diff --git a/astro.config.mjs b/astro.config.mjs
index 5b74eac..761b9cb 100644
--- a/astro.config.mjs
+++ b/astro.config.mjs
@@ -6,23 +6,68 @@ import preact from "@astrojs/preact";
 export default defineConfig({
   site: "https://fuz.dariuszm.eu", 
   output: 'server',
+  
   adapter: node({
     mode: "standalone"
   }),
+  
   server: {
     host: process.env.HOST || '0.0.0.0',
     port: parseInt(process.env.PORT || '4321'),
   },
+  
+  // ✅ Build optimizations
+  build: {
+    inlineStylesheets: 'auto',  // Inline małe CSS-y (<4KB)
+  },
+  
   vite: {
     build: {
-      minify: "esbuild",
-      cssMinify: "esbuild",
+      minify: "esbuild",        // ✅ Minifikacja JS
+      cssMinify: true,          // ✅ Minifikacja CSS (zmienione z "esbuild" na true)
+      
+      // ✅ Rollup optimizations
+      rollupOptions: {
+        output: {
+          // Lepsze nazwy plików z hashami
+          assetFileNames: 'assets/[name].[hash][extname]',
+          chunkFileNames: 'chunks/[name].[hash].js',
+          entryFileNames: 'entry/[name].[hash].js',
+          
+          // ✅ Code splitting - Preact w osobnym bundle
+          manualChunks: (id) => {
+            if (id.includes('node_modules')) {
+              if (id.includes('preact')) {
+                return 'vendor-preact';
+              }
+              if (id.includes('marked')) {
+                return 'vendor-marked';
+              }
+              return 'vendor';
+            }
+          },
+        },
+      },
+      
+      // ✅ Chunk size warnings (opcjonalne)
+      chunkSizeWarningLimit: 500, // KB
     },
+    
+    // ✅ CSS optimization dla Tailwind
+    // css: {
+    //   transformer: 'lightningcss', // Szybszy CSS transformer npm install -D lightningcss
+    // },
   },
+  
+  // ✅ HTML compression
+  compressHTML: true,
+  
   integrations: [
-    preact(),
+    preact({
+      compat: true  // ✅ Jeśli używasz React bibliotek
+    }),
     tailwind({
       applyBaseStyles: true
     })
   ]
-});
+});
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