const themeToggleButton = document.getElementById('themeToggle');

function applyTheme(themeName) {
    document.documentElement.setAttribute('data-theme', themeName);
    themeToggleButton.classList.toggle('is-dark', themeName === 'dark');
}

themeToggleButton.addEventListener('click', function () {
    const current = document.documentElement.getAttribute('data-theme');
    const next = current === 'dark' ? 'light' : 'dark';
    localStorage.setItem('techmarket-theme', next);
    applyTheme(next);
});

applyTheme(document.documentElement.getAttribute('data-theme'));