"use client";

import Link from "next/link";
import { motion, type Variants, useReducedMotion } from "framer-motion";
import { serviceHubLinks } from "@/lib/site-content";
import { Section } from "./Section";
import { DrawLine } from "./animations/DrawLine";
import MagneticButton from "./cinematic/MagneticButton";

interface Tier {
  id: string;
  badge: string;
  level: string;
  title: string;
  tagline: string;
  description: string;
  deliverables: string[];
  pricing: string;
  pricingNote: string;
  featured?: boolean;
  ctaLabel: string;
  ctaHref: string;
}

const TIERS: Tier[] = [
  {
    id: "discovery",
    badge: "Entrada / Baixo Risco",
    level: "01",
    title: "Auditoria & Diagnostico Tecnico",
    tagline: "Fotografia clara do problema antes de qualquer comprometimento.",
    description:
      "Analise profunda de arquitetura, performance ou seguranca com entrega de um plano de acao executavel. Ideal para quem precisa de direcao antes de contratar execucao.",
    deliverables: [
      "Relatorio de gargalos e divida tecnica",
      "Mapeamento de riscos e dependencias",
      "Sugestao de stack e cronograma de mitigacao",
      "Plano de acao priorizado",
    ],
    pricing: "Valor Fixo",
    pricingNote: "Contrato unico. Entrega em ate 5 dias uteis.",
    featured: false,
    ctaLabel: "Solicitar diagnostico",
    ctaHref: "#contact",
  },
  {
    id: "cycles",
    badge: "Mais Escolhido",
    level: "02",
    title: "Ciclos de Engenharia",
    tagline: "Capacidade produtiva garantida. Entrega a cada 2 semanas.",
    description:
      "Desenvolvimento continuo com a previsibilidade de orcamento do escopo fechado e a agilidade de sprints. Milestones claros, sem amarras de contrato longo.",
    deliverables: [
      "Features em producao a cada ciclo",
      "Refatoracao iterativa com rastreabilidade",
      "Documentacao tecnica atualizada",
      "Capacidade de pivotar prioridades no inicio de cada sprint",
    ],
    pricing: "Fixo por Ciclo",
    pricingNote: "Assinatura quinzenal ou mensal. Cancele a qualquer ciclo.",
    featured: true,
    ctaLabel: "Iniciar ciclo de engenharia",
    ctaHref: "#contact",
  },
  {
    id: "fractional",
    badge: "Premium / High-Ticket",
    level: "03",
    title: "Fractional Tech Lead",
    tagline: "Lideranca tecnica senior. Sem o custo de um CTO full-time.",
    description:
      "Direcao arquitetural, gestao de risco e sustentacao de operacoes criticas. Para empresas que precisam de decisoes de alto impacto com responsabilidade continua.",
    deliverables: [
      "SLA prioritario Zero-Risk",
      "Code review e lideranca do time interno",
      "Decisoes de infra: Cloud, VPS, CI/CD",
      "Consultoria estrategica recorrente",
    ],
    pricing: "Retainer Mensal",
    pricingNote: "Renovacao mensal. Vagas limitadas.",
    featured: false,
    ctaLabel: "Agendar conversa estrategica",
    ctaHref: "#contact",
  },
];

function TierCard({ tier }: Readonly<{ tier: Tier }>) {
  const shouldReduceMotion = useReducedMotion();

  return (
    <motion.article
      className={`ds-card relative flex h-full min-w-0 flex-col overflow-hidden outline-none max-md:w-full max-md:max-w-none max-md:px-sp-5 max-md:py-sp-5 ${
        tier.featured ? "border-[var(--slash)] shadow-sm" : ""
      }`}
      style={{
        borderWidth: tier.featured ? "2px" : "1px",
      }}
      whileHover={
        shouldReduceMotion
          ? undefined
          : {
              y: -4,
              boxShadow: "0 24px 50px rgba(0, 0, 0, 0.08)",
            }
      }
      whileTap={shouldReduceMotion ? undefined : { scale: 0.99 }}
      transition={{ type: "spring", stiffness: 180, damping: 18 }}
    >
      <div className="flex min-w-0 items-start justify-between gap-sp-4">
        <span className="ds-kicker max-md:text-[10px] max-md:leading-[1.6]">
          {tier.badge}
        </span>
        <span className="text-[11px] tracking-[0.08em] text-[var(--meta)]">
          {tier.level}
        </span>
      </div>

      <DrawLine delay={0.04} />

      <div className="mt-sp-4 min-w-0">
        <h3 className="ds-card-title !mt-0 text-balance !text-[clamp(22px,5vw,28px)] !leading-[1.02] !tracking-[-0.035em] [overflow-wrap:break-word] [word-break:normal]">
          {tier.title}
        </h3>
        <p className="mt-sp-2 text-[12px] leading-[1.7] text-[var(--meta)] md:text-[11px]">
          {tier.tagline}
        </p>
      </div>

      <p className="ds-copy !mt-sp-4 !text-[13px] !leading-[1.75] [overflow-wrap:break-word] [word-break:normal] md:!text-[12px]">
        {tier.description}
      </p>

      <ul className="ds-list !mt-sp-5 !pl-[1.15rem] !text-[13px] !leading-[1.75] [overflow-wrap:break-word] [word-break:normal] md:!text-[12px]">
        {tier.deliverables.map((deliverable) => (
          <li key={deliverable} className="pl-sp-1">
            {deliverable}
          </li>
        ))}
      </ul>

      <div className="mt-sp-6 space-y-sp-2 border-t border-[var(--border)] pt-sp-5">
        <div className="font-display text-[clamp(17px,4.6vw,18px)] font-extrabold leading-none tracking-tight">
          {tier.pricing}
        </div>
        <div className="text-[12px] leading-[1.7] text-[var(--meta)]">
          {tier.pricingNote}
        </div>
      </div>

      <MagneticButton
        as="a"
        href={tier.ctaHref}
        className={`ds-link mt-sp-6 min-h-[50px] w-full justify-center px-sp-4 py-sp-3 text-center text-[11px] leading-none ${
          tier.featured ? "ds-link-accent" : "ds-link-muted"
        }`}
        strength={0.25}
      >
        {tier.ctaLabel}
      </MagneticButton>
    </motion.article>
  );
}

export function WorkModalities() {
  const shouldReduceMotion = useReducedMotion();

  const containerVariants: Variants = {
    hidden: {},
    visible: {
      transition: {
        delayChildren: 0.08,
        staggerChildren: 0.08,
      },
    },
  };

  const itemVariants: Variants = {
    hidden: shouldReduceMotion
      ? { opacity: 0 }
      : { opacity: 0, y: 20, clipPath: "inset(100% 0 0 0)" },
    visible: {
      opacity: 1,
      y: 0,
      clipPath: "inset(0% 0 0 0)",
      transition: shouldReduceMotion
        ? { duration: 0.25 }
        : { duration: 0.75, ease: [0.16, 1, 0.3, 1] },
    },
  };

  return (
    <Section
      id="modalities"
      eyebrow="Working models"
      title="Servicos de engenharia de software e consultoria tecnica."
      description="Formatos de contratacao para arquitetura de software, integracoes criticas, produtos conectados e evolucao de sistemas em producao."
      disableChildrenAnimation
    >
      <div className="mb-sp-8 ds-card bg-[rgba(10,10,10,0.02)]">
        <div className="flex flex-col gap-sp-4 lg:flex-row lg:items-end lg:justify-between">
          <div className="max-w-[760px]">
            <div className="ds-kicker">Paginas de servico</div>
            <h3 className="ds-card-title !mt-sp-3">Especialidades organizadas por intencao de busca</h3>
            <p className="ds-copy !mt-sp-3 max-w-[62ch]">
              Se voce chegou buscando uma stack, um tipo de consultoria ou um contexto tecnico especifico,
              aqui esta o caminho mais direto para a pagina certa.
            </p>
          </div>
          <MagneticButton as="a" href="/servicos" className="ds-link ds-link-accent" strength={0.2}>
            Ver hub de servicos
          </MagneticButton>
        </div>

        <div className="mt-sp-6 grid gap-sp-3 md:grid-cols-2 xl:grid-cols-3">
          {serviceHubLinks.map((service) => (
            <Link
              key={service.href}
              href={service.href}
              className="rounded-[8px] border border-[var(--border)] bg-white/70 px-sp-4 py-sp-4 transition-colors duration-200 hover:border-[var(--slash)] hover:bg-white"
            >
              <div className="text-[12px] font-semibold tracking-[0.02em] text-[var(--ink)]">
                {service.label}
              </div>
              <div className="mt-sp-2 text-[12px] leading-6 text-[var(--meta)]">
                {service.description}
              </div>
            </Link>
          ))}
        </div>
      </div>

      <motion.div
        className="grid grid-cols-1 gap-sp-4 md:grid-cols-2 md:gap-sp-5 lg:grid-cols-3 lg:gap-sp-6"
        initial="hidden"
        whileInView="visible"
        viewport={{ once: true, amount: 0.2 }}
        variants={containerVariants}
      >
        {TIERS.map((tier) => (
          <motion.div key={tier.id} variants={itemVariants} className="min-w-0">
            <TierCard tier={tier} />
          </motion.div>
        ))}
      </motion.div>
    </Section>
  );
}