FAQ com abas e acordeão

/* ===== faq.css ===================================================================== */

/* FAQ-01 · FAQ com abas e acordeão — reescrito do original do 21st.dev sem React nem Framer Motion.
   Do componente vêm: a aba ativa com o fundo que sobe de baixo (0,5 s, easing "backIn" — recua antes
   de avançar), o painel que entra subindo 20 px, o acordeão que anima a altura e o + que gira 45°.
   A animação é toda do CSS; o JS só cuida de estado e acessibilidade. */
.c-faq {
  --c-faq-fundo: #0a0a0a;
  --c-faq-superficie: #141414;
  --c-faq-linha: rgba(235, 235, 235, .12);
  --c-faq-tinta: #ebebeb;
  --c-faq-tinta-2: #a8a8a8;
  --c-faq-aba-ativa: #e8ad32;
  --c-faq-aba-tinta-ativa: #171717;
  --c-faq-ease: cubic-bezier(.16, 1, .3, 1);

  padding: 20px 16px;
  border: 1px solid var(--c-faq-linha);
  border-radius: 20px;
  background: var(--c-faq-fundo);
  color: var(--c-faq-tinta);
}
.c-faq__abas { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.c-faq__aba {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 6px 12px;
  border: 1px solid var(--c-faq-linha);
  border-radius: 6px;
  background: transparent;
  color: var(--c-faq-tinta-2);
  font: 500 .8rem/1.2 inherit;
  white-space: nowrap;
  cursor: pointer;
  transition: color .5s ease, border-color .5s ease;
}
/* o fundo sobe de baixo com "backIn": recua 56% antes de avançar */
.c-faq__aba-fundo {
  position: absolute;
  z-index: -1;
  inset: 0;
  background: var(--c-faq-aba-ativa);
  transform: translateY(100%);
  transition: transform .5s cubic-bezier(.36, 0, .66, -.56);
}
.c-faq__aba[aria-selected="true"] { color: var(--c-faq-aba-tinta-ativa); border-color: var(--c-faq-aba-ativa); }
.c-faq__aba[aria-selected="true"] .c-faq__aba-fundo { transform: translateY(0); }

.c-faq__painel { display: grid; gap: 10px; animation: c-faq-entra .5s var(--c-faq-ease); }
.c-faq__painel[hidden] { display: none; }
@keyframes c-faq-entra { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: none; } }

.c-faq__item { border: 1px solid var(--c-faq-linha); border-radius: 12px; background: var(--c-faq-fundo); transition: background-color .2s ease; }
.c-faq__item.is-aberto { background: var(--c-faq-superficie); }
.c-faq__pergunta { margin: 0; font: inherit; }
.c-faq__botao {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 16px;
  border: 0;
  background: transparent;
  color: var(--c-faq-tinta-2);
  font: 500 .95rem/1.35 inherit;
  text-align: left;
  cursor: pointer;
}
.c-faq__item.is-aberto .c-faq__botao { color: var(--c-faq-tinta); }
.c-faq__mais { flex: none; width: 20px; height: 20px; transition: transform .2s ease; }
.c-faq__item.is-aberto .c-faq__mais { transform: rotate(45deg); }

/* a altura anima por grid-template-rows 0fr → 1fr: não precisa medir pixel nem saber o conteúdo */
.c-faq__resposta { display: grid; grid-template-rows: 0fr; transition: grid-template-rows .3s ease-in-out; }
.c-faq__item.is-aberto .c-faq__resposta { grid-template-rows: 1fr; }
/* a visibilidade acompanha a altura, para o conteúdo fechado sair da ordem de tabulação */
.c-faq__resposta-dentro { overflow: hidden; padding: 0 16px; visibility: hidden; transition: visibility 0s linear .3s; }
.c-faq__item.is-aberto .c-faq__resposta-dentro { visibility: visible; transition-delay: 0s; }
.c-faq__resposta-dentro p { margin: 0; padding-bottom: 16px; color: var(--c-faq-tinta-2); font-size: .9rem; }

@media (prefers-reduced-motion: reduce) {
  .c-faq__painel { animation: none; }
  .c-faq__aba-fundo, .c-faq__resposta, .c-faq__mais { transition: none; }
}


/* ===== faq.js ====================================================================== */

/* FAQ-01 · abas por assunto (com setas do teclado) e perguntas em acordeão.
   A animação é toda do CSS; aqui só estado e acessibilidade — que é o que o original não tinha. */
(function () {
  'use strict';

  function preparar(faq) {
    var abas = Array.prototype.slice.call(faq.querySelectorAll('[role="tab"]'));

    function selecionar(aba, focar) {
      abas.forEach(function (a) {
        var ativa = a === aba;
        a.setAttribute('aria-selected', ativa ? 'true' : 'false');
        a.tabIndex = ativa ? 0 : -1;
        var painel = document.getElementById(a.getAttribute('aria-controls'));
        if (painel) { painel.hidden = !ativa; }
      });
      if (focar) { aba.focus(); }
    }

    abas.forEach(function (aba, i) {
      aba.addEventListener('click', function () { selecionar(aba, false); });
      aba.addEventListener('keydown', function (e) {
        var alvo = null;
        if (e.key === 'ArrowRight') { alvo = abas[(i + 1) % abas.length]; }
        if (e.key === 'ArrowLeft') { alvo = abas[(i - 1 + abas.length) % abas.length]; }
        if (e.key === 'Home') { alvo = abas[0]; }
        if (e.key === 'End') { alvo = abas[abas.length - 1]; }
        if (alvo) { e.preventDefault(); selecionar(alvo, true); }
      });
    });

    Array.prototype.forEach.call(faq.querySelectorAll('.c-faq__botao'), function (botao) {
      botao.addEventListener('click', function () {
        var aberto = botao.getAttribute('aria-expanded') !== 'true';
        botao.setAttribute('aria-expanded', aberto ? 'true' : 'false');
        botao.closest('.c-faq__item').classList.toggle('is-aberto', aberto);
      });
    });
  }

  function iniciar() { Array.prototype.forEach.call(document.querySelectorAll('.c-faq'), preparar); }

  if (document.readyState === 'loading') { document.addEventListener('DOMContentLoaded', iniciar); } else { iniciar(); }
})();


/* ===== markup.html ================================================================= */

<!-- FAQ-01 · abas + acordeão. O id de cada painel casa com o aria-controls da sua aba.
     O painel inativo nasce com [hidden]; o aria-selected="true" vem no markup para o estado
     anunciado bater com a tela mesmo se o JS não rodar. -->
<section class="c-faq">
  <div class="c-faq__abas" role="tablist" aria-label="Assuntos">
    <button type="button" class="c-faq__aba" role="tab" id="aba-reserva" aria-controls="painel-reserva" aria-selected="true" tabindex="0">
      <span class="c-faq__aba-fundo" aria-hidden="true"></span>Reserva
    </button>
    <button type="button" class="c-faq__aba" role="tab" id="aba-espaco" aria-controls="painel-espaco" aria-selected="false" tabindex="-1">
      <span class="c-faq__aba-fundo" aria-hidden="true"></span>O espaço
    </button>
  </div>

  <div class="c-faq__painel" role="tabpanel" id="painel-reserva" aria-labelledby="aba-reserva">
    <div class="c-faq__item">
      <h3 class="c-faq__pergunta">
        <button type="button" class="c-faq__botao" aria-expanded="false">
          Como funciona o pagamento?
          <svg class="c-faq__mais" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" aria-hidden="true"><path d="M12 5v14M5 12h14"/></svg>
        </button>
      </h3>
      <div class="c-faq__resposta"><div class="c-faq__resposta-dentro"><p>Pix na confirmação da reserva.</p></div></div>
    </div>
    <div class="c-faq__item">
      <h3 class="c-faq__pergunta">
        <button type="button" class="c-faq__botao" aria-expanded="false">
          Posso remarcar?
          <svg class="c-faq__mais" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" aria-hidden="true"><path d="M12 5v14M5 12h14"/></svg>
        </button>
      </h3>
      <div class="c-faq__resposta"><div class="c-faq__resposta-dentro"><p>Até 24 horas antes, sem custo.</p></div></div>
    </div>
  </div>

  <div class="c-faq__painel" role="tabpanel" id="painel-espaco" aria-labelledby="aba-espaco" hidden>
    <div class="c-faq__item">
      <h3 class="c-faq__pergunta">
        <button type="button" class="c-faq__botao" aria-expanded="false">
          Tem estacionamento?
          <svg class="c-faq__mais" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" aria-hidden="true"><path d="M12 5v14M5 12h14"/></svg>
        </button>
      </h3>
      <div class="c-faq__resposta"><div class="c-faq__resposta-dentro"><p>Vaga na rua, sem reserva.</p></div></div>
    </div>
  </div>
</section>

/* ===== 02-faq.jsx ================================================================== */

import React, { useState } from 'react';
import { AnimatePresence, motion } from 'framer-motion';
import { Plus } from 'lucide-react';
import { cn } from '@/lib/utils';

// Main reusable FAQ component
export const FAQ = ({
  title = "FAQs",
  subtitle = "Frequently Asked Questions",
  categories,
  faqData,
  className,
  ...props
}) => {
  const categoryKeys = Object.keys(categories);
  const [selectedCategory, setSelectedCategory] = useState(categoryKeys[0]);

  return (
    <section
      className={cn(
        "relative overflow-hidden bg-background px-4 py-12 text-foreground",
        className
      )}
      {...props}
    >
      <FAQHeader title={title} subtitle={subtitle} />
      <FAQTabs
        categories={categories}
        selected={selectedCategory}
        setSelected={setSelectedCategory}
      />
      <FAQList
        faqData={faqData}
        selected={selectedCategory}
      />
    </section>
  );
};

const FAQHeader = ({ title, subtitle }) => (
  <div className="relative z-10 flex flex-col items-center justify-center">
    <span className="mb-8 bg-gradient-to-r from-primary to-primary/60 bg-clip-text font-medium text-transparent">
      {subtitle}
    </span>
    <h2 className="mb-8 text-5xl font-bold">{title}</h2>
    <span className="absolute -top-[350px] left-[50%] z-0 h-[500px] w-[600px] -translate-x-[50%] rounded-full bg-gradient-to-r from-primary/10 to-primary/5 blur-3xl" />
  </div>
);

const FAQTabs = ({ categories, selected, setSelected }) => (
  <div className="relative z-10 flex flex-wrap items-center justify-center gap-4">
    {Object.entries(categories).map(([key, label]) => (
      <button
        key={key}
        onClick={() => setSelected(key)}
        className={cn(
          "relative overflow-hidden whitespace-nowrap rounded-md border px-3 py-1.5 text-sm font-medium transition-colors duration-500",
          selected === key
            ? "border-primary text-background"
            : "border-border bg-transparent text-muted-foreground hover:text-foreground"
        )}
      >
        <span className="relative z-10">{label}</span>
        <AnimatePresence>
          {selected === key && (
            <motion.span
              initial={{ y: "100%" }}
              animate={{ y: "0%" }}
              exit={{ y: "100%" }}
              transition={{ duration: 0.5, ease: "backIn" }}
              className="absolute inset-0 z-0 bg-gradient-to-r from-primary to-primary/80"
            />
          )}
        </AnimatePresence>
      </button>
    ))}
  </div>
);

const FAQList = ({ faqData, selected }) => (
  <div className="mx-auto mt-12 max-w-3xl">
    <AnimatePresence mode="wait">
      {Object.entries(faqData).map(([category, questions]) => {
        if (selected === category) {
          return (
            <motion.div
              key={category}
              initial={{ opacity: 0, y: 20 }}
              animate={{ opacity: 1, y: 0 }}
              exit={{ opacity: 0, y: 20 }}
              transition={{ duration: 0.5, ease: "backIn" }}
              className="space-y-4"
            >
              {questions.map((faq, index) => (
                <FAQItem key={index} {...faq} />
              ))}
            </motion.div>
          );
        }
        return null;
      })}
    </AnimatePresence>
  </div>
);

const FAQItem = ({ question, answer }) => {
  const [isOpen, setIsOpen] = useState(false);

  return (
    <motion.div
      animate={isOpen ? "open" : "closed"}
      className={cn(
        "rounded-xl border transition-colors",
        isOpen ? "bg-muted/50" : "bg-card"
      )}
    >
      <button
        onClick={() => setIsOpen(!isOpen)}
        className="flex w-full items-center justify-between gap-4 p-4 text-left"
      >
        <span
          className={cn(
            "text-lg font-medium transition-colors",
            isOpen ? "text-foreground" : "text-muted-foreground"
          )}
        >
          {question}
        </span>
        <motion.span
          variants={{
            open: { rotate: "45deg" },
            closed: { rotate: "0deg" },
          }}
          transition={{ duration: 0.2 }}
        >
          <Plus
            className={cn(
              "h-5 w-5 transition-colors",
              isOpen ? "text-foreground" : "text-muted-foreground"
            )}
          />
        </motion.span>
      </button>
      <motion.div
        initial={false}
        animate={{
          height: isOpen ? "auto" : "0px",
          marginBottom: isOpen ? "16px" : "0px"
        }}
        transition={{ duration: 0.3, ease: "easeInOut" }}
        className="overflow-hidden px-4"
      >
        <p className="text-muted-foreground">{answer}</p>
      </motion.div>
    </motion.div>
  );
};