392b; border-radius: 2mm; padding: 0.5mm 2.5mm; vertical-align: middle; }
.sh-fields { flex: 1 1 auto; display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 2mm 4mm; font-size: 11pt; }
.f { display: inline-flex; align-items: flex-end; gap: 1mm; white-space: nowrap; }
.f .lbl { font-size: 9pt; color: #444; }
.box { display: inline-block; border-bottom: 0.3mm solid #444; min-width: 10mm; height: 9mm; }
.box.name { min-width: 52mm; position: relative; }
.box.sm { min-width: 12mm; }
.box.xs { min-width: 8mm; }
.name-trace, .name-dark { position: absolute; left: 1.5mm; bottom: 0.5mm; font-size: 16pt; }
.name-trace { color: #b8b8b8; }
.sh-inst { font-size: 12pt; margin: 3mm 0 1mm; }
.sh-body { flex: 1; min-height: 0; padding-top: 3mm; }
.sh-foot { display: flex; justify-content: space-between; font-size: 7.5pt; color: #595959; padding-top: 2mm; }
.ans-fill { color: #c0392b; font-weight: 700; }

/* たし算・ひき算・九九（よこ） */
.ar { list-style: none; display: grid; grid-auto-flow: column; grid-template-columns: 1fr 1fr; column-gap: 10mm; height: 100%; }
.ar li { display: flex; align-items: center; gap: 2mm; border-bottom: 0.2mm dashed #ccc; }
.ar .no { font-size: 9pt; color: #666; width: 9mm; }
.ar .ex { font-variant-numeric: tabular-nums; white-space: nowrap; }
.ar .ansbox { display: inline-flex; align-items: center; justify-content: center; border: 0.3mm solid #555; border-radius: 1.5mm; margin-left: auto; }
.ar-c10 .ex { font-size: 26pt; } .ar-c10 .ansbox { width: 30mm; height: 17mm; font-size: 26pt; }
.ar-c20 .ex { font-size: 19pt; } .ar-c20 .ansbox { width: 24mm; height: 12mm; font-size: 19pt; }
.ar-c30 .ex { font-size: 15pt; } .ar-c30 .ansbox { width: 20mm; height: 9.5mm; font-size: 15pt; }

/* 筆算（たて） */
.hs { list-style: none; display: grid; grid-template-columns: repeat(4, 1fr); gap: 4mm 6mm; align-content: space-evenly; height: 100%; }
.hs li { display: flex; flex-direction: column; align-items: center; }
.hs .no { align-self: flex-start; font-size: 9pt; color: #666; }
.hs-box { display: grid; font-variant-numeric: tabular-nums; }
.hs-box .d { display: flex; align-items: center; justify-content: center; border: 0.15mm dotted #bbb; }
.hs-box .op { font-weight: 700; }
.hs-line { border-top: 0.5mm solid #333; margin: 0.6mm 0; }
.hs-c12 .hs-box .d { width: 11mm; height: 12mm; font-size: 20pt; }
.hs-c16 .hs-box .d { width: 10mm; height: 10.5mm; font-size: 18pt; }
.hs-c20 .hs-box .d { width: 9mm; height: 9mm; font-size: 16pt; }

/* 百ます */
.hy-wrap { display: flex; flex-direction: column; align-items: center; justify-content: space-evenly; height: 100%; }
.hy { border-collapse: collapse; font-variant-numeric: tabular-nums; }
.hy th, .hy td { border: 0.3mm solid #444; text-align: center; }
.hy th { background: #eee; font-weight: 700; }
.hy .corner { background: #ddd; }
.hy-10 th, .hy-10 td { width: 15.5mm; height: 15.5mm; font-size: 17pt; }
.hy-5 th, .hy-5 td { width: 18mm; height: 18mm; font-size: 20pt; }

/* 時計 */
.ck { list-style: none; display: grid; gap: 3mm 6mm; height: 100%; align-content: space-evenly; }
.ck li { display: flex; flex-direction: column; align-items: center; }
.ck .no { align-self: flex-start; font-size: 10pt; color: #555; }
.ck-c4 { grid-template-columns: repeat(2, 1fr); } .ck-c4 .clk { width: 78mm; height: 78mm; }
.ck-c6 { grid-template-columns: repeat(2, 1fr); } .ck-c6 .clk { width: 62mm; height: 62mm; }
.ck-c9 { grid-template-columns: repeat(3, 1fr); } .ck-c9 .clk { width: 50mm; height: 50mm; }
.ck-c12 { grid-template-columns: repeat(3, 1fr); } .ck-c12 .clk { width: 43mm; height: 43mm; }
.ck-label { font-size: 13pt; margin-top: 1mm; white-space: nowrap; }
.ck-c9 .ck-label, .ck-c12 .ck-label { font-size: 11pt; }
.clk-face { fill: #fff; stroke: #333; stroke-width: 2.5; }
.clk .tk { stroke: #555; stroke-width: 1; }
.clk .tk-b { stroke: #222; stroke-width: 2.4; }
.clk .num { font-size: 21px; font-weight: 700; text-anchor: middle; fill: #222; font-family: inherit; }
.clk .gnum { font-size: 9px; text-anchor: middle; fill: #888; font-family: inherit; }
.clk .hand-h { stroke: #222; stroke-width: 7; stroke-linecap: round; }
.clk .hand-m { stroke: #222; stroke-width: 3; stroke-linecap: round; }
.clk .hand-ans { stroke: #c0392b; }
.clk-dot { fill: #222; }

/* なぞり書き（マス目と十字の点線）。端末の教科書体を先に使い、無いときだけ fonts/ の Klee One を読む
   （サイトの README 9 の例外。かなと漢字を分けてあり、使う字のファイルだけが読まれる） */
@font-face {
  font-family: "YC Klee One";
  src: url("fonts/klee-kana.woff2") format("woff2");
  unicode-range: U+20-7E, U+3001-3002, U+3005-3006, U+300C-300D, U+3041-3096, U+309D-309E, U+30A1-30FE, U+FF01, U+FF08-FF09, U+FF1F;
  font-display: swap;
}
@font-face {
  font-family: "YC Klee One";
  src: url("fonts/klee-kanji.woff2") format("woff2");
  unicode-range: U+4E00-9FFF;
  font-display: swap;
}
.tr {
  display: flex; flex-direction: column; align-items: center;
  font-family: "UD デジタル 教科書体 NK-R", "UD Digi Kyokasho NK-R", "UD デジタル 教科書体 N-R", "UD Digi Kyokasho N-R", "YuKyokasho", "Klee", "Klee One", "YC Klee One",
    "Noto Sans JP", "Noto Sans CJK JP", "Hiragino Sans", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
}
.tr-row { display: flex; }
.tr-row + .tr-row { margin-top: -0.3mm; }
.tc {
  width: var(--cell); height: var(--cell); font-size: calc(var(--cell) * 0.72); line-height: var(--cell);
  text-align: center; border: 0.3mm solid #666; margin-left: -0.3mm; position: relative;
  /* 十字の点線（SVG。縮小しても線の太さが変わらない） */
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 100 100' preserveAspectRatio='none'%3E%3Cpath d='M50 0V100M0 50H100' fill='none' stroke='%23b4b4b4' stroke-width='0.8' stroke-dasharray='3 3' vector-effect='non-scaling-stroke'/%3E%3C/svg%3E") center / 100% 100% no-repeat;
}
.tc-dark { color: #111; }
.tc-light { color: #c4c4c4; }
.tc-gap { background: none; border-color: #bbb; }

/* 迷路 */
.mz-wrap { height: 100%; display: flex; align-items: center; justify-content: center; }
.mz { width: 100%; height: 100%; }
.mz-wall { fill: none; stroke: #222; stroke-linecap: square; }
.mz-path { fill: none; stroke: #c0392b; stroke-linejoin: round; stroke-linecap: round; opacity: 0.85; }
.mz-lbl { font-size: 5.5px; font-weight: 700; fill: #222; font-family: inherit; }
.mz-lbl.end { text-anchor: end; }

/* ===========================
   印刷: プリントだけを原寸で。広告・画面の部品は出さない
   =========================== */
@page { size: A4 portrait; margin: 0; }
@media print {
  html, body { background: #fff !important; margin: 0; padding: 0; }
  body.tool-page > :not(main) { display: none !important; }
  body.tool-page main > :not(#sec-preview) { display: none !important; }
  #sec-preview > :not(#sheets) { display: none !important; }
  body.tool-page main, #sec-preview { max-width: none; margin: 0; padding: 0; border: none; box-shadow: none; background: none; }
  #sheets > :not(.sheet) { display: none !important; }
  .sheets { min-height: 0; margin: 0; overflow: visible; }
  .sheets { text-align: left; }
  .sheets .sheet, .sheets .sheet + .sheet { display: flex; zoom: 1; margin: 0; box-shadow: none; break-after: page; page-break-after: always; height: 296.6mm; }
  .sheets .sheet:last-child { break-after: auto; page-break-after: auto; }
  .fixbar { display: none !important; }
  /* 使い方ページを印刷するときも、広告は出さない */
  ins.adsbygoogle, .google-auto-placed, iframe[id^="aswift"], iframe[id^="google_ads"] { display: none !important; }
}

/* 使い方ページの折りたたみ（WRITING.md の基準で、補足・一覧はここに入れる） */
.content details { margin: 0.4rem 0; }
.content summary { cursor: pointer; color: var(--accent); font-size: 0.88rem; }
.content details[open] summary { margin-bottom: 0.3rem; }
.content h4 { font-size: 0.9rem; margin: 0.8rem 0 0.2rem; }