// Matrix animation
function initMatrix() {
    const canvas = document.getElementById('matrixCanvas');
    if (!canvas) return;

    const ctx = canvas.getContext('2d');
    canvas.width = canvas.offsetWidth;
    canvas.height = canvas.offsetHeight;

    const katakana = 'アァカサタナハマヤャラワガザダバパイィキシチニヒミリヰギジヂビピウゥクスツヌフムユュルグズブヅプエェケセテネヘメレヱゲゼデベペオォコソトノホモヨョロヲゴゾドボポヴッン';
    const latin = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
    const nums = '0123456789';
    const symbols = '!"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~';
    const alphabet = katakana + latin + nums + symbols;

    const fontSize = 16;
    const columns = canvas.width / fontSize;
    const drops = [];
    for (let i = 0; i < columns; i++) {
        drops[i] = 1;
    }

    function draw() {
        ctx.fillStyle = 'rgba(0, 0, 0, 0.05)';
        ctx.fillRect(0, 0, canvas.width, canvas.height);
        
        ctx.fillStyle = '#0ff';
        ctx.font = fontSize + 'px monospace';
        
        for (let i = 0; i < drops.length; i++) {
            const text = alphabet.charAt(Math.floor(Math.random() * alphabet.length));
            ctx.fillText(text, i * fontSize, drops[i] * fontSize);
            
            if (drops[i] * fontSize > canvas.height && Math.random() > 0.975) {
                drops[i] = 0;
            }
            drops[i]++;
        }
    }

    setInterval(draw, 33);
}

document.addEventListener('DOMContentLoaded', function() {
    initMatrix();
// 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 (if needed)
    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 dark mode preference
    if (localStorage.getItem('darkMode') === 'true' || 
        (!localStorage.getItem('darkMode') && window.matchMedia('(prefers-color-scheme: dark)').matches)) {
        document.documentElement.classList.add('dark');
    } else {
        document.documentElement.classList.remove('dark');
    }
});