/* Popup Modal Styling */
        .chat-modal {
            display: none;
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 350px;
            background: white;
            border-radius: 10px;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
            z-index: 1000;
            font-family: Arial, sans-serif;
        }

        .chat-header {
            background: #4CAF50;
            color: white;
            padding: 15px;
            border-top-left-radius: 10px;
            border-top-right-radius: 10px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .chat-header h3 {
            margin: 0;
            font-size: 18px;
        }

        .close-btn {
            cursor: pointer;
            font-size: 20px;
        }

        .chat-body {
            padding: 15px;
            max-height: 300px;
            overflow-y: auto;
        }

        .chat-message {
            margin-bottom: 10px;
            padding: 10px;
            border-radius: 5px;
            max-width: 80%;
        }

        .user-message {
            background: #e3f2fd;
            margin-left: auto;
        }

        .ai-message {
            background: #f1f1f1;
            margin-right: auto;
        }

        .chat-input {
            display: flex;
            padding: 10px;
            border-top: 1px solid #ddd;
        }

        .chat-input input {
            flex: 1;
            padding: 10px;
            border: 1px solid #ddd;
            border-radius: 5px;
            margin-right: 10px;
        }

        .chat-input button {
            background: #4CAF50;
            color: white;
            border: none;
            padding: 10px 15px;
            border-radius: 5px;
            cursor: pointer;
        }

        .chat-input button:hover {
            background: #45a049;
        }

        /* Overlay */
        .overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 999;
        }

        /* Language Selection Modal */
        .lang-modal {
            display: none;
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 300px;
            background: white;
            border-radius: 10px;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
            z-index: 1001;
            padding: 20px;
            text-align: center;
        }

        .lang-modal h3 {
            margin: 0 0 15px;
            font-size: 18px;
        }

        .lang-modal button {
            background: #4CAF50;
            color: white;
            border: none;
            padding: 10px 15px;
            border-radius: 5px;
            cursor: pointer;
            margin: 5px;
        }

        .lang-modal button:hover {
            background: #45a049;
        }