"use client";

import React from "react";
import { motion } from "framer-motion";
import { LucideIcon, Brain, Zap, Target, Rocket, Users, Lightbulb, Code, Shield, Terminal, Cpu } from "lucide-react";
import Squares from "@/components/Squares";

// --- Types & Interfaces (Tipagem Forte para Previsibilidade) ---
interface StoryStep {
  icon: LucideIcon;
  title: string;
  content: string;
  gradient: string;
  accent: string;
  id: string;
}

interface CoreValue {
  icon: LucideIcon;
  title: string;
  description: string;
}

// --- Data (Desacoplado para facilitar manutenção/CMS) ---
const STORY_DATA: StoryStep[] = [
  {
    id: "KERNEL_INIT",
    icon: Brain,
    title: "Engenharia de Fundamentos",
    content: "Minha mentalidade é pautada pela redução de entropia. Não apenas escrevo código; projeto sistemas onde a escalabilidade é uma propriedade intrínseca da arquitetura, não um ajuste posterior.",
    gradient: "from-blue-600 to-cyan-500",
    accent: "text-blue-400",
  },
  {
    id: "RUNTIME_EXEC",
    icon: Zap,
    title: "Entrega sob Restrições",
    content: "Em 3 anos de atuação profissional, especializei-me em cenários de alta criticidade. Atuei na ponte entre sistemas legados e microserviços, garantindo a resolução do problema.",
    gradient: "from-purple-600 to-pink-600",
    accent: "text-purple-400",
  },
];

const VALUES_DATA: CoreValue[] = [
  {
    icon: Code,
    title: "Pragmatismo Arquitetural",
    description: "Priorizo a manutenibilidade e a resiliência. Código limpo é o meio, sistemas que geram ROI são o fim."
  },
  {
    icon: Brain,
    title: "Fundacionalismo Técnico",
    description: "Domínio profundo de estruturas de dados e protocolos. Tecnologias mudam, fundamentos são perenes."
  },
  {
    icon: Users,
    title: "Propriedade e Ownership",
    description: "Comunicação de baixa latência e responsabilidade radical sobre cada entrega e decisão técnica."
  },
  {
    icon: Shield,
    title: "Security by Design",
    description: "Integridade e conformidade técnica (GDPR/LGPD) tratadas como requisitos funcionais, não opcionais."
  },
];

// --- Micro-componentes (Feynman Technique: Simplicidade e Reuso) ---

const SectionHeader = () => (
  <div className="text-center md:text-left mb-24 relative z-10">
    <motion.div
      initial={{ opacity: 0, y: 20 }}
      whileInView={{ opacity: 1, y: 0 }}
      viewport={{ once: true }}
      className="inline-flex items-center gap-2 px-3 py-1 rounded-full bg-blue-950/30 border border-blue-500/20 text-blue-400 font-mono text-xs tracking-wider mb-6"
    >
      <Terminal className="w-3 h-3" />
      <span>WHOAMI.sys</span>
    </motion.div>
    <motion.h2
      initial={{ opacity: 0, y: 20 }}
      whileInView={{ opacity: 1, y: 0 }}
      viewport={{ once: true }}
      transition={{ delay: 0.1 }}
      className="text-4xl md:text-6xl font-black text-white tracking-tighter"
    >
      Engenharia <br />
      <span className="text-transparent bg-clip-text bg-gradient-to-r from-blue-500 to-cyan-400">Nuclear</span>
    </motion.h2>
    <p className="mt-6 text-lg text-slate-400 max-w-2xl leading-relaxed font-light border-l-2 border-slate-800 pl-6">
      "Transformando complexidade técnica em valor de negócio através da engenharia."
    </p>
  </div>
);

const StoryCard = ({ step, index }: { step: StoryStep; index: number }) => {
  const isEven = index % 2 === 0;

  return (
    <motion.div
      initial={{ opacity: 0, x: isEven ? -30 : 30 }}
      whileInView={{ opacity: 1, x: 0 }}
      viewport={{ once: true, margin: "-100px" }}
      className={`flex flex-col ${isEven ? "md:flex-row" : "md:flex-row-reverse"} items-stretch gap-8 mb-20 relative`}
    >
      <div className="flex-1 w-full">
        <div className="group relative h-full p-8 rounded-3xl bg-zinc-900/40 border border-white/5 hover:border-blue-500/30 transition-all duration-500 shadow-xl backdrop-blur-xl overflow-hidden">
          {/* Background Glow */}
          <div className="absolute inset-0 bg-gradient-to-br from-blue-500/5 to-transparent opacity-0 group-hover:opacity-100 transition-opacity duration-500" />

          <div className="relative z-10">
            <div className="flex items-center gap-4 mb-6">
              <div className="p-3 rounded-xl bg-blue-500/10 border border-blue-500/20 text-blue-400 group-hover:scale-110 transition-transform duration-300">
                <step.icon className="w-6 h-6" />
              </div>
              <span className="text-xs font-mono text-slate-500 uppercase tracking-widest">
                {step.id}
              </span>
            </div>

            <h3 className="text-2xl font-bold text-white mb-4 group-hover:text-blue-400 transition-colors">{step.title}</h3>
            <p className="text-slate-400 leading-relaxed text-sm">{step.content}</p>
          </div>
        </div>
      </div>

      {/* Connection Line & Node */}
      <div className="hidden md:flex flex-col items-center justify-center w-12 relative">
        <div className="absolute top-0 bottom-0 w-[1px] bg-slate-800 group-hover:bg-blue-500/50 transition-colors" />
        <div className="w-4 h-4 rounded-full bg-slate-900 border-2 border-slate-700 z-10 group-hover:border-blue-500 transition-colors" />
      </div>

      <div className="flex-1 hidden md:block" />
    </motion.div>
  );
};

export default function About() {
  return (
    <section id="about" className="relative py-32">
      {/* Background Gradients */}
      <div className="absolute top-0 left-0 w-full h-full pointer-events-none">
        <div className="absolute top-[-10%] right-[-10%] w-[600px] h-[600px] bg-blue-900/10 rounded-full blur-[120px]" />
        <div className="absolute bottom-[-10%] left-[-10%] w-[600px] h-[600px] bg-purple-900/10 rounded-full blur-[120px]" />
      </div>

      <div className="container max-w-6xl mx-auto px-6 relative z-10">
        <SectionHeader />

        <div className="relative mt-20">
          {/* Center Line for Mobile/Desktop */}
          <div className="absolute left-6 md:left-1/2 top-0 bottom-0 w-[1px] bg-slate-800 md:-translate-x-1/2 hidden md:block" />

          {STORY_DATA.map((step, idx) => (
            <StoryCard key={idx} step={step} index={idx} />
          ))}
        </div>

        {/* Grid de Valores com Pareto 80/20 */}
        <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-4 gap-6 mt-32">
          {VALUES_DATA.map((val, i) => (
            <motion.div
              key={i}
              initial={{ opacity: 0, y: 20 }}
              whileInView={{ opacity: 1, y: 0 }}
              viewport={{ once: true }}
              transition={{ delay: i * 0.1 }}
              className="p-6 rounded-2xl bg-zinc-900/30 border border-white/5 hover:border-blue-500/20 hover:bg-zinc-900/50 transition-all duration-300 group"
            >
              <div className="mb-4 p-2 w-fit rounded-lg bg-slate-800/50 text-slate-400 group-hover:text-blue-400 group-hover:bg-blue-500/10 transition-colors">
                <val.icon className="w-5 h-5" />
              </div>
              <h4 className="text-white font-bold mb-2 text-sm uppercase tracking-wide group-hover:text-blue-200 transition-colors">{val.title}</h4>
              <p className="text-slate-500 text-xs leading-relaxed group-hover:text-slate-400 transition-colors">{val.description}</p>
            </motion.div>
          ))}
        </div>

        {/* SEO Semantic Content - Visible but subtle */}
        <div className="mt-24 pt-8 border-t border-slate-900">
          <div className="flex items-center justify-center gap-2 text-slate-700 text-xs font-mono uppercase tracking-widest mb-4">
            <Cpu className="w-3 h-3" />
            <span>System_Signature</span>
          </div>
          <p className="text-[10px] text-slate-700 text-center max-w-2xl mx-auto leading-relaxed font-mono">
            Evandro Fonseca Junior :: Engenheiro Full-Stack <br />
            Next.js / React / Angular / Node.js / Tauri / PostgreSQL / IoT <br />
            Garuva, Santa Catarina, Brasil :: Lat: -26.0264, Long: -48.8544
          </p>
        </div>
      </div>
    </section>
  );
}