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

package.json

@@ -0,0 +1,19 @@
+{
+  "name": "tender-shell",
+  "type": "module",
+  "version": "0.0.1",
+  "engines": {
+    "node": ">=22.12.0"
+  },
+  "scripts": {
+    "dev": "astro dev",
+    "build": "astro build",
+    "preview": "astro preview",
+    "astro": "astro"
+  },
+  "dependencies": {
+    "@tailwindcss/vite": "^4.2.2",
+    "astro": "^6.0.8",
+    "tailwindcss": "^4.2.2"
+  }
+}