diff --git a/src/add_packing_list.php b/src/add_packing_list.php
index 05c3085..c456d6d 100644
--- a/src/add_packing_list.php
+++ b/src/add_packing_list.php
@@ -1,6 +1,6 @@
 <?php
 // add_packing_list.php - Neue Packliste hinzufügen
-// KORREKTUR: Die Verarbeitungslogik wurde an den Anfang der Datei verschoben, um die Weiterleitung zu reparieren.
+// VALIDIERUNG: Verhindert doppelte Rucksack-Zuweisung (Server & Client)
 
 if (session_status() == PHP_SESSION_NONE) {
     session_start();
@@ -12,7 +12,7 @@ if (!isset($_SESSION['user_id'])) {
 
 require_once 'db_connect.php';
 require_once 'household_actions.php';
-require_once 'backpack_utils.php'; // Shared backpack functions
+require_once 'backpack_utils.php';
 
 $current_user_id = $_SESSION['user_id'];
 $message = '';
@@ -32,7 +32,6 @@ if ($household_id_for_user) {
     $stmt_u = $conn->prepare("SELECT id, username FROM users WHERE household_id = ?");
     $stmt_u->bind_param("i", $household_id_for_user);
 } else {
-    // Just the current user
     $stmt_u = $conn->prepare("SELECT id, username FROM users WHERE id = ?");
     $stmt_u->bind_param("i", $current_user_id);
 }
@@ -48,8 +47,28 @@ if ($_SERVER["REQUEST_METHOD"] == "POST") {
     $description = trim($_POST['description']);
     $household_id = isset($_POST['is_household_list']) && $household_id_for_user ? $household_id_for_user : NULL;
 
+    // Server-Side Validation for duplicate backpacks
+    $selected_backpacks = [];
+    $has_duplicate_backpacks = false;
+    if (isset($_POST['participate']) && is_array($_POST['participate'])) {
+        foreach ($_POST['participate'] as $uid => $val) {
+            if ($val) {
+                $bid = isset($_POST['backpacks'][$uid]) ? intval($_POST['backpacks'][$uid]) : 0;
+                if ($bid > 0) {
+                    if (in_array($bid, $selected_backpacks)) {
+                        $has_duplicate_backpacks = true;
+                        break;
+                    }
+                    $selected_backpacks[] = $bid;
+                }
+            }
+        }
+    }
+
     if (empty($name)) {
         $message = '<div class="alert alert-danger" role="alert">Der Packlistenname darf nicht leer sein.</div>';
+    } elseif ($has_duplicate_backpacks) {
+        $message = '<div class="alert alert-danger" role="alert">Fehler: Ein Rucksack kann nicht mehreren Personen zugewiesen werden. Bitte korrigieren Sie die Auswahl.</div>';
     } else {
         $stmt = $conn->prepare("INSERT INTO packing_lists (user_id, household_id, name, description) VALUES (?, ?, ?, ?)");
         if ($stmt === false) {
@@ -59,19 +78,11 @@ if ($_SERVER["REQUEST_METHOD"] == "POST") {
             if ($stmt->execute()) {
                 $new_list_id = $conn->insert_id;
                 
-                // Handle Backpacks and Participation
                 if (isset($_POST['participate']) && is_array($_POST['participate'])) {
                     foreach ($_POST['participate'] as $uid => $val) {
                         $uid = intval($uid);
-                        // Only add if checked (value is usually '1')
                         if ($val) {
                             $bid = isset($_POST['backpacks'][$uid]) ? intval($_POST['backpacks'][$uid]) : 0;
-                            
-                            // Insert Carrier (even if no backpack is assigned, they are a carrier on the list)
-                            // But DB schema: packing_list_carriers links user to list. Backpack is optional.
-                            // If we want them on the list, we insert.
-                            
-                            // Check if $bid is valid (>0)
                             $bid_to_insert = ($bid > 0) ? $bid : NULL;
                             
                             $stmt_in = $conn->prepare("INSERT INTO packing_list_carriers (packing_list_id, user_id, backpack_id) VALUES (?, ?, ?)");
@@ -84,10 +95,6 @@ if ($_SERVER["REQUEST_METHOD"] == "POST") {
                             }
                         }
                     }
-                } else {
-                    // If no array (e.g. single user form without checkboxes?), usually we force current user?
-                    // Or assume no one selected. Let's ensure Current User is added if not explicitly unchecked?
-                    // Actually, the UI below will default to checked for everyone.
                 }
 
                 if ($household_id_for_user) {
@@ -117,7 +124,7 @@ require_once 'header.php';
     <div class="card-body p-4">
         <?php if(!empty($message)) echo $message; ?>
 
-        <form action="add_packing_list.php" method="post">
+        <form action="add_packing_list.php" method="post" id="createListForm">
             <div class="row">
                 <div class="col-md-7">
                     <div class="mb-3">
@@ -142,17 +149,18 @@ require_once 'header.php';
                     <div class="card bg-light border-0">
                         <div class="card-body">
                             <p class="small text-muted">Wähle aus, wer mitkommt und wer welchen Rucksack trägt.</p>
+                            <div id="backpack-warning" class="alert alert-warning d-none small p-2 mb-2">
+                                <i class="fas fa-exclamation-triangle me-1"></i> Achtung: Ein Rucksack wurde mehrfach ausgewählt!
+                            </div>
                             
                             <?php 
                             $user_backpacks_json = [];
-                            $all_assigned_backpack_ids = []; // Empty for new list
+                            $all_assigned_backpack_ids = []; 
 
                             foreach ($available_users as $user): 
                                 $user_backpacks = get_available_backpacks_for_user($conn, $user['id'], $household_id_for_user);
-                                // Pre-select: None (0)
                                 $current_bp_id = 0;
                                 
-                                // Store for JS
                                 $user_backpacks_json[$user['id']] = [
                                     'current_id' => $current_bp_id,
                                     'backpacks' => $user_backpacks
@@ -160,32 +168,103 @@ require_once 'header.php';
                             ?>
                                 <div class="mb-3 pb-3 border-bottom">
                                     <div class="form-check mb-2">
-                                        <input class="form-check-input" type="checkbox" name="participate[<?php echo $user['id']; ?>]" value="1" checked id="part_<?php echo $user['id']; ?>">
+                                        <input class="form-check-input participation-check" type="checkbox" name="participate[<?php echo $user['id']; ?>]" value="1" checked id="part_<?php echo $user['id']; ?>">
                                         <label class="form-check-label fw-bold" for="part_<?php echo $user['id']; ?>">
                                             <?php echo htmlspecialchars($user['username']); ?>
                                         </label>
                                     </div>
                                     <div class="ms-4">
+                                        <!-- Pass class for JS validation -->
                                         <?php echo render_backpack_card_selector($user, $current_bp_id, $user_backpacks); ?>
-                                    </div>
-                                                                </div>
-                                                            <?php endforeach; ?>
-                                                        </div>
-                                                    </div>
-                                                </div>
-                                            </div>
-                                
-                                            <hr>
-                                
-                                            <div class="d-flex justify-content-between mt-4">
-                                                <button type="submit" class="btn btn-primary"><i class="fas fa-plus-circle me-2"></i>Packliste erstellen</button>
-                                                <a href="packing_lists.php" class="btn btn-secondary"><i class="fas fa-arrow-left me-2"></i>Abbrechen</a>
-                                            </div>
-                                        </form>
                                     </div>
                                 </div>
+                            <?php endforeach; ?>
+                        </div>
+                    </div>
+                </div>
+            </div>
+
+            <hr>
+
+            <div class="d-flex justify-content-between mt-4">
+                <button type="submit" class="btn btn-primary" id="submitBtn"><i class="fas fa-plus-circle me-2"></i>Packliste erstellen</button>
+                <a href="packing_lists.php" class="btn btn-secondary"><i class="fas fa-arrow-left me-2"></i>Abbrechen</a>
+            </div>
+        </form>
+    </div>
+</div>
+
+<!-- Custom Script for Validation -->
+<script>
+document.addEventListener('DOMContentLoaded', function() {
+    const form = document.getElementById('createListForm');
+    const submitBtn = document.getElementById('submitBtn');
+    const warning = document.getElementById('backpack-warning');
+    
+    // Helper function to check duplicates
+    function validateBackpacks() {
+        const selected = [];
+        let hasDuplicate = false;
+        
+        // Find all hidden inputs that store the backpack ID (usually named backpacks[UserID])
+        // Since render_backpack_card_selector uses a hidden input with name="backpacks[ID]", we select those
+        const inputs = document.querySelectorAll('input[name^="backpacks["]');
+        
+        inputs.forEach(input => {
+            // Check if user participates
+            // The input name is backpacks[123], we need to find checkbox participate[123]
+            const userIdMatch = input.name.match(/backpacks\[(\d+)\]/);
+            if (userIdMatch) {
+                const userId = userIdMatch[1];
+                const partCheck = document.getElementById('part_' + userId);
+                
+                if (partCheck && partCheck.checked) {
+                    const val = parseInt(input.value);
+                    if (val > 0) {
+                        if (selected.includes(val)) {
+                            hasDuplicate = true;
+                        }
+                        selected.push(val);
+                    }
+                }
+            }
+        });
+        
+        if (hasDuplicate) {
+            warning.classList.remove('d-none');
+            submitBtn.disabled = true;
+        } else {
+            warning.classList.add('d-none');
+            submitBtn.disabled = false;
+        }
+    }
+    
+    // Observe changes. 
+    // The modal script updates the hidden input. We can listen to a custom event or use MutationObserver.
+    // Or simply listen to clicks on the "Select" buttons in the modal, but the modal logic is separate.
+    // However, the `render_backpack_modal_script` updates the UI and the hidden input. 
+    // We can attach a MutationObserver to the form to detect value changes or DOM changes in the backpack cards.
+    
+    const observer = new MutationObserver(function(mutations) {
+        validateBackpacks();
+    });
+    
+    observer.observe(document.querySelector('.card-body'), {
+        subtree: true,
+        attributes: true, // value change might not trigger attribute change in DOM for inputs, but innerHTML changes of cards do
+        childList: true
+    });
+    
+    // Also listen to participation checkboxes
+    document.querySelectorAll('.participation-check').forEach(chk => {
+        chk.addEventListener('change', validateBackpacks);
+    });
+    
+    // Initial check
+    validateBackpacks();
+});
+</script>
+
+<?php echo render_backpack_modal_script($user_backpacks_json, $all_assigned_backpack_ids); ?>
                                 
-                                <!-- Render Modal JS -->
-                                <?php echo render_backpack_modal_script($user_backpacks_json, $all_assigned_backpack_ids); ?>
-                                
-                                <?php require_once 'footer.php'; ?>
+<?php require_once 'footer.php'; ?>
\ No newline at end of file
diff --git a/src/backpacks.php b/src/backpacks.php
index 75cbbe4..4e13ee7 100644
--- a/src/backpacks.php
+++ b/src/backpacks.php
@@ -33,7 +33,6 @@ if (isset($_POST['delete_backpack_id'])) {
 }
 
 // Fetch Backpacks (Personal + Household)
-// Logic: Show my backpacks AND backpacks from my household (if I'm in one)
 $household_id = null;
 $stmt_hh = $conn->prepare("SELECT household_id FROM users WHERE id = ?");
 $stmt_hh->bind_param("i", $user_id);
@@ -44,6 +43,11 @@ if ($row = $res_hh->fetch_assoc()) {
 }
 
 $backpacks = [];
+// AUTO-MIGRATION: Check if product_url column exists (just to be safe for display)
+// Ideally handled in edit_backpack but good to be safe.
+$check_col = $conn->query("SHOW COLUMNS FROM backpacks LIKE 'product_url'");
+$has_product_url = ($check_col && $check_col->num_rows > 0);
+
 $sql = "SELECT b.*, u.username as owner_name 
         FROM backpacks b 
         JOIN users u ON b.user_id = u.id 
@@ -65,7 +69,6 @@ $result = $stmt->get_result();
 while ($row = $result->fetch_assoc()) {
     $backpacks[] = $row;
 }
-
 ?>
 
 <div class="card">
@@ -112,7 +115,6 @@ while ($row = $result->fetch_assoc()) {
 
                                 <!-- Compartments Preview -->
                                 <?php
-                                // Fetch compartment count
                                 $stmt_c = $conn->prepare("SELECT COUNT(*) as cnt FROM backpack_compartments WHERE backpack_id = ?");
                                 $stmt_c->bind_param("i", $bp['id']);
                                 $stmt_c->execute();
@@ -121,16 +123,24 @@ while ($row = $result->fetch_assoc()) {
                                 <p class="small text-muted"><i class="fas fa-layer-group me-1"></i> <?php echo $cnt; ?> Fächer definiert</p>
 
                             </div>
-                            <div class="card-footer bg-transparent border-top-0 d-flex justify-content-end gap-2">
-                                <?php if ($bp['user_id'] == $user_id): ?>
-                                    <a href="edit_backpack.php?id=<?php echo $bp['id']; ?>" class="btn btn-sm btn-outline-primary"><i class="fas fa-edit"></i> Bearbeiten</a>
-                                    <form method="post" onsubmit="return confirm('Rucksack wirklich löschen?');" class="d-inline">
-                                        <input type="hidden" name="delete_backpack_id" value="<?php echo $bp['id']; ?>">
-                                        <button type="submit" class="btn btn-sm btn-outline-danger"><i class="fas fa-trash"></i></button>
-                                    </form>
-                                <?php else: ?>
-                                    <button class="btn btn-sm btn-outline-secondary" disabled>Nur Eigentümer kann bearbeiten</button>
-                                <?php endif; ?>
+                            <div class="card-footer bg-transparent border-top-0 d-flex justify-content-between align-items-center gap-2">
+                                <div>
+                                    <?php if (!empty($bp['product_url'])): ?>
+                                        <a href="<?php echo htmlspecialchars($bp['product_url']); ?>" target="_blank" class="btn btn-sm btn-outline-info" title="Herstellerseite öffnen"><i class="fas fa-external-link-alt"></i> Info</a>
+                                    <?php endif; ?>
+                                </div>
+                                
+                                <div class="d-flex gap-1">
+                                    <?php if ($bp['user_id'] == $user_id): ?>
+                                        <a href="edit_backpack.php?id=<?php echo $bp['id']; ?>" class="btn btn-sm btn-outline-primary"><i class="fas fa-edit"></i></a>
+                                        <form method="post" onsubmit="return confirm('Rucksack wirklich löschen?');" class="d-inline">
+                                            <input type="hidden" name="delete_backpack_id" value="<?php echo $bp['id']; ?>">
+                                            <button type="submit" class="btn btn-sm btn-outline-danger"><i class="fas fa-trash"></i></button>
+                                        </form>
+                                    <?php else: ?>
+                                        <button class="btn btn-sm btn-outline-secondary" disabled><i class="fas fa-lock"></i></button>
+                                    <?php endif; ?>
+                                </div>
                             </div>
                         </div>
                     </div>
@@ -140,4 +150,4 @@ while ($row = $result->fetch_assoc()) {
     </div>
 </div>
 
-<?php require_once 'footer.php'; ?>
+<?php require_once 'footer.php'; ?>
\ No newline at end of file
diff --git a/src/packing_list_detail.php b/src/packing_list_detail.php
index 8bb9270..ec3653c 100644
--- a/src/packing_list_detail.php
+++ b/src/packing_list_detail.php
@@ -1,6 +1,6 @@
 <?php
 // packing_list_detail.php - Detailansicht einer Packliste
-// FINALE, STABILE VERSION: Mit modernem Tree-View, Toggle-Funktion und externem CSS.
+// FINALE, STABILE VERSION: Mit modernem Tree-View, Toggle-Funktion, Grünen Charts & Träger-Modal
 
 if (session_status() == PHP_SESSION_NONE) {
     session_start();
@@ -21,6 +21,9 @@ $weight_by_category = [];
 $weight_by_carrier = [];
 $weight_by_carrier_non_consumable = [];
 
+// Array for Carrier Detailed Stats (Modal)
+$carrier_stats_details = [];
+
 if ($packing_list_id <= 0) {
     die("Keine Packlisten-ID angegeben.");
 }
@@ -57,8 +60,6 @@ $stmt_list_owner->close();
 
 $page_title = "Packliste: " . htmlspecialchars($packing_list['name']);
 
-// Robust SQL: Fetches names from Backpacks/Compartments if article is missing
-// FIX: Include backpack own weight in weight_grams calculation
 $sql = "SELECT 
             pli.id, pli.quantity, pli.parent_packing_list_item_id, pli.carrier_user_id,
             pli.backpack_id, pli.backpack_compartment_id,
@@ -67,7 +68,8 @@ $sql = "SELECT
             a.image_url, a.product_designation, a.consumable,
             c.name AS category_name, 
             m.name AS manufacturer_name, 
-            u.username AS carrier_name
+            u.username AS carrier_name,
+            u.id AS carrier_id
         FROM packing_list_items AS pli 
         LEFT JOIN articles AS a ON pli.article_id = a.id 
         LEFT JOIN backpacks AS bp ON pli.backpack_id = bp.id
@@ -87,9 +89,6 @@ $items_by_id = [];
 $items_by_parent = [];
 
 while ($row = $result->fetch_assoc()) {
-    // Fix Names for Display: Removed redundant prefix logic
-    // if ($row['backpack_id']) $row['article_name'] = "Rucksack: " . $row['article_name'];
-    
     $items_by_id[$row['id']] = $row;
     $parent_id = $row['parent_packing_list_item_id'] ?: 0;
     if (!isset($items_by_parent[$parent_id])) {
@@ -102,6 +101,9 @@ while ($row = $result->fetch_assoc()) {
     $total_weight_grams += $item_weight;
     
     $carrier_name = $row['carrier_name'] ?: 'Sonstiges';
+    $carrier_id = $row['carrier_id'] ?: 0;
+    
+    // Init stats arrays
     if (!isset($weight_by_carrier[$carrier_name])) $weight_by_carrier[$carrier_name] = 0;
     $weight_by_carrier[$carrier_name] += $item_weight;
     
@@ -115,13 +117,33 @@ while ($row = $result->fetch_assoc()) {
         if (!isset($weight_by_carrier_non_consumable[$carrier_name])) $weight_by_carrier_non_consumable[$carrier_name] = 0;
         $weight_by_carrier_non_consumable[$carrier_name] += $item_weight;
     }
+    
+    // Prepare Detailed Stats per Carrier for Modal
+    if (!isset($carrier_stats_details[$carrier_name])) {
+        $carrier_stats_details[$carrier_name] = [
+            'total_weight' => 0,
+            'base_weight' => 0,
+            'consumable_weight' => 0,
+            'categories' => []
+        ];
+    }
+    $carrier_stats_details[$carrier_name]['total_weight'] += $item_weight;
+    if ($row['consumable']) {
+        $carrier_stats_details[$carrier_name]['consumable_weight'] += $item_weight;
+    } else {
+        $carrier_stats_details[$carrier_name]['base_weight'] += $item_weight;
+    }
+    if (!isset($carrier_stats_details[$carrier_name]['categories'][$cat_name])) {
+        $carrier_stats_details[$carrier_name]['categories'][$cat_name] = 0;
+    }
+    $carrier_stats_details[$carrier_name]['categories'][$cat_name] += $item_weight;
 }
 $stmt->close();
 $conn->close();
 
 $total_weight_without_consumables = $total_weight_grams - $total_consumable_weight;
 
-// Helper for recursive counting
+// Helper functions (same as before)
 function get_recursive_quantity($parent_id, $items_by_parent) {
     $count = 0;
     if (isset($items_by_parent[$parent_id])) {
@@ -133,41 +155,35 @@ function get_recursive_quantity($parent_id, $items_by_parent) {
     return $count;
 }
 
-// Helper for recursive weight calculation
 function get_recursive_weight($parent_id, $items_by_parent) {
     $weight = 0;
     if (isset($items_by_parent[$parent_id])) {
         foreach ($items_by_parent[$parent_id] as $child) {
-            // Child weight
             $weight += ($child['quantity'] * $child['weight_grams']);
-            // Plus its descendants
             $weight += get_recursive_weight($child['id'], $items_by_parent);
         }
     }
     return $weight;
 }
 
-// Recursive Rendering
 function render_item_row($item, $level, $items_by_parent) {
     $has_children = isset($items_by_parent[$item['id']]);
     $is_backpack = !empty($item['backpack_id']);
     $is_compartment = !empty($item['backpack_compartment_id']);
     
-    // Visual Styles
     $bg_class = "";
     $text_class = "";
     $icon = "";
     
     if ($is_backpack) {
-        $bg_class = "table-success"; // Greenish for Backpack
+        $bg_class = "table-success"; 
         $text_class = "fw-bold text-uppercase";
         $icon = '<i class="fas fa-hiking me-2 text-success"></i>';
     } elseif ($is_compartment) {
-        $bg_class = "table-light"; // Light gray for Compartment
+        $bg_class = "table-light";
         $text_class = "fw-bold fst-italic text-muted";
         $icon = '<i class="fas fa-folder-open me-2 text-warning"></i>';
     } else {
-        // Standard Item
         $img_src = !empty($item['image_url']) ? htmlspecialchars($item['image_url']) : 'assets/images/keinbild.png';
         $icon = '<img src="' . $img_src . '" class="item-image me-2 article-image-trigger" data-preview-url="' . $img_src . '">';
     }
@@ -175,16 +191,12 @@ function render_item_row($item, $level, $items_by_parent) {
     $indent_px = $level * 25;
     $weight_display = $item['weight_grams'] > 0 ? number_format($item['weight_grams'], 0, ',', '.') . ' g' : '-';
     
-    // Calculate Total Weight display logic
     $total_weight_val = 0;
     if ($is_backpack || $is_compartment) {
-        // For containers: Recursive weight of children
-        // For backpacks specifically: Add own weight + children
         $children_weight = get_recursive_weight($item['id'], $items_by_parent);
-        $own_weight = $item['quantity'] * $item['weight_grams']; // Usually 1 * empty_weight
+        $own_weight = $item['quantity'] * $item['weight_grams'];
         $total_weight_val = $own_weight + $children_weight;
     } else {
-        // Standard items
         $total_weight_val = $item['weight_grams'] * $item['quantity'];
     }
     
@@ -192,13 +204,10 @@ function render_item_row($item, $level, $items_by_parent) {
 
     echo '<tr class="' . $bg_class . '" data-id="' . $item['id'] . '" data-parent-id="' . ($item['parent_packing_list_item_id'] ?: 0) . '">';
     
-    // Name Column with Indentation
     echo '<td>';
     echo '<div style="padding-left: ' . $indent_px . 'px; display: flex; align-items: center;">';
     
-    // Tree Toggle or Spacer
     if ($has_children) {
-        // Explicitly style the button
         echo '<button type="button" class="btn btn-sm p-0 me-2 border-0 bg-transparent text-primary toggle-tree-btn" data-target-id="' . $item['id'] . '" style="width:20px; cursor:pointer;"><i class="fas fa-chevron-down"></i></button>';
     } else {
         echo '<span style="width: 20px; display: inline-block; margin-right: 0.5rem;"></span>';
@@ -209,26 +218,20 @@ function render_item_row($item, $level, $items_by_parent) {
     echo '</div>';
     echo '</td>';
 
-    // Other Columns
     echo '<td class="text-center">' . ($item['consumable'] ? '<i class="fas fa-cookie-bite text-warning" title="Verbrauch"></i>' : '') . '</td>';
     echo '<td>' . htmlspecialchars($item['manufacturer_name'] ?: '') . '</td>';
     echo '<td>' . htmlspecialchars($item['product_designation'] ?: '') . '</td>';
     echo '<td>' . htmlspecialchars($item['category_name'] ?: '') . '</td>';
     
-    // Quantity / Child Count Badge
     echo '<td class="text-center">';
     if ($is_backpack) {
-        // Rucksack: Keine Summe anzeigen (User Wunsch)
         echo '';
     } elseif ($is_compartment) {
-        // Fächer: Rekursive Summe aller enthaltenen Artikel
         $total_items = get_recursive_quantity($item['id'], $items_by_parent);
         if ($total_items > 0) {
-            // Grün, aber gleiche Form wie Standard (kein rounded-pill)
             echo '<span class="badge bg-success text-white border border-success" title="Enthält ' . $total_items . ' Artikel">' . $total_items . '</span>';
         }
     } else {
-        // Standard Artikel Menge
         echo '<span class="badge bg-white text-dark border">' . $item['quantity'] . 'x</span>';
     }
     echo '</td>';
@@ -244,15 +247,6 @@ function render_item_row($item, $level, $items_by_parent) {
         }
     }
 }
-
-function render_print_table_rows($items, $level = 0) {
-    foreach($items as $item) {
-        // Simulate structure for print function which might expect different array format?
-        // Actually, this function is called below with items from $sorted_items_by_carrier which likely won't work 
-        // because we rewrote the main fetching logic to flattened array $items_by_parent.
-        // We need to adapt the print view section below to use $items_by_parent logic.
-    }
-}
 ?>
 <script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
 <script src="https://cdn.jsdelivr.net/npm/chartjs-plugin-datalabels@2.0.0"></script>
@@ -294,7 +288,6 @@ function render_print_table_rows($items, $level = 0) {
                                     <tr><td colspan="8" class="text-center p-4 text-muted">Liste ist leer.</td></tr>
                                 <?php else: ?>
                                     <?php 
-                                    // Group roots by carrier
                                     $items_by_carrier = [];
                                     foreach ($items_by_parent[0] as $root) {
                                         $c = $root['carrier_name'] ?: 'Sonstiges';
@@ -303,7 +296,13 @@ function render_print_table_rows($items, $level = 0) {
                                     
                                     foreach ($items_by_carrier as $carrier => $roots): ?>
                                         <tr class="table-secondary border-bottom border-white">
-                                            <td colspan="8" class="fw-bold text-uppercase ps-3 py-2"><i class="fas fa-user-circle me-2"></i><?php echo htmlspecialchars($carrier); ?></td>
+                                            <td colspan="8" class="fw-bold text-uppercase ps-3 py-2">
+                                                <i class="fas fa-user-circle me-2"></i>
+                                                <a href="#" class="text-dark text-decoration-none carrier-stats-link" data-carrier="<?php echo htmlspecialchars($carrier); ?>">
+                                                    <?php echo htmlspecialchars($carrier); ?>
+                                                    <small class="text-muted ms-2 font-weight-normal">(Klicken für Statistik)</small>
+                                                </a>
+                                            </td>
                                         </tr>
                                         <?php foreach ($roots as $root_item): 
                                             render_item_row($root_item, 0, $items_by_parent);
@@ -341,7 +340,6 @@ function render_print_table_rows($items, $level = 0) {
                         <div class="col-6"><h6 class="text-center small">nach Träger</h6><div class="chart-container"><canvas id="carrierWeightChart"></canvas></div></div>
                     </div>
                     
-                    <!-- Re-added Category Weight Table -->
                     <div class="stats-table-container mt-4">
                         <h6>Gewicht nach Kategorie</h6>
                         <div class="table-responsive">
@@ -366,8 +364,29 @@ function render_print_table_rows($items, $level = 0) {
     </div>
 </div>
 
+<!-- Modal for Carrier Statistics -->
+<div class="modal fade" id="carrierStatsModal" tabindex="-1" aria-labelledby="carrierStatsModalLabel" aria-hidden="true">
+  <div class="modal-dialog">
+    <div class="modal-content">
+      <div class="modal-header">
+        <h5 class="modal-title" id="carrierStatsModalLabel">Statistik für Träger</h5>
+        <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Schließen"></button>
+      </div>
+      <div class="modal-body">
+        <div id="carrier-stats-content">
+            <!-- Populated via JS -->
+        </div>
+      </div>
+    </div>
+  </div>
+</div>
+
 <div id="image-preview-tooltip"></div>
+
 <script>
+// Pass PHP Data to JS
+const carrierStatsData = <?php echo json_encode($carrier_stats_details); ?>;
+
 document.addEventListener('DOMContentLoaded', function() {
     // Tooltip logic
     const tooltip = document.getElementById('image-preview-tooltip');
@@ -387,18 +406,22 @@ document.addEventListener('DOMContentLoaded', function() {
     const tooltipTriggerList = [].slice.call(document.querySelectorAll('[data-bs-toggle="tooltip"]'));
     tooltipTriggerList.map(function (tooltipTriggerEl) { return new bootstrap.Tooltip(tooltipTriggerEl) });
 
-    // Chart logic
+    // Chart logic (GREEN TONES)
     Chart.register(ChartDataLabels);
-    const highContrastColors = ['#00429d', '#4771b2', '#73a2c6', '#a4d3d9', '#deeedb', '#ffc993', '#f48f65', '#d45039', '#930000'];
+    // Green palette ranging from dark to light
+    const greenColors = [
+        '#004d00', '#006600', '#008000', '#009900', '#00b300', 
+        '#00cc00', '#00e600', '#1aff1a', '#4dff4d', '#80ff80', '#b3ffb3'
+    ];
 
     const catCtx = document.getElementById('categoryWeightChart');
     if (catCtx) {
-        new Chart(catCtx, { type: 'doughnut', data: { labels: <?php echo json_encode(array_keys($weight_by_category)); ?>, datasets: [{ data: <?php echo json_encode(array_values($weight_by_category)); ?>, backgroundColor: highContrastColors, borderWidth: 2, hoverOffset: 15 }] }, options: { responsive: true, maintainAspectRatio: false, plugins: { legend: { display: false }, datalabels: { display: false } } } });
+        new Chart(catCtx, { type: 'doughnut', data: { labels: <?php echo json_encode(array_keys($weight_by_category)); ?>, datasets: [{ data: <?php echo json_encode(array_values($weight_by_category)); ?>, backgroundColor: greenColors, borderWidth: 2, hoverOffset: 15 }] }, options: { responsive: true, maintainAspectRatio: false, plugins: { legend: { display: false }, datalabels: { display: false } } } });
     }
 
     const carrierCtx = document.getElementById('carrierWeightChart');
     if (carrierCtx) { 
-        new Chart(carrierCtx, { type: 'doughnut', data: { labels: <?php echo json_encode(array_keys($weight_by_carrier)); ?>, datasets: [{ data: <?php echo json_encode(array_values($weight_by_carrier)); ?>, backgroundColor: highContrastColors, borderWidth: 2, hoverOffset: 15 }] }, options: { responsive: true, maintainAspectRatio: false, plugins: { legend: { display: false }, datalabels: { display: false } } } });
+        new Chart(carrierCtx, { type: 'doughnut', data: { labels: <?php echo json_encode(array_keys($weight_by_carrier)); ?>, datasets: [{ data: <?php echo json_encode(array_values($weight_by_carrier)); ?>, backgroundColor: greenColors, borderWidth: 2, hoverOffset: 15 }] }, options: { responsive: true, maintainAspectRatio: false, plugins: { legend: { display: false }, datalabels: { display: false } } } });
     }
 
     // Collapsible Tree Logic
@@ -433,6 +456,59 @@ document.addEventListener('DOMContentLoaded', function() {
             }
         });
     }
+    
+    // Carrier Stats Modal Logic
+    const statsModal = new bootstrap.Modal(document.getElementById('carrierStatsModal'));
+    document.querySelectorAll('.carrier-stats-link').forEach(link => {
+        link.addEventListener('click', function(e) {
+            e.preventDefault();
+            const carrierName = this.getAttribute('data-carrier');
+            const data = carrierStatsData[carrierName];
+            
+            if (data) {
+                document.getElementById('carrierStatsModalLabel').innerText = 'Statistik für ' + carrierName;
+                
+                // Format Numbers
+                const fmt = (n) => new Intl.NumberFormat('de-DE').format(n) + ' g';
+                
+                let catRows = '';
+                // Sort categories by weight desc
+                const sortedCats = Object.entries(data.categories).sort((a, b) => b[1] - a[1]);
+                
+                sortedCats.forEach(([cat, w]) => {
+                    catRows += `<tr><td>${cat}</td><td class="text-end">${fmt(w)}</td></tr>`;
+                });
+                
+                const content = `
+                    <div class="row mb-3">
+                        <div class="col-6">
+                            <div class="card text-center bg-light h-100">
+                                <div class="card-body py-2">
+                                    <small class="text-muted">Gesamtgewicht</small>
+                                    <h5 class="card-title mb-0 text-primary">${fmt(data.total_weight)}</h5>
+                                </div>
+                            </div>
+                        </div>
+                        <div class="col-6">
+                            <div class="card text-center bg-light h-100">
+                                <div class="card-body py-2">
+                                    <small class="text-muted">Basisgewicht (o. Verb.)</small>
+                                    <h5 class="card-title mb-0 text-success">${fmt(data.base_weight)}</h5>
+                                </div>
+                            </div>
+                        </div>
+                    </div>
+                    <h6 class="border-bottom pb-2">Kategorien</h6>
+                    <table class="table table-sm table-striped">
+                        <tbody>${catRows}</tbody>
+                    </table>
+                `;
+                
+                document.getElementById('carrier-stats-content').innerHTML = content;
+                statsModal.show();
+            }
+        });
+    });
 });
 </script>