(function() {
  'use strict';

  // Mobile navigation toggle
  const navToggle = document.querySelector('.nav-toggle');
  const navLinks = document.querySelector('.nav-links');

  if (navToggle && navLinks) {
    navToggle.addEventListener('click', function() {
      const isActive = navLinks.classList.toggle('active');
      navToggle.classList.toggle('active');
      navToggle.setAttribute('aria-expanded', isActive);
      
      // Trap focus in mobile menu when open
      if (isActive) {
        navLinks.querySelector('a').focus();
      }
    });

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

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

  // Scroll reveal animation
  const revealElements = document.querySelectorAll('.reveal');
  
  if (revealElements.length > 0 && 'IntersectionObserver' in window) {
    const prefersReducedMotion = window.matchMedia('(prefers-reduced-motion: reduce)').matches;
    
    if (prefersReducedMotion) {
      revealElements.forEach(function(el) {
        el.classList.add('visible');
      });
    } else {
      const revealObserver = new IntersectionObserver(function(entries) {
        entries.forEach(function(entry) {
          if (entry.isIntersecting) {
            entry.target.classList.add('visible');
            revealObserver.unobserve(entry.target);
          }
        });
      }, {
        threshold: 0.15,
        rootMargin: '0px 0px -40px 0px'
      });

      revealElements.forEach(function(el) {
        revealObserver.observe(el);
      });
    }
  } else {
    revealElements.forEach(function(el) {
      el.classList.add('visible');
    });
  }

  // Smooth scroll for anchor links
  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 header = document.querySelector('.site-header');
        const headerHeight = header ? header.offsetHeight : 0;
        const targetPosition = target.getBoundingClientRect().top + window.pageYOffset - headerHeight - 20;
        
        window.scrollTo({
          top: targetPosition,
          behavior: 'smooth'
        });
        
        // Set focus for accessibility
        target.setAttribute('tabindex', '-1');
        target.focus({ preventScroll: true });
      }
    });
  });

  // Form handling (demo only)
  const contactForm = document.getElementById('contact-form');
  
  if (contactForm) {
    contactForm.addEventListener('submit', function(e) {
      e.preventDefault();
      
      const submitBtn = this.querySelector('button[type="submit"]');
      const originalText = submitBtn.textContent;
      
      // Basic validation
      const name = this.querySelector('#name');
      const phone = this.querySelector('#phone');
      
      if (!name.value.trim() || !phone.value.trim()) {
        return;
      }
      
      submitBtn.textContent = 'שולח...';
      submitBtn.disabled = true;
      
      // Simulate submission
      setTimeout(function() {
        submitBtn.textContent = 'נשלח בהצלחה ✓';
        submitBtn.style.background = '#4a7c59';
        
        setTimeout(function() {
          submitBtn.textContent = originalText;
          submitBtn.style.background = '';
          submitBtn.disabled = false;
          contactForm.reset();
        }, 2500);
      }, 800);
    });
  }

  // Header shadow on scroll
  const header = document.querySelector('.site-header');
  
  if (header) {
    let ticking = false;
    
    window.addEventListener('scroll', function() {
      if (!ticking) {
        window.requestAnimationFrame(function() {
          if (window.pageYOffset > 50) {
            header.style.boxShadow = '0 2px 20px rgba(0,0,0,0.08)';
          } else {
            header.style.boxShadow = 'none';
          }
          ticking = false;
        });
        ticking = true;
      }
    }, { passive: true });
  }

})();