(function() {
  'use strict';

  // Mobile Menu Toggle
  var mobileMenuToggle = document.querySelector('.mobile-menu-toggle');
  var mobileMenu = document.getElementById('mobile-menu');

  if (mobileMenuToggle && mobileMenu) {
    mobileMenuToggle.addEventListener('click', function() {
      var isExpanded = this.getAttribute('aria-expanded') === 'true';
      this.setAttribute('aria-expanded', !isExpanded);
      mobileMenu.hidden = isExpanded;
      
      // Animate hamburger
      var lines = this.querySelectorAll('.hamburger-line');
      if (!isExpanded) {
        lines[0].style.transform = 'rotate(45deg) translate(5px, 5px)';
        lines[1].style.opacity = '0';
        lines[2].style.transform = 'rotate(-45deg) translate(5px, -5px)';
      } else {
        lines[0].style.transform = '';
        lines[1].style.opacity = '';
        lines[2].style.transform = '';
      }
    });

    // Close menu when clicking a link
    mobileMenu.querySelectorAll('a').forEach(function(link) {
      link.addEventListener('click', function() {
        mobileMenuToggle.setAttribute('aria-expanded', 'false');
        mobileMenu.hidden = true;
        var lines = mobileMenuToggle.querySelectorAll('.hamburger-line');
        lines[0].style.transform = '';
        lines[1].style.opacity = '';
        lines[2].style.transform = '';
      });
    });
  }

  // Scroll Reveal
  var revealElements = document.querySelectorAll('.service-card, .benefit-item, .stat-card, .section-header');
  
  if ('IntersectionObserver' in window) {
    var revealObserver = new IntersectionObserver(function(entries) {
      entries.forEach(function(entry) {
        if (entry.isIntersecting) {
          entry.target.classList.add('reveal', 'revealed');
          revealObserver.unobserve(entry.target);
        }
      });
    }, {
      threshold: 0.1,
      rootMargin: '0px 0px -50px 0px'
    });

    revealElements.forEach(function(el, index) {
      el.classList.add('reveal');
      el.style.transitionDelay = Math.min((index % 4) * 0.08, 0.3) + 's';
      revealObserver.observe(el);
    });
  } else {
    revealElements.forEach(function(el) {
      el.classList.add('reveal', 'revealed');
    });
  }

  // Form Validation
  var contactForm = document.getElementById('contact-form');
  var formStatus = document.getElementById('form-status');
  
  if (contactForm) {
    contactForm.addEventListener('submit', function(e) {
      e.preventDefault();
      
      var isValid = true;
      var formGroups = this.querySelectorAll('.form-group');
      
      formGroups.forEach(function(group) {
        group.classList.remove('has-error');
      });

      // Validate name
      var nameInput = this.querySelector('#name');
      if (nameInput && nameInput.value.trim().length < 2) {
        nameInput.closest('.form-group').classList.add('has-error');
        isValid = false;
      }

      // Validate phone
      var phoneInput = this.querySelector('#phone');
      var phoneRegex = /^[\d\-+\s()]{9,}$/;
      if (phoneInput && !phoneRegex.test(phoneInput.value.trim())) {
        phoneInput.closest('.form-group').classList.add('has-error');
        isValid = false;
      }

      // Validate service selection
      var serviceSelect = this.querySelector('#service');
      if (serviceSelect && !serviceSelect.value) {
        serviceSelect.closest('.form-group').classList.add('has-error');
        isValid = false;
      }

      if (isValid) {
        // Announce to screen readers
        if (formStatus) {
          formStatus.textContent = 'הבקשה נשלחה בהצלחה. ניצור איתכם קשר בהקדם.';
        }
        
        // Show success message
        contactForm.innerHTML = 
          '<div class="form-success">' +
            '<svg class="form-success-icon" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" aria-hidden="true">' +
              '<circle cx="12" cy="12" r="10"/>' +
              '<path d="M8 12l3 3 5-6"/>' +
            '</svg>' +
            '<h3>הבקשה נשלחה בהצלחה!</h3>' +
            '<p>ניצור איתכם קשר בהקדם האפשרי</p>' +
          '</div>';
      }
    });

    // Real-time validation feedback
    var inputs = contactForm.querySelectorAll('.form-input');
    inputs.forEach(function(input) {
      input.addEventListener('blur', function() {
        var group = this.closest('.form-group');
        if (this.required && !this.value.trim()) {
          group.classList.add('has-error');
        } else {
          group.classList.remove('has-error');
        }
      });

      input.addEventListener('input', function() {
        this.closest('.form-group').classList.remove('has-error');
      });
    });
  }

  // Smooth scroll for anchor links
  document.querySelectorAll('a[href^="#"]').forEach(function(anchor) {
    anchor.addEventListener('click', function(e) {
      var targetId = this.getAttribute('href');
      if (targetId === '#') return;
      
      var target = document.querySelector(targetId);
      if (target) {
        e.preventDefault();
        var headerOffset = 80;
        var elementPosition = target.getBoundingClientRect().top;
        var offsetPosition = elementPosition + window.pageYOffset - headerOffset;

        window.scrollTo({
          top: offsetPosition,
          behavior: 'smooth'
        });
      }
    });
  });

  // Header background on scroll
  var header = document.querySelector('.site-header');
  if (header) {
    window.addEventListener('scroll', function() {
      var currentScroll = window.pageYOffset;
      
      if (currentScroll > 100) {
        header.style.background = 'rgba(10, 22, 40, 0.98)';
      } else {
        header.style.background = 'rgba(10, 22, 40, 0.9)';
      }
    }, { passive: true });
  }
})();