(function() {
  'use strict';

  // Mobile menu toggle
  const mobileMenuBtn = document.querySelector('.mobile-menu-btn');
  const mobileNav = document.getElementById('mobileNav');

  if (mobileMenuBtn && mobileNav) {
    mobileMenuBtn.addEventListener('click', function() {
      mobileNav.classList.toggle('active');
      const isOpen = mobileNav.classList.contains('active');
      mobileMenuBtn.setAttribute('aria-expanded', isOpen);
    });

    // Close menu when clicking a link
    mobileNav.querySelectorAll('a').forEach(function(link) {
      link.addEventListener('click', function() {
        mobileNav.classList.remove('active');
        mobileMenuBtn.setAttribute('aria-expanded', 'false');
      });
    });
  }

  // Scroll reveal animation
  function initScrollReveal() {
    if (window.matchMedia('(prefers-reduced-motion: reduce)').matches) {
      // If user prefers reduced motion, make all elements visible immediately
      document.querySelectorAll('.situation-card, .guide-link, .learn-card, .uni-logo-item').forEach(function(el) {
        el.classList.add('visible');
      });
      return;
    }

    const observerOptions = {
      root: null,
      rootMargin: '0px 0px -50px 0px',
      threshold: 0.1
    };

    const observer = new IntersectionObserver(function(entries) {
      entries.forEach(function(entry, index) {
        if (entry.isIntersecting) {
          // Stagger the animation
          setTimeout(function() {
            entry.target.classList.add('visible');
          }, index * 50);
          observer.unobserve(entry.target);
        }
      });
    }, observerOptions);

    document.querySelectorAll('.situation-card, .guide-link, .learn-card, .uni-logo-item').forEach(function(el) {
      observer.observe(el);
    });
  }

  // Header scroll effect
  function initHeaderScroll() {
    const header = document.querySelector('.header');
    let lastScroll = 0;

    window.addEventListener('scroll', function() {
      const currentScroll = window.pageYOffset;
      
      if (currentScroll > 100) {
        header.style.boxShadow = '0 2px 10px rgba(0,0,0,0.1)';
      } else {
        header.style.boxShadow = 'none';
      }

      lastScroll = currentScroll;
    }, { passive: true });
  }

  // Smooth scroll for anchor links
  function initSmoothScroll() {
    document.querySelectorAll('a[href^="#"]').forEach(function(anchor) {
      anchor.addEventListener('click', function(e) {
        const targetId = this.getAttribute('href');
        if (targetId === '#') return;
        
        const targetElement = document.querySelector(targetId);
        if (targetElement) {
          e.preventDefault();
          const headerHeight = document.querySelector('.header').offsetHeight;
          const targetPosition = targetElement.getBoundingClientRect().top + window.pageYOffset - headerHeight - 20;
          
          window.scrollTo({
            top: targetPosition,
            behavior: 'smooth'
          });
        }
      });
    });
  }

  // Form handling
  function initForm() {
    const form = document.querySelector('.contact-form form');
    if (form) {
      form.addEventListener('submit', function(e) {
        e.preventDefault();
        
        const nameInput = form.querySelector('input[type="text"]');
        const phoneInput = form.querySelector('input[type="tel"]');
        const submitBtn = form.querySelector('button[type="submit"]');
        
        if (nameInput.value.trim() && phoneInput.value.trim()) {
          submitBtn.textContent = 'תודה! ניצור קשר בקרוב';
          submitBtn.disabled = true;
          submitBtn.style.background = 'var(--ez-green)';
          
          // Reset after 3 seconds
          setTimeout(function() {
            submitBtn.textContent = 'שלחו לי פרטים';
            submitBtn.disabled = false;
            submitBtn.style.background = '';
            form.reset();
          }, 3000);
        }
      });
    }
  }

  // University logo hover effect
  function initLogoHover() {
    document.querySelectorAll('.uni-logo-item').forEach(function(logo) {
      logo.addEventListener('click', function() {
        // Placeholder for modal or link functionality
        console.log('Logo clicked:', this.getAttribute('title'));
      });
    });
  }

  // Initialize all functions when DOM is ready
  document.addEventListener('DOMContentLoaded', function() {
    initScrollReveal();
    initHeaderScroll();
    initSmoothScroll();
    initForm();
    initLogoHover();
  });

})();