"use client"

import { useState, useEffect } from "react"
import Link from "next/link"
import { Button } from "@/components/ui/button"
import { Card, CardContent, CardDescription, CardHeader, CardTitle } from "@/components/ui/card"
import { Badge } from "@/components/ui/badge"
import {
  Sparkles,
  ArrowLeft,
  BarChart3,
  TrendingUp,
  Users,
  Target,
  BookOpen,
  ChevronDown,
  ChevronUp,
  TrendingDown,
  Minus,
  Shield,
  Eye,
  EyeOff,
} from "lucide-react"
import RadarChart from "@/components/radar-chart"
import HeaderMusicControl from "@/components/header-music-control"
import { categories, categorizeWishMultiple, type Wish } from "@/lib/categorization"

interface CategoryData {
  name: string
  count: number
  percentage: number
  color: string
  keywords: string[]
  description?: string
  difficulty?: {
    level: number
    stars: string
    label: string
    estimatedTime: string
    techStack: string[]
    solutionType: string
    complexity: string
  }
}

interface AnalyticsData {
  totalWishes: number
  publicWishes: number
  privateWishes: number
  categories: CategoryData[]
  recentTrends: {
    thisWeek: number
    lastWeek: number
    growth: number
    growthLabel: string
    growthIcon: "up" | "down" | "flat"
    growthColor: string
  }
  topKeywords: { word: string; count: number }[]
}

export default function AnalyticsPage() {
  const [wishes, setWishes] = useState<Wish[]>([])
  const [analytics, setAnalytics] = useState<AnalyticsData | null>(null)
  const [showCategoryGuide, setShowCategoryGuide] = useState(false)

  // 分析許願內容（包含所有數據，包括私密的）
  const analyzeWishes = (wishList: (Wish & { isPublic?: boolean })[]): AnalyticsData => {
    const totalWishes = wishList.length
    const publicWishes = wishList.filter((wish) => wish.isPublic !== false).length
    const privateWishes = wishList.filter((wish) => wish.isPublic === false).length

    const categoryStats: { [key: string]: number } = {}
    const keywordCount: { [key: string]: number } = {}

    // 初始化分類統計
    categories.forEach((cat) => {
      categoryStats[cat.name] = 0
    })
    categoryStats["其他問題"] = 0

    // 分析每個許願（多標籤統計）- 包含所有數據
    wishList.forEach((wish) => {
      const wishCategories = categorizeWishMultiple(wish)

      wishCategories.forEach((category) => {
        categoryStats[category.name]++

        // 統計關鍵字
        if (category.keywords) {
          const fullText =
            `${wish.title} ${wish.currentPain} ${wish.expectedSolution} ${wish.expectedEffect}`.toLowerCase()
          category.keywords.forEach((keyword: string) => {
            if (fullText.includes(keyword.toLowerCase())) {
              keywordCount[keyword] = (keywordCount[keyword] || 0) + 1
            }
          })
        }
      })
    })

    // 計算百分比和準備數據
    const categoriesData: CategoryData[] = categories.map((cat) => ({
      name: cat.name,
      count: categoryStats[cat.name] || 0,
      percentage: totalWishes > 0 ? Math.round(((categoryStats[cat.name] || 0) / totalWishes) * 100) : 0,
      color: cat.color,
      keywords: cat.keywords,
      description: cat.description,
    }))

    // 改進的趨勢計算
    const now = new Date()
    const oneWeekAgo = new Date(now.getTime() - 7 * 24 * 60 * 60 * 1000)
    const twoWeeksAgo = new Date(now.getTime() - 14 * 24 * 60 * 60 * 1000)

    const thisWeek = wishList.filter((wish) => new Date(wish.createdAt) >= oneWeekAgo).length
    const lastWeek = wishList.filter((wish) => {
      const date = new Date(wish.createdAt)
      return date >= twoWeeksAgo && date < oneWeekAgo
    }).length

    // 改進的成長趨勢計算
    let growth = 0
    let growthLabel = "持平"
    let growthIcon: "up" | "down" | "flat" = "flat"
    let growthColor = "#6B7280"

    if (lastWeek === 0 && thisWeek > 0) {
      // 上週沒有，本週有 → 全新開始
      growth = 100
      growthLabel = "開始增長"
      growthIcon = "up"
      growthColor = "#10B981"
    } else if (lastWeek === 0 && thisWeek === 0) {
      // 兩週都沒有
      growth = 0
      growthLabel = "尚無數據"
      growthIcon = "flat"
      growthColor = "#6B7280"
    } else if (lastWeek > 0) {
      // 正常計算成長率
      growth = Math.round(((thisWeek - lastWeek) / lastWeek) * 100)

      if (growth > 0) {
        growthLabel = "持續增長"
        growthIcon = "up"
        growthColor = "#10B981"
      } else if (growth < 0) {
        growthLabel = "有所下降"
        growthIcon = "down"
        growthColor = "#EF4444"
      } else {
        growthLabel = "保持穩定"
        growthIcon = "flat"
        growthColor = "#6B7280"
      }
    }

    // 取得熱門關鍵字
    const topKeywords = Object.entries(keywordCount)
      .sort(([, a], [, b]) => b - a)
      .slice(0, 15)
      .map(([word, count]) => ({ word, count }))

    return {
      totalWishes,
      publicWishes,
      privateWishes,
      categories: categoriesData,
      recentTrends: {
        thisWeek,
        lastWeek,
        growth,
        growthLabel,
        growthIcon,
        growthColor,
      },
      topKeywords,
    }
  }

  useEffect(() => {
    const savedWishes = JSON.parse(localStorage.getItem("wishes") || "[]")
    setWishes(savedWishes)
    setAnalytics(analyzeWishes(savedWishes))
  }, [])

  if (!analytics) {
    return (
      <div className="min-h-screen bg-gradient-to-b from-slate-900 via-blue-900 to-indigo-900 flex items-center justify-center">
        <div className="text-white text-xl">正在分析數據...</div>
      </div>
    )
  }

  // 根據成長趨勢選擇圖標
  const GrowthIcon =
    analytics.recentTrends.growthIcon === "up"
      ? TrendingUp
      : analytics.recentTrends.growthIcon === "down"
        ? TrendingDown
        : Minus

  return (
    <div className="min-h-screen bg-gradient-to-b from-slate-900 via-blue-900 to-indigo-900 relative overflow-hidden">
      {/* 星空背景 */}
      <div className="absolute inset-0 overflow-hidden pointer-events-none">
        {[...Array(30)].map((_, i) => (
          <div
            key={i}
            className="absolute w-0.5 h-0.5 md:w-1 md:h-1 bg-white rounded-full animate-pulse"
            style={{
              left: `${Math.random() * 100}%`,
              top: `${Math.random() * 100}%`,
              animationDelay: `${Math.random() * 3}s`,
              animationDuration: `${2 + Math.random() * 2}s`,
            }}
          />
        ))}
        <div className="absolute top-1/4 right-1/3 w-64 h-64 md:w-96 md:h-96 bg-gradient-radial from-purple-400/20 via-blue-500/10 to-transparent rounded-full blur-3xl"></div>
      </div>

      {/* Header - 修復跑版問題 */}
      <header className="border-b border-blue-800/50 bg-slate-900/80 backdrop-blur-sm sticky top-0 z-50">
        <div className="container mx-auto px-3 sm:px-4 py-3 md:py-4">
          <div className="flex items-center justify-between gap-2">
            {/* Logo 區域 - 防止文字換行 */}
            <Link href="/" className="flex items-center gap-2 md:gap-3 min-w-0 flex-shrink-0">
              <div className="w-7 h-7 sm:w-8 sm:h-8 md:w-10 md:h-10 bg-gradient-to-br from-cyan-400 to-blue-500 rounded-full flex items-center justify-center shadow-lg shadow-cyan-500/25">
                <Sparkles className="w-3.5 h-3.5 sm:w-4 sm:h-4 md:w-6 md:h-6 text-white" />
              </div>
              <h1 className="text-base sm:text-lg md:text-2xl font-bold text-white whitespace-nowrap">心願星河</h1>
            </Link>

            {/* 導航區域 */}
            <nav className="flex items-center gap-1 sm:gap-2 md:gap-4 flex-shrink-0">
              {/* 音樂控制 */}
              <div className="hidden sm:block">
                <HeaderMusicControl />
              </div>
              <div className="sm:hidden">
                <HeaderMusicControl mobileSimplified />
              </div>

              {/* 桌面版完整導航 */}
              <div className="hidden md:flex items-center gap-4">
                <Link href="/wishes">
                  <Button
                    variant="outline"
                    size="sm"
                    className="border-blue-400 bg-slate-800/50 text-blue-100 hover:bg-slate-700/50 px-4"
                  >
                    聆聽心聲
                  </Button>
                </Link>
                <Link href="/submit">
                  <Button
                    size="sm"
                    className="bg-gradient-to-r from-cyan-500 to-blue-600 hover:from-cyan-600 hover:to-blue-700 text-white shadow-lg shadow-cyan-500/25 px-4"
                  >
                    分享困擾
                  </Button>
                </Link>
              </div>

              {/* 平板版導航 */}
              <div className="hidden sm:flex md:hidden items-center gap-1">
                <Link href="/">
                  <Button
                    variant="ghost"
                    size="sm"
                    className="text-blue-200 hover:text-white hover:bg-blue-800/50 px-2"
                  >
                    <ArrowLeft className="w-4 h-4" />
                  </Button>
                </Link>
                <Link href="/wishes">
                  <Button
                    variant="outline"
                    size="sm"
                    className="border-blue-400 bg-slate-800/50 text-blue-100 hover:bg-slate-700/50 px-2 text-xs"
                  >
                    心聲
                  </Button>
                </Link>
                <Link href="/submit">
                  <Button
                    size="sm"
                    className="bg-gradient-to-r from-cyan-500 to-blue-600 hover:from-cyan-600 hover:to-blue-700 text-white shadow-lg shadow-cyan-500/25 px-3"
                  >
                    分享
                  </Button>
                </Link>
              </div>

              {/* 手機版導航 - 移除首頁按鈕，避免與 logo 功能重疊 */}
              <div className="flex sm:hidden items-center gap-1">
                <Link href="/wishes">
                  <Button
                    variant="outline"
                    size="sm"
                    className="border-blue-400 bg-slate-800/50 text-blue-100 hover:bg-slate-700/50 px-2 text-xs"
                  >
                    心聲
                  </Button>
                </Link>
                <Link href="/submit">
                  <Button
                    size="sm"
                    className="bg-gradient-to-r from-cyan-500 to-blue-600 hover:from-cyan-600 hover:to-blue-700 text-white shadow-lg shadow-cyan-500/25 px-3 text-xs"
                  >
                    分享
                  </Button>
                </Link>
              </div>
            </nav>
          </div>
        </div>
      </header>

      {/* Main Content */}
      <main className="py-8 md:py-12 px-4">
        <div className="container mx-auto max-w-7xl">
          {/* 頁面標題 */}
          <div className="text-center mb-8 md:mb-12">
            <div className="flex items-center justify-center gap-3 mb-4">
              <div className="w-12 h-12 bg-gradient-to-br from-purple-400 to-indigo-500 rounded-full flex items-center justify-center shadow-lg shadow-purple-500/25">
                <BarChart3 className="w-6 h-6 md:w-8 md:h-8 text-white" />
              </div>
              <h2 className="text-3xl md:text-4xl font-bold text-white">問題洞察分析</h2>
              <Badge className="bg-gradient-to-r from-pink-500/20 to-purple-500/20 text-pink-200 border border-pink-400/30 px-3 py-1">
                完整數據分析
              </Badge>
            </div>
            <p className="text-blue-200 text-lg">深入分析職場困擾的分布和趨勢</p>
            <p className="text-blue-300 text-sm mt-2">包含所有提交的案例數據，協助管理者了解真實狀況</p>
          </div>

          {/* 隱私說明卡片 */}
          <Card className="bg-gradient-to-r from-indigo-800/30 to-purple-800/30 backdrop-blur-sm border border-indigo-600/50 mb-8 md:mb-12">
            <CardHeader>
              <CardTitle className="text-lg sm:text-xl md:text-2xl text-white flex items-center gap-3">
                <div className="w-8 h-8 bg-gradient-to-br from-indigo-400 to-purple-500 rounded-full flex items-center justify-center">
                  <Shield className="w-4 h-4 text-white" />
                </div>
                數據隱私說明
              </CardTitle>
              <CardDescription className="text-indigo-200 text-sm sm:text-base">
                本分析包含所有提交的案例，包括選擇保持私密的困擾
              </CardDescription>
            </CardHeader>
            <CardContent>
              <div className="grid sm:grid-cols-2 gap-4 text-sm">
                <div className="space-y-2">
                  <h4 className="font-semibold text-indigo-200 flex items-center gap-2">
                    <Eye className="w-4 h-4" />
                    公開案例 ({analytics.publicWishes} 個)
                  </h4>
                  <p className="text-indigo-100">這些案例會顯示在「聆聽心聲」頁面，供其他人查看和產生共鳴</p>
                </div>
                <div className="space-y-2">
                  <h4 className="font-semibold text-indigo-200 flex items-center gap-2">
                    <EyeOff className="w-4 h-4" />
                    私密案例 ({analytics.privateWishes} 個)
                  </h4>
                  <p className="text-indigo-100">這些案例保持匿名且私密，僅用於統計分析，幫助了解整體趨勢</p>
                </div>
              </div>
              <div className="mt-4 p-3 bg-slate-800/50 rounded-lg border border-slate-600/30">
                <p className="text-xs md:text-sm text-slate-300 leading-relaxed">
                  <strong className="text-blue-200">給管理者的說明：</strong>
                  此分析包含完整的問題數據，能幫助您了解團隊面臨的真實挑戰。私密案例雖然不會公開顯示，
                  但其數據對於制定改善策略同樣重要。所有個人身份資訊都已匿名化處理。
                </p>
              </div>
            </CardContent>
          </Card>

          {/* 統計概覽 */}
          <div className="grid grid-cols-2 md:grid-cols-4 gap-4 md:gap-6 mb-8 md:mb-12">
            <Card className="bg-slate-800/50 backdrop-blur-sm border border-slate-600/50">
              <CardContent className="p-4 md:p-6 text-center">
                <div className="w-10 h-10 md:w-12 md:h-12 bg-gradient-to-br from-cyan-400 to-blue-500 rounded-full flex items-center justify-center mx-auto mb-2 md:mb-3">
                  <Users className="w-5 h-5 md:w-6 md:h-6 text-white" />
                </div>
                <div className="text-2xl md:text-3xl font-bold text-white mb-1">{analytics.totalWishes}</div>
                <div className="text-xs md:text-sm text-blue-200">總案例數</div>
                <div className="text-xs text-slate-400 mt-1">
                  公開 {analytics.publicWishes} + 私密 {analytics.privateWishes}
                </div>
              </CardContent>
            </Card>

            <Card className="bg-slate-800/50 backdrop-blur-sm border border-slate-600/50">
              <CardContent className="p-4 md:p-6 text-center">
                <div className="w-10 h-10 md:w-12 md:h-12 bg-gradient-to-br from-green-400 to-emerald-500 rounded-full flex items-center justify-center mx-auto mb-2 md:mb-3">
                  <TrendingUp className="w-5 h-5 md:w-6 md:h-6 text-white" />
                </div>
                <div className="text-2xl md:text-3xl font-bold text-white mb-1">{analytics.recentTrends.thisWeek}</div>
                <div className="text-xs md:text-sm text-blue-200">本週新增</div>
              </CardContent>
            </Card>

            <Card className="bg-slate-800/50 backdrop-blur-sm border border-slate-600/50">
              <CardContent className="p-4 md:p-6 text-center">
                <div className="w-10 h-10 md:w-12 md:h-12 bg-gradient-to-br from-purple-400 to-indigo-500 rounded-full flex items-center justify-center mx-auto mb-2 md:mb-3">
                  <Target className="w-5 h-5 md:w-6 md:h-6 text-white" />
                </div>
                <div className="text-2xl md:text-3xl font-bold text-white mb-1">
                  {analytics.categories.filter((c) => c.count > 0).length}
                </div>
                <div className="text-xs md:text-sm text-blue-200">問題領域</div>
              </CardContent>
            </Card>

            <Card className="bg-slate-800/50 backdrop-blur-sm border border-slate-600/50">
              <CardContent className="p-4 md:p-6 text-center">
                <div
                  className="w-10 h-10 md:w-12 md:h-12 rounded-full flex items-center justify-center mx-auto mb-2 md:mb-3"
                  style={{
                    background: `linear-gradient(135deg, ${analytics.recentTrends.growthColor}80, ${analytics.recentTrends.growthColor}60)`,
                  }}
                >
                  <GrowthIcon className="w-5 h-5 md:w-6 md:h-6 text-white" />
                </div>
                <div className="text-2xl md:text-3xl font-bold text-white mb-1">
                  {analytics.recentTrends.growth > 0 ? "+" : ""}
                  {analytics.recentTrends.growth}%
                </div>
                <div className="text-xs md:text-sm" style={{ color: analytics.recentTrends.growthColor }}>
                  {analytics.recentTrends.growthLabel}
                </div>
                {/* 詳細說明 */}
                <div className="text-xs text-slate-400 mt-1">上週: {analytics.recentTrends.lastWeek} 個</div>
              </CardContent>
            </Card>
          </div>

          {/* 分類指南 */}
          <Card className="bg-gradient-to-r from-indigo-800/30 to-purple-800/30 backdrop-blur-sm border border-indigo-600/50 mb-8 md:mb-12">
            <CardHeader>
              <div className="flex flex-col sm:flex-row sm:items-center sm:justify-between gap-3">
                <div className="flex items-center gap-3">
                  <div className="w-8 h-8 bg-gradient-to-br from-indigo-400 to-purple-500 rounded-full flex items-center justify-center flex-shrink-0">
                    <BookOpen className="w-4 h-4 text-white" />
                  </div>
                  <div className="min-w-0 flex-1">
                    <CardTitle className="text-lg sm:text-xl md:text-2xl text-white">問題分類說明</CardTitle>
                    <CardDescription className="text-indigo-200 text-sm sm:text-base">
                      了解我們如何分類和分析各種職場困擾
                    </CardDescription>
                  </div>
                </div>
                <Button
                  variant="ghost"
                  size="sm"
                  onClick={() => setShowCategoryGuide(!showCategoryGuide)}
                  className="text-indigo-200 hover:text-white hover:bg-indigo-800/50 self-start sm:self-auto flex-shrink-0"
                >
                  {showCategoryGuide ? (
                    <>
                      <ChevronUp className="w-4 h-4 mr-1" />
                      收起
                    </>
                  ) : (
                    <>
                      <ChevronDown className="w-4 h-4 mr-1" />
                      展開
                    </>
                  )}
                </Button>
              </div>
            </CardHeader>

            {showCategoryGuide && (
              <CardContent>
                <div className="grid md:grid-cols-2 gap-4">
                  {categories.map((category, index) => (
                    <div
                      key={category.name}
                      className="p-4 rounded-lg bg-slate-700/30 border border-slate-600/30 hover:bg-slate-600/40 transition-all duration-200"
                    >
                      <div className="flex items-start gap-3 mb-2">
                        <div className="text-2xl">{category.icon}</div>
                        <div className="flex-1">
                          <div className="flex items-center gap-2 mb-1">
                            <h4 className="font-semibold text-white">{category.name}</h4>
                            <div className="w-3 h-3 rounded-full" style={{ backgroundColor: category.color }}></div>
                          </div>
                          <p className="text-sm text-slate-300 leading-relaxed">{category.description}</p>
                        </div>
                      </div>

                      {/* 關鍵字示例 */}
                      <div className="mt-3 pt-3 border-t border-slate-600/30">
                        <div className="text-xs text-slate-400 mb-2">常見關鍵字：</div>
                        <div className="flex flex-wrap gap-1">
                          {category.keywords.slice(0, 6).map((keyword, idx) => (
                            <Badge
                              key={idx}
                              variant="secondary"
                              className="text-xs px-2 py-0.5 bg-slate-600/50 text-slate-300 border-slate-500/50"
                            >
                              {keyword}
                            </Badge>
                          ))}
                          {category.keywords.length > 6 && (
                            <Badge
                              variant="secondary"
                              className="text-xs px-2 py-0.5 bg-slate-600/30 text-slate-400 border-slate-500/30"
                            >
                              +{category.keywords.length - 6}
                            </Badge>
                          )}
                        </div>
                      </div>
                    </div>
                  ))}
                </div>
              </CardContent>
            )}
          </Card>

          {/* 手機版：垂直佈局，桌面版：並排佈局 */}
          <div className="space-y-8 lg:space-y-0 lg:grid lg:grid-cols-2 lg:gap-8 md:gap-12">
            {/* 雷達圖 - 手機版給予更多高度 */}
            <Card className="bg-slate-800/50 backdrop-blur-sm border border-slate-600/50">
              <CardHeader>
                <CardTitle className="text-xl md:text-2xl text-white flex items-center gap-3">
                  <div className="w-8 h-8 bg-gradient-to-br from-purple-400 to-indigo-500 rounded-full flex items-center justify-center">
                    <BarChart3 className="w-4 h-4 text-white" />
                  </div>
                  問題分布圖譜
                </CardTitle>
                <CardDescription className="text-blue-200">各類職場困擾的完整案例分布（包含私密數據）</CardDescription>
              </CardHeader>
              <CardContent>
                {/* 手機版使用更大的高度，桌面版保持原有高度 */}
                <div className="h-80 sm:h-96 lg:h-80 xl:h-96">
                  <RadarChart data={analytics.categories} />
                </div>
              </CardContent>
            </Card>

            {/* 分類詳細統計 */}
            <Card className="bg-slate-800/50 backdrop-blur-sm border border-slate-600/50">
              <CardHeader>
                <CardTitle className="text-xl md:text-2xl text-white flex items-center gap-3">
                  <div className="w-8 h-8 bg-gradient-to-br from-cyan-400 to-blue-500 rounded-full flex items-center justify-center">
                    <Target className="w-4 h-4 text-white" />
                  </div>
                  完整案例統計
                  <Badge className="bg-gradient-to-r from-pink-500/20 to-purple-500/20 text-pink-200 border border-pink-400/30 text-xs px-2 py-1">
                    含私密數據
                  </Badge>
                </CardTitle>
                <CardDescription className="text-blue-200">
                  每個領域的所有案例數量（包含公開和私密案例）
                  {analytics.categories.filter((cat) => cat.count > 0).length > 0 && (
                    <span className="block text-xs text-slate-400 mt-1">
                      共 {analytics.categories.filter((cat) => cat.count > 0).length} 個活躍分類
                      {analytics.categories.filter((cat) => cat.count > 0).length > 4 && "，可滾動查看全部"}
                    </span>
                  )}
                </CardDescription>
              </CardHeader>
              <CardContent className="space-y-4">
                {/* 設定固定高度並添加滾動 */}
                <div className="max-h-80 overflow-y-auto pr-2 space-y-4 scrollbar-thin scrollbar-thumb-slate-600 scrollbar-track-slate-800">
                  {analytics.categories
                    .filter((cat) => cat.count > 0)
                    .sort((a, b) => b.count - a.count)
                    .map((category, index) => (
                      <div
                        key={category.name}
                        className="flex items-center justify-between p-4 rounded-lg bg-slate-700/30 border border-slate-600/30 hover:bg-slate-600/40 transition-all duration-200"
                      >
                        <div className="flex items-center gap-3">
                          <div className="text-xl">
                            {categories.find((cat) => cat.name === category.name)?.icon || "❓"}
                          </div>
                          <div>
                            <div className="font-semibold text-white flex items-center gap-2">
                              {category.name}
                              <div className="w-3 h-3 rounded-full" style={{ backgroundColor: category.color }}></div>
                              {/* 添加排名標示 */}
                              {index < 3 && (
                                <span className="text-xs bg-gradient-to-r from-cyan-500/20 to-blue-500/20 text-cyan-200 px-2 py-0.5 rounded-full border border-cyan-500/30">
                                  TOP {index + 1}
                                </span>
                              )}
                            </div>
                            <div className="text-sm text-slate-300">{category.count} 個案例</div>
                            {category.description && (
                              <div className="text-xs text-slate-400 mt-1 max-w-xs">{category.description}</div>
                            )}
                          </div>
                        </div>
                        <Badge variant="secondary" className="bg-slate-600/50 text-slate-200">
                          {category.percentage}%
                        </Badge>
                      </div>
                    ))}
                </div>

                {/* 滾動提示 */}
                {analytics.categories.filter((cat) => cat.count > 0).length > 4 && (
                  <div className="text-center pt-2 border-t border-slate-600/30">
                    <div className="text-xs text-slate-400 flex items-center justify-center gap-2">
                      <div className="w-1 h-1 bg-slate-400 rounded-full animate-bounce"></div>
                      <span>向下滾動查看更多分類</span>
                      <div
                        className="w-1 h-1 bg-slate-400 rounded-full animate-bounce"
                        style={{ animationDelay: "0.5s" }}
                      ></div>
                    </div>
                  </div>
                )}
              </CardContent>
            </Card>
          </div>

          {/* 多維度分析說明 */}
          <Card className="bg-gradient-to-r from-purple-800/30 to-indigo-800/30 backdrop-blur-sm border border-purple-600/50 mt-8 md:mt-12">
            <CardHeader>
              <CardTitle className="text-xl md:text-2xl text-white flex items-center gap-3">
                <div className="w-8 h-8 bg-gradient-to-br from-purple-400 to-pink-500 rounded-full flex items-center justify-center">
                  <Sparkles className="w-4 h-4 text-white" />
                </div>
                完整數據分析優勢
              </CardTitle>
              <CardDescription className="text-purple-200">包含私密案例的全面分析，提供更準確的洞察</CardDescription>
            </CardHeader>
            <CardContent>
              <div className="grid sm:grid-cols-2 gap-4 text-sm">
                <div className="space-y-2">
                  <h4 className="font-semibold text-purple-200">🔍 真實全貌</h4>
                  <p className="text-purple-100">包含所有案例數據，不受公開意願影響，呈現最真實的問題狀況</p>
                </div>
                <div className="space-y-2">
                  <h4 className="font-semibold text-purple-200">📊 精準決策</h4>
                  <p className="text-purple-100">基於完整數據制定改善策略，避免因樣本偏差導致的決策失誤</p>
                </div>
                <div className="space-y-2">
                  <h4 className="font-semibold text-purple-200">🎯 隱藏問題</h4>
                  <p className="text-purple-100">發現那些員工不願公開但確實存在的問題，提前預防和解決</p>
                </div>
                <div className="space-y-2">
                  <h4 className="font-semibold text-purple-200">🔒 隱私保護</h4>
                  <p className="text-purple-100">在保護個人隱私的前提下，最大化數據的分析價值</p>
                </div>
              </div>
            </CardContent>
          </Card>

          {/* 熱門關鍵字 */}
          {analytics.topKeywords.length > 0 && (
            <Card className="bg-slate-800/50 backdrop-blur-sm border border-slate-600/50 mt-8 md:mt-12">
              <CardHeader>
                <CardTitle className="text-xl md:text-2xl text-white flex items-center gap-3">
                  <div className="w-8 h-8 bg-gradient-to-br from-green-400 to-emerald-500 rounded-full flex items-center justify-center">
                    <TrendingUp className="w-4 h-4 text-white" />
                  </div>
                  最常見的問題關鍵字
                </CardTitle>
                <CardDescription className="text-blue-200">
                  在所有案例中最常出現的詞彙，反映團隊面臨的核心挑戰
                </CardDescription>
              </CardHeader>
              <CardContent>
                <div className="flex flex-wrap gap-2 sm:gap-3">
                  {analytics.topKeywords.map((keyword, index) => (
                    <Badge
                      key={keyword.word}
                      variant="secondary"
                      className="bg-gradient-to-r from-cyan-500/20 to-blue-500/20 text-cyan-200 border border-cyan-500/30 px-3 py-1.5 text-sm"
                    >
                      {keyword.word} ({keyword.count})
                    </Badge>
                  ))}
                </div>
              </CardContent>
            </Card>
          )}
        </div>
      </main>
    </div>
  )
}