:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-2: #f1f3f6;
  --border: #e3e6eb;
  --text: #1c2330;
  --muted: #6b7484;
  --accent: #1f5eff;
  --accent-text: #ffffff;
  --gain: #d43c3c;   /* 台灣習慣：漲紅 */
  --loss: #138a4e;   /* 跌綠 */
  --danger: #c62f2f;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(16, 24, 40, .05);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #12151b;
    --surface: #1a1f27;
    --surface-2: #222833;
    --border: #2e3542;
    --text: #e6e9ef;
    --muted: #949cab;
    --accent: #5b8cff;
    --gain: #f06a6a;
    --loss: #3fbf7f;
    --danger: #f06a6a;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
}
h1, h2, h3 { margin: 0; font-weight: 600; }
h2 { font-size: 15px; margin-bottom: 12px; }
h3 { font-size: 14px; margin: 18px 0 8px; }
small { color: var(--muted); font-weight: 400; margin-left: 6px; }

.topbar {
  display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
  padding: 12px 24px; background: var(--surface); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 5;
}
.topbar h1 { font-size: 17px; }
#tabs { display: flex; gap: 4px; overflow-x: auto; }
#tabs button {
  background: none; color: var(--muted); border: 0; padding: 8px 12px; border-radius: 8px; white-space: nowrap;
}
#tabs button:hover { background: var(--surface-2); color: var(--text); }
#tabs button.active { background: var(--surface-2); color: var(--text); font-weight: 600; }

main { max-width: 1200px; margin: 0 auto; padding: 20px 24px 60px; }
.view { display: none; }
.view.active { display: block; }

.toolbar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.toolbar .hint { margin: 0; flex: 1 1 320px; }
.spacer { flex: 1; }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; margin-bottom: 16px; box-shadow: var(--shadow);
}
.grid-2 { display: grid; grid-template-columns: 1fr 1.6fr; gap: 16px; }
.chart-box { position: relative; height: 280px; }

.kpis { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 16px; }
.kpi { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; box-shadow: var(--shadow); }
.kpi .label { color: var(--muted); font-size: 13px; }
.kpi .value { font-size: 22px; font-weight: 600; font-variant-numeric: tabular-nums; margin-top: 2px; }
.kpi-hero { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.kpi-hero .label, .kpi-hero .sub { color: color-mix(in srgb, var(--accent-text) 80%, transparent); }
.kpi-hero .value { font-size: 26px; }
.kpi-hero .warn { color: #ffe08a; }
.kpi .sub { font-size: 12.5px; color: var(--muted); font-variant-numeric: tabular-nums; }

button {
  font: inherit; cursor: pointer; border-radius: 8px; border: 1px solid transparent;
  background: var(--accent); color: var(--accent-text); padding: 7px 14px; font-weight: 500;
}
button:disabled { opacity: .5; cursor: default; }
button.secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
button.secondary:hover { background: var(--surface-2); }
button.small { padding: 4px 10px; font-size: 13px; }
button.danger-link { background: none; color: var(--danger); padding: 7px 8px; }
button.link { background: none; color: var(--accent); padding: 0; border: 0; }
button.icon { background: none; color: var(--muted); padding: 2px 6px; }

input, select, textarea {
  font: inherit; color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: 7px; padding: 6px 8px; min-width: 0;
}
input:focus, select:focus, textarea:focus { outline: 2px solid color-mix(in srgb, var(--accent) 40%, transparent); border-color: var(--accent); }
input[type="color"] { padding: 2px; height: 34px; width: 60px; }
label { display: flex; flex-direction: column; gap: 4px; color: var(--muted); font-size: 13px; }
.toolbar label { flex-direction: row; align-items: center; gap: 8px; }
label.check { flex-direction: row; align-items: center; gap: 8px; color: var(--text); }
label.check input { width: auto; }

.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { padding: 8px 10px; text-align: left; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { color: var(--muted); font-weight: 500; font-size: 12.5px; background: var(--surface-2); }
td.num, th.num { text-align: right; }
tr:last-child td { border-bottom: 0; }
tfoot td { font-weight: 600; border-top: 2px solid var(--border); }
tr.archived td { color: var(--muted); }
.gain { color: var(--gain); }
.warn { color: #d97706; cursor: help; }
button.name-link { color: var(--text); font-weight: 500; text-align: left; }
button.name-link:hover { color: var(--accent); }
.loss { color: var(--loss); }
.muted { color: var(--muted); }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 8px; vertical-align: -1px; }
.tag { display: inline-block; font-size: 11.5px; padding: 1px 7px; border-radius: 99px; background: var(--surface-2); color: var(--muted); margin-left: 6px; }

/* 月度盤點輸入表 */
.group-title { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.group-title h2 { margin: 0; }
.group-title button { margin-left: 8px; }
.group-title .total { margin-left: auto; color: var(--muted); font-variant-numeric: tabular-nums; }
.entry td:has(> input:not(.note)) { text-align: right; }
.entry .who { font-size: 11.5px; color: var(--muted); }
.entry .twd { font-size: 11.5px; color: var(--muted); }
tr.ledger .who { font-size: 11.5px; color: var(--muted); }
.ledger-actions { display: flex; gap: 10px; align-items: center; }
tr.tx-detail > td { background: var(--surface-2); padding: 8px 16px; white-space: normal; }
.tx-list { display: flex; flex-direction: column; }
.tx-row { display: grid; grid-template-columns: 54px 48px 110px 70px 1fr auto; gap: 10px; align-items: center; padding: 5px 0; border-bottom: 1px dashed var(--border); }
.tx-row:last-child { border-bottom: 0; }
.tx-row .num { text-align: right; font-variant-numeric: tabular-nums; }
.tag.tag-in { color: var(--gain); }
.tag.tag-out { color: var(--loss); }
button.danger-link.small { padding: 0 4px; font-size: 13px; }
@media (max-width: 560px) { .tx-row { grid-template-columns: 48px 44px 1fr auto; } .tx-row > :nth-child(4), .tx-row > :nth-child(5) { display: none; } }
#fx-card .group-title { margin-bottom: 12px; }
.entry[data-changed] td:first-child { box-shadow: inset 3px 0 0 var(--accent); }
.entry.conflict td { background: color-mix(in srgb, #d97706 14%, transparent); }
.entry td input { width: 110px; text-align: right; padding: 5px 7px; }
.entry td input.note { width: 160px; text-align: left; }
.fx-inputs { display: flex; gap: 16px; flex-wrap: wrap; }
.fx-inputs label { flex-direction: row; align-items: center; }
.fx-inputs input { width: 110px; text-align: right; }

.empty { background: var(--surface); border: 1px dashed var(--border); border-radius: var(--radius); padding: 40px; text-align: center; color: var(--muted); }
.hint { color: var(--muted); font-size: 13px; }

dialog {
  border: 1px solid var(--border); border-radius: 14px; padding: 0; width: min(640px, calc(100vw - 32px));
  background: var(--surface); color: var(--text);
}
dialog::backdrop { background: rgba(10, 14, 20, .45); }
dialog form { padding: 20px; display: flex; flex-direction: column; gap: 12px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.form-grid-span { grid-column: 1 / -1; }
#holding-attrs { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
#holding-attrs:empty { display: none; }
.field-row { display: grid; grid-template-columns: 1fr 120px auto; gap: 8px; margin-bottom: 8px; }
.field-row .field-options { grid-column: 1 / -1; }
.entry td.extra select, .entry td.extra input { width: 90px; padding: 5px 6px; }
.dlg-actions { display: flex; gap: 8px; align-items: center; margin-top: 4px; }
.form-error { color: var(--danger); margin: 0; min-height: 1em; font-size: 13px; }

#toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%) translateY(20px);
  background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 8px;
  opacity: 0; transition: .2s; pointer-events: none; z-index: 100;
}
#toast.show { opacity: 1; transform: translateX(-50%); }
#toast.error { background: var(--danger); color: #fff; }

@media (max-width: 860px) {
  .grid-2 { grid-template-columns: 1fr; }
  .kpis { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .topbar, main { padding-left: 16px; padding-right: 16px; }
  .topbar { gap: 8px; }
  .kpis { grid-template-columns: 1fr; }
  .form-grid, #holding-attrs { grid-template-columns: 1fr; }
}