:root {
  --orange: #e07a1f; --orange-soft: #fff4e8; --orange-line: #f2c99b;
  --green: #2e8b57; --green-soft: #e8f6ee; --grey: #8a8a8a; --grey-soft: #f1f1f1;
  --red: #c0392b; --red-soft: #fdecea; --yellow: #fff8d6; --unsaved: #ffe9d2;
  --blue: #2a6fb0; --ink: #2b2b2b; --line: #e3ded8; --bg: #faf7f3;
  font-size: 16px;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif; color: var(--ink); background: var(--bg); }
h1 { font-size: 1.5rem; margin: .2rem 0 1rem; }
h2 { font-size: 1.25rem; margin: 0 0 .8rem; }
h3 { font-size: 1.05rem; margin: 1rem 0 .5rem; }
.hidden { display: none !important; }
.muted { color: var(--grey); font-size: .9rem; }
.error { color: var(--red); }
.ok { color: var(--green); }
.center { text-align: center; }

.topbar { position: sticky; top: 0; z-index: 10; background: #fff; border-bottom: 1px solid var(--line); display: flex; flex-wrap: wrap; align-items: center; gap: .5rem 1rem; padding: .5rem 1rem; }
.brand { display: flex; align-items: center; gap: .5rem; }
.badge { background: var(--orange); color: #fff; border-radius: 99px; padding: 0 .6rem; font-size: .8rem; }
.nav { display: flex; gap: .25rem; flex-wrap: wrap; flex: 1; }
.nav a { text-decoration: none; color: var(--ink); padding: .4rem .7rem; border-radius: 8px; }
.nav a.active { background: var(--orange); color: #fff; }
.who { font-size: .9rem; color: var(--grey); }

main { padding: 1rem; max-width: 1400px; margin: 0 auto; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 1rem 1.2rem; margin-bottom: 1rem; }
.narrow { max-width: 460px; margin: 3rem auto; }
.foot { text-align: center; color: var(--grey); font-size: .8rem; padding: 1rem; }

button, .btn { font: inherit; border: 1px solid var(--line); background: #fff; border-radius: 8px; padding: .45rem .9rem; cursor: pointer; }
button.primary { background: var(--orange); border-color: var(--orange); color: #fff; }
button.danger { color: var(--red); border-color: #e9b5af; }
button.link { border: 0; background: none; color: var(--blue); padding: 0; text-decoration: underline; }
button:disabled { opacity: .5; cursor: not-allowed; }
input, select, textarea { font: inherit; border: 1px solid var(--line); border-radius: 6px; padding: .35rem .5rem; background: #fff; max-width: 100%; }
label { font-size: .9rem; }

.row { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; }
.row.space { justify-content: space-between; }
.filters { display: flex; flex-wrap: wrap; gap: .4rem; align-items: center; }
.filters > * { min-width: 0; }

.tablewrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
table { border-collapse: collapse; width: 100%; font-size: .92rem; }
th, td { padding: .4rem .5rem; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; white-space: nowrap; }
th { background: #f6f2ec; position: sticky; top: 0; z-index: 1; font-weight: 600; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
td.wrap { white-space: normal; min-width: 14rem; }
tr.sug td, .txcard.sug { background: var(--yellow); }
tr.dirty td, .txcard.dirty { background: var(--unsaved); }
.txcard { border-bottom: 1px solid var(--line); padding: .6rem .7rem; }
.txfields { display: grid; grid-template-columns: 1fr 1fr; gap: .35rem; }
.txfields select, .txfields input { width: 100%; }
tr.done td { background: #fff; }
tr.disabled td { color: var(--grey); background: var(--grey-soft); }

.chip { display: inline-block; border-radius: 6px; padding: 0 .45rem; font-size: .82rem; font-weight: 600; }
.chip.in { background: var(--green-soft); color: var(--green); }
.chip.out { background: var(--red-soft); color: var(--red); }
.chip.on { background: var(--green-soft); color: var(--green); }
.chip.off { background: var(--grey-soft); color: var(--grey); }
.chip.warn { background: var(--orange-soft); color: var(--orange); }
.chip.trf { background: #eaf1fb; color: var(--blue); }

.grid12 td { text-align: center; }
.cell-none { color: #bbb; }
.cell-pending { background: var(--orange-soft); color: var(--orange); font-weight: 600; cursor: pointer; }
.cell-done { background: var(--green-soft); color: var(--green); cursor: pointer; }
.cell-closed { background: var(--green); color: #fff; cursor: pointer; }

.stats { display: flex; flex-wrap: wrap; gap: 1rem; }
.stat { background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: .6rem 1rem; min-width: 9rem; }
.stat b { display: block; font-size: 1.4rem; }

.drop { display: block; border: 2px dashed var(--orange-line); border-radius: 12px; padding: 2rem 1rem; text-align: center; background: var(--orange-soft); cursor: pointer; }
.drop.over { background: #ffe7cc; }

.tabs { display: flex; gap: .3rem; flex-wrap: wrap; margin-bottom: .8rem; }
.tabs button.active { background: var(--orange); color: #fff; border-color: var(--orange); }
.editing { background: var(--orange-soft); border: 1px solid var(--orange-line); border-radius: 8px; padding: .4rem .7rem; margin-bottom: .5rem; }
.formgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr)); gap: .6rem; align-items: end; }
.formgrid label { display: flex; flex-direction: column; gap: .2rem; }

.pager { display: flex; gap: .5rem; align-items: center; justify-content: flex-end; margin: .5rem 0; }
.toast { position: fixed; left: 50%; transform: translateX(-50%); bottom: 1.2rem; background: #333; color: #fff; padding: .7rem 1.1rem; border-radius: 10px; z-index: 50; max-width: 92vw; white-space: pre-line; }
.toast.err { background: var(--red); }
.busy { position: fixed; top: .6rem; right: .6rem; background: var(--blue); color: #fff; padding: .3rem .8rem; border-radius: 99px; z-index: 60; font-size: .85rem; }
dialog { border: 0; border-radius: 14px; padding: 0; max-width: min(760px, 96vw); width: 100%; }
dialog::backdrop { background: rgba(0,0,0,.35); }
.modal-inner { padding: 1.1rem 1.2rem; max-height: 86vh; overflow: auto; }
.help { background: #f3f7fb; border-left: 4px solid var(--blue); padding: .5rem .8rem; border-radius: 6px; font-size: .9rem; margin-bottom: .8rem; }

@media (max-width: 720px) {
  main { padding: .6rem; }
  .nav { order: 3; flex: 1 1 100%; overflow-x: auto; flex-wrap: nowrap; }
  .who { margin-left: auto; }
  .nav a { white-space: nowrap; }
  th, td { padding: .35rem .4rem; font-size: .88rem; }
  .card { padding: .8rem; }
}