(function() {
  'use strict';

  // Respect reduced motion preference
  const prefersReducedMotion = window.matchMedia('(prefers-reduced-motion: reduce)').matches;

  // Mobile menu toggle
  const menuToggle = document.querySelector('.menu-toggle');
  const mainNav = document.querySelector('.main-nav');
  const navOverlay = document.querySelector('.nav-overlay');

  function closeMenu() {
    menuToggle.setAttribute('aria-expanded', 'false');
    menuToggle.classList.remove('active');
    mainNav.classList.remove('active');
    navOverlay.classList.remove('active');
    document.body.style.overflow = '';
  }

  function openMenu() {
    menuToggle.setAttribute('aria-expanded', 'true');
    menuToggle.classList.add('active');
    mainNav.classList.add('active');
    navOverlay.classList.add('active');
    document.body.style.overflow = 'hidden';
  }

  if (menuToggle && mainNav && navOverlay) {
    menuToggle.addEventListener('click', function() {
      const isExpanded = this.getAttribute('aria-expanded') === 'true';
      if (isExpanded) {
        closeMenu();
      } else {
        openMenu();
      }
    });

    // Close menu when clicking on a link
    mainNav.querySelectorAll('a').forEach(link => {
      link.addEventListener('click', closeMenu);
    });

    // Close menu when clicking overlay
    navOverlay.addEventListener('click', closeMenu);

    // Close menu on escape key
    document.addEventListener('keydown', function(e) {
      if (e.key === 'Escape' && mainNav.classList.contains('active')) {
        closeMenu();
        menuToggle.focus();
      }
    });
  }

  // Reveal on scroll with IntersectionObserver
  if (!prefersReducedMotion) {
    const revealElements = document.querySelectorAll('.reveal');
    let revealDelay = 0;
    
    const revealObserver = new IntersectionObserver((entries) => {
      entries.forEach((entry) => {
        if (entry.isIntersecting) {
          setTimeout(() => {
            entry.target.classList.add('visible');
          }, revealDelay);
          revealDelay += 80;
          setTimeout(() => { revealDelay = 0; }, 500);
          revealObserver.unobserve(entry.target);
        }
      });
    }, {
      threshold: 0.1,
      rootMargin: '0px 0px -50px 0px'
    });

    revealElements.forEach(el => revealObserver.observe(el));
  } else {
    // If reduced motion is preferred, show all elements immediately
    document.querySelectorAll('.reveal').forEach(el => {
      el.classList.add('visible');
    });
  }

  // Header scroll effect
  const header = document.querySelector('.site-header');

  window.addEventListener('scroll', function() {
    const currentScroll = window.pageYOffset;
    
    if (currentScroll > 100) {
      header.style.boxShadow = '0 4px 20px rgba(44, 24, 16, 0.1)';
    } else {
      header.style.boxShadow = 'none';
    }
  }, { passive: true });

  // Smooth scroll for anchor links
  document.querySelectorAll('a[href^="#"]').forEach(anchor => {
    anchor.addEventListener('click', function(e) {
      const href = this.getAttribute('href');
      if (href === '#') return;
      
      const target = document.querySelector(href);
      if (target) {
        e.preventDefault();
        const headerHeight = header.offsetHeight;
        const targetPosition = target.getBoundingClientRect().top + window.pageYOffset - headerHeight - 20;
        
        window.scrollTo({
          top: targetPosition,
          behavior: prefersReducedMotion ? 'auto' : 'smooth'
        });
        
        // Set focus to the target for accessibility
        target.setAttribute('tabindex', '-1');
        target.focus({ preventScroll: true });
      }
    });
  });

  // Popup functionality
  const popupOverlay = document.getElementById('popupOverlay');
  const popupClose = document.getElementById('popupClose');
  const floatingCta = document.getElementById('floatingCta');
  let popupShown = false;

  function openPopup() {
    popupOverlay.classList.add('active');
    popupOverlay.setAttribute('aria-hidden', 'false');
    document.body.style.overflow = 'hidden';
    
    // Focus the close button for accessibility
    setTimeout(() => {
      popupClose.focus();
    }, 100);
  }

  function closePopup() {
    popupOverlay.classList.remove('active');
    popupOverlay.setAttribute('aria-hidden', 'true');
    document.body.style.overflow = '';
    
    // Return focus to floating button
    floatingCta.focus();
  }

  // Auto-open popup after 5 seconds
  setTimeout(() => {
    if (!popupShown) {
      popupShown = true;
      openPopup();
    }
  }, 5000);

  // Floating CTA click
  if (floatingCta) {
    floatingCta.addEventListener('click', openPopup);
  }

  // Close popup
  if (popupClose) {
    popupClose.addEventListener('click', closePopup);
  }

  // Close on overlay click
  if (popupOverlay) {
    popupOverlay.addEventListener('click', function(e) {
      if (e.target === popupOverlay) {
        closePopup();
      }
    });
  }

  // Close on escape key
  document.addEventListener('keydown', function(e) {
    if (e.key === 'Escape' && popupOverlay.classList.contains('active')) {
      closePopup();
    }
  });

  // Trap focus within popup when open
  if (popupOverlay) {
    const focusableElements = popupOverlay.querySelectorAll(
      'button, [href], input, select, textarea, [tabindex]:not([tabindex="-1"])'
    );
    const firstFocusable = focusableElements[0];
    const lastFocusable = focusableElements[focusableElements.length - 1];

    popupOverlay.addEventListener('keydown', function(e) {
      if (e.key !== 'Tab') return;

      if (e.shiftKey) {
        if (document.activeElement === firstFocusable) {
          lastFocusable.focus();
          e.preventDefault();
        }
      } else {
        if (document.activeElement === lastFocusable) {
          firstFocusable.focus();
          e.preventDefault();
        }
      }
    });
  }

})();