(function() {
  'use strict';

  // ===== Mobile Menu Toggle =====
  const mobileMenuToggle = document.querySelector('.mobile-menu-toggle');
  const mobileNav = document.querySelector('.mobile-nav');
  
  if (mobileMenuToggle && mobileNav) {
    mobileMenuToggle.addEventListener('click', function() {
      const isExpanded = this.getAttribute('aria-expanded') === 'true';
      this.setAttribute('aria-expanded', !isExpanded);
      mobileNav.hidden = isExpanded;
    });

    // Close mobile menu when clicking a link
    mobileNav.querySelectorAll('a').forEach(link => {
      link.addEventListener('click', function() {
        mobileMenuToggle.setAttribute('aria-expanded', 'false');
        mobileNav.hidden = true;
      });
    });

    // Close mobile menu on Escape key
    document.addEventListener('keydown', function(e) {
      if (e.key === 'Escape' && !mobileNav.hidden) {
        mobileMenuToggle.setAttribute('aria-expanded', 'false');
        mobileNav.hidden = true;
        mobileMenuToggle.focus();
      }
    });
  }

  // ===== Reduced Motion Check =====
  const prefersReducedMotion = window.matchMedia('(prefers-reduced-motion: reduce)');

  // ===== Scroll Reveal Animation =====
  const revealElements = document.querySelectorAll('.reveal');
  
  if ('IntersectionObserver' in window && !prefersReducedMotion.matches) {
    const revealObserver = new IntersectionObserver((entries) => {
      entries.forEach(entry => {
        if (entry.isIntersecting) {
          entry.target.classList.add('visible');
          revealObserver.unobserve(entry.target);
        }
      });
    }, {
      threshold: 0.1,
      rootMargin: '0px 0px -50px 0px'
    });

    revealElements.forEach(el => revealObserver.observe(el));
  } else {
    // Fallback for older browsers or reduced motion preference
    revealElements.forEach(el => el.classList.add('visible'));
  }

  // ===== Smooth Scroll for Navigation =====
  document.querySelectorAll('a[href^="#"]').forEach(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('.site-header').offsetHeight;
        const targetPosition = targetElement.getBoundingClientRect().top + window.pageYOffset - headerHeight - 20;
        
        window.scrollTo({
          top: targetPosition,
          behavior: prefersReducedMotion.matches ? 'auto' : 'smooth'
        });

        // Set focus to target for accessibility
        targetElement.setAttribute('tabindex', '-1');
        targetElement.focus({ preventScroll: true });
      }
    });
  });

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

  if (leadForm && formSuccess) {
    leadForm.addEventListener('submit', function(e) {
      e.preventDefault();
      
      // Basic validation
      const inputs = this.querySelectorAll('input[required]');
      let isValid = true;
      
      inputs.forEach(input => {
        input.classList.remove('error');
        if (!input.value.trim()) {
          isValid = false;
          input.classList.add('error');
        }
      });

      // Email validation
      const emailInput = document.getElementById('email');
      if (emailInput && emailInput.value) {
        const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
        if (!emailRegex.test(emailInput.value)) {
          isValid = false;
          emailInput.classList.add('error');
        }
      }

      // Phone validation (basic Israeli format)
      const phoneInput = document.getElementById('phone');
      if (phoneInput && phoneInput.value) {
        const phoneRegex = /^[\d\-\+\s\(\)]{9,}$/;
        if (!phoneRegex.test(phoneInput.value)) {
          isValid = false;
          phoneInput.classList.add('error');
        }
      }

      if (isValid) {
        // Simulate form submission
        const submitBtn = this.querySelector('.btn-submit');
        const originalText = submitBtn.innerHTML;
        submitBtn.disabled = true;
        submitBtn.innerHTML = '<span>שולח...</span>';
        
        setTimeout(() => {
          leadForm.hidden = true;
          formSuccess.hidden = false;
          // Announce to screen readers
          formSuccess.focus();
        }, 1000);
      } else {
        // Focus first error field
        const firstError = this.querySelector('.error');
        if (firstError) {
          firstError.focus();
        }
      }
    });

    // Clear error styling on input
    leadForm.querySelectorAll('input').forEach(input => {
      input.addEventListener('input', function() {
        this.classList.remove('error');
      });
    });
  }

  // ===== Header Background on Scroll =====
  const header = document.querySelector('.site-header');
  let lastScroll = 0;
  let ticking = false;

  function updateHeader() {
    const currentScroll = window.pageYOffset;
    
    if (currentScroll > 50) {
      header.style.boxShadow = 'var(--shadow)';
    } else {
      header.style.boxShadow = 'none';
    }
    
    lastScroll = currentScroll;
    ticking = false;
  }

  window.addEventListener('scroll', function() {
    if (!ticking) {
      requestAnimationFrame(updateHeader);
      ticking = true;
    }
  }, { passive: true });

  // ===== Dashboard Card Animation =====
  if (!prefersReducedMotion.matches) {
    const pendingCard = document.querySelector('.dash-card.pending');
    
    if (pendingCard) {
      let pulseInterval;
      
      const startPulse = () => {
        pendingCard.style.transition = 'box-shadow 0.5s ease';
        let isPulsing = true;
        
        pulseInterval = setInterval(() => {
          if (isPulsing) {
            pendingCard.style.boxShadow = '0 0 0 3px rgba(217, 119, 6, 0.3)';
          } else {
            pendingCard.style.boxShadow = 'none';
          }
          isPulsing = !isPulsing;
        }, 1000);
      };

      // Start pulse animation when hero is visible
      const heroObserver = new IntersectionObserver((entries) => {
        entries.forEach(entry => {
          if (entry.isIntersecting) {
            startPulse();
          } else {
            clearInterval(pulseInterval);
            if (pendingCard) {
              pendingCard.style.boxShadow = 'none';
            }
          }
        });
      });

      const heroSection = document.querySelector('.hero');
      if (heroSection) {
        heroObserver.observe(heroSection);
      }
    }
  }

  // ===== Shield Pulse Animation — only when visible =====
  if (!prefersReducedMotion.matches) {
    const trustVisual = document.querySelector('.trust-visual');
    
    if (trustVisual) {
      const trustObserver = new IntersectionObserver((entries) => {
        entries.forEach(entry => {
          if (entry.isIntersecting) {
            entry.target.classList.add('visible');
          } else {
            entry.target.classList.remove('visible');
          }
        });
      }, { threshold: 0.5 });

      trustObserver.observe(trustVisual);
    }
  }

})();