:root {
    color-scheme: light;
    --ink: #17202a;
    --muted: #657282;
    --line: #d9e1ea;
    --wash: #eef3f8;
    --surface: #ffffff;
    --nav: #111827;
    --danger: #b42318;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--wash); color: var(--ink); font-family: Arial, Helvetica, sans-serif; font-size: 14px; }
button:not(.btn), input:not(.form-control), select:not(.form-select) { min-height: 36px; border: 1px solid var(--line); border-radius: 6px; padding: 7px 10px; font: inherit; }
button:not(.btn) { background: var(--nav); color: #fff; cursor: pointer; font-weight: 700; }
a { color: inherit; text-decoration: none; cursor: pointer; }
.auth-page { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login-card { width: min(100%, 420px); padding: 26px; background: #fff; border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 18px 48px rgba(15, 23, 42, .12); }
.login-card form, .record-form { display: grid; gap: 12px; }
label { display: grid; gap: 5px; color: var(--muted); font-size: 12px; font-weight: 700; }
label input { width: 100%; }
.eyebrow { margin: 0 0 4px; color: var(--muted); text-transform: uppercase; font-size: 11px; font-weight: 800; }
.notice { margin: 8px 0; color: var(--muted); }
.notice.error { color: var(--danger); }
.sidebar { position: fixed; inset: 0 auto 0 0; width: 260px; overflow: auto; padding: 16px 12px; background: var(--nav); color: #fff; }
.brand { display: grid; gap: 3px; padding: 10px; margin-bottom: 12px; }
.brand span { color: #aab4c2; font-size: 12px; }
.sidebar nav { display: grid; gap: 4px; }
.sidebar a { display: block; padding: 9px 10px; border-radius: 6px; color: #e6edf5; font-weight: 700; }
.sidebar a:hover { background: rgba(255,255,255,.10); }
.main { margin-left: 260px; min-height: 100vh; }
.topbar { min-height: 70px; display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 12px 22px; background: #fff; border-bottom: 1px solid var(--line); }
h1, h2 { margin: 0; letter-spacing: 0; }
.workspace { padding: 18px 22px; }
.panel, .empty-state { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 14px; }
.list-head, .pager, .grid-tools, .list-actions, .row-actions { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px; margin-bottom: 12px; }
.list-actions, .row-actions { justify-content: flex-start; margin-bottom: 0; }
.grid-title-row { align-items: center; gap: 12px; }
.grid-title-row .card-actions { margin-left: auto; }
.branch-title-filter { margin: 0; min-width: min(320px, 100%); }
.branch-title-filter .input-group { flex-wrap: nowrap; }
.branch-title-filter .form-select { min-width: 190px; }
.button-blue { background: #2563eb; border-color: #2563eb; }
.button-green { background: #0f766e; border-color: #0f766e; }
.button-danger { background: #b42318; border-color: #b42318; }
.muted { margin: 4px 0 0; color: var(--muted); }
.grid-tools { justify-content: flex-start; }
.quick-views { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.excel-toolbar { display: flex; align-items: end; gap: 8px; flex-wrap: wrap; margin: 0; }
.excel-toolbar .btn, .excel-toolbar .form-control, .excel-toolbar .form-select { min-height: 34px; }
.search-control { min-width: min(340px, 100%); max-width: 420px; flex: 1 1 260px; }
.record-count { min-height: 34px; display: inline-flex; align-items: center; white-space: nowrap; }
.inline-filter { display: flex; align-items: center; gap: 7px; min-height: 36px; color: var(--muted); }
.inline-filter select { min-width: 180px; background: #fff; }
.filters { margin-bottom: 12px; }
.filter-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px; margin-top: 10px; }
.table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: 6px; background: #fff; }
.excel-wrap { max-height: calc(100vh - 290px); min-height: 360px; border-top: 1px solid var(--line); }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 8px 9px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; white-space: nowrap; }
.excel-grid { border-collapse: separate; border-spacing: 0; margin: 0; }
.excel-grid th, .excel-grid td { border-right: 1px solid #d8dee9; border-bottom: 1px solid #d8dee9; }
.excel-grid th:first-child, .excel-grid td:first-child { border-left: 1px solid #d8dee9; }
.excel-grid thead th { position: sticky; top: 0; z-index: 3; background: #eef3f8; color: #334155; font-size: 12px; font-weight: 800; box-shadow: inset 0 -1px 0 #cbd5e1; }
.excel-grid tbody tr:nth-child(even) td { background: #f8fbff; }
.excel-grid tbody tr:nth-child(odd) td { background: #fff; }
.excel-grid tbody tr:hover td { background: #eaf2ff; }
.excel-grid .actions-col, .excel-grid .row-actions { position: sticky; right: 0; z-index: 2; background: inherit; box-shadow: -1px 0 0 #d8dee9; }
.excel-grid thead .actions-col { z-index: 4; background: #eef3f8; }
th { position: sticky; top: 0; background: #f8fafc; z-index: 1; color: var(--muted); font-size: 12px; }
td { max-width: 320px; overflow: hidden; text-overflow: ellipsis; }
.select-col { width: 42px; text-align: center; }
.actions-col { min-width: 190px; }
.record-link { color: #2563eb; font-weight: 800; }
.record-link:hover { text-decoration: underline; }
.record-form { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.form-actions { grid-column: 1 / -1; }
.kpi-card { min-height: 104px; overflow: hidden; border: 0; color: #fff; box-shadow: 0 10px 24px rgba(15, 23, 42, .10); }
.kpi-card .subheader, .kpi-card .h1 { color: #fff; }
.kpi-blue { background: linear-gradient(135deg, #2563eb, #38bdf8); }
.kpi-green { background: linear-gradient(135deg, #0f766e, #22c55e); }
.kpi-orange { background: linear-gradient(135deg, #ea580c, #f59e0b); }
.kpi-purple { background: linear-gradient(135deg, #7c3aed, #db2777); }
.kpi-cyan { background: linear-gradient(135deg, #0891b2, #14b8a6); }
.kpi-pink { background: linear-gradient(135deg, #be185d, #f43f5e); }
.kpi-lime { background: linear-gradient(135deg, #4d7c0f, #84cc16); }
.kpi-red { background: linear-gradient(135deg, #b91c1c, #f97316); }
.detail-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 10px; margin: 0; }
.detail-grid div { padding: 10px; border: 1px solid var(--line); border-radius: 6px; background: #f8fafc; }
.detail-grid dt { color: var(--muted); font-size: 12px; font-weight: 800; }
.detail-grid dd { margin: 4px 0 0; overflow-wrap: anywhere; }
.related-panel { margin-top: 16px; }
.related-panel h3 { margin: 0 0 10px; }
.related-tabs { display: grid; gap: 8px; }
.related-tabs > input { position: absolute; opacity: 0; pointer-events: none; }
.related-tab-list { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-start; }
.related-tab-label { display: inline-flex; align-items: center; gap: 7px; min-height: 34px; padding: 7px 10px; border: 1px solid var(--line); border-radius: 6px; background: #fff; color: var(--ink); cursor: pointer; }
.related-tab-label span { color: inherit; font-weight: 800; }
.related-tab-body { display: none; }
.related-tabs > input:nth-of-type(1):checked ~ .related-tab-list .related-tab-label-0,
.related-tabs > input:nth-of-type(2):checked ~ .related-tab-list .related-tab-label-1,
.related-tabs > input:nth-of-type(3):checked ~ .related-tab-list .related-tab-label-2,
.related-tabs > input:nth-of-type(4):checked ~ .related-tab-list .related-tab-label-3,
.related-tabs > input:nth-of-type(5):checked ~ .related-tab-list .related-tab-label-4,
.related-tabs > input:nth-of-type(6):checked ~ .related-tab-list .related-tab-label-5,
.related-tabs > input:nth-of-type(7):checked ~ .related-tab-list .related-tab-label-6,
.related-tabs > input:nth-of-type(8):checked ~ .related-tab-list .related-tab-label-7,
.related-tabs > input:nth-of-type(9):checked ~ .related-tab-list .related-tab-label-8,
.related-tabs > input:nth-of-type(10):checked ~ .related-tab-list .related-tab-label-9,
.related-tabs > input:nth-of-type(11):checked ~ .related-tab-list .related-tab-label-10,
.related-tabs > input:nth-of-type(12):checked ~ .related-tab-list .related-tab-label-11 { background: #2563eb; border-color: #2563eb; color: #fff; }
.related-tabs > input:nth-of-type(1):checked ~ .related-tab-bodies .related-tab-body-0,
.related-tabs > input:nth-of-type(2):checked ~ .related-tab-bodies .related-tab-body-1,
.related-tabs > input:nth-of-type(3):checked ~ .related-tab-bodies .related-tab-body-2,
.related-tabs > input:nth-of-type(4):checked ~ .related-tab-bodies .related-tab-body-3,
.related-tabs > input:nth-of-type(5):checked ~ .related-tab-bodies .related-tab-body-4,
.related-tabs > input:nth-of-type(6):checked ~ .related-tab-bodies .related-tab-body-5,
.related-tabs > input:nth-of-type(7):checked ~ .related-tab-bodies .related-tab-body-6,
.related-tabs > input:nth-of-type(8):checked ~ .related-tab-bodies .related-tab-body-7,
.related-tabs > input:nth-of-type(9):checked ~ .related-tab-bodies .related-tab-body-8,
.related-tabs > input:nth-of-type(10):checked ~ .related-tab-bodies .related-tab-body-9,
.related-tabs > input:nth-of-type(11):checked ~ .related-tab-bodies .related-tab-body-10,
.related-tabs > input:nth-of-type(12):checked ~ .related-tab-bodies .related-tab-body-11 { display: block; }
.related-table button { min-height: 30px; padding: 5px 8px; }
.merge-group { margin-top: 14px; padding: 12px; border: 1px solid var(--line); border-radius: 8px; background: #f8fafc; }
.merge-summary { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.merge-summary h3 { margin: 0; }
.keeper-col { background: #ecfdf5; color: #0f766e; }
.badge { display: inline-flex; align-items: center; min-height: 26px; padding: 3px 8px; border-radius: 999px; background: #dbeafe; color: #1d4ed8; font-size: 12px; font-weight: 800; }
.merge-ref { margin-top: 10px; }
.merge-ref h4 { margin: 0 0 6px; }
.merge-ref p { margin: 4px 0; }
.dashboard-chart-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.chart-card { min-height: 300px; }
.chart-wide { grid-column: 1 / -1; }
.mini-stat.invoice { background: #2563eb; }
.mini-stat.payment { background: #0f766e; }
.month-amount-chart { display: grid; gap: 12px; }
.month-amount-row { display: grid; grid-template-columns: 82px minmax(0, 1fr); gap: 12px; align-items: center; }
.month-amount-label { color: #334155; font-size: 12px; font-weight: 800; white-space: nowrap; }
.month-amount-bars { display: grid; gap: 7px; }
.month-amount-bars > div { display: grid; grid-template-columns: 62px minmax(160px, 1fr) 92px; gap: 9px; align-items: center; }
.amount-key { font-size: 11px; font-weight: 800; text-transform: uppercase; }
.amount-key.invoice { color: #2563eb; }
.amount-key.payment { color: #0f766e; }
.amount-track { height: 18px; border-radius: 4px; background: #e5e7eb; overflow: hidden; box-shadow: inset 0 0 0 1px rgba(15, 23, 42, .04); }
.amount-track span { display: block; height: 100%; border-radius: inherit; min-width: 0; }
.amount-track span.invoice { background: linear-gradient(90deg, #2563eb, #60a5fa); }
.amount-track span.payment { background: linear-gradient(90deg, #0f766e, #2dd4bf); }
.month-amount-bars strong { text-align: right; font-size: 12px; color: #334155; font-variant-numeric: tabular-nums; }
.line-chart-wrap { width: 100%; overflow-x: auto; }
.amount-line-chart { width: 100%; min-width: 660px; height: auto; display: block; }
.amount-line-chart .axis { stroke: #94a3b8; stroke-width: 1.2; }
.amount-line-chart .grid-line { stroke: #e2e8f0; stroke-width: 1; }
.amount-line-chart .invoice-line, .amount-line-chart .payment-line { fill: none; stroke-width: 3; stroke-linejoin: round; stroke-linecap: round; }
.amount-line-chart .invoice-line { stroke: #2563eb; }
.amount-line-chart .payment-line { stroke: #0f766e; }
.amount-line-chart .invoice-point { fill: #2563eb; }
.amount-line-chart .payment-point { fill: #0f766e; }
.amount-line-chart text { fill: #64748b; font-size: 11px; font-weight: 700; }
.chart-legend { display: flex; gap: 16px; align-items: center; margin-top: 10px; color: var(--muted); font-size: 12px; font-weight: 700; }
.chart-legend span { display: inline-flex; align-items: center; gap: 6px; }
.chart-legend i.invoice { background: #2563eb; }
.chart-legend i.payment { background: #0f766e; }
.chart-legend i, .donut-list i { width: 10px; height: 10px; display: inline-block; border-radius: 999px; }
.hchart { display: grid; gap: 10px; }
.hchart-row { display: grid; grid-template-columns: minmax(110px, 1fr) minmax(120px, 2fr) 48px; gap: 10px; align-items: center; }
.hchart-label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: #334155; font-weight: 700; }
.hchart-track { height: 13px; border-radius: 999px; background: #e5e7eb; overflow: hidden; }
.hchart-track span { display: block; height: 100%; border-radius: inherit; background: linear-gradient(90deg, #0ea5e9, #22c55e); }
.donut-layout { display: grid; grid-template-columns: 180px minmax(0, 1fr); gap: 18px; align-items: center; }
.donut { width: 170px; aspect-ratio: 1; display: grid; place-items: center; position: relative; }
.donut-svg { width: 170px; height: 170px; display: block; transform: rotate(-90deg); }
.donut-bg { fill: none; stroke: #e5e7eb; stroke-width: 16; }
.donut-segment { fill: none; stroke-width: 16; stroke-linecap: butt; }
.donut span { position: absolute; z-index: 1; font-size: 24px; font-weight: 800; color: #17202a; }
.donut-list { display: grid; gap: 8px; min-width: 0; }
.donut-list div { display: grid; grid-template-columns: 12px minmax(0, 1fr) auto; align-items: center; gap: 8px; }
.donut-list span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.finance-tabs { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-start; }
.finance-tabs > input { position: absolute; opacity: 0; pointer-events: none; }
.finance-tabs > label { display: inline-flex; align-items: center; min-height: 34px; padding: 7px 12px; border: 1px solid var(--line); border-radius: 6px; background: #fff; color: #334155; cursor: pointer; font-size: 12px; font-weight: 800; }
.finance-tabs > input:checked + label { background: #2563eb; border-color: #2563eb; color: #fff; }
.finance-tabs > section { display: none; flex-basis: 100%; padding-top: 6px; }
.finance-tabs > input:checked + label + section { display: block; }
.metric-stack { display: grid; gap: 10px; }
.mini-stat { border-radius: 8px; padding: 12px; background: #f1f5f9; color: #17202a; display: grid; gap: 4px; }
.mini-stat span { color: inherit; opacity: .82; font-size: 12px; font-weight: 800; text-transform: uppercase; }
.mini-stat strong { font-size: 22px; line-height: 1.1; }
.metric-stack .mini-stat { color: #fff; }
.mini-stat.due { background: #ea580c; color: #fff; }
.attendance-table { max-height: calc(100vh - 310px); }
@media (max-width: 860px) {
    .sidebar { position: static; width: auto; }
    .main { margin-left: 0; }
    .grid-title-row { align-items: stretch; }
    .grid-title-row .card-actions { width: 100%; margin-left: 0; }
    .branch-title-filter { width: 100%; }
    .dashboard-chart-grid { grid-template-columns: 1fr; }
    .month-amount-row { grid-template-columns: 1fr; gap: 6px; }
    .month-amount-bars > div { grid-template-columns: 58px minmax(90px, 1fr); }
    .month-amount-bars strong { grid-column: 2; text-align: left; }
    .donut-layout { grid-template-columns: 1fr; justify-items: center; }
    .donut-list { width: 100%; }
}