fasto/components/KPICard.tsx

import React from 'react';
import { LucideIcon } from 'lucide-react';

interface KPICardProps {
  title: string;
  value: string | number;
  subValue?: string;
  trend?: 'up' | 'down' | 'neutral';
  trendValue?: string;
  icon: LucideIcon;
  colorClass?: string;
}

export const KPICard: React.FC<KPICardProps> = ({ title, value, subValue, trend, trendValue, icon: Icon, colorClass = "bg-blue-500" }) => {
  return (
    <div className="bg-white p-6 rounded-2xl shadow-sm border border-slate-100 flex flex-col justify-between hover:shadow-md transition-shadow duration-300">
      <div className="flex justify-between items-start mb-4">
        <div>
          <h3 className="text-slate-500 text-sm font-medium mb-1">{title}</h3>
          <div className="text-3xl font-bold text-slate-800 tracking-tight">{value}</div>
        </div>
        <div className={`p-3 rounded-xl ${colorClass} bg-opacity-10 text-opacity-100`}>
          {/* Note: In Tailwind bg-opacity works if colorClass is like 'bg-blue-500'. 
              Here we assume the consumer passes specific utility classes or we construct them.
              Simpler approach: Use a wrapper */}
           <div className={`w-8 h-8 flex items-center justify-center rounded-lg ${colorClass.replace('text', 'bg').replace('500', '100')} ${colorClass}`}>
             <Icon size={20} />
           </div>
        </div>
      </div>
      
      {(trend || subValue) && (
        <div className="flex items-center gap-2 text-sm mt-auto">
          {trend === 'up' && <span className="text-green-500 flex items-center font-medium">▲ {trendValue}</span>}
          {trend === 'down' && <span className="text-red-500 flex items-center font-medium">▼ {trendValue}</span>}
          {subValue && <span className="text-slate-400">{subValue}</span>}
        </div>
      )}
    </div>
  );
};