:root {
    --bg: #f5f7fb;
    --panel: #ffffff;
    --text: #172033;
    --muted: #64748b;
    --border: #e2e8f0;
    --primary: #1f4ed8;
    --primary-dark: #173ca5;
    --danger: #b42318;
    --success: #067647;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: Arial, Helvetica, sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--primary); text-decoration: none; }
.app-shell { min-height: 100vh; }
.topbar { background: var(--panel); border-bottom: 1px solid var(--border); padding: 16px 24px; display: flex; justify-content: space-between; align-items: center; }
.brand { font-weight: 700; letter-spacing: -0.02em; }
.nav { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.container { width: min(1120px, calc(100% - 32px)); margin: 32px auto; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 14px; padding: 24px; box-shadow: 0 10px 30px rgba(15, 23, 42, 0.06); }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.stat { background: #f8fafc; border: 1px solid var(--border); border-radius: 12px; padding: 18px; }
.stat strong { display: block; font-size: 28px; margin-top: 8px; }
.form { display: grid; gap: 14px; }
.form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.form-row-3 { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.form-row-4 { display: grid; grid-template-columns: 1.5fr 2fr 1fr 1fr; gap: 12px; align-items: end; }
.form-row-5 { display: grid; grid-template-columns: 2fr 0.7fr 0.9fr 0.7fr 1fr; gap: 12px; align-items: end; }
label { display: block; font-size: 14px; color: var(--muted); margin-bottom: 6px; }
input, select, textarea { width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: 10px; font-size: 15px; background: #fff; }
textarea { min-height: 90px; resize: vertical; }
button, .btn { display: inline-flex; justify-content: center; align-items: center; border: 0; border-radius: 10px; padding: 12px 16px; background: var(--primary); color: #fff; font-weight: 700; cursor: pointer; }
button:hover, .btn:hover { background: var(--primary-dark); }
.btn-light { background: #eef2ff; color: var(--primary); }
.btn-light:hover { background: #e0e7ff; }
.alert { border-radius: 10px; padding: 12px 14px; margin-bottom: 16px; }
.alert-danger { background: #fff1f0; color: var(--danger); border: 1px solid #ffccc7; }
.alert-success { background: #ecfdf3; color: var(--success); border: 1px solid #abefc6; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.table { width: 100%; border-collapse: collapse; margin-top: 16px; }
.table th, .table td { text-align: left; border-bottom: 1px solid var(--border); padding: 12px 8px; vertical-align: top; }
.table tfoot th, .table tfoot td { border-top: 2px solid var(--border); font-weight: 700; }
.text-right { text-align: right !important; }
.badge { display: inline-flex; padding: 4px 8px; border-radius: 999px; background: #eef2ff; color: var(--primary); font-size: 12px; font-weight: 700; }
.badge-muted { background: #f1f5f9; color: #475569; }
.badge-success { background: #ecfdf3; color: var(--success); }
.actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.page-header { display:flex; justify-content:space-between; align-items:flex-start; gap:16px; margin-bottom:18px; }
.line-box { background: #f8fafc; border: 1px solid var(--border); border-radius: 12px; padding: 14px; margin-bottom: 12px; }
.report-section { margin-top: 28px; }
.positive { color: var(--success); font-weight: 700; }
.negative { color: var(--danger); font-weight: 700; }
.searchbar { display:flex; gap:12px; align-items:end; margin: 18px 0; }
.searchbar .grow { flex: 1; }
@media print {
    .topbar, .actions, .btn, button, .searchbar { display: none !important; }
    body { background: #fff; }
    .container { width: 100%; margin: 0; }
    .card { box-shadow: none; border: 0; }
}
@media (max-width: 900px) {
    .grid, .grid-2, .form-row, .form-row-3, .form-row-4, .form-row-5 { grid-template-columns: 1fr; }
    .topbar { align-items: flex-start; gap: 12px; flex-direction: column; }
    .nav { align-items: flex-start; flex-direction: column; }
    .page-header { flex-direction:column; }
    .searchbar { flex-direction: column; align-items: stretch; }
}