:root {
  --bg: #f4f6f9; --card: #fff; --ink: #1f2937; --muted: #6b7280; --line: #e5e7eb;
  --brand: #1e3a5f; --brand-2: #2d5a8e; --green: #15803d; --red: #b91c1c; --amber: #b45309;
}
* { box-sizing: border-box; }
body { margin: 0; font: 14px/1.5 "Segoe UI", system-ui, sans-serif; background: var(--bg); color: var(--ink); }
a { color: var(--brand-2); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar { background: var(--brand); color: #fff; display: flex; align-items: center; gap: 24px; padding: 0 24px; height: 56px; }
.topbar .logo { font-weight: 700; font-size: 16px; white-space: nowrap; }
.topbar nav { display: flex; gap: 4px; flex: 1; overflow-x: auto; }
.topbar nav a { color: #cfdcec; padding: 8px 12px; border-radius: 6px; white-space: nowrap; }
.topbar nav a:hover, .topbar nav a.active { background: rgba(255,255,255,.12); color: #fff; text-decoration: none; }
.topbar .user { font-size: 13px; color: #cfdcec; white-space: nowrap; }
.topbar .user a { color: #fff; margin-left: 10px; }

main { max-width: 1240px; margin: 24px auto; padding: 0 20px; }
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 16px; margin: 0 0 12px; }
.sub { color: var(--muted); margin: 0 0 20px; }
.page-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; flex-wrap: wrap; margin-bottom: 20px; }
.page-head .sub { margin: 0; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 20px; margin-bottom: 20px; }
.grid { display: grid; gap: 16px; }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(360px, 1fr)); }

.stat { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; }
.stat .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.stat .value { font-size: 22px; font-weight: 700; margin-top: 4px; font-variant-numeric: tabular-nums; }
.pos { color: var(--green); } .neg { color: var(--red); }

table { width: 100%; border-collapse: collapse; }
th, td { padding: 9px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); background: #f9fafb; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
tr.void td { color: #9ca3af; text-decoration: line-through; }
tr.void td.keep { text-decoration: none; }
tfoot td { font-weight: 700; background: #f9fafb; }
.table-wrap { overflow-x: auto; }

.badge { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.b-income { background: #dcfce7; color: var(--green); }
.b-expense { background: #fee2e2; color: var(--red); }
.b-open { background: #dbeafe; color: #1d4ed8; }
.b-closed { background: #e5e7eb; color: #374151; }
.b-void { background: #fef3c7; color: var(--amber); }

.btn { display: inline-block; border: 1px solid var(--line); background: #fff; color: var(--ink); padding: 7px 14px; border-radius: 7px; font: inherit; cursor: pointer; white-space: nowrap; }
.btn:hover { background: #f3f4f6; text-decoration: none; }
.btn-primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-2); }
.btn-green { background: var(--green); border-color: var(--green); color: #fff; }
.btn-green:hover { background: #166534; }
.btn-red { background: var(--red); border-color: var(--red); color: #fff; }
.btn-red:hover { background: #991b1b; }
.btn-sm { padding: 4px 10px; font-size: 13px; }

form.stack label { display: block; font-weight: 600; font-size: 13px; margin-bottom: 4px; }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px 18px; }
.form-grid .full { grid-column: 1 / -1; }
input, select, textarea { width: 100%; padding: 8px 10px; border: 1px solid #cbd5e1; border-radius: 7px; font: inherit; background: #fff; }
input:focus, select:focus, textarea:focus { outline: 2px solid #93c5fd; border-color: #60a5fa; }
textarea { min-height: 70px; resize: vertical; }
.hint { color: var(--muted); font-size: 12px; font-weight: 400; }
.filters { display: flex; gap: 10px; flex-wrap: wrap; align-items: flex-end; }
.filters > div { min-width: 140px; }
.filters label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 3px; }

.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; border: 1px solid; }
.flash.success { background: #f0fdf4; border-color: #bbf7d0; color: #166534; }
.flash.danger { background: #fef2f2; border-color: #fecaca; color: #991b1b; }
.flash.warning { background: #fffbeb; border-color: #fde68a; color: #92400e; }
.flash.info { background: #eff6ff; border-color: #bfdbfe; color: #1e40af; }

dl.kv { display: grid; grid-template-columns: 170px 1fr; gap: 8px 16px; margin: 0; }
dl.kv dt { color: var(--muted); }
dl.kv dd { margin: 0; }

.bar { height: 8px; background: #e5e7eb; border-radius: 4px; overflow: hidden; margin-top: 6px; }
.bar > span { display: block; height: 100%; background: var(--brand-2); }
.bar.over > span { background: var(--red); }

.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 20px; }
.login-card { width: 100%; max-width: 380px; }
.empty { text-align: center; color: var(--muted); padding: 30px; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.mono { font-family: Consolas, monospace; font-size: 13px; }
details summary { cursor: pointer; }

@media (max-width: 700px) {
  .topbar { flex-wrap: wrap; height: auto; padding: 10px 16px; gap: 8px; }
  main { padding: 0 16px; }
  dl.kv { grid-template-columns: 1fr; }
}

/* offline app additions */
.offline-bar { background: #92400e; color: #fff; text-align: center; padding: 6px 12px; font-size: 13px; }
.topbar .user a { cursor: pointer; }
.chain-ok { color: var(--green); font-weight: 600; }
.chain-bad { color: var(--red); font-weight: 600; }
.notice { background: #fffbeb; border: 1px solid #fde68a; color: #92400e; border-radius: 8px; padding: 10px 14px; margin-bottom: 16px; }
.notice a { color: #92400e; font-weight: 600; }