// Form data object
    const formData = {
        userDetails: {}
    };

    // Current step tracking
    let currentStep = 1;

    // Countries and states data
    const countries = [
      { code: 'US', name: 'United States' },
      { code: 'CA', name: 'Canada' },
      { code: 'GB', name: 'United Kingdom' },
      { code: 'AU', name: 'Australia' },
      { code: 'IN', name: 'India' },
      { code: 'DE', name: 'Germany' },
      { code: 'FR', name: 'France' },
      { code: 'BR', name: 'Brazil' },
      { code: 'JP', name: 'Japan' },
      { code: 'CN', name: 'China' }
    ];

    const states = {
      'US': [
        { code: 'CA', name: 'California' }, { code: 'TX', name: 'Texas' }, { code: 'FL', name: 'Florida' },
        { code: 'NY', name: 'New York' }, { code: 'IL', name: 'Illinois' }, { code: 'PA', name: 'Pennsylvania' },
        { code: 'OH', name: 'Ohio' }, { code: 'GA', name: 'Georgia' }, { code: 'NC', name: 'North Carolina' },
        { code: 'MI', name: 'Michigan' }
      ],
      'CA': [
        { code: 'ON', name: 'Ontario' }, { code: 'QC', name: 'Quebec' }, { code: 'BC', name: 'British Columbia' },
        { code: 'AB', name: 'Alberta' }, { code: 'MB', name: 'Manitoba' }, { code: 'SK', name: 'Saskatchewan' }
      ],
      'GB': [
        { code: 'ENG', name: 'England' }, { code: 'SCT', name: 'Scotland' }, { code: 'WLS', name: 'Wales' },
        { code: 'NIR', name: 'Northern Ireland' }
      ],
      'AU': [
        { code: 'NSW', name: 'New South Wales' }, { code: 'VIC', name: 'Victoria' }, { code: 'QLD', name: 'Queensland' },
        { code: 'WA', name: 'Western Australia' }, { code: 'SA', name: 'South Australia' }, { code: 'TAS', name: 'Tasmania' }
      ],
      'IN': [
        { code: 'MH', name: 'Maharashtra' }, { code: 'TN', name: 'Tamil Nadu' }, { code: 'UP', name: 'Uttar Pradesh' },
        { code: 'KA', name: 'Karnataka' }, { code: 'GJ', name: 'Gujarat' }, { code: 'RJ', name: 'Rajasthan' }
      ],
      'DE': [
        { code: 'BW', name: 'Baden-Württemberg' }, { code: 'BY', name: 'Bavaria' }, { code: 'BE', name: 'Berlin' },
        { code: 'HB', name: 'Bremen' }, { code: 'HH', name: 'Hamburg' }, { code: 'HE', name: 'Hesse' }
      ],
      'FR': [
        { code: 'ARA', name: 'Auvergne-Rhône-Alpes' }, { code: 'BFC', name: 'Bourgogne-Franche-Comté' }, 
        { code: 'BRE', name: 'Brittany' }, { code: 'CVL', name: 'Centre-Val de Loire' }, 
        { code: 'COR', name: 'Corsica' }, { code: 'GES', name: 'Grand Est' }
      ],
      'BR': [
        { code: 'SP', name: 'São Paulo' }, { code: 'RJ', name: 'Rio de Janeiro' }, { code: 'MG', name: 'Minas Gerais' },
        { code: 'BA', name: 'Bahia' }, { code: 'RS', name: 'Rio Grande do Sul' }, { code: 'PR', name: 'Paraná' }
      ],
      'JP': [
        { code: 'TK', name: 'Tokyo' }, { code: 'OS', name: 'Osaka' }, { code: 'KY', name: 'Kyoto' },
        { code: 'HK', name: 'Hokkaido' }, { code: 'OK', name: 'Okinawa' }, { code: 'KN', name: 'Kanagawa' }
      ],
      'CN': [
        { code: 'BJ', name: 'Beijing' }, { code: 'SH', name: 'Shanghai' }, { code: 'TJ', name: 'Tianjin' },
        { code: 'CQ', name: 'Chongqing' }, { code: 'GD', name: 'Guangdong' }, { code: 'JS', name: 'Jiangsu' }
      ]
    };

    // Initialize the form
    document.addEventListener('DOMContentLoaded', function() {
      // Populate country dropdown
      const countrySelect = document.getElementById('country');
      countrySelect.innerHTML = '<option value="" disabled selected></option>';
      
      countries.forEach(country => {
        const option = document.createElement('option');
        option.value = country.code;
        option.textContent = country.name;
        countrySelect.appendChild(option);
      });

      // Add event listener for country change
      countrySelect.addEventListener('change', function() {
        const countryCode = this.value;
        const stateSelect = document.getElementById('state');
        
        // Show loading
        document.getElementById('state-loading').style.display = 'block';
        
        // Clear current states
        stateSelect.innerHTML = '<option value="" disabled selected></option>';
        
        // Simulate API delay
        setTimeout(() => {
          if (countryCode && states[countryCode]) {
            states[countryCode].forEach(state => {
              const option = document.createElement('option');
              option.value = state.code;
              option.textContent = state.name;
              stateSelect.appendChild(option);
            });
          }
          
          // Hide loading
          document.getElementById('state-loading').style.display = 'none';
        }, 500);
      });


      // Add input event listeners to handle label animation
      document.querySelectorAll('.input-field:not(.dob)').forEach(input => {
        setTimeout(() => {
            if (input.value) {
                input.nextElementSibling.style.top = '4px';
                input.nextElementSibling.style.fontSize = '12px';
                input.nextElementSibling.style.transform = 'none';
            }
        }, 100);

        input.addEventListener('animationstart', function() {
            if (this.value) {
                this.nextElementSibling.style.top = '4px';
                this.nextElementSibling.style.fontSize = '12px';
                this.nextElementSibling.style.transform = 'none';
            }
        });
        input.addEventListener('input', function() {
          if (this.value) {
            this.nextElementSibling.style.top = '4px';
            this.nextElementSibling.style.fontSize = '12px';
            this.nextElementSibling.style.transform = 'none';
          } else {
            this.nextElementSibling.style.top = '50%';
            this.nextElementSibling.style.fontSize = '14px';
            this.nextElementSibling.style.transform = 'translateY(-50%)';
          }
        });
        
        input.addEventListener('focus', function() {
          this.nextElementSibling.style.top = '4px';
          this.nextElementSibling.style.fontSize = '12px';
          this.nextElementSibling.style.transform = 'none';
        });
        
        input.addEventListener('blur', function() {
          if (!this.value) {
            this.nextElementSibling.style.top = '50%';
            this.nextElementSibling.style.fontSize = '14px';
            this.nextElementSibling.style.transform = 'translateY(-50%)';
          }
        });
      });

      // Handle select field label animation
      document.querySelectorAll('.select-field').forEach(select => {
        setTimeout(() => {
            if (select.value) {
                select.nextElementSibling.style.top = '4px';
                select.nextElementSibling.style.fontSize = '12px';
                select.nextElementSibling.style.transform = 'none';
            }
        }, 100);
        select.addEventListener('change', function() {
          if (this.value) {
            this.nextElementSibling.style.top = '4px';
            this.nextElementSibling.style.fontSize = '12px';
            this.nextElementSibling.style.transform = 'none';
          } else {
            this.nextElementSibling.style.top = '50%';
            this.nextElementSibling.style.fontSize = '14px';
            this.nextElementSibling.style.transform = 'translateY(-50%)';
          }
        });
        
        select.addEventListener('focus', function() {
          this.nextElementSibling.style.top = '4px';
          this.nextElementSibling.style.fontSize = '12px';
          this.nextElementSibling.style.transform = 'none';
        });
        
        select.addEventListener('blur', function() {
          if (!this.value) {
            this.nextElementSibling.style.top = '50%';
            this.nextElementSibling.style.fontSize = '14px';
            this.nextElementSibling.style.transform = 'translateY(-50%)';
          }
        });
      });

      // Step navigation for desktop
      document.querySelectorAll('.step').forEach(step => {
        step.addEventListener('click', function() {
          const stepNum = parseInt(this.getAttribute('data-step'));
          if (stepNum <= currentStep || stepNum === getMaxCompletedStep() + 1) {
            goToStep(stepNum);
          }
        });
      });

      // Step navigation for mobile
      document.querySelectorAll('.mobile-step').forEach(step => {
        step.addEventListener('click', function() {
          const stepNum = parseInt(this.getAttribute('data-step'));
          if (stepNum <= currentStep || stepNum === getMaxCompletedStep() + 1) {
            goToStep(stepNum);
          }
        });
      });
    });

    // Function to navigate to any step (for tab navigation)
    function goToStep(step) {
        // Only allow navigation to completed steps or the next step
        if (step > currentStep && step > getMaxCompletedStep() + 1) {
            return;
        }

        // Hide current step
        document.getElementById(`step-${currentStep}`).classList.remove('active');
        document.querySelectorAll(`.step[data-step="${currentStep}"]`).forEach(el => {
            el.classList.remove('active');
        });

        document.querySelectorAll(`.mobile-step[data-step="${currentStep}"]`).forEach(el => {
            el.classList.remove('active');
        });

        // Show target step
        document.getElementById(`step-${step}`).classList.add('active');
        document.querySelectorAll(`.step[data-step="${step}"]`).forEach(el => {
            el.classList.add('active');
        });

        document.querySelectorAll(`.mobile-step[data-step="${step}"]`).forEach(el => {
            el.classList.add('active');
        });

        currentStep = step;
    }

    // Function to get the maximum completed step
    function getMaxCompletedStep() {
        const completedSteps = document.querySelectorAll('.step.completed');
        let maxStep = 0;
        completedSteps.forEach(step => {
            const stepNum = parseInt(step.getAttribute('data-step'));
            if (stepNum > maxStep) maxStep = stepNum;
        });
        return maxStep;
    }

    async function handleNextStep(step) {
        await nextStep(step);
    }

    // Function to navigate to next step
    async function nextStep(step) {
        // Validate current step before proceeding
        if (!(await validateStep(currentStep))) {
            return;
        }

        // Save current step data
        saveStepData(currentStep);

        // Mark current step as completed
        document.querySelectorAll(`.step[data-step="${currentStep}"]`).forEach(el => {
            el.classList.add('completed');
            const stepNumber = el.querySelector('.step-number');
            stepNumber.textContent = '✓';
            stepNumber.style.backgroundColor = '#000000';
            stepNumber.style.borderColor = '#000000';
            stepNumber.style.color = 'white';
        });

        document.querySelectorAll(`.mobile-step[data-step="${currentStep}"]`).forEach(el => {
            el.classList.add('completed');
            const stepNumber = el.querySelector('.step-number');
            stepNumber.textContent = '✓';
            stepNumber.style.backgroundColor = '#000000';
            stepNumber.style.borderColor = '#000000';
            stepNumber.style.color = 'white';
        });

        // Hide current step
        document.getElementById(`step-${currentStep}`).classList.remove('active');
        document.querySelectorAll(`.step[data-step="${currentStep}"]`).forEach(el => {
            el.classList.remove('active');
        });

        document.querySelectorAll(`.mobile-step[data-step="${currentStep}"]`).forEach(el => {
            el.classList.remove('active');
        });

        // Show next step
        document.getElementById(`step-${step}`).classList.add('active');
        document.querySelectorAll(`.step[data-step="${step}"]`).forEach(el => {
            el.classList.add('active');
        });

        document.querySelectorAll(`.mobile-step[data-step="${step}"]`).forEach(el => {
            el.classList.add('active');
        });

        currentStep = step;
    }

    // Function to navigate to previous step
    function prevStep(step) {
        // Hide current step
        document.getElementById(`step-${currentStep}`).classList.remove('active');
        document.querySelectorAll(`.step[data-step="${currentStep}"]`).forEach(el => {
            el.classList.remove('active');
        });

        document.querySelectorAll(`.mobile-step[data-step="${currentStep}"]`).forEach(el => {
            el.classList.remove('active');
        });

        // Show previous step
        document.getElementById(`step-${step}`).classList.add('active');
        document.querySelectorAll(`.step[data-step="${step}"]`).forEach(el => {
            el.classList.add('active');
        });

        document.querySelectorAll(`.mobile-step[data-step="${step}"]`).forEach(el => {
            el.classList.add('active');
        });

        currentStep = step;
    }

    // Function to validate current step
    async function validateStep(step) {
        let isValid = true;
        const form = document.getElementById(getFormId(step));

        // Hide any previous errors for this step
        hideError(step);
        clearFieldErrors();
        
        if (form) {
            // For account setup step
            if (step === 1) {
                const email = document.getElementById('email').value;
                const password = document.getElementById('password').value;
                const confirmPassword = document.getElementById('confirmPassword').value;

                if(!email && !password) {
                    showError('', 'email', step);
                    showError('', 'password', step);
                    showError('Please enter a valid email address and password', 'confirmPassword', step);
                    isValid = false;
                    return isValid;
                }
                
                // Email validation
                if (!validateEmail(email)) {
                    showError('Please enter a valid email address', 'email', step);
                    isValid = false;
                } else {
                    // Email verification - wait for the result
                    const isEmailVerified = await verifyEmail(email);
                    if (!isEmailVerified) {
                        showError('Email already registered. Please use a different email address.', 'email', step);
                        isValid = false;
                    }
                }

                // Password validation
                if (password.length < 8) {
                    showError('Password must be at least 8 characters long', 'password', step);
                    isValid = false;
                }
                
                if (password !== confirmPassword) {
                    document.getElementById('password-match-error').style.display = 'block';
                    document.getElementById('confirmPassword').classList.add('field-error');
                    showError('Passwords do not match', 'confirmPassword', step);
                    isValid = false;
                } else {
                    document.getElementById('password-match-error').style.display = 'none';
                    document.getElementById('confirmPassword').classList.remove('field-error');
                }
            }
            
            // For personal information step
            if (step === 2) {
                const firstName = document.getElementById('firstName').value;
                if (!firstName) {
                    document.getElementById('profile-incomplete').style.display = 'block';
                    document.getElementById('firstName').classList.add('field-error');
                    showError('First name is required', 'firstName', step);
                    isValid = false;
                } else {
                    document.getElementById('profile-incomplete').style.display = 'none';
                    document.getElementById('firstName').classList.remove('field-error');
                }
                
                // Age validation
                const age = document.getElementById('age').value;
                if (age && (age < 18 || age > 100)) {
                    showError('You age must be 18 years or older to register', 'age', step);
                    isValid = false;
                }

                // Country and state validation
                const country = document.getElementById('country').value;
                const state = document.getElementById('state').value;
                
                if (!country) {
                    showError('Please select your country', 'country', step);
                    isValid = false;
                }
                
                if (!state) {
                    showError('Please select your state/region', 'state', step);
                    isValid = false;
                }
                
                // Validate other required fields
                const requiredFields = form.querySelectorAll('[required]');
                requiredFields.forEach(field => {
                    if (!field.value.trim()) {
                        isValid = false;
                        field.classList.add('field-error');
                        if (isValid === false) {
                            showError(`Please fill in ${field.labels[0]?.textContent || 'this field'}`, field.id, step);
                        }
                    } else {
                        field.classList.remove('field-error');
                    }
                });
            }

            if (step === 3) {
                // Phone number validation
                const phone = document.getElementById('phone').value;
                if (!phone) {
                    showError('Please enter your phone number', 'phone', step);
                    isValid = false;
                } else if (!validatePhoneNumberStrict(phone)) {
                    document.getElementById('phone-error').style.display = 'block';
                    document.getElementById('phone').classList.add('field-error');
                    showError('Please enter a valid phone number (10-15 digits)', 'phone', step);
                    isValid = false;
                } else {
                    document.getElementById('phone-error').style.display = 'none';
                    document.getElementById('phone').classList.remove('field-error');
                }
                
                // Validate other required fields in step 3
                const requiredFields = form.querySelectorAll('[required]');
                requiredFields.forEach(field => {
                    if (!field.value.trim()) {
                        isValid = false;
                        field.classList.add('field-error');
                    } else {
                        field.classList.remove('field-error');
                    }
                });
            }
            
            // For payment step
            if (step === 4) {
              const selectedPayment = document.querySelector('.payment-option.selected');
              if (!selectedPayment) {
                  showError('Please select a payment method', null, step);
                  isValid = false;
              } else {
                  const paymentMethod = selectedPayment.getAttribute('onclick').match(/'([^']+)'/)[1];
                  if (paymentMethod === 'payoneer') {
                      const payoneerAccount = document.getElementById('payoneerAccount').value;
                      if (!payoneerAccount) {
                          showError('Please enter your Payoneer account number', 'payoneerAccount', step);
                          isValid = false;
                      }
                  } else if (paymentMethod === 'veem') {
                      const veemAccount = document.getElementById('veemAccount').value;
                      if (!veemAccount) {
                          showError('Please enter your Veem account number', 'veemAccount', step);
                          isValid = false;
                      }
                  }
              }
            }
            
            // For other steps
            if (step !== 1 && step !== 2 && step !== 4) {
                const requiredFields = form.querySelectorAll('[required]');
                requiredFields.forEach(field => {
                    if (!field.value.trim()) {
                        isValid = false;
                        field.classList.add('field-error');
                    } else {
                        field.classList.remove('field-error');
                    }
                });
            }
        }
        
        return isValid;
    }

    // Email validation function
    function validateEmail(email) {
        const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
        return emailRegex.test(email);
    }

    // Function to get form ID based on step
    function getFormId(step) {
        switch(step) {
            case 1: return 'account-form';
            case 2: return 'personal-form';
            case 3: return 'contact-form';
            case 4: return 'payment-form';
            default: return '';
        }
    }

    // Function to save step data to formData object
    function saveStepData(step) {
        switch(step) {
            case 1:
                formData.userDetails.email = document.getElementById('email').value;
                formData.userDetails.password = document.getElementById('password').value;
                break;
            case 2:
                formData.userDetails.firstName = document.getElementById('firstName').value;
                formData.userDetails.lastName = document.getElementById('lastName').value;
                formData.userDetails.age = document.getElementById('age').value;
                formData.userDetails.dob = document.getElementById('dob').value;
                formData.userDetails.address = document.getElementById('address').value;
                formData.userDetails.city = document.getElementById('city').value;
                formData.userDetails.state = document.getElementById('state').value;
                formData.userDetails.country = document.getElementById('country').value;
                break;
            case 3:
                formData.userDetails.phone = document.getElementById('phone').value;
                formData.userDetails.skype = document.getElementById('skype').value;
                break;
            case 4:
                const selectedPayment = document.querySelector('.payment-option.selected');
                if (selectedPayment) {
                    const paymentMethod = selectedPayment.getAttribute('onclick').match(/'([^']+)'/)[1];
                    formData.userDetails.paymentMethod = paymentMethod;
                    
                    if (document.getElementById('payoneerAccount').value) {
                        formData.userDetails.payoneerAccount = document.getElementById('payoneerAccount').value;
                    } 
                    if (document.getElementById('veemAccount').value) {
                        formData.userDetails.veemAccount = document.getElementById('veemAccount').value;
                    }
                }
                break;
        }
    }

    // Function to select payment method
    function selectPaymentMethod(method) {
        // Remove selected class from all options
        document.querySelectorAll('.payment-option').forEach(option => {
            option.classList.remove('selected');
        });
        
        // Hide all payment details
        document.querySelectorAll('.payment-details').forEach(details => {
            details.style.display = 'none';
        });
        
        // Add selected class to clicked option
        event.currentTarget.classList.add('selected');
        
        // Show appropriate payment details
        if (method === 'payoneer') {
            document.getElementById('payoneer-details').style.display = 'block';
        } else if (method === 'veem') {
            document.getElementById('veem-details').style.display = 'block';
        }
    }

    // Function to generate a strong password
    function generatePassword() {
        const length = 12;
        const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%^&*";
        let password = "";
        
        // Ensure at least one of each required character type
        password += "ABCDEFGHIJKLMNOPQRSTUVWXYZ"[Math.floor(Math.random() * 26)];
        password += "abcdefghijklmnopqrstuvwxyz"[Math.floor(Math.random() * 26)];
        password += "0123456789"[Math.floor(Math.random() * 10)];
        password += "!@#$%^&*"[Math.floor(Math.random() * 8)];
        
        // Fill the rest randomly
        for (let i = password.length; i < length; i++) {
            password += charset.charAt(Math.floor(Math.random() * charset.length));
        }
        
        // Shuffle the password
        password = password.split('').sort(() => 0.5 - Math.random()).join('');
        
        // Set the password field
        document.getElementById('password').value = password;
        document.getElementById('confirmPassword').value = password;
        
        // Trigger input events to update UI
        document.getElementById('password').dispatchEvent(new Event('input'));
        document.getElementById('confirmPassword').dispatchEvent(new Event('input'));
    }

    // Function to toggle password visibility
    function togglePasswordVisibility() {
        const passwordField = document.getElementById('password');
        const confirmField = document.getElementById('confirmPassword');
        const toggleButton = document.querySelector('.password-toggle');
        
        if (passwordField.type === 'password') {
            passwordField.type = 'text';
            confirmField.type = 'text';
            toggleButton.textContent = 'Hide Password';
        } else {
            passwordField.type = 'password';
            confirmField.type = 'password';
            toggleButton.textContent = 'Show Password';
        }
    }

    // Function to submit the form
    async function submitForm() {
        // Validate current step
        if (!validateStep(currentStep)) {
            return;
        }
        
        // Save current step data
        saveStepData(currentStep);
        
        // Show loading state
        const submitBtn = document.querySelector('#payment-form .btn-primary');
        const originalText = submitBtn.textContent;
        submitBtn.textContent = 'Processing...';
        submitBtn.disabled = true;
        
        try {
            // Send data to server using fetch
            // console.log('Submitting form data:', formData);
            const response = await fetch('/api/v1/va/register', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                },
                body: JSON.stringify(formData)
            });
            
            if (response.ok) {
                // Success - move to success step
                // Mark current step as completed
                document.querySelectorAll(`.step[data-step="${currentStep}"]`).forEach(el => {
                    el.classList.add('completed');
                    const stepNumber = el.querySelector('.step-number');
                    stepNumber.textContent = '✓';
                    stepNumber.style.backgroundColor = '#000000';
                    stepNumber.style.borderColor = '#000000';
                    stepNumber.style.color = 'white';
                });
                
                document.querySelectorAll(`.mobile-step[data-step="${currentStep}"]`).forEach(el => {
                    el.classList.add('completed');
                    const stepNumber = el.querySelector('.step-number');
                    stepNumber.textContent = '✓';
                    stepNumber.style.backgroundColor = '#000000';
                    stepNumber.style.borderColor = '#000000';
                    stepNumber.style.color = 'white';
                });
                
                nextStep(5);
                setTimeout(() => {
                    window.location.href = '/download-tracker';
                }, 1000);
            } else {
                // Handle server errors
                showError('There was an error submitting your registration. Please try again.', null, 4);
            }
        } catch (error) {
            // Handle network errors
            console.error('Error:', error);
            showError('There was a network error. Please check your connection and try again.', null, 4);
        } finally {
            // Restore button state
            submitBtn.textContent = originalText;
            submitBtn.disabled = false;
        }
    }

    async function verifyEmail(email) {
        
        try {
            const response = await fetch('/api/v1/va/verify-va-email', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json',
                },
                body: JSON.stringify({"email": email})
            });
            
            if (response.ok) {
                return false;
            } else {
                return true;
            }
        } catch (error) {
            // Handle network errors
            console.error('Error:', error);
            showError('There was a network error. Please check your connection and try again.', null, 1);
            return false;
        }
    }

    // Function to calculate age from date of birth
    function calculateAge(dob) {
        if (!dob) return '';
        
        const birthDate = new Date(dob);
        const today = new Date();
        
        let age = today.getFullYear() - birthDate.getFullYear();
        const monthDiff = today.getMonth() - birthDate.getMonth();
        
        // Adjust age if birthday hasn't occurred this year yet
        if (monthDiff < 0 || (monthDiff === 0 && today.getDate() < birthDate.getDate())) {
            age--;
        }
        
        return age;
    }

    // Function to handle date of birth change and update age
    function handleDOBChange() {
        const dob = document.getElementById('dob').value;
        const ageInput = document.getElementById('age');
        
        if (dob) {
            const age = calculateAge(dob);
            ageInput.value = age;
            
            // Trigger input event to update the label position
            ageInput.dispatchEvent(new Event('input'));
            
            // Validate age
            if (age < 18) {
                // alert('You must be 18 years or older to register');
                // showError('You Age must be 18 years or older to register', 'dob');
                showError('You Age must be 18 years or older to register', 'age');
                ageInput.style.border = '1px solid #ef4444';
            } else if (age > 100) {
                // alert('Please enter a valid age');
                // showError('Please enter a valid age', 'dob');
                showError('Please enter a valid age', 'age');
                ageInput.style.border = '1px solid #ef4444';
            } else {
                ageInput.style.border = '';
            }
        } else {
            // Clear age if DOB is cleared
            ageInput.value = '';
            ageInput.dispatchEvent(new Event('input'));
        }
    }

    // Function to handle age manual input and update DOB (optional)
    function handleAgeChange() {
        const age = document.getElementById('age').value;
        const dobInput = document.getElementById('dob');
        
        if (age && age >= 18 && age <= 100) {
            // Calculate approximate DOB based on age
            const today = new Date();
            const birthYear = today.getFullYear() - age;
            const approximateDOB = `${birthYear}-${String(today.getMonth() + 1).padStart(2, '0')}-${String(today.getDate()).padStart(2, '0')}`;
            
            // You can set this as the DOB or just leave it for reference
            // dobInput.value = approximateDOB;
            // dobInput.dispatchEvent(new Event('change'));
        }
    }

    // Function to validate phone number in real-time
    function validatePhoneNumber(input) {
        const phoneError = document.getElementById('phone-error');
        const value = input.value;
        
        // Remove any non-digit characters
        const digitsOnly = value.replace(/\D/g, '');
        
        // Update the input value with digits only
        if (value !== digitsOnly) {
            input.value = digitsOnly;
        }
        
        // Validate length
        if (digitsOnly.length > 0 && (digitsOnly.length < 10 || digitsOnly.length > 15)) {
            phoneError.style.display = 'block';
            input.style.border = '1px solid #ef4444';
            return false;
        } else {
            phoneError.style.display = 'none';
            input.style.border = '';
            return true;
        }
    }

    // Function to validate phone number on form submission
    function validatePhoneNumberStrict(phone) {
        const phoneRegex = /^[0-9]{10,15}$/;
        return phoneRegex.test(phone);
    }

    // Function to validate Payoneer account number
    function validatePayoneerAccount(input) {
        const payoneerError = document.getElementById('payoneer-error');
        const value = input.value.trim();
        
        // Payoneer typically uses email format or alphanumeric IDs
        // Adjust validation rules based on Payoneer's actual format requirements
        if (value.length > 0 && (value.length < 5 || value.length > 20)) {
            payoneerError.textContent = 'Payoneer account must be 5-20 characters';
            payoneerError.style.display = 'block';
            input.style.border = '1px solid #ef4445';
            return false;
        } else {
            payoneerError.style.display = 'none';
            input.style.border = '';
            return true;
        }
    }

    // Function to validate Veem account number
    function validateVeemAccount(input) {
        const veemError = document.getElementById('veem-error');
        const value = input.value.trim();
        
        // Veem account numbers are typically longer alphanumeric strings
        if (value.length > 0 && (value.length < 8 || value.length > 25)) {
            veemError.textContent = 'Veem account must be 8-25 characters';
            veemError.style.display = 'block';
            input.style.border = '1px solid #ef4445';
            return false;
        } else {
            veemError.style.display = 'none';
            input.style.border = '';
            return true;
        }
    }

    function showError(message, fieldId = null, step = null) {
        // Determine the current step if not provided
        const currentStep = step || getCurrentStep();
        const errorContainer = document.getElementById(`step-${currentStep}-error`);
        const errorMessage = document.getElementById(`step-${currentStep}-error-message`);
        
        if (errorContainer && errorMessage) {
            errorMessage.textContent = message;
            errorContainer.style.display = 'block';
            
            // Scroll to error container
            errorContainer.scrollIntoView({ behavior: 'smooth', block: 'center' });
            
            // Highlight specific field if provided
            if (fieldId) {
                const field = document.getElementById(fieldId);
                if (field) {
                    field.classList.add('field-error');
                    // Remove error after 5 seconds
                    setTimeout(() => {
                        field.classList.remove('field-error');
                    }, 5000);
                }
            }
            
            // Auto-hide error after 8 seconds
            setTimeout(() => {
                hideError(currentStep);
            }, 8000);
        }
    }

    function hideError(step = null) {
        if (step) {
            // Hide specific step error
            const errorContainer = document.getElementById(`step-${step}-error`);
            if (errorContainer) {
                errorContainer.style.display = 'none';
            }
        } else {
            // Hide all step errors
            for (let i = 1; i <= 5; i++) {
                const errorContainer = document.getElementById(`step-${i}-error`);
                if (errorContainer) {
                    errorContainer.style.display = 'none';
                }
            }
        }
    }

    function clearFieldErrors() {
        document.querySelectorAll('.field-error').forEach(field => {
            field.classList.remove('field-error');
        });
    }

    function getCurrentStep() {
        return currentStep;
    }

    function handleChangeSelect(selectElement) {
        const selectedValue = selectElement.value;
        let option = selectElement.querySelector('option:disabled');

        if (selectedValue !== "") {
            option.style.display = "none";
        } else {
            option.style.display = "";
        }
    }