fixed language switching in the frontend

app/Http/Controllers/LocaleController.php

@@ -2,6 +2,7 @@
 
 namespace App\Http\Controllers;
 
+use App\Support\LocaleConfig;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\App;
 use Illuminate\Support\Facades\Session;
@@ -11,23 +12,13 @@ class LocaleController extends Controller
     public function set(Request $request)
     {
         $locale = $request->input('locale');
-        $supportedLocales = array_values(array_unique(array_filter([
+        $supportedLocales = LocaleConfig::normalized();
-            config('app.locale'),
+        $canonical = LocaleConfig::canonicalize($locale);
-            config('app.fallback_locale'),
-            ...array_filter(array_map(
-                static fn ($value) => trim((string) $value),
-                explode(',', (string) env('APP_SUPPORTED_LOCALES', ''))
-            )),
-        ])));
 
-        if (empty($supportedLocales)) {
+        if (in_array($canonical, $supportedLocales, true)) {
-            $supportedLocales = ['de', 'en'];
+            App::setLocale($canonical);
-        }
+            Session::put('locale', $canonical);
-
+            Session::put('preferred_locale', $canonical);
-        if (in_array($locale, $supportedLocales)) {
-            App::setLocale($locale);
-            Session::put('locale', $locale);
-            Session::put('preferred_locale', $locale);
         }
 
         if ($request->expectsJson()) {

app/Http/Controllers/MarketingController.php

@@ -105,7 +105,7 @@ class MarketingController extends Controller
 
     public function contactView(Request $request)
     {
-        $locale = app()->getLocale();
+        $locale = \App\Support\LocaleConfig::canonicalize((string) ($request->route('locale') ?? app()->getLocale()));
         $secondSegment = $request->segment(2);
         $slug = $secondSegment ? '/'.trim((string) $secondSegment, '/') : '/';
 

app/Http/Kernel.php

@@ -36,6 +36,7 @@ class Kernel extends HttpKernel
             \Illuminate\View\Middleware\ShareErrorsFromSession::class,
             \App\Http\Middleware\VerifyCsrfToken::class,
             \Illuminate\Routing\Middleware\SubstituteBindings::class,
+            \App\Http\Middleware\SetLocaleFromRequest::class,
             \App\Http\Middleware\HandleInertiaRequests::class,
             \Illuminate\Http\Middleware\AddLinkHeadersForPreloadedAssets::class,
         ],

app/Http/Middleware/HandleInertiaRequests.php

@@ -5,6 +5,7 @@ namespace App\Http\Middleware;
 use Illuminate\Foundation\Inspiring;
 use Illuminate\Http\Request;
 use Inertia\Middleware;
+use App\Support\LocaleConfig;
 
 class HandleInertiaRequests extends Middleware
 {
@@ -38,19 +39,10 @@ class HandleInertiaRequests extends Middleware
     {
         [$message, $author] = str(Inspiring::quotes()->random())->explode('-');
 
-        $supportedLocales = collect(explode(',', (string) env('APP_SUPPORTED_LOCALES', 'de,en')))
+        $supportedLocales = LocaleConfig::normalized();
-            ->map(fn ($l) => trim((string) $l))
+        $defaultLocale = LocaleConfig::canonicalize($supportedLocales[0] ?? null);
-            ->filter()
-            ->unique()
-            ->values()
-            ->all();
 
-        if (empty($supportedLocales)) {
+        $currentLocale = LocaleConfig::canonicalize($request->route('locale') ?? $request->segment(1) ?? app()->getLocale());
-            $supportedLocales = array_values(array_unique(array_filter([
-                config('app.locale'),
-                config('app.fallback_locale'),
-            ])));
-        }
 
         return [
             ...parent::share($request),
@@ -60,9 +52,10 @@ class HandleInertiaRequests extends Middleware
                 'user' => $request->user(),
             ],
             'supportedLocales' => $supportedLocales,
+            'defaultLocale' => $defaultLocale,
             'appUrl' => rtrim(config('app.url'), '/'),
             'sidebarOpen' => $request->cookie('sidebar_state', 'false') === 'true',
-            'locale' => app()->getLocale(),
+            'locale' => $currentLocale,
             'translations' => [
                 'marketing' => __('marketing'),
                 'auth' => __('auth'),

app/Http/Middleware/SetLocaleFromRequest.php

@@ -6,16 +6,18 @@ use Closure;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\App;
 use Illuminate\Support\Facades\Session;
+use App\Support\LocaleConfig;
 
 class SetLocaleFromRequest
 {
     public function handle(Request $request, Closure $next)
     {
-        $supportedLocales = $this->supportedLocales();
+        $supportedLocales = LocaleConfig::normalized();
 
-        $locale = (string) $request->route('locale');
+        $locale = (string) ($request->route('locale') ?? $request->segment(1));
+        $normalizedLocale = LocaleConfig::canonicalize($locale);
 
-        if (! $locale || ! in_array($locale, $supportedLocales, true)) {
+        if (! $locale || ! in_array($normalizedLocale, $supportedLocales, true)) {
             $preferred = Session::get('preferred_locale');
 
             if ($preferred && in_array($preferred, $supportedLocales, true)) {
@@ -27,35 +29,11 @@ class SetLocaleFromRequest
             return $next($request);
         }
 
-        App::setLocale($locale);
+        App::setLocale($normalizedLocale);
-        Session::put('preferred_locale', $locale);
+        Session::put('preferred_locale', $normalizedLocale);
-        Session::put('locale', $locale);
+        Session::put('locale', $normalizedLocale);
-        $request->attributes->set('preferred_locale', $locale);
+        $request->attributes->set('preferred_locale', $normalizedLocale);
 
         return $next($request);
     }
-
-    /**
-     * @return array<int, string>
-     */
-    private function supportedLocales(): array
-    {
-        $configured = array_filter(array_map(
-            static fn ($value) => trim((string) $value),
-            explode(',', (string) env('APP_SUPPORTED_LOCALES', ''))
-        ));
-
-        if (empty($configured)) {
-            $configured = array_filter([
-                config('app.locale'),
-                config('app.fallback_locale'),
-            ]);
-        }
-
-        if (empty($configured)) {
-            $configured = ['de', 'en'];
-        }
-
-        return array_values(array_unique($configured));
-    }
 }

app/Support/LocaleConfig.php

@@ -0,0 +1,79 @@
+<?php
+
+namespace App\Support;
+
+use Illuminate\Support\Arr;
+use Illuminate\Support\Str;
+
+class LocaleConfig
+{
+    /**
+     * Return configured locales from env/config as provided (may include region codes).
+     * @return array<int, string>
+     */
+    public static function configured(): array
+    {
+        $configured = array_filter(array_map(
+            static fn ($value) => trim((string) $value),
+            explode(',', (string) env('APP_SUPPORTED_LOCALES', ''))
+        ));
+
+        $baseLocales = array_filter([
+            config('app.locale'),
+            config('app.fallback_locale'),
+        ]);
+
+        $fallback = ['de', 'en'];
+
+        return array_values(array_unique([
+            ...$configured,
+            ...$baseLocales,
+            ...$fallback,
+        ]));
+    }
+
+    /**
+     * Return normalized short codes (language only, lowercase).
+     * @return array<int, string>
+     */
+    public static function normalized(): array
+    {
+        return collect(static::configured())
+            ->map(fn (string $code) => Str::of($code)->lower()->before('-')->before('_')->toString())
+            ->filter()
+            ->unique()
+            ->values()
+            ->all();
+    }
+
+    /**
+     * Pattern for route constraints: accept both configured and normalized variants.
+     */
+    public static function routePattern(): string
+    {
+        $all = collect(array_merge(static::configured(), static::normalized()))
+            ->map(fn (string $code) => preg_quote($code, '/'))
+            ->unique()
+            ->values()
+            ->all();
+
+        return implode('|', $all);
+    }
+
+    /**
+     * Canonicalize any incoming locale to a normalized short code if supported, otherwise fallback.
+     */
+    public static function canonicalize(?string $locale): string
+    {
+        $normalized = static::normalized();
+        $fallback = Arr::first($normalized, default: 'de');
+
+        if (! $locale) {
+            return $fallback;
+        }
+
+        $short = Str::of($locale)->lower()->before('-')->before('_')->toString();
+
+        return in_array($short, $normalized, true) ? $short : $fallback;
+    }
+}

public/lang/de/legal.json

@@ -1,5 +1,6 @@
 {
   "impressum": "Impressum",
+  "headline": "Rechtliches",
   "datenschutz": "Datenschutzerklärung",
   "impressum_title": "Impressum - Fotospiel",
   "datenschutz_title": "Datenschutzerklärung - Fotospiel",

public/lang/de/marketing.json

@@ -402,7 +402,8 @@
   },
   "footer": {
     "company": "S.E.B. Fotografie",
-    "rights_reserved": "Alle Rechte vorbehalten"
+    "rights_reserved": "Alle Rechte vorbehalten",
+    "social": "Social"
   },
   "register": {
     "free": "Kostenlos"

resources/js/app.tsx

@@ -11,9 +11,28 @@ import { Toaster } from 'react-hot-toast';
 import { ConsentProvider } from './contexts/consent';
 import CookieBanner from '@/components/consent/CookieBanner';
 import React from 'react';
+import { usePage } from '@inertiajs/react';
+import { useEffect } from 'react';
 
 const appName = import.meta.env.VITE_APP_NAME || 'Laravel';
 
+const LocaleSync: React.FC<{ children: React.ReactNode }> = ({ children }) => {
+    // usePage is only available inside Inertia-provided tree; guard for SSR/raw mounts
+    try {
+        const { props } = usePage<{ locale?: string }>();
+
+        useEffect(() => {
+            if (props.locale && i18n.language !== props.locale) {
+                i18n.changeLanguage(props.locale);
+            }
+        }, [props.locale]);
+    } catch (error) {
+        // noop – will be hydrated once Inertia provides context
+    }
+
+    return <>{children}</>;
+};
+
 createInertiaApp({
     title: (title) => title ? `${title} - ${appName}` : appName,
     resolve: (name) =>
@@ -46,7 +65,9 @@ createInertiaApp({
         root.render(
             <ConsentProvider>
                 <I18nextProvider i18n={i18n}>
-                    <App {...props} />
+                    <LocaleSync>
+                        <App {...props} />
+                    </LocaleSync>
                     <CookieBanner />
                     <Toaster position="top-right" toastOptions={{ duration: 4000 }} />
                 </I18nextProvider>

resources/js/hooks/useLocalizedRoutes.ts

@@ -1,75 +1,21 @@
 import { usePage } from '@inertiajs/react';
+import { buildLocalizedPath, defaultLocaleRewrites } from '@/lib/localizedPath';
 import { useLocale } from './useLocale';
 
-type LocalizedPathInput = string | null | undefined;
-
 export const useLocalizedRoutes = () => {
-  const { props } = usePage<{ supportedLocales?: string[] }>();
+  const { props } = usePage<{ supportedLocales?: string[]; defaultLocale?: string }>();
   const locale = useLocale();
   const supportedLocales = props.supportedLocales ?? [];
+  const defaultLocale = props.defaultLocale ?? 'de';
 
-  const fallbackLocale = (() => {
+  const localizedPath = (path: string | null | undefined, targetLocale?: string) =>
-    if (locale && supportedLocales.includes(locale)) {
+    buildLocalizedPath(
-      return locale;
+      path,
-    }
+      targetLocale ?? locale,
-
+      supportedLocales,
-    if (supportedLocales.length > 0) {
+      defaultLocale,
-      return supportedLocales[0];
+      defaultLocaleRewrites,
-    }
+    );
-
-    return 'de';
-  })();
-
-  const pathRewrites: Record<string, Record<string, string>> = {
-    '/kontakt': { en: '/contact' },
-    '/contact': { de: '/kontakt' },
-    '/so-funktionierts': { en: '/how-it-works' },
-    '/how-it-works': { de: '/so-funktionierts' },
-    '/anlaesse': { en: '/occasions' },
-    '/anlaesse/hochzeit': { en: '/occasions/wedding' },
-    '/anlaesse/geburtstag': { en: '/occasions/birthday' },
-    '/anlaesse/firmenevent': { en: '/occasions/corporate-event' },
-    '/anlaesse/konfirmation': { en: '/occasions/confirmation' },
-    '/occasions/wedding': { de: '/anlaesse/hochzeit' },
-    '/occasions/birthday': { de: '/anlaesse/geburtstag' },
-    '/occasions/corporate-event': { de: '/anlaesse/firmenevent' },
-    '/occasions/confirmation': { de: '/anlaesse/konfirmation' },
-  };
-
-  const rewriteForLocale = (path: string, targetLocale: string): string => {
-    const key = path === '' ? '/' : path;
-    const normalizedKey = key.startsWith('/') ? key : `/${key}`;
-    const rewrites = pathRewrites[normalizedKey] ?? {};
-
-    return rewrites[targetLocale] ?? normalizedKey;
-  };
-
-  const localizedPath = (path: LocalizedPathInput, targetLocale?: string) => {
-    if (typeof path !== 'string' || path.trim().length === 0) {
-      console.error('[useLocalizedRoutes] Invalid path input detected', {
-        path,
-        locale,
-        stack: new Error().stack,
-      });
-
-      return `/${fallbackLocale}`;
-    }
-
-    const nextLocale = targetLocale && supportedLocales.includes(targetLocale)
-      ? targetLocale
-      : fallbackLocale;
-
-    const trimmed = path.trim();
-    const [rawPath, rawQuery] = trimmed.split('?');
-    const normalizedPath = rawPath.startsWith('/') ? rawPath : `/${rawPath}`;
-    const rewritten = rewriteForLocale(normalizedPath, nextLocale);
-
-    const base = rewritten === '/' ? `/${nextLocale}` : `/${nextLocale}${rewritten}`;
-    const sanitisedBase = base.replace(/\/{2,}/g, '/');
-    const query = rawQuery ? `?${rawQuery}` : '';
-
-    return `${sanitisedBase}${query}`;
-  };
 
   return { localizedPath };
 };

resources/js/i18n.js

@@ -1,31 +0,0 @@
-import i18n from 'i18next';
-import { initReactI18next } from 'react-i18next';
-import Backend from 'i18next-http-backend';
-import LanguageDetector from 'i18next-browser-languagedetector';
-
-const isDev = typeof import.meta !== 'undefined' && Boolean(import.meta.env?.DEV);
-
-i18n
-  .use(Backend)
-  .use(LanguageDetector)
-  .use(initReactI18next)
-  .init({
-    fallbackLng: 'de',
-    debug: isDev,
-    interpolation: {
-      escapeValue: false,
-    },
-    backend: {
-      loadPath: '/lang/{{lng}}/{{ns}}.json',
-    },
-    ns: ['marketing', 'auth', 'profile', 'common', 'legal'],
-    defaultNS: 'marketing',
-    supportedLngs: ['de', 'en'],
-    detection: {
-      order: ['path', 'cookie', 'localStorage', 'htmlTag', 'subdomain'],
-      lookupFromPathIndex: 0,
-      caches: ['cookie'],
-    },
-  });
-
-export default i18n;

resources/js/i18n.ts

@@ -1,22 +1,29 @@
 import i18n from 'i18next';
 import { initReactI18next } from 'react-i18next';
 import Backend from 'i18next-http-backend';
+import LanguageDetector from 'i18next-browser-languagedetector';
 
-i18n.on('languageChanged', (lng) => {
+const supportedLngs = ['de', 'en'];
-  console.log('i18n languageChanged event:', lng);
+const fallbackLng = 'de';
-  console.trace('languageChanged trace for', lng);
+
-});
+const detection = {
+  order: ['path', 'localStorage', 'cookie', 'htmlTag', 'navigator'],
+  lookupFromPathIndex: 0,
+  caches: ['localStorage'],
+};
 
 i18n
   .use(Backend)
+  .use(LanguageDetector)
   .use(initReactI18next)
   .init({
-    lng: localStorage.getItem('i18nextLng') || 'de',
+    fallbackLng,
-    fallbackLng: 'de',
+    supportedLngs,
-    supportedLngs: ['de', 'en'],
     ns: ['marketing', 'auth', 'common', 'legal'],
     defaultNS: 'marketing',
     debug: import.meta.env.DEV,
+    load: 'languageOnly',
+    detection,
     interpolation: {
       escapeValue: false,
     },
@@ -32,4 +39,4 @@ i18n
     },
   });
 
-export default i18n;
+export default i18n;

resources/js/layouts/mainWebsite.tsx

@@ -26,8 +26,7 @@ type PageProps = {
 const MarketingLayout: React.FC<MarketingLayoutProps> = ({ children, title }) => {
   const page = usePage<PageProps>();
   const { url } = page;
-  const { t } = useTranslation('marketing');
+  const { t, i18n, ready } = useTranslation(['marketing', 'common', 'legal', 'auth']);
-  const i18n = useTranslation();
   const { locale, analytics, supportedLocales = ['de', 'en'], appUrl, auth } = page.props;
   const user = auth?.user ?? null;
   const { localizedPath } = useLocalizedRoutes();
@@ -94,11 +93,20 @@ const MarketingLayout: React.FC<MarketingLayoutProps> = ({ children, title }) =>
   };
 
   useEffect(() => {
-    if (locale && i18n.i18n.language !== locale) {
+    if (locale && i18n.language !== locale) {
-      i18n.i18n.changeLanguage(locale);
+      i18n.changeLanguage(locale);
     }
   }, [locale, i18n]);
 
+  if (!ready) {
+    return (
+      <div className="min-h-screen bg-white text-gray-900 dark:bg-gray-950 dark:text-gray-50 flex items-center justify-center">
+        <Head title="Fotospiel" />
+        <span className="text-sm text-gray-500 dark:text-gray-400">Lade Inhalte …</span>
+      </div>
+    );
+  }
+
   const marketing = page.props.translations?.marketing ?? {};
 
   const getString = (key: string, fallback: string) => {
@@ -132,11 +140,13 @@ const MarketingLayout: React.FC<MarketingLayoutProps> = ({ children, title }) =>
     const targetPath = localizedPath(relativePath, nextLocale);
     const targetUrl = `${targetPath}${rawQuery ? `?${rawQuery}` : ''}`;
 
-    i18n.i18n.changeLanguage(nextLocale);
     setMobileMenuOpen(false);
     router.visit(targetUrl, {
       replace: true,
       preserveState: false,
+      onSuccess: () => {
+        i18n.changeLanguage(nextLocale);
+      },
     });
   };
 

resources/js/lib/__tests__/localizedPath.test.ts

@@ -0,0 +1,29 @@
+import { describe, expect, it } from 'vitest';
+import { buildLocalizedPath, defaultLocaleRewrites } from '../localizedPath';
+
+describe('buildLocalizedPath', () => {
+  const supported = ['de', 'en'];
+
+  it('prefixes path with locale', () => {
+    expect(buildLocalizedPath('/packages', 'en', supported)).toBe('/en/packages');
+    expect(buildLocalizedPath('/packages', 'de', supported)).toBe('/de/packages');
+  });
+
+  it('applies rewrite rules between locales', () => {
+    expect(buildLocalizedPath('/kontakt', 'en', supported, 'de', defaultLocaleRewrites)).toBe('/en/contact');
+    expect(buildLocalizedPath('/contact', 'de', supported, 'de', defaultLocaleRewrites)).toBe('/de/kontakt');
+  });
+
+  it('preserves query strings', () => {
+    expect(buildLocalizedPath('/contact?ref=ad', 'de', supported)).toBe('/de/kontakt?ref=ad');
+  });
+
+  it('falls back to default locale when target not supported', () => {
+    expect(buildLocalizedPath('/demo', 'fr', supported)).toBe('/de/demo');
+  });
+
+  it('handles empty or invalid paths gracefully', () => {
+    expect(buildLocalizedPath('', 'en', supported)).toBe('/de');
+    expect(buildLocalizedPath(undefined, 'en', supported)).toBe('/de');
+  });
+});

resources/js/lib/localizedPath.ts

@@ -0,0 +1,57 @@
+export type LocaleRewriteMap = Record<string, Record<string, string>>;
+
+export const defaultLocaleRewrites: LocaleRewriteMap = {
+  '/': {},
+  '/kontakt': { en: '/contact' },
+  '/contact': { de: '/kontakt' },
+  '/so-funktionierts': { en: '/how-it-works' },
+  '/how-it-works': { de: '/so-funktionierts' },
+  '/anlaesse': { en: '/occasions' },
+  '/anlaesse/hochzeit': { en: '/occasions/wedding' },
+  '/anlaesse/geburtstag': { en: '/occasions/birthday' },
+  '/anlaesse/firmenevent': { en: '/occasions/corporate-event' },
+  '/anlaesse/konfirmation': { en: '/occasions/confirmation' },
+  '/occasions/wedding': { de: '/anlaesse/hochzeit' },
+  '/occasions/birthday': { de: '/anlaesse/geburtstag' },
+  '/occasions/corporate-event': { de: '/anlaesse/firmenevent' },
+  '/occasions/confirmation': { de: '/anlaesse/konfirmation' },
+};
+
+const sanitizePath = (input: string): string => {
+  if (!input || input.trim().length === 0) {
+    return '/';
+  }
+
+  const withLeading = input.startsWith('/') ? input : `/${input}`;
+  const withoutTrailing = withLeading.replace(/\/{2,}/g, '/');
+
+  return withoutTrailing;
+};
+
+export const buildLocalizedPath = (
+  path: string | null | undefined,
+  targetLocale: string | undefined,
+  supportedLocales: string[],
+  defaultLocale = 'de',
+  rewrites: LocaleRewriteMap = defaultLocaleRewrites,
+): string => {
+  const fallbackLocale = supportedLocales.length > 0 ? supportedLocales[0] : defaultLocale;
+  const nextLocale = targetLocale && supportedLocales.includes(targetLocale)
+    ? targetLocale
+    : fallbackLocale;
+
+  if (typeof path !== 'string' || path.trim().length === 0) {
+    return `/${fallbackLocale}`;
+  }
+
+  const trimmed = path.trim();
+  const [rawPath, rawQuery] = trimmed.split('?');
+  const normalizedPath = sanitizePath(rawPath);
+  const rewritesForPath = rewrites[normalizedPath] ?? {};
+  const rewrittenPath = rewritesForPath[nextLocale] ?? normalizedPath;
+  const base = rewrittenPath === '/' ? `/${nextLocale}` : `/${nextLocale}${rewrittenPath}`;
+  const sanitisedBase = base.replace(/\/{2,}/g, '/');
+  const query = rawQuery ? `?${rawQuery}` : '';
+
+  return `${sanitisedBase}${query}`;
+};

resources/js/pages/marketing/HowItWorks.tsx

@@ -38,10 +38,30 @@ const iconByUseCase: Record<string, React.ReactNode> = {
 };
 
 const HowItWorks: React.FC = () => {
-  const { t } = useTranslation('marketing');
+  const { t, ready } = useTranslation('marketing');
   const { localizedPath } = useLocalizedRoutes();
 
-  const hero = t('how_it_works_page.hero', { returnObjects: true }) as {
+  if (!ready) {
+    return (
+      <MarketingLayout title="Fotospiel">
+        <Head title="Fotospiel" />
+        <div className="container mx-auto px-4 py-16 text-center text-gray-600 dark:text-gray-300">
+          <p className="text-lg">Lade Inhalte …</p>
+        </div>
+      </MarketingLayout>
+    );
+  }
+
+  const hero = t('how_it_works_page.hero', {
+    returnObjects: true,
+    defaultValue: {
+      title: 'So funktioniert die Fotospiel App',
+      subtitle: '',
+      primaryCta: '',
+      secondaryCta: '',
+      stats: [],
+    },
+  }) as {
     title: string;
     subtitle: string;
     primaryCta: string;
@@ -49,41 +69,67 @@ const HowItWorks: React.FC = () => {
     stats: HeroStat[];
   };
 
-  const experience = t('how_it_works_page.experience', { returnObjects: true }) as {
+  const experience = t('how_it_works_page.experience', {
+    returnObjects: true,
+    defaultValue: {
+      host: { label: '', intro: '', steps: [], callouts: [] },
+      guest: { label: '', intro: '', steps: [], callouts: [] },
+    },
+  }) as {
     host: ExperienceGroup;
     guest: ExperienceGroup;
   };
 
-  const pillars = t('how_it_works_page.pillars', { returnObjects: true }) as Array<{
+  const pillars = t('how_it_works_page.pillars', {
+    returnObjects: true,
+    defaultValue: [],
+  }) as Array<{
     title: string;
     description: string;
   }>;
 
-  const timeline = t('how_it_works_page.timeline', { returnObjects: true }) as TimelineItem[];
+  const timeline = t('how_it_works_page.timeline', {
+    returnObjects: true,
+    defaultValue: [],
+  }) as TimelineItem[];
 
-  const useCases = t('how_it_works_page.use_cases', { returnObjects: true }) as {
+  const useCases = t('how_it_works_page.use_cases', {
+    returnObjects: true,
+    defaultValue: { title: '', description: '', tabs: [] },
+  }) as {
     title: string;
     description: string;
     tabs: UseCase[];
   };
 
-  const checklist = t('how_it_works_page.checklist', { returnObjects: true }) as {
+  const checklist = t('how_it_works_page.checklist', {
+    returnObjects: true,
+    defaultValue: { title: '', items: [], cta: '' },
+  }) as {
     title: string;
     items: string[];
     cta: string;
   };
 
-  const faq = t('how_it_works_page.faq', { returnObjects: true }) as {
+  const faq = t('how_it_works_page.faq', {
+    returnObjects: true,
+    defaultValue: { title: '', items: [] },
+  }) as {
     title: string;
     items: FaqItem[];
   };
 
-  const support = t('how_it_works_page.support', { returnObjects: true }) as {
+  const support = t('how_it_works_page.support', {
+    returnObjects: true,
+    defaultValue: { title: '', description: '', cta: '' },
+  }) as {
     title: string;
     description: string;
     cta: string;
   };
 
+  const heroStats = Array.isArray(hero.stats) ? hero.stats : [];
+
   return (
     <MarketingLayout title={hero.title}>
       <Head title={hero.title} />
@@ -116,7 +162,7 @@ const HowItWorks: React.FC = () => {
           </div>
           <div className="flex-1">
             <div className="grid gap-4 sm:grid-cols-3">
-              {hero.stats.map((stat) => (
+              {heroStats.map((stat) => (
                 <Card key={stat.label} className="border-pink-100/70 shadow-none dark:border-pink-900/40">
                   <CardHeader className="pb-2">
                     <CardTitle className="text-2xl font-semibold text-pink-600 dark:text-pink-300">

resources/js/pages/marketing/Packages.tsx

@@ -1016,7 +1016,7 @@ const PackageDetailGrid: React.FC<PackageDetailGridProps> = ({
         </div>
       </section>
 
-      {/* Details overlay */}
+{/* Details overlay */}
       {selectedPackage && (
         isMobile ? (
           <Sheet open={open} onOpenChange={setOpen}>
@@ -1047,8 +1047,15 @@ const PackageDetailGrid: React.FC<PackageDetailGridProps> = ({
 
 const handleDetailAutoFocus = (event: Event) => {
   event.preventDefault();
-  dialogScrollRef.current?.scrollTo({ top: 0 });
+
-  dialogHeadingRef.current?.focus();
+  // Guard in case refs are not in scope when autofocusing
+  if (typeof dialogScrollRef !== 'undefined') {
+    dialogScrollRef.current?.scrollTo({ top: 0 });
+  }
+
+  if (typeof dialogHeadingRef !== 'undefined') {
+    dialogHeadingRef.current?.focus();
+  }
 };
 
 Packages.layout = (page: React.ReactNode) => page;

resources/js/ssr.tsx

@@ -2,6 +2,8 @@ import { createInertiaApp } from '@inertiajs/react';
 import createServer from '@inertiajs/react/server';
 import { resolvePageComponent } from 'laravel-vite-plugin/inertia-helpers';
 import ReactDOMServer from 'react-dom/server';
+import { I18nextProvider } from 'react-i18next';
+import i18n from './i18n';
 
 const appName = import.meta.env.VITE_APP_NAME || 'Laravel';
 
@@ -12,7 +14,17 @@ createServer((page) =>
         title: (title) => (title ? `${title} - ${appName}` : appName),
         resolve: (name) => resolvePageComponent(`./pages/${name}.tsx`, import.meta.glob('./pages/**/*.tsx')),
         setup: ({ App, props }) => {
-            return <App {...props} />;
+            const locale = (props.initialPage?.props as Record<string, unknown> | undefined)?.locale as string | undefined;
+
+            if (locale && i18n.language !== locale) {
+                i18n.changeLanguage(locale);
+            }
+
+            return (
+                <I18nextProvider i18n={i18n}>
+                    <App {...props} />
+                </I18nextProvider>
+            );
         },
     }),
 );

routes/web.php

@@ -17,6 +17,7 @@ use App\Http\Controllers\Tenant\EventPhotoArchiveController;
 use App\Http\Controllers\TenantAdminAuthController;
 use App\Http\Controllers\TenantAdminGoogleController;
 use App\Models\Package;
+use App\Support\LocaleConfig;
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Route;
 use Inertia\Inertia;
@@ -24,20 +25,8 @@ use Inertia\Inertia;
 require __DIR__.'/auth.php';
 require __DIR__.'/settings.php';
 
-$configuredLocales = array_filter(array_map(
+$supportedLocales = LocaleConfig::normalized();
-    static fn ($value) => trim((string) $value),
+$localePattern = LocaleConfig::routePattern();
-    explode(',', (string) env('APP_SUPPORTED_LOCALES', ''))
-));
-
-if (empty($configuredLocales)) {
-    $configuredLocales = array_filter([
-        config('app.locale'),
-        config('app.fallback_locale'),
-    ]);
-}
-
-$supportedLocales = array_values(array_unique($configuredLocales ?: ['de', 'en']));
-$localePattern = implode('|', $supportedLocales);
 
 $rewritePath = static function (string $path, string $locale): string {
     $normalized = '/'.ltrim($path, '/');
@@ -82,9 +71,6 @@ $determinePreferredLocale = static function (Request $request) use ($supportedLo
 
 Route::prefix('{locale}')
     ->where(['locale' => $localePattern])
-    ->middleware([
-        \App\Http\Middleware\SetLocaleFromRequest::class,
-    ])
     ->group(function () {
         Route::get('/', [MarketingController::class, 'index'])->name('marketing.home');
 

tests/Feature/Marketing/MarketingLocaleRoutingTest.php

@@ -0,0 +1,58 @@
+<?php
+
+namespace Tests\Feature\Marketing;
+
+use Inertia\Testing\AssertableInertia as Assert;
+use Tests\TestCase;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+
+class MarketingLocaleRoutingTest extends TestCase
+{
+    use RefreshDatabase;
+    public function test_home_route_accepts_german_locale_prefix(): void
+    {
+        $response = $this->get('/de');
+
+        $response->assertOk();
+        $response->assertInertia(fn (Assert $page) => $page
+            ->component('marketing/Home')
+            ->where('locale', 'de')
+            ->where('supportedLocales.0', 'de')
+        );
+    }
+
+    public function test_home_route_accepts_english_locale_prefix(): void
+    {
+        $response = $this->get('/en');
+
+        $response->assertOk();
+        $response->assertInertia(fn (Assert $page) => $page
+            ->component('marketing/Home')
+            ->where('locale', 'en')
+            ->where('supportedLocales.1', 'en')
+        );
+    }
+
+    public function test_contact_route_respects_locale_and_component(): void
+    {
+        $response = $this->get('/en/contact');
+
+        // Debug response headers for redirect source during development
+        // @phpstan-ignore-next-line
+        // var_dump($response->headers->all());
+
+        $response->assertOk();
+        $response->assertInertia(fn (Assert $page) => $page
+            ->component('marketing/Kontakt')
+            ->where('locale', 'en')
+        );
+
+        $responseDe = $this->get('/de/kontakt');
+
+        $responseDe->assertOk();
+        $responseDe->assertInertia(fn (Assert $page) => $page
+            ->component('marketing/Kontakt')
+            ->where('locale', 'de')
+        );
+    }
+}