// Bouton "Switch to the Van" du bandeau confort (choix du client)
  document.addEventListener('click', function (e) {
    if (!e.target || e.target.id !== 'switchToVan') return;
    const sed = document.getElementById('veh_sedan');
    const van = document.getElementById('veh_van');
    if (!van || van.disabled) return;
    van.checked = true;
    if (sed) sed.checked = false;
    autoUpgraded = false;
    syncVehicleSelected();
    window.calculateTotalPrice?.();
    checkLoad();
  });

  /* ---------------------------------------------------------------
     Sieges enfants : 2 offerts, puis 10 € par siege supplementaire
  --------------------------------------------------------------- */
  function updateSeatNotice() {
    const box = document.getElementById('seatNotice');
    if (!box) return;
    const cfg = window.CHILD_SEAT_FEE || { freeSeats: 2, fee: 10 };
    const qty = window.billableSeats ? window.billableSeats() : 0;
    const fee = window.childSeatFee ? window.childSeatFee() : 0;

    if (!qty) { box.className = 'notice hidden'; box.innerHTML = ''; return; }

    const totalSeats = intVal('child_seats') + intVal('booster_seats');
    box.className = 'notice notice--seat';
    box.innerHTML = '<span>You have selected <strong>' + totalSeats + ' child seats</strong>. ' +
      'The first ' + cfg.freeSeats + ' are free — <strong>€' + fee + '</strong> has been added for the ' +
      qty + ' extra seat' + (qty > 1 ? 's' : '') + ' (€' + cfg.fee + ' each).</span>';
  }

  ['luggages','child_seats','booster_seats'].forEach(function (n) {
    document.querySelector('[name="' + n + '"]')?.addEventListener('change', function () {
      checkLoad();
      window.calculateTotalPrice?.();
      updateSeatNotice();
    });
  });

  /* ---------------------------------------------------------------
     Reservation de derniere minute : supplement + explication
  --------------------------------------------------------------- */
  function updateLateNotice() {
    const box = document.getElementById('lateNotice');
    if (!box) return;
    const cfg = window.LATE_BOOKING || { hours: 12, fee: 30 };
    const fee = window.lateBookingFee ? window.lateBookingFee() : 0;

    if (!fee) { box.className = 'notice hidden'; box.innerHTML = ''; return; }

    box.className = 'notice notice--info';
    box.innerHTML = '<span>This is a short-notice booking — less than ' + cfg.hours +
      ' hours before pickup. We are in peak season and assigning a driver at that notice is difficult, ' +
      'so a <strong>€' + cfg.fee + ' short-notice fee</strong> has been added to your total. ' +
      'Booking earlier avoids it.</span>';
  }

  /* ---------------------------------------------------------------
     Trajet de nuit : 22h00 -> 05h00, +30 € par trajet concerne
  --------------------------------------------------------------- */
  function pad2(n) { return (n < 10 ? '0' : '') + n; }

  function updateNightNotice() {
    const box = document.getElementById('nightNotice');
    if (!box) return;
    const cfg  = window.NIGHT_FEE || { startHour: 22, endHour: 5, fee: 30 };
    const legs = window.nightLegs ? window.nightLegs() : 0;
    const fee  = window.nightFee  ? window.nightFee()  : 0;

    if (!legs) { box.className = 'notice hidden'; box.innerHTML = ''; return; }

    const window_ = pad2(cfg.startHour) + ':00 and ' + pad2(cfg.endHour) + ':00';
    box.className = 'notice notice--night';
    box.innerHTML = '<span>Night transfer — ' +
      (legs > 1 ? 'both your pickup and your return are' : 'your pickup is') +
      ' between ' + window_ + '. A <strong>€' + cfg.fee + ' night surcharge</strong>' +
      (legs > 1 ? ' per journey (€' + fee + ' in total)' : '') +
      ' has been added to your total.</span>';
  }

  ['pickup_date','pickup_time','return_date','return_time'].forEach(function (id) {
    document.getElementById(id)?.addEventListener('change', function () {
      window.calculateTotalPrice?.();
      updateLateNotice();
      updateNightNotice();
    });
  });

  /* ---------------------------------------------------------------
     Indicatif telephonique : on prefixe le numero avant l'envoi
  --------------------------------------------------------------- */
  document.getElementById('bookingForm')?.addEventListener('submit', function () {
    const code = document.getElementById('phone_code');
    const tel  = document.getElementById('phone');
    if (!code || !tel) return;
    let num = (tel.value || '').trim();
    if (!num) return;
    if (num.charAt(0) === '+') return;                 // deja international
    if (code.value === '+other') return;               // le client saisit tout
    num = num.replace(/^0+/, '').replace(/[\s.-]/g, '');
    tel.value = code.value + num;
  });

  document.getElementById('pickup')?.addEventListener('change', () => { toggleExtraBoxes(); window.calculateTotalPrice?.(); });
  document.getElementById('dropoff')?.addEventListener('change', () => { toggleExtraBoxes(); window.calculateTotalPrice?.(); });
  document.getElementById('passengers')?.addEventListener('change', () => { updateVehicleUI(); window.calculateTotalPrice?.(); syncVehicleSelected(); syncGroupSelected(); checkLoad(); updateSeatNotice(); });
  document.getElementById('pickup_disney_hotel')?.addEventListener('change', () => toggleOther('pickup_disney_hotel','pickupDisneyOtherBox','pickup_disney_other'));
  document.getElementById('dropoff_disney_hotel')?.addEventListener('change', () => toggleOther('dropoff_disney_hotel','dropoffDisneyOtherBox','dropoff_disney_other'));
  document.getElementById('pickup_paris_train_station')?.addEventListener('change', () => toggleOther('pickup_paris_train_station','pickupParisTrainOtherBox','pickup_paris_train_other'));
  document.getElementById('dropoff_paris_train_station')?.addEventListener('change', () => toggleOther('dropoff_paris_train_station','dropoffParisTrainOtherBox','dropoff_paris_train_other'));
  document.querySelectorAll('input[name="vehicle"], input[name="vehicle_sub"]').forEach(el => {
    el.addEventListener('change', () => { autoUpgraded = false; window.calculateTotalPrice?.(); syncVehicleSelected(); syncGroupSelected(); checkLoad(); });
  });
  document.addEventListener('change', e => {
    if (e.target?.matches('input[name="vehicle"]')) syncVehicleSelected();
    if (e.target?.matches('input[name="vehicle_sub"]')) { syncGroupSelected(); const v = document.getElementById('vehicle_sub'); if (v) v.value = e.target.value; }
  });

  // INIT
  toggleExtraBoxes();
  toggleOther('pickup_disney_hotel','pickupDisneyOtherBox','pickup_disney_other');
  toggleOther('dropoff_disney_hotel','dropoffDisneyOtherBox','dropoff_disney_other');
  toggleOther('pickup_paris_train_station','pickupParisTrainOtherBox','pickup_paris_train_other');
  toggleOther('dropoff_paris_train_station','dropoffParisTrainOtherBox','dropoff_paris_train_other');