:root {
    --bg: #f1f3f6; --col: #e4e8ee; --card: #fff; --text: #1d2433; --muted: #6b7587;
    --accent: #3b6df0; --border: #d3d9e3; --danger: #d64545;
    --high: #d64545; --mid: #e0a021; --low: #3aa76d;
  }
  @media (prefers-color-scheme: dark) {
    :root { --bg: #14171d; --col: #1f242d; --card: #2a303b; --text: #e8ebf1; --muted: #98a2b5; --border: #3a4252; --accent: #6b92ff; }
  }
  * { box-sizing: border-box; }
  body { margin: 0; font: 15px/1.4 -apple-system, "Segoe UI", Roboto, sans-serif; background: var(--bg); color: var(--text); height: 100vh; display: flex; flex-direction: column; }
  header { display: flex; gap: 12px; align-items: center; padding: 12px 20px; flex-wrap: wrap; }
  header h1 { font-size: 20px; margin: 0; flex: 1; }
  input, select, textarea, button { font: inherit; color: inherit; }
  input, select, textarea { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 7px 10px; width: 100%; }
  header input { width: 220px; }
  button { cursor: pointer; border: 1px solid var(--border); background: var(--card); border-radius: 8px; padding: 7px 12px; }
  button:hover { border-color: var(--accent); }
  button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
  button.danger { color: var(--danger); }
  #board { flex: 1; display: flex; gap: 14px; padding: 4px 20px 20px; overflow-x: auto; align-items: flex-start; }
  .col { background: var(--col); border-radius: 12px; width: 300px; flex: none; max-height: 100%; display: flex; flex-direction: column; }
  .col.over { outline: 2px dashed var(--accent); }
  .col-head { display: flex; align-items: center; gap: 6px; padding: 10px 12px 6px; }
  .col-title { flex: 1; font-weight: 600; background: transparent; border: 1px solid transparent; padding: 3px 6px; }
  .col-title:focus { background: var(--card); border-color: var(--border); }
  .count { color: var(--muted); font-size: 13px; }
  .icon { border: none; background: transparent; padding: 3px 7px; color: var(--muted); }
  .cards { overflow-y: auto; padding: 4px 10px; min-height: 12px; display: flex; flex-direction: column; gap: 8px; }
  .card { background: var(--card); border-radius: 10px; padding: 10px 12px; box-shadow: 0 1px 2px rgba(0,0,0,.12); cursor: grab; border-left: 4px solid var(--low); }
  .card.p-high { border-left-color: var(--high); } .card.p-mid { border-left-color: var(--mid); }
  .card.dragging { opacity: .4; }
  .card h3 { margin: 0 0 4px; font-size: 15px; word-break: break-word; }
  .card p { margin: 0 0 6px; color: var(--muted); font-size: 13px; white-space: pre-wrap; word-break: break-word; }
  .meta { display: flex; justify-content: space-between; align-items: center; font-size: 12px; color: var(--muted); }
  .overdue { color: var(--danger); font-weight: 600; }
  .add-card { margin: 8px 10px 10px; text-align: left; background: transparent; border: none; color: var(--muted); }
  .add-card:hover { color: var(--accent); }
  .add-col { width: 300px; flex: none; }
  dialog { border: none; border-radius: 14px; padding: 20px; width: min(420px, 92vw); background: var(--card); color: var(--text); }
  dialog::backdrop { background: rgba(0,0,0,.45); }
  dialog label { display: block; margin: 10px 0 4px; font-size: 13px; color: var(--muted); }
  .row { display: flex; gap: 10px; } .row > * { flex: 1; }
  .actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }
  .actions .spacer { flex: 1; }
  #status { font-size: 13px; color: var(--muted); }
  #status.ok { color: var(--low); } #status.bad { color: var(--danger); }
  [hidden] { display: none !important; }
  .err { color: var(--danger); font-size: 13px; min-height: 18px; margin: 8px 0 0; }
  .users { display: flex; flex-direction: column; gap: 6px; margin: 12px 0; max-height: 260px; overflow-y: auto; }
  .urow { display: flex; align-items: center; gap: 6px; padding: 6px 8px; background: var(--bg); border-radius: 8px; }
  .urow .nm { flex: 1; min-width: 0; word-break: break-word; }
  .urow small { color: var(--muted); }
  .urow button { padding: 3px 8px; font-size: 13px; }
  .err.ok { color: var(--low); }
  dialog.wide { width: min(520px, 94vw); max-height: 92vh; overflow-y: auto; }
  dialog section { border-top: 1px solid var(--border); margin-top: 14px; padding-top: 4px; }
  dialog h3 { margin: 10px 0 8px; font-size: 15px; }
  .cab-info { color: var(--muted); margin: 4px 0 0; }
  .who-chip { color: var(--accent); }
  .btn { display: inline-block; text-decoration: none; color: inherit; cursor: pointer; border: 1px solid var(--border); background: var(--card); border-radius: 8px; padding: 7px 12px; }
  .btn:hover { border-color: var(--accent); }
  .panel { background: var(--col); border-radius: 12px; padding: 16px 20px; margin-bottom: 14px; }
  .panel h2 { margin: 0; font-size: 18px; }
  .panel h3 { margin: 0 0 10px; font-size: 15px; }
  .panel .users { max-height: none; }
  .panel input, .panel select { background: var(--card); }
  main.cab { width: 100%; max-width: 640px; margin: 0 auto; padding: 4px 20px 30px; overflow-y: auto; flex: 1; }

  .badge { display: inline-block; min-width: 18px; padding: 0 5px; border-radius: 9px; background: var(--danger); color: #fff; font-size: 12px; text-align: center; margin-left: 4px; }
  .board-sel { width: auto; max-width: 220px; font-weight: 600; }
  .empty-state { margin: 40px auto; text-align: center; color: var(--muted); max-width: 420px; }
  .empty-state a { color: var(--accent); }
  .col-title[readonly] { cursor: default; }
  .bblock { background: var(--bg); border-radius: 10px; padding: 12px 14px; margin-bottom: 10px; }
  .bblock .brow { display: flex; gap: 8px; align-items: center; }
  .bblock .bname { flex: 1; min-width: 0; font-weight: 600; }
  .bblock small, .bhint { color: var(--muted); font-size: 13px; }
  .members { display: flex; flex-direction: column; gap: 6px; margin: 10px 0; }
  .mrow { display: flex; align-items: center; gap: 8px; }
  .mrow .nm { flex: 1; min-width: 0; word-break: break-word; }
  .mrow select { width: auto; }
  .updatebar { flex: none; display: flex; gap: 10px; align-items: center; justify-content: center; flex-wrap: wrap; padding: 8px 14px; background: var(--accent); color: #fff; font-size: 14px; }
  .updatebar button { background: #fff; color: var(--accent); border-color: #fff; padding: 3px 12px; }
  .updatebar button.x { background: transparent; color: #fff; border: none; padding: 3px 8px; }
  .overlay { position: fixed; inset: 0; z-index: 100; display: flex; flex-direction: column; gap: 12px; align-items: center; justify-content: center; text-align: center; padding: 20px; background: rgba(0,0,0,.7); color: #fff; font-size: 18px; }
  .vrow { display: flex; align-items: center; gap: 8px; padding: 6px 8px; background: var(--bg); border-radius: 8px; margin-bottom: 6px; }
  .vrow .nm { flex: 1; min-width: 0; word-break: break-word; }
  .vrow small { color: var(--muted); display: block; }