export const formatCurrency = (amount: number): string => {
  return new Intl.NumberFormat('ko-KR', {
    style: 'currency',
    currency: 'KRW',
    maximumFractionDigits: 0
  }).format(amount);
};

export const calculatePercentage = (spent: number, target: number): number => {
  // 타겟이 0이면 0%를 반환하도록 수정
  if (target === 0 || isNaN(target)) return 0;
  return Math.min(Math.round(spent / target * 100), 100);
};