function openReservationForm() {
  const now = new Date();
  const formattedDate = now.toLocaleDateString('cs-CZ', { day: '2-digit', month: '2-digit', year: 'numeric' });
  document.getElementById('date').value = formattedDate;
  document.getElementById('reservationForm').style.display = 'block';
}

function closeReservationForm() {
  document.getElementById('reservationForm').style.display = 'none';
}