:root{
  --bg:#2e4a3b; --col:#ebecf0; --card:#fff; --ink:#1b2733; --muted:#6b7785;
  --line:#dfe3e8; --accent:#3b6cff; --danger:#e5484d; --done:#2fae66;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{background:var(--bg)}
body{margin:0;font-family:-apple-system,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;
     color:var(--ink);font-size:14px;background:var(--bg)}
header{position:sticky;top:0;z-index:30;background:#fff;border-bottom:1px solid var(--line);
       padding:10px 16px;display:flex;gap:10px;align-items:center;flex-wrap:wrap}
header h1{font-size:17px;margin:0;font-weight:800;letter-spacing:.04em}
header .ws{color:var(--muted);font-size:13px}
.filters{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-left:auto}
select,input[type=search],input[type=text],input[type=date],textarea{
  border:1px solid var(--line);border-radius:8px;padding:7px 9px;font:inherit;color:var(--ink);background:#fff;outline:none}
select:focus,input:focus,textarea:focus{border-color:var(--accent)}
.btn{border:1px solid transparent;border-radius:8px;padding:8px 13px;background:var(--accent);color:#fff;
     font-weight:700;cursor:pointer;font:inherit;font-weight:700;text-decoration:none;display:inline-flex;align-items:center}
.btn.ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn.danger{background:var(--danger);color:#fff}
.btn:disabled{opacity:.5;cursor:default}
.badge{background:#eef1f5;color:#556;border:1px solid var(--line);border-radius:999px;padding:2px 10px;font-size:12px;font-weight:700}

/* ボード */
.board{display:flex;gap:12px;padding:16px;overflow-x:auto;align-items:flex-start;min-height:calc(100vh - 58px);background:var(--bg)}
.column{width:290px;flex:0 0 290px;background:var(--col);border-radius:12px;display:flex;flex-direction:column;overflow:hidden}
.col-bar{height:4px;background:var(--bc,#9aa5b1)}
.col-head{padding:9px 12px;font-weight:700;display:flex;align-items:center;gap:8px;cursor:grab}
.col-head .count{background:rgba(0,0,0,.08);border-radius:999px;font-size:12px;padding:1px 8px;color:var(--muted)}
.col-add{margin-left:auto;border:none;background:transparent;color:var(--ink);cursor:pointer;font-size:19px;
         font-weight:700;width:26px;height:26px;border-radius:7px;line-height:1}
.col-add:hover{background:rgba(0,0,0,.10)}
.list{padding:8px;display:flex;flex-direction:column;gap:8px;min-height:30px;max-height:calc(100vh - 150px);overflow-y:auto}
.card{background:var(--card);border-radius:10px;box-shadow:0 1px 2px rgba(9,30,66,.2);padding:10px 12px;
      border-left:4px solid transparent;cursor:pointer}
.card.drag{opacity:.4}
/* 放置警告：期限の色より強く出す。枠線と左端も赤にして一目で分かるようにする */
.card.bg-stale{background:#f8463c;color:#fff;box-shadow:0 0 0 2px #c81e1e,0 2px 6px rgba(200,30,30,.45)}
.card.bg-stale .detail,.card.bg-stale .due,.card.bg-stale .due.soon,.card.bg-stale .due.over{color:#ffe8e6}
.card.bg-stale .chip{background:rgba(255,255,255,.22);color:#fff;border-color:rgba(255,255,255,.35)}
.card.bg-stale .chip.stale{background:#fff;color:#c81e1e;font-weight:700}
.card.bg-stale .statebox{border-color:rgba(255,255,255,.7);color:#fff}
.card.bg-stale .avatar{background:rgba(255,255,255,.3);color:#fff}
.card.bg-over{background:#fce4e8}
.card.bg-today{background:#eef6dd}
.card.bg-soon{background:#e7f1fb}
.card .head{display:flex;align-items:center;gap:7px}
.card .ttl{font-weight:600;flex:1;min-width:0;word-break:break-word}
.card .detail{font-size:12.5px;color:var(--muted);margin-top:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.card .meta{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin-top:8px}
.statebox{width:20px;height:20px;flex:0 0 auto;border:1.5px solid var(--line);border-radius:50%;background:#fff;
          color:#fff;font-size:12px;font-weight:700;display:inline-flex;align-items:center;justify-content:center}
.statebox.st-done{background:var(--done);border-color:var(--done)}
.statebox.st-hold{background:#e8a33d;border-color:#e8a33d}
.statebox.st-stop{background:#e04545;border-color:#e04545}
.chip{font-size:11.5px;padding:2px 7px;border-radius:6px;background:#eef1f5;color:#445;white-space:nowrap}
.chip.cat{background:#e7f0ff;color:#28508f;font-weight:700}
.avatar{width:20px;height:20px;border-radius:50%;background:var(--accent);color:#fff;font-size:11px;font-weight:700;
        display:inline-flex;align-items:center;justify-content:center}
.due{font-size:12px;color:var(--muted)}
.due.soon{color:#6b8e23;font-weight:700}
.due.over{color:#e04545;font-weight:700}
.cmt-dot{width:8px;height:8px;border-radius:50%;background:var(--danger);display:inline-block}

/* モーダル */
.overlay{position:fixed;inset:0;background:rgba(9,30,66,.45);display:none;align-items:flex-start;justify-content:center;
         z-index:50;padding:24px 12px;overflow:auto}
.overlay.show{display:flex}
.modal{background:#fff;border-radius:12px;width:100%;max-width:660px;position:relative;box-shadow:0 12px 40px rgba(9,30,66,.3)}
.modal .mbody{padding:18px 18px 6px;max-height:calc(100vh - 180px);overflow:auto}
.modal h2{font-size:16px;margin:0 0 14px}
.mclose{position:absolute;top:8px;right:8px;border:none;background:#fff;color:var(--muted);width:30px;height:30px;
        border-radius:8px;cursor:pointer;font-size:16px}
.field{margin-bottom:12px}
.field label{display:block;font-size:13px;font-weight:700;margin-bottom:4px}
.field input,.field textarea,.field select{width:100%}
.field textarea{min-height:72px;resize:vertical}
.row2{display:flex;gap:10px}.row2>*{flex:1}
.asg{display:flex;flex-wrap:wrap;gap:7px}
.asg label{display:inline-flex;align-items:center;gap:5px;font-size:13px;background:#f1f3f6;border-radius:999px;
           padding:4px 10px;cursor:pointer;font-weight:500}
.foot{display:flex;gap:8px;align-items:center;padding:12px 18px;border-top:1px solid var(--line);flex-wrap:wrap}
.foot .sp{margin-left:auto}
.todo{display:flex;align-items:center;gap:8px;padding:4px 0}
.todo .grip{cursor:grab;color:var(--muted)}
.todo .tx{flex:1}
.todo.done .tx{text-decoration:line-through;color:var(--muted)}
.mini{border:1px solid var(--line);background:#fff;border-radius:6px;padding:3px 8px;cursor:pointer;font-size:12px}
.cmt{border-top:1px solid var(--line);padding:8px 0}
.cmt .who{font-size:12px;color:var(--muted)}

/* 共通 */
.toast{position:fixed;bottom:16px;left:50%;transform:translateX(-50%);background:#1b2733;color:#fff;padding:9px 16px;
       border-radius:999px;font-size:13px;opacity:0;transition:.2s;pointer-events:none;z-index:70}
.toast.show{opacity:.95}
.loading{position:fixed;inset:0;z-index:60;display:flex;flex-direction:column;gap:12px;align-items:center;
         justify-content:center;background:rgba(46,74,59,.86);color:#eef6ea}
.loading.hide{display:none}
.spinner{width:34px;height:34px;border:3px solid rgba(238,246,234,.3);border-top-color:#eef6ea;border-radius:50%;
         animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.gate{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}
.gate .box{background:#fff;border-radius:14px;padding:28px 30px;max-width:380px;text-align:center;
           box-shadow:0 12px 40px rgba(0,0,0,.3)}
.gate h2{margin:0 0 8px;font-size:18px}
.gate p{margin:0 0 18px;color:var(--muted);font-size:13px}
body.readonly .edit-only{display:none !important}
.wrap{max-width:900px;margin:0 auto;padding:24px 16px;color:#eef6ea}
.wslist{display:grid;gap:10px}
.wslist a{display:flex;align-items:center;gap:10px;background:#fff;color:var(--ink);text-decoration:none;
          padding:14px 16px;border-radius:10px;font-weight:700}

/* ============================================================
   黒板の手書き風装飾（右下）。GAS版から移植
   pointer-events:none にして操作を一切邪魔しない
   ========================================================== */
.chalk-note{position:fixed;right:22px;bottom:16px;z-index:40;pointer-events:none;
  font-family:'Yomogi','Zen Kurenaido','Comic Sans MS',cursive;
  color:#eef6ea;text-align:right;line-height:1.55;transform:rotate(-2.5deg);
  opacity:.9;text-shadow:0 0 1.2px rgba(255,255,255,.55),0 1px 2px rgba(0,0,0,.25)}
.chalk-note .cd{font-size:23px;letter-spacing:.02em}
.chalk-note .cn{font-size:18px}
.chalk-note .cn small{opacity:.85;font-size:15px}
.chalk-note .underline{height:0;border-bottom:2px solid rgba(238,246,234,.7);
  border-radius:50%;margin:1px 2px 4px auto;width:70%;transform:rotate(.5deg)}
.chalk-note .umbrella{position:relative;width:150px;height:150px;margin:0 0 2px auto}
.chalk-note .umbrella svg{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.chalk-note .uname{position:absolute;top:104px;font-size:17px;white-space:nowrap;line-height:1}
.chalk-note .uname.ul{right:83px}
.chalk-note .uname.ur{left:83px}

/* 黒板消し。チョーク置き場のつもりで左下に置く */
.chalk-eraser{position:fixed;left:18px;bottom:14px;z-index:40;pointer-events:none;
  width:120px;filter:drop-shadow(0 3px 5px rgba(0,0,0,.35));transform:rotate(-3deg);opacity:.95}
.chalk-eraser svg{width:100%;height:auto;display:block}

/* 画面が狭いときは装飾を隠す（ボードの邪魔になる） */
@media (max-width: 820px){
  .chalk-note,.chalk-eraser{display:none !important}
}