(function() {
  'use strict';

  // Mobile Navigation Toggle
  const navToggle = document.querySelector('.nav-toggle');
  const navMenu = document.querySelector('.nav-menu');

  if (navToggle && navMenu) {
    navToggle.addEventListener('click', function() {
      const isExpanded = navToggle.getAttribute('aria-expanded') === 'true';
      navToggle.setAttribute('aria-expanded', !isExpanded);
      navMenu.classList.toggle('active');
    });

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

    // Close menu on escape key
    document.addEventListener('keydown', function(e) {
      if (e.key === 'Escape' && navMenu.classList.contains('active')) {
        navMenu.classList.remove('active');
        navToggle.setAttribute('aria-expanded', 'false');
        navToggle.focus();
      }
    });
  }

  // Catalog Filtering
  const filterButtons = document.querySelectorAll('.filter-btn');
  const productCards = document.querySelectorAll('.product-card');

  filterButtons.forEach(function(button) {
    button.addEventListener('click', function() {
      const filter = this.dataset.filter;

      // Update active button
      filterButtons.forEach(function(btn) {
        btn.classList.remove('active');
        btn.setAttribute('aria-pressed', 'false');
      });
      this.classList.add('active');
      this.setAttribute('aria-pressed', 'true');

      // Filter products
      productCards.forEach(function(card) {
        if (filter === 'all' || card.dataset.category === filter) {
          card.classList.remove('hidden');
        } else {
          card.classList.add('hidden');
        }
      });
    });
  });

  // Form Handling
  const contactForm = document.getElementById('contactForm');

  if (contactForm) {
    contactForm.addEventListener('submit', function(e) {
      e.preventDefault();

      const formData = new FormData(contactForm);
      const data = {};
      formData.forEach(function(value, key) {
        data[key] = value;
      });

      // Simulate form submission
      const submitBtn = contactForm.querySelector('.btn-submit');
      const originalText = submitBtn.textContent;
      submitBtn.textContent = 'שולח...';
      submitBtn.disabled = true;
      submitBtn.style.opacity = '0.7';

      setTimeout(function() {
        submitBtn.textContent = 'נשלח בהצלחה!';
        submitBtn.style.background = '#38a169';
        submitBtn.style.opacity = '1';
        
        setTimeout(function() {
          contactForm.reset();
          submitBtn.textContent = originalText;
          submitBtn.style.background = '';
          submitBtn.disabled = false;
        }, 2500);
      }, 1200);
    });
  }

  // Scroll Reveal Animation
  const revealElements = document.querySelectorAll('.reveal');
  const prefersReducedMotion = window.matchMedia('(prefers-reduced-motion: reduce)');

  if (prefersReducedMotion.matches) {
    // Immediately show all elements if user prefers reduced motion
    revealElements.forEach(function(el) {
      el.classList.add('visible');
    });
  } else if ('IntersectionObserver' in window) {
    const revealObserver = new IntersectionObserver(function(entries) {
      entries.forEach(function(entry) {
        if (entry.isIntersecting) {
          entry.target.classList.add('visible');
          revealObserver.unobserve(entry.target);
        }
      });
    }, {
      threshold: 0.1,
      rootMargin: '0px 0px -40px 0px'
    });

    revealElements.forEach(function(el) {
      revealObserver.observe(el);
    });
  } else {
    // Fallback for browsers without IntersectionObserver
    revealElements.forEach(function(el) {
      el.classList.add('visible');
    });
  }

  // Smooth scroll offset for fixed header
  document.querySelectorAll('a[href^="#"]').forEach(function(anchor) {
    anchor.addEventListener('click', function(e) {
      const targetId = this.getAttribute('href');
      if (targetId === '#') return;

      const target = document.querySelector(targetId);
      if (target) {
        e.preventDefault();
        const headerOffset = 80;
        const elementPosition = target.getBoundingClientRect().top;
        const offsetPosition = elementPosition + window.pageYOffset - headerOffset;

        if (prefersReducedMotion.matches) {
          window.scrollTo(0, offsetPosition);
        } else {
          window.scrollTo({
            top: offsetPosition,
            behavior: 'smooth'
          });
        }
      }
    });
  });

})();