.result-box.show{display:block;animation:slideIn .5s ease}.flip-card.flipped{background:#f39c12;color:#fff}.tracker-item.checked .checkbox{background:#27ae60;border-color:#27ae60}.tracker-item.checked .checkbox::after{content:"✓";color:#fff;font-weight:700;font-size:16px}.tracker-item.checked{opacity:.7;text-decoration:line-through}