const motionToggle = document.getElementById('motion-toggle');
const reducedMotion = window.matchMedia('(prefers-reduced-motion: reduce)');

function setMotionPaused(isPaused) {
    document.documentElement.classList.toggle('motion-running', !isPaused);
    motionToggle.setAttribute('aria-pressed', String(isPaused));
    motionToggle.textContent = isPaused ? 'Запустить механизмы' : 'Остановить механизмы';
}

setMotionPaused(reducedMotion.matches);
motionToggle.hidden = false;
motionToggle.addEventListener('click', () => {
    setMotionPaused(document.documentElement.classList.contains('motion-running'));
});
reducedMotion.addEventListener('change', event => setMotionPaused(event.matches));