body {
    font-family: -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    background: #f5f6f8;
}
.sidebar .nav-link { border-radius: 6px; }
.sidebar .nav-link.active,
.sidebar .nav-link:hover { background: rgba(255,255,255,0.15); }
.card { border: 1px solid #e5e7eb; }

/* --- Printable receipt: sized for an 80mm thermal roll, prints cleanly --- */
.receipt-wrap {
    max-width: 320px;
    margin: 20px auto;
    background: #fff;
    padding: 16px;
    border: 1px solid #ddd;
}
.receipt { font-family: "Courier New", monospace; font-size: 12px; }
.receipt table { border-collapse: collapse; }
.receipt hr { border-top: 1px dashed #999; }

@media print {
    body { background: #fff; }
    .receipt-wrap { border: none; margin: 0; max-width: 80mm; padding: 0; }
    .no-print { display: none !important; }
    @page { margin: 0; size: 80mm auto; }
}