/* ===========================
   席替え・席順くじ — 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）
   =========================== */
: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);
  --danger: #a3302a;
  --seat: #fffdf8;
  --seat-hidden: #efe2cf;
}

@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);
    --danger: #f08a80;
    --seat: #332c24;
    --seat-hidden: #43372a;
  }
}

*, *::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: 820px; 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;
}

/* 入力 */
.field { margin-bottom: 1rem; }
.field label { display: block; font-weight: 600; font-size: 0.95rem; margin-bottom: 0.25rem; }
.field .hint { font-size: 0.8rem; color: var(--muted); margin-bottom: 0.4rem; }
.field input[type="number"], .field input[type="text"], .field select, .rows select, .table-row input, .table-row select, .inline-field select {
  width: 100%;
  max-width: 16rem;
  padding: 0.45rem 0.5rem;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--card);
  color: var(--text);
}

.btn {
  display: inline-block;
  padding: 0.5rem 1.1rem;
  border: none;
  border-radius: 6px;
  background: var(--accent);
  color: var(--card);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
}
.btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* 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; }
.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; }
}

/* ===========================
   席替え・席順くじ
   =========================== */
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.center { text-align: center; }
.hint { font-size: 0.8rem; color: var(--muted); margin: 0.3rem 0; }
.step {
  display: inline-block; min-width: 1.5em; height: 1.5em; line-height: 1.5em; margin-right: 0.4em;
  border-radius: 50%; background: var(--accent); color: var(--card); text-align: center; font-size: 0.85em;
}
h3.sub { font-size: 0.92rem; margin: 1rem 0 0.3rem; }
h3.sub:first-of-type { margin-top: 0; }

.inline-field { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.inline-field select { max-width: 100%; flex: 1 1 10rem; }
.grid-fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr)); gap: 0 1rem; align-items: end; }
.grid-fields .field select, .grid-fields .field input[type="text"] { max-width: none; }
.check { display: flex; gap: 0.5rem; align-items: flex-start; font-size: 0.92rem; margin: 0.35rem 0; cursor: pointer; }
.check input { margin-top: 0.35em; width: 1.05rem; height: 1.05rem; flex: none; accent-color: var(--accent); }

.seg { display: inline-flex; flex-wrap: wrap; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; margin-bottom: 0.9rem; }
.seg label { display: flex; align-items: center; gap: 0.35rem; padding: 0.45rem 0.9rem; cursor: pointer; font-size: 0.92rem; }
.seg label + label { border-left: 1px solid var(--border); }
.seg label:has(input:checked) { background: var(--accent-soft); color: var(--accent); font-weight: 700; }
.seg input { accent-color: var(--accent); }

textarea {
  width: 100%; padding: 0.5rem; font: inherit; font-size: 1rem; line-height: 1.5;
  border: 1px solid var(--border); border-radius: 6px; background: var(--card); color: var(--text); resize: vertical;
}
.field input[type="number"] { max-width: 8rem; }

.btn-row { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; margin: 0.6rem 0; }
.btn { text-decoration: none; min-height: 2.5rem; }
.btn:disabled { opacity: 0.45; cursor: default; }
.btn-sub { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.btn-big { font-size: 1.1rem; padding: 0.75rem 1.6rem; }
.btn-s { font-size: 0.8rem; padding: 0.2rem 0.6rem; min-height: 2rem; }
.btn-x { padding: 0.2rem 0.6rem; min-width: 2.5rem; }

.status { margin: 0.4rem 0; font-size: 0.92rem; }
.status.error { border-left: 4px solid var(--danger); padding: 0.4rem 0.7rem; background: var(--accent-soft); border-radius: 4px; }
.status.error strong { color: var(--danger); }
.warn { color: var(--danger); }
.notes { list-style: none; margin: 0.4rem 0; font-size: 0.82rem; color: var(--muted); }
.notes li + li { margin-top: 0.2rem; }
.notice { border-color: var(--accent); }
.result-head { margin: 0.8rem 0 0.4rem; }
.next-step { margin-top: 0.8rem; padding-top: 0.6rem; border-top: 1px dashed var(--border); font-size: 0.92rem; }
.share-url { width: 100%; padding: 0.4rem; font-size: 0.8rem; border: 1px solid var(--border); border-radius: 6px; background: var(--bg-2); color: var(--text); }

/* 条件の行 */
.cons-block { border-top: 1px solid var(--border); padding: 0.5rem 0; }
.cons-block:first-of-type { margin-top: 0.6rem; }
.cons-block summary { cursor: pointer; font-weight: 600; font-size: 0.95rem; padding: 0.25rem 0; }
.badge:not(:empty) { display: inline-block; margin-left: 0.5em; padding: 0 0.5em; border-radius: 1em; background: var(--accent); color: var(--card); font-size: 0.75rem; }
.rows, .table-list, .history { list-style: none; margin: 0.4rem 0; }
.rows li, .table-row { display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; margin-bottom: 0.45rem; }
.rows select { flex: 1 1 8rem; min-width: 0; }
.table-row input[type="text"] { flex: 1 1 6rem; min-width: 0; }
.table-row select { flex: 0 1 6rem; }
.rows .and { font-size: 0.85rem; }
.history li { display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; font-size: 0.88rem; padding: 0.3rem 0; border-bottom: 1px solid var(--border); }
.history li > span { flex: 1 1 10rem; }

/* 席の表 */
.grid-scroll { overflow-x: auto; margin: 0.4rem 0; }
.seat-grid { --aisle: 0.7rem; min-width: 0; }
.cgrid { display: grid; gap: 0.3rem; }
.seat-grid:not(.big):not(.print) .cgrid { min-width: min(100%, 22rem); }
.seat {
  display: flex; flex-direction: column; align-items: center; justify-content: center; position: relative;
  min-height: 2.9rem; padding: 0.15rem 0.1rem; border: 1px solid var(--border); border-radius: 6px;
  background: var(--seat); color: var(--text); font: inherit; font-size: 0.8rem; text-align: center; overflow: hidden;
}
button.seat { cursor: pointer; }
button.seat:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.seat .no { position: absolute; top: 1px; left: 3px; font-size: 0.6rem; color: var(--muted); line-height: 1.2; }
.seat .nm { font-weight: 700; line-height: 1.15; word-break: break-all; padding-top: 0.45rem; }
.cgrid .seat .nm { font-size: min(0.8rem, calc((100vw - 4.5rem) / var(--cols, 6) / 4.3)); }
.seat .nm.len-m, .cgrid .seat .nm.len-m { font-size: min(0.72rem, calc((100vw - 4.5rem) / var(--cols, 6) / 5.3)); }
.seat .nm.len-l, .cgrid .seat .nm.len-l { font-size: min(0.62rem, calc((100vw - 4.5rem) / var(--cols, 6) / 6.5)); }
.seat.off { background: repeating-linear-gradient(45deg, transparent 0 6px, var(--bg-2) 6px 12px); color: var(--muted); border-style: dashed; }
.seat.off .nm { padding-top: 0; font-weight: 400; }
.seat.void { visibility: hidden; }
.seat.empty .nm { color: var(--muted); font-weight: 400; }
.seat.hidden-seat { background: var(--seat-hidden); }
.seat.hidden-seat .nm { color: var(--muted); }
.seat.selected { outline: 3px solid var(--accent); outline-offset: -1px; }
.swapping .seat.filled { cursor: grab; }
.seat.pop { animation: pop 0.45s ease-out; }
@keyframes pop { 0% { transform: scale(0.6); background: var(--accent-soft); } 60% { transform: scale(1.12); } 100% { transform: scale(1); } }
@media (prefers-reduced-motion: reduce) { .seat.pop { animation: none; } }
.front-bar {
  text-align: center; font-weight: 700; font-size: 0.85rem; letter-spacing: 0.2em;
  background: var(--accent-soft); color: var(--accent); border: 1px solid var(--accent); border-radius: 6px;
  padding: 0.15rem; margin: 0 20% 0.5rem;
}
.front-bar.bottom { margin: 0.5rem 20% 0; }

.tables { display: flex; flex-wrap: wrap; gap: 0.8rem; }
.tbl { border: 1px solid var(--border); border-radius: 8px; padding: 0.4rem; background: var(--bg-2); }
.tbl-name { text-align: center; font-weight: 700; font-size: 0.85rem; color: var(--accent); margin-bottom: 0.2rem; }
.tbl-side { display: grid; grid-template-columns: repeat(var(--n), minmax(3.4rem, 1fr)); gap: 0.25rem; }
.tbl-board { height: 0.9rem; margin: 0.25rem 0; border-radius: 4px; background: var(--border); }

/* 座席表: 置く・入れ替える */
.group-row { align-items: center; margin-bottom: 0.8rem; }
.group-row > label { font-weight: 600; font-size: 0.92rem; margin: 0; }
.group-row select { flex: 1 1 8rem; max-width: 14rem; }
details.mini { font-size: 0.88rem; }
details.mini > summary { cursor: pointer; color: var(--accent); padding: 0.35rem 0; min-height: 2.75rem; display: flex; align-items: center; }
details.mini[open] { flex-basis: 100%; }
#d-reveal { margin-top: 0.6rem; border-top: 1px solid var(--border); }

.tray-head { font-size: 0.82rem; color: var(--muted); margin: 0.2rem 0 0.3rem; }
.tray { display: flex; flex-wrap: wrap; gap: 0.35rem; max-height: 6.6rem; overflow-y: auto; padding: 0.1rem; margin-bottom: 0.4rem; }
.chip {
  font: inherit; font-size: 0.85rem; min-height: 2.75rem; padding: 0.2rem 0.7rem; border-radius: 1.4rem;
  border: 1px solid var(--border); background: var(--seat); color: var(--text); cursor: pointer;
}
.chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--card); font-weight: 700; }
.chip:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.board-msg { min-height: 1.3em; font-size: 0.85rem; color: var(--accent); margin: 0.2rem 0; }
.run-row { margin-top: 0.3rem; }

.board .seat { user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; }
.board .seat.pinned { border: 2px solid var(--accent); background: var(--accent-soft); }
.seat .pin { position: absolute; top: 2px; right: 2px; width: 0.8rem; height: 0.8rem; color: var(--accent); }
.board.arming button.seat, .board.swapping button.seat { cursor: pointer; }
.board.arming button.seat:not(.filled) { border-style: dashed; border-color: var(--accent); }
.seat.dragging { opacity: 0.4; }
.seat.drop-target { outline: 3px dashed var(--accent); outline-offset: -2px; background: var(--accent-soft); }
body.dragging-seat, body.dragging-seat * { cursor: grabbing !important; }
.drag-ghost {
  position: fixed; left: 0; top: 0; z-index: 2147483001; pointer-events: none; margin: -1.4rem 0 0 -2rem;
  padding: 0.35rem 0.7rem; border-radius: 6px; background: var(--accent); color: var(--card); font-weight: 700; font-size: 0.9rem;
  box-shadow: 0 4px 12px var(--shadow); white-space: nowrap;
}

.pairs-box { margin-top: 0.8rem; padding-top: 0.6rem; border-top: 1px solid var(--border); }
.pairs-box h3.sub { margin: 0 0 0.3rem; }
.pair-list { list-style: none; display: flex; flex-wrap: wrap; gap: 0.35rem; margin: 0.3rem 0; }
.pair-list li { display: inline-flex; align-items: center; gap: 0.25rem; border: 1px solid var(--border); border-radius: 6px; padding: 0 0 0 0.5rem; font-size: 0.85rem; background: var(--seat); }
.pair-type { font-size: 0.72rem; font-weight: 700; padding: 0 0.35rem; border-radius: 4px; border: 1px solid currentColor; }
.pair.ng .pair-type { color: var(--danger); }
.pair.want .pair-type { color: var(--accent); }
.pair-list .btn-x { min-height: 2.75rem; min-width: 2.75rem; border: none; }
.scope-row { margin: 0.2rem 0 0; }
.scope-row > label { font-size: 0.85rem; font-weight: 600; margin: 0; }
.scope-row select { flex: 1 1 10rem; }

/* 折りたたみのカード（席の並び・条件・印刷・記録） */
details.card.fold > summary { cursor: pointer; list-style: none; display: flex; flex-wrap: wrap; align-items: baseline; gap: 0 0.6rem; min-height: 2.75rem; }
details.card.fold > summary::-webkit-details-marker { display: none; }
details.card.fold > summary::before { content: '▸'; color: var(--accent); }
details.card.fold[open] > summary::before { content: '▾'; }
details.card.fold > summary h2 { display: inline; border: none; margin: 0; padding: 0; }
details.card.fold[open] > summary { margin-bottom: 0.8rem; border-bottom: 1px solid var(--border); padding-bottom: 0.4rem; }
.fold-state { font-size: 0.8rem; color: var(--muted); }

/* 名前を選ぶ（dialog） */
.dlg {
  width: min(92vw, 30rem); max-height: calc(100dvh - 1.5rem); margin: 0.75rem auto auto; padding: 1rem;
  border: 1px solid var(--border); border-radius: 10px; background: var(--card); color: var(--text); box-shadow: 0 8px 28px var(--shadow);
}
.dlg[open] { display: flex; flex-direction: column; }
.dlg::backdrop { background: rgba(0, 0, 0, 0.35); }
.dlg-title { font-weight: 700; color: var(--accent); }
.dlg-label { display: block; font-weight: 600; font-size: 0.9rem; margin-top: 0.4rem; }
.pick-q { width: 100%; padding: 0.5rem; font-size: 1rem; border: 1px solid var(--border); border-radius: 6px; background: var(--seat); color: var(--text); margin: 0.3rem 0; }
.pick-list { flex: 1 1 auto; min-height: 6rem; max-height: min(40dvh, 16rem); overflow-y: auto; border: 1px solid var(--border); border-radius: 6px; padding: 0.2rem; }
.pick-list:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }
.opt { display: flex; justify-content: space-between; gap: 0.6rem; align-items: center; min-height: 2.75rem; padding: 0.2rem 0.6rem; border-radius: 4px; cursor: pointer; }
.opt + .opt { border-top: 1px solid var(--bg-2); }
.opt:hover, .opt.active { background: var(--accent-soft); }
.opt.active { outline: 2px solid var(--accent); outline-offset: -2px; }
.opt[aria-selected="true"] { font-weight: 700; color: var(--accent); }
.opt[aria-selected="true"] .opt-name::before { content: '✓ '; }
.opt-sub { font-size: 0.78rem; color: var(--muted); flex: none; }
.opt-none { padding: 0.6rem; color: var(--muted); font-size: 0.85rem; }
.pair-sel { min-height: 1.4em; font-size: 0.9rem; }
.dlg-foot { margin-bottom: 0; }

/* 大画面 */
body.stage-open { overflow: hidden; }
.stage {
  position: fixed; inset: 0; z-index: 2147483000; background: var(--bg); color: var(--text);
  display: flex; flex-direction: column; padding: 0.6rem 1rem 0.8rem;
}
.stage-bar { display: flex; flex-wrap: wrap; gap: 0.4rem 1rem; align-items: center; margin-bottom: 0.5rem; }
.stage-bar strong { font-size: 1.15rem; color: var(--accent); }
.stage-btns { margin-left: auto; display: flex; flex-wrap: wrap; gap: 0.4rem; }
#stage-grid { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.seat-grid.big .cgrid { flex: 1; min-height: 0; gap: 0.5vmin; }
.seat-grid.big { --aisle: 2.2vmin; }
.seat-grid.big .seat { min-height: 0; border-width: 2px; }
.seat-grid.big .seat .no { font-size: clamp(0.6rem, 1.4vmin, 1rem); }
.seat-grid.big .seat .nm { padding-top: 0.2em; }
.seat-grid.big .front-bar { font-size: clamp(0.9rem, 2.6vmin, 2rem); }
.seat-grid.big .tables { flex: 1; align-content: center; justify-content: center; overflow: auto; }
.seat-grid.big .tbl-side { grid-template-columns: repeat(var(--n), minmax(6rem, 1fr)); }
.seat-grid.big.party .seat { min-height: 4.5rem; }
.stage-msg { text-align: center; font-size: 0.9rem; color: var(--muted); min-height: 1.2em; }
.stage-msg.error { color: var(--danger); font-size: 1.1rem; }

/* 印刷するもの（画面では出さない） */
.print-area { display: none; }

@page { size: A4 landscape; margin: 0; }
@media print {
  html, body { background: #fff !important; color: #000 !important; margin: 0; padding: 0; }
  body.tool-page > :not(.print-area) { display: none !important; }
  .print-area { display: block; }
  .sheet {
    width: 297mm; height: 209.5mm; padding: 9mm 12mm 7mm; display: flex; flex-direction: column;
    break-after: page; page-break-after: always; overflow: hidden; color: #000; background: #fff;
  }
  .sheet:last-child { break-after: auto; page-break-after: auto; }
  .p-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 3mm; }
  .p-head h1 { font-size: 6mm; }
  .p-head span { font-size: 3.5mm; }
  .p-body { flex: 1; min-height: 0; display: flex; flex-direction: column; --aisle: 5mm; }
  .p-body .cgrid { flex: 1; min-height: 0; gap: 1.6mm; }
  .p-body .seat { min-height: 0; border: 0.35mm solid #333; border-radius: 1.5mm; background: #fff; color: #000; }
  .p-body .seat .no { font-size: 2.4mm; color: #555; top: 0.5mm; left: 1mm; }
  .p-body .seat .nm { padding-top: 1.2mm; }
  .p-body .seat.empty .nm { color: #888; }
  .p-body .front-bar { background: #eee; color: #000; border: 0.4mm solid #333; font-size: 4mm; margin: 0 30% 3mm; padding: 0.8mm; }
  .p-body .front-bar.bottom { margin: 3mm 30% 0; }
  .p-body .tables { gap: 5mm; align-content: flex-start; }
  .p-body .tbl { background: #fff; border: 0.35mm solid #333; padding: 2mm; }
  .p-body .tbl-name { color: #000; font-size: 4mm; }
  .p-body .tbl-side { grid-template-columns: repeat(var(--n), 31mm); gap: 1.2mm; }
  .p-body .tbl-side .seat { height: 16mm; }
  .p-body .tbl-board { background: #ccc; height: 4mm; }
  .p-credit { font-size: 2.6mm; color: #555; text-align: right; margin-top: 2mm; }
  .slip-grid { flex: 1; display: grid; grid-template-columns: repeat(8, 1fr); grid-template-rows: repeat(5, 1fr); }
  .slip { border: 0.3mm dashed #888; display: flex; flex-direction: column; align-items: center; justify-content: center; }
  .slip-no { font-size: 13mm; font-weight: 700; line-height: 1.1; }
  .slip-sub { font-size: 2.8mm; color: #444; }
  ins.adsbygoogle, .google-auto-placed, iframe[id^="aswift"], iframe[id^="google_ads"] { display: none !important; }
}
.stage:focus { outline: none; }
@media (max-width: 480px) {
  .run-row .btn-big { font-size: 1rem; padding: 0.7rem 1rem; }
}