(function () {
'use strict';
document.addEventListener('submit', function (event) {
var form = event.target;
if (!(form instanceof HTMLFormElement)) return;
var message = form.getAttribute('data-confirm');
if (message && !window.confirm(message)) {
event.preventDefault();
}
});
var btn = document.querySelector('.rio-theme-toggle');
var icon = btn && btn.querySelector('[data-theme-icon]');
function render() {
var t = document.documentElement.getAttribute('data-theme');
if (icon) icon.textContent = t === 'dark' ? '☼' : '☾';
}
render();
if (btn) {
btn.addEventListener('click', function () {
var current = document.documentElement.getAttribute('data-theme');
var next = current === 'dark' ? 'light' : 'dark';
document.documentElement.setAttribute('data-theme', next);
try { localStorage.setItem('rio-theme', next); } catch (_) {}
render();
});
}
})();