diff --git a/prototype/travel/app-invoice.php b/prototype/travel/app-invoice.php
index ae33647..42c9543 100644
--- a/prototype/travel/app-invoice.php
+++ b/prototype/travel/app-invoice.php
@@ -549,7 +549,7 @@ include '../../header-travel.php';
                                     <td class="text-end">
                                         <button class="btn btn-sm btn-icon btn-text-secondary" data-bs-toggle="tooltip"
                                             title="Podgląd dokumentu"><i class="bx bx-show"></i></button>
-                                        <button class="btn btn-sm btn-primary ms-1">Połącz ze zleceniem</button>
+                                        <button class="btn btn-sm btn-primary ms-1" data-bs-toggle="modal" data-bs-target="#modalLinkExistingInvoice">Połącz ze zleceniem</button>
                                     </td>
                                 </tr>
 
@@ -842,71 +842,228 @@ include '../../header-travel.php';
                         </div>
 
                         <div class="row g-4">
-                            <div class="col-md-6">
-                                <div class="card shadow-none border h-100">
-                                    <div class="card-header bg-lighter py-3 border-bottom">
-                                        <h6 class="mb-0"><i class="bx bx-building-house me-2"></i>Dane dostawcy</h6>
+                            <!-- Lewa kolumna: Podgląd PDF -->
+                            <div class="col-lg-5">
+                                <div class="card shadow-none border h-100 bg-lighter d-flex flex-column">
+                                    <div
+                                        class="card-header py-3 border-bottom bg-white d-flex justify-content-between align-items-center">
+                                        <h6 class="mb-0"><i class="bx bxs-file-pdf text-danger me-2"></i>Podgląd
+                                            dokumentu</h6>
+                                        <div class="badge bg-label-secondary">faktura_transport.pdf</div>
                                     </div>
-                                    <div class="card-body pt-3">
-                                        <div class="mb-3">
-                                            <label class="form-label">Nazwa dostawcy <span
-                                                    class="text-danger">*</span></label>
-                                            <input type="text" class="form-control" value="Flixbus Polska Sp. z o.o.">
-                                        </div>
-                                        <div class="mb-3">
-                                            <label class="form-label d-flex justify-content-between">
-                                                <span>NIP <span class="text-danger">*</span></span>
-                                                <span class="text-success small"><i class="bx bx-check-circle"></i>
-                                                    Znaleziono w bazie</span>
-                                            </label>
-                                            <input type="text" class="form-control border-success" value="1234567890">
-                                        </div>
-                                        <div class="mb-0">
-                                            <label class="form-label">Adres</label>
-                                            <textarea class="form-control"
-                                                rows="2">ul. Przykładowa 12, Warszawa</textarea>
+                                    <div class="card-body p-0 flex-grow-1 d-flex align-items-center justify-content-center"
+                                        style="min-height: 450px; background-color: #525659; border-bottom-left-radius: 0.375rem; border-bottom-right-radius: 0.375rem;">
+                                        <!-- Placeholder for PDF viewer -->
+                                        <div class="text-center text-white p-4">
+                                            <i class="bx bx-file-blank" style="font-size: 4rem; opacity: 0.5;"></i>
+                                            <p class="mt-2 mb-0">Podgląd pliku PDF</p>
                                         </div>
                                     </div>
                                 </div>
                             </div>
 
-                            <div class="col-md-6">
-                                <div class="card shadow-none border h-100">
-                                    <div class="card-header bg-lighter py-3 border-bottom">
-                                        <h6 class="mb-0"><i class="bx bx-receipt me-2"></i>Szczegóły dokumentu</h6>
+                            <!-- Prawa kolumna: Formularz (Dane dostawcy + Szczegóły) -->
+                            <div class="col-lg-7">
+                                <div class="row g-3">
+                                    <div class="col-12">
+                                        <div class="card shadow-none border">
+                                            <div class="card-header bg-lighter py-2 border-bottom">
+                                                <h6 class="mb-0"><i class="bx bx-building-house me-2"></i>Dane dostawcy
+                                                </h6>
+                                            </div>
+                                            <div class="card-body pt-3 pb-2">
+                                                <div class="row g-2">
+                                                    <div class="col-md-6 mb-2">
+                                                        <label class="form-label small mb-1">Nazwa dostawcy <span
+                                                                class="text-danger">*</span></label>
+                                                        <input type="text" class="form-control form-control-sm"
+                                                            value="Flixbus Polska Sp. z o.o.">
+                                                    </div>
+                                                    <div class="col-md-6 mb-2">
+                                                        <label
+                                                            class="form-label small mb-1 d-flex justify-content-between w-100">
+                                                            <span>NIP <span class="text-danger">*</span></span>
+                                                            <span class="text-success" style="font-size: 0.75rem;"><i
+                                                                    class="bx bx-check-circle"></i> W bazie</span>
+                                                        </label>
+                                                        <input type="text"
+                                                            class="form-control form-control-sm border-success"
+                                                            value="1234567890">
+                                                    </div>
+                                                    <div class="col-12">
+                                                        <label class="form-label small mb-1">Adres</label>
+                                                        <textarea class="form-control form-control-sm"
+                                                            rows="1">ul. Przykładowa 12, Warszawa</textarea>
+                                                    </div>
+                                                </div>
+                                            </div>
+                                        </div>
                                     </div>
-                                    <div class="card-body pt-3">
-                                        <div class="row g-3">
-                                            <div class="col-sm-6">
-                                                <label class="form-label">Nr faktury <span
-                                                        class="text-danger">*</span></label>
-                                                <input type="text" class="form-control" value="FV/2026/05/123">
+
+                                    <div class="col-12">
+                                        <div class="card shadow-none border">
+                                            <div class="card-header bg-lighter py-2 border-bottom">
+                                                <h6 class="mb-0"><i class="bx bx-receipt me-2"></i>Szczegóły dokumentu
+                                                </h6>
                                             </div>
-                                            <div class="col-sm-6">
-                                                <label class="form-label">Data wystawienia <span
-                                                        class="text-danger">*</span></label>
-                                                <input type="date" class="form-control" value="2026-05-04">
+                                            <div class="card-body pt-3 pb-2">
+                                                <div class="row g-2">
+                                                    <div class="col-sm-6 mb-2">
+                                                        <label class="form-label small mb-1">Nr faktury <span
+                                                                class="text-danger">*</span></label>
+                                                        <input type="text" class="form-control form-control-sm"
+                                                            value="FV/2026/05/123">
+                                                    </div>
+                                                    <div class="col-sm-6 mb-2">
+                                                        <label class="form-label small mb-1">Data wystawienia <span
+                                                                class="text-danger">*</span></label>
+                                                        <input type="date" class="form-control form-control-sm"
+                                                            value="2026-05-04">
+                                                    </div>
+                                                    <div class="col-sm-4 mb-2">
+                                                        <label class="form-label small mb-1">Kwota netto</label>
+                                                        <input type="number" class="form-control form-control-sm"
+                                                            value="3414.63">
+                                                    </div>
+                                                    <div class="col-sm-4 mb-2">
+                                                        <label class="form-label small mb-1">Kwota VAT</label>
+                                                        <input type="number" class="form-control form-control-sm"
+                                                            value="785.37">
+                                                    </div>
+                                                    <div class="col-sm-4 mb-2">
+                                                        <label class="form-label small mb-1">Waluta</label>
+                                                        <select class="form-select form-select-sm">
+                                                            <option value="PLN" selected>PLN</option>
+                                                            <option value="EUR">EUR</option>
+                                                        </select>
+                                                    </div>
+                                                    <div class="col-sm-12">
+                                                        <label class="form-label small mb-1">Kwota brutto <span
+                                                                class="text-danger">*</span></label>
+                                                        <input type="number"
+                                                            class="form-control form-control-lg fw-bold text-primary"
+                                                            id="invoiceGrossAmount" value="4200.00">
+                                                    </div>
+                                                </div>
                                             </div>
-                                            <div class="col-sm-6">
-                                                <label class="form-label">Kwota netto</label>
-                                                <input type="number" class="form-control" value="3414.63">
+                                        </div>
+                                    </div>
+
+                                    <div class="col-12">
+                                        <div class="card shadow-none border">
+                                            <div
+                                                class="card-header bg-lighter py-2 border-bottom d-flex justify-content-between align-items-center">
+                                                <h6 class="mb-0"><i class="bx bx-list-ul me-2"></i>Pozycje z faktury
+                                                    (OCR)</h6>
+                                                <button type="button" class="btn btn-xs btn-outline-primary"><i
+                                                        class="bx bx-plus"></i> Dodaj</button>
                                             </div>
-                                            <div class="col-sm-6">
-                                                <label class="form-label">Kwota VAT</label>
-                                                <input type="number" class="form-control" value="785.37">
-                                            </div>
-                                            <div class="col-sm-8">
-                                                <label class="form-label">Kwota brutto <span
-                                                        class="text-danger">*</span></label>
-                                                <input type="number" class="form-control fw-bold text-primary"
-                                                    id="invoiceGrossAmount" value="4200.00">
-                                            </div>
-                                            <div class="col-sm-4">
-                                                <label class="form-label">Waluta</label>
-                                                <select class="form-select">
-                                                    <option value="PLN" selected>PLN</option>
-                                                    <option value="EUR">EUR</option>
-                                                </select>
+                                            <div class="card-body p-0">
+                                                <div class="table-responsive">
+                                                    <table class="table table-sm table-hover mb-0"
+                                                        style="font-size: 0.75rem;">
+                                                        <thead class="table-light">
+                                                            <tr>
+                                                                <th style="width: 45%;" class="px-2">Nazwa</th>
+                                                                <th style="width: 10%;" class="px-1 text-center">Ilość
+                                                                </th>
+                                                                <th style="width: 15%;" class="px-1 text-end">Cena netto
+                                                                </th>
+                                                                <th style="width: 15%;" class="px-1 text-end">Kwota
+                                                                    netto</th>
+                                                                <th style="width: 10%;" class="px-1">VAT</th>
+                                                                <th style="width: 5%;" class="px-2 text-center"></th>
+                                                            </tr>
+                                                        </thead>
+                                                        <tbody>
+                                                            <tr>
+                                                                <td class="px-2 py-1"><input type="text"
+                                                                        class="form-control form-control-sm px-2 py-1"
+                                                                        style="font-size: 0.75rem;"
+                                                                        value="Przejazd autokarowy WWA-ZAK"></td>
+                                                                <td class="px-1 py-1"><input type="number"
+                                                                        class="form-control form-control-sm px-1 py-1 text-center"
+                                                                        style="font-size: 0.75rem;" value="24"></td>
+                                                                <td class="px-1 py-1"><input type="number"
+                                                                        class="form-control form-control-sm px-1 py-1 text-end"
+                                                                        style="font-size: 0.75rem;" value="108.33"></td>
+                                                                <td class="px-1 py-1"><input type="number"
+                                                                        class="form-control form-control-sm px-1 py-1 text-end"
+                                                                        style="font-size: 0.75rem;" value="2600.00">
+                                                                </td>
+                                                                <td class="px-1 py-1">
+                                                                    <select class="form-select form-select-sm px-1 py-1"
+                                                                        style="font-size: 0.75rem;">
+                                                                        <option value="8" selected>8%</option>
+                                                                        <option value="23">23%</option>
+                                                                        <option value="0">0%</option>
+                                                                    </select>
+                                                                </td>
+                                                                <td class="px-2 py-1 text-center">
+                                                                    <button class="btn btn-xs btn-icon text-danger"
+                                                                        title="Usuń"><i
+                                                                            class="bx bx-trash"></i></button>
+                                                                </td>
+                                                            </tr>
+                                                            <tr>
+                                                                <td class="px-2 py-1"><input type="text"
+                                                                        class="form-control form-control-sm px-2 py-1"
+                                                                        style="font-size: 0.75rem;"
+                                                                        value="Przejazd autokarowy ZAK-WWA"></td>
+                                                                <td class="px-1 py-1"><input type="number"
+                                                                        class="form-control form-control-sm px-1 py-1 text-center"
+                                                                        style="font-size: 0.75rem;" value="24"></td>
+                                                                <td class="px-1 py-1"><input type="number"
+                                                                        class="form-control form-control-sm px-1 py-1 text-end"
+                                                                        style="font-size: 0.75rem;" value="25.00"></td>
+                                                                <td class="px-1 py-1"><input type="number"
+                                                                        class="form-control form-control-sm px-1 py-1 text-end"
+                                                                        style="font-size: 0.75rem;" value="600.00"></td>
+                                                                <td class="px-1 py-1">
+                                                                    <select class="form-select form-select-sm px-1 py-1"
+                                                                        style="font-size: 0.75rem;">
+                                                                        <option value="8" selected>8%</option>
+                                                                        <option value="23">23%</option>
+                                                                        <option value="0">0%</option>
+                                                                    </select>
+                                                                </td>
+                                                                <td class="px-2 py-1 text-center">
+                                                                    <button class="btn btn-xs btn-icon text-danger"
+                                                                        title="Usuń"><i
+                                                                            class="bx bx-trash"></i></button>
+                                                                </td>
+                                                            </tr>
+                                                            <tr>
+                                                                <td class="px-2 py-1"><input type="text"
+                                                                        class="form-control form-control-sm px-2 py-1"
+                                                                        style="font-size: 0.75rem;"
+                                                                        value="Opłata za rezerwację + obsługa"></td>
+                                                                <td class="px-1 py-1"><input type="number"
+                                                                        class="form-control form-control-sm px-1 py-1 text-center"
+                                                                        style="font-size: 0.75rem;" value="1"></td>
+                                                                <td class="px-1 py-1"><input type="number"
+                                                                        class="form-control form-control-sm px-1 py-1 text-end"
+                                                                        style="font-size: 0.75rem;" value="214.63"></td>
+                                                                <td class="px-1 py-1"><input type="number"
+                                                                        class="form-control form-control-sm px-1 py-1 text-end"
+                                                                        style="font-size: 0.75rem;" value="214.63"></td>
+                                                                <td class="px-1 py-1">
+                                                                    <select class="form-select form-select-sm px-1 py-1"
+                                                                        style="font-size: 0.75rem;">
+                                                                        <option value="8">8%</option>
+                                                                        <option value="23" selected>23%</option>
+                                                                        <option value="0">0%</option>
+                                                                    </select>
+                                                                </td>
+                                                                <td class="px-2 py-1 text-center">
+                                                                    <button class="btn btn-xs btn-icon text-danger"
+                                                                        title="Usuń"><i
+                                                                            class="bx bx-trash"></i></button>
+                                                                </td>
+                                                            </tr>
+                                                        </tbody>
+                                                    </table>
+                                                </div>
                                             </div>
                                         </div>
                                     </div>
@@ -930,7 +1087,7 @@ include '../../header-travel.php';
 
                         <div class="row g-3 mb-4">
 
-                            <div class="col-md-4">
+                            <div class="col-md-3">
                                 <label class="card border border-2 shadow-none cursor-pointer h-100 option-card"
                                     for="assignSingle">
                                     <div class="card-body text-center p-3">
@@ -939,12 +1096,12 @@ include '../../header-travel.php';
                                         <h6 class="mb-1"><i
                                                 class="bx bx-link-alt fs-4 d-block mb-2 text-primary"></i>Pojedyncze
                                             (1:1)</h6>
-                                        <small class="text-muted">Jedna faktura na jedno zlecenie.</small>
+                                        <small class="text-muted">Faktura na jedno zlecenie.</small>
                                     </div>
                                 </label>
                             </div>
 
-                            <div class="col-md-4">
+                            <div class="col-md-3">
                                 <label class="card border shadow-none cursor-pointer h-100 option-card bg-lighter"
                                     for="assignSplit">
                                     <div class="card-body text-center p-3">
@@ -953,12 +1110,12 @@ include '../../header-travel.php';
                                         <h6 class="mb-1"><i
                                                 class="bx bx-git-branch fs-4 d-block mb-2 text-primary"></i>Rozksięgowanie
                                             (1:N)</h6>
-                                        <small class="text-muted">Faktura zbiorcza na kilka zleceń.</small>
+                                        <small class="text-muted">Faktura na kilka zleceń.</small>
                                     </div>
                                 </label>
                             </div>
 
-                            <div class="col-md-4">
+                            <div class="col-md-3">
                                 <label class="card border shadow-none cursor-pointer h-100 option-card bg-lighter"
                                     for="assignPartial">
                                     <div class="card-body text-center p-3">
@@ -967,7 +1124,21 @@ include '../../header-travel.php';
                                         <h6 class="mb-1"><i
                                                 class="bx bx-layer-plus fs-4 d-block mb-2 text-primary"></i>Cząstkowe
                                             (N:1)</h6>
-                                        <small class="text-muted">Zaliczka/Dopłata do zlecenia.</small>
+                                        <small class="text-muted">Zaliczka do zlecenia.</small>
+                                    </div>
+                                </label>
+                            </div>
+
+                            <div class="col-md-3">
+                                <label class="card border shadow-none cursor-pointer h-100 option-card bg-lighter"
+                                    for="assignGeneral">
+                                    <div class="card-body text-center p-3">
+                                        <input type="radio" name="assignType" id="assignGeneral" value="general"
+                                            class="form-check-input mb-3" onchange="toggleAssignType('general')">
+                                        <h6 class="mb-1"><i
+                                                class="bx bx-buildings fs-4 d-block mb-2 text-primary"></i>Koszty
+                                            ogólne</h6>
+                                        <small class="text-muted">Bez przypisania do zlecenia.</small>
                                     </div>
                                 </label>
                             </div>
@@ -1071,7 +1242,7 @@ include '../../header-travel.php';
                         </div>
                         <!-- /Card: Podsumowanie odczytanej faktury -->
 
-                        <div class="card shadow-sm border">
+                        <div class="card shadow-sm border" id="ordersListCard">
                             <div
                                 class="card-header bg-label-secondary d-flex justify-content-between align-items-center py-3">
                                 <h6 class="mb-0">Dostępne zlecenia dla: Flixbus Polska</h6>
@@ -1164,6 +1335,155 @@ include '../../header-travel.php';
     </div>
 </div>
 
+<!-- Modal: Połącz istniejącą fakturę ze zleceniem -->
+<div class="modal fade" id="modalLinkExistingInvoice" tabindex="-1" aria-hidden="true">
+    <div class="modal-dialog modal-xl modal-dialog-centered">
+        <div class="modal-content">
+            <div class="modal-header border-bottom pb-3">
+                <h5 class="modal-title d-flex align-items-center">
+                    <i class="bx bx-link text-primary fs-4 me-2"></i>
+                    Połącz fakturę ze zleceniem (lub w Koszty ogólne)
+                </h5>
+                <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
+            </div>
+            <div class="modal-body p-4">
+                <h6 class="mb-3">Wybierz sposób rozliczenia dokumentu</h6>
+                <div class="row g-3 mb-4">
+                    <div class="col-md-3">
+                        <label class="card border border-2 shadow-none cursor-pointer h-100 option-card-existing border-primary" for="assignSingleExisting">
+                            <div class="card-body text-center p-3">
+                                <input type="radio" name="assignTypeExisting" id="assignSingleExisting" value="single" class="form-check-input mb-3" checked onchange="toggleAssignTypeExisting('single')">
+                                <h6 class="mb-1"><i class="bx bx-link-alt fs-4 d-block mb-2 text-primary"></i>Pojedyncze (1:1)</h6>
+                                <small class="text-muted">Faktura na jedno zlecenie.</small>
+                            </div>
+                        </label>
+                    </div>
+                    <div class="col-md-3">
+                        <label class="card border shadow-none cursor-pointer h-100 option-card-existing bg-lighter" for="assignSplitExisting">
+                            <div class="card-body text-center p-3">
+                                <input type="radio" name="assignTypeExisting" id="assignSplitExisting" value="split" class="form-check-input mb-3" onchange="toggleAssignTypeExisting('split')">
+                                <h6 class="mb-1"><i class="bx bx-git-branch fs-4 d-block mb-2 text-primary"></i>Rozksięgowanie (1:N)</h6>
+                                <small class="text-muted">Faktura na kilka zleceń.</small>
+                            </div>
+                        </label>
+                    </div>
+                    <div class="col-md-3">
+                        <label class="card border shadow-none cursor-pointer h-100 option-card-existing bg-lighter" for="assignPartialExisting">
+                            <div class="card-body text-center p-3">
+                                <input type="radio" name="assignTypeExisting" id="assignPartialExisting" value="partial" class="form-check-input mb-3" onchange="toggleAssignTypeExisting('partial')">
+                                <h6 class="mb-1"><i class="bx bx-layer-plus fs-4 d-block mb-2 text-primary"></i>Cząstkowe (N:1)</h6>
+                                <small class="text-muted">Zaliczka do zlecenia.</small>
+                            </div>
+                        </label>
+                    </div>
+                    <div class="col-md-3">
+                        <label class="card border shadow-none cursor-pointer h-100 option-card-existing bg-lighter" for="assignGeneralExisting">
+                            <div class="card-body text-center p-3">
+                                <input type="radio" name="assignTypeExisting" id="assignGeneralExisting" value="general" class="form-check-input mb-3" onchange="toggleAssignTypeExisting('general')">
+                                <h6 class="mb-1"><i class="bx bx-buildings fs-4 d-block mb-2 text-primary"></i>Koszty ogólne</h6>
+                                <small class="text-muted">Bez przypisania do zlecenia.</small>
+                            </div>
+                        </label>
+                    </div>
+                </div>
+
+                <!-- Podsumowanie faktury -->
+                <div class="card shadow-none border mb-3">
+                    <div class="card-header py-2 px-3 d-flex align-items-center justify-content-between" style="background: linear-gradient(135deg, #f0f4ff 0%, #e8f0fe 100%); border-bottom: 1px solid #d0deff;">
+                        <div class="d-flex align-items-center gap-2">
+                            <i class="bx bx-receipt text-primary fs-5"></i>
+                            <span class="fw-semibold text-dark small">Szczegóły wybranej faktury</span>
+                        </div>
+                        <div class="d-flex align-items-center gap-3">
+                            <div class="d-flex align-items-center gap-2">
+                                <span class="text-muted small">Nr faktury:</span>
+                                <span class="badge bg-label-primary fw-semibold">FV/2026/05/1234</span>
+                            </div>
+                            <div class="d-flex align-items-center gap-2">
+                                <span class="text-muted small">Dostawca:</span>
+                                <span class="fw-semibold small text-dark">Flixbus Polska Sp. z o.o.</span>
+                            </div>
+                            <div class="vr opacity-25"></div>
+                            <div class="d-flex align-items-center gap-2">
+                                <span class="text-muted small">Brutto:</span>
+                                <span class="fw-bold text-primary">4 200,00 PLN</span>
+                                <input type="hidden" id="invoiceGrossAmountExisting" value="4200.00">
+                            </div>
+                        </div>
+                    </div>
+                </div>
+
+                <div class="card shadow-sm border" id="ordersListCardExisting">
+                    <div class="card-header bg-label-secondary d-flex justify-content-between align-items-center py-3">
+                        <h6 class="mb-0">Dostępne zlecenia dla: Flixbus Polska</h6>
+                        <div class="input-group input-group-sm w-auto">
+                            <span class="input-group-text"><i class="bx bx-search"></i></span>
+                            <input type="text" class="form-control" placeholder="Szukaj wycieczki...">
+                        </div>
+                    </div>
+                    <div class="table-responsive" style="max-height: 300px;">
+                        <table class="table table-hover mb-0">
+                            <thead class="table-light sticky-top text-nowrap">
+                                <tr>
+                                    <th width="40"></th>
+                                    <th>Zlecenie / Wycieczka</th>
+                                    <th>Data real.</th>
+                                    <th class="text-end">Kwota zlecenia</th>
+                                    <th width="150" class="text-end split-col-existing d-none">Przypisz kwotę</th>
+                                </tr>
+                            </thead>
+                            <tbody>
+                                <tr class="assign-order-row-existing" data-order-amount="4200.00">
+                                    <td><input class="form-check-input" type="radio" name="orderSelectExisting"></td>
+                                    <td>
+                                        <div class="d-flex flex-column">
+                                            <span class="fw-semibold text-primary d-flex align-items-center gap-2">ZL/2026/05/089
+                                                <span class="badge bg-label-success order-suggestion-badge">Sugerowane zlecenie</span>
+                                            </span>
+                                            <small class="text-muted">#WYC-098 (Tatry)</small>
+                                        </div>
+                                    </td>
+                                    <td>05.05.2026</td>
+                                    <td class="text-end fw-semibold">4 200,00 PLN</td>
+                                    <td class="split-col-existing d-none text-end"><input type="number" class="form-control form-control-sm text-end split-amount-input-existing" placeholder="0.00" min="0" step="0.01"></td>
+                                </tr>
+                                <tr class="assign-order-row-existing" data-order-amount="2100.00">
+                                    <td><input class="form-check-input" type="radio" name="orderSelectExisting"></td>
+                                    <td>
+                                        <div class="d-flex flex-column">
+                                            <span class="fw-semibold text-primary d-flex align-items-center gap-2">ZL/2026/05/156
+                                                <span class="badge bg-label-success order-suggestion-badge d-none">Sugerowane zlecenie</span>
+                                            </span>
+                                            <small class="text-muted">#WYC-103 (Kraków)</small>
+                                        </div>
+                                    </td>
+                                    <td>08.05.2026</td>
+                                    <td class="text-end fw-semibold">2 100,00 PLN</td>
+                                    <td class="split-col-existing d-none text-end"><input type="number" class="form-control form-control-sm text-end split-amount-input-existing" placeholder="0.00" min="0" step="0.01"></td>
+                                </tr>
+                            </tbody>
+                            <tfoot>
+                                <tr id="splitTotalRowExisting" class="table-light d-none">
+                                    <td colspan="4" class="text-end fw-semibold">Suma przypisanych kwot:</td>
+                                    <td class="text-end fw-bold" id="splitTotalValueExisting">0,00 PLN</td>
+                                </tr>
+                            </tfoot>
+                        </table>
+                    </div>
+                </div>
+                
+                <div class="alert alert-danger d-none mt-3 mb-0" id="splitValidationAlertExisting" role="alert">
+                    Suma przypisanych pozycji musi być równa kwocie faktury.
+                </div>
+            </div>
+            <div class="modal-footer border-top pt-3">
+                <button type="button" class="btn btn-label-secondary" data-bs-dismiss="modal">Anuluj</button>
+                <button type="button" class="btn btn-success" id="btnSaveAssignExisting"><i class="bx bx-check me-1"></i> Zapisz powiązanie</button>
+            </div>
+        </div>
+    </div>
+</div>
+
 <script>
     // --- OBSŁUGA PANELU FILTRÓW ---
     var filtersVisible = true; // początkowo widoczne
@@ -1302,6 +1622,16 @@ include '../../header-travel.php';
         activeCard.classList.add('border-2', 'border-primary');
         activeCard.classList.remove('bg-lighter');
 
+        // Pokaz/ukryj listę zleceń w przypadku kosztów ogólnych
+        const ordersListCard = document.getElementById('ordersListCard');
+        if (ordersListCard) {
+            if (type === 'general') {
+                ordersListCard.classList.add('d-none');
+            } else {
+                ordersListCard.classList.remove('d-none');
+            }
+        }
+
         // Pokaż/ukryj kolumnę z kwotami w tabeli (dla 1:N)
         const splitCols = document.querySelectorAll('.split-col');
         if (type === 'split') {
@@ -1422,6 +1752,90 @@ include '../../header-travel.php';
     });
     updateSuggestedOrder();
     updateSplitAmountSummary();
+
+    // --- JS DLA MODALA: Połącz istniejącą fakturę ze zleceniem ---
+    function toggleAssignTypeExisting(type) {
+        document.querySelectorAll('.option-card-existing').forEach(card => {
+            card.classList.remove('border-2', 'border-primary');
+            card.classList.add('bg-lighter');
+        });
+
+        const activeInput = document.querySelector(`input[id="assign${type.charAt(0).toUpperCase() + type.slice(1)}Existing"]`);
+        if (activeInput) {
+            const activeCard = activeInput.closest('.option-card-existing');
+            activeCard.classList.add('border-2', 'border-primary');
+            activeCard.classList.remove('bg-lighter');
+        }
+
+        const ordersListCard = document.getElementById('ordersListCardExisting');
+        if (ordersListCard) {
+            ordersListCard.classList.toggle('d-none', type === 'general');
+        }
+
+        const splitCols = document.querySelectorAll('.split-col-existing');
+        if (type === 'split') {
+            splitCols.forEach(col => col.classList.remove('d-none'));
+            document.querySelectorAll('input[name="orderSelectExisting"]').forEach(el => el.type = 'checkbox');
+        } else {
+            splitCols.forEach(col => col.classList.add('d-none'));
+            document.querySelectorAll('input[name="orderSelectExisting"]').forEach(el => el.type = 'radio');
+        }
+        
+        updateSplitAmountSummaryExisting();
+    }
+    
+    function updateSplitAmountSummaryExisting() {
+        const isSplit = document.getElementById('assignSplitExisting')?.checked;
+        const totalRow = document.getElementById('splitTotalRowExisting');
+        const alertBox = document.getElementById('splitValidationAlertExisting');
+        const saveBtn = document.getElementById('btnSaveAssignExisting');
+
+        if (!isSplit) {
+            totalRow?.classList.add('d-none');
+            alertBox?.classList.add('d-none');
+            if (saveBtn) saveBtn.disabled = false;
+            return;
+        }
+
+        totalRow?.classList.remove('d-none');
+        let sum = 0;
+        document.querySelectorAll('.split-amount-input-existing').forEach(input => {
+            const val = parseFloat(input.value);
+            if (!isNaN(val)) sum += val;
+        });
+
+        const totalValueEl = document.getElementById('splitTotalValueExisting');
+        if (totalValueEl) totalValueEl.textContent = formatPln(sum);
+
+        const invoiceInput = document.getElementById('invoiceGrossAmountExisting');
+        const invoiceGross = parseFloat(invoiceInput ? invoiceInput.value : 0) || 0;
+
+        if (Math.abs(sum - invoiceGross) > 0.01) {
+            alertBox?.classList.remove('d-none');
+            if (saveBtn) saveBtn.disabled = true;
+        } else {
+            alertBox?.classList.add('d-none');
+            if (saveBtn) saveBtn.disabled = false;
+        }
+    }
+    
+    document.querySelectorAll('input[name="orderSelectExisting"], .split-amount-input-existing').forEach(el => {
+        el.addEventListener('change', updateSplitAmountSummaryExisting);
+        el.addEventListener('input', updateSplitAmountSummaryExisting);
+    });
+
+    document.querySelectorAll('.split-amount-input-existing').forEach(input => {
+        input.addEventListener('input', function () {
+            const row = input.closest('tr');
+            const selector = row ? row.querySelector('input[name="orderSelectExisting"]') : null;
+            const value = parseFloat(input.value);
+            if (selector && Number.isFinite(value) && value > 0) {
+                selector.checked = true;
+            }
+        });
+    });
+
+    toggleAssignTypeExisting('single'); // inicjalizacja
 </script>
 
 <style>