.result-updated{animation:resultPulse .6s ease}.highlight{animation:highlightPulse .8s ease}.calculating{opacity:.7;pointer-events:none}.calculating button::after{content:"";display:inline-block;width:20px;height:20px;margin-left:10px;border:2px solid transparent;border-top-color:#fff;border-radius:50%;animation:spin 1s linear infinite}