* { box-sizing: border-box; }
:root {
    --bg: #f4f6f8;
    --card: #ffffff;
    --text: #172033;
    --muted: #667085;
    --border: #d9e0ea;
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --danger: #dc2626;
    --success: #15803d;
    --warning: #d97706;
    --shadow: 0 10px 30px rgba(15, 23, 42, .08);
}
body { margin: 0; font-family: Segoe UI, Tahoma, Arial, sans-serif; background: var(--bg); color: var(--text); }
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.topbar { background: #111827; color: #fff; display: flex; align-items: center; justify-content: space-between; padding: 14px 22px; gap: 16px; flex-wrap: wrap; }
.brand a { color: #fff; font-weight: 700; font-size: 20px; }
.topbar nav { display: flex; flex-wrap: wrap; gap: 10px; }
.topbar nav a { color: #e5e7eb; padding: 8px 10px; border-radius: 10px; }
.topbar nav a:hover { background: rgba(255,255,255,.08); text-decoration: none; }
.container { max-width: 1220px; margin: 28px auto; padding: 0 18px; }
.footer { text-align: center; color: var(--muted); padding: 24px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 18px; box-shadow: var(--shadow); padding: 22px; margin-bottom: 20px; }
.card h1, .card h2, .card h3 { margin-top: 0; }
.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: 18px; padding: 18px; box-shadow: var(--shadow); }
.stat .label { color: var(--muted); font-size: 14px; }
.stat .value { font-size: 28px; font-weight: 800; margin-top: 8px; }
.value.positive { color: var(--success); }
.value.negative { color: var(--danger); }
.form-row { display: grid; grid-template-columns: 180px 1fr; gap: 12px; align-items: center; margin-bottom: 12px; }
label { font-weight: 600; }
input[type=text], input[type=password], input[type=file], input[type=date], input[type=color], select, textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; background: #fff; font: inherit; }
textarea { min-height: 80px; }
button, .btn { border: 0; background: var(--primary); color: #fff; padding: 10px 14px; border-radius: 10px; font-weight: 700; cursor: pointer; display: inline-block; }
button:hover, .btn:hover { background: var(--primary-dark); text-decoration: none; }
.btn-secondary { background: #475569; }
.btn-danger { background: var(--danger); }
.btn-small { padding: 6px 9px; font-size: 13px; }
.actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.alert { padding: 12px 14px; border-radius: 12px; margin-bottom: 14px; border: 1px solid; }
.alert-success { background: #ecfdf5; color: #065f46; border-color: #a7f3d0; }
.alert-error { background: #fef2f2; color: #991b1b; border-color: #fecaca; }
.alert-info { background: #eff6ff; color: #1e40af; border-color: #bfdbfe; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; background: #fff; }
th, td { padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { text-align: left; color: #344054; font-size: 13px; background: #f8fafc; position: sticky; top: 0; }
.amount { text-align: right; white-space: nowrap; font-weight: 700; }
.amount.positive { color: var(--success); }
.amount.negative { color: var(--danger); }
.badge { display: inline-flex; align-items: center; gap: 6px; border-radius: 999px; padding: 4px 8px; background: #eef2ff; color: #3730a3; font-size: 12px; font-weight: 700; }
.filters { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; align-items: end; }
.login-box { max-width: 420px; margin: 60px auto; }
.help { color: var(--muted); font-size: 14px; }
@media (max-width: 850px) { .grid-2, .grid-3, .filters { grid-template-columns: 1fr; } .form-row { grid-template-columns: 1fr; } .topbar { align-items: flex-start; } }
@media print { .topbar, .footer, .no-print, button, .btn { display: none !important; } body { background: #fff; } .card { box-shadow: none; border: 0; } .container { max-width: none; margin: 0; } }