:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;box-sizing:border-box;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;display:flex;place-items:center;min-height:75vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s;margin-top:12px}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}button{background-color:#535bf2;color:#fff}button:hover{border-color:#fff}}body{margin:0;font-family:Segoe UI,sans-serif}.app-container{display:flex;height:100vh;width:100vw}.sidebar{width:240px;background-color:#202123;color:#fff;display:flex;flex-direction:column;padding:16px}.sidebar h3{margin-top:0}.new-chat-btn{background-color:#444654;border:none;padding:8px;margin-bottom:16px;color:#fff;border-radius:6px;cursor:pointer}.new-chat-btn:hover{background-color:#555}.thread-list{flex:1;overflow-y:auto}.thread-item{background-color:#333;padding:10px;margin-bottom:6px;border-radius:6px;cursor:pointer}.thread-title{font-weight:700}.thread-preview{display:block;font-size:.8rem;color:#ccc;margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-area{flex:1;display:flex;flex-direction:column;background-color:#f6f6f6}.chat-box{flex:1;padding:16px;overflow-y:auto;display:flex;flex-direction:column;gap:12px}.message{display:flex;max-width:75%}.message.user{align-self:flex-end;justify-content:flex-end}.message.assistant{align-self:flex-start}.bubble{padding:10px 16px;border-radius:20px;background-color:#fff;color:#111;white-space:pre-wrap}.message.user .bubble{background-color:#343541;color:#fff}.input-area{display:flex;padding:12px 16px;gap:8px;border-top:1px solid #ddd;background-color:#fff}.input-area textarea{flex:1;border-radius:12px;border:1px solid #ccc;padding:8px;resize:none}.input-area button{border:none;border-radius:12px;padding:8px 16px;background-color:#4a90e2;color:#fff;cursor:pointer}.delete-thread-btn{background:transparent;border:none;color:#ff4d4f;cursor:pointer;font-size:.85rem;margin-left:8px;transition:color .2s}.delete-thread-btn:hover{color:red}.thread-item{display:flex;justify-content:space-between;align-items:center;background-color:#333;padding:10px;margin-bottom:6px;border-radius:6px;cursor:pointer}.thread-item.active-thread{background-color:#4a90e2}.warming-up-msg{padding:10px;margin:10px 0;font-style:italic;color:#ff9800;background-color:#fff3e0;border-radius:6px}.bubble table{width:100%;border-collapse:collapse;margin-top:8px}.bubble th,.bubble td{border:1px solid #333;padding:8px;text-align:left}.bubble th{background-color:#1f2937;color:#fff}