Fix Nuxt 4 TailwindCSS configuration: add Tailwind directives and proper config

assets/css/main.css

@@ -1,6 +1,10 @@
-/* Inter font from Google Fonts - Clean, modern sans-serif */
 @import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');
 
+/* TailwindCSS base styles */
+@tailwind base;
+@tailwind components;
+@tailwind utilities;
+
 /* Apply Inter font family to the entire application */
 html {
   font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";

nuxt.config.ts

@@ -21,7 +21,9 @@ export default defineNuxtConfig({
       wasm: true
     }
   },
-  css: ['~/assets/css/main.css'],
+  tailwindcss: {
+    cssPath: '~/assets/css/main.css'
+  },
   app: {
     head: {
       link: [