.form-container {
                max-width: 500px;
                margin: 20px auto;
                padding: 20px;
                border: 1px solid #ddd;
                border-radius: 5px;
                background: #f9f9f9;
            }
            .form-group {
                margin: 15px 0;
            }
            .form-control {
                padding: 8px;
                border: 1px solid #ddd;
                border-radius: 3px;
                box-sizing: border-box;
            }
            .form-control:focus {
                border-color: #007bff;
                outline: none;
            }
            label {
                display: block;
                margin-bottom: 5px;
                font-weight: bold;
            }
            .btn {
                display: inline-block;
                padding: 10px 20px;
                background: #28a745;
                color: white;
                border: none;
                border-radius: 3px;
                cursor: pointer;
                font-size: 14px;
            }
            .btn:hover {
                background: #218838;
            }
            .alert {
                padding: 15px;
                margin: 20px 0;
                border-radius: 3px;
            }
            .alert-danger {
                background: #f8d7da;
                color: #721c24;
                border: 1px solid #f5c6cb;
            }
            .captcha-image {
                margin: 10px 0;
                border: 1px solid #ddd;
                border-radius: 3px;
            }
            .captcha-refresh {
                display: inline-block;
                margin-left: 10px;
                color: #007bff;
                cursor: pointer;
                text-decoration: underline;
            }
            .captcha-refresh:hover {
                color: #0056b3;
            }
            .phone-hint {
                font-size: 12px;
                color: #666;
                margin-top: 5px;
            }