*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{min-height:100vh}.chat-container{display:flex;flex-direction:column;height:calc(100vh - 200px);min-height:400px}.chat-messages{flex:1;overflow-y:auto;padding:16px;background:#f5f5f5;border-radius:8px}.chat-message{margin-bottom:16px;display:flex}.chat-message.user{justify-content:flex-end}.chat-message.assistant{justify-content:flex-start}.message-bubble{max-width:70%;padding:12px 16px;border-radius:12px;white-space:pre-wrap}.user .message-bubble{background:#1890ff;color:#fff}.assistant .message-bubble{background:#fff;border:1px solid #e8e8e8}.chat-input{margin-top:16px;display:flex;gap:8px}.chat-input .ant-input{flex:1}