#module1-chatbot{border:1px solid #ddd;padding:16px;border-radius:10px;background:#fff;margin-top:20px}#chat-messages{max-height:320px;overflow-y:auto;border:1px solid #eee;padding:12px;margin-bottom:12px;background:#fafafa}.module1-chat-message{margin-bottom:12px;padding:10px;border-radius:8px;background:#f3f4f6}#chat-input{width:100%;min-height:90px;padding:10px;margin-bottom:10px;box-sizing:border-box}#chat-send{padding:10px 18px;border:none;border-radius:8px;background:#1d4ed8;color:#fff;cursor:pointer}#chat-send:disabled{opacity:.6;cursor:not-allowed}