export function formatCurrency(amount: number): string {
  return new Intl.NumberFormat('en-US', {
    style: 'currency',
    currency: 'USD',
    minimumFractionDigits: 0,
    maximumFractionDigits: 2,
  }).format(amount);
}

export function formatDate(date: string): string {
  const d = new Date(date);
  const now = new Date();
  const diff = now.getTime() - d.getTime();
  const minutes = Math.floor(diff / 60000);
  const hours = Math.floor(diff / 3600000);
  const days = Math.floor(diff / 86400000);

  if (minutes < 1) return 'Just now';
  if (minutes < 60) return `${minutes}m ago`;
  if (hours < 24) return `${hours}h ago`;
  if (days < 7) return `${days}d ago`;
  return d.toLocaleDateString('en-US', { month: 'short', day: 'numeric' });
}

export function formatDateFull(date: string): string {
  return new Date(date).toLocaleDateString('en-US', {
    year: 'numeric',
    month: 'long',
    day: 'numeric',
  });
}