*{box-sizing:border-box}:root{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;line-height:1.5;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;padding:0;min-width:320px;min-height:100vh;background-color:#f7f7f8;color:#333}html,body,#root{height:100%;overflow:hidden}.chat-container{display:flex;flex-direction:column;height:100vh;max-width:900px;margin:0 auto;background:#fff}.chat-header{padding:1.5rem;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;text-align:center;box-shadow:0 2px 10px #0000001a}.chat-header h1{margin:0;font-size:1.75rem;font-weight:600}.messages-container{flex:1;overflow-y:auto;padding:1.5rem;background:#f7f7f8}.welcome-message{text-align:center;padding:3rem 1rem;color:#666}.welcome-message h2{color:#333;margin-bottom:.5rem}.message{margin-bottom:1.5rem;animation:fadeIn .3s ease-in}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.message-role{font-size:.875rem;font-weight:600;margin-bottom:.5rem;text-transform:uppercase;letter-spacing:.5px}.message.user .message-role{color:#667eea}.message.assistant .message-role{color:#764ba2}.message-content{background:#fff;padding:1rem 1.25rem;border-radius:12px;line-height:1.6;box-shadow:0 1px 3px #0000001a;white-space:pre-wrap;word-wrap:break-word}.message.user .message-content{background:#667eea;color:#fff;margin-left:2rem}.message.assistant .message-content{background:#fff;color:#333;margin-right:2rem;border:1px solid #e5e5e5}.typing{font-style:italic;color:#999}.input-form{display:flex;gap:.75rem;padding:1.5rem;background:#fff;border-top:1px solid #e5e5e5;box-shadow:0 -2px 10px #0000000d}.message-input{flex:1;padding:.875rem 1.25rem;border:2px solid #e5e5e5;border-radius:24px;font-size:1rem;outline:none;transition:border-color .2s;font-family:inherit}.message-input:focus{border-color:#667eea}.message-input:disabled{background:#f5f5f5;cursor:not-allowed}.send-button{padding:.875rem 2rem;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:24px;font-size:1rem;font-weight:600;cursor:pointer;transition:transform .2s,box-shadow .2s;white-space:nowrap}.send-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.send-button:active:not(:disabled){transform:translateY(0)}.send-button:disabled{opacity:.5;cursor:not-allowed;transform:none}.messages-container::-webkit-scrollbar{width:8px}.messages-container::-webkit-scrollbar-track{background:#f1f1f1}.messages-container::-webkit-scrollbar-thumb{background:#c1c1c1;border-radius:4px}.messages-container::-webkit-scrollbar-thumb:hover{background:#a1a1a1}#root{width:100%;height:100vh;margin:0;padding:0}