.fcw-chat{width:100%;max-width:420px;border:1px solid #ddd;padding:10px;border-radius:8px;background:#fff}
.fcw-messages{height:300px;overflow:auto;padding:6px;background:#f9f9f9;border-radius:6px}
.fcw-msg{margin:6px 0;padding:6px;border-radius:4px}
.fcw-user{background:#e6ffe6;text-align:right}
.fcw-assistant{background:#e6f0ff;text-align:left}
.fcw-error{color:#b00;background:#ffecec;padding:6px;border-radius:4px}
.fcw-composer{display:flex;margin-top:8px}
#fcw_input{flex:1;padding:8px;border:1px solid #ccc;border-radius:4px;margin-right:6px}
#fcw_send{padding:8px 12px;border-radius:4px;border:0;background:#0073aa;color:#fff;cursor:pointer}