body{margin:0;min-width:320px;min-height:100vh}#root{min-height:100vh}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#f5f5f5}.chat-container{max-width:600px;margin:0 auto;height:100vh;display:flex;flex-direction:column;background:#fff}.chat-header{padding:16px;border-bottom:1px solid #eee;display:flex;justify-content:space-between;align-items:center}.chat-header h1{margin:0;font-size:20px}.status{font-size:12px;color:#999}.status.connected{color:#28a745}.error{padding:8px 16px;background:#f8d7da;color:#721c24;font-size:14px}.chat-messages{flex:1;overflow-y:auto;padding:16px;display:flex;flex-direction:column;gap:12px}.message{max-width:70%;padding:10px 14px;border-radius:12px;font-size:14px;line-height:1.4}.message.user{align-self:flex-end;background:#007bff;color:#fff}.message.bot{align-self:flex-start;background:#e9ecef;color:#333}.chat-input{padding:16px;border-top:1px solid #eee;display:flex;gap:8px}.chat-input input{flex:1;padding:10px 14px;border:1px solid #ddd;border-radius:20px;font-size:14px;outline:none}.chat-input input:focus{border-color:#007bff}.chat-input button{padding:10px 20px;background:#007bff;color:#fff;border:none;border-radius:20px;font-size:14px;cursor:pointer}.chat-input button:hover{background:#0056b3}.chat-input button:disabled{background:#ccc;cursor:not-allowed}.empty{text-align:center;color:#999;margin-top:40px}