/* N3A Weekly — 学習計画（週予定）
 * 保護者目線で見やすく・おしゃれで・毎週見るのが楽しみになる見た目
 * CSS変数で色・フォント・レイアウトを完全固定（Excelの崩れを構造的に排除）
 */

/* タイトル・見出し用：UD ゴシック（読みやすさ重視）— Mac/Windows どちらも OS 標準で当たるが、
   Web フォント版（BIZ UDPGothic）も用意して OS 差を最小化 */
@import url('https://fonts.googleapis.com/css2?family=BIZ+UDPGothic:wght@400;700&display=swap');

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

:root {
  /* ----- base palette: 紙＋季節感 (Grade継承) ----- */
  --bg: #fff8ed;
  --bg-soft: #fffdf6;
  --surface: #ffffff;
  --surface-2: #fbf3e3;
  --ink: #2d2a26;
  --ink-dim: #6e6a64;
  --ink-soft: #94908a;
  --line: #ede2cd;
  --line-soft: #f5ecd8;
  --line-cell: #e4d9c1;

  /* ----- 場所色トークン (★印付きセル等) ----- */
  --place-n3a: #ffffff;
  --place-exchange: #e3eef9;       /* 交流 = 薄い水色 */
  --place-exchange-strong: #b8d8f0;
  --place-noclass: #e5f0dc;        /* 授業なし = 薄緑 */
  --place-dismissed: #f4ecd9;      /* 下校 = 薄ベージュ */
  --place-holiday: #f0eee9;        /* 休業 = グレー */
  --place-nakayoshi: #ffe4d0;      /* なかよし体育 = 火曜ヘッダーと同じ淡ピーチ（社長要望 2026-05-15） */
  --place-nakayoshi-strong: #f5b88a;
  --star-mark: #c66b4a;            /* ★マーク = テラコッタ（PartD 2026-05-14） */

  /* ----- 学年カラー (Excel継承を意味だけ維持、トーンはパステルに) ----- */
  --grade-1-c1: #6e9fcf;
  --grade-1-c2: #92bce3;
  --grade-1-soft: #d8e6f3;
  --grade-3-c1: #7eb056;
  --grade-3-c2: #a4c87a;
  --grade-3-soft: #dde9ce;
  --grade-5-c1: #d97e4e;
  --grade-5-c2: #ed9a6b;
  --grade-5-soft: #f7d8c3;
  --grade-6-c1: #8d6f53;
  --grade-6-c2: #a98770;
  --grade-6-soft: #e3d4c2;
  --tab-zaishitsu-c1: #b39ddb;
  --tab-zaishitsu-c2: #c8b6e6;
  --tab-tsushin-c1: #e89aa9;
  --tab-tsushin-c2: #f0b6c1;

  /* ----- 週の地図 3情報ソース（黄=本社MD / 緑=教師用メモ / 青=交流学級） -----
     色相環で120°ずつ離した三相パレット。Gradeアクセントと衝突しないよう彩度・明度を調整 */
  --src-honsha-c1: #c79a3a;
  --src-honsha-bg-from: #fffdf5;
  --src-honsha-bg-to:   #faecc8;
  --src-honsha-border:  #e0c585;
  --src-teacher-c1: #5a8a6e;
  --src-teacher-bg-from: #f4f9f4;
  --src-teacher-bg-to:   #dfeede;
  --src-teacher-border:  #a8c8b3;
  --src-koryu-c1: #5a7ab8;
  --src-koryu-bg-from: #f3f7fc;
  --src-koryu-bg-to:   #d8e3f3;
  --src-koryu-border:  #abc1de;

  /* ----- 曜日カラー (Excel継承、彩度を落としてパステル化) ----- */
  --weekday-mon: #fff4d6;
  --weekday-tue: #ffe4d0;
  --weekday-wed: #dceaf7;
  --weekday-thu: #e3efd6;
  --weekday-fri: #fbdde0;

  /* ----- 状態 ----- */
  --ok: #4ea96b;
  --warn: #d99a2c;
  --danger: #d65454;
  --edited: #b569d0;
  --info: #4a90c8;

  /* ----- レイアウト ----- */
  --radius: 14px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --shadow-soft: 0 6px 20px rgba(45,42,38,.08);
  --shadow-pop: 0 12px 32px rgba(45,42,38,.18);
  --shadow-inset: inset 0 -2px 0 rgba(0,0,0,.06);
  --safe-bottom: env(safe-area-inset-bottom, 0px);

  /* ----- フォント（候補C ハイブリッド：見出し=UDゴシック / 本文・コマ=教科書体） ----- */
  /* タイトル・見出し：UD ゴシック（OS 標準＋Web フォント保険） */
  --font-title: 'BIZ UDPGothic', 'Hiragino Sans', 'Yu Gothic UI', 'Yu Gothic',
                'Meiryo UI', 'Meiryo', sans-serif;
  /* 本文・コマセル：教科書体（Mac=ヒラギノ教科書ProN / Win=UDデジタル教科書体 NK）
     Windowsはフォント名が日本語（全角＋スペースあり）で登録されているため、
     英語名だけだと拾えない端末がある。日本語名を最優先で記載してヒット率を上げる。
     NK ファミリーを指定することで R(400)/B(700) を自動で切り替え可能。 */
  --font-body: 'Hiragino Kyokasho ProN', 'YuKyokasho',
               'UD デジタル 教科書体 NK', 'UDデジタル教科書体 NK',
               'UD デジタル 教科書体 NK-R', 'UDデジタル教科書体 NK-R',
               'UD デジタル 教科書体 N', 'UDデジタル教科書体 N',
               'UD Digi Kyokasho NK-R', 'UD Digi Kyokasho N-R',
               'BIZ UDPGothic', 'Hiragino Sans', 'Yu Gothic', serif;
  /* 1年生用は廃止して全学年統一（旧 Klee One は不要、エイリアスとして残す） */
  --font-hand: var(--font-body);
}

html, body {
  height: 100%;
  font-family: var(--font-body);
  font-weight: 400;
  background: var(--bg);
  color: var(--ink);
  -webkit-tap-highlight-color: transparent;
  font-feature-settings: "palt" 1;
}
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; }
.hidden { display: none !important; }

/* ====================================================
 *   左右フローティング学年切替パネル
 *   画面が広いとき（≥1400px）だけ表示。印刷時は非表示。
 * ==================================================== */
.floating-grade-switcher {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  display: none;
  flex-direction: column;
  gap: 10px;
  z-index: 50;
  padding: 8px;
  background: rgba(255, 251, 240, 0.88);
  border-radius: 16px;
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 12px rgba(0,0,0,.08);
}
.floating-grade-switcher.floating-left  { left: 12px; }
.floating-grade-switcher.floating-right { right: 12px; }

.floating-grade-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 2px solid transparent;
  background: #fff;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 13px;
  color: var(--ink);
  letter-spacing: 0.02em;
  transition: transform .12s, box-shadow .12s, background .12s, color .12s;
  display: grid;
  place-items: center;
}
.floating-grade-btn.grade-1 { border-color: var(--grade-1-c1); color: var(--grade-1-c1); }
.floating-grade-btn.grade-3 { border-color: var(--grade-3-c1); color: var(--grade-3-c1); }
.floating-grade-btn.grade-5 { border-color: var(--grade-5-c1); color: var(--grade-5-c1); }
.floating-grade-btn.grade-6 { border-color: var(--grade-6-c1); color: var(--grade-6-c1); }
.floating-grade-btn:hover {
  transform: scale(1.07);
  box-shadow: 0 3px 8px rgba(0,0,0,.12);
}
.floating-grade-btn.grade-1.active { background: var(--grade-1-c1); color: #fff; }
.floating-grade-btn.grade-3.active { background: var(--grade-3-c1); color: #fff; }
.floating-grade-btn.grade-5.active { background: var(--grade-5-c1); color: #fff; }
.floating-grade-btn.grade-6.active { background: var(--grade-6-c1); color: #fff; }

/* 週切替ボタン（前週／次週） */
.floating-week-btn {
  width: 52px;
  min-height: 40px;
  border-radius: 10px;
  border: 1.5px solid #b8b0a4;
  background: #fff;
  font-family: var(--font-title);
  font-size: 11px;
  font-weight: 700;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1px;
  cursor: pointer;
  transition: transform .12s, box-shadow .12s, background .12s;
  padding: 3px 0;
}
.floating-week-btn .week-arrow {
  font-size: 13px;
  line-height: 1;
}
.floating-week-btn .week-label {
  font-size: 10px;
  line-height: 1;
  letter-spacing: 0.02em;
}
.floating-week-btn:hover {
  background: #fff8e9;
  box-shadow: 0 3px 8px rgba(0,0,0,.1);
  transform: scale(1.04);
}

@media (min-width: 1400px) {
  .floating-grade-switcher { display: flex; }
  /* 左側はソーススイッチャー専有にするため、学年スイッチャー左を非表示
     （学年は右側 .floating-right だけで操作） */
  .floating-grade-switcher.floating-left { display: none !important; }
}

/* ====================================================
 *   3情報ソース 切替タブ（横並び・大型・常時表示）
 *   左から 本社 → 交流 → メモ。1/3ずつ画面幅を占有。
 *   2026-05-14 floating パネル撤去、これに一本化。
 * ==================================================== */
.source-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
  padding: 8px;
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  margin-bottom: 10px;
}
.source-tab {
  background: #fff;
  border: 2px solid transparent;
  padding: 14px 12px;
  border-radius: 14px;
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  cursor: pointer;
  transition: background .18s, color .18s, border-color .18s, box-shadow .18s, transform .12s;
  letter-spacing: 0.04em;
  min-height: 56px;
}
.source-tab-icon { font-size: 22px; line-height: 1; }
.source-tab-label { line-height: 1; }
.source-tab:hover {
  transform: translateY(-1px);
  box-shadow: 0 3px 8px rgba(0,0,0,.10);
}
/* 非アクティブの薄い色付き枠（誰がどの色か一目でわかる） */
.source-tab.src-honsha  { border-color: var(--src-honsha-c2);  color: var(--src-honsha-c1); }
.source-tab.src-koryu   { border-color: var(--src-koryu-c2);   color: var(--src-koryu-c1); }
.source-tab.src-teacher { border-color: var(--src-teacher-c2); color: var(--src-teacher-c1); }
/* アクティブ：強く強調（塗り＋影＋少し大きく） */
.source-tab.src-honsha.active {
  background: var(--src-honsha-c1);  color: #fff; border-color: var(--src-honsha-c1);
  box-shadow: 0 6px 16px rgba(0,0,0,0.15), 0 0 0 4px rgba(255,255,255,0.4) inset;
  transform: translateY(-2px) scale(1.03);
}
.source-tab.src-koryu.active {
  background: var(--src-koryu-c1);   color: #fff; border-color: var(--src-koryu-c1);
  box-shadow: 0 6px 16px rgba(0,0,0,0.15), 0 0 0 4px rgba(255,255,255,0.4) inset;
  transform: translateY(-2px) scale(1.03);
}
.source-tab.src-teacher.active {
  background: var(--src-teacher-c1); color: #fff; border-color: var(--src-teacher-c1);
  box-shadow: 0 6px 16px rgba(0,0,0,0.15), 0 0 0 4px rgba(255,255,255,0.4) inset;
  transform: translateY(-2px) scale(1.03);
}
/* 切替時の pop アニメーション（switchSource で .pop クラスが一時付与される） */
.source-tab.pop {
  animation: sourceTabPop .35s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes sourceTabPop {
  0%   { transform: translateY(-2px) scale(1.03); }
  35%  { transform: translateY(-3px) scale(1.10); }
  100% { transform: translateY(-2px) scale(1.03); }
}

/* ====================================================
 *   3情報ソース 排他切替（.is-active のブロックだけ可視）
 *   3ブロックを同一グリッドセルに重ね、セル高さ＝3ブロック最大値に自動追従
 *   → タブ切替で本社↔交流↔メモを行き来しても枠の高さがブレない
 * ==================================================== */
.extras-stack {
  display: grid;
  grid-template-areas: "stack";
}
.extras-stack > .extras-block {
  grid-area: stack;
  visibility: hidden;
  pointer-events: none;
}
.extras-stack > .extras-block.is-active {
  visibility: visible;
  pointer-events: auto;
}

#app {
  max-width: 1280px;
  margin: 0 auto;
  padding: 12px 16px calc(40px + var(--safe-bottom));
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ====================================================
 *   Header
 * ==================================================== */

.w-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 4px;
  flex-wrap: wrap;
}
.back-link {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--surface);
  color: var(--ink-dim);
  text-decoration: none;
  font-size: 18px;
  box-shadow: var(--shadow-soft);
  transition: transform .15s, color .15s;
}
.back-link:hover { transform: translateX(-2px); color: var(--ink); }
.brand {
  display: flex; align-items: baseline; gap: 8px;
  flex: 1; min-width: 0;
  font-family: var(--font-title);
}
.brand-mark {
  background: linear-gradient(135deg, #4a90c8 0%, #7e5cb0 100%);
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  padding: 4px 9px;
  border-radius: 8px;
  letter-spacing: .5px;
  font-family: var(--font-title);
}
.brand-name { font-size: 24px; font-weight: 700; letter-spacing: -.5px; font-family: var(--font-title); }
.brand-sub  { font-size: 13px; color: var(--ink-dim); white-space: nowrap; }
.header-actions {
  display: flex; align-items: center; gap: 8px;
  flex-wrap: wrap;
}
.week-picker {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--surface);
  padding: 4px 10px;
  border-radius: 999px;
  box-shadow: var(--shadow-soft);
}
.week-label {
  font-family: var(--font-title);
  font-weight: 500;
  font-size: 14px;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
  min-width: 80px;
  text-align: center;
}
.header-btn {
  background: var(--surface);
  border: none;
  color: var(--ink);
  font-size: 13px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 999px;
  box-shadow: var(--shadow-soft);
  transition: transform .12s, box-shadow .12s;
  font-family: var(--font-title);
}
.header-btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-pop); }
.header-btn.ghost { background: transparent; box-shadow: none; padding: 6px 10px; }
.header-btn.ghost:hover { background: var(--surface); box-shadow: var(--shadow-soft); }
.header-btn.highlight {
  background: linear-gradient(135deg, #ffb366, #ff8a47);
  color: #fff;
}

/* PartT/2026-05-15: プライマリアクション「📥 Dailyに反映」（緑塗り）
   保存（オレンジ）と並ぶ確定操作。色で操作種別を識別。 */
.header-btn.action-daily {
  background: linear-gradient(135deg, #5fa05f, #4a8a4a);
  color: #fff;
  font-weight: 600;
}
.header-btn.action-daily:hover {
  background: linear-gradient(135deg, #4a8a4a, #3a703a);
}
.header-btn.action-daily:disabled {
  opacity: 0.55;
  cursor: wait;
  transform: none;
}

/* PartT/2026-05-15: 学年別PDF一括出力ボタン（本社サーバ専用、青系プライマリ）
   緑（Daily反映・本社版）と区別するため青で塗る。 */
.header-btn.action-print-grades {
  background: linear-gradient(135deg, #5e90c8, #4670a8);
  color: #fff;
  font-weight: 600;
}
.header-btn.action-print-grades:hover {
  background: linear-gradient(135deg, #4670a8, #355a90);
}
.header-btn.action-print-grades:disabled {
  opacity: 0.55;
  cursor: wait;
  transform: none;
}

/* 「🖥 本社版」リンク — Cloudflare 公開版にだけ表示。localhost にジャンプ。
   PartT/2026-05-15: KV経由の保存・Daily反映が公開版でも動くようになったため、
   ナビ補助レベルに格下げ（緑枠のみ・塗りなし）。AI抽出・学級通信生成など本社専用機能用。 */
.header-btn--local {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  background: transparent;
  border: 2px solid #5fa05f;
  color: #4a8a4a;
  font-weight: 600;
  padding: 6px 12px;
  box-shadow: none;
  cursor: pointer;
}
.header-btn--local:hover {
  background: rgba(95, 160, 95, 0.08);
  border-color: #4a8a4a;
  color: #3a703a;
  box-shadow: none;
}
@media print {
  .header-btn--local { display: none !important; }
}

/* ====================================================
 *   Highlight Strip (今週のハイライト)
 * ==================================================== */

.highlight-strip {
  background: var(--bg-soft);
  border-radius: var(--radius);
  padding: 14px 20px;
  display: flex;
  gap: 16px;
  align-items: center;
  font-family: var(--font-title);
  font-weight: 500;
  font-size: 14px;
  box-shadow: var(--shadow-soft);
  border-left: 4px solid var(--grade-current-color, #b8d8f0);
  transition: border-color .3s;
}
.highlight-leader {
  font-weight: 700;
  color: var(--ink);
  font-size: 13px;
  white-space: nowrap;
  background: var(--surface-2);
  padding: 4px 10px;
  border-radius: 999px;
}
.highlight-items {
  color: var(--ink-dim);
  font-weight: 500;
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
}
.highlight-item::before {
  content: "・";
  color: var(--ink-soft);
  margin-right: 2px;
}
.highlight-item:first-child::before { content: ""; margin-right: 0; }

/* ====================================================
 *   Grade Tabs
 * ==================================================== */

.grade-tabs {
  display: flex;
  gap: 6px;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 6px;
  box-shadow: var(--shadow-soft);
  flex-wrap: wrap;
}
.grade-tab {
  flex: 1;
  min-width: 90px;
  background: transparent;
  border: none;
  padding: 14px 16px;
  border-radius: 10px;
  color: var(--ink-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .18s, color .18s, transform .12s;
  font-family: var(--font-title);
}
.grade-tab:hover { transform: translateY(-1px); }
.tab-label { font-size: 15px; font-weight: 700; letter-spacing: 0.02em; }
.grade-tab.active { color: var(--ink); }
.grade-tab.grade-1.active { background: var(--grade-1-soft); }
.grade-tab.grade-3.active { background: var(--grade-3-soft); }
.grade-tab.grade-5.active { background: var(--grade-5-soft); }
.grade-tab.grade-6.active { background: var(--grade-6-soft); }
.grade-tab.tab-zaishitsu.active { background: rgba(179,157,219,.18); }
.grade-tab.tab-tsushin.active { background: rgba(232,154,169,.18); }

/* ====================================================
 *   Grade Panel (学年セクション)
 * ==================================================== */

.grade-panels {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.grade-panel {
  display: none;
  background: var(--surface);
  border-radius: var(--radius);
  padding: 0;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}
.grade-panel.active { display: block; }

/* ----- 学年カラー帯 ----- */
.grade-banner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 24px;
  background: linear-gradient(135deg, var(--banner-c1) 0%, var(--banner-c2) 100%);
  color: #fff;
  box-shadow: var(--shadow-inset);
  font-family: var(--font-title);
}
.grade-banner-title {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.grade-banner-week {
  margin-left: 10px;  /* 直前の「☑ 複数編集」ボタンと並べる */
  font-size: 14px;
  font-weight: 500;
  background: rgba(255,255,255,.22);
  padding: 6px 14px;
  border-radius: 999px;
  font-variant-numeric: tabular-nums;
}
/* btn-bulk-mode が無い banner（在室マトリクス・保護者おたより等）では週ラベルを右端まで押し出す */
.grade-banner > .grade-banner-week:nth-child(2) { margin-left: auto; }

/* Undo/Redo ボタン群（PartG） */
.grade-banner-history {
  margin-left: auto;
  display: flex;
  gap: 6px;
}
.grade-banner-history .btn-undo,
.grade-banner-history .btn-redo {
  background: rgba(255,255,255,.18);
  color: #fff;
  border: 1px solid rgba(255,255,255,.32);
  border-radius: 6px;
  padding: 6px 12px;
  font-size: 13px;
  font-family: var(--font-title);
  font-weight: 600;
  cursor: pointer;
  transition: background .12s ease, transform .12s ease;
}
.grade-banner-history .btn-undo:hover:not([disabled]),
.grade-banner-history .btn-redo:hover:not([disabled]) {
  background: rgba(255,255,255,.32);
  transform: translateY(-1px);
}
.grade-banner-history .btn-undo:active:not([disabled]),
.grade-banner-history .btn-redo:active:not([disabled]) { transform: translateY(0); }
.grade-banner-history .btn-undo[disabled],
.grade-banner-history .btn-redo[disabled] {
  opacity: 0.35;
  cursor: not-allowed;
}
.grade-1 .grade-banner { --banner-c1: var(--grade-1-c1); --banner-c2: var(--grade-1-c2); }
.grade-3 .grade-banner { --banner-c1: var(--grade-3-c1); --banner-c2: var(--grade-3-c2); }
.grade-5 .grade-banner { --banner-c1: var(--grade-5-c1); --banner-c2: var(--grade-5-c2); }
.grade-6 .grade-banner { --banner-c1: var(--grade-6-c1); --banner-c2: var(--grade-6-c2); }

/* ----- 1年は手書き風フォント ----- */
.grade-1 .grade-body { font-family: var(--font-hand); }
.grade-1 .grade-body .cell-subject { font-family: var(--font-hand); font-weight: 600; }

/* ----- Week Grid ----- */
.grade-body {
  padding: 12px;
  font-family: var(--font-body);
}
.week-grid {
  display: grid;
  grid-template-columns: 76px repeat(5, minmax(0, 1fr));
  gap: 4px;
  background: var(--line-soft);
  border-radius: var(--radius-sm);
  padding: 4px;
}
.cell-head, .cell-row-label {
  font-family: var(--font-title);
  background: var(--bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 13px;
  border-radius: var(--radius-xs);
  padding: 6px 4px;
  color: var(--ink);
}
.cell-row-label { font-size: 12px; color: var(--ink-dim); }
.cell-row-label .row-num { font-size: 16px; font-weight: 700; color: var(--ink); margin-right: 0; }
.cell-row-label.is-period .row-num {
  background: var(--surface-2);
  width: 26px; height: 26px;
  border-radius: 50%;
  display: inline-grid;
  place-items: center;
  margin-right: 0;
}

/* 曜日ヘッダ */
.cell-head.weekday-mon { background: var(--weekday-mon); }
.cell-head.weekday-tue { background: var(--weekday-tue); }
.cell-head.weekday-wed { background: var(--weekday-wed); }
.cell-head.weekday-thu { background: var(--weekday-thu); }
.cell-head.weekday-fri { background: var(--weekday-fri); }

.cell-head .head-weekday { font-size: 14px; }
.cell-head .head-date {
  font-size: 11px;
  font-weight: 500;
  color: var(--ink-dim);
  margin-left: 4px;
  font-variant-numeric: tabular-nums;
}
.cell-head.is-holiday {
  background: #d8eac0;
  color: #4a6b35;
}
.cell-head.is-holiday .head-date { color: #6a8c4a; }

/* 行事・朝・持ち物・下校 行 */
.cell-meta {
  background: var(--surface);
  padding: 6px 8px;
  border-radius: var(--radius-xs);
  font-size: 12px;
  color: var(--ink);
  line-height: 1.5;
  white-space: pre-wrap;
  min-height: 28px;
}
.cell-row-label.is-meta {
  background: var(--surface-2);
  font-size: 11px;
  color: var(--ink-dim);
}

/* コマセル */
.cell-period {
  background: var(--place-n3a);
  border-radius: var(--radius-xs);
  padding: 6px 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-height: 76px;
  cursor: pointer;
  border: 1px solid var(--line-cell);
  position: relative;
  transition: box-shadow .15s, transform .12s;
}
.cell-period:hover { box-shadow: var(--shadow-soft); transform: translateY(-1px); }
/* PartT/2026-05-15: 色は subject の基本所在地ベース、★は独立した位置マーカー（社長要望）。
   国語・算数・自立・なかよし体育 → 白（基本なかよし所属）
   それ以外 → 青（基本交流所属）
   ★は色を変えない（その日の実際の所在地は別問題で、Daily 側で表示） */
.cell-period[data-default-place="exchange"] {
  background: var(--place-exchange);
  border-color: var(--place-exchange-strong);
}
.cell-period[data-default-place="n3a"] {
  background: var(--place-n3a);
}
.cell-period[data-place="noclass"] { background: var(--place-noclass); }
.cell-period[data-place="dismissed"] { background: var(--place-dismissed); }
.cell-period[data-place="holiday"] { background: var(--place-holiday); }
.cell-period[data-place="nakayoshi"] {
  background: var(--place-nakayoshi);
  border-color: var(--place-nakayoshi-strong);
}
.cell-period--shorter-day {
  background: #d9ecc6;
  border-color: #a8c98a;
}

/* 警告マーク（火3コンフリクト・入力漏れ・下校コンフリクト） */
.cell-warn-mark {
  position: absolute;
  top: 2px;
  right: 4px;
  font-size: 11px;
  font-weight: 700;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  cursor: help;
  z-index: 2;
}
.cell-warn-mark--nakayoshi {
  background: #fff4d4;
  color: #b86b1a;
  border: 1px solid #f0a020;
}
.cell-warn-mark--missing {
  background: #ffe5d0;
  color: #c85a1a;
  border: 1px solid #e88044;
}
.cell-warn-mark--dismissal {
  background: #ffd7d0;
  color: #c0392b;
  border: 1px solid #c0392b;
}
.cell-period--nakayoshi-conflict {
  outline: 1px dashed #f0a020;
  outline-offset: -2px;
}
.cell-period--content-missing {
  background: linear-gradient(135deg, transparent 70%, rgba(255, 200, 150, 0.4) 100%);
}

/* ⚡ なかよし体育に変えるショートカットボタン（編集モーダル先頭） */
.nakayoshi-shortcut-btn {
  font-size: 11px;
  font-weight: 700;
  padding: 6px 10px;
  border: 1px solid #f0a020;
  background: #fff4d4;
  color: #b86b1a;
  border-radius: 6px;
  cursor: pointer;
  margin-bottom: 4px;
}
.nakayoshi-shortcut-btn:hover {
  background: #f0a020;
  color: #fff;
}
/* 一括編集モーダル用は大きめに目立たせる（PartC） */
.nakayoshi-shortcut-btn--bulk {
  display: block;
  width: 100%;
  font-size: 14px;
  padding: 10px 14px;
  margin-bottom: 10px;
  background: linear-gradient(135deg, #f0a020 0%, #c5a458 100%);
  color: #fff;
  border-color: #c5a458;
  box-shadow: 0 2px 8px rgba(240,160,32,0.25);
}
.nakayoshi-shortcut-btn--bulk:hover {
  filter: brightness(1.05);
  transform: translateY(-1px);
}

/* 交流マスは背景色＋★だけで識別（右上の角折れ三角は廃止：捲れて見えるため） */
/* なかよし体育セルも背景色だけで識別 */

.cell-subject {
  font-weight: 600;  /* PartU: 教科書体が 700 持たないケース対応で 600 に下げる */
  font-size: var(--auto-subj-pt, 13px);
  color: var(--ink);
  text-align: center;
  /* 全学年で教科書体に統一（PartT 2026-05-15）— subject/content のフォント混在を解消 */
  font-family: var(--font-body);
  border-bottom: 1px dashed rgba(45,42,38,.12);
  padding-bottom: 2px;
  line-height: 1.3;
  word-break: break-word;
  overflow-wrap: break-word;
}
.cell-subject .star {
  color: var(--star-mark);
  margin-left: 2px;
  font-size: 0.85em;
}
.cell-content {
  font-size: var(--auto-cont-pt, 11px);
  color: var(--ink);
  line-height: 1.45;
  flex: 1;
  white-space: pre-wrap;
  word-break: break-word;
  overflow-wrap: break-word;
}
.cell-teacher {
  font-size: var(--auto-tea-pt, 10px);
  color: var(--ink-soft);
  margin-top: auto;
  text-align: right;
  font-weight: 500;
}

/* ----- 祝日列（1日まるごと縦書きセル） ----- */
.cell-holiday-column {
  grid-row: span 10; /* 行事＋朝＋6限＋下校＋持ち物=10行 */
  background: linear-gradient(180deg, #e7f3d4 0%, #d8eac0 100%);
  border-radius: var(--radius-sm);
  border: 1px solid #c4d9a6;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 20px 8px;
  position: relative;
  cursor: default;
}
.cell-holiday-column .holiday-name {
  writing-mode: vertical-rl;
  text-orientation: upright;
  /* PartU: 大ラベルも教科書体に統一 */
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 28px;
  letter-spacing: 0.18em;
  color: #4a6b35;
  line-height: 1.3;
}
/* PartU 2026-05-15: 学習計画パネル内の大ラベル群を全部教科書体に統一
   （表/裏どちらにも適用。ボタン等は個別指定が残るので影響限定的） */
.grade-panel-front .grade-banner-title,
.grade-panel-front .grade-banner-week,
.grade-panel-front .cell-row-label,
.grade-panel-front .cell-head,
.grade-panel-front .cell-holiday-column .holiday-badge {
  font-family: var(--font-body) !important;
}
.cell-holiday-column .holiday-badge {
  position: absolute;
  top: 12px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  font-weight: 700;
  color: #6a8c4a;
  background: rgba(255,255,255,.75);
  padding: 3px 10px;
  border-radius: 999px;
  font-family: var(--font-title);
  letter-spacing: 0.06em;
}
.cell-holiday-column .holiday-symbol {
  position: absolute;
  bottom: 14px;
  font-size: 20px;
  opacity: 0.5;
}
/* 1年生は手書き風フォント */
.grade-1 .cell-holiday-column .holiday-name {
  font-family: var(--font-hand);
}

/* ----- 学校独自休業日（運動会代休等）は別配色（青系） ----- */
.cell-holiday-column[data-holiday-type="school"] {
  background: linear-gradient(180deg, #ddeaf3 0%, #c5d8e8 100%);
  border-color: #a8c0d2;
}
.cell-holiday-column[data-holiday-type="school"] .holiday-name {
  color: #3a5878;
}
.cell-holiday-column[data-holiday-type="school"] .holiday-badge {
  color: #4a7095;
}

/* ----- 学校行事日（dayLabel）— 行事の種類ごとに色を選べる ----- */
.cell-holiday-column[data-day-label-kind="event"] {
  cursor: pointer;
  transition: filter .12s, transform .12s;
}
.cell-holiday-column[data-day-label-kind="event"]:hover {
  filter: brightness(1.04);
}
/* 行事 — 薄緑（標準） */
.cell-holiday-column[data-day-label-kind="event"][data-event-color="green"] {
  background: linear-gradient(180deg, #e2f0d0 0%, #c8e0a5 100%);
  border-color: #a8c98a;
}
.cell-holiday-column[data-day-label-kind="event"][data-event-color="green"] .holiday-name { color: #3f5e2c; }
.cell-holiday-column[data-day-label-kind="event"][data-event-color="green"] .holiday-badge { color: #4a6b35; }
/* 行事 — 薄紫（特別行事） */
.cell-holiday-column[data-day-label-kind="event"][data-event-color="purple"] {
  background: linear-gradient(180deg, #ebe3f5 0%, #d4c4ec 100%);
  border-color: #b8a3d8;
}
.cell-holiday-column[data-day-label-kind="event"][data-event-color="purple"] .holiday-name { color: #4a2e7a; }
.cell-holiday-column[data-day-label-kind="event"][data-event-color="purple"] .holiday-badge { color: #5a3e8a; }
/* 行事 — 薄オレンジ（活発） */
.cell-holiday-column[data-day-label-kind="event"][data-event-color="orange"] {
  background: linear-gradient(180deg, #fde5ce 0%, #f9c89b 100%);
  border-color: #e8b074;
}
.cell-holiday-column[data-day-label-kind="event"][data-event-color="orange"] .holiday-name { color: #8a4317; }
.cell-holiday-column[data-day-label-kind="event"][data-event-color="orange"] .holiday-badge { color: #9c5320; }
/* 行事 — 薄ピンク（華やか） */
.cell-holiday-column[data-day-label-kind="event"][data-event-color="pink"] {
  background: linear-gradient(180deg, #fce0e6 0%, #f5c0cc 100%);
  border-color: #e8a8b8;
}
.cell-holiday-column[data-day-label-kind="event"][data-event-color="pink"] .holiday-name { color: #8a2747; }
.cell-holiday-column[data-day-label-kind="event"][data-event-color="pink"] .holiday-badge { color: #9c3757; }
/* 行事 — 薄青（節目） */
.cell-holiday-column[data-day-label-kind="event"][data-event-color="blue"] {
  background: linear-gradient(180deg, #d8e6f0 0%, #b8d0e4 100%);
  border-color: #94b5cf;
}
.cell-holiday-column[data-day-label-kind="event"][data-event-color="blue"] .holiday-name { color: #2c4868; }
.cell-holiday-column[data-day-label-kind="event"][data-event-color="blue"] .holiday-badge { color: #3a5878; }

/* ============ 行事編集フローティングモーダル ============ */
.events-editor-modal {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-title);
}
.events-editor-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(50, 40, 30, 0.45);
  backdrop-filter: blur(2px);
}
.events-editor-card {
  position: relative;
  width: 92vw;
  max-width: 540px;
  max-height: 86vh;
  background: #fffdf6;
  border-radius: 12px;
  box-shadow: 0 12px 48px rgba(0,0,0,0.3);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.events-editor-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line-soft, #e8dcc4);
  background: linear-gradient(135deg, #fff8e9, #fff);
}
.events-editor-head h2 {
  font-size: 15px;
  font-weight: 800;
  color: var(--ink);
  margin: 0;
}
.events-editor-close {
  background: none;
  border: none;
  font-size: 22px;
  color: var(--ink-dim);
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
}
.events-editor-close:hover { background: rgba(0,0,0,0.06); }
.events-editor-body {
  flex: 1;
  overflow-y: auto;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.events-editor-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-dim);
  margin-bottom: 2px;
}
.events-editor-body .events-edit-textarea {
  width: 100%;
  font-size: 13px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-family: var(--font-body);
  resize: vertical;
  min-height: 80px;
}
.events-editor-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 16px;
  border-top: 1px solid var(--line-soft, #e8dcc4);
  background: #fff8e9;
}
.events-editor-foot .events-edit-hint {
  font-size: 10.5px;
  color: var(--ink-dim);
}
.events-editor-foot .events-edit-actions {
  display: flex;
  gap: 8px;
}
.events-editor-foot .events-edit-actions button {
  font-size: 13px;
  font-weight: 700;
  padding: 7px 16px;
  border: none;
  border-radius: 999px;
  cursor: pointer;
}
.events-editor-foot .events-edit-actions button[data-action="cancel"] {
  background: #eee;
  color: var(--ink);
}
.events-editor-foot .events-edit-actions button[data-action="apply"] {
  background: #ffb366;
  color: #fff;
}
.events-editor-foot .events-edit-actions button[data-action="apply"]:hover {
  filter: brightness(1.05);
}

/* 編集モーダル内の大ラベル入力欄（縦並び・フル幅） */
.events-edit-section--label {
  border-top: 1px dashed var(--line-soft, #e8dcc4);
  padding-top: 12px;
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.events-edit-section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.events-edit-section--label .events-edit-sub {
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-dim);
  margin: 0;
}
.events-edit-day-label-remove {
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border: 1px solid #d65454;
  background: #fff;
  color: #d65454;
  border-radius: 999px;
  cursor: pointer;
  white-space: nowrap;
  font-family: var(--font-title);
}
.events-edit-day-label-remove:hover {
  background: #d65454;
  color: #fff;
}
.events-edit-day-label-name {
  width: 100%;
  font-size: 13px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  font-family: var(--font-body);
  box-sizing: border-box;
}
.events-edit-day-label-color {
  width: 100%;
  font-size: 13px;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  font-family: var(--font-body);
  box-sizing: border-box;
}
.events-edit-hint--label {
  font-size: 10.5px;
  color: var(--ink-soft);
  line-height: 1.5;
}

/* セル編集モード */
.cell-period.editing {
  background: #fffbef !important;
  border-color: #ffb366;
  box-shadow: 0 0 0 3px rgba(255,179,102,.25);
  z-index: 2;
}
.cell-edit-form {
  display: grid;
  gap: 4px;
}
.cell-edit-form input,
.cell-edit-form select,
.cell-edit-form textarea {
  font-size: 12px;
  padding: 4px 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  background: #fff;
  color: var(--ink);
  font-family: var(--font-body);
}
.cell-edit-form textarea { resize: vertical; min-height: 36px; }
.cell-edit-form .star-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: var(--ink-dim);
}
/* PartW 2026-05-16: 3ボタン横並びアクション群 */
.cell-edit-form .cell-edit-actions {
  display: flex;
  gap: 4px;
  align-items: stretch;
  margin-top: 2px;
}
.cell-edit-form .cell-edit-action-btn {
  flex: 1;
  min-width: 0;
  padding: 5px 4px;
  font-size: 11px;
  font-family: var(--font-body);
  font-weight: 700;
  letter-spacing: 0.02em;
  border-radius: 4px;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  writing-mode: horizontal-tb !important;
  text-orientation: mixed;
  line-height: 1.2;
  transition: background 0.12s ease, opacity 0.12s ease;
}
.cell-edit-form .cell-edit-action-btn--danger {
  background: #fff;
  border-color: #e0a0a0;
  color: #c66b4a;
}
.cell-edit-form .cell-edit-action-btn--danger:hover { background: #ffeeea; }
.cell-edit-form .cell-edit-action-btn--cancel {
  background: #eee;
  color: #555;
  border-color: transparent;
}
.cell-edit-form .cell-edit-action-btn--cancel:hover { background: #ddd; }
.cell-edit-form .cell-edit-action-btn--apply {
  background: #ffb366;
  color: #fff;
  border-color: #ffb366;
}
.cell-edit-form .cell-edit-action-btn--apply:hover { background: #ff9933; }

/* ----- 持ち物・行事・末尾メッセージ ----- */
.grade-extras {
  padding: 14px 12px 4px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
/* 大ブロック：本社 / 交流学級 */
.extras-block {
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  border: 1.5px solid var(--line, #ede2cd);
}
.extras-block--honsha {
  background: linear-gradient(180deg, var(--src-honsha-bg-from) 0%, var(--src-honsha-bg-to) 100%);
  border-color: var(--src-honsha-border);
}
.extras-block--exchange {
  background: linear-gradient(180deg, var(--src-koryu-bg-from) 0%, var(--src-koryu-bg-to) 100%);
  border-color: var(--src-koryu-border);
}
.extras-block--teacher {
  background: linear-gradient(180deg, var(--src-teacher-bg-from) 0%, var(--src-teacher-bg-to) 100%);
  border-color: var(--src-teacher-border);
}
.extras-block-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px dashed currentColor;
}
.extras-block--honsha .extras-block-head   { color: var(--src-honsha-c1); }
.extras-block--exchange .extras-block-head { color: var(--src-koryu-c1); }
.extras-block--teacher .extras-block-head  { color: var(--src-teacher-c1); }
.extras-block-icon {
  font-size: 18px;
}
.extras-block-title {
  font-family: var(--font-title);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}
.extras-block-sub {
  font-size: 11px;
  color: var(--ink-dim);
}
.extras-block-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
/* main: 主役セクションを横並びで月火水木金の高さを揃える（subgrid）
   h3 + 5日 = 6行を親に明示し、子の .grade-extras-section / .extras-day-list で行を委譲 */
.extras-block-body--main {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: repeat(6, auto);
  gap: 4px 16px;
}
.extras-block-body--main > .grade-extras-section {
  display: grid;
  grid-template-rows: subgrid;
  grid-row: span 6;
  gap: 0;
}
.extras-block-body--main .extras-day-list {
  display: contents;
}
/* sub: メッセージ等の補助セクションは全幅1列で main の下に積む */
.extras-block-body--sub {
  display: block;
}
@media (max-width: 960px) {
  .extras-block-body--main { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .extras-block-body--main { grid-template-columns: 1fr; }
  .extras-block-body--main { grid-template-rows: auto; }
  .extras-block-body--main > .grade-extras-section { display: block; }
  .extras-block-body--main .extras-day-list { display: flex; flex-direction: column; gap: 6px; }
}
@supports not (grid-template-rows: subgrid) {
  .extras-block-body--main { grid-template-rows: auto; }
  .extras-block-body--main > .grade-extras-section { display: block; }
  .extras-block-body--main .extras-day-list { display: flex; flex-direction: column; gap: 6px; }
  .extras-block-body--main .extras-day { min-height: 48px; }
}
.grade-extras-section {
  background: var(--bg-soft);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
}
.grade-extras-section h3 {
  font-family: var(--font-title);
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-dim);
  margin-bottom: 4px;
  letter-spacing: 0.04em;
}
.grade-extras-section .notes-list {
  font-size: 12px;
  line-height: 1.55;
  color: var(--ink);
  white-space: pre-wrap;
}
/* 曜日ラベル付き日別ブロック（連絡・行事 / 持ち物） */
.extras-day-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.extras-day {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 8px;
  align-items: start;
  padding: 4px 0;
  border-bottom: 1px dashed var(--line-soft, #f5ecd8);
}
.extras-day:last-child { border-bottom: none; }
.extras-day-head {
  display: flex;
  flex-direction: column;
  align-items: center;
  font-family: var(--font-title);
  background: var(--surface-2, #fbf3e3);
  border-radius: 4px;
  padding: 2px 4px;
}
.extras-day-wday {
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
}
.extras-day-wday.weekday-mon { background: var(--weekday-mon); }
.extras-day-wday.weekday-tue { background: var(--weekday-tue); }
.extras-day-wday.weekday-wed { background: var(--weekday-wed); }
.extras-day-wday.weekday-thu { background: var(--weekday-thu); }
.extras-day-wday.weekday-fri { background: var(--weekday-fri); }
.extras-day-wday {
  width: 100%;
  text-align: center;
  border-radius: 4px;
  padding: 2px 0;
}
.extras-day-md {
  font-size: 10px;
  color: var(--ink-dim);
  margin-top: 2px;
  font-variant-numeric: tabular-nums;
}
.extras-day-body {
  font-size: 12px;
  line-height: 1.55;
  color: var(--ink);
  font-family: var(--font-body);
}
.extras-line {
  margin-bottom: 2px;
  white-space: pre-wrap;
}
.extras-empty {
  font-size: 11px;
  color: var(--ink-dim);
  font-style: italic;
}

/* 交流学級セクション（青系）— 親 .extras-block--exchange 内で使用 */
.grade-extras-section--exchange {
  background: rgba(255, 255, 255, 0.55);
  border-left: 3px solid var(--src-koryu-c1);
}
.grade-extras-section--exchange h3 {
  color: var(--src-koryu-c1);
}

/* 教師用メモセクション（緑系）— 親 .extras-block--teacher 内で使用 */
.grade-extras-section--teacher {
  background: rgba(255, 255, 255, 0.55);
  border-left: 3px solid var(--src-teacher-c1);
}
.grade-extras-section--teacher h3 {
  color: var(--src-teacher-c1);
}

.closing-message-wrap {
  margin: 12px;
  background: linear-gradient(135deg, #fffdf6 0%, #fef3df 100%);
  border-left: 4px solid var(--banner-c1, #d97e4e);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  /* PartU: 全学年で教科書体に統一（旧 var(--font-title) は 1年だけ var(--font-hand) で上書きされていた） */
  font-family: var(--font-body);
  font-weight: 500;
  color: var(--ink);
  font-size: 13px;
  line-height: 1.7;
  box-shadow: var(--shadow-soft);
  position: relative;
}
/* textarea/input 内も教科書体に揃える（user agent の上書き防止） */
.closing-message-textarea,
.closing-message-text { font-family: var(--font-body); }
.grade-1 .closing-message-wrap { border-color: var(--grade-1-c1); }
.grade-3 .closing-message-wrap { border-color: var(--grade-3-c1); }
.grade-5 .closing-message-wrap { border-color: var(--grade-5-c1); }
.grade-6 .closing-message-wrap { border-color: var(--grade-6-c1); }

/* ----- 凡例 ----- */
.legend-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 8px 14px 14px;
  font-size: 11px;
  color: var(--ink-soft);
  font-weight: 500;
}
.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.legend-chip {
  width: 14px; height: 14px;
  border-radius: 3px;
  border: 1px solid var(--line-cell);
  display: inline-block;
}
.legend-chip.legend-n3a { background: var(--place-n3a); }
.legend-chip.legend-exchange { background: var(--place-exchange); }
.legend-chip.legend-noclass { background: var(--place-noclass); }
.legend-chip.legend-dismissed { background: var(--place-dismissed); }
.legend-chip.legend-nakayoshi { background: var(--place-nakayoshi); }

/* ====================================================
 *   担任動線サマリー（在室アラート）
 * ==================================================== */

.zaishitsu-banner {
  background: linear-gradient(135deg, var(--tab-zaishitsu-c1) 0%, var(--tab-zaishitsu-c2) 100%);
}

.zaishitsu-intro {
  padding: 14px 20px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line-soft);
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--ink);
  line-height: 1.7;
}
.zaishitsu-intro-text { display: block; }
.zaishitsu-tag {
  display: inline-block;
  font-family: var(--font-title);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  margin: 0 4px;
  white-space: nowrap;
}
.zaishitsu-tag.tag-red { background: #f4d4d2; color: #b85450; }
.zaishitsu-tag.tag-orange { background: #fde8cf; color: #c97847; }
.zaishitsu-tag.tag-white { background: var(--surface); color: var(--ink-dim); border: 1px solid var(--line); }
.zaishitsu-tag.tag-free { background: var(--surface-2); color: var(--ink-soft); }

.zaishitsu-body {
  padding: 18px 20px 12px;
  font-family: var(--font-body);
}

.doukousen-table {
  display: grid;
  grid-template-columns: 80px repeat(5, 1fr);
  gap: 4px;
  background: var(--line-soft);
  padding: 4px;
  border-radius: var(--radius-sm);
}
.doukousen-head, .doukousen-day-head, .doukousen-period-label, .doukousen-cell {
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xs);
  font-family: var(--font-title);
}
.doukousen-head.corner {
  font-size: 12px;
  font-weight: 700;
  color: var(--ink-dim);
  padding: 8px;
}
.doukousen-day-head {
  flex-direction: column;
  padding: 8px;
  font-weight: 700;
  gap: 1px;
}
.doukousen-day-head.weekday-mon { background: var(--weekday-mon); }
.doukousen-day-head.weekday-tue { background: var(--weekday-tue); }
.doukousen-day-head.weekday-wed { background: var(--weekday-wed); }
.doukousen-day-head.weekday-thu { background: var(--weekday-thu); }
.doukousen-day-head.weekday-fri { background: var(--weekday-fri); }
.doukousen-day-head.is-holiday {
  background: #d8eac0;
  color: #4a6b35;
}
.doukousen-day-head .dd-weekday { font-size: 16px; }
.doukousen-day-head .dd-date {
  font-size: 11px;
  color: var(--ink-dim);
  font-weight: 500;
  font-variant-numeric: tabular-nums;
}
.doukousen-day-head .dd-hol {
  font-size: 10px;
  color: #6a8c4a;
  font-weight: 500;
}

.doukousen-period-label {
  flex-direction: column;
  background: var(--bg-soft);
  padding: 14px 6px;
  font-weight: 700;
  gap: 0;
}
.doukousen-period-label .dpl-num {
  font-size: 22px;
  color: var(--ink);
  line-height: 1;
}
.doukousen-period-label .dpl-sub {
  font-size: 11px;
  color: var(--ink-dim);
  font-weight: 500;
  margin-top: 2px;
}

.doukousen-cell {
  flex-direction: column;
  padding: 12px 6px;
  font-weight: 700;
  font-size: 13px;
  position: relative;
  border: 2px solid transparent;
  min-height: 56px;
}
.doukousen-cell .dc-grades {
  font-family: var(--font-title);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.02em;
  text-align: center;
  line-height: 1.3;
}
.doukousen-cell .dc-count {
  position: absolute;
  top: 4px; right: 8px;
  font-size: 10px;
  color: var(--ink-dim);
  font-weight: 700;
  background: rgba(255,255,255,.7);
  padding: 1px 6px;
  border-radius: 999px;
}
.doukousen-cell .dc-free {
  color: var(--ink-soft);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.08em;
}

.doukousen-cell.alert-red {
  background: linear-gradient(135deg, #c66968 0%, #b85450 100%);
  color: #fff;
  border-color: #a04241;
  box-shadow: 0 2px 8px rgba(184,84,80,.25);
}
.doukousen-cell.alert-red .dc-grades { color: #fff; }
.doukousen-cell.alert-red .dc-count {
  color: #b85450;
  background: rgba(255,255,255,.92);
}
.doukousen-cell.alert-orange {
  background: linear-gradient(135deg, #e8b96a 0%, #d99a2c 100%);
  color: #fff;
  border-color: #b88420;
  box-shadow: 0 2px 8px rgba(217,154,44,.22);
}
.doukousen-cell.alert-orange .dc-grades { color: #fff; }
.doukousen-cell.alert-orange .dc-count {
  color: #b88420;
  background: rgba(255,255,255,.92);
}
.doukousen-cell.alert-white {
  background: var(--surface);
  color: var(--ink);
  border-color: var(--line);
}
.doukousen-cell.alert-white .dc-grades { color: var(--ink); }
.doukousen-cell.alert-free {
  background: var(--surface-2);
  color: var(--ink-soft);
  border-color: var(--line-soft);
}
.doukousen-cell.is-holiday {
  background: linear-gradient(180deg, #e7f3d4 0%, #d8eac0 100%);
  color: #6a8c4a;
  font-size: 18px;
}

.doukousen-summary {
  display: flex;
  gap: 16px;
  padding: 14px 8px 4px;
  flex-wrap: wrap;
  font-family: var(--font-title);
  font-size: 13px;
}
.ds-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  font-weight: 500;
}
.ds-item strong {
  font-variant-numeric: tabular-nums;
  font-size: 18px;
  font-weight: 800;
}
.ds-item.ds-red { background: #f4d4d2; color: #b85450; }
.ds-item.ds-orange { background: #fde8cf; color: #c97847; }
.ds-item.ds-free { background: var(--surface-2); color: var(--ink-dim); }

@media (max-width: 900px) {
  .doukousen-table { grid-template-columns: 60px repeat(5, 1fr); }
  .doukousen-cell { font-size: 11px; padding: 8px 4px; min-height: 48px; }
  .doukousen-cell .dc-grades { font-size: 11px; }
  .zaishitsu-intro-text { font-size: 11px; }
}

/* ====================================================
 *   保護者おたより（通信）タブ
 * ==================================================== */

.tsushin-banner {
  background: linear-gradient(135deg, var(--tab-tsushin-c1) 0%, var(--tab-tsushin-c2) 100%);
}

.tsushin-toolbar {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 20px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line-soft);
  flex-wrap: wrap;
}
.tsushin-generate-btn {
  background: linear-gradient(135deg, #ff8a47 0%, #ffb366 100%);
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
  font-family: var(--font-title);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 4px 14px rgba(255, 138, 71, .25);
  transition: transform .15s, box-shadow .15s;
}
.tsushin-generate-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 22px rgba(255, 138, 71, .35);
}
.tsushin-meta {
  display: flex;
  gap: 14px;
  font-size: 12px;
  color: var(--ink-dim);
  font-weight: 500;
}
.tsushin-meta-item strong { color: var(--ink); font-weight: 700; }

.tsushin-progress {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 20px;
  background: linear-gradient(90deg, #fef3df 0%, #fdf5e1 100%);
  font-family: var(--font-title);
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  border-bottom: 1px solid var(--line-soft);
}
.tp-spinner {
  width: 18px; height: 18px;
  border: 3px solid var(--surface-2);
  border-top-color: #ff8a47;
  border-radius: 50%;
  animation: tsushin-spin 0.9s linear infinite;
}
@keyframes tsushin-spin {
  to { transform: rotate(360deg); }
}
.tp-elapsed { font-variant-numeric: tabular-nums; color: var(--ink-dim); }

.tsushin-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding: 16px;
}
@media (max-width: 900px) {
  .tsushin-cards { grid-template-columns: 1fr; }
}

.tsushin-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 0;
  border: 1px solid var(--line-soft);
  border-left: 5px solid var(--card-color, var(--ink-dim));
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.tsushin-card.grade-1 { --card-color: var(--grade-1-c1); }
.tsushin-card.grade-3 { --card-color: var(--grade-3-c1); }
.tsushin-card.grade-5 { --card-color: var(--grade-5-c1); }
.tsushin-card.grade-6 { --card-color: var(--grade-6-c1); }

.tsushin-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line-soft);
}
.tsushin-card-name {
  font-family: var(--font-title);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}
.tsushin-card-grade {
  font-size: 11px;
  color: var(--ink-dim);
  margin-left: 8px;
  font-weight: 500;
}
.tsushin-approved {
  font-size: 11px;
  color: var(--ok);
  background: var(--surface);
  padding: 4px 10px;
  border-radius: 999px;
  font-weight: 700;
  font-family: var(--font-title);
}
.tsushin-approve-btn {
  font-size: 11px;
  color: var(--warn);
  background: var(--surface);
  border: 1px solid var(--warn);
  padding: 4px 12px;
  border-radius: 999px;
  font-weight: 700;
  font-family: var(--font-title);
  cursor: pointer;
}
.tsushin-approve-btn:hover { background: var(--warn-bg, #fff3d6); }

.tsushin-body {
  display: grid;
  grid-template-columns: 1fr 200px;
  gap: 16px;
  padding: 14px 18px 18px;
}
@media (max-width: 720px) {
  .tsushin-body { grid-template-columns: 1fr; }
}

.tsushin-label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  color: var(--ink-dim);
  letter-spacing: 0.04em;
  margin-bottom: 6px;
  font-family: var(--font-title);
}

.tsushin-letter-text {
  width: 100%;
  min-height: 100px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--surface);
  resize: vertical;
}
.tsushin-letter-text:focus { outline: 2px solid var(--card-color, #ff8a47); outline-offset: 1px; }
.grade-1 .tsushin-letter-text { font-family: var(--font-hand); }

.tsushin-highlights {
  margin-top: 12px;
}
.tsushin-highlights ul {
  list-style: none;
  padding: 0;
  margin: 0;
}
.tsushin-highlights li {
  font-size: 12px;
  color: var(--ink);
  background: var(--surface-2);
  padding: 6px 10px;
  border-radius: var(--radius-xs);
  margin-bottom: 4px;
  font-family: var(--font-title);
}
.tsushin-highlights li::before { content: '・'; color: var(--card-color); margin-right: 4px; }

.tsushin-img-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  margin-bottom: 8px;
}
.tsushin-img-btn {
  position: relative;
  aspect-ratio: 1 / 1;
  border: 2px solid var(--line);
  border-radius: var(--radius-xs);
  background: var(--surface);
  cursor: pointer;
  overflow: hidden;
  padding: 0;
  transition: transform .12s, border-color .15s;
}
.tsushin-img-btn:hover { transform: scale(1.04); }
.tsushin-img-btn img {
  width: 100%; height: 100%;
  object-fit: cover;
}
.tsushin-img-btn.selected {
  border-color: var(--card-color, #ff8a47);
  border-width: 3px;
  box-shadow: 0 4px 14px rgba(0,0,0,.15);
}
.tsushin-img-check {
  position: absolute;
  top: 4px; right: 4px;
  background: var(--card-color, #ff8a47);
  color: #fff;
  width: 22px; height: 22px;
  border-radius: 50%;
  display: grid; place-items: center;
  font-weight: 900;
  font-size: 14px;
}
.tsushin-img-btn.empty {
  background: var(--surface-2);
  border-style: dashed;
}
.tsushin-img-empty {
  font-size: 24px;
  color: var(--ink-soft);
  font-weight: 300;
}
.tsushin-img-num {
  position: absolute;
  bottom: 4px;
  font-size: 10px;
  color: var(--ink-soft);
  font-weight: 700;
}

.tsushin-img-actions {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.tsushin-mini-btn {
  font-size: 11px;
  padding: 6px 10px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  color: var(--ink-dim);
  cursor: pointer;
  font-family: var(--font-title);
  font-weight: 500;
}
.tsushin-mini-btn:hover { background: var(--surface-2); color: var(--ink); }

/* ====================================================
 *   在室・通信タブ プレースホルダ
 * ==================================================== */

.tab-placeholder {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 60px 24px;
  text-align: center;
  color: var(--ink-dim);
  box-shadow: var(--shadow-soft);
  font-family: var(--font-title);
}
.tab-placeholder .placeholder-icon {
  font-size: 48px;
  margin-bottom: 12px;
}
.tab-placeholder h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
}
.tab-placeholder p {
  font-size: 13px;
  line-height: 1.7;
}

/* ====================================================
 *   Toast
 * ==================================================== */

.toast-stack {
  position: fixed;
  bottom: 24px; right: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 1000;
}
.toast {
  background: var(--ink);
  color: #fff;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 13px;
  box-shadow: var(--shadow-pop);
  font-family: var(--font-title);
  font-weight: 500;
  animation: toast-in .25s ease-out;
}
.toast.success { background: var(--ok); }
.toast.warn { background: var(--warn); }
.toast.error { background: var(--danger); }
@keyframes toast-in {
  from { transform: translateY(8px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

/* ====================================================
 *   Modal (placeholder)
 * ==================================================== */

.modal-root { position: fixed; inset: 0; z-index: 999; }

/* ====================================================
 *   Reference Section（交流学級 参考資料アップロード）
 * ==================================================== */

.reference-section {
  background: var(--surface, #fff);
  border-radius: var(--radius-sm, 10px);
  padding: 10px 14px 12px;
  margin: 0 0 12px;
  box-shadow: var(--shadow-soft);
  font-family: var(--font-title);
}
.reference-head {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 8px;
}
.reference-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}
.reference-sub {
  font-size: 11px;
  color: var(--ink-dim);
}
.reference-dropzone {
  border: 2px dashed var(--line, #cdb98a);
  border-radius: var(--radius-xs, 6px);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  background: rgba(255,251,238,0.6);
  transition: background .15s, border-color .15s, transform .12s;
  min-height: 92px;
  text-align: center;
}
.reference-dropzone--extract {
  background: rgba(232, 245, 232, 0.6);
  border-color: #9ec79e;
}
.reference-dropzone--extract.dragover {
  background: #d8ecd8;
  border-color: #5fa05f;
  transform: scale(1.01);
}
.reference-dropzone--reference {
  background: rgba(255, 248, 233, 0.6);
}
.reference-dropzone--reference.dragover {
  background: #fff3d6;
  border-color: var(--banner-c1, #d97e4e);
  transform: scale(1.01);
}
.reference-dropzone-head {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
}
.reference-dropzone-icon { font-size: 16px; }
.reference-dropzone--extract .reference-dropzone-title { color: #3f7c3f; }
.reference-dropzone--reference .reference-dropzone-title { color: var(--banner-c1, #d97e4e); }
.reference-add-btn {
  font-size: 12px;
  padding: 5px 12px;
  background: var(--banner-c1, #d97e4e);
  color: #fff;
  border: none;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
}
.reference-dropzone--extract .reference-add-btn { background: #5fa05f; }
.reference-add-btn:hover { filter: brightness(1.05); }
.reference-dropzone-hint {
  font-size: 11px;
  color: var(--ink-dim);
  line-height: 1.4;
}

/* ============ AI抽出プレビューモーダル ============ */
.extract-preview-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
}
.extract-preview-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(50, 40, 30, 0.55);
  backdrop-filter: blur(2px);
}
.extract-preview-card {
  position: relative;
  background: #fffdf6;
  border-radius: 12px;
  box-shadow: 0 12px 48px rgba(0,0,0,0.3);
  max-width: 800px;
  width: 92vw;
  max-height: 86vh;
  display: flex;
  flex-direction: column;
  font-family: var(--font-title);
  overflow: hidden;
}
.extract-preview-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line-soft, #e8dcc4);
  background: linear-gradient(135deg, #fff8e9, #fff);
}
.extract-preview-head h2 {
  font-size: 16px;
  font-weight: 800;
  color: var(--ink);
  margin: 0;
}
.extract-preview-close {
  background: none;
  border: none;
  font-size: 22px;
  color: var(--ink-dim);
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
}
.extract-preview-close:hover { background: rgba(0,0,0,0.06); }
.extract-preview-meta {
  padding: 10px 16px;
  background: #fff8e9;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 16px;
  font-size: 12px;
}
.preview-meta-row {
  display: flex;
  gap: 8px;
  align-items: baseline;
}
.preview-meta-label {
  color: var(--ink-dim);
  font-size: 11px;
  min-width: 36px;
}
.preview-confidence {
  font-size: 11px;
  padding: 1px 8px;
  border-radius: 999px;
  font-weight: 700;
}
.preview-confidence--high {
  background: #d8ecd8;
  color: #3f7c3f;
}
.preview-confidence--low {
  background: #ffe5d0;
  color: #b86b1a;
}
.extract-preview-body {
  flex: 1;
  overflow-y: auto;
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.preview-day {
  background: #fff;
  border: 1px solid var(--line-soft, #e8dcc4);
  border-radius: 6px;
  padding: 8px 10px;
}
.preview-day h4 {
  font-size: 12px;
  font-weight: 700;
  color: var(--banner-c1, #d97e4e);
  margin: 0 0 6px;
}
.preview-day ul {
  margin: 0;
  padding-left: 18px;
  font-size: 12px;
  line-height: 1.5;
}
.preview-period {
  display: grid;
  grid-template-columns: 36px 90px 1fr;
  gap: 8px;
  font-size: 12px;
  padding: 2px 0;
  border-bottom: 1px dotted #eee2cc;
}
.preview-period:last-child { border-bottom: none; }
.preview-period-num { font-weight: 700; color: var(--ink-dim); }
.preview-period-subj { font-weight: 700; }
.preview-period-cont { color: var(--ink-dim); }
.preview-star { color: var(--star-mark); font-size: 11px; }
.preview-empty {
  font-size: 11px;
  font-style: italic;
  color: var(--ink-dim);
}
.preview-warning {
  background: #fff4d4;
  border-left: 3px solid #f0a020;
  padding: 8px 10px;
  font-size: 12px;
  border-radius: 4px;
  line-height: 1.5;
}
.extract-preview-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  padding: 12px 16px;
  border-top: 1px solid var(--line-soft, #e8dcc4);
  background: #fff8e9;
}
.extract-preview-cancel,
.extract-preview-apply {
  font-size: 13px;
  padding: 8px 18px;
  border: none;
  border-radius: 999px;
  font-weight: 700;
  cursor: pointer;
}
.extract-preview-cancel {
  background: #eee;
  color: var(--ink);
}
.extract-preview-apply {
  background: #5fa05f;
  color: #fff;
}
.extract-preview-apply:hover { filter: brightness(1.05); }
.reference-list {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.reference-empty {
  font-size: 11px;
  color: var(--ink-dim);
  padding: 4px 6px;
  font-style: italic;
}
.reference-item {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 6px;
  background: var(--surface-2, #fff8e9);
  border-radius: var(--radius-xs, 6px);
}
.reference-item-open {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
  background: transparent;
  border: none;
  border-radius: var(--radius-xs);
  cursor: pointer;
  text-align: left;
  font-family: var(--font-title);
  font-size: 12px;
}
.reference-item-open:hover { background: #fff; }
.reference-item-icon { font-size: 16px; }
.reference-item-label { color: var(--ink); }
.reference-item-edit,
.reference-item-del {
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-xs);
  padding: 2px 6px;
  font-size: 12px;
  cursor: pointer;
  color: var(--ink-dim);
}
.reference-item-edit:hover,
.reference-item-del:hover { background: #fff; color: var(--ink); }

/* Reference Viewer Modal */
.reference-viewer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1100;
}
.reference-viewer-box {
  background: #fff;
  width: 90vw;
  height: 90vh;
  border-radius: var(--radius, 16px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: var(--shadow-pop);
}
.reference-viewer-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-title);
}
.reference-viewer-label {
  font-weight: 700;
  color: var(--ink);
}
.reference-viewer-close {
  background: transparent;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--ink-dim);
}
.reference-viewer-close:hover { color: var(--ink); }
.reference-viewer-body {
  flex: 1;
  display: flex;
  align-items: stretch;
  justify-content: center;
  background: #2a2a2a;
}
.reference-viewer-iframe {
  width: 100%;
  height: 100%;
  border: none;
  background: #fff;
}
.reference-viewer-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

/* ====================================================
 *   Preview Toggle（裏面プレビュー切替）
 * ==================================================== */

.preview-toggle {
  display: flex;
  justify-content: flex-end;
  margin: 0 0 6px;
}
.preview-toggle-btn {
  font-size: 11px;
  padding: 5px 10px;
  background: var(--surface-2, #fff8e9);
  border: 1px solid var(--line);
  border-radius: 999px;
  cursor: pointer;
  font-family: var(--font-title);
  color: var(--ink-dim);
}
.preview-toggle-btn:hover { background: #fff; color: var(--ink); }
.grade-panel.back-open .preview-toggle-btn { background: var(--banner-c1, #d97e4e); color: #fff; border-color: transparent; }

/* ====================================================
 *   行事セル（クリック編集対応）
 * ==================================================== */

.cell-meta {
  position: relative;
}
.cell-meta--clickable {
  cursor: pointer;
  transition: outline .12s;
}
.cell-meta--clickable:hover {
  outline: 2px solid var(--banner-c1, #d97e4e);
  outline-offset: -2px;
}
/* 編集済み印は ✎ マークのみ。背景は白のまま */
.cell-meta--edited {
  /* 背景色変更なし（社長要望） */
}
.cell-meta-mark {
  position: absolute;
  top: 1px;
  right: 4px;
  font-size: 9px;
  color: var(--banner-c1, #d97e4e);
  opacity: 0.55;
  cursor: help;
  pointer-events: auto;  /* title ツールチップを出すため受け取る */
  transition: opacity .12s ease;
}
.cell-meta-mark:hover { opacity: 1; }

/* 行事編集フォーム */
.events-edit-form {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 6px;
  background: #fff;
  border: 1px solid var(--banner-c1, #d97e4e);
  border-radius: var(--radius-xs);
  font-family: var(--font-title);
}
.events-edit-title {
  font-size: 11px;
  font-weight: 700;
  color: var(--ink);
}
.events-edit-textarea {
  width: 100%;
  min-height: 80px;
  font: inherit;
  font-size: 12px;
  line-height: 1.4;
  padding: 6px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xs);
  resize: vertical;
  white-space: pre-wrap;
}
.events-edit-actions {
  display: flex;
  gap: 4px;
  justify-content: flex-end;
}
.events-edit-actions button {
  font-size: 11px;
  padding: 4px 10px;
  border: none;
  border-radius: var(--radius-xs);
  background: #eee;
  cursor: pointer;
  font-family: var(--font-title);
}
.events-edit-actions button.primary {
  background: var(--banner-c1, #d97e4e);
  color: #fff;
  font-weight: 600;
}
.events-edit-hint {
  font-size: 9px;
  color: var(--ink-dim);
}

/* ====================================================
 *   保護者一言（closing-message）編集
 * ==================================================== */

.closing-message-wrap {
  position: relative;
}
.closing-message-text {
  white-space: pre-wrap;
}
.closing-message-edit {
  position: absolute;
  top: 6px;
  right: 8px;
  width: 24px;
  height: 24px;
  border: none;
  border-radius: 50%;
  background: rgba(255,255,255,0.7);
  cursor: pointer;
  font-size: 12px;
  color: var(--banner-c1, #d97e4e);
}
.closing-message-edit:hover { background: #fff; }
.closing-message-textarea {
  width: 100%;
  min-height: 52px;
  font: inherit;
  font-size: 13px;
  line-height: 1.6;
  padding: 8px 10px;
  border: 1px dashed var(--banner-c1, #d97e4e);
  border-radius: var(--radius-xs);
  background: rgba(255,255,255,0.8);
  resize: vertical;
}
.closing-message-counter {
  position: absolute;
  bottom: 6px;
  right: 12px;
  font-size: 10px;
  color: var(--ink-dim);
}
.closing-message-counter.warn { color: #c89020; }
.closing-message-counter.over { color: #c23a3a; font-weight: 700; }

/* ====================================================
 *   裏面（学級通信）— grade-panel-back
 * ==================================================== */

.grade-panel-back {
  background: var(--surface, #fff);
  border-radius: var(--radius, 16px);
  padding: 16px 18px;
  margin-top: 16px;
  box-shadow: var(--shadow-soft);
  display: none;
  font-family: var(--font-title);
  color: var(--ink);
}
.grade-panel.back-open .grade-panel-back { display: block; }

.nl-header {
  border-bottom: 2px solid #b8b0a4;
  padding-bottom: 8px;
  margin-bottom: 14px;
}
.nl-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--ink);
}

.nl-students {
  display: grid;
  gap: 14px;
  margin-bottom: 14px;
}
.nl-students.count-1 { grid-template-columns: 1fr; }
.nl-students.count-2 { grid-template-columns: 1fr 1fr; }
.nl-students.count-3 { grid-template-columns: 1fr 1fr 1fr; }

/* 児童パネル：半透明テーマカラー背景 + 左の太いカラーボーダー */
.nl-student {
  padding: 12px 14px;
  border-radius: var(--radius-xs, 6px);
  background: color-mix(in srgb, var(--student-color, #888) 18%, #ffffff);
  border-left: 6px solid var(--student-color, #888);
}
.nl-text {
  min-width: 0;
}
.nl-headline {
  font-size: 13px;
  font-weight: 700;
  color: color-mix(in srgb, var(--student-color, #555) 70%, #2a2a2a);
  margin-bottom: 6px;
}
.nl-body {
  font-size: 11pt;
  line-height: 1.65;
  color: var(--ink);
}

/* 将来 GPT 画像 API 結果を入れる空スペース（今は何も描画しない） */
.nl-image-slot {
  min-height: 0;
}

/* contenteditable focus state */
.nl-title[contenteditable]:focus,
.nl-headline[contenteditable]:focus,
.nl-body[contenteditable]:focus {
  outline: 2px solid var(--student-color, #d97e4e);
  outline-offset: 2px;
  background: rgba(255,255,255,0.7);
}

/* がんばり候補チェックリスト（PartA） — 画面のみ／印刷は除外 */
.nl-ganbari {
  margin-top: 12px;
  padding: 10px 12px;
  background: rgba(255,255,255,0.55);
  border-left: 3px solid var(--student-color, #d97e4e);
  border-radius: 6px;
}
.nl-ganbari-head {
  font-size: 12px;
  font-weight: 700;
  color: #555;
  margin-bottom: 6px;
}
.nl-ganbari-list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 320px;
  overflow-y: auto;
  font-size: 12px;
}
.nl-ganbari-list li { margin: 2px 0; }
.nl-ganbari-list label {
  display: flex;
  gap: 6px;
  align-items: flex-start;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 4px;
  transition: background .12s;
}
.nl-ganbari-list label:hover { background: rgba(0,0,0,0.04); }
.nl-ganbari-list input[type="checkbox"] {
  flex-shrink: 0;
  margin-top: 2px;
}
.nl-ganbari-date {
  flex-shrink: 0;
  color: #888;
  font-variant-numeric: tabular-nums;
  font-size: 11px;
}
.nl-ganbari-text { flex: 1; line-height: 1.4; }
.nl-ganbari-empty {
  font-size: 12px;
  color: #999;
  font-style: italic;
  padding: 6px 4px;
}
@media print {
  .nl-ganbari { display: none !important; }
}

/* ====================================================
 *   クイック「授業なし」化ボタン（コマセル右上）
 * ==================================================== */
.cell-quick-noclass {
  position: absolute;
  top: 2px;
  right: 4px;
  width: 18px;
  height: 18px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.85);
  font-size: 10px;
  line-height: 1;
  cursor: pointer;
  opacity: 0.45;
  transition: opacity .12s, transform .12s, background .12s;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
}
.cell-period:hover .cell-quick-noclass,
.cell-quick-noclass:hover { opacity: 1; background: #fff; transform: scale(1.12); }
.cell-quick-noclass:active { transform: scale(0.95); }
/* タッチ環境：常時薄表示で発見性確保 */
@media (hover: none) { .cell-quick-noclass { opacity: 0.55; } }
/* 警告マーク (.cell-warn-mark) が右上にある場合は左上に逃がす */
.cell-period--nakayoshi-conflict .cell-quick-noclass,
.cell-period--content-missing .cell-quick-noclass { right: auto; left: 4px; }

/* ====================================================
 *   末尾メッセージプリセットヒント
 * ==================================================== */
.closing-message-preset-hint {
  font-size: 10px;
  color: #5a7340;
  background: #e5f0dc;
  padding: 3px 10px;
  border-radius: 999px;
  margin: 0 0 4px 0;
  display: inline-block;
  font-family: var(--font-title);
}

/* ====================================================
 *   ソース切替スライドアニメーション
 * ==================================================== */
.extras-block.slide-out-left  { animation: extrasSlideOutLeft  .18s ease-in forwards; }
.extras-block.slide-out-right { animation: extrasSlideOutRight .18s ease-in forwards; }
.extras-block.slide-in-left   { animation: extrasSlideInLeft   .22s ease-out; }
.extras-block.slide-in-right  { animation: extrasSlideInRight  .22s ease-out; }
@keyframes extrasSlideOutLeft  { to   { transform: translateX(-28px); opacity: 0; } }
@keyframes extrasSlideOutRight { to   { transform: translateX( 28px); opacity: 0; } }
@keyframes extrasSlideInLeft   { from { transform: translateX(-28px); opacity: 0; } }
@keyframes extrasSlideInRight  { from { transform: translateX( 28px); opacity: 0; } }

/* ====================================================
 *   一斉編集モード（複数セル選択 + 学年指定）
 * ==================================================== */
/* grade-banner 内の「☑ 複数編集」ボタン：共通スタイルは .grade-banner-btn が担当（N3A PartR 移植） */

body.bulk-mode-active .cell-period,
body.bulk-mode-active .cell-meta,
body.bulk-mode-active .cell-holiday-column,
body.bulk-mode-active .closing-message-wrap {
  cursor: pointer;
  outline: 1px dashed rgba(74, 144, 200, 0.35);
  outline-offset: -1px;
  position: relative;
  /* チェックボックス（top:3 left:3 w:18 → 右端21px）と文字の被り防止 */
  padding-left: 28px;
}
body.bulk-mode-active .bulk-cell-selected {
  outline: 2px solid #4a90c8 !important;
  outline-offset: -2px;
  box-shadow: 0 0 0 4px rgba(74, 144, 200, 0.15);
  background: linear-gradient(135deg, rgba(74,144,200,0.10) 0%, transparent 60%) !important;
}
/* bulk-mode 中は授業なしクイックボタンを隠して衝突回避 */
body.bulk-mode-active .cell-quick-noclass { display: none !important; }

.bulk-select-cb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  margin: 0;
  cursor: pointer;
  accent-color: #4a90c8;
  z-index: 4;
}

.bulk-toolbar {
  position: fixed;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(38, 48, 64, 0.94);
  color: #fff;
  padding: 10px 16px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 200;
  box-shadow: 0 8px 28px rgba(0,0,0,0.25);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  font-family: var(--font-title);
  font-size: 13px;
  flex-wrap: wrap;
  max-width: calc(100vw - 24px);
  transition: top .15s ease-out, left .15s ease-out;
}
/* PartJ 2026-05-16: 選択中は浮動表示（中央下固定をオフ） */
.bulk-toolbar--floating {
  bottom: auto;
  transform: none;
}
.bulk-toolbar-label { font-weight: 600; color: rgba(255,255,255,0.7); }
.bulk-toolbar-divider { color: rgba(255,255,255,0.25); padding: 0 2px; }
.bulk-grade-chip {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18);
  color: rgba(255,255,255,0.9);
  padding: 5px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-family: inherit;
  cursor: pointer;
  transition: background .15s, transform .1s;
}
.bulk-grade-chip:hover { background: rgba(255,255,255,0.15); }
.bulk-grade-chip.active {
  background: #4a90c8;
  border-color: #4a90c8;
  color: #fff;
  font-weight: 700;
}
.bulk-count { color: #ffd44a; font-weight: 700; }
.bulk-apply-btn, .bulk-clear-btn, .bulk-cancel-btn {
  border: none;
  padding: 6px 14px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 600;
  font-family: inherit;
  transition: opacity .15s, transform .1s;
}
.bulk-apply-btn.primary { background: linear-gradient(135deg, #ffb366, #ff8a47); color: #fff; }
.bulk-apply-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.bulk-clear-btn { background: rgba(255,255,255,0.12); color: #fff; }
.bulk-cancel-btn { background: rgba(220, 80, 80, 0.55); color: #fff; }
.bulk-apply-btn:hover:not(:disabled), .bulk-clear-btn:hover, .bulk-cancel-btn:hover { transform: translateY(-1px); }

/* 一斉編集モーダル（events-editor-modal を流用） */
.bulk-edit-modal .events-editor-card { max-width: 520px; }
.bulk-edit-row {
  display: grid;
  grid-template-columns: 24px 88px 1fr;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px dotted rgba(0,0,0,0.08);
}
.bulk-edit-row:last-of-type { border-bottom: none; }
.bulk-edit-row > input[type="checkbox"].bulk-edit-enable { width: 18px; height: 18px; accent-color: #4a90c8; cursor: pointer; }
.bulk-edit-row > span { font-size: 13px; font-weight: 600; color: var(--ink-soft); }
.bulk-edit-row select,
.bulk-edit-row input[type="text"],
.bulk-edit-row textarea {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid var(--border-soft);
  border-radius: 6px;
  font-family: inherit;
  font-size: 13px;
}
.bulk-edit-row input:disabled,
.bulk-edit-row select:disabled,
.bulk-edit-row textarea:disabled {
  background: #f5f5f5;
  color: #aaa;
}
.bulk-edit-hint {
  font-size: 12px;
  color: var(--ink-soft);
  margin-bottom: 8px;
  padding: 8px 12px;
  background: rgba(74, 144, 200, 0.08);
  border-radius: 8px;
}

/* ====================================================
 *   Print（A4 横 両面：表面198mm / 裏面194mm）
 * ==================================================== */

@media print {
  /* PartV 2026-05-16: 縦/横 名前付き@page。既定は landscape、body.orient-portrait で portrait */
  @page landscape { size: A4 landscape; margin: 6mm 8mm; }
  @page portrait  { size: A4 portrait;  margin: 8mm 6mm; }
  * { print-color-adjust: exact; -webkit-print-color-adjust: exact; box-sizing: border-box; }
  html, body {
    background: #fff;
    font-size: 9pt;
    margin: 0 !important;
    padding: 0 !important;
  }

  /* 共通：UI除外 */
  .w-header,
  .grade-tabs,
  .header-actions,
  .toast-stack,
  .modal-root,
  .legend-bar,
  .highlight-strip,
  .grade-extras,
  .preview-toggle,
  .reference-section,
  .closing-message-edit,
  .closing-message-textarea,
  .closing-message-counter,
  .cell-meta-mark,
  .cell-warn-mark,
  .extract-preview-modal,
  .events-editor-modal,
  .floating-grade-switcher,
  .floating-source-switcher,
  .source-tabs,
  .cell-quick-noclass,
  .closing-message-preset-hint,
  .bulk-mode-toggle,
  .bulk-select-cb,
  .grade-banner-history,
  .bulk-toolbar,
  .bulk-edit-modal,
  .events-edit-form { display: none !important; }
  body.bulk-mode-active * { outline: none !important; }
  /* 警告アウトラインも印刷時は不要 */
  .cell-period--nakayoshi-conflict { outline: none !important; }
  .cell-period--content-missing { background: var(--place-n3a) !important; }
  .cell-meta--dismissal-conflict { background: var(--surface) !important; }
  /* スライドアニメーションの transform/opacity を完全リセット */
  .extras-block.slide-out-left, .extras-block.slide-out-right,
  .extras-block.slide-in-left, .extras-block.slide-in-right {
    animation: none !important;
    transform: none !important;
    opacity: 1 !important;
  }

  /* #app と grade-panels コンテナの余白・flex gap を完全除去（空白ページ防止） */
  #app {
    max-width: none !important;
    margin: 0 !important;
    padding: 0 !important;
    gap: 0 !important;
    display: block !important;
  }
  .grade-panels {
    margin: 0 !important;
    padding: 0 !important;
    gap: 0 !important;
  }

  /* PartU: 朝行も印刷に出す（旧 display:none を撤廃） */

  /* 学年タブ（4枚 × 表裏）のみ印刷。在室/通信タブは除外（specificityを上げて確実に） */
  .grade-panel.panel-tsushin,
  .grade-panel.panel-zaishitsu { display: none !important; }

  /* パネル全体は表→裏の順 */
  .grade-panel.grade-1,
  .grade-panel.grade-3,
  .grade-panel.grade-5,
  .grade-panel.grade-6 {
    display: block !important;
    box-shadow: none;
    background: transparent;
    margin: 0 !important;
    padding: 0 !important;
  }

  /* PartT/2026-05-15: body.print-isolated は1学年だけ印刷（headless Chrome 一括生成用）。
     アクティブタブ以外の learning panel を非表示。 */
  body.print-isolated .grade-panel:not(.active) {
    display: none !important;
  }

  /* === 表面：A4横1枚 === */
  .grade-panel-front {
    display: flex !important;
    flex-direction: column;
    height: 198mm;
    overflow: hidden;
    page-break-after: always;
    break-after: page;
    page-break-inside: avoid;
    break-inside: avoid;
    margin: 0; padding: 0;
    page: landscape;
  }
  .grade-banner {
    flex: 0 0 9mm;
    border-radius: 0;
    padding: 2mm 4mm;
    box-shadow: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }
  .grade-banner-title { font-size: 12pt; letter-spacing: 0.02em; }
  .grade-banner-week { font-size: 9pt; padding: 0 6px; }
  .grade-body {
    flex: 1 1 auto;
    padding: 1mm 4mm 0;
    display: flex;
    flex-direction: column;
    min-height: 0;
  }
  .week-grid {
    background: transparent;
    padding: 0;
    gap: 0.8mm;
    grid-template-columns: 14mm repeat(5, 1fr);
    /* PartU: 行構成 = ヘッダー + 行事 + 朝 + コマ6 + 下校 + 持ち物 */
    grid-template-rows: 6mm minmax(10mm, max-content) minmax(7mm, max-content) 1fr 1fr 1fr 1fr 1fr 1fr 8mm minmax(9mm, max-content);
    flex: 1 1 auto;
    height: 100%;
  }
  /* 1年生は6限なしなので、コマ5本構成 */
  .grade-panel.grade-1 .week-grid {
    grid-template-rows: 6mm minmax(10mm, max-content) minmax(7mm, max-content) 1fr 1fr 1fr 1fr 1fr 8mm minmax(9mm, max-content);
  }
  /* 行事セルは長文でも全部見せる（min-height + auto row でグリッドが伸びる） */
  .cell-meta[data-row="gyoji"] {
    overflow: visible;
    white-space: pre-wrap;
  }
  .cell-row-label,
  .cell-head {
    font-size: 9pt;
    padding: 1mm 1mm;
  }
  .cell-row-label.is-period .row-num { width: 5.5mm; height: 5.5mm; font-size: 10pt; }
  .cell-head .head-weekday { font-size: 10pt; }
  .cell-head .head-date    { font-size: 8.5pt; }
  .cell-meta {
    font-size: 9pt;
    line-height: 1.35;
    padding: 1mm 1.5mm;
    min-height: 0;
    white-space: pre-wrap;
    overflow: visible;  /* PartU: 持ち物等の長文を切らないように */
    word-break: break-word;
    overflow-wrap: break-word;
    /* PartT: 教科セルと同じような淡い枠で行事/朝/下校/持ち物セルを区切る */
    border: 0.4pt solid #d6cbb0;
    border-radius: 1.2mm;
    background: #fdfbf2;
  }
  .cell-period {
    min-height: 0;
    padding: 1mm 1.5mm;
    gap: 0.4mm;
    border-color: #c9c0a8;
    overflow: visible;  /* PartU: 内容が長い時もセルを伸ばして切らない */
  }
  /* 印刷時のコマセル本文：autoFitCellText() の inline style 優先、なければフォールバック値 */
  .cell-subject {
    font-size: var(--auto-subj-pt, 11pt);
    font-weight: 700;
    line-height: 1.3;
    word-break: break-word;
    overflow-wrap: break-word;
  }
  .cell-content {
    font-size: var(--auto-cont-pt, 9.5pt);
    line-height: 1.4;
    color: #333;
    word-break: break-word;
    overflow-wrap: break-word;
  }
  /* PartU: 印刷時の先生名はセル右下に絶対配置（grid行が縮んでも切れない） */
  .cell-period { position: relative; }
  .cell-teacher {
    position: absolute;
    bottom: 0.5mm;
    right: 1mm;
    font-size: var(--auto-tea-pt, 7pt);
    color: #555;
    margin-top: 0;
    background: rgba(255,255,255,0.55);
    padding: 0 0.5mm;
    border-radius: 0.5mm;
    line-height: 1.1;
  }
  /* cell-content と teacher の重なり回避：内容下に少しスペース確保 */
  .cell-content { padding-bottom: 3mm; }
  /* PartU: 旧 overflow: hidden は廃止。grid側で max-content 拡張するので切れない */
  .closing-message-wrap {
    /* PartT: 内容に応じて拡張、最低13mm。長文の場合は時間割を圧縮してでも全文表示 */
    flex: 0 0 auto;
    min-height: 13mm;
    margin: 1mm 4mm 0;
    padding: 2mm 4mm;
    font-size: 9pt;
    line-height: 1.5;
    border-radius: 0;
    box-shadow: none;
    border-left-width: 2mm;
    overflow: visible;
    white-space: pre-wrap;
    word-break: break-word;
    background: #fffdf6;
    /* PartU: フォント明示で他学年もきっちり教科書体に統一 */
    font-family: var(--font-body);
    font-weight: 400;
  }
  /* closingMessage の文字数で自動的に詰める（300字超で 8.5pt、500字超で 8pt） */
  .closing-message-wrap.is-long { font-size: 8.5pt; line-height: 1.45; }
  .closing-message-wrap.is-xlong { font-size: 8pt; line-height: 1.4; }

  /* === 裏面：A4横1枚 === */
  .grade-panel-back {
    display: block !important;
    background: #fff;
    box-shadow: none;
    border-radius: 0;
    height: 194mm;
    width: 100%;
    overflow: hidden;
    page-break-after: always;
    break-after: page;
    page-break-inside: avoid;
    break-inside: avoid;
    margin: 0;
    padding: 4mm 6mm;
    display: grid !important;
    /* タイトル → 児童パネル群 → 余白（将来GPT画像エリア） */
    grid-template-rows: 12mm auto 1fr;
    gap: 4mm;
  }
  /* 最後の学年（6年）の裏面では改ページしない（末尾空白ページ防止） */
  .grade-panel.grade-6 .grade-panel-back {
    page-break-after: auto !important;
    break-after: auto !important;
  }
  .nl-header {
    border-bottom: 1pt solid #888;
    padding-bottom: 2mm;
    margin-bottom: 0;
  }
  .nl-title { font-size: 18pt; font-weight: 800; }
  .nl-students {
    display: grid !important;
    gap: 5mm;
    margin: 0;
    align-self: start;
  }
  .nl-students.count-1 { grid-template-columns: 1fr; }
  .nl-students.count-2 { grid-template-columns: 1fr 1fr; }
  .nl-students.count-3 { grid-template-columns: 1fr 1fr 1fr; }
  .nl-student {
    padding: 4mm 5mm 4mm 4mm;
    background: color-mix(in srgb, var(--student-color, #888) 18%, #ffffff);
    border-left: 3mm solid var(--student-color, #888);
    border-radius: 1mm;
    overflow: hidden;
  }
  .nl-text { overflow: hidden; }
  .nl-headline {
    font-size: 11pt;
    font-weight: 700;
    color: color-mix(in srgb, var(--student-color, #555) 65%, #222);
    margin-bottom: 2mm;
  }
  .nl-body {
    font-size: 11pt;
    line-height: 1.65;
  }
  .nl-students.count-3 .nl-body { font-size: 10.5pt; line-height: 1.55; }
  .nl-image-slot {
    /* 空きスペース（将来 GPT 画像 API 用） */
  }
}

/* ====================================================
 *   Responsive
 * ==================================================== */

@media (max-width: 900px) {
  .grade-tab { min-width: 80px; }
  .week-grid { grid-template-columns: 60px repeat(5, minmax(0, 1fr)); }
  .cell-subject { font-size: 11px; }
  .cell-content { font-size: 10px; }
}

/* ========================================================================
 * PartL 2026-05-16: 右クリック/長押しコピペメニュー
 * ======================================================================== */
.ctx-menu {
  background: #fff;
  border: 1px solid var(--line, #d6cbb0);
  border-radius: 8px;
  padding: 4px;
  box-shadow: 0 6px 24px rgba(0,0,0,0.18);
  z-index: 600;
  font-family: var(--font-body);
  font-size: 13px;
  min-width: 200px;
  user-select: none;
}
.ctx-menu button {
  display: block;
  width: 100%;
  padding: 8px 12px;
  border: none;
  background: transparent;
  text-align: left;
  cursor: pointer;
  border-radius: 4px;
  font: inherit;
  color: var(--ink);
}
.ctx-menu button:hover:not([disabled]) {
  background: #f3ede0;
}
.ctx-menu button[disabled] {
  color: #b0a890;
  cursor: not-allowed;
}
@media print {
  .ctx-menu { display: none !important; }
}

/* PartQ 2026-05-16: ドラッグスワップのフィードバック（N3A PartR から強化版を移植：マウス対応＋「パカッ」演出） */

/* マウスでセル上ホバー時、ドラッグ可能ヒント */
@media (hover: hover) and (pointer: fine) {
  .cell-period:not(.swap-source-pickedup):not(.bulk-select-cb-on),
  .cell-meta:not(.swap-source-pickedup):not(.bulk-select-cb-on) {
    cursor: grab;
  }
}

/* ドラッグ中はbody全体を grabbing カーソル＆文字選択無効化（網掛けハイライト防止） */
body.weekly-swap-dragging,
body.weekly-swap-dragging *,
body.weekly-swap-dragging .cell-period,
body.weekly-swap-dragging .cell-meta {
  cursor: grabbing !important;
  user-select: none !important;
  -webkit-user-select: none !important;
  -webkit-touch-callout: none !important;
}
body.weekly-swap-dragging ::selection { background: transparent !important; }
body.weekly-swap-dragging ::-moz-selection { background: transparent !important; }

/* ホバー先（落とせる）：青枠 */
.cell-period.swap-target-hover,
.cell-meta.swap-target-hover {
  outline: 3px solid #4a90c8 !important;
  outline-offset: -1px;
  background: rgba(74,144,200,0.15) !important;
  box-shadow: 0 0 0 4px rgba(74,144,200,0.18) !important;
  transition: outline 0.08s ease, box-shadow 0.12s ease;
}

/* ホバー先（落とせない）：赤枠 */
.cell-period.swap-target-invalid,
.cell-meta.swap-target-invalid {
  outline: 3px solid #e05555 !important;
  outline-offset: -1px;
  cursor: not-allowed !important;
}

/* 持ち上がった元のセル：「パカッと外れた」抜け穴感 */
.swap-source-pickedup {
  opacity: 0.22 !important;
  outline: 2px dashed rgba(120, 120, 120, 0.45) !important;
  outline-offset: -3px;
  background: rgba(0, 0, 0, 0.04) !important;
  transition: opacity 0.16s ease, background 0.16s ease, outline 0.16s ease;
  filter: grayscale(0.4);
}

/* ゴースト（持ち上がったセル）：浮遊感＋温かい光のオーラ */
.cell-swap-ghost {
  border-radius: var(--radius-xs);
  animation: cellLiftUp 0.22s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  transition: left 0.04s linear, top 0.04s linear;
  will-change: transform, box-shadow;
  pointer-events: none;
}

@keyframes cellLiftUp {
  0% {
    transform: scale(1) rotate(0deg);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.12);
  }
  60% {
    transform: scale(1.10) rotate(-2deg);
    box-shadow:
      0 28px 56px rgba(0, 0, 0, 0.34),
      0 0 0 3px rgba(255, 180, 80, 0.75),
      0 0 32px rgba(255, 180, 80, 0.45);
  }
  100% {
    transform: scale(1.06) rotate(1.5deg);
    box-shadow:
      0 24px 48px rgba(0, 0, 0, 0.28),
      0 8px 16px rgba(0, 0, 0, 0.18),
      0 0 0 2px rgba(255, 180, 80, 0.65),
      0 0 24px rgba(255, 180, 80, 0.35);
  }
}

@media print {
  .cell-period.swap-target-hover, .cell-period.swap-target-invalid,
  .cell-meta.swap-target-hover, .cell-meta.swap-target-invalid,
  .swap-source-pickedup, .cell-swap-ghost { outline: none !important; opacity: 1 !important; box-shadow: none !important; }
}

/* ===== PartW 2026-05-16: 曜日ヘッダ長押し→列ドラッグ・グループドラッグ用 ===== */
.cell-head.swap-source-pickedup,
.cell-head.column-drag-source {
  opacity: 0.5 !important;
  outline: 2px dashed rgba(120,120,120,0.55) !important;
  outline-offset: -2px;
  background: rgba(0,0,0,0.05) !important;
}
.cell-head.swap-target-hover,
.cell-head.column-drag-target {
  outline: 3px solid #4a90c8 !important;
  outline-offset: -1px;
  background: rgba(74,144,200,0.18) !important;
  box-shadow: 0 0 0 4px rgba(74,144,200,0.20) !important;
}
.cell-head.swap-target-invalid {
  outline: 3px solid #e05555 !important;
  cursor: not-allowed !important;
}
/* 列ドラッグ中、列全体に淡いハイライト */
.week-grid.column-drag-target-col-0 > *:nth-child(7n+2),
.week-grid.column-drag-target-col-1 > *:nth-child(7n+3),
.week-grid.column-drag-target-col-2 > *:nth-child(7n+4),
.week-grid.column-drag-target-col-3 > *:nth-child(7n+5),
.week-grid.column-drag-target-col-4 > *:nth-child(7n+6) {
  background: rgba(74,144,200,0.12) !important;
  transition: background 0.1s ease;
}
@media (hover: hover) and (pointer: fine) {
  .cell-head { cursor: grab; }
}
@media print {
  .cell-head.swap-source-pickedup, .cell-head.swap-target-hover, .cell-head.swap-target-invalid {
    outline: none !important; opacity: 1 !important; box-shadow: none !important;
  }
}

/* ===== Swap or Copy 選択モーダル（共通：グループD&D・列D&D の確認用） ===== */
.swap-choice-modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 750;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.swap-choice-modal {
  background: #fff;
  border-radius: 14px;
  padding: 24px 28px 20px;
  box-shadow: 0 12px 48px rgba(0,0,0,0.28);
  max-width: 440px;
  width: 100%;
  font-family: var(--font-body, system-ui);
  text-align: center;
}
.swap-choice-modal h2 {
  margin: 0 0 12px;
  font-size: 18px;
  font-weight: 700;
  color: var(--ink, #333);
}
.swap-choice-modal .swap-choice-desc {
  margin: 0 0 22px;
  font-size: 14px;
  color: var(--ink-dim, #6e6a64);
  line-height: 1.55;
}
.swap-choice-modal .swap-choice-target {
  margin: -8px 0 18px;
  font-size: 13px;
  color: var(--ink, #333);
  background: #faf7ee;
  border: 1px dashed #e0dccc;
  border-radius: 8px;
  padding: 10px 14px;
  display: inline-block;
}
.swap-choice-actions {
  display: flex; gap: 10px; justify-content: center;
  flex-wrap: wrap;
}
.swap-choice-actions button {
  padding: 10px 22px;
  border-radius: 8px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  border: 1.5px solid var(--line, #ddd);
  background: #fff;
  color: var(--ink, #333);
  transition: background 0.15s, transform 0.1s;
}
.swap-choice-actions button:hover { transform: translateY(-1px); }
.swap-choice-cancel:hover { background: #f3ede0; }
.swap-choice-copy {
  background: #ffe9d4 !important;
  border-color: #f0c898 !important;
  color: #7a4e1b !important;
}
.swap-choice-copy:hover { background: #ffdcb8 !important; }
.swap-choice-swap {
  background: #4a90c8 !important;
  border-color: #4a90c8 !important;
  color: #fff !important;
}
.swap-choice-swap:hover { background: #3a7fbf !important; }

/* ===== N3A PartR 2026-05-16 移植: grade-banner ボタン群の統一スタイル ===== */
.grade-banner-actions {
  margin-left: auto;
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

/* 共通：pill形状、白塗り、影、目立つコントラスト */
.grade-banner-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 7px 14px;
  font-size: 13px;
  font-family: var(--font-title, inherit);
  font-weight: 700;
  letter-spacing: 0.02em;
  border-radius: 999px;
  border: 1.5px solid rgba(255, 255, 255, 0.85);
  background: rgba(255, 255, 255, 0.96);
  color: #5b3712;
  cursor: pointer;
  white-space: nowrap;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.06);
  transition: transform 0.12s ease, box-shadow 0.18s ease, background 0.18s ease, opacity 0.18s ease;
}
.grade-banner-btn:hover:not([disabled]) {
  transform: translateY(-1px);
  background: #fff;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18), 0 2px 4px rgba(0, 0, 0, 0.08);
}
.grade-banner-btn:active:not([disabled]) {
  transform: translateY(0);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
}
.grade-banner-btn[disabled] {
  opacity: 0.4;
  cursor: not-allowed;
  box-shadow: none;
}
.grade-banner-btn[disabled]:hover {
  transform: none;
  background: rgba(255, 255, 255, 0.96);
}
.grade-banner-btn.btn-undo,
.grade-banner-btn.btn-redo {
  color: #5b3712;
}
/* 複数編集 is-active 時の点灯感（青グラデ） */
.grade-banner-btn.bulk-mode-toggle.is-active {
  background: linear-gradient(135deg, #4a90c8, #2870ac);
  border-color: #1d56a8;
  color: #fff;
  box-shadow: 0 2px 8px rgba(74, 144, 200, 0.45), 0 0 0 2px rgba(74, 144, 200, 0.25);
}
.grade-banner-btn.bulk-mode-toggle.is-active:hover:not([disabled]) {
  background: linear-gradient(135deg, #5fa3d4, #3a7fbf);
}
@media print {
  .grade-banner-actions { display: none !important; }
}

/* PartT/2026-05-15: Daily反映 2重確認モーダル */
.apply-daily-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  animation: applyDailyFade 0.15s ease-out;
}
@keyframes applyDailyFade {
  from { opacity: 0; }
  to { opacity: 1; }
}
.apply-daily-modal {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
  padding: 28px 32px;
  max-width: 520px;
  width: calc(100% - 32px);
  font-family: inherit;
}
.apply-daily-modal h2 {
  margin: 0 0 14px;
  font-size: 20px;
  color: #2a2a2a;
}
.apply-daily-modal .modal-target {
  margin: 0 0 12px;
  padding: 10px 14px;
  background: #f5f1e6;
  border-left: 4px solid #c5a458;
  border-radius: 4px;
  font-size: 14px;
  color: #444;
}
.apply-daily-modal .modal-desc {
  margin: 0 0 18px;
  font-size: 13px;
  color: #555;
  line-height: 1.7;
}
.apply-daily-modal .modal-checks {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 22px;
  padding: 14px 16px;
  background: #fafafa;
  border-radius: 6px;
  border: 1px solid #e8e8e8;
}
.apply-daily-modal .modal-checks label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: #333;
  cursor: pointer;
  user-select: none;
  line-height: 1.5;
}
.apply-daily-modal .modal-checks input[type="checkbox"] {
  margin-top: 3px;
  width: 18px;
  height: 18px;
  cursor: pointer;
  flex-shrink: 0;
}
.apply-daily-modal .modal-checks input[type="checkbox"]:disabled + * {
  opacity: 0.6;
}
.apply-daily-modal .modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}
.apply-daily-modal .modal-btn {
  padding: 9px 20px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: opacity 0.15s, transform 0.05s;
}
.apply-daily-modal .modal-btn.cancel {
  background: #fff;
  border-color: #d0d0d0;
  color: #555;
}
.apply-daily-modal .modal-btn.cancel:hover:not(:disabled) {
  background: #f5f5f5;
}
.apply-daily-modal .modal-btn.primary {
  background: #4a8b4f;
  color: #fff;
}
.apply-daily-modal .modal-btn.primary:hover:not(:disabled) {
  background: #3e7642;
}
.apply-daily-modal .modal-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}
.apply-daily-modal .modal-btn:active:not(:disabled) {
  transform: scale(0.98);
}
.apply-daily-modal .modal-status {
  margin-top: 14px;
  padding: 8px 0 0;
  font-size: 13px;
  color: #555;
  min-height: 18px;
  border-top: 1px dashed #eee;
}
.apply-daily-modal .modal-status:empty {
  border-top: none;
  padding-top: 0;
}

/* ========================================================================
 * PartV 2026-05-16: A4 縦/横 切替
 *   - 既定 landscape は既存スタイルそのまま（.grade-panel-front: 198mm 等）
 *   - body.orient-portrait のときだけ portrait 用にサイズ・grid・フォントを上書き
 *   - N3A 原本の文字バランス思想を踏襲（短セルでもfontを引き上げない、長文は autoFitCellText で縮小）
 * ======================================================================== */
@media print {
  body.orient-portrait .grade-panel-front {
    page: portrait;
    height: 285mm;
  }
  body.orient-portrait .week-grid {
    grid-template-columns: 12mm repeat(5, 1fr);
    /* portrait は縦が長いので時限ブロックを大きく取れる */
    grid-template-rows: 7mm minmax(11mm, max-content) minmax(7mm, max-content) repeat(6, 1fr) 9mm minmax(10mm, max-content);
  }
  body.orient-portrait .grade-panel.grade-1 .week-grid {
    grid-template-rows: 7mm minmax(11mm, max-content) minmax(7mm, max-content) repeat(5, 1fr) 9mm minmax(10mm, max-content);
  }
  /* portrait のフォントフォールバック（autoFitCellText が --auto-* を上書き） */
  body.orient-portrait .cell-subject { font-size: var(--auto-subj-pt, 10pt); }
  body.orient-portrait .cell-content { font-size: var(--auto-cont-pt, 8.8pt); }
  body.orient-portrait .cell-teacher { font-size: var(--auto-tea-pt, 6.5pt); }
  body.orient-portrait .grade-banner-title { font-size: 11pt; }
  body.orient-portrait .closing-message-wrap { font-size: 8.5pt; line-height: 1.45; }
}

/* ========================================================================
 * PartV 2026-05-16: 縦/横 トグル UI（screen）
 * ======================================================================== */
.orientation-toggle {
  display: inline-flex;
  background: var(--surface, #fff);
  border-radius: 999px;
  padding: 3px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
  gap: 0;
  margin-right: 4px;
}
.orientation-toggle button {
  border: 0;
  background: transparent;
  padding: 5px 11px;
  border-radius: 999px;
  font-family: var(--font-title, inherit);
  font-size: 12px;
  color: var(--ink-dim, #888);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.orientation-toggle button:hover {
  color: var(--ink, #333);
  background: rgba(0, 0, 0, 0.04);
}
.orientation-toggle button.active {
  background: var(--ink, #333);
  color: #fff;
}

/* PartV 2026-05-16: 2本指横スワイプによるブラウザ「戻る」ナビゲーションを抑止
   WEEKLY/DAILY 上ではタブ切替で使いたいので、ページ遷移は完全に殺す */
html, body { overscroll-behavior-x: none; }

/* ========================================================================
 * PartV 2026-05-16: Excel 出力モーダル（Canva 風）
 *   apply-daily-modal-overlay の構造を踏襲しつつ、複数セクション + sticky footer
 * ======================================================================== */
.export-modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 700;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.export-modal {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.25);
  max-width: 480px;
  width: 100%;
  max-height: 90vh;
  display: flex; flex-direction: column;
  overflow: hidden;
  font-family: var(--font-body, system-ui);
}
.export-modal-head {
  display: flex; align-items: center; gap: 8px;
  padding: 14px 18px;
  border-bottom: 1px solid #eee;
  flex-shrink: 0;
}
.export-modal-back {
  background: transparent; border: 0;
  font-size: 18px; cursor: pointer;
  padding: 4px 8px; border-radius: 6px;
  color: var(--ink-dim, #888);
}
.export-modal-back:hover { background: #f3ede0; color: var(--ink, #333); }
.export-modal-head h2 {
  margin: 0; font-size: 16px; font-weight: 700; color: var(--ink, #333);
}
.export-section {
  padding: 14px 20px;
  border-bottom: 1px solid #f3ede0;
  overflow-y: auto;
}
.export-section:last-of-type { border-bottom: none; }
.export-section-label {
  display: block;
  font-size: 12px; font-weight: 700;
  color: var(--ink-dim, #666);
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}
.export-filetype-row {
  display: flex; gap: 8px;
}
.export-filetype-option {
  flex: 1;
  display: flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 14px;
  background: #fff;
  border: 1.5px solid #e0dccc;
  border-radius: 8px;
  font-family: inherit;
  font-size: 14px; font-weight: 600; color: var(--ink, #333);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.export-filetype-option:hover { background: #faf7ee; }
.export-filetype-option.active {
  background: #f0e8d4;
  border-color: var(--accent, #4a90c8);
  color: var(--accent, #4a90c8);
}
.export-filetype-icon { font-size: 18px; }
.export-filetype-hint {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--ink-dim, #888);
  line-height: 1.5;
}
.export-filetype-hint.hidden { display: none; }
.export-orient-row {
  display: flex; gap: 8px;
}
.export-orient-option {
  flex: 1;
  display: flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 14px;
  background: #fff;
  border: 1.5px solid #e0dccc;
  border-radius: 8px;
  font-size: 13px; font-weight: 600; color: var(--ink, #333);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}
.export-orient-option:hover { background: #faf7ee; }
.export-orient-option.active {
  background: #f0e8d4;
  border-color: var(--accent, #4a90c8);
  color: var(--accent, #4a90c8);
}
.export-orient-option input[type="radio"] {
  accent-color: var(--accent, #4a90c8);
}
.export-info {
  display: inline-block;
  width: 16px; height: 16px;
  margin-left: 4px;
  border-radius: 50%;
  background: #ddd6c6;
  color: #6b6353;
  font-size: 11px; font-weight: 700;
  text-align: center; line-height: 16px;
  cursor: help;
  vertical-align: middle;
}
.export-info:hover { background: var(--accent, #4a90c8); color: #fff; }
.export-section.hidden { display: none; }
.export-option, .export-preset, .export-week-item {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 4px;
  font-size: 13px;
  color: var(--ink, #333);
  cursor: pointer;
  border-radius: 6px;
}
.export-option:hover, .export-preset:hover, .export-week-item:hover { background: #faf7ee; }
.export-option input[type="checkbox"],
.export-preset input[type="checkbox"],
.export-week-item input[type="checkbox"] {
  accent-color: var(--accent, #4a90c8);
  width: 16px; height: 16px;
  flex-shrink: 0;
}
.export-divider {
  border: 0; border-top: 1px dashed #ddd;
  margin: 6px 0;
}
.export-week-list, .export-grade-list {
  max-height: 180px;
  overflow-y: auto;
}
.export-status-inline {
  font-size: 12px; color: #888;
  padding: 8px 4px;
}
.export-status-inline.error { color: #c33; }
.export-status {
  font-size: 12px;
  padding: 8px 20px;
  margin: 0;
  min-height: 1.4em;
}
.export-status.info { color: var(--ink-dim, #666); }
.export-status.success { color: #2c7a3e; font-weight: 600; }
.export-status.error { color: #c33; font-weight: 600; }
.export-status:empty { display: none; }
.export-modal-foot {
  padding: 14px 20px;
  border-top: 1px solid #eee;
  display: flex; gap: 10px; justify-content: flex-end;
  background: #fafafa;
  position: sticky; bottom: 0;
  flex-shrink: 0;
}
.export-cancel, .export-submit {
  padding: 9px 22px;
  border-radius: 8px;
  font-family: inherit; font-size: 14px; font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--line, #ddd);
  background: #fff;
  color: var(--ink, #333);
}
.export-cancel:hover { background: #f3ede0; }
.export-submit {
  background: var(--accent, #4a90c8);
  color: #fff;
  border-color: var(--accent, #4a90c8);
}
.export-submit:hover:not(:disabled) { background: #1d56a8; }
.export-submit:disabled { opacity: 0.55; cursor: not-allowed; }