(function () {
    'use strict';

    var REST_URL = (window.careiReservation && window.careiReservation.restUrl) || '/wp-json/carei/v1/';
    var NONCE = (window.careiReservation && window.careiReservation.nonce) || '';

    // ─── API Helpers ──────────────────────────────────────────────

    var API_TIMEOUT_MS = 15000;

    function apiGet(endpoint, isRetry) {
        var controller = new AbortController();
        var timer = setTimeout(function () { controller.abort(); }, API_TIMEOUT_MS);
        return fetch(REST_URL + endpoint, {
            method: 'GET',
            headers: { 'X-WP-Nonce': NONCE, 'Content-Type': 'application/json' },
            signal: controller.signal
        }).then(function (r) {
            clearTimeout(timer);
            return handleResponse(r);
        }).catch(function (err) {
            clearTimeout(timer);
            return handleFetchError(err, function () { return apiGet(endpoint, true); }, isRetry);
        });
    }

    function apiPost(endpoint, data, isRetry) {
        var controller = new AbortController();
        var timer = setTimeout(function () { controller.abort(); }, API_TIMEOUT_MS);
        return fetch(REST_URL + endpoint, {
            method: 'POST',
            headers: { 'X-WP-Nonce': NONCE, 'Content-Type': 'application/json' },
            body: JSON.stringify(data),
            signal: controller.signal
        }).then(function (r) {
            clearTimeout(timer);
            if ((r.status === 401 || r.status === 403) && !isRetry) {
                return apiPost(endpoint, data, true);
            }
            return handleResponse(r);
        }).catch(function (err) {
            clearTimeout(timer);
            return handleFetchError(err, function () { return apiPost(endpoint, data, true); }, isRetry);
        });
    }

    function handleResponse(r) {
        if (!r.ok) {
            var status = r.status;
            return r.json().then(function (body) {
                var msg = (body && body.message) || (body && body.detail) || ('Błąd API: HTTP ' + status);
                var err = new Error(msg);
                err.httpStatus = status;
                throw err;
            }).catch(function (parseErr) {
                if (parseErr.httpStatus) throw parseErr;
                var err = new Error('Błąd API: HTTP ' + status);
                err.httpStatus = status;
                throw err;
            });
        }
        return r.json();
    }

    function handleFetchError(err, retryFn, isRetry) {
        if (err.name === 'AbortError') {
            throw new Error('Przekroczono czas oczekiwania. Spróbuj ponownie.');
        }
        if (err instanceof TypeError && !isRetry) {
            return retryFn();
        }
        if (err instanceof TypeError) {
            throw new Error('Brak połączenia z serwerem. Sprawdź internet i spróbuj ponownie.');
        }
        throw err;
    }

    // ─── DOM Refs ─────────────────────────────────────────────────

    var overlay, form, segmentSelect, dateFrom, dateTo, daysCount;
    var pickupSelect, returnSelect, returnWrap, sameReturnCheck;
    var extrasWrapper, extrasContainer, insuranceContainer, abroadSection, abroadToggle, abroadSearch, abroadInput, abroadResults, abroadSelected, errorSummary;
    var summaryOverlay, summaryDetails, summaryTable, summaryTotal, summaryError;
    var summaryBack, summaryConfirm;
    var successView, successNumber, successClose;

    function initRefs() {
        overlay = document.querySelector('[data-carei-modal]');
        form = document.getElementById('carei-reservation-form');
        segmentSelect = document.getElementById('carei-segment');
        dateFrom = document.getElementById('carei-date-from');
        dateTo = document.getElementById('carei-date-to');
        daysCount = document.getElementById('carei-days-count');
        pickupSelect = document.getElementById('carei-pickup-branch');
        returnSelect = document.getElementById('carei-return-branch');
        returnWrap = document.getElementById('carei-return-wrap');
        sameReturnCheck = document.getElementById('carei-same-return');
        extrasWrapper = document.getElementById('carei-extras-wrapper');
        extrasContainer = document.getElementById('carei-extras-container');
        insuranceContainer = document.getElementById('carei-insurance-container');
        abroadSection = document.getElementById('carei-abroad-section');
        abroadToggle = document.getElementById('carei-abroad-toggle');
        abroadSearch = document.getElementById('carei-abroad-search');
        abroadInput = document.getElementById('carei-abroad-input');
        abroadResults = document.getElementById('carei-abroad-results');
        abroadSelected = document.getElementById('carei-abroad-selected');
        errorSummary = document.getElementById('carei-error-summary');
        // Summary overlay
        summaryOverlay = document.getElementById('carei-summary-overlay');
        summaryDetails = document.getElementById('carei-summary-details');
        summaryTable = document.getElementById('carei-summary-table');
        summaryTotal = document.getElementById('carei-summary-total');
        summaryError = document.getElementById('carei-summary-error');
        summaryBack = document.getElementById('carei-summary-back');
        summaryConfirm = document.getElementById('carei-summary-confirm');
        // Success view
        successView = document.getElementById('carei-success-view');
        successNumber = document.getElementById('carei-success-number');
        successClose = document.getElementById('carei-success-close');
    }

    // ─── State ────────────────────────────────────────────────────

    var mapData = null;
    var allSegments = [];
    var currentPriceListId = null;
    var currentCustomerId = null;
    var currentReservationId = null;
    var agreementDefs = [];
    var lastFocusedElement = null;
    var abroadItems = [];
    var selectedCountries = {};

    // ─── Modal Open/Close ─────────────────────────────────────────

    function initModal() {
        document.querySelectorAll('[data-carei-open-modal]').forEach(function (btn) {
            btn.addEventListener('click', function (e) {
                e.preventDefault();
                openModal(btn);
            });
        });
        document.querySelectorAll('[data-carei-close-modal]').forEach(function (btn) {
            btn.addEventListener('click', closeModal);
        });
        if (overlay) {
            overlay.addEventListener('click', function (e) {
                if (e.target === overlay) closeModal();
            });
            overlay.addEventListener('keydown', handleFocusTrap);
        }
        document.addEventListener('keydown', function (e) {
            if (e.key === 'Escape' && overlay && overlay.classList.contains('is-open')) closeModal();
        });
    }

    var dataLoaded = false;

    function openModal(triggerBtn) {
        if (!overlay) return;
        lastFocusedElement = triggerBtn || document.activeElement;
        overlay.classList.add('is-open');
        document.body.style.overflow = 'hidden';
        if (!dataLoaded) {
            loadInitialData();
            initDateLabels();
            dataLoaded = true;
        }

        // Pre-select segment from trigger attribute
        var presetSegment = triggerBtn && triggerBtn.getAttribute('segment');
        if (presetSegment && segmentSelect) {
            var trySet = function () {
                if (segmentSelect.querySelector('option[value="' + presetSegment + '"]')) {
                    segmentSelect.value = presetSegment;
                    segmentSelect.dispatchEvent(new Event('change'));
                    return true;
                }
                return false;
            };
            if (!trySet()) {
                var attempts = 0;
                var iv = setInterval(function () {
                    if (trySet() || ++attempts > 20) clearInterval(iv);
                }, 100);
            }
        }

        setTimeout(function () {
            if (segmentSelect) segmentSelect.focus();
        }, 350);
    }

    function closeModal() {
        if (!overlay) return;
        overlay.classList.remove('is-open');
        document.body.style.overflow = '';
        if (lastFocusedElement && lastFocusedElement.focus) {
            setTimeout(function () { lastFocusedElement.focus(); }, 300);
        }
    }

    // ─── Focus Trap ─────────────────────────────────────────────

    var FOCUSABLE_SELECTOR = 'a[href], button:not([disabled]), textarea:not([disabled]), input:not([disabled]):not([type="hidden"]), select:not([disabled]), [tabindex]:not([tabindex="-1"])';

    function handleFocusTrap(e) {
        if (e.key !== 'Tab') return;
        var modal = overlay.querySelector('.carei-modal');
        if (!modal) return;
        var focusable = Array.prototype.slice.call(modal.querySelectorAll(FOCUSABLE_SELECTOR)).filter(function (el) {
            return el.offsetParent !== null;
        });
        if (focusable.length === 0) return;
        var first = focusable[0];
        var last = focusable[focusable.length - 1];
        if (e.shiftKey) {
            if (document.activeElement === first) { e.preventDefault(); last.focus(); }
        } else {
            if (document.activeElement === last) { e.preventDefault(); first.focus(); }
        }
    }

    // ─── Initial Data Loading ─────────────────────────────────────

    function loadInitialData() {
        if (segmentSelect) setSelectLoading(segmentSelect, true);

        Promise.all([
            apiGet('car-classes-all'),
            apiGet('segments-branches-map'),
            apiGet('agreements')
        ]).then(function (results) {
            var classes = results[0];
            mapData = results[1];
            agreementDefs = Array.isArray(results[2]) ? results[2] : [];

            if (Array.isArray(classes) && classes.length > 0) {
                allSegments = classes.map(function (c) {
                    var val = typeof c === 'string' ? c : (c.name || c);
                    var label = typeof c === 'string' ? ('Segment ' + c) : (c.description || c.name || c);
                    return { value: val, label: label };
                });
                populateSelect(segmentSelect, allSegments, 'Wybierz segment pojazdu');
            } else {
                populateSelect(segmentSelect, [], 'Brak segmentów');
            }
            if (segmentSelect) setSelectLoading(segmentSelect, false);

            if (pickupSelect) {
                populateSelect(pickupSelect, [], 'Najpierw wybierz segment');
                pickupSelect.disabled = true;
            }
        }).catch(function (err) {
            console.error('Failed to load initial data:', err);
            if (segmentSelect) {
                populateSelect(segmentSelect, [], 'Błąd ładowania');
                setSelectLoading(segmentSelect, false);
            }
        });
    }

    // ─── Segment Change → Filter Pickup Locations ─────────────────

    function onSegmentChange() {
        var selectedSegment = segmentSelect ? segmentSelect.value : '';
        if (!selectedSegment || !mapData || !pickupSelect) {
            if (pickupSelect) { populateSelect(pickupSelect, [], 'Najpierw wybierz segment'); pickupSelect.disabled = true; }
            hideExtras();
            return;
        }
        var segBranches = mapData.segmentToBranches[selectedSegment] || [];
        var allBranches = mapData.branches || [];
        var filteredOptions = [];
        allBranches.forEach(function (b) {
            if (segBranches.indexOf(b.name || '') !== -1) {
                var label = b.description || b.name;
                if (b.city) label += ' — ' + b.city;
                filteredOptions.push({ value: b.name, label: label });
            }
        });
        if (filteredOptions.length > 0) {
            populateSelect(pickupSelect, filteredOptions, 'Miejsce odbioru');
            pickupSelect.disabled = false;
        } else {
            populateSelect(pickupSelect, [], 'Brak lokalizacji dla tego segmentu');
            pickupSelect.disabled = true;
        }
        if (returnSelect) {
            var returnOptions = allBranches.map(function (b) {
                var label = b.description || b.name;
                if (b.city) label += ' — ' + b.city;
                return { value: b.name, label: label };
            });
            populateSelect(returnSelect, returnOptions, 'Miejsce zwrotu');
        }
        hideExtras();
    }

    function onPickupChange() {
        maybeShowExtras();
    }

    function maybeShowExtras() {
        var segment = segmentSelect ? segmentSelect.value : '';
        var pickup = pickupSelect ? pickupSelect.value : '';
        var from = dateFrom ? dateFrom.value : '';
        var to = dateTo ? dateTo.value : '';
        if (segment && pickup && from && to) { showExtras(); loadExtras(); } else { hideExtras(); }
    }

    function showExtras() { if (extrasWrapper) extrasWrapper.style.display = ''; }
    function hideExtras() { if (extrasWrapper) extrasWrapper.style.display = 'none'; }

    // ─── Date Labels ──────────────────────────────────────────────

    function initDateLabels() {
        [dateFrom, dateTo].forEach(function (input) {
            if (!input) return;
            updateDateEmpty(input);
            input.addEventListener('change', function () { updateDateEmpty(input); updateDaysCount(); });
            input.addEventListener('input', function () { updateDateEmpty(input); });
        });
    }

    function updateDateEmpty(input) {
        var wrap = input.closest('.carei-form__date-wrap');
        if (input.value) {
            input.classList.remove('is-empty');
            if (wrap) wrap.classList.add('has-value');
        } else {
            input.classList.add('is-empty');
            if (wrap) wrap.classList.remove('has-value');
        }
    }

    function pad(n) { return String(n).padStart(2, '0'); }

    // ─── Days Count ───────────────────────────────────────────────

    function getRentalDays() {
        if (!dateFrom || !dateTo) return 1;
        var from = new Date(dateFrom.value), to = new Date(dateTo.value);
        if (isNaN(from.getTime()) || isNaN(to.getTime()) || to <= from) return 1;
        return Math.ceil((to - from) / 86400000);
    }

    function updateDaysCount() {
        if (!dateFrom || !dateTo || !daysCount) return;
        var from = new Date(dateFrom.value), to = new Date(dateTo.value);
        if (isNaN(from.getTime()) || isNaN(to.getTime()) || to <= from) {
            daysCount.innerHTML = 'Wybrano: <strong>0 dni</strong>'; return;
        }
        var diff = Math.ceil((to - from) / 86400000);
        daysCount.innerHTML = 'Wybrano: <strong>' + diff + ' ' + (diff === 1 ? 'dzień' : 'dni') + '</strong>';
    }

    // ─── Load Extras from Pricelist ───────────────────────────────

    function loadExtras() {
        if (!segmentSelect || !dateFrom || !dateTo || !pickupSelect) return;
        var category = segmentSelect.value, fromVal = dateFrom.value, toVal = dateTo.value, branch = pickupSelect.value;
        if (!category || !fromVal || !toVal || !branch) return;

        apiPost('pricelist', {
            category: category, dateFrom: fromVal + ':00', dateTo: toVal + ':00', pickUpLocation: branch
        }).then(function (pricelists) {
            if (!Array.isArray(pricelists) || pricelists.length === 0) return;
            var pricelist = pricelists[0];
            currentPriceListId = pricelist.id;
            var items = pricelist.additionalItems;
            var insuranceItems = [], extraItems = [];
            abroadItems = [];
            selectedCountries = {};
            if (Array.isArray(items)) {
                items.forEach(function (item) {
                    var name = (item.name || '').toLowerCase();
                    // Skip penalty/return items
                    var code = (item.code || '').toUpperCase();
                    if (code.indexOf('BRAK') === 0 || code.indexOf('BRUD') === 0 || code.indexOf('KARA') === 0 ||
                        code.indexOf('MYCIE USŁU') === 0 || code === 'MYJ WEW') return;
                    if (name.indexOf('wyjazd za granic') !== -1) {
                        item._countryName = parseCountryName(item.name);
                        item._countryFlag = getCountryFlag(item._countryName);
                        abroadItems.push(item);
                    } else if (name.indexOf('ubezp') !== -1 || name.indexOf('ochrony') !== -1 ||
                        name.indexOf('zniesienie') !== -1 || name.indexOf('insurance') !== -1) {
                        insuranceItems.push(item);
                    } else {
                        extraItems.push(item);
                    }
                });
            }
            if (insuranceContainer) { insuranceContainer.innerHTML = ''; insuranceItems.forEach(function (item) { insuranceContainer.appendChild(buildExtraCard(item)); }); }
            if (extrasContainer) { extrasContainer.innerHTML = ''; extraItems.forEach(function (item) { extrasContainer.appendChild(buildExtraCard(item)); }); }
            if (abroadSection) { abroadSection.style.display = abroadItems.length > 0 ? '' : 'none'; }
            renderAbroadSelected();
        }).catch(function (err) { console.error('Failed to load pricelist:', err); });
    }

    function buildExtraCard(item) {
        var price = parseFloat(item.price || item.minPrice || 0);
        var maxPrice = parseFloat(item.maxPrice || 0);
        var priceLabel = (maxPrice > 0 && maxPrice !== price)
            ? 'od ' + price.toFixed(0) + ' do ' + maxPrice.toFixed(0) + ' zł'
            : (price > 0 ? price.toFixed(0) + ' zł' + (item.unit === 'doba' ? '/doba' : '') : 'Gratis');
        var card = document.createElement('div');
        card.className = 'carei-form__extra-card';
        card.innerHTML =
            '<label class="carei-form__checkbox-label carei-form__checkbox-label--card">' +
            '<input type="checkbox" name="extras[]" value="' + escAttr(item.id || item.code) + '" data-price="' + price + '" data-name="' + escAttr(toSentenceCase(item.name)) + '" data-unit="' + escAttr(item.unit || 'szt.') + '">' +
            '<span class="carei-form__checkbox-box"><svg width="14" height="14" viewBox="0 0 14 14" fill="none"><path d="M2 7l3.5 3.5L12 4" stroke="#fff" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/></svg></span>' +
            '<span class="carei-form__extra-content"><strong>' + escHtml(toSentenceCase(item.name)) + '</strong>' +
            (item.description ? '<span class="carei-form__extra-desc">' + escHtml(toSentenceCase(item.description)) + '</span>' : '') +
            '<span class="carei-form__extra-price"><strong>' + escHtml(priceLabel) + '</strong></span></span></label>';
        return card;
    }

    // ─── Abroad Country Search ─────────────────────────────────────

    var COUNTRY_FLAGS = {
        'niemcy': '\u{1F1E9}\u{1F1EA}', 'czechy': '\u{1F1E8}\u{1F1FF}', 'słowacja': '\u{1F1F8}\u{1F1F0}',
        'austria': '\u{1F1E6}\u{1F1F9}', 'francja': '\u{1F1EB}\u{1F1F7}', 'włochy': '\u{1F1EE}\u{1F1F9}',
        'hiszpania': '\u{1F1EA}\u{1F1F8}', 'holandia': '\u{1F1F3}\u{1F1F1}', 'belgia': '\u{1F1E7}\u{1F1EA}',
        'dania': '\u{1F1E9}\u{1F1F0}', 'szwecja': '\u{1F1F8}\u{1F1EA}', 'norwegia': '\u{1F1F3}\u{1F1F4}',
        'finlandia': '\u{1F1EB}\u{1F1EE}', 'szwajcaria': '\u{1F1E8}\u{1F1ED}', 'węgry': '\u{1F1ED}\u{1F1FA}',
        'chorwacja': '\u{1F1ED}\u{1F1F7}', 'słowenia': '\u{1F1F8}\u{1F1EE}', 'litwa': '\u{1F1F1}\u{1F1F9}',
        'łotwa': '\u{1F1F1}\u{1F1FB}', 'estonia': '\u{1F1EA}\u{1F1EA}', 'rumunia': '\u{1F1F7}\u{1F1F4}',
        'bułgaria': '\u{1F1E7}\u{1F1EC}', 'portugalia': '\u{1F1F5}\u{1F1F9}', 'grecja': '\u{1F1EC}\u{1F1F7}',
        'wielka brytania': '\u{1F1EC}\u{1F1E7}', 'irlandia': '\u{1F1EE}\u{1F1EA}', 'luksemburg': '\u{1F1F1}\u{1F1FA}',
        'serbia': '\u{1F1F7}\u{1F1F8}', 'czarnogóra': '\u{1F1F2}\u{1F1EA}', 'albania': '\u{1F1E6}\u{1F1F1}',
        'turcja': '\u{1F1F9}\u{1F1F7}', 'ukraina': '\u{1F1FA}\u{1F1E6}', 'mołdawia': '\u{1F1F2}\u{1F1E9}'
    };

    function parseCountryName(name) {
        var raw = (name || '').replace(/wyjazd za granic[eę]\s*[-–—]?\s*/i, '').trim();
        if (!raw) return name || '';
        return raw.split(/\s+/).map(function (w) {
            return w.charAt(0).toUpperCase() + w.slice(1).toLowerCase();
        }).join(' ');
    }

    function getCountryFlag(countryName) {
        var key = (countryName || '').toLowerCase();
        return COUNTRY_FLAGS[key] || '\u{1F3F3}\u{FE0F}';
    }

    function initAbroad() {
        if (!abroadToggle || !abroadSearch) return;
        abroadToggle.addEventListener('change', function () {
            if (abroadToggle.checked) {
                abroadSearch.style.display = '';
            } else {
                abroadSearch.style.display = 'none';
                selectedCountries = {};
                if (abroadInput) abroadInput.value = '';
                renderAbroadResults([]);
                renderAbroadSelected();
            }
        });
        var abroadClear = document.getElementById('carei-abroad-clear');
        if (abroadInput) {
            abroadInput.addEventListener('input', function () {
                updateAbroadClear();
                var query = abroadInput.value.trim().toLowerCase();
                if (!query) { renderAbroadResults([]); return; }
                var filtered = abroadItems.filter(function (item) {
                    return item._countryName.toLowerCase().indexOf(query) !== -1;
                });
                renderAbroadResults(filtered);
            });
            abroadInput.addEventListener('focus', function () {
                var query = abroadInput.value.trim().toLowerCase();
                if (query) {
                    var filtered = abroadItems.filter(function (item) {
                        return item._countryName.toLowerCase().indexOf(query) !== -1;
                    });
                    renderAbroadResults(filtered);
                }
            });
        }
        if (abroadClear) {
            abroadClear.addEventListener('click', function () {
                if (abroadInput) { abroadInput.value = ''; abroadInput.focus(); }
                renderAbroadResults([]);
                updateAbroadClear();
            });
        }

        function updateAbroadClear() {
            var wrap = abroadInput ? abroadInput.closest('.carei-abroad__input-wrap') : null;
            if (wrap) {
                if (abroadInput.value.trim()) { wrap.classList.add('has-text'); }
                else { wrap.classList.remove('has-text'); }
            }
        }
    }

    function renderAbroadResults(items) {
        if (!abroadResults) return;
        abroadResults.innerHTML = '';
        if (!items || items.length === 0) return;
        items.forEach(function (item) {
            var id = item.id || item.code;
            var isSelected = !!selectedCountries[id];
            abroadResults.appendChild(buildCountryCard(item, isSelected));
        });
    }

    function renderAbroadSelected() {
        if (!abroadSelected) return;
        abroadSelected.innerHTML = '';
        var keys = Object.keys(selectedCountries);
        if (keys.length === 0) return;
        keys.forEach(function (id) {
            var item = selectedCountries[id];
            abroadSelected.appendChild(buildCountryCard(item, true));
        });
    }

    function buildCountryCard(item, isSelected) {
        var id = item.id || item.code;
        var price = parseFloat(item.price || item.minPrice || 0);
        var priceHtml = '<span class="carei-abroad__price-val">' + (price > 0 ? price.toFixed(0) + ' zł' : 'Gratis') + '</span>';

        var card = document.createElement('div');
        card.className = 'carei-abroad__card' + (isSelected ? ' carei-abroad__card--selected' : '');
        card.innerHTML =
            '<span class="carei-abroad__flag">' + escHtml(item._countryFlag) + '</span>' +
            '<span class="carei-abroad__name">' + escHtml(item._countryName) + '</span>' +
            '<span class="carei-abroad__price">' + priceHtml + '</span>' +
            '<span role="button" tabindex="0" class="carei-abroad__action" data-abroad-id="' + escAttr(id) + '" title="' + (isSelected ? 'Usuń' : 'Dodaj') + '">' +
            (isSelected
                ? '<svg width="14" height="14" viewBox="0 0 14 14" fill="none"><path d="M3 3l8 8M11 3l-8 8" stroke="currentColor" stroke-width="2" stroke-linecap="round"/></svg>'
                : '<svg width="14" height="14" viewBox="0 0 14 14" fill="none"><path d="M7 2v10M2 7h10" stroke="currentColor" stroke-width="2" stroke-linecap="round"/></svg>'
            ) + '</span>';

        card.querySelector('.carei-abroad__action').addEventListener('click', function (e) {
            e.preventDefault();
            if (selectedCountries[id]) {
                delete selectedCountries[id];
            } else {
                selectedCountries[id] = item;
            }
            var query = abroadInput ? abroadInput.value.trim().toLowerCase() : '';
            if (query) {
                var filtered = abroadItems.filter(function (it) {
                    return it._countryName.toLowerCase().indexOf(query) !== -1;
                });
                renderAbroadResults(filtered);
            } else {
                renderAbroadResults([]);
            }
            renderAbroadSelected();
        });

        return card;
    }

    // ─── Select Helpers ───────────────────────────────────────────

    function populateSelect(select, options, placeholder) {
        if (!select) return;
        select.innerHTML = '';
        var ph = document.createElement('option');
        ph.value = ''; ph.disabled = true; ph.selected = true; ph.textContent = placeholder || 'Wybierz...';
        select.appendChild(ph);
        options.forEach(function (opt) {
            var o = document.createElement('option');
            o.value = opt.value; o.textContent = opt.label; select.appendChild(o);
        });
    }

    function setSelectLoading(select, loading) {
        if (!select) return;
        var wrap = select.closest('.carei-form__select-wrap');
        if (wrap) wrap.classList.toggle('carei-form__select-wrap--loading', loading);
    }

    // ─── Same Return Location ─────────────────────────────────────

    function initSameReturn() {
        if (!sameReturnCheck || !returnWrap) return;
        sameReturnCheck.addEventListener('change', function () {
            returnWrap.classList.toggle('is-visible', !sameReturnCheck.checked);
        });
    }

    // ─── Validation ───────────────────────────────────────────────

    var requiredFields = [
        { id: 'carei-segment', type: 'select', msg: 'Wybierz segment pojazdu' },
        { id: 'carei-date-from', type: 'input', msg: 'Podaj datę rozpoczęcia' },
        { id: 'carei-date-to', type: 'input', msg: 'Podaj datę zakończenia' },
        { id: 'carei-pickup-branch', type: 'select', msg: 'Wybierz miejsce odbioru' },
        { id: 'carei-firstname', type: 'input', msg: 'Podaj imię' },
        { id: 'carei-lastname', type: 'input', msg: 'Podaj nazwisko' },
        { id: 'carei-city', type: 'input', msg: 'Podaj miejscowość' },
        { id: 'carei-zipcode', type: 'input', msg: 'Podaj kod pocztowy' },
        { id: 'carei-street', type: 'input', msg: 'Podaj ulicę' },
        { id: 'carei-email', type: 'email', msg: 'Podaj poprawny adres e-mail' },
        { id: 'carei-phone', type: 'phone', msg: 'Podaj numer telefonu (min. 9 cyfr)' },
        { id: 'carei-pesel', type: 'pesel', msg: 'Podaj poprawny PESEL (11 cyfr)' },
        { id: 'carei-privacy', type: 'checkbox', msg: 'Wymagana zgoda na Politykę Prywatności' }
    ];

    function validateForm() {
        var valid = true;
        form.querySelectorAll('.carei-form__field--error').forEach(function (el) { el.classList.remove('carei-form__field--error'); });
        form.querySelectorAll('.carei-form__checkbox-label--error').forEach(function (el) { el.classList.remove('carei-form__checkbox-label--error'); });
        form.querySelectorAll('.carei-form__error-msg').forEach(function (el) { el.remove(); });

        requiredFields.forEach(function (f) {
            var el = document.getElementById(f.id);
            if (!el) return;
            var hasError = false;
            if (f.type === 'checkbox') { if (!el.checked) hasError = true; }
            else if (f.type === 'email') { if (!el.value.trim() || !/^[^\s@]+@[^\s@]+\.[^\s@]+$/.test(el.value.trim())) hasError = true; }
            else if (f.type === 'phone') { if (el.value.replace(/\D/g, '').length < 9) hasError = true; }
            else if (f.type === 'pesel') { if (!/^\d{11}$/.test(el.value.trim())) hasError = true; }
            else if (f.type === 'select') { if (!el.value) hasError = true; }
            else { if (!el.value.trim()) hasError = true; }
            if (hasError) { valid = false; markFieldError(el, f.msg, f.type); }
        });

        if (dateFrom && dateTo && dateFrom.value && dateTo.value) {
            if (new Date(dateTo.value) <= new Date(dateFrom.value)) {
                valid = false; markFieldError(dateTo, 'Data zakończenia musi być po dacie rozpoczęcia', 'input');
            }
        }
        if (sameReturnCheck && !sameReturnCheck.checked && returnSelect && !returnSelect.value) {
            valid = false; markFieldError(returnSelect, 'Wybierz miejsce zwrotu', 'select');
        }
        if (errorSummary) errorSummary.style.display = valid ? 'none' : 'block';
        return valid;
    }

    function markFieldError(el, msg, type) {
        if (type === 'checkbox') {
            var label = el.closest('.carei-form__checkbox-label');
            if (label) label.classList.add('carei-form__checkbox-label--error');
        } else {
            var field = el.closest('.carei-form__field');
            if (!field) { field = el.closest('.carei-form__phone-wrap'); if (field) field = field.closest('.carei-form__field'); }
            if (field) {
                field.classList.add('carei-form__field--error');
                var errEl = document.createElement('span');
                errEl.className = 'carei-form__error-msg'; errEl.textContent = msg;
                field.appendChild(errEl);
            }
        }
    }

    function initClearErrors() {
        if (!form) return;
        form.addEventListener('focusin', function (e) {
            var field = e.target.closest('.carei-form__field');
            if (field && field.classList.contains('carei-form__field--error')) {
                field.classList.remove('carei-form__field--error');
                var errMsg = field.querySelector('.carei-form__error-msg'); if (errMsg) errMsg.remove();
            }
            var label = e.target.closest('.carei-form__checkbox-label');
            if (label) label.classList.remove('carei-form__checkbox-label--error');
        });
        form.addEventListener('change', function (e) {
            if (e.target.type === 'checkbox') {
                var label = e.target.closest('.carei-form__checkbox-label');
                if (label) label.classList.remove('carei-form__checkbox-label--error');
            }
        });
    }

    // ─── Form Submit → Booking Flow ───────────────────────────────

    function initSubmit() {
        if (!form) return;
        form.addEventListener('submit', function (e) {
            e.preventDefault();
            if (!validateForm()) return;
            setSubmitState('loading');
            createCustomerAndShowSummary();
        });

        if (summaryBack) summaryBack.addEventListener('click', handleSummaryBack);
        if (summaryConfirm) summaryConfirm.addEventListener('click', handleSummaryConfirm);
        if (successClose) successClose.addEventListener('click', handleSuccessClose);
    }

    function setSubmitState(state) {
        var btn = form ? form.querySelector('.carei-form__submit') : null;
        if (!btn) return;
        if (state === 'loading') {
            btn.disabled = true;
            btn.setAttribute('aria-busy', 'true');
            btn.innerHTML = '<svg width="16" height="16" viewBox="0 0 24 24" fill="currentColor"><path d="M2.01 21L23 12 2.01 3 2 10l15 2-15 2z"/></svg> Przetwarzanie...';
        } else {
            btn.disabled = false;
            btn.setAttribute('aria-busy', 'false');
            btn.innerHTML = '<svg width="16" height="16" viewBox="0 0 24 24" fill="currentColor"><path d="M2.01 21L23 12 2.01 3 2 10l15 2-15 2z"/></svg> Wyślij';
        }
    }

    function collectFormData() {
        var phoneRaw = document.getElementById('carei-phone') ? document.getElementById('carei-phone').value.replace(/\D/g, '') : '';
        return {
            segment: segmentSelect ? segmentSelect.value : '',
            dateFrom: dateFrom ? dateFrom.value : '',
            dateTo: dateTo ? dateTo.value : '',
            pickupBranch: pickupSelect ? pickupSelect.value : '',
            sameReturn: sameReturnCheck ? sameReturnCheck.checked : true,
            returnBranch: (sameReturnCheck && !sameReturnCheck.checked && returnSelect) ? returnSelect.value : '',
            firstName: val('carei-firstname'),
            lastName: val('carei-lastname'),
            city: val('carei-city'),
            zipCode: val('carei-zipcode'),
            street: val('carei-street'),
            email: val('carei-email'),
            phone: '+48' + phoneRaw,
            pesel: val('carei-pesel'),
            message: val('carei-message'),
            privacy: document.getElementById('carei-privacy') ? document.getElementById('carei-privacy').checked : false
        };
    }

    function val(id) { var el = document.getElementById(id); return el ? el.value.trim() : ''; }

    // ─── Step 1: Create Customer ──────────────────────────────────

    function createCustomerAndShowSummary() {
        var fd = collectFormData();
        hideSummaryError();
        announce('Ładowanie podsumowania...');

        apiPost('customer', {
            firstName: fd.firstName,
            lastName: fd.lastName,
            name: fd.firstName + ' ' + fd.lastName,
            isCompany: false,
            address: { city: fd.city, zipCode: fd.zipCode, street: fd.street, homeNo: '-' },
            pesel: fd.pesel,
            email: fd.email,
            phoneMobile: fd.phone,
            paymentMethod: 'GOTÓWKA',
            skipAccountCreate: true,
            emailVerified: true
        }).then(function (res) {
            if (res && res.customerId) {
                currentCustomerId = res.customerId;
                return loadPricingSummary(fd);
            }
            throw new Error(res.rejectReason || 'Nie udało się utworzyć klienta');
        }).catch(function (err) {
            console.error('Customer creation failed:', err);
            setSubmitState('ready');
            showFormError('Błąd tworzenia klienta: ' + err.message);
        });
    }

    // ─── Step 2: Pricing Summary ──────────────────────────────────

    function loadPricingSummary(fd) {
        var returnBranch = fd.sameReturn ? fd.pickupBranch : fd.returnBranch;

        return apiPost('pricing-summary', {
            dateFrom: fd.dateFrom + ':00',
            dateTo: fd.dateTo + ':00',
            customerId: currentCustomerId,
            pickUpLocation: { branchName: fd.pickupBranch, outOfBranch: 'N' },
            returnLocation: { branchName: returnBranch, outOfBranch: 'N' },
            carParameters: { categoryName: fd.segment },
            priceListId: currentPriceListId,
            priceItems: getSelectedExtrasForApi()
        }).then(function (summary) {
            showSummaryOverlay(summary, fd);
        }).catch(function (err) {
            console.error('Pricing summary failed:', err);
            setSubmitState('ready');
            showFormError('Błąd pobierania podsumowania: ' + err.message);
        });
    }

    function getSelectedExtrasForApi() {
        var items = [];
        if (!form) return items;
        var days = getRentalDays();
        form.querySelectorAll('input[name="extras[]"]:checked').forEach(function (cb) {
            var price = parseFloat(cb.getAttribute('data-price') || 0);
            var unit = cb.getAttribute('data-unit') || 'szt.';
            var amount = unit === 'doba' ? days : 1;
            items.push({
                id: cb.value,
                name: cb.getAttribute('data-name') || '',
                unit: unit,
                amount: amount,
                priceBeforeDiscount: price,
                discount: 0,
                priceAfterDiscount: price
            });
        });
        Object.keys(selectedCountries).forEach(function (id) {
            var item = selectedCountries[id];
            var price = parseFloat(item.price || item.minPrice || 0);
            var unit = item.unit || 'szt.';
            var amount = unit === 'doba' ? days : 1;
            items.push({
                id: item.id || item.code,
                name: item.name,
                unit: unit,
                amount: amount,
                priceBeforeDiscount: price,
                discount: 0,
                priceAfterDiscount: price
            });
        });
        return items;
    }

    // ─── Step Transitions ──────────────────────────────────────────

    function hideStep(el) {
        if (!el) return;
        el.style.display = 'none';
        el.classList.remove('carei-step--entering', 'carei-step--exiting');
    }

    function showStep(el) {
        if (!el) return;
        el.style.display = '';
        el.classList.remove('carei-step--hidden');
    }

    function transitionStep(outEl, inEl, callback) {
        if (outEl) {
            outEl.classList.add('carei-step--exiting');
            setTimeout(function () {
                hideStep(outEl);
                if (inEl) {
                    inEl.classList.add('carei-step--entering');
                    showStep(inEl);
                    requestAnimationFrame(function () {
                        requestAnimationFrame(function () {
                            inEl.classList.remove('carei-step--entering');
                            if (callback) callback();
                        });
                    });
                } else if (callback) { callback(); }
            }, 250);
        } else if (inEl) {
            inEl.classList.add('carei-step--entering');
            showStep(inEl);
            requestAnimationFrame(function () {
                requestAnimationFrame(function () {
                    inEl.classList.remove('carei-step--entering');
                    if (callback) callback();
                });
            });
        }
    }

    // ─── Step 3: Show Summary Overlay ─────────────────────────────

    function showSummaryOverlay(summary, fd) {
        if (!summaryOverlay) return;

        hideSummaryError();

        // Populate content before transition
        populateSummaryContent(summary, fd);

        // Animated transition: form → summary
        transitionStep(form, summaryOverlay, function () {
            announce('Podsumowanie rezerwacji');
            var title = summaryOverlay.querySelector('.carei-summary__title');
            if (title) title.focus();
        });
    }

    function populateSummaryContent(summary, fd) {
        // Details
        if (summaryDetails) {
            var segLabel = segmentSelect ? segmentSelect.options[segmentSelect.selectedIndex].text : fd.segment;
            var pickupLabel = pickupSelect ? pickupSelect.options[pickupSelect.selectedIndex].text : fd.pickupBranch;
            var returnLabel = '';
            if (!fd.sameReturn && returnSelect) {
                returnLabel = returnSelect.options[returnSelect.selectedIndex].text;
            }
            var html =
                '<div><strong>Segment:</strong> ' + escHtml(segLabel) + '</div>' +
                '<div><strong>Od:</strong> ' + escHtml(fd.dateFrom.replace('T', ' ')) + '</div>' +
                '<div><strong>Do:</strong> ' + escHtml(fd.dateTo.replace('T', ' ')) + '</div>' +
                '<div><strong>Miejsce odbioru:</strong> ' + escHtml(pickupLabel) + '</div>';
            if (returnLabel) {
                html += '<div><strong>Miejsce zwrotu:</strong> ' + escHtml(returnLabel) + '</div>';
            }
            html += '<div><strong>Najemca:</strong> ' + escHtml(fd.firstName + ' ' + fd.lastName) + '</div>' +
                '<div><strong>Email:</strong> ' + escHtml(fd.email) + '</div>' +
                '<div><strong>Telefon:</strong> ' + escHtml(fd.phone) + '</div>';

            // Selected extras
            var selectedExtras = getSelectedExtrasForApi();
            if (selectedExtras.length > 0) {
                html += '<div style="margin-top:8px"><strong>Wybrane opcje:</strong></div><ul style="margin:4px 0 0 16px;padding:0;list-style:disc;">';
                selectedExtras.forEach(function (ex) {
                    var totalPrice = ex.priceAfterDiscount * (ex.amount || 1);
                    var priceInfo = ex.unit === 'doba' && ex.amount > 1
                        ? fmtPrice(ex.priceAfterDiscount) + ' zł/doba × ' + ex.amount + ' = ' + fmtPrice(totalPrice) + ' zł'
                        : fmtPrice(totalPrice) + ' zł';
                    html += '<li>' + escHtml(toSentenceCase(ex.name)) + ' — ' + priceInfo + '</li>';
                });
                html += '</ul>';
            }

            if (fd.message) {
                html += '<div style="margin-top:8px"><strong>Wiadomość:</strong> ' + escHtml(fd.message) + '</div>';
            }

            summaryDetails.innerHTML = html;
        }

        // Price table
        if (summaryTable && summary.pricelist) {
            var html = '<table><thead><tr><th>Nazwa</th><th>Ilość</th><th>Netto</th><th>Brutto</th></tr></thead><tbody>';
            summary.pricelist.forEach(function (item) {
                var rowClass = item.addedBySystem ? ' class="carei-summary__auto-item"' : '';
                html += '<tr' + rowClass + '>' +
                    '<td>' + escHtml(toSentenceCase(item.name)) + (item.addedBySystem ? ' <small>(auto)</small>' : '') + '</td>' +
                    '<td>' + (item.amount || 1) + ' ' + escHtml(item.unit || '') + '</td>' +
                    '<td>' + fmtPrice(item.netValue) + '</td>' +
                    '<td>' + fmtPrice(item.grossValue) + '</td></tr>';
            });
            html += '</tbody></table>';
            summaryTable.innerHTML = html;
        }

        // Totals
        if (summaryTotal) {
            summaryTotal.innerHTML =
                '<div class="carei-summary__total-row"><span class="carei-summary__total-label">Netto:</span><span class="carei-summary__total-value">' + fmtPrice(summary.totalNetValue) + '</span></div>' +
                '<div class="carei-summary__total-row"><span class="carei-summary__total-label">VAT:</span><span class="carei-summary__total-value">' + fmtPrice(summary.totalVatValue) + '</span></div>' +
                '<div class="carei-summary__total-row carei-summary__total-row--gross"><span class="carei-summary__total-label">Do zapłaty:</span><span class="carei-summary__total-value">' + fmtPrice(summary.totalGrossValue) + ' zł</span></div>';
        }
    }

    function fmtPrice(val) {
        if (val === null || val === undefined) return '-';
        return parseFloat(val).toFixed(2).replace('.', ',');
    }

    // ─── Summary Actions ──────────────────────────────────────────

    function handleSummaryBack() {
        transitionStep(summaryOverlay, form, function () {
            setSubmitState('ready');
            if (segmentSelect) segmentSelect.focus();
        });
    }

    function handleSummaryConfirm() {
        if (summaryConfirm) {
            summaryConfirm.disabled = true;
            summaryConfirm.setAttribute('aria-busy', 'true');
            summaryConfirm.innerHTML = '<svg width="16" height="16" viewBox="0 0 24 24" fill="currentColor"><path d="M2.01 21L23 12 2.01 3 2 10l15 2-15 2z"/></svg> Rezerwuję...';
        }
        hideSummaryError();

        var fd = collectFormData();
        var returnBranch = fd.sameReturn ? fd.pickupBranch : fd.returnBranch;

        var bookingData = {
            dateFrom: fd.dateFrom + ':00',
            dateTo: fd.dateTo + ':00',
            customerId: currentCustomerId,
            pickUpLocation: { branchName: fd.pickupBranch, outOfBranch: 'N' },
            returnLocation: { branchName: returnBranch, outOfBranch: 'N' },
            carParameters: { categoryName: fd.segment },
            priceListId: currentPriceListId,
            validTime: 30,
            priceItems: getSelectedExtrasForApi(),
            drivers: [{
                firstName: fd.firstName,
                lastName: fd.lastName,
                address: { city: fd.city, zipCode: fd.zipCode, street: fd.street },
                pesel: fd.pesel,
                phone: fd.phone,
                email: fd.email
            }],
            comments: fd.message || ''
        };

        // Add agreement items
        if (agreementDefs.length > 0) {
            bookingData.agreementItems = agreementDefs.map(function (a) {
                return { id: a.id, value: true };
            });
        }

        apiPost('booking', bookingData).then(function (res) {
            if (res && res.success && res.reservationId) {
                currentReservationId = res.reservationId;
                return apiPost('booking/confirm', { reservationId: res.reservationId }).then(function () {
                    showSuccessView(res.reservationNo || res.reservationId);
                });
            }
            throw new Error(translateRejectReason(res.rejectReason) || 'Rezerwacja nie powiodła się');
        }).catch(function (err) {
            console.error('Booking failed:', err);
            showSummaryError(err.message);
            resetConfirmBtn();
        });
    }

    function translateRejectReason(reason) {
        if (!reason) return null;
        var map = {
            'CAR_NOT_FOUND': 'Brak dostępnego pojazdu w wybranym terminie. Zmień daty lub segment.',
            'INVALID_DATE_RANGE': 'Nieprawidłowy zakres dat',
            'BRANCH_NOT_FOUND': 'Nie znaleziono oddziału',
            'CUSTOMER_ALREADY_EXISTS': 'Klient o tych danych już istnieje w systemie',
            'INVALID_PESEL': 'Nieprawidłowy numer PESEL',
            'PRICE_LIST_EXPIRED': 'Cennik wygasł. Odśwież formularz i spróbuj ponownie.'
        };
        return map[reason] || reason;
    }

    function resetConfirmBtn() {
        if (summaryConfirm) {
            summaryConfirm.disabled = false;
            summaryConfirm.setAttribute('aria-busy', 'false');
            summaryConfirm.innerHTML = '<svg width="16" height="16" viewBox="0 0 24 24" fill="currentColor"><path d="M2.01 21L23 12 2.01 3 2 10l15 2-15 2z"/></svg> Potwierdź rezerwację';
        }
    }

    // ─── Success View ─────────────────────────────────────────────

    function showSuccessView(reservationNo) {
        if (successNumber) successNumber.textContent = 'Nr rezerwacji: ' + reservationNo;
        transitionStep(summaryOverlay, successView, function () {
            announce('Rezerwacja potwierdzona');
            var title = successView.querySelector('.carei-success__title');
            if (title) title.focus();
        });
    }

    function handleSuccessClose() {
        hideStep(successView);
        if (form) { showStep(form); form.reset(); }
        setSubmitState('ready');
        resetConfirmBtn();
        currentCustomerId = null;
        currentReservationId = null;
        hideExtras();
        if (pickupSelect) { populateSelect(pickupSelect, [], 'Najpierw wybierz segment'); pickupSelect.disabled = true; }
        closeModal();
    }

    // ─── Error Helpers ────────────────────────────────────────────

    function showFormError(msg) {
        announce(msg);
        if (errorSummary) { errorSummary.textContent = msg; errorSummary.style.display = 'block'; }
    }

    function showSummaryError(msg) {
        announce(msg);
        if (summaryError) { summaryError.textContent = msg; summaryError.style.display = 'block'; }
    }

    function hideSummaryError() {
        if (summaryError) { summaryError.textContent = ''; summaryError.style.display = 'none'; }
    }

    // ─── Event Listeners ──────────────────────────────────────────

    function initDynamicLoading() {
        if (dateFrom) dateFrom.addEventListener('change', updateDaysCount);
        if (dateTo) dateTo.addEventListener('change', updateDaysCount);
        if (segmentSelect) segmentSelect.addEventListener('change', onSegmentChange);
        if (pickupSelect) pickupSelect.addEventListener('change', onPickupChange);
        if (dateFrom) dateFrom.addEventListener('change', maybeShowExtras);
        if (dateTo) dateTo.addEventListener('change', maybeShowExtras);
    }

    // ─── Aria Live Announcements ───────────────────────────────────

    var liveRegion = null;

    function initLiveRegion() {
        liveRegion = document.createElement('div');
        liveRegion.setAttribute('aria-live', 'polite');
        liveRegion.setAttribute('role', 'status');
        liveRegion.className = 'carei-sr-only';
        if (overlay) overlay.appendChild(liveRegion);
    }

    function announce(msg) {
        if (!liveRegion) return;
        liveRegion.textContent = '';
        setTimeout(function () { liveRegion.textContent = msg; }, 100);
    }

    // ─── HTML Escape Helpers ──────────────────────────────────────

    function escHtml(str) { var d = document.createElement('div'); d.textContent = str || ''; return d.innerHTML; }
    function escAttr(str) { return (str || '').replace(/&/g, '&amp;').replace(/"/g, '&quot;').replace(/'/g, '&#39;').replace(/</g, '&lt;').replace(/>/g, '&gt;'); }
    function toSentenceCase(str) { if (!str) return ''; var s = str.toLowerCase(); return s.charAt(0).toUpperCase() + s.slice(1); }

    // ─── Search Form (Hero Mini Form) ──────────────────────────────

    function initSearchForm() {
        var searchForm = document.querySelector('.carei-search-form');
        if (!searchForm) return;

        var searchSegment = document.getElementById('carei-search-segment');
        var searchDateFrom = document.getElementById('carei-search-date-from');
        var searchDateTo = document.getElementById('carei-search-date-to');
        var searchPickup = document.getElementById('carei-search-pickup');
        var searchSameReturn = document.getElementById('carei-search-same-return');
        var searchSubmit = document.getElementById('carei-search-submit');

        var searchMapData = null;

        // Ładowanie danych do mini formularza
        function loadSearchData() {
            Promise.all([
                apiGet('car-classes-all'),
                apiGet('segments-branches-map')
            ]).then(function (results) {
                var classes = results[0];
                searchMapData = results[1];

                if (Array.isArray(classes) && classes.length > 0) {
                    var segments = classes.map(function (c) {
                        var val = typeof c === 'string' ? c : (c.name || c);
                        var label = typeof c === 'string' ? ('Segment ' + c) : (c.description || c.name || c);
                        return { value: val, label: label };
                    });
                    populateSelect(searchSegment, segments, 'Wybierz segment');
                }
                if (searchPickup) {
                    populateSelect(searchPickup, [], 'Najpierw wybierz segment');
                    searchPickup.disabled = true;
                }
            }).catch(function (err) {
                console.error('Search form: failed to load data:', err);
            });
        }

        // Zmiana segmentu → filtr lokalizacji
        if (searchSegment) {
            searchSegment.addEventListener('change', function () {
                var sel = searchSegment.value;
                if (!sel || !searchMapData || !searchPickup) return;
                var segBranches = searchMapData.segmentToBranches[sel] || [];
                var allBranches = searchMapData.branches || [];
                var opts = [];
                allBranches.forEach(function (b) {
                    if (segBranches.indexOf(b.name || '') !== -1) {
                        var label = b.description || b.name;
                        if (b.city) label += ' — ' + b.city;
                        opts.push({ value: b.name, label: label });
                    }
                });
                if (opts.length > 0) {
                    populateSelect(searchPickup, opts, 'Miejsce odbioru');
                    searchPickup.disabled = false;
                } else {
                    populateSelect(searchPickup, [], 'Brak lokalizacji');
                    searchPickup.disabled = true;
                }
            });
        }

        // Date label behavior
        [searchDateFrom, searchDateTo].forEach(function (input) {
            if (!input) return;
            var wrap = input.closest('.carei-search-form__date-wrap');
            function updateLabel() {
                if (wrap) wrap.classList.toggle('has-value', !!input.value);
            }
            updateLabel();
            input.addEventListener('change', updateLabel);
            input.addEventListener('input', updateLabel);
        });

        // Submit → otwórz modal z pre-fill
        if (searchSubmit) {
            searchSubmit.addEventListener('click', function () {
                if (!overlay) return;

                var valSegment = searchSegment ? searchSegment.value : '';
                var valDateFrom = searchDateFrom ? searchDateFrom.value : '';
                var valDateTo = searchDateTo ? searchDateTo.value : '';
                var valPickup = searchPickup ? searchPickup.value : '';
                var valSameReturn = searchSameReturn ? searchSameReturn.checked : true;

                // Otwórz modal
                openModal(searchSubmit);

                // Pre-fill po załadowaniu danych modala
                function prefillModal() {
                    // Segment
                    if (segmentSelect && valSegment) {
                        segmentSelect.value = valSegment;
                        segmentSelect.dispatchEvent(new Event('change'));
                    }

                    // Daty
                    if (dateFrom && valDateFrom) {
                        dateFrom.value = valDateFrom;
                        dateFrom.dispatchEvent(new Event('change'));
                    }
                    if (dateTo && valDateTo) {
                        dateTo.value = valDateTo;
                        dateTo.dispatchEvent(new Event('change'));
                    }

                    // Checkbox zwrotu
                    if (sameReturnCheck) {
                        sameReturnCheck.checked = valSameReturn;
                        sameReturnCheck.dispatchEvent(new Event('change'));
                    }

                    // Pickup — poczekaj aż lokalizacje się załadują po change segmentu
                    if (valPickup && pickupSelect) {
                        var attempts = 0;
                        var pickupInterval = setInterval(function () {
                            attempts++;
                            // Sprawdź czy opcja jest dostępna
                            var optExists = Array.prototype.slice.call(pickupSelect.options).some(function (o) {
                                return o.value === valPickup;
                            });
                            if (optExists) {
                                clearInterval(pickupInterval);
                                pickupSelect.value = valPickup;
                                pickupSelect.dispatchEvent(new Event('change'));
                            } else if (attempts > 30) {
                                clearInterval(pickupInterval);
                            }
                        }, 100);
                    }
                }

                // Daj czas na loadInitialData w openModal
                setTimeout(prefillModal, 400);
            });
        }

        loadSearchData();
    }

    // ─── Init ─────────────────────────────────────────────────────

    function init() {
        initRefs();

        // Inicjalizuj search form niezależnie od modala
        initSearchForm();

        if (!overlay || !form) return;

        initModal();
        initLiveRegion();
        initSameReturn();
        initDynamicLoading();
        initClearErrors();
        initAbroad();
        initSubmit();
        initMap();
    }

    /* ═══════════════════════════════════════════
       Carei Map — dynamic pins & tooltips
       ═══════════════════════════════════════════ */

    function initMap() {
        var mapEl = document.querySelector('.carei-map');
        if (!mapEl) return;

        var pins;
        try {
            pins = JSON.parse(mapEl.getAttribute('data-pins') || '[]');
        } catch (e) {
            return;
        }
        if (!pins.length) return;

        var svg = mapEl.querySelector('.carei-map__svg');
        var pinsGroup = svg.querySelector('.carei-map__pins');
        var tooltip = mapEl.querySelector('.carei-map__tooltip');
        var tooltipContent = mapEl.querySelector('.carei-map__tooltip-content');
        if (!svg || !pinsGroup || !tooltip || !tooltipContent) return;

        var activePin = null;
        var SVG_NS = 'http://www.w3.org/2000/svg';

        pins.forEach(function (pin) {
            var circle = document.createElementNS(SVG_NS, 'circle');
            circle.setAttribute('cx', pin.x);
            circle.setAttribute('cy', pin.y);
            circle.setAttribute('r', '6');
            circle.setAttribute('fill', '#FF0000');
            circle.setAttribute('class', 'carei-map__pin');
            circle.setAttribute('data-city', pin.city);
            circle.setAttribute('data-address', pin.address || '');

            circle.addEventListener('mouseenter', function () {
                showTooltip(pin, circle);
            });
            circle.addEventListener('mouseleave', function () {
                if (activePin !== circle) {
                    hideTooltip();
                }
            });
            circle.addEventListener('click', function (e) {
                e.stopPropagation();
                if (activePin === circle) {
                    activePin = null;
                    circle.classList.remove('carei-map__pin--active');
                    hideTooltip();
                } else {
                    if (activePin) activePin.classList.remove('carei-map__pin--active');
                    activePin = circle;
                    circle.classList.add('carei-map__pin--active');
                    showTooltip(pin, circle);
                }
            });

            pinsGroup.appendChild(circle);
        });

        // Click outside closes tooltip
        document.addEventListener('click', function () {
            if (activePin) {
                activePin.classList.remove('carei-map__pin--active');
                activePin = null;
                hideTooltip();
            }
        });

        function showTooltip(pin, circle) {
            // Build tooltip text: address lines + bold city
            var addr = pin.address || '';
            var lines = addr ? addr.replace(/\\n/g, '\n') : pin.city;
            tooltipContent.textContent = '';

            // If address has postal code, format nicely
            if (addr) {
                tooltipContent.innerHTML = addr.replace(/\n/g, '<br>');
            } else {
                tooltipContent.textContent = pin.city;
            }

            // Position tooltip relative to map container
            var svgRect = svg.getBoundingClientRect();
            var mapRect = mapEl.getBoundingClientRect();
            var svgWidth = svg.viewBox.baseVal.width || 600;
            var svgHeight = svg.viewBox.baseVal.height || 570;
            var scaleX = svgRect.width / svgWidth;
            var scaleY = svgRect.height / svgHeight;

            var left = (svgRect.left - mapRect.left) + pin.x * scaleX;
            var top = (svgRect.top - mapRect.top) + pin.y * scaleY;

            tooltip.style.display = 'block';
            tooltip.style.left = left + 'px';
            tooltip.style.top = top + 'px';
        }

        function hideTooltip() {
            tooltip.style.display = 'none';
        }
    }

    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', init);
    } else {
        init();
    }
})();