*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#f5f5f5}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}.chat-container{max-width:800px;margin:0 auto;height:100vh;display:flex;flex-direction:column;background-color:#fff;box-shadow:0 0 10px #0000001a}.chat-header{padding:20px;border-bottom:1px solid #f0f0f0;background-color:#722ed1;color:#fff;text-align:center}.chat-messages{flex:1;padding:20px;overflow-y:auto;display:flex;flex-direction:column;gap:15px}.message{max-width:80%;padding:10px 15px;border-radius:8px;line-height:1.4}.user-message{align-self:flex-end;background-color:#e6f7ff;border-bottom-right-radius:2px}.assistant-message{align-self:flex-start;background-color:#f5f5f5;border-bottom-left-radius:2px}.message-content{word-break:break-word}.chat-input{padding:20px;border-top:1px solid #f0f0f0;display:flex;gap:10px;background-color:#fafafa}.chat-input input{flex:1;padding:10px 15px;border:1px solid #d9d9d9;border-radius:4px;font-size:14px}.chat-input button{padding:0 20px;font-size:14px}