document.addEventListener('DOMContentLoaded', () => {
  "use strict";

  /**
   * Navbar shrink on scroll
   */
  const navbar = document.querySelector('.navbar');
  if (navbar) {
    const handleScroll = () => {
      if (window.scrollY > 50) {
        navbar.classList.add('scrolled');
      } else {
        navbar.classList.remove('scrolled');
      }
    };
    window.addEventListener('scroll', handleScroll);
    handleScroll(); // Initial check
  }

  /**
   * Smooth scroll for anchor links
   */
  document.querySelectorAll('a[href^="#"]').forEach(anchor => {
    anchor.addEventListener('click', function (e) {
      e.preventDefault();
      const targetId = this.getAttribute('href');
      const targetElement = document.querySelector(targetId);
      if(targetElement){
        targetElement.scrollIntoView({
          behavior: 'smooth'
        });
      }
    });
  });

  /**
   * Bootstrap form validation
   */
  const forms = document.querySelectorAll('.needs-validation');
  Array.prototype.slice.call(forms).forEach(function (form) {
    form.addEventListener('submit', function (event) {
      if (!form.checkValidity()) {
        event.preventDefault();
        event.stopPropagation();
      }
      form.classList.add('was-validated');
    }, false);
  });

});