export function stokOpnameDifference(physicalStock: number, systemStock: number): number { return physicalStock - systemStock; } export function stokOpnameDifferenceClass(difference: number): string { if (difference > 0) { return 'text-green-600 font-semibold'; } if (difference < 0) { return 'text-red-600 font-semibold'; } return 'text-muted-foreground'; } export function stokOpnameDifferenceText(difference: number): string { return `${difference > 0 ? '+' : ''}${difference}`; }