feat(i18n): routing and localization infrastructure (phase 1)
Implement Phase 1 of i18n spec: - Configure next-intl with 6 locales (pt, en, es, fr, de, zh-CN) and pathnames - Move routes to app/[locale] structure with localized layouts and metadata - Add middleware for root language negotiation (307), legacy redirects (308), and 404 for non-pt book - Implement language selector dropdown in header with cookie persistence - Add system typography rules for zh-CN and word-break/hyphenation for de/fr Co-Authored-By: Antigravity <noreply@google.com>
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"use client";
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import { useEffect, useRef, useState } from "react";
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import { usePathname } from "next/navigation";
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import { ChevronDown, Globe } from "lucide-react";
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export const LOCALES = [
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{ code: "pt", label: "Português", short: "PT", lang: "pt-BR" },
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{ code: "en", label: "English", short: "EN", lang: "en" },
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{ code: "es", label: "Español", short: "ES", lang: "es-419" },
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{ code: "fr", label: "Français", short: "FR", lang: "fr" },
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{ code: "de", label: "Deutsch", short: "DE", lang: "de" },
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{ code: "zh-CN", label: "简体中文", short: "中", lang: "zh-CN" },
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];
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const CANONICAL_ROUTES = [
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{
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id: "series_item",
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match: /^\/(?:pt|en|es|fr|de|zh-CN)\/(?:series|serien)\/([^/]+)/,
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getSlug: (loc, key) => (loc === "de" ? `/serien/${key}` : `/series/${key}`),
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},
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{
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id: "frameworks_item",
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match: /^\/(?:pt|en|es|fr|de|zh-CN)\/frameworks\/([^/]+)/,
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getSlug: (loc, key) => `/frameworks/${key}`,
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},
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{
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id: "series",
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match: /^\/(?:pt|en|es|fr|de|zh-CN)\/(?:series|serien)(?:\/|$)/,
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getSlug: (loc) => (loc === "de" ? "/serien" : "/series"),
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},
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{
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id: "catalogo",
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match: /^\/(?:pt|en|es|fr|de|zh-CN)\/(?:catalogo|catalog|catalogue|katalog)(?:\/|$)/,
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getSlug: (loc) => {
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if (loc === "de") return "/katalog";
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if (loc === "fr") return "/catalogue";
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if (loc === "en" || loc === "zh-CN") return "/catalog";
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return "/catalogo";
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},
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},
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{
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id: "comparacao",
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match: /^\/(?:pt|en|es|fr|de|zh-CN)\/(?:comparacao|compare|comparacion|comparaison|vergleich)(?:\/|$)/,
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getSlug: (loc) => {
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if (loc === "en" || loc === "zh-CN") return "/compare";
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if (loc === "es") return "/comparacion";
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if (loc === "fr") return "/comparaison";
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if (loc === "de") return "/vergleich";
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return "/comparacao";
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},
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},
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{
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id: "componentes",
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match: /^\/(?:pt|en|es|fr|de|zh-CN)\/(?:componentes|components|composants|komponenten)(?:\/|$)/,
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getSlug: (loc) => {
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if (loc === "en" || loc === "zh-CN") return "/components";
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if (loc === "fr") return "/composants";
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if (loc === "de") return "/komponenten";
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return "/componentes";
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},
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},
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{
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id: "diagnostico",
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match: /^\/(?:pt|en|es|fr|de|zh-CN)\/(?:diagnostico|diagnostics|diagnostic|diagnose)(?:\/|$)/,
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getSlug: (loc) => {
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if (loc === "en" || loc === "zh-CN") return "/diagnostics";
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if (loc === "fr") return "/diagnostic";
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if (loc === "de") return "/diagnose";
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return "/diagnostico";
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},
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},
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{
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id: "frameworks",
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match: /^\/(?:pt|en|es|fr|de|zh-CN)\/frameworks(?:\/|$)/,
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getSlug: () => "/frameworks",
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},
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{
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id: "glossario",
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match: /^\/(?:pt|en|es|fr|de|zh-CN)\/(?:glossario|glossary|glosario|glossaire|glossar)(?:\/|$)/,
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getSlug: (loc) => {
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if (loc === "en" || loc === "zh-CN") return "/glossary";
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if (loc === "es") return "/glosario";
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if (loc === "fr") return "/glossaire";
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if (loc === "de") return "/glossar";
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return "/glossario";
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},
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},
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{
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id: "seletor",
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match: /^\/(?:pt|en|es|fr|de|zh-CN)\/(?:seletor|selector|selecteur|auswahl)(?:\/|$)/,
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getSlug: (loc) => {
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if (loc === "en" || loc === "es" || loc === "zh-CN") return "/selector";
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if (loc === "fr") return "/selecteur";
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if (loc === "de") return "/auswahl";
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return "/seletor";
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},
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},
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{
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id: "sobre",
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match: /^\/(?:pt|en|es|fr|de|zh-CN)\/(?:sobre|about|acerca|a-propos|ueber-uns)(?:\/|$)/,
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getSlug: (loc) => {
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if (loc === "en" || loc === "zh-CN") return "/about";
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if (loc === "es") return "/acerca";
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if (loc === "fr") return "/a-propos";
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if (loc === "de") return "/ueber-uns";
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return "/sobre";
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},
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},
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{
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id: "livro",
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match: /^\/(?:pt|en|es|fr|de|zh-CN)\/livro(?:\/|$)/,
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getSlug: (loc) => (loc === "pt" ? "/livro" : ""),
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},
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];
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export function getLocalizedHref(pathname, targetLocale) {
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if (!pathname || pathname === "/" || pathname === `/${targetLocale}` || pathname === `/${targetLocale}/`) {
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return `/${targetLocale}/`;
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}
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for (const route of CANONICAL_ROUTES) {
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const m = pathname.match(route.match);
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if (m) {
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const slug = route.getSlug(targetLocale, m[1]);
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return slug ? `/${targetLocale}${slug}` : `/${targetLocale}/`;
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}
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}
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return `/${targetLocale}/`;
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}
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export default function LanguageSelector() {
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const pathname = usePathname() || "";
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const [open, setOpen] = useState(false);
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const [hash, setHash] = useState("");
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const containerRef = useRef(null);
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// Detecta locale da URL atual
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const currentLocaleCode =
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LOCALES.find((l) => pathname === `/${l.code}` || pathname.startsWith(`/${l.code}/`))?.code || "pt";
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const currentLocale = LOCALES.find((l) => l.code === currentLocaleCode) || LOCALES[0];
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useEffect(() => {
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if (typeof window !== "undefined") {
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setHash(window.location.hash || "");
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}
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}, [pathname]);
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useEffect(() => {
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function onPointerDown(e) {
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if (containerRef.current && !containerRef.current.contains(e.target)) {
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setOpen(false);
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}
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}
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function onKeyDown(e) {
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if (e.key === "Escape") {
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setOpen(false);
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}
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}
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document.addEventListener("mousedown", onPointerDown);
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document.addEventListener("keydown", onKeyDown);
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return () => {
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document.removeEventListener("mousedown", onPointerDown);
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document.removeEventListener("keydown", onKeyDown);
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};
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}, []);
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const handleSelect = (code) => {
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if (typeof document !== "undefined") {
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document.cookie = `NEXT_LOCALE=${code}; path=/; max-age=31536000; SameSite=Lax`;
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}
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setOpen(false);
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};
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return (
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<div ref={containerRef} className="relative">
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<button
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type="button"
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onClick={() => setOpen(!open)}
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className="flex h-11 min-w-[44px] items-center gap-1.5 rounded-full border border-line bg-surface px-3 text-sm font-semibold text-ink transition-colors hover:bg-surface-2 focus-visible:outline-2 focus-visible:outline-accent"
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aria-haspopup="listbox"
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aria-expanded={open}
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aria-label={`Idioma atual: ${currentLocale.label}. Clique para trocar de idioma.`}
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title={`Idioma: ${currentLocale.label}`}
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>
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<Globe className="h-4 w-4 text-muted" aria-hidden="true" />
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<span className="font-semibold">{currentLocale.short}</span>
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<ChevronDown
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className={`h-3 w-3 text-muted transition-transform duration-200 ${open ? "rotate-180" : ""}`}
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aria-hidden="true"
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/>
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</button>
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{open && (
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<div
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role="listbox"
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aria-label="Idiomas disponíveis"
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className="absolute right-0 top-full mt-2 w-48 rounded-2xl border border-line bg-surface p-1.5 shadow-[0_24px_60px_-20px_rgba(15,23,42,0.35)] dark:shadow-[0_24px_60px_-20px_rgba(0,0,0,0.8)] z-50"
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>
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{LOCALES.map((loc) => {
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const isActive = loc.code === currentLocaleCode;
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const href = `${getLocalizedHref(pathname, loc.code)}${hash}`;
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return (
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<a
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key={loc.code}
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href={href}
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lang={loc.lang}
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hrefLang={loc.lang}
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role="option"
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aria-selected={isActive}
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aria-current={isActive ? "true" : undefined}
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onClick={() => handleSelect(loc.code)}
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className={`flex min-h-[44px] items-center justify-between rounded-xl px-3 py-2 text-sm transition-colors ${
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isActive
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? "bg-accent-soft text-accent font-semibold"
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: "text-ink-soft hover:bg-surface-2 hover:text-ink"
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}`}
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>
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<span>{loc.label}</span>
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<span className={`text-xs ${isActive ? "text-accent" : "text-muted"}`}>
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{loc.short}
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</span>
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</a>
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);
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})}
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</div>
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)}
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</div>
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);
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}
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