document.addEventListener('DOMContentLoaded', () => {
    const form = document.getElementById('item-form');
    const itemList = document.getElementById('item-list');

    form.addEventListener('submit', (e) => {
        e.preventDefault();
        
        const itemName = document.getElementById('item-name').value;
        const expiryDate = document.getElementById('expiry-date').value;
        
        const li = document.createElement('li');
        li.innerHTML = `${itemName} - 賞味期限: ${expiryDate}`;
        
        // 賞味期限チェック
        const today = new Date();
        const expiry = new Date(expiryDate);
        
        if (expiry < today) {
            li.classList.add('expired');
        }
        
        itemList.appendChild(li);
        
        form.reset();
    });
});