'use client'import React from 'react';import { PieChart } from 'lucide-react';import { motion } from 'motion/react';import { clsx, type ClassValue } from "clsx";import { twMerge } from "tailwind-merge";import { ResponsiveContainer, BarChart, Bar, Tooltip, XAxis, Cell } from 'recharts';function cn(...inputs: ClassValue[]) {  return twMerge(clsx(inputs));}interface ExamData {  grade: string;  count: number;  [key: string]: any;}interface ExamAnalysisCardProps {  className?: string;  title?: string;  avgLabel?: string;  avgScore?: string;  data?: ExamData[];}const DEFAULT_DATA: ExamData[] = [  { grade: 'A', count: 12 },  { grade: 'B', count: 18 },  { grade: 'C', count: 8 },  { grade: 'D', count: 4 },  { grade: 'F', count: 1 },];const DEFAULT_TITLE = "Exam Stats";const DEFAULT_AVG_LABEL = "Avg Score:";const DEFAULT_AVG_SCORE = "82%";export const ExamAnalysisCard: React.FC<ExamAnalysisCardProps> = ({  className = "",  title = DEFAULT_TITLE,  avgLabel = DEFAULT_AVG_LABEL,  avgScore = DEFAULT_AVG_SCORE,  data = DEFAULT_DATA,}) => {  return (    <motion.div      initial={{ opacity: 0, y: 20 }}      animate={{ opacity: 1, y: 0 }}      transition={{ duration: 0.5, delay: 0.1 }}      className={cn(        "relative overflow-hidden rounded-2xl border border-border bg-card text-card-foreground shadow-sm transition-all hover:border-primary/50 hover:shadow-md flex flex-col h-full",        className      )}    >      <div className="p-5 flex flex-col h-full relative z-10">        <div className="mb-4 flex items-start justify-between">          <div>            <h3 className="font-bold text-lg text-foreground">              {title}            </h3>            <div className="flex items-center gap-2 mt-1">              <span className="text-xs font-medium text-muted-foreground">                {avgLabel}              </span>              <span className="text-sm font-bold text-foreground">{avgScore}</span>            </div>          </div>          <div className="rounded-xl bg-blue-500/10 p-2.5 text-blue-500 dark:text-blue-400 flex items-center justify-center ring-1 ring-blue-100 dark:ring-blue-800">            <PieChart className="h-5 w-5" />          </div>        </div>        <div className="flex-1 w-full min-h-[100px]">          <ResponsiveContainer width="100%" height="100%">            <BarChart data={data} barSize={24}>              <XAxis                dataKey="grade"                axisLine={false}                tickLine={false}                tick={{ fontSize: 10, fill: '#71717a' }}              />              <Tooltip                cursor={{ fill: 'transparent' }}                content={({ active, payload }) => {                  if (active && payload && payload.length) {                    return (                      <div className="rounded-lg border border-zinc-200 dark:border-zinc-700 bg-white dark:bg-zinc-800 p-2 shadow-sm text-xs">                        <span className="font-bold">Grade {payload[0].payload.grade}:</span> {payload[0].value} students                      </div>                    );                  }                  return null;                }}              />              <Bar dataKey="count" radius={[4, 4, 0, 0]}>                {data.map((entry, index) => (                  <Cell key={`cell-${index}`} fill={index === 0 ? '#3b82f6' : index === 1 ? '#60a5fa' : '#94a3b8'} />                ))}              </Bar>            </BarChart>          </ResponsiveContainer>        </div>        <div className="absolute -bottom-4 -right-4 z-0 opacity-5 pointer-events-none">          <PieChart className="w-32 h-32 text-blue-500" />        </div>      </div>    </motion.div>  );};