Fix: Hell-Dunkel-Modus wiederhergestellt

- Light-Mode: Originale helle Farben beibehalten
- Dark-Mode: Fly.io-inspirierte dunkle Farben mit Pink-Akzent
- Gradient-Mesh nur im Dark-Mode sichtbar

components/hero.tsx

@@ -9,13 +9,13 @@ import { ProgrammerGraphic } from './programmer-graphic'
 export function Hero() {
   return (
     <section className="relative min-h-screen flex items-center pt-20 lg:pt-0">
-      {/* Fly.io-style gradient mesh background */}
-      <div className="absolute inset-0 bg-gradient-mesh" />
+      {/* Fly.io-style gradient mesh background (dark mode only) */}
+      <div className="absolute inset-0 bg-gradient-mesh hidden dark:block" />
       
       {/* Subtle grid overlay */}
       <div className="absolute inset-0 overflow-hidden">
         <div 
-          className="absolute inset-0 opacity-[0.03]"
+          className="absolute inset-0 opacity-[0.02] dark:opacity-[0.04]"
           style={{
             backgroundImage: `
               linear-gradient(to right, currentColor 1px, transparent 1px),