.error-messages{background-color:#ffebee;border-left:4px solid #f44336;padding:1em;margin-bottom:1.5em;border-radius:4px}.error-messages ul{list-style:none;margin:0;padding-left:1.5em}.error-messages li{color:#d32f2f}input.error,textarea.error{border-color:#f44336 !important;background-color:rgba(244,67,54,0.05) !important}@keyframes shake{0,100%{transform:translateX(0)}10%,30%,50%,70%,90%{transform:translateX(-5px)}20%,40%,60%,80%{transform:translateX(5px)}}.error-messages{animation:shake .6s ease-in-out}