let result = [];
document.addEventListener('click', function(e) {
if (!e.target.classList.contains('dance-cell')) return;
let value = e.target.innerText;
e.target.classList.toggle('active');
if (result.includes(value)) {
result = result.filter(v => v !== value);
} else {
result.push(value);
}
document.getElementById('dance-result').value = result.join(', ');
});
