(function() {
  'use strict';

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

  // Navigation scroll effect
  const nav = document.querySelector('.nav');

  function handleScroll() {
    if (window.scrollY > 40) {
      nav.classList.add('scrolled');
    } else {
      nav.classList.remove('scrolled');
    }
  }

  window.addEventListener('scroll', handleScroll, { passive: true });
  handleScroll();

  // Mobile menu toggle
  const mobileMenuBtn = document.querySelector('.mobile-menu-btn');
  const mobileMenu = document.querySelector('.mobile-menu');
  const mobileLinks = document.querySelectorAll('.mobile-link');

  if (mobileMenuBtn && mobileMenu) {
    mobileMenuBtn.addEventListener('click', function() {
      const isExpanded = this.getAttribute('aria-expanded') === 'true';
      this.setAttribute('aria-expanded', String(!isExpanded));
      mobileMenu.setAttribute('aria-hidden', String(isExpanded));
    });

    mobileLinks.forEach(function(link) {
      link.addEventListener('click', function() {
        mobileMenuBtn.setAttribute('aria-expanded', 'false');
        mobileMenu.setAttribute('aria-hidden', 'true');
      });
    });
  }

  // Scroll reveal
  if (!prefersReducedMotion) {
    const revealElements = document.querySelectorAll('.reveal');

    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 {
    document.querySelectorAll('.reveal').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 targetElement = document.querySelector(targetId);
      if (targetElement) {
        e.preventDefault();

        const navHeight = nav ? nav.offsetHeight : 0;
        const targetPosition = targetElement.getBoundingClientRect().top + window.pageYOffset - navHeight - 16;

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

  // Form handling
  const form = document.getElementById('contact-form');
  const formSuccess = document.querySelector('.form-success');

  if (form) {
    const nameInput = document.getElementById('name');
    const contactInput = document.getElementById('contact');
    const nameError = nameInput.parentElement.querySelector('.form-error');
    const contactError = contactInput.parentElement.querySelector('.form-error');

    function validateField(input, errorEl, message) {
      if (!input.value.trim()) {
        input.classList.add('error');
        errorEl.textContent = message;
        return false;
      }
      input.classList.remove('error');
      errorEl.textContent = '';
      return true;
    }

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

      const nameValid = validateField(nameInput, nameError, 'נא להזין שם');
      const contactValid = validateField(contactInput, contactError, 'נא להזין אימייל או טלפון');

      if (!nameValid || !contactValid) {
        return;
      }

      const submitBtn = form.querySelector('button[type="submit"]');
      submitBtn.disabled = true;
      submitBtn.innerHTML = '<span>שולח...</span>';

      // Simulate submission
      setTimeout(function() {
        form.querySelectorAll('.form-group, .form-row, button[type="submit"]').forEach(function(el) {
          el.style.display = 'none';
        });

        formSuccess.hidden = false;

        console.log('Form submitted:', {
          name: nameInput.value.trim(),
          contact: contactInput.value.trim(),
          business: document.getElementById('business').value.trim()
        });
      }, 800);
    });

    // Clear errors on input
    [nameInput, contactInput].forEach(function(input) {
      input.addEventListener('input', function() {
        if (this.classList.contains('error')) {
          this.classList.remove('error');
          this.parentElement.querySelector('.form-error').textContent = '';
        }
      });
    });
  }

  // Demo: Approval buttons
  const approveBtn = document.querySelector('.approve-btn');
  const rejectBtn = document.querySelector('.reject-btn');
  const approvalCard = document.querySelector('.approval-card');

  if (approveBtn && approvalCard) {
    approveBtn.addEventListener('click', function() {
      const textSpan = this.querySelector('.approve-btn-text');
      if (textSpan) {
        textSpan.textContent = 'בוצע!';
      }
      this.classList.add('approved');
      approvalCard.style.borderColor = '#10b981';

      setTimeout(function() {
        if (textSpan) {
          textSpan.textContent = 'אשר ובצע';
        }
        approveBtn.classList.remove('approved');
        approvalCard.style.borderColor = '';
      }, 2000);
    });
  }

  if (rejectBtn && approvalCard) {
    rejectBtn.addEventListener('click', function() {
      const textSpan = this.querySelector('.reject-btn-text');
      const originalText = textSpan ? textSpan.textContent : 'דחה';
      
      approvalCard.style.opacity = '0.5';
      this.classList.add('rejected');
      if (textSpan) {
        textSpan.textContent = 'נדחה';
      }

      setTimeout(function() {
        approvalCard.style.opacity = '';
        rejectBtn.classList.remove('rejected');
        if (textSpan) {
          textSpan.textContent = originalText;
        }
      }, 2000);
    });
  }

  // Keyboard: close mobile menu on Escape
  document.addEventListener('keydown', function(e) {
    if (e.key === 'Escape' && mobileMenuBtn && mobileMenu) {
      mobileMenuBtn.setAttribute('aria-expanded', 'false');
      mobileMenu.setAttribute('aria-hidden', 'true');
    }
  });

  // Mouse vs keyboard focus
  document.addEventListener('mousedown', function() {
    document.body.classList.add('using-mouse');
  });

  document.addEventListener('keydown', function(e) {
    if (e.key === 'Tab') {
      document.body.classList.remove('using-mouse');
    }
  });

  // Dynamic year
  const yearSpan = document.getElementById('year');
  if (yearSpan) {
    yearSpan.textContent = new Date().getFullYear();
  }

})();