diff --git a/index.pug b/index.pug
index 99eeb1d..687d30e 100644
--- a/index.pug
+++ b/index.pug
@@ -225,4 +225,75 @@ html(lang=lang, dir=dir)
 
 			.zen-quote= t.summary.quote
 
-		script(src="src/main.js")
+		script.
+			// JavaScript functions from original HTML
+			const frameworks = ['React', 'Vue.js', 'Angular', 'Svelte', 'Solid', 'Alpine.js', 'Lit', 'Preact', 'Qwik', 'SvelteKit', 'Next.js', 'Nuxt.js'];
+
+			function filterFrameworks(value) {
+				const results = document.getElementById('js-results');
+				if (!value) {
+					results.style.display = 'none';
+					return;
+				}
+				const filtered = frameworks.filter(fw => fw.toLowerCase().includes(value.toLowerCase()));
+				results.innerHTML = filtered.map(fw => `<div style="padding:8px; cursor:pointer;" onclick="selectFramework('${fw}')">${fw}</div>`).join('');
+				results.style.display = filtered.length ? 'block' : 'none';
+			}
+
+			function selectFramework(fw) {
+				document.getElementById('js-search').value = fw;
+				document.getElementById('js-results').style.display = 'none';
+			}
+
+			function startNativeProgress() {
+				const progress = document.getElementById('nativeProgress');
+				const text = document.getElementById('nativeProgressText');
+				let value = 0;
+				const interval = setInterval(() => {
+					value += Math.random() * 15;
+					if (value >= 100) {
+						value = 100;
+						clearInterval(interval);
+					}
+					progress.value = value;
+					text.textContent = Math.round(value) + '%';
+				}, 200);
+			}
+
+			function toggleContent(id) {
+				document.getElementById(id).classList.toggle("active");
+			}
+
+			function openJSModal() {
+				document.getElementById('jsModal').style.display = 'flex';
+			}
+
+			function closeJSModal() {
+				document.getElementById('jsModal').style.display = 'none';
+			}
+
+			function validateJSForm(event) {
+				event.preventDefault();
+				alert('Custom validation would run here');
+				return false;
+			}
+
+			function startJSProgress() {
+				const bar = document.getElementById('jsProgress');
+				const text = document.getElementById('jsProgressText');
+				let width = 0;
+				const interval = setInterval(() => {
+					width += Math.random() * 15;
+					if (width >= 100) {
+						width = 100;
+						clearInterval(interval);
+					}
+					bar.style.width = width + '%';
+					text.textContent = Math.round(width) + '%';
+				}, 200);
+			}
+
+			function openDatePicker() {
+				const picker = document.getElementById('datePicker');
+				picker.style.display = picker.style.display === 'none' ? 'block' : 'none';
+			}