feat: replace bento grid with hybrid liquid glass design and add darkmode toggle

src/pages/index.astro

@@ -2,15 +2,15 @@
 import Layout from '../layouts/Layout.astro';
 import Navbar from '../components/Navbar.astro';
 import Footer from '../components/Footer.astro';
-import HeroAndBento from '../components/HeroAndBento.astro';
+import HeroAndLiquidGlass from '../components/HeroAndLiquidGlass.astro';
 ---
 
 <Layout title="N&D i-t SOLUTIONS | Webdesign & Entwicklung">
   <Navbar />
   
   <main>
-    {/* Clean, modular Hero and Bento section (0 KB JS, tactile details) */}
-    <HeroAndBento />
+    {/* Clean, modular Hero and Liquid Glass section */}
+    <HeroAndLiquidGlass />
     
     <!-- Contact section (separate, clean layout) -->
     <section id="contact" class="py-20 bg-[#0B0F19] relative border-t border-white/5">