@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .5s ease-in-out}.slide-up{animation:slideUp .5s ease-in-out}.progress-bar{height:4px;background:linear-gradient(90deg,#667eea 0,#667eea var(--progress),#e5e7eb var(--progress),#e5e7eb 100%);transition:all .3s ease}.calculator-input:focus{box-shadow:0 0 0 3px rgba(102,126,234,.1)}.gradient-bg,.gradient-text{background:linear-gradient(135deg,#667eea,#764ba2)}.gradient-text{-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.whatsapp-mockup{background:#efeae2}.message-sent{background:#dcf8c6;margin-left:20%}.message-received{background:#fff;margin-right:20%}