html, body {
            height: 100%;
            margin: 0;
        }

        .modal-dialog {
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .modal-body {
            flex: 1;
            overflow-y: auto;
            padding: 0;
        }

        #chatbox_wrapper {
            height: 100%;
            overflow: hidden;
        }

        #chatbox {
            height: 100%;
            overflow-y: auto;
            padding: 10px;
            box-sizing: border-box;
            border: 1px solid #ccc;
        }

        .message {
            position: relative;
            padding: 10px;
            margin: 5px 0;
            border-radius: 5px;
            word-wrap: break-word;
        }

        .bot-message {
            background-color: #e0f7fa;
            margin-top: 10px;
        }

        .user-message {
            background-color: #c8e6c9;
            text-align: right;
            margin-top: 10px;
        }

        .message-time {
            font-size: 0.8em;
            color: #888;
            margin-bottom: 5px;
        }

        .typing-indicator {
            font-style: italic;
            color: gray;
            margin-top: 10px;
        }

        #welcome-message {
            background-color: #bcffcd;
            color: #0b7beb;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px;
            border-bottom: 1px solid #dee2e6;
            font-size: 16px;
            font-weight: bold;
        }

        .delete_message_chatbox {
            position: absolute;
            top: -6px;
            right: 5px;
            background: #dc3545;
            color: white;
            border-radius: 50%;
            width: 20px;
            height: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 14px;
            visibility: hidden;
        }

        .message:hover .delete_message_chatbox {
            visibility: visible;
        }

        .message:hover {
            background-color: #e2e2e2;
        }

        .icon-group_chatbot {
            display: flex;
            gap: 10px;
        }

        .icon-group_chatbot i {
            cursor: pointer;
        }