// ========================================
// Mobile Navigation Toggle
// ========================================
document.addEventListener('DOMContentLoaded', function() {
    const navToggle = document.querySelector('.nav-toggle');
    const navMenu = document.querySelector('.nav-menu');
    
    if (navToggle) {
        navToggle.addEventListener('click', function() {
            navMenu.classList.toggle('active');
            
            // Animate hamburger icon
            const spans = this.querySelectorAll('span');
            if (navMenu.classList.contains('active')) {
                spans[0].style.transform = 'rotate(45deg) translate(6px, 6px)';
                spans[1].style.opacity = '0';
                spans[2].style.transform = 'rotate(-45deg) translate(6px, -6px)';
            } else {
                spans[0].style.transform = 'none';
                spans[1].style.opacity = '1';
                spans[2].style.transform = 'none';
            }
        });
        
        // Close menu when clicking on a link
        const navLinks = document.querySelectorAll('.nav-menu a');
        navLinks.forEach(link => {
            link.addEventListener('click', () => {
                navMenu.classList.remove('active');
                const spans = navToggle.querySelectorAll('span');
                spans[0].style.transform = 'none';
                spans[1].style.opacity = '1';
                spans[2].style.transform = 'none';
            });
        });
    }
    
    // Initialize theme
    initTheme();
});

// ========================================
// Theme Toggle
// ========================================
function initTheme() {
    // Check for saved theme preference or default to 'dark' mode
    const currentTheme = localStorage.getItem('theme') || 'dark';
    document.documentElement.setAttribute('data-theme', currentTheme);
    updateThemeIcon(currentTheme);
    
    // Add click listener to theme toggle button
    const themeToggle = document.querySelector('.theme-toggle');
    if (themeToggle) {
        themeToggle.addEventListener('click', toggleTheme);
    }
}

function toggleTheme() {
    const currentTheme = document.documentElement.getAttribute('data-theme');
    const newTheme = currentTheme === 'light' ? 'dark' : 'light';
    
    document.documentElement.setAttribute('data-theme', newTheme);
    localStorage.setItem('theme', newTheme);
    updateThemeIcon(newTheme);
}

function updateThemeIcon(theme) {
    const lightIcon = document.querySelector('.theme-toggle .light-icon');
    const darkIcon = document.querySelector('.theme-toggle .dark-icon');
    
    if (lightIcon && darkIcon) {
        if (theme === 'dark') {
            // When dark theme is active, show sun icon (to switch TO light)
            lightIcon.classList.add('active');
            darkIcon.classList.remove('active');
        } else {
            // When light theme is active, show moon icon (to switch TO dark)
            lightIcon.classList.remove('active');
            darkIcon.classList.add('active');
        }
    }
}

// ========================================
// Smooth Scroll
// ========================================
document.querySelectorAll('a[href^="#"]').forEach(anchor => {
    anchor.addEventListener('click', function (e) {
        e.preventDefault();
        const target = document.querySelector(this.getAttribute('href'));
        if (target) {
            target.scrollIntoView({
                behavior: 'smooth',
                block: 'start'
            });
        }
    });
});