*{margin:0;padding:0;box-sizing:border-box}body{font-family:Noto Sans,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-weight:400;background:white;color:#2c3e50;line-height:1.6}#root{height:100vh;display:flex;flex-direction:column}.app{display:flex;height:100vh;width:100vw;max-width:1400px;min-width:1000px;margin:0 auto;background:white;box-shadow:0 0 20px #0000001a}.sidebar{width:300px;min-width:300px;flex-shrink:0;background:white;color:#2c3e50;padding:20px;overflow-y:auto;border-right:1px solid #ecf0f1}.main-chat{flex:1;min-width:700px;display:flex;flex-direction:column}.header{background:white;padding:15px 25px;border-bottom:1px solid #ecf0f1;display:flex;justify-content:between;align-items:center}.header h1{font-size:20px;font-weight:300;color:#2c3e50}.chat-container{flex:1;display:flex;flex-direction:column;overflow:hidden}.messages-area{flex:1;overflow-y:auto;padding:20px;background:white}.message{margin-bottom:16px;display:flex;gap:12px}.message.user{flex-direction:row-reverse}.message-content{max-width:70%;padding:12px 16px;border-radius:8px;font-size:14px;line-height:1.5}.message.user .message-content{background:#3498db;color:#fff;border-bottom-right-radius:4px}.message.assistant .message-content{background:white;border:1px solid #e1e8ed;border-bottom-left-radius:4px}.message-avatar{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:12px;flex-shrink:0}.message.user .message-avatar{background:#2980b9;color:#fff}.message.assistant .message-avatar{background:#95a5a6;color:#fff}.input-area{background:white;border-top:1px solid #ecf0f1;padding:20px}.input-form{display:flex;gap:10px;align-items:flex-end}.input-textarea{flex:1;border:1px solid #d5dbdb;border-radius:6px;padding:12px;font-size:14px;line-height:1.4;resize:none;min-height:44px;max-height:120px;font-family:inherit}.input-textarea:focus{outline:none;border-color:#3498db;box-shadow:0 0 0 2px #3498db33}.send-button{background:#3498db;color:#fff;border:none;border-radius:6px;padding:12px 20px;font-size:14px;font-weight:500;cursor:pointer;transition:background .2s}.send-button:hover:not(:disabled){background:#2980b9}.send-button:disabled{background:#bdc3c7;cursor:not-allowed}.stop-button{background:#e74c3c;color:#fff;border:none;border-radius:6px;padding:12px 20px;font-size:14px;font-weight:500;cursor:pointer;transition:background .2s}.stop-button:hover{background:#c0392b}.sidebar h2{font-size:16px;margin-bottom:16px;color:#2c3e50;font-weight:600}.control-group{margin-bottom:20px}.control-label{display:block;font-size:13px;margin-bottom:6px;color:#7f8c8d;font-weight:500}.control-input{width:100%;padding:8px;border:1px solid #d5dbdb;border-radius:4px;background:white;color:#2c3e50;font-size:13px}.control-input:focus{outline:none;border-color:#3498db}.control-range{width:100%;margin:8px 0}.control-value{font-size:12px;color:#7f8c8d;text-align:right}.new-chat-button{width:100%;background:#74b9ff;color:#fff;border:none;border-radius:6px;padding:12px;font-size:14px;font-weight:500;cursor:pointer;margin-bottom:20px;transition:background .2s}.new-chat-button:hover{background:#0984e3}.message-text{white-space:pre-wrap}.message-markdown{white-space:normal}.markdown-paragraph{margin:0 0 12px;line-height:1.6}.markdown-paragraph:last-child{margin-bottom:0}.markdown-h1,.markdown-h2,.markdown-h3{margin:16px 0 8px;font-weight:600;line-height:1.3}.markdown-h1{font-size:18px;color:#2c3e50}.markdown-h2{font-size:16px;color:#34495e}.markdown-h3{font-size:14px;color:#34495e}.markdown-list{margin:8px 0;padding-left:20px}.markdown-list-item{margin:4px 0;line-height:1.5}.markdown-code-block{background:#f8f9fa;border:1px solid #e9ecef;border-radius:6px;padding:12px;margin:12px 0;overflow-x:auto;font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:13px;line-height:1.4}.markdown-inline-code{background:#f1f3f4;padding:2px 6px;border-radius:3px;font-family:Monaco,Menlo,Ubuntu Mono,monospace;font-size:13px;color:#d63384}.markdown-blockquote{border-left:4px solid #dee2e6;margin:12px 0;padding:8px 16px;background:#f8f9fa;color:#6c757d;font-style:italic}.markdown-bold{font-weight:600;color:#2c3e50}.markdown-italic{font-style:italic}.loading{opacity:.7}.copy-button{background:rgba(255,255,255,.2);border:1px solid rgba(255,255,255,.3);color:#ffffffe6;padding:4px 8px;border-radius:4px;font-size:11px;cursor:pointer;margin-top:8px}.copy-button:hover{background:rgba(255,255,255,.3);color:#fff}.message.assistant .copy-button{background:none;border:1px solid #d5dbdb;color:#7f8c8d}.message.assistant .copy-button:hover{background:#ecf0f1;color:#2c3e50}@media (max-width: 768px){.app{flex-direction:column}.sidebar{width:100%;max-height:200px}.message-content{max-width:90%}}