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

    // Smooth scroll for anchor links
    document.querySelectorAll('a.smooth-scroll[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' });
            }
        });
    });

    // Pricing Toggle
    const pricingToggle = document.getElementById('pricingToggle');
    if(pricingToggle) {
        pricingToggle.addEventListener('change', function () {
            const isYearly = this.checked;
            document.querySelectorAll('.price-monthly').forEach(p => p.style.display = isYearly ? 'none' : 'block');
            document.querySelectorAll('.price-yearly').forEach(p => p.style.display = isYearly ? 'block' : 'none');
        });
    }

    // Lead Form Validation
    const leadForm = document.getElementById('leadForm');
    if (leadForm) {
        leadForm.addEventListener('submit', function (e) {
            let isValid = true;
            const name = document.getElementById('name');
            const email = document.getElementById('email');
            const message = document.getElementById('message');

            // Reset validation
            [name, email, message].forEach(el => {
                el.classList.remove('is-invalid');
            });

            if (name.value.trim() === '') {
                name.classList.add('is-invalid');
                isValid = false;
            }
            if (email.value.trim() === '' || !/^[\w-\.]+@([\w-]+\.)+[\w-]{2,4}$/.test(email.value)) {
                email.classList.add('is-invalid');
                isValid = false;
            }
            if (message.value.trim() === '') {
                message.classList.add('is-invalid');
                isValid = false;
            }

            if (!isValid) {
                e.preventDefault();
            }
        });
    }
});