document.addEventListener('DOMContentLoaded', function() {
  const form = document.getElementById('registrationForm');
  const successMessage = document.getElementById('successMessage');

  form.addEventListener('submit', function(e) {
    e.preventDefault();

    const formData = new FormData(form);
    const data = {
      firstName: formData.get('firstName'),
      lastName: formData.get('lastName'),
      company: formData.get('company'),
      position: formData.get('position'),
      email: formData.get('email'),
      phone: formData.get('phone'),
      country: formData.get('country'),
      dietary: formData.get('dietary')
    };

    console.log('Заявка на участие:', data);

    form.style.display = 'none';
    successMessage.style.display = 'block';

    setTimeout(() => {
      alert('Спасибо за подтверждение участия!\n\nВаша заявка:\n' +
        data.firstName + ' ' + data.lastName + '\n' +
        data.company + ' — ' + data.position + '\n' +
        data.email + '\n' +
        data.phone + '\n' +
        'Страна: ' + data.country + '\n\n' +
        'Мы свяжемся с вами для уточнения деталей.');
    }, 500);
  });

  const phoneInput = document.getElementById('phone');
  phoneInput.addEventListener('input', function(e) {
    let x = e.target.value.replace(/\D/g, '').match(/(\d{0,1})(\d{0,3})(\d{0,3})(\d{0,2})(\d{0,2})/);
    if (!x[2]) {
      e.target.value = x[1] ? '+' + x[1] : '';
    } else {
      e.target.value = !x[3] ? '+7 (' + x[2] : '+7 (' + x[2] + ') ' + x[3] + (x[4] ? '-' + x[4] : '') + (x[5] ? '-' + x[5] : '');
    }
  });

  const inputs = form.querySelectorAll('input, select, textarea');
  inputs.forEach(input => {
    input.addEventListener('focus', function() {
      this.parentElement.classList.add('focused');
    });
    input.addEventListener('blur', function() {
      this.parentElement.classList.remove('focused');
    });
  });
});