:root {
  --bg: #f6f7f9;
  --card: #fff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #d1d5db;
  --primary: #2563eb;
  --duty: #dcfce7;
  --leave: #fee2e2;
  --warn: #b45309;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111827;
    --card: #1f2937;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --line: #374151;
    --duty: #14532d;
    --leave: #7f1d1d;
    --warn: #fbbf24;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Noto Sans TC", "Microsoft JhengHei", "PingFang TC", sans-serif;
  font-size: 15px;
}
.top {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between;
  padding: 16px; background: var(--card); border-bottom: 1px solid var(--line);
}
.top h1 { margin: 0; font-size: 1.4rem; }
main { max-width: 1200px; margin: 0 auto; padding: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; margin-bottom: 14px; }
.card h2 { margin: 0 0 10px; font-size: 1.1rem; }
.row { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: center; margin: 6px 0; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; }
button {
  font: inherit; padding: 6px 12px; border-radius: 6px; border: 1px solid var(--line);
  background: var(--card); color: var(--text); cursor: pointer;
}
label.button-like { display: inline-flex; align-items: center; cursor: pointer; font: inherit; border: 1px solid var(--line); border-radius: 6px; padding: 6px 12px; background: var(--card); color: var(--text); }
button.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
button.danger { background: #dc2626; border-color: #dc2626; color: #fff; }
button.small { padding: 2px 8px; }
input, select, textarea { font: inherit; color: inherit; background: transparent; border: 1px solid var(--line); border-radius: 6px; padding: 4px 6px; }
input.num { width: 4.5em; }
input.name { width: 7em; }
textarea { width: 100%; }
.days { display: inline-flex; gap: 2px; flex-wrap: wrap; }
.days label { display: inline-flex; align-items: center; gap: 1px; font-size: .9em; }
.scroll { overflow-x: auto; }
table { border-collapse: collapse; }
table.edit td, table.edit th { padding: 4px 6px; border-bottom: 1px solid var(--line); text-align: left; white-space: nowrap; }
.confirm { display: inline-flex; gap: 6px; align-items: center; color: var(--warn); }
.leave-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 6px; }
.hint { color: var(--muted); margin: 0 0 8px; font-size: .9em; }

table.grid { font-size: 13px; }
table.grid th, table.grid td { border: 1px solid var(--line); padding: 3px 4px; text-align: center; min-width: 2.2em; }
table.grid th.name, table.grid td.name { text-align: left; white-space: nowrap; position: sticky; left: 0; background: var(--card); }
table.grid td.cell { cursor: pointer; }
table.grid td.duty { background: var(--duty); font-weight: bold; }
table.grid td.leave { background: var(--leave); }
table.grid td.off, table.grid th.off { color: var(--muted); }
table.grid .sun { color: #dc2626; }
table.grid .sat { color: #16a34a; }
table.grid tr.daily td { font-size: 12px; white-space: nowrap; }
.dot { display: inline-block; width: .7em; height: .7em; border-radius: 50%; margin-right: 4px; vertical-align: middle; }
.warnings { color: var(--warn); padding-left: 1.2em; }
.warnings li.ok { color: #16a34a; list-style: none; margin-left: -1.2em; }
footer { text-align: center; color: var(--muted); padding: 20px; }
.print-only { display: none; }

@media print {
  @page { size: A4 landscape; margin: 10mm; }
  body { background: #fff; color: #000; font-size: 12px; }
  .no-print, .hint { display: none !important; }
  .print-only { display: block; white-space: pre-wrap; font-size: 16px; }
  .card { border: none; padding: 0; }
  .top { border: none; padding: 0 0 6px; }
  main { padding: 0; max-width: none; }
  table.grid { width: 100%; }
  table.grid th, table.grid td { border-color: #888; }
  table.grid td.duty { background: #dcfce7 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  table.grid td.leave { background: #fee2e2 !important; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}