(function() {
  'use strict';

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

  function handleNavScroll() {
    if (window.scrollY > 50) {
      nav.classList.add('nav--scrolled');
    } else {
      nav.classList.remove('nav--scrolled');
    }
  }

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

  // Mobile menu toggle
  const navToggle = document.querySelector('.nav__toggle');
  const navMenu = document.querySelector('.nav__menu');

  if (navToggle && navMenu) {
    navToggle.addEventListener('click', function() {
      const isExpanded = this.getAttribute('aria-expanded') === 'true';
      this.setAttribute('aria-expanded', !isExpanded);
      navMenu.classList.toggle('nav__menu--open');
    });

    navMenu.querySelectorAll('a').forEach(link => {
      link.addEventListener('click', function() {
        navToggle.setAttribute('aria-expanded', 'false');
        navMenu.classList.remove('nav__menu--open');
      });
    });

    document.addEventListener('keydown', function(e) {
      if (e.key === 'Escape' && navMenu.classList.contains('nav__menu--open')) {
        navToggle.setAttribute('aria-expanded', 'false');
        navMenu.classList.remove('nav__menu--open');
        navToggle.focus();
      }
    });
  }

  // Scroll reveal animation
  const revealElements = document.querySelectorAll('.reveal');
  const prefersReducedMotion = window.matchMedia('(prefers-reduced-motion: reduce)');

  if (prefersReducedMotion.matches) {
    revealElements.forEach(el => {
      el.classList.add('reveal--visible');
    });
  } else if ('IntersectionObserver' in window) {
    const revealObserver = new IntersectionObserver(
      (entries) => {
        entries.forEach((entry) => {
          if (entry.isIntersecting) {
            entry.target.classList.add('reveal--visible');
            revealObserver.unobserve(entry.target);
          }
        });
      },
      {
        threshold: 0.1,
        rootMargin: '0px 0px -40px 0px'
      }
    );

    revealElements.forEach(el => {
      revealObserver.observe(el);
    });
  } else {
    revealElements.forEach(el => {
      el.classList.add('reveal--visible');
    });
  }

  // Smooth scroll for anchor links
  document.querySelectorAll('a[href^="#"]').forEach(anchor => {
    anchor.addEventListener('click', function(e) {
      const targetId = this.getAttribute('href');
      
      if (targetId === '#') return;
      
      const target = document.querySelector(targetId);
      
      if (target) {
        e.preventDefault();
        target.scrollIntoView({
          behavior: prefersReducedMotion.matches ? 'auto' : 'smooth',
          block: 'start'
        });
        
        target.setAttribute('tabindex', '-1');
        target.focus({ preventScroll: true });
      }
    });
  });

  // Form validation and submission handling
  const bookingForm = document.querySelector('.booking__form');

  if (bookingForm) {
    const fields = bookingForm.querySelectorAll('input[required], select[required]');
    
    // Real-time validation
    fields.forEach(field => {
      field.addEventListener('blur', function() {
        validateField(this);
      });
      
      field.addEventListener('input', function() {
        if (this.classList.contains('error')) {
          validateField(this);
        }
      });
    });
    
    function validateField(field) {
      const errorEl = field.parentElement.querySelector('.form-error');
      let message = '';
      
      if (!field.value.trim()) {
        message = 'שדה חובה';
      } else if (field.type === 'tel' && !/^[0-9\-\s]{9,14}$/.test(field.value.replace(/\s/g, ''))) {
        message = 'מספר טלפון לא תקין';
      } else if (field.type === 'date') {
        const selectedDate = new Date(field.value);
        const today = new Date();
        today.setHours(0, 0, 0, 0);
        if (selectedDate < today) {
          message = 'יש לבחור תאריך עתידי';
        }
      }
      
      if (message) {
        field.classList.add('error');
        if (errorEl) errorEl.textContent = message;
        return false;
      } else {
        field.classList.remove('error');
        if (errorEl) errorEl.textContent = '';
        return true;
      }
    }
    
    bookingForm.addEventListener('submit', function(e) {
      e.preventDefault();
      
      let isValid = true;
      fields.forEach(field => {
        if (!validateField(field)) {
          isValid = false;
        }
      });
      
      if (!isValid) {
        const firstError = bookingForm.querySelector('.error');
        if (firstError) firstError.focus();
        return;
      }
      
      const submitButton = this.querySelector('.form-submit');
      const originalText = submitButton.textContent;
      
      submitButton.textContent = 'שולח...';
      submitButton.disabled = true;
      
      // Simulate form submission
      setTimeout(() => {
        submitButton.textContent = 'נשלח בהצלחה ✓';
        submitButton.style.background = 'hsl(145, 45%, 40%)';
        
        this.reset();
        
        setTimeout(() => {
          submitButton.textContent = originalText;
          submitButton.style.background = '';
          submitButton.disabled = false;
        }, 3000);
      }, 1200);
    });

    // Set minimum date to today
    const dateInput = document.getElementById('date');
    if (dateInput) {
      const today = new Date();
      const yyyy = today.getFullYear();
      const mm = String(today.getMonth() + 1).padStart(2, '0');
      const dd = String(today.getDate()).padStart(2, '0');
      dateInput.setAttribute('min', `${yyyy}-${mm}-${dd}`);
    }
  }

})();