:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #2563eb;
  --accent-text: #ffffff;
  --danger: #dc2626;
  --warn-bg: #fef2f2;
  --warn-line: #fecaca;
  --chip: #f3f4f6;
  --add: #16a34a;
  --del: #b91c1c;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111418;
    --card: #1b1f25;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --line: #2d333b;
    --accent: #3b82f6;
    --danger: #f87171;
    --warn-bg: #2a1618;
    --warn-line: #5b2228;
    --chip: #262b33;
    --add: #4ade80;
    --del: #fca5a5;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 system-ui, -apple-system, "Segoe UI", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  overflow-wrap: anywhere;
}
button, select, input, textarea { font: inherit; color: inherit; }
button, .file {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 12px;
  cursor: pointer;
  min-height: 36px;
}
button:hover, .file:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
button.danger { color: var(--danger); }
button.mini { padding: 2px 8px; min-height: 28px; font-size: 13px; }
select, input[type=text], input[type=date], textarea {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 8px;
  max-width: 100%;
}
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.top {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; justify-content: space-between;
  padding: 16px; max-width: 1080px; margin: 0 auto;
}
.top h1 { margin: 0; font-size: 22px; line-height: 1.3; }
.subtitle { color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.actions .period { display: flex; gap: 6px; align-items: center; }
.toggle { display: inline-flex; gap: 4px; align-items: center; cursor: pointer; }

main { max-width: 1080px; margin: 0 auto; padding: 0 16px 24px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 14px 16px; margin-bottom: 14px;
}
.card h2 { margin: 0 0 10px; font-size: 17px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.card h2 .count { color: var(--muted); font-weight: normal; font-size: 14px; }
.card h2 .spacer { flex: 1; }
.hint { color: var(--muted); font-size: 13px; margin: 6px 0; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.row.end { justify-content: flex-end; margin-top: 12px; }
.notice { background: var(--warn-bg); border: 1px solid var(--warn-line); border-radius: 10px; padding: 10px 14px; margin-bottom: 14px; font-size: 14px; }
.notice ul { margin: 4px 0 0; padding-left: 20px; }
.period-bar { display: flex; flex-wrap: wrap; gap: 8px; }

/* 總覽 */
.summary-text { margin: 0 0 10px; white-space: pre-wrap; }
.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(110px, 1fr)); gap: 8px; }
.kpi { background: var(--chip); border-radius: 10px; padding: 8px 10px; }
.kpi b { display: block; font-size: 22px; line-height: 1.2; }
.kpi span { color: var(--muted); font-size: 13px; }
.kpi.bad b { color: var(--danger); }
.bar { display: flex; height: 10px; border-radius: 5px; overflow: hidden; background: var(--chip); margin: 12px 0 6px; }
.bar i { display: block; height: 100%; }
.legend { display: flex; flex-wrap: wrap; gap: 4px 12px; font-size: 13px; color: var(--muted); }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 4px; vertical-align: -1px; }

/* 清單 */
.items { list-style: none; margin: 0; padding: 0; }
.item { border-top: 1px solid var(--line); padding: 10px 0; display: flex; gap: 10px; align-items: flex-start; }
.item:first-child { border-top: 0; padding-top: 2px; }
.item .main { flex: 1; min-width: 0; }
.item .name { font-weight: 600; }
.item .meta { display: flex; flex-wrap: wrap; gap: 4px 10px; color: var(--muted); font-size: 13px; }
.item .note { margin-top: 2px; white-space: pre-wrap; font-size: 14px; }
.item.overdue { background: var(--warn-bg); margin: 0 -16px; padding-left: 16px; padding-right: 16px; }
.item .ops { display: flex; gap: 4px; flex-shrink: 0; }
.badge {
  display: inline-block; border-radius: 999px; padding: 0 8px; font-size: 12px; line-height: 22px;
  color: #fff; white-space: nowrap; flex-shrink: 0; margin-top: 1px;
}
.tag { display: inline-block; border: 1px solid var(--line); border-radius: 6px; padding: 0 6px; font-size: 12px; line-height: 20px; }
.tag.high { border-color: var(--danger); color: var(--danger); }
.tag.late { background: var(--danger); border-color: var(--danger); color: #fff; }
.empty { color: var(--muted); font-size: 14px; margin: 0; }

/* 本期 vs 上期 */
.diff { list-style: none; margin: 0; padding: 0; font-size: 14px; }
.diff li { padding: 3px 0; }
.diff .k { display: inline-block; min-width: 4.5em; color: var(--muted); }
.diff .add { color: var(--add); }
.diff .del { color: var(--del); text-decoration: line-through; }

/* 對話框 */
dialog {
  border: 1px solid var(--line); border-radius: 14px; padding: 16px;
  background: var(--card); color: var(--text);
  width: min(560px, calc(100vw - 32px)); max-height: calc(100vh - 32px);
}
dialog::backdrop { background: rgba(0, 0, 0, .45); }
dialog h2 { margin: 0 0 12px; font-size: 18px; }
.fields { display: grid; gap: 10px; }
.fields label { display: grid; gap: 4px; font-size: 14px; }
.fields label.check { display: flex; gap: 6px; align-items: center; }
.fields input[type=text], .fields input[type=date], .fields select, .fields textarea { width: 100%; }
dialog textarea { width: 100%; resize: vertical; }
#lineText { font-size: 14px; line-height: 1.5; }
.err { color: var(--danger); margin: 8px 0 0; }

details summary { cursor: pointer; font-weight: 600; }
details[open] summary { margin-bottom: 8px; }
code { background: var(--chip); padding: 0 4px; border-radius: 4px; }
footer { text-align: center; color: var(--muted); padding: 8px 16px 24px; }

.toast {
  position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%);
  background: #111827; color: #fff; padding: 8px 14px; border-radius: 8px; font-size: 14px;
  max-width: calc(100vw - 32px); z-index: 10;
}

@media (max-width: 600px) {
  .top { padding: 12px 16px; }
  .top h1 { font-size: 19px; }
  .actions { width: 100%; }
  .actions .period { width: 100%; }
  .actions .period select { flex: 1; min-width: 0; }
  .item { flex-wrap: wrap; }
  .item .ops { width: 100%; justify-content: flex-end; }
}

/* 列印：白底黑字、不要按鈕 */
@media print {
  :root { --bg: #fff; --card: #fff; --text: #000; --muted: #444; --line: #bbb; --chip: #f2f2f2; --warn-bg: #fff3f3; }
  body { font-size: 12pt; background: #fff; }
  .no-print, .ops, dialog { display: none !important; }
  .top { padding: 0 0 8px; }
  main { padding: 0; max-width: none; }
  .card { border: 0; border-bottom: 1px solid #999; border-radius: 0; padding: 8px 0; break-inside: avoid-page; }
  .item { break-inside: avoid; }
  .item.overdue { margin: 0; padding-left: 4px; padding-right: 4px; }
  .badge, .tag.late, .bar i { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}

/* 客製化服務資訊：頁尾低調小字，不擋操作；顏色沿用父層，深淺色都看得清；列印時隱藏 */
.custom-ad { margin: 6px auto 0; padding: 0 12px; max-width: 60em; font-size: 12px; line-height: 1.6; color: inherit; text-align: center; overflow-wrap: anywhere; }
.custom-ad a { color: inherit; text-decoration: underline; }
@media print { .custom-ad { display: none !important; } }