From d99c0e2429a167e6423d0751cd94cdf3b8ed9e8a Mon Sep 17 00:00:00 2001
From: Sascha Bach <freelancer@sascha-bach.de>
Date: Wed, 26 Nov 2025 12:21:04 +0100
Subject: [PATCH] zweisprachigkeit implementiert

---
 src/app/PortfolioApp.tsx                      |  7 +-
 src/components/LanguageToggle.tsx             | 43 ++++++++++++
 src/components/ThemeToggle.tsx                |  4 +-
 src/components/layout/Footer.tsx              |  4 +-
 src/components/layout/Navigation.tsx          |  6 +-
 src/components/sections/AboutSection.tsx      |  7 +-
 .../sections/CertificationsSection.tsx        |  7 +-
 src/components/sections/ContactSection.tsx    |  5 +-
 src/components/sections/HeroSection.tsx       |  7 +-
 src/components/sections/ProjectsSection.tsx   |  7 +-
 src/components/sections/ServicesSection.tsx   |  7 +-
 src/components/sections/SkillsSection.tsx     |  7 +-
 src/config/locales/en/index.ts                | 16 ++---
 src/config/projects-config.ts                 |  1 -
 src/contexts/LanguageContext.tsx              | 66 +++++++++++++++++++
 src/pages/ImprintPage.tsx                     |  3 +-
 src/pages/PrivacyPolicy.tsx                   |  5 +-
 src/scss/language-toggle.scss                 | 48 ++++++++++++++
 src/scss/layout/topbar.scss                   |  4 ++
 19 files changed, 215 insertions(+), 39 deletions(-)
 create mode 100644 src/components/LanguageToggle.tsx
 create mode 100644 src/contexts/LanguageContext.tsx
 create mode 100644 src/scss/language-toggle.scss

diff --git a/src/app/PortfolioApp.tsx b/src/app/PortfolioApp.tsx
index af94419..667908b 100644
--- a/src/app/PortfolioApp.tsx
+++ b/src/app/PortfolioApp.tsx
@@ -1,7 +1,12 @@
+import { LanguageProvider } from '../contexts/LanguageContext';
 import AppRouter from './AppRouter';
 
 function PortfolioApp() {
-  return <AppRouter />;
+  return (
+    <LanguageProvider>
+      <AppRouter />
+    </LanguageProvider>
+  );
 }
 
 export default PortfolioApp;
diff --git a/src/components/LanguageToggle.tsx b/src/components/LanguageToggle.tsx
new file mode 100644
index 0000000..9114e31
--- /dev/null
+++ b/src/components/LanguageToggle.tsx
@@ -0,0 +1,43 @@
+import { useLanguage } from '../contexts/LanguageContext';
+import '../scss/language-toggle.scss';
+
+export default function LanguageToggle() {
+  const { language, setLanguage } = useLanguage();
+
+  const handleLanguageChange = (newLang: 'en' | 'de') => {
+    if (newLang !== language) {
+      setLanguage(newLang);
+      // Announce language change to screen readers
+      const announcement = document.createElement('div');
+      announcement.setAttribute('role', 'status');
+      announcement.setAttribute('aria-live', 'polite');
+      announcement.setAttribute('class', 'sr-only');
+      announcement.textContent = `Language changed to ${newLang === 'en' ? 'English' : 'Deutsch'}`;
+      document.body.appendChild(announcement);
+      setTimeout(() => announcement.remove(), 1000);
+    }
+  };
+
+  return (
+    <div className="language-toggle" role="group" aria-label="Language selection">
+      <button
+        className={`language-toggle__button ${language === 'en' ? 'language-toggle__button--active' : ''}`}
+        onClick={() => handleLanguageChange('en')}
+        aria-label="Switch to English"
+        aria-pressed={language === 'en'}
+        type="button"
+      >
+        EN
+      </button>
+      <button
+        className={`language-toggle__button ${language === 'de' ? 'language-toggle__button--active' : ''}`}
+        onClick={() => handleLanguageChange('de')}
+        aria-label="Zu Deutsch wechseln"
+        aria-pressed={language === 'de'}
+        type="button"
+      >
+        DE
+      </button>
+    </div>
+  );
+}
diff --git a/src/components/ThemeToggle.tsx b/src/components/ThemeToggle.tsx
index 70d698d..cd1a0d8 100644
--- a/src/components/ThemeToggle.tsx
+++ b/src/components/ThemeToggle.tsx
@@ -1,5 +1,5 @@
 import React from 'react';
-import { getTexts } from '../config/texts';
+import { useLanguage } from '../contexts/LanguageContext';
 
 type Props = Readonly<{
   theme: 'light' | 'dark';
@@ -10,7 +10,7 @@ export default function ThemeToggle({
   theme,
   setTheme
 }: Props) {
-  const texts = getTexts();
+  const { texts } = useLanguage();
 
   const toggleTheme = () => {
     setTheme(theme === 'light' ? 'dark' : 'light');
diff --git a/src/components/layout/Footer.tsx b/src/components/layout/Footer.tsx
index 46d12f2..3c1f06d 100644
--- a/src/components/layout/Footer.tsx
+++ b/src/components/layout/Footer.tsx
@@ -1,10 +1,10 @@
 import { Github, Linkedin, Mail } from 'lucide-react';
 import { Link } from 'react-router-dom';
 import { personalConfig, createEmailLink } from '../../config/personal';
-import { getTexts } from '../../config/texts';
+import { useLanguage } from '../../contexts/LanguageContext';
 
 export default function Footer() {
-  const texts = getTexts();
+  const { texts } = useLanguage();
   // Email obfuscation function using config
   const handleEmailClick = (e: React.MouseEvent) => {
     e.preventDefault();
diff --git a/src/components/layout/Navigation.tsx b/src/components/layout/Navigation.tsx
index d212ed7..3467635 100644
--- a/src/components/layout/Navigation.tsx
+++ b/src/components/layout/Navigation.tsx
@@ -1,9 +1,10 @@
 import { useState } from 'react';
 import { Link, useLocation, useNavigate } from 'react-router-dom';
 import ThemeToggle from '../ThemeToggle';
+import LanguageToggle from '../LanguageToggle';
 import MobileMenu from './MobileMenu';
 import { personalConfig } from '../../config/personal';
-import { getTexts } from '../../config/texts';
+import { useLanguage } from '../../contexts/LanguageContext';
 import { scrollToSection } from '../../utils/scrollUtils';
 
 type Props = {
@@ -18,7 +19,7 @@ export default function Navbar({
   const [menuOpen, setMenuOpen] = useState(false);
   const location = useLocation();
   const navigate = useNavigate();
-  const texts = getTexts();
+  const { texts } = useLanguage();
 
   const menuItems = texts.navigation.menuItems;
 
@@ -43,6 +44,7 @@ export default function Navbar({
             {item}
           </button>
         ))}
+        <LanguageToggle />
         <ThemeToggle theme={theme} setTheme={setTheme} />
         {/* Burger Button für Mobile */}
         <button
diff --git a/src/components/sections/AboutSection.tsx b/src/components/sections/AboutSection.tsx
index 7b79049..2ada3d9 100644
--- a/src/components/sections/AboutSection.tsx
+++ b/src/components/sections/AboutSection.tsx
@@ -1,5 +1,5 @@
 import { Code, Palette, ShieldCheck, Eye } from 'lucide-react';
-import { getTexts } from '../../config/texts';
+import { useLanguage } from '../../contexts/LanguageContext';
 import type { Service } from '../../data/Service';
 import saschaImage from '../../assets/sascha.png';
 
@@ -13,8 +13,9 @@ interface AboutSectionProps {
 }
 
 export default function AboutSection(props: AboutSectionProps = {}) {
-  const texts = getTexts().about;
-  const accessibilityTexts = getTexts().accessibility;
+  const { texts: allTexts } = useLanguage();
+  const texts = allTexts.about;
+  const accessibilityTexts = allTexts.accessibility;
 
   // Use centralized texts as defaults, allow props to override
   const {
diff --git a/src/components/sections/CertificationsSection.tsx b/src/components/sections/CertificationsSection.tsx
index f29769d..a04aea4 100644
--- a/src/components/sections/CertificationsSection.tsx
+++ b/src/components/sections/CertificationsSection.tsx
@@ -1,5 +1,5 @@
 import { Award } from 'lucide-react';
-import { getTexts } from '../../config/texts';
+import { useLanguage } from '../../contexts/LanguageContext';
 import type { Certification } from '../../data/Certification';
 
 interface CertificationsSectionProps {
@@ -9,8 +9,9 @@ interface CertificationsSectionProps {
 }
 
 export default function CertificationsSection(props: CertificationsSectionProps = {}) {
-  const texts = getTexts().certifications;
-  const accessibilityTexts = getTexts().accessibility;
+  const { texts: allTexts } = useLanguage();
+  const texts = allTexts.certifications;
+  const accessibilityTexts = allTexts.accessibility;
 
   // Use centralized texts as defaults, allow props to override  
   const {
diff --git a/src/components/sections/ContactSection.tsx b/src/components/sections/ContactSection.tsx
index 70790bb..e0f2d42 100644
--- a/src/components/sections/ContactSection.tsx
+++ b/src/components/sections/ContactSection.tsx
@@ -1,6 +1,6 @@
 import { Mail, ExternalLink, Send } from 'lucide-react';
 import { personalConfig, getObfuscatedEmail } from '../../config/personal';
-import { getTexts } from '../../config/texts';
+import { useLanguage } from '../../contexts/LanguageContext';
 
 interface ContactSectionProps {
   title?: string;
@@ -19,7 +19,8 @@ interface ContactSectionProps {
 }
 
 export default function ContactSection(props: ContactSectionProps = {}) {
-  const texts = getTexts().contact;
+  const { texts: allTexts } = useLanguage();
+  const texts = allTexts.contact;
 
   const {
     title = texts.title,
diff --git a/src/components/sections/HeroSection.tsx b/src/components/sections/HeroSection.tsx
index 59feabd..e794ea5 100644
--- a/src/components/sections/HeroSection.tsx
+++ b/src/components/sections/HeroSection.tsx
@@ -2,7 +2,7 @@ import { Download } from 'lucide-react';
 import { useLocation, useNavigate } from 'react-router-dom';
 import type { StatItem } from '../../data/StatItem';
 import { scrollToProjects } from '../../utils/scrollUtils';
-import { getTexts } from '../../config/texts';
+import { useLanguage } from '../../contexts/LanguageContext';
 import resumePDF from '../../assets/CV_Sascha_Bach.pdf';
 
 interface HeroSectionProps {
@@ -15,8 +15,9 @@ interface HeroSectionProps {
 }
 
 export default function HeroSection(props: HeroSectionProps = {}) {
-  const texts = getTexts().hero;
-  const accessibilityTexts = getTexts().accessibility;
+  const { texts: allTexts } = useLanguage();
+  const texts = allTexts.hero;
+  const accessibilityTexts = allTexts.accessibility;
 
   // Use centralized texts as defaults, allow props to override
   const {
diff --git a/src/components/sections/ProjectsSection.tsx b/src/components/sections/ProjectsSection.tsx
index 46c2797..e41e6be 100644
--- a/src/components/sections/ProjectsSection.tsx
+++ b/src/components/sections/ProjectsSection.tsx
@@ -1,6 +1,6 @@
 import { GitBranch, ExternalLink } from 'lucide-react';
 import { useState, useRef, useEffect, type KeyboardEvent } from 'react';
-import { getTexts } from '../../config/texts';
+import { useLanguage } from '../../contexts/LanguageContext';
 import { projectsData } from '../../config/projects-config';
 import type { Project } from '../../data/Project';
 
@@ -12,8 +12,9 @@ interface ProjectsSectionProps {
 }
 
 export default function ProjectsSection(props: ProjectsSectionProps = {}) {
-  const texts = getTexts().projects;
-  const accessibilityTexts = getTexts().accessibility;
+  const { texts: allTexts } = useLanguage();
+  const texts = allTexts.projects;
+  const accessibilityTexts = allTexts.accessibility;
   const [activeCardIndex, setActiveCardIndex] = useState<number | null>(null);
   const [focusedActionIndex, setFocusedActionIndex] = useState<number>(0);
   const cardRefs = useRef<(HTMLElement | null)[]>([]);
diff --git a/src/components/sections/ServicesSection.tsx b/src/components/sections/ServicesSection.tsx
index fb7ed56..772d245 100644
--- a/src/components/sections/ServicesSection.tsx
+++ b/src/components/sections/ServicesSection.tsx
@@ -1,5 +1,5 @@
 import { Eye, Lightbulb, Palette, Laptop, Rocket, ShieldCheck } from 'lucide-react';
-import { getTexts } from '../../config/texts';
+import { useLanguage } from '../../contexts/LanguageContext';
 import type { Service } from '../../data/Service';
 
 interface ServicesSectionProps {
@@ -9,8 +9,9 @@ interface ServicesSectionProps {
 }
 
 export default function ServicesSection(props: ServicesSectionProps = {}) {
-  const texts = getTexts().services;
-  const accessibilityTexts = getTexts().accessibility;
+  const { texts: allTexts } = useLanguage();
+  const texts = allTexts.services;
+  const accessibilityTexts = allTexts.accessibility;
 
   // Use centralized texts as defaults, allow props to override  
   const {
diff --git a/src/components/sections/SkillsSection.tsx b/src/components/sections/SkillsSection.tsx
index 2a6dd5a..2006c51 100644
--- a/src/components/sections/SkillsSection.tsx
+++ b/src/components/sections/SkillsSection.tsx
@@ -1,4 +1,4 @@
-import { getTexts } from '../../config/texts';
+import { useLanguage } from '../../contexts/LanguageContext';
 import type { Skill } from '../../data/Skill';
 
 interface SkillCategory {
@@ -27,8 +27,9 @@ const getColorByPosition = (index: number): string => {
 };
 
 export default function SkillsSection(props: SkillsSectionProps = {}) {
-  const texts = getTexts().skills;
-  const accessibilityTexts = getTexts().accessibility;
+  const { texts: allTexts } = useLanguage();
+  const texts = allTexts.skills;
+  const accessibilityTexts = allTexts.accessibility;
 
   // Use centralized texts as defaults, allow props to override
   const {
diff --git a/src/config/locales/en/index.ts b/src/config/locales/en/index.ts
index 406d8e3..a18654c 100644
--- a/src/config/locales/en/index.ts
+++ b/src/config/locales/en/index.ts
@@ -209,23 +209,23 @@ export interface TextConfig {
   privacyPolicy: {
     title: string;
     lastUpdated: string;
+    introTitle: string;
+    introText: string;
     dataCollectionTitle: string;
     dataCollectionText: string;
     dataCollectionList: string[];
-    purposeTitle: string;
-    purposeText: string;
-    providerTitle: string;
-    providerText: string;
-    retentionTitle: string;
-    retentionText: string;
+    webhostingTitle: string;
+    webhostingText: string;
+    webhostingProvider: string;
+    webhostingProviderName: string;
+    webhostingProviderAddress: string;
+    webhostingProviderWebsite: string;
     rightsTitle: string;
     rightsText: string;
     rightsList: string[];
     contactTitle: string;
     contactText: string;
     contactEmail: string;
-    legalBasisTitle: string;
-    legalBasisText: string;
   };
 
   // Accessibility and Navigation
diff --git a/src/config/projects-config.ts b/src/config/projects-config.ts
index 9a6efb6..0315bec 100644
--- a/src/config/projects-config.ts
+++ b/src/config/projects-config.ts
@@ -2,7 +2,6 @@ import portfolioImage from '../assets/portfolio.PNG';
 import ergoVRImage from '../assets/ErgoVR.PNG';
 import icaraceImage from '../assets/icarace.PNG';
 import dancaAlegriaImage from '../assets/Danca-Alegria.png';
-import { personalConfig } from './personal';
 import { projects } from './locales/en/projects';
 import type { Project } from '../data/Project';
 
diff --git a/src/contexts/LanguageContext.tsx b/src/contexts/LanguageContext.tsx
new file mode 100644
index 0000000..464ce91
--- /dev/null
+++ b/src/contexts/LanguageContext.tsx
@@ -0,0 +1,66 @@
+import { createContext, useContext, useState, useEffect, type ReactNode } from 'react';
+import { en, type TextConfig } from '../config/locales/en';
+import { de } from '../config/locales/de';
+
+type Language = 'en' | 'de';
+
+interface LanguageContextType {
+  language: Language;
+  setLanguage: (lang: Language) => void;
+  texts: TextConfig;
+}
+
+const LanguageContext = createContext<LanguageContextType | undefined>(undefined);
+
+const LANGUAGE_KEY = 'preferred-language';
+
+function getBrowserLanguage(): Language {
+  const browserLang = navigator.language.toLowerCase();
+  if (browserLang.startsWith('de')) {
+    return 'de';
+  }
+  return 'en'; // Default to English for all other languages
+}
+
+function getSavedLanguage(): Language | null {
+  const saved = localStorage.getItem(LANGUAGE_KEY);
+  if (saved === 'en' || saved === 'de') {
+    return saved;
+  }
+  return null;
+}
+
+export function LanguageProvider({ children }: { children: ReactNode }) {
+  const [language, setLanguageState] = useState<Language>(() => {
+    // First check localStorage, then browser language, then default to English
+    return getSavedLanguage() || getBrowserLanguage();
+  });
+
+  const texts = language === 'de' ? de : en;
+
+  const setLanguage = (lang: Language) => {
+    setLanguageState(lang);
+    localStorage.setItem(LANGUAGE_KEY, lang);
+    // Update HTML lang attribute for accessibility and SEO
+    document.documentElement.lang = lang;
+  };
+
+  useEffect(() => {
+    // Set initial lang attribute
+    document.documentElement.lang = language;
+  }, [language]);
+
+  return (
+    <LanguageContext.Provider value={{ language, setLanguage, texts }}>
+      {children}
+    </LanguageContext.Provider>
+  );
+}
+
+export function useLanguage() {
+  const context = useContext(LanguageContext);
+  if (context === undefined) {
+    throw new Error('useLanguage must be used within a LanguageProvider');
+  }
+  return context;
+}
diff --git a/src/pages/ImprintPage.tsx b/src/pages/ImprintPage.tsx
index cf21317..1cd7aee 100644
--- a/src/pages/ImprintPage.tsx
+++ b/src/pages/ImprintPage.tsx
@@ -3,7 +3,8 @@ import { personalConfig } from '../config/personal';
 import { getTexts } from '../config/texts';
 
 export default function ImprintPage() {
-  const texts = getTexts().imprint;
+  const { texts: allTexts } = useLanguage();
+  const texts = allTexts.imprint;
 
   useEffect(() => {
     // Prevent indexing of this page
diff --git a/src/pages/PrivacyPolicy.tsx b/src/pages/PrivacyPolicy.tsx
index 88e3d8c..43ba8fb 100644
--- a/src/pages/PrivacyPolicy.tsx
+++ b/src/pages/PrivacyPolicy.tsx
@@ -1,8 +1,9 @@
 import { useEffect } from 'react';
-import { getTexts } from '../config/texts';
+import { useLanguage } from '../contexts/LanguageContext';
 
 export default function PrivacyPolicy() {
-  const texts = getTexts().privacyPolicy;
+  const { texts: allTexts } = useLanguage();
+  const texts = allTexts.privacyPolicy;
 
   useEffect(() => {
     // Prevent indexing of this page
diff --git a/src/scss/language-toggle.scss b/src/scss/language-toggle.scss
new file mode 100644
index 0000000..f4f3009
--- /dev/null
+++ b/src/scss/language-toggle.scss
@@ -0,0 +1,48 @@
+@use './variables' as *;
+@use './globals';
+
+.language-toggle {
+  display: flex;
+  gap: 0.25rem;
+  background: transparent;
+  border: 1px solid var(--color-text-muted);
+  border-radius: $border-radius-sm;
+  padding: 0.25rem;
+
+  &__button {
+    padding: 0.375rem 0.75rem;
+    font-size: 0.875rem;
+    font-weight: 500;
+    border: none;
+    border-radius: 0.25rem;
+    background: transparent;
+    color: var(--color-text);
+    cursor: pointer;
+    transition: all 0.2s ease;
+    @extend %hover-lift;
+
+    &:hover {
+      color: var(--color-text);
+    }
+
+    &:focus {
+      outline: 2px solid var(--color-primary);
+      outline-offset: 2px;
+    }
+
+    &:active {
+      box-shadow: 0 2px 4px var(--box-shadow-active);
+      transform: translateY(0);
+    }
+
+    &--active {
+      background: var(--color-primary);
+      color: var(--color-background);
+
+      &:hover {
+        background: var(--color-primary);
+        color: var(--color-background);
+      }
+    }
+  }
+}
diff --git a/src/scss/layout/topbar.scss b/src/scss/layout/topbar.scss
index 69f0085..a7a7c98 100644
--- a/src/scss/layout/topbar.scss
+++ b/src/scss/layout/topbar.scss
@@ -16,6 +16,10 @@
   }
 
   &__container {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+
     &__button {
       @extend %button-reset;
       @extend %hover-lift;