interface HeroProps {
  isAuthenticated: boolean;
  onStartAnalysis: () => void;
}

export function Hero({ isAuthenticated, onStartAnalysis }: HeroProps) {
  return (
    <section className="relative pt-32 pb-20 px-6 overflow-hidden">
      {/* Decorative elements */}
      <div className="absolute top-20 left-10 w-72 h-72 rounded-full bg-gradient-to-br from-[var(--color-accent)]/20 to-transparent blur-3xl animate-float"></div>
      <div className="absolute bottom-0 right-10 w-96 h-96 rounded-full bg-gradient-to-br from-[var(--color-success)]/15 to-transparent blur-3xl animate-float" style={{ animationDelay: '2s' }}></div>
      
      <div className="max-w-5xl mx-auto text-center relative">
        <div className="opacity-0 animate-fade-in-up stagger-1">
          <span className="inline-flex items-center gap-2 px-4 py-2 rounded-full bg-[var(--color-primary)]/10 text-[var(--color-primary)] text-sm font-medium mb-8">
            <svg className="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
              <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M13 10V3L4 14h7v7l9-11h-7z" />
            </svg>
            由 OpenAI ChatKit 提供技術支援
          </span>
        </div>
        
        <h1 className="font-display text-5xl sm:text-6xl lg:text-7xl font-bold leading-tight mb-6 opacity-0 animate-fade-in-up stagger-2">
          <span className="text-[var(--color-text)]">將考試轉化為</span>
          <br />
          <span className="text-gradient">教學洞察</span>
        </h1>
        
        <p className="text-xl text-[var(--color-text-muted)] max-w-2xl mx-auto mb-10 opacity-0 animate-fade-in-up stagger-3">
          上傳您的 Google 表單回應，讓 AI 分析學生表現、生成個人化解釋並建立同儕學習小組——只需幾秒鐘。
        </p>
        
        <div className="flex flex-col sm:flex-row items-center justify-center gap-4 opacity-0 animate-fade-in-up stagger-4">
          {isAuthenticated ? (
            <button onClick={onStartAnalysis} className="btn btn-accent text-lg px-8 py-4">
              <svg className="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4" />
              </svg>
              開始分析
            </button>
          ) : (
            <a href="#connect" className="btn btn-primary text-lg px-8 py-4">
              <svg className="w-5 h-5" viewBox="0 0 24 24" fill="currentColor">
                <path d="M22.56 12.25c0-.78-.07-1.53-.2-2.25H12v4.26h5.92c-.26 1.37-1.04 2.53-2.21 3.31v2.77h3.57c2.08-1.92 3.28-4.74 3.28-8.09z"/>
                <path d="M12 23c2.97 0 5.46-.98 7.28-2.66l-3.57-2.77c-.98.66-2.23 1.06-3.71 1.06-2.86 0-5.29-1.93-6.16-4.53H2.18v2.84C3.99 20.53 7.7 23 12 23z"/>
                <path d="M5.84 14.09c-.22-.66-.35-1.36-.35-2.09s.13-1.43.35-2.09V7.07H2.18C1.43 8.55 1 10.22 1 12s.43 3.45 1.18 4.93l2.85-2.22.81-.62z"/>
                <path d="M12 5.38c1.62 0 3.06.56 4.21 1.64l3.15-3.15C17.45 2.09 14.97 1 12 1 7.7 1 3.99 3.47 2.18 7.07l3.66 2.84c.87-2.6 3.3-4.53 6.16-4.53z"/>
              </svg>
              連接 Google 帳號
            </a>
          )}
          <a href="#features" className="btn btn-outline text-lg px-8 py-4">
            查看使用方式
          </a>
        </div>
        
        {/* Stats */}
        <div className="mt-20 grid grid-cols-3 gap-8 max-w-2xl mx-auto opacity-0 animate-fade-in-up stagger-5">
          {[
            { value: "5分鐘", label: "平均分析時間" },
            { value: "98%", label: "教師滿意度" },
            { value: "40+", label: "支援的題型" },
          ].map((stat, i) => (
            <div key={i} className="text-center">
              <div className="font-display text-3xl font-bold text-[var(--color-primary)]">
                {stat.value}
              </div>
              <div className="text-sm text-[var(--color-text-muted)]">{stat.label}</div>
            </div>
          ))}
        </div>
      </div>
    </section>
  );
}
