// Dark mode toggle functionality
document.addEventListener('DOMContentLoaded', function() {
    // Check for saved user preference
    if (localStorage.getItem('darkMode') === 'true') {
        document.documentElement.classList.add('dark');
        updateDarkModeToggle(true);
    }

    // Initialize all tooltips
    const tooltipTriggerList = [].slice.call(document.querySelectorAll('[data-bs-toggle="tooltip"]'));
    tooltipTriggerList.map(function (tooltipTriggerEl) {
        return new bootstrap.Tooltip(tooltipTriggerEl);
    });

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

function toggleDarkMode() {
    const htmlEl = document.documentElement;
    const isDark = htmlEl.classList.contains('dark');
    
    if (isDark) {
        htmlEl.classList.remove('dark');
        localStorage.setItem('darkMode', 'false');
        updateDarkModeToggle(false);
    } else {
        htmlEl.classList.add('dark');
        localStorage.setItem('darkMode', 'true');
        updateDarkModeToggle(true);
    }
}

function updateDarkModeToggle(isDark) {
    const darkModeToggle = document.getElementById('darkModeToggle');
    if (darkModeToggle) {
        darkModeToggle.innerHTML = isDark ? 
            '<i data-feather="sun" class="w-5 h-5"></i>' : 
            '<i data-feather="moon" class="w-5 h-5"></i>';
        feather.replace();
    }
}

// Form validation for contact form
function validateForm() {
    const name = document.getElementById('name').value.trim();
    const email = document.getElementById('email').value.trim();
    const message = document.getElementById('message').value.trim();
    
    if (!name || !email || !message) {
        alert('Veuillez remplir tous les champs obligatoires.');
        return false;
    }
    
    if (!/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(email)) {
        alert('Veuillez entrer une adresse email valide.');
        return false;
    }
    
    return true;
}