:root {
  --bg: #f1f5f4;
  --card: #fff;
  --text: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --teal: #0f766e;
  --teal-soft: #ccfbf1;
  --red: #be123c;
  --red-soft: #ffe4e6;
  --green: #15803d;
  --green-soft: #dcfce7;
  --amber: #b45309;
  --amber-soft: #fef3c7;
  --shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  --radius: 14px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  font-family: "PingFang TC", "Noto Sans TC", "Segoe UI", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  min-height: 100%;
}
button, input, select { font: inherit; }

#app {
  max-width: 920px;
  margin: 0 auto;
  padding: 16px 16px calc(40px + var(--safe-bottom));
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}
.brand {
  margin: 0;
  color: var(--teal);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.topbar h1 {
  margin: 2px 0 0;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}
.subtitle {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.icon-btn {
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card);
  cursor: pointer;
  font-size: 1.15rem;
}

.tabs {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 8px;
  margin-bottom: 12px;
  -webkit-overflow-scrolling: touch;
}
.tab {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 999px;
  padding: 8px 14px;
  white-space: nowrap;
  cursor: pointer;
  color: var(--muted);
  font-weight: 600;
  font-size: 0.9rem;
}
.tab.active {
  background: var(--teal);
  border-color: var(--teal);
  color: #fff;
}

.panel { display: none; }
.panel.active { display: block; }

.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  margin-bottom: 12px;
}
.card h2, .form h2 {
  margin: 0 0 8px;
  font-size: 1.1rem;
}
.hint, .muted { color: var(--muted); font-size: 0.88rem; }
.form { display: flex; flex-direction: column; gap: 12px; }

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}
.field span { color: var(--muted); font-size: 0.85rem; }
.field input, .field select {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 11px 12px;
  background: #fff;
  width: 100%;
}
.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.field.grow { flex: 1; }

.lines-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.lines-head h3 { margin: 0; font-size: 1rem; }

.lines { display: flex; flex-direction: column; gap: 8px; }
.line-row {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr auto;
  gap: 8px;
  align-items: end;
  background: var(--bg);
  border-radius: 12px;
  padding: 10px;
}
.line-row .field span { font-size: 0.75rem; }

.balance-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  background: var(--bg);
  border-radius: 12px;
  padding: 12px;
  font-size: 0.92rem;
}
.balance-bar strong { font-variant-numeric: tabular-nums; }

.badge {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
}
.badge.ok { background: var(--green-soft); color: var(--green); }
.badge.bad { background: var(--red-soft); color: var(--red); }
.badge.void { background: var(--amber-soft); color: var(--amber); }

.quick { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.chip {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 6px 12px;
  cursor: pointer;
  font-size: 0.85rem;
}

.primary-btn {
  border: 0;
  background: var(--teal);
  color: #fff;
  border-radius: 12px;
  padding: 11px 16px;
  cursor: pointer;
  font-weight: 700;
}
.primary-btn.full { width: 100%; }
.primary-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.ghost-btn {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 10px;
  padding: 8px 12px;
  cursor: pointer;
}
.danger-btn {
  border: 0;
  background: var(--red-soft);
  color: var(--red);
  border-radius: 12px;
  padding: 10px 14px;
  cursor: pointer;
  font-weight: 600;
}

.error { color: var(--red); font-size: 0.9rem; margin: 0; }

.toolbar {
  display: flex;
  gap: 10px;
  align-items: end;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.check {
  display: flex;
  gap: 8px;
  align-items: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.entry-list { display: flex; flex-direction: column; gap: 10px; }
.entry-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px;
  cursor: pointer;
  border: 1px solid transparent;
}
.entry-card:active { border-color: var(--teal-soft); }
.entry-card header {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 6px;
}
.entry-card .id { font-weight: 700; color: var(--teal); }
.entry-card .desc { font-weight: 600; margin-bottom: 4px; }
.entry-card .meta { color: var(--muted); font-size: 0.85rem; }
.entry-card table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 8px;
  font-size: 0.88rem;
}
.entry-card td, .entry-card th {
  padding: 4px 0;
  border-top: 1px solid var(--line);
}
.entry-card .num { text-align: right; font-variant-numeric: tabular-nums; }

.table-wrap {
  overflow-x: auto;
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 560px;
}
.data-table th, .data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}
.data-table th {
  background: #f8fafc;
  color: var(--muted);
  font-weight: 600;
  font-size: 0.8rem;
}
.data-table .num { text-align: right; font-variant-numeric: tabular-nums; }
.data-table tr.zero { color: var(--muted); }
.data-table tfoot td { font-weight: 700; }

.summary-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.summary-row span {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
  margin-bottom: 4px;
}
.summary-row strong {
  font-size: 1.05rem;
  font-variant-numeric: tabular-nums;
}

.empty {
  text-align: center;
  color: var(--muted);
  padding: 32px 12px;
}

.foot {
  margin-top: 24px;
  text-align: center;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.5;
}

dialog.sheet {
  border: 0;
  border-radius: 18px 18px 0 0;
  padding: 0;
  width: min(100%, 720px);
  max-height: min(92vh, 900px);
  margin: auto 0 0 auto;
  box-shadow: 0 -12px 40px rgba(15, 23, 42, 0.18);
  overflow: auto;
}
dialog::backdrop { background: rgba(15, 23, 42, 0.45); }
.sheet-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 16px 8px;
  position: sticky;
  top: 0;
  background: #fff;
  z-index: 1;
}
.sheet-header h2 { margin: 0; font-size: 1.1rem; }
.sheet-body { padding: 0 16px 12px; }
.sheet-actions {
  display: flex;
  gap: 10px;
  padding: 0 16px calc(16px + var(--safe-bottom));
}
.menu-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0 12px calc(16px + var(--safe-bottom));
}
.menu-item {
  text-align: left;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 12px;
  padding: 14px;
  cursor: pointer;
}
.menu-item.danger {
  color: var(--red);
  background: var(--red-soft);
  border-color: #fecdd3;
}
.audit-pre {
  margin: 0 16px calc(16px + var(--safe-bottom));
  background: var(--bg);
  border-radius: 12px;
  padding: 12px;
  overflow: auto;
  font-size: 0.8rem;
  white-space: pre-wrap;
  max-height: 60vh;
}

@media (min-width: 720px) {
  dialog.sheet {
    border-radius: 18px;
    margin: auto;
    width: min(92vw, 560px);
  }
}
@media (max-width: 560px) {
  .line-row {
    grid-template-columns: 1fr 1fr;
  }
  .line-row .field:first-child { grid-column: 1 / -1; }
  .field-row { grid-template-columns: 1fr; }
  .summary-row { grid-template-columns: 1fr; }
}