Build portfolio site - Astro + Tailwind, trilingual structure

- Astro 5.x + Tailwind CSS 4.x
- Dark theme with warm orange accent (#f97316)
- i18n routing: /en/, /de/, /es/ (English content complete, DE/ES placeholders)
- Components: Navbar, Hero, Services (4 cards), Projects (4 case studies), About, Contact, Footer
- Fade-in scroll animations
- Mobile-responsive with hamburger menu
- All content from content/*.md integrated
- SEO meta tags, Open Graph tags
- Clean build with no errors

src/i18n/utils.ts

@@ -0,0 +1,15 @@
+import en from './en.json';
+import de from './de.json';
+import es from './es.json';
+
+const translations = {
+  en,
+  de,
+  es
+} as const;
+
+export type Locale = keyof typeof translations;
+
+export function getTranslations(locale: Locale) {
+  return translations[locale] || translations.en;
+}