Adjust hero section positioning and standardize contact information

- Updated hero section CSS to position content lower on the page
- Changed #hero padding-top from 8rem to 4rem with !important flag
- Modified .hero-container to use align-items: flex-start with 10rem top padding
- Added cache-busting parameter to style.css link for browser refresh
- Standardized contact information across all pages:
  - Location: Pune, Maharashtra, India
  - Phone: +91 89491-35299
  - Email: info@gyannetra.com
- Updated footer contact sections in about.html and all service/industry pages
- Fixed CSS syntax error by removing extra closing brace
- Cleaned up unused CSS and JS files for better project organization

js/menu-dropdown.js

@@ -1,6 +1,46 @@
 // Fallback: Enhance dropdowns with fade/slide effect if not handled elsewhere
 // (dropdown.js already handles logic, so this is for extra UI polish)
 document.addEventListener('DOMContentLoaded', function() {
+  // Hamburger menu functionality
+  const hamburgerMenu = document.querySelector('.hamburger-menu');
+  const navLinks = document.querySelector('.nav-links');
+  
+  if (hamburgerMenu && navLinks) {
+    hamburgerMenu.addEventListener('click', function() {
+      hamburgerMenu.classList.toggle('active');
+      navLinks.classList.toggle('active');
+      
+      // Prevent body scrolling when menu is open
+      if (navLinks.classList.contains('active')) {
+        document.body.style.overflow = 'hidden';
+      } else {
+        document.body.style.overflow = '';
+      }
+    });
+    
+    // Close menu when clicking on nav links
+    navLinks.addEventListener('click', function(e) {
+      if (e.target.classList.contains('nav-link') && !e.target.closest('.dropdown')) {
+        hamburgerMenu.classList.remove('active');
+        navLinks.classList.remove('active');
+        document.body.style.overflow = '';
+      }
+    });
+    
+    // Handle dropdown toggles in mobile menu
+    const dropdownToggles = document.querySelectorAll('.dropdown > .nav-link');
+    dropdownToggles.forEach(toggle => {
+      toggle.addEventListener('click', function(e) {
+        if (window.innerWidth <= 768) {
+          e.preventDefault();
+          const dropdownMenu = this.nextElementSibling;
+          dropdownMenu.classList.toggle('show');
+        }
+      });
+    });
+  }
+  
+  // Original dropdown enhancement code
   document.querySelectorAll('.dropdown-menu').forEach(menu => {
     menu.addEventListener('transitionend', function() {
       if (!menu.classList.contains('show')) {