:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5;font-weight:400;color:#213547;background-color:#f5f5f5;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{margin:0;padding:0;box-sizing:border-box}body{min-width:320px;height:100vh;overflow:hidden}#root{height:100vh}.chat-container{display:flex;flex-direction:column;height:100vh}.chat-header{display:flex;align-items:center;gap:16px;padding:12px 20px;background:#fff;border-bottom:1px solid #e0e0e0;flex-shrink:0}.chat-header h1{font-size:1.2rem;font-weight:600}.thread-id{font-size:.8rem;color:#888;background:#f0f0f0;padding:2px 8px;border-radius:4px}.messages-area{flex:1;overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:12px}.empty-state{display:flex;align-items:center;justify-content:center;height:100%;color:#999;font-size:.95rem}.message{display:flex;max-width:70%}.message-user{align-self:flex-end}.message-assistant{align-self:flex-start}.message-bubble{padding:10px 16px;border-radius:16px;line-height:1.5;word-break:break-word}.message-bubble p{margin:.4em 0}.message-bubble p:first-child{margin-top:0}.message-bubble p:last-child{margin-bottom:0}.message-bubble ul,.message-bubble ol{margin:.4em 0;padding-left:1.5em}.message-bubble code{background:#00000014;padding:1px 4px;border-radius:3px;font-size:.9em}.message-bubble pre{background:#00000014;padding:8px 12px;border-radius:6px;overflow-x:auto;margin:.4em 0}.message-bubble pre code{background:none;padding:0}.message-bubble h1,.message-bubble h2,.message-bubble h3{margin:.6em 0 .3em;font-size:1em;font-weight:600}.message-bubble table{border-collapse:collapse;margin:.4em 0;font-size:.9em}.message-bubble th,.message-bubble td{border:1px solid rgba(0,0,0,.15);padding:4px 8px}.message-user .message-bubble{background:#0084ff;color:#fff;border-bottom-right-radius:4px}.message-assistant .message-bubble{background:#e8e8e8;color:#213547;border-bottom-left-radius:4px}.message-bubble.loading{color:#999;animation:pulse 1s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.input-bar{display:flex;gap:8px;padding:12px 20px;background:#fff;border-top:1px solid #e0e0e0;flex-shrink:0}.message-input{flex:1;padding:10px 16px;border:1px solid #ddd;border-radius:24px;font-size:.95rem;outline:none;transition:border-color .2s}.message-input:focus{border-color:#0084ff}.message-input:disabled{background:#f5f5f5}.send-button{padding:10px 20px;background:#0084ff;color:#fff;border:none;border-radius:24px;font-size:.95rem;font-weight:500;cursor:pointer;transition:background .2s}.send-button:hover:not(:disabled){background:#0073e6}.send-button:disabled{background:#b0d4ff;cursor:not-allowed}