// 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'
        });
    });
});

// Dark mode toggle functionality
const darkModeToggle = document.getElementById('darkModeToggle');
if (darkModeToggle) {
    darkModeToggle.addEventListener('click', () => {
        document.documentElement.classList.toggle('dark');
        localStorage.setItem('darkMode', document.documentElement.classList.contains('dark'));
    });

    // Check for saved user preference
    if (localStorage.getItem('darkMode') === 'true') {
        document.documentElement.classList.add('dark');
    }
}
// Register custom elements and initialize components
document.addEventListener('DOMContentLoaded', function() {
    // Initialize Chart.js tooltips
    Chart.defaults.plugins.tooltip.backgroundColor = 'rgba(0, 0, 0, 0.8)';
    Chart.defaults.plugins.tooltip.bodyFont = { family: "'Inter', sans-serif", size: 12 };
    Chart.defaults.plugins.tooltip.titleFont = { family: "'Inter', sans-serif", size: 14, weight: 'bold' };
    Chart.defaults.plugins.tooltip.padding = 10;
    Chart.defaults.plugins.tooltip.cornerRadius = 4;
    Chart.defaults.plugins.tooltip.displayColors = true;
    Chart.defaults.plugins.tooltip.usePointStyle = true;
    Chart.defaults.plugins.tooltip.mode = 'nearest';
    Chart.defaults.plugins.tooltip.intersect = false;

const tooltipTriggers = document.querySelectorAll('[data-tooltip]');
    
    tooltipTriggers.forEach(trigger => {
        const tooltip = document.createElement('div');
        tooltip.className = 'tooltip hidden absolute z-10 bg-gray-800 text-white text-xs rounded py-1 px-2';
        tooltip.textContent = trigger.getAttribute('data-tooltip');
        document.body.appendChild(tooltip);
        
        trigger.addEventListener('mouseenter', (e) => {
            const rect = trigger.getBoundingClientRect();
            tooltip.style.left = `${rect.left + rect.width / 2 - tooltip.offsetWidth / 2}px`;
            tooltip.style.top = `${rect.top - tooltip.offsetHeight - 5}px`;
            tooltip.classList.remove('hidden');
        });
        
        trigger.addEventListener('mouseleave', () => {
            tooltip.classList.add('hidden');
        });
    });
});