Dockerfile: Microsoft Core Fonts und DejaVu für den PDF-Renderer installieren

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Dockerfile

@@ -7,6 +7,14 @@ ENV TZ=Europe/Berlin
 ENV LC_TIME=de_DE.UTF-8
 RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
 
+# Schriften für den PDF-Renderer: Microsoft Core Fonts (Arial, Times New Roman,
+# Courier New, Verdana) sowie DejaVu als Fallback. Die EULA der MS-Fonts wird
+# vorab bestätigt; der Installer lädt die Fonts beim Image-Build herunter.
+RUN echo "ttf-mscorefonts-installer msttcorefonts/accepted-mscorefonts-eula select true" | debconf-set-selections \
+    && apt-get update \
+    && apt-get install -y --no-install-recommends fontconfig fonts-dejavu-core ttf-mscorefonts-installer \
+    && rm -rf /var/lib/apt/lists/*
+
 COPY ${JAR_FILE} app.jar
 EXPOSE 8083
 ENTRYPOINT ["java", "-jar", "/app.jar", "--spring.profiles.active=production"]

src/main/frontend/invoice-generator/profile-invoice-generator.js

@@ -73,7 +73,6 @@ window.initProfileInvoiceGenerator = function() {
   var isDragging = false;
   var dragStart = { x: 0, y: 0 };
   var elementStart = { x: 0, y: 0 };
-  var gridSize = 5;
   
   // Image cache to prevent flickering during resize
   var imageCache = {};
@@ -102,8 +101,43 @@ window.initProfileInvoiceGenerator = function() {
     pageY = (h - pageHeight) / 2;
   }
   
+  // Kein Raster mehr: Positionen werden pixelgenau übernommen
   function snapToGrid(value) {
-    return Math.round(value / gridSize) * gridSize;
+    return value;
+  }
+
+  // Freie Textelemente bleiben beim Verändern der Größe zentriert: Der Text
+  // wird mittig im Rahmen dargestellt (Canvas und PDF nutzen dieselbe
+  // textAlign-Eigenschaft, die Darstellung bleibt also identisch).
+  function keepTextCentered(el) {
+    if (el.type !== 'line' && el.type !== 'image' && !el.isStatic) {
+      el.textAlign = 'center';
+    }
+  }
+
+  // Mindestgröße eines Textelements (Basis-px): der dargestellte Text darf
+  // beim Verkleinern nicht abgeschnitten werden. Für andere Elementtypen
+  // gibt es keine inhaltsabhängige Untergrenze (null).
+  function minTextSize(el) {
+    if (el.type === 'line' || el.type === 'image' || el.variable === 'services.list') {
+      return null;
+    }
+    var fontSize = el.fontSize || 14;
+    ctx.save();
+    ctx.font = ((el.fontStyle || '') + ' ' + fontSize + 'px ' + (el.fontFamily || 'Arial')).trim();
+    var lines = (el.text || '').split('\n');
+    var maxLineWidth = 0;
+    lines.forEach(function(line) {
+      maxLineWidth = Math.max(maxLineWidth, ctx.measureText(line).width);
+    });
+    ctx.restore();
+    // Gleiche Polsterung wie der Auswahlrahmen (Breite +10, Höhe +6): so kann
+    // das Element nie kleiner werden als der gezeichnete Rahmen und der Text
+    // bleibt darin zentriert.
+    return {
+      width: Math.max(20, Math.ceil(maxLineWidth + 10)),
+      height: Math.max(20, Math.ceil(lines.length * fontSize * 1.2 + 6))
+    };
   }
   
   // Notify Java about element selection
@@ -120,7 +154,8 @@ window.initProfileInvoiceGenerator = function() {
         el.width || 100,
         el.height || 30,
         el.isStatic || false,
-        el.variable || null
+        el.variable || null,
+        el.fontFamily || 'Arial'
       );
     }
   }
@@ -130,6 +165,39 @@ window.initProfileInvoiceGenerator = function() {
       window.invoiceGeneratorViewProfile.$server.resetPropertiesPanel();
     }
   }
+
+  // Klick auf die leere Zeichenfläche: Canvas-Einstellungen in der Sidebar anzeigen
+  function notifyCanvasSelected() {
+    if (window.invoiceGeneratorViewProfile && window.invoiceGeneratorViewProfile.$server) {
+      window.invoiceGeneratorViewProfile.$server.showCanvasProperties(
+          !!window.profileInvoiceState.backgroundImage);
+    }
+  }
+
+  // Entprellter Autosave: sichert den Canvas-Stand serverseitig, damit nach
+  // einem Seiten-Reload (z. B. durch Session-Ablauf) nichts verloren geht.
+  // Erst aktiv, nachdem der initiale Stand geladen wurde, damit ein leeres
+  // Canvas keinen vorhandenen Autosave überschreibt.
+  var autosaveTimer = null;
+  var lastAutosaved = null;
+  var autosaveEnabled = false;
+
+  function scheduleAutosave() {
+    if (!autosaveEnabled) return;
+    if (autosaveTimer) clearTimeout(autosaveTimer);
+    autosaveTimer = setTimeout(function() {
+      try {
+        var snapshot = JSON.stringify(window.getProfileCanvasData());
+        if (snapshot === lastAutosaved) return;
+        lastAutosaved = snapshot;
+        if (window.invoiceGeneratorViewProfile && window.invoiceGeneratorViewProfile.$server) {
+          window.invoiceGeneratorViewProfile.$server.autosaveCanvas(snapshot);
+        }
+      } catch (err) {
+        console.error('Autosave fehlgeschlagen:', err);
+      }
+    }, 2000);
+  }
   
   // Draw function
   function draw() {
@@ -155,24 +223,22 @@ window.initProfileInvoiceGenerator = function() {
     ctx.strokeStyle = '#cccccc';
     ctx.lineWidth = 1;
     ctx.strokeRect(pageX, pageY, pageWidth, pageHeight);
-    
+
-    // Grid (scaled by zoom factor)
+    // Hintergrundbild: auf Seitengröße skaliert, hinter allen Elementen
-    ctx.strokeStyle = 'rgba(200, 200, 200, 0.3)';
+    var backgroundImage = window.profileInvoiceState.backgroundImage;
-    ctx.lineWidth = 0.5;
+    if (backgroundImage) {
-    var scaledGridSize = gridSize * zoomFactor;
+      if (imageCache[backgroundImage]) {
-    for (var x = pageX; x <= pageX + pageWidth; x += scaledGridSize) {
+        ctx.drawImage(imageCache[backgroundImage], pageX, pageY, pageWidth, pageHeight);
-      ctx.beginPath();
+      } else {
-      ctx.moveTo(x, pageY);
+        var bgImg = new Image();
-      ctx.lineTo(x, pageY + pageHeight);
+        bgImg.onload = function() {
-      ctx.stroke();
+          imageCache[backgroundImage] = bgImg;
+          draw();
+        };
+        bgImg.src = backgroundImage;
+      }
     }
-    for (var y = pageY; y <= pageY + pageHeight; y += scaledGridSize) {
+
-      ctx.beginPath();
-      ctx.moveTo(pageX, y);
-      ctx.lineTo(pageX + pageWidth, y);
-      ctx.stroke();
-    }
-    
     // Draw elements
     console.log('Drawing', elements.length, 'elements');
     elements.forEach(function(el) {
@@ -184,6 +250,8 @@ window.initProfileInvoiceGenerator = function() {
     if (selectedElement) {
       drawSelection(selectedElement);
     }
+
+    scheduleAutosave();
   }
   
   function drawElement(el) {
@@ -282,23 +350,36 @@ window.initProfileInvoiceGenerator = function() {
       // Vertically center the text in the element
       var ty = y + (h - totalTextHeight) / 2;
       
-      // Draw background highlight for static elements
+      // Masterdata elements are never bold; other elements respect their fontStyle
+      var fontWeight = (el.isStatic && !el.isCustomer) ? '' : (el.fontStyle || '');
+      // Set the font BEFORE measuring text, so the highlight width matches
+      ctx.font = (fontWeight ? fontWeight + ' ' : '') + fontSize + 'px ' + (el.fontFamily || 'Arial');
+
+      // Draw background highlight for static elements, fitted to the widest
+      // text line (not the element width) and following the text alignment
       if (el.isStatic) {
-        var textWidth = ctx.measureText(el.text || '').width + (10 * zoomFactor);
+        var maxLineWidth = 0;
+        lines.forEach(function(line) {
+          maxLineWidth = Math.max(maxLineWidth, ctx.measureText(line).width);
+        });
+        var bgWidth = maxLineWidth + (10 * zoomFactor);
+        var bgX = x - (3 * zoomFactor);
+        if (textAlign === 'center') {
+          bgX = x + (w - bgWidth) / 2;
+        } else if (textAlign === 'right') {
+          bgX = x + w - bgWidth + (3 * zoomFactor);
+        }
         // Different background colors: green for customer, blue for masterdata
         if (el.isCustomer) {
           ctx.fillStyle = 'rgba(46, 204, 113, 0.15)'; // Light green for customer
         } else {
           ctx.fillStyle = 'rgba(25, 118, 210, 0.1)'; // Light blue for masterdata
         }
-        ctx.fillRect(x - (3 * zoomFactor), y - (2 * zoomFactor), Math.max(w, textWidth), h);
+        ctx.fillRect(bgX, y - (2 * zoomFactor), bgWidth, h);
       }
-      
+
-      // Always use black text for static elements, otherwise use element color
+      // Die gewählte Elementfarbe verwenden — wie im gerenderten PDF
-      ctx.fillStyle = el.isStatic ? '#000000' : (el.color || '#333333');
+      ctx.fillStyle = el.color || '#333333';
-      // Masterdata elements are never bold; other elements respect their fontStyle
-      var fontWeight = (el.isStatic && !el.isCustomer) ? '' : (el.fontStyle || '');
-      ctx.font = (fontWeight ? fontWeight + ' ' : '') + fontSize + 'px Arial';
       ctx.textBaseline = 'top';
       ctx.textAlign = textAlign;
 
@@ -318,140 +399,94 @@ window.initProfileInvoiceGenerator = function() {
     ctx.restore();
   }
   
-  // Draw services list as a table with columns: Name, Steuersatz, Nettobetrag
+  // Positionsliste im Briefbogen-Layout: Spalten Menge, Bezeichnung,
-  // Plus summary section below: Nettosumme, USt, Gesamtsumme
+  // Einzelpreis und Gesamt, durchgezogene Spaltenlinien bis zum Summenblock
+  // und die Summen (Nettobetrag, MwSt., Endbetrag) rechts unten.
   function drawServicesTable(el, x, y, w, h, fontSize) {
+    var fontFamily = el.fontFamily || 'Arial';
     var lineHeight = fontSize * 1.4;
     var padding = 4 * zoomFactor;
     var rowHeight = lineHeight + padding * 2;
     var summaryRowHeight = fontSize * 1.6;
     var summaryGap = fontSize * 0.5;
-    
+
-    // Column widths (percentages of total width)
+    // Spaltengrenzen wie im PDF-Renderer (9 / 61 / 15 / 15 Prozent)
-    var colNameWidth = w * 0.55;      // 55% for Name (left-aligned)
+    var xName = x + w * 0.09;
-    var colVatWidth = w * 0.20;       // 20% for Steuersatz (right-aligned)
+    var xUnit = x + w * 0.70;
-    var colNetWidth = w * 0.25;       // 25% for Nettobetrag (right-aligned)
+    var xTotal = x + w * 0.85;
-    
+
-    var colNameX = x;
-    var colVatX = x + colNameWidth;
-    var colNetX = colVatX + colVatWidth;
-    
     var vatRate = (window.profileInvoiceVatRate != null) ? window.profileInvoiceVatRate : 0.19;
     var vatPctLabel = (Math.round(vatRate * 10000) / 100).toString().replace('.', ',') + '%';
 
-    // Rows come from window.profileInvoiceServiceData when provided (system
-    // invoice template: the three admin price table positions); otherwise
-    // fall back to sample data (per-user profile invoice generator)
     var serviceData = window.profileInvoiceServiceData;
     var rows = (serviceData && serviceData.rows && serviceData.rows.length)
       ? serviceData.rows
       : [
-          { name: 'Umzugsleistung inkl. Verpackung', vat: vatPctLabel, net: '450,00 €' },
+          { quantity: '1', name: 'Umzugsleistung inkl. Verpackung', unitPrice: '450,00 \u20ac', net: '450,00 \u20ac' },
-          { name: 'Entsorgung Möbel', vat: vatPctLabel, net: '85,00 €' },
+          { quantity: '1', name: 'Entsorgung M\u00f6bel', unitPrice: '85,00 \u20ac', net: '85,00 \u20ac' },
-          { name: 'Montage/De-Montage', vat: vatPctLabel, net: '120,00 €' }
+          { quantity: '1', name: 'Montage/De-Montage', unitPrice: '120,00 \u20ac', net: '120,00 \u20ac' }
         ];
 
-    // Calculate actual content height based on table + summary
+    // Mindesthoehe: Kopf + Zeilen + Summenblock; ist das Element hoeher,
-    var tableOnlyHeight = rowHeight * (rows.length + 1); // Header + data rows
+    // laufen die Spaltenlinien entsprechend weiter nach unten
-    var summaryOnlyHeight = summaryGap + (summaryRowHeight * 3) + summaryGap + summaryRowHeight + summaryGap;
+    var summaryHeight = 3 * summaryRowHeight + summaryGap;
-    var calculatedContentHeight = tableOnlyHeight + summaryOnlyHeight;
+    var minHeight = rowHeight * (rows.length + 1) + summaryHeight;
-    // Ensure background covers at least the element height or the calculated content
+    var totalHeight = Math.max(h, minHeight);
-    var bgHeight = Math.max(h, calculatedContentHeight * zoomFactor);
+    var bodyBottom = y + totalHeight - summaryHeight;
-    
+
-    // Draw orange background highlight for entire service variable element
+    // Orangefarbene Markierung des gesamten Bausteins (nur im Designer)
     var bgPadding = 3 * zoomFactor;
     ctx.fillStyle = 'rgba(255, 152, 0, 0.15)';
-    ctx.fillRect(x - bgPadding, y - (2 * zoomFactor), w + (2 * bgPadding), bgHeight + (4 * zoomFactor));
+    ctx.fillRect(x - bgPadding, y - (2 * zoomFactor), w + (2 * bgPadding), totalHeight + (4 * zoomFactor));
-    
-    // Draw table header (overlays the background)
-    ctx.fillStyle = '#f5f5f5';
-    ctx.fillRect(x, y, w, rowHeight);
-    
-    // Header border
-    ctx.strokeStyle = '#cccccc';
-    ctx.lineWidth = Math.max(0.5, zoomFactor);
-    ctx.beginPath();
-    ctx.moveTo(x, y + rowHeight);
-    ctx.lineTo(x + w, y + rowHeight);
-    ctx.stroke();
-    
-    // Header text
-    ctx.fillStyle = '#333333';
-    ctx.font = 'bold ' + fontSize + 'px Arial';
-    ctx.textBaseline = 'middle';
-    
-    // Name column header (left-aligned)
-    ctx.textAlign = 'left';
-    ctx.fillText('Name', colNameX + padding, y + rowHeight / 2);
-    
-    // Steuersatz column header (right-aligned)
-    ctx.textAlign = 'right';
-    ctx.fillText('Steuersatz', colVatX + colVatWidth - padding, y + rowHeight / 2);
-    
-    // Nettobetrag column header (right-aligned)
-    ctx.fillText('Nettobetrag', colNetX + colNetWidth - padding, y + rowHeight / 2);
-    
-    var currentY = y + rowHeight;
 
-    // Draw data rows
+    // Kopfzeile: graue Flaeche mit kleinen Beschriftungen
-    ctx.font = fontSize + 'px Arial';
+    ctx.fillStyle = '#eeeeee';
-    rows.forEach(function(row, index) {
+    ctx.fillRect(x, y, w, rowHeight);
-      // Draw row background (alternating)
+
-      if (index % 2 === 1) {
+    ctx.fillStyle = '#333333';
-        ctx.fillStyle = 'rgba(0,0,0,0.02)';
+    ctx.font = (fontSize * 0.75) + 'px ' + fontFamily;
-        ctx.fillRect(x, currentY, w, rowHeight);
+    ctx.textBaseline = 'middle';
-      }
+    ctx.textAlign = 'left';
-      
+    ctx.fillText('Menge', x + padding, y + rowHeight / 2);
-      // Row bottom border
+    ctx.fillText('Bezeichnung', xName + padding, y + rowHeight / 2);
-      ctx.strokeStyle = '#eeeeee';
+    ctx.fillText('Einzelpreis', xUnit + padding, y + rowHeight / 2);
-      ctx.lineWidth = Math.max(0.5, zoomFactor * 0.5);
+    ctx.fillText('Gesamt', xTotal + padding, y + rowHeight / 2);
-      ctx.beginPath();
+
-      ctx.moveTo(x, currentY + rowHeight);
+    // Datenzeilen
-      ctx.lineTo(x + w, currentY + rowHeight);
+    var currentY = y + rowHeight;
-      ctx.stroke();
+    ctx.font = fontSize + 'px ' + fontFamily;
-      
+    rows.forEach(function(row) {
-      // Draw cell text
       ctx.fillStyle = '#333333';
-      
+      ctx.textAlign = 'center';
-      // Name (left-aligned)
+      ctx.fillText(row.quantity || '', x + (xName - x) / 2, currentY + rowHeight / 2);
       ctx.textAlign = 'left';
-      ctx.fillText(row.name, colNameX + padding, currentY + rowHeight / 2);
+      ctx.fillText(row.name || '', xName + padding, currentY + rowHeight / 2);
-      
-      // Steuersatz (right-aligned)
       ctx.textAlign = 'right';
-      ctx.fillText(row.vat, colVatX + colVatWidth - padding, currentY + rowHeight / 2);
+      ctx.fillText(row.unitPrice || '', xTotal - padding, currentY + rowHeight / 2);
-      
+      ctx.fillText(row.net || '', x + w - padding, currentY + rowHeight / 2);
-      // Nettobetrag (right-aligned)
-      ctx.fillText(row.net, colNetX + colNetWidth - padding, currentY + rowHeight / 2);
-      
       currentY += rowHeight;
     });
-    
+
-    // Draw column separator lines
+    // Spaltenlinien vom Kopf bis zum Summenblock (inkl. Abstand davor,
-    ctx.strokeStyle = '#e0e0e0';
+    // damit keine Luecke zur ersten Summenzeile entsteht). X-Koordinaten
-    ctx.lineWidth = Math.max(0.5, zoomFactor * 0.5);
+    // aufs Pixelraster einrasten (n + 0,5), sonst verwischt der Browser
+    // die 1px-Linien je nach Subpixel-Lage zu breiten grauen Baendern.
+    var linesBottom = bodyBottom + summaryGap;
+    var lineXName = Math.round(xName) + 0.5;
+    var lineXUnit = Math.round(xUnit) + 0.5;
+    var lineXTotal = Math.round(xTotal) + 0.5;
+    ctx.strokeStyle = '#000000';
+    ctx.lineWidth = 1;
     ctx.beginPath();
-    // Line between Name and Steuersatz
+    ctx.moveTo(lineXName, y);
-    ctx.moveTo(colVatX, y);
+    ctx.lineTo(lineXName, linesBottom);
-    ctx.lineTo(colVatX, currentY);
+    ctx.moveTo(lineXUnit, y);
-    // Line between Steuersatz and Nettobetrag
+    ctx.lineTo(lineXUnit, linesBottom);
-    ctx.moveTo(colNetX, y);
+    ctx.moveTo(lineXTotal, y);
-    ctx.lineTo(colNetX, currentY);
+    ctx.lineTo(lineXTotal, linesBottom);
     ctx.stroke();
-    
+
-    // Draw outer border around table
+    // Summen: Nettobetrag, MwSt., Endbetrag rechts unten
-    ctx.strokeStyle = '#cccccc';
-    ctx.lineWidth = Math.max(0.5, zoomFactor);
-    ctx.strokeRect(x, y, w, currentY - y);
-    
-    // Draw summary section below the table
-    var summaryY = currentY + summaryGap;
-    
-    // Column positions for summary section
-    var labelX = x + colNameWidth + colVatWidth * 0.3; // Label column (left-aligned)
-    var valueX = x + w - padding; // Value column (right-aligned)
-    
-    // Totals: provided with the service data or calculated from sample data
     var netTotalLabel, vatTotalLabel, grossTotalLabel;
     if (serviceData && serviceData.netTotal) {
       netTotalLabel = serviceData.netTotal;
@@ -460,43 +495,43 @@ window.initProfileInvoiceGenerator = function() {
     } else {
       var netTotal = 655.00; // 450 + 85 + 120
       var vatTotal = netTotal * vatRate;
-      netTotalLabel = netTotal.toFixed(2).replace('.', ',') + ' €';
+      netTotalLabel = netTotal.toFixed(2).replace('.', ',') + ' \u20ac';
-      vatTotalLabel = vatTotal.toFixed(2).replace('.', ',') + ' €';
+      vatTotalLabel = vatTotal.toFixed(2).replace('.', ',') + ' \u20ac';
-      grossTotalLabel = (netTotal + vatTotal).toFixed(2).replace('.', ',') + ' €';
+      grossTotalLabel = (netTotal + vatTotal).toFixed(2).replace('.', ',') + ' \u20ac';
     }
 
-    // Draw summary lines
+    var summaryRows = [
+      { label: 'Nettobetrag', value: netTotalLabel, shaded: true },
+      { label: '+ ' + vatPctLabel + ' MwSt.', value: vatTotalLabel, shaded: false },
+      { label: 'Endbetrag', value: grossTotalLabel, shaded: true }
+    ];
+
+    var summaryY = bodyBottom + summaryGap;
     ctx.textBaseline = 'middle';
-    
+    summaryRows.forEach(function(row) {
-    // Nettosumme - label left, value right
+      if (row.shaded) {
-    ctx.fillStyle = '#333333';
+        ctx.fillStyle = '#eeeeee';
-    ctx.font = fontSize + 'px Arial';
+        ctx.fillRect(xUnit, summaryY, x + w - xUnit, summaryRowHeight);
-    ctx.textAlign = 'left';
+      }
-    ctx.fillText('Nettosumme:', labelX, summaryY + summaryRowHeight / 2);
+      // Fortsetzung der Spaltenlinie links neben den Summen-Labels
-    ctx.font = 'bold ' + fontSize + 'px Arial';
+      // (gleiche eingerastete X-Koordinate wie die Spaltenlinie darueber)
-    ctx.textAlign = 'right';
+      ctx.strokeStyle = '#000000';
-    ctx.fillText(netTotalLabel, valueX, summaryY + summaryRowHeight / 2);
+      ctx.lineWidth = 1;
-    summaryY += summaryRowHeight;
+      ctx.beginPath();
+      ctx.moveTo(Math.round(xUnit) + 0.5, summaryY);
+      ctx.lineTo(Math.round(xUnit) + 0.5, summaryY + summaryRowHeight);
+      ctx.stroke();
 
-    // Umsatzsteuer - label left, value right
+      ctx.fillStyle = '#333333';
-    ctx.font = fontSize + 'px Arial';
+      ctx.font = fontSize + 'px ' + fontFamily;
-    ctx.textAlign = 'left';
+      ctx.textAlign = 'left';
-    ctx.fillText('zzgl. ' + vatPctLabel + ' USt:', labelX, summaryY + summaryRowHeight / 2);
+      ctx.fillText(row.label, xUnit + padding, summaryY + summaryRowHeight / 2);
-    ctx.font = 'bold ' + fontSize + 'px Arial';
+      ctx.textAlign = 'right';
-    ctx.textAlign = 'right';
+      ctx.fillText(row.value, x + w - padding, summaryY + summaryRowHeight / 2);
-    ctx.fillText(vatTotalLabel, valueX, summaryY + summaryRowHeight / 2);
+      summaryY += summaryRowHeight;
-    summaryY += summaryRowHeight;
+    });
-
-    // Gesamtsumme - label left, value right
-    summaryY += summaryGap; // Extra gap before total
-    ctx.fillStyle = '#000000';
-    ctx.font = 'bold ' + (fontSize * 1.1) + 'px Arial';
-    ctx.textAlign = 'left';
-    ctx.fillText('Gesamtsumme:', labelX, summaryY + summaryRowHeight / 2);
-    ctx.textAlign = 'right';
-    ctx.fillText(grossTotalLabel, valueX, summaryY + summaryRowHeight / 2);
   }
-  
+
   function drawSelection(el) {
     var x = pageX + (el.x * zoomFactor);
     var y = pageY + (el.y * zoomFactor);
@@ -506,7 +541,7 @@ window.initProfileInvoiceGenerator = function() {
     // For text elements, calculate actual text dimensions
     if (el.type !== 'line' && el.type !== 'image') {
       var fontSize = (el.fontSize || 14) * zoomFactor;
-      ctx.font = (el.fontStyle || '') + ' ' + fontSize + 'px Arial';
+      ctx.font = (el.fontStyle || '') + ' ' + fontSize + 'px ' + (el.fontFamily || 'Arial');
       
       // For services.list, calculate table height including summary section
       if (el.variable === 'services.list') {
@@ -516,7 +551,7 @@ window.initProfileInvoiceGenerator = function() {
         var tableHeight = rowHeight + 3 * rowHeight; // Header + 3 rows
         var summaryRowHeight = fontSize * 1.6;
         var summaryGap = fontSize * 0.5;
-        var summaryHeight = summaryGap + (summaryRowHeight * 3) + summaryGap + summaryRowHeight + summaryGap;
+        var summaryHeight = 3 * summaryRowHeight + summaryGap;
         var totalHeight = tableHeight + summaryHeight;
         h = Math.max(h, totalHeight);
       } else {
@@ -571,44 +606,60 @@ window.initProfileInvoiceGenerator = function() {
     });
   }
   
+  // Der anklickbare Bereich entspricht dem dargestellten Inhalt, nicht dem
+  // (ggf. größeren) Elementrahmen.
   function hitTest(x, y, el) {
     var ex = pageX + (el.x * zoomFactor);
     var ey = pageY + (el.y * zoomFactor);
     var ew = (el.width || 100) * zoomFactor;
     var eh = (el.height || 30) * zoomFactor;
-    
+
-    // For text elements, calculate actual text dimensions for hit testing
+    if (el.type === 'line') {
-    if (el.type !== 'line' && el.type !== 'image') {
+      // Nur die gezeichnete Linie, mit kleiner vertikaler Toleranz
-      var fontSize = (el.fontSize || 14) * zoomFactor;
+      var tolerance = Math.max(3, 4 * zoomFactor);
-      ctx.font = (el.fontStyle || '') + ' ' + fontSize + 'px Arial';
+      return x >= ex && x <= ex + ew && y >= ey - tolerance && y <= ey + tolerance;
-      
-      // For services.list, calculate table height
-      if (el.variable === 'services.list') {
-        var lineHeight = fontSize * 1.4;
-        var padding = 4 * zoomFactor;
-        var rowHeight = lineHeight + padding * 2;
-        var tableHeight = rowHeight + 3 * rowHeight; // Header + 3 rows
-        var summaryRowHeight = fontSize * 1.6;
-        var summaryGap = fontSize * 0.5;
-        var summaryHeight = summaryGap + (summaryRowHeight * 3) + summaryGap + summaryRowHeight + summaryGap;
-        eh = Math.max(eh, tableHeight + summaryHeight);
-      } else {
-        var lines = (el.text || '').split('\n');
-        var maxLineWidth = 0;
-        lines.forEach(function(line) {
-          var lineWidth = ctx.measureText(line).width;
-          maxLineWidth = Math.max(maxLineWidth, lineWidth);
-        });
-        
-        ew = Math.max(ew, maxLineWidth + (10 * zoomFactor));
-        
-        var lineHeight = fontSize * 1.2;
-        var textHeight = lines.length * lineHeight;
-        eh = Math.max(eh, textHeight + (6 * zoomFactor));
-      }
     }
-    
+    if (el.type === 'image') {
-    return x >= ex && x <= ex + ew && y >= ey && y <= ey + eh;
+      return x >= ex && x <= ex + ew && y >= ey && y <= ey + eh;
+    }
+
+    var fontSize = (el.fontSize || 14) * zoomFactor;
+    ctx.font = (el.fontStyle || '') + ' ' + fontSize + 'px ' + (el.fontFamily || 'Arial');
+
+    // services.list: die Tabelle füllt die Elementbreite, Höhe wie gezeichnet
+    if (el.variable === 'services.list') {
+      var lineHeight = fontSize * 1.4;
+      var padding = 4 * zoomFactor;
+      var rowHeight = lineHeight + padding * 2;
+      var tableHeight = rowHeight + 3 * rowHeight; // Header + 3 rows
+      var summaryRowHeight = fontSize * 1.6;
+      var summaryGap = fontSize * 0.5;
+      var summaryHeight = 3 * summaryRowHeight + summaryGap;
+      eh = Math.max(eh, tableHeight + summaryHeight);
+      return x >= ex && x <= ex + ew && y >= ey && y <= ey + eh;
+    }
+
+    // Textelemente: Maße des gezeichneten Texts (breiteste Zeile, Zeilenhöhe),
+    // horizontal gemäß Ausrichtung, vertikal zentriert wie beim Zeichnen
+    var lines = (el.text || '').split('\n');
+    var maxLineWidth = 0;
+    lines.forEach(function(line) {
+      maxLineWidth = Math.max(maxLineWidth, ctx.measureText(line).width);
+    });
+    var textHeight = lines.length * fontSize * 1.2;
+
+    var textAlign = el.textAlign || 'left';
+    var contentX = ex;
+    if (textAlign === 'center') {
+      contentX = ex + (ew - maxLineWidth) / 2;
+    } else if (textAlign === 'right') {
+      contentX = ex + ew - maxLineWidth;
+    }
+    var contentY = ey + (eh - textHeight) / 2;
+
+    var pad = 3 * zoomFactor;
+    return x >= contentX - pad && x <= contentX + maxLineWidth + pad
+        && y >= contentY - pad && y <= contentY + textHeight + pad;
   }
   
   // Resizing state
@@ -636,7 +687,7 @@ window.initProfileInvoiceGenerator = function() {
       var tableHeight = rowHeight + 3 * rowHeight; // Header + 3 rows
       var summaryRowHeight = fontSize * 1.6;
       var summaryGap = fontSize * 0.5;
-      var summaryHeight = summaryGap + (summaryRowHeight * 3) + summaryGap + summaryRowHeight + summaryGap;
+      var summaryHeight = 3 * summaryRowHeight + summaryGap;
       eh = Math.max(eh, tableHeight + summaryHeight);
     }
     
@@ -708,8 +759,9 @@ window.initProfileInvoiceGenerator = function() {
       canvas.style.cursor = 'move';
       notifyElementSelected(selectedElement);
     } else {
+      // Klick auf die leere Zeichenfläche: Canvas-Einstellungen anzeigen
       selectedElement = null;
-      notifyElementDeselected();
+      notifyCanvasSelected();
     }
     
     draw();
@@ -724,47 +776,53 @@ window.initProfileInvoiceGenerator = function() {
       // Calculate delta in base coordinates
       var dx = (x - resizeStart.x) / zoomFactor;
       var dy = (y - resizeStart.y) / zoomFactor;
-      
+
       var newWidth = resizeStart.width;
       var newHeight = resizeStart.height;
       var newX = resizeStart.elemX;
       var newY = resizeStart.elemY;
-      
+
+      // Textelemente lassen sich nur bis zur Größe des dargestellten Texts
+      // verkleinern; alle anderen Typen behalten das bisherige Minimum.
+      var minSize = minTextSize(selectedElement);
+      var minW = minSize ? minSize.width : 20;
+      var minH = minSize ? minSize.height : 20;
+
       // Handle indices: 0=TL, 1=TC, 2=TR, 3=ML, 4=MR, 5=BL, 6=BC, 7=BR
       switch(resizeHandle) {
         case 0: // Top-left
-          newWidth = Math.max(20, resizeStart.width - dx);
+          newWidth = Math.max(minW, resizeStart.width - dx);
-          newHeight = Math.max(20, resizeStart.height - dy);
+          newHeight = Math.max(minH, resizeStart.height - dy);
           newX = resizeStart.elemX + (resizeStart.width - newWidth);
           newY = resizeStart.elemY + (resizeStart.height - newHeight);
           break;
         case 1: // Top-center
-          newHeight = Math.max(20, resizeStart.height - dy);
+          newHeight = Math.max(minH, resizeStart.height - dy);
           newY = resizeStart.elemY + (resizeStart.height - newHeight);
           break;
         case 2: // Top-right
-          newWidth = Math.max(20, resizeStart.width + dx);
+          newWidth = Math.max(minW, resizeStart.width + dx);
-          newHeight = Math.max(20, resizeStart.height - dy);
+          newHeight = Math.max(minH, resizeStart.height - dy);
           newY = resizeStart.elemY + (resizeStart.height - newHeight);
           break;
         case 3: // Middle-left
-          newWidth = Math.max(20, resizeStart.width - dx);
+          newWidth = Math.max(minW, resizeStart.width - dx);
           newX = resizeStart.elemX + (resizeStart.width - newWidth);
           break;
         case 4: // Middle-right
-          newWidth = Math.max(20, resizeStart.width + dx);
+          newWidth = Math.max(minW, resizeStart.width + dx);
           break;
         case 5: // Bottom-left
-          newWidth = Math.max(20, resizeStart.width - dx);
+          newWidth = Math.max(minW, resizeStart.width - dx);
-          newHeight = Math.max(20, resizeStart.height + dy);
+          newHeight = Math.max(minH, resizeStart.height + dy);
           newX = resizeStart.elemX + (resizeStart.width - newWidth);
           break;
         case 6: // Bottom-center
-          newHeight = Math.max(20, resizeStart.height + dy);
+          newHeight = Math.max(minH, resizeStart.height + dy);
           break;
         case 7: // Bottom-right
-          newWidth = Math.max(20, resizeStart.width + dx);
+          newWidth = Math.max(minW, resizeStart.width + dx);
-          newHeight = Math.max(20, resizeStart.height + dy);
+          newHeight = Math.max(minH, resizeStart.height + dy);
           break;
       }
       
@@ -772,7 +830,8 @@ window.initProfileInvoiceGenerator = function() {
       selectedElement.height = snapToGrid(newHeight);
       selectedElement.x = snapToGrid(newX);
       selectedElement.y = snapToGrid(newY);
-      
+      keepTextCentered(selectedElement);
+
       draw();
       notifyElementSelected(selectedElement);
     } else if (isDragging && selectedElement) {
@@ -856,40 +915,29 @@ window.initProfileInvoiceGenerator = function() {
 
     var moved = false;
 
+    // Pfeiltasten bewegen um 0,1 mm, mit Shift um 0,5 mm (A4: 210 x 297 mm)
+    var stepMm = e.shiftKey ? 0.5 : 0.1;
+    var stepX = stepMm / 210 * basePageWidth;
+    var stepY = stepMm / 297 * basePageHeight;
+
     switch(e.key) {
       case 'ArrowUp':
-        if (e.shiftKey) {
+        selectedElement.y = Math.max(0, selectedElement.y - stepY);
-          selectedElement.y = Math.max(0, selectedElement.y - 1);
-        } else {
-          selectedElement.y = Math.max(0, Math.floor((selectedElement.y - 1) / gridSize) * gridSize);
-        }
         moved = true;
         e.preventDefault();
         break;
       case 'ArrowDown':
-        if (e.shiftKey) {
+        selectedElement.y = Math.min(basePageHeight - (selectedElement.height || 30), selectedElement.y + stepY);
-          selectedElement.y = Math.min(basePageHeight - (selectedElement.height || 30), selectedElement.y + 1);
-        } else {
-          selectedElement.y = Math.min(basePageHeight - (selectedElement.height || 30), Math.ceil((selectedElement.y + 1) / gridSize) * gridSize);
-        }
         moved = true;
         e.preventDefault();
         break;
       case 'ArrowLeft':
-        if (e.shiftKey) {
+        selectedElement.x = Math.max(0, selectedElement.x - stepX);
-          selectedElement.x = Math.max(0, selectedElement.x - 1);
-        } else {
-          selectedElement.x = Math.max(0, Math.floor((selectedElement.x - 1) / gridSize) * gridSize);
-        }
         moved = true;
         e.preventDefault();
         break;
       case 'ArrowRight':
-        if (e.shiftKey) {
+        selectedElement.x = Math.min(basePageWidth - (selectedElement.width || 100), selectedElement.x + stepX);
-          selectedElement.x = Math.min(basePageWidth - (selectedElement.width || 100), selectedElement.x + 1);
-        } else {
-          selectedElement.x = Math.min(basePageWidth - (selectedElement.width || 100), Math.ceil((selectedElement.x + 1) / gridSize) * gridSize);
-        }
         moved = true;
         e.preventDefault();
         break;
@@ -933,6 +981,7 @@ window.initProfileInvoiceGenerator = function() {
       width: 150,
       height: 30,
       fontSize: 14,
+      fontFamily: 'Arial',
       color: '#333333',
       isStatic: isStatic || false,
       variable: variable || null,
@@ -959,7 +1008,7 @@ window.initProfileInvoiceGenerator = function() {
         var tableHeight = rowHeight + 3 * rowHeight; // Header + 3 sample rows
         var summaryRowHeight = el.fontSize * 1.6;
         var summaryGap = el.fontSize * 0.5;
-        var summaryHeight = summaryGap + (summaryRowHeight * 3) + summaryGap + summaryRowHeight + summaryGap;
+        var summaryHeight = 3 * summaryRowHeight + summaryGap;
         var totalHeight = tableHeight + summaryHeight;
         el.height = Math.round(totalHeight);
       } else {
@@ -1019,6 +1068,7 @@ window.initProfileInvoiceGenerator = function() {
     
     elements.push(el);
     selectedElement = el;
+    autosaveEnabled = true;
     draw();
     notifyElementSelected(el);
     
@@ -1032,6 +1082,46 @@ window.initProfileInvoiceGenerator = function() {
     if (el) {
       pushUndoState();
       el.text = text;
+      // Höhe an die Zeilenzahl anpassen, damit mehrzeiliger Text ins Element
+      // passt; Breite mindestens auf die breiteste Zeile aufweiten
+      if (el.type !== 'line' && el.type !== 'image') {
+        var lines = (text || '').split('\n');
+        var lineHeight = (el.fontSize || 14) * 1.2;
+        el.height = Math.round(lines.length * lineHeight + 6);
+        var minSize = minTextSize(el);
+        if (minSize) {
+          el.width = Math.max(el.width || 0, minSize.width);
+        }
+      }
+      draw();
+    }
+  };
+
+  window.updateProfileElementSize = function(id, width, height) {
+    var el = elements.find(function(e) { return e.id === id; });
+    if (el) {
+      pushUndoState();
+      var minSize = minTextSize(el);
+      var minW = minSize ? minSize.width : 1;
+      var minH = minSize ? minSize.height : 1;
+      if (width !== null) el.width = Math.max(minW, width);
+      if (height !== null) el.height = Math.max(minH, height);
+      keepTextCentered(el);
+      draw();
+    }
+  };
+
+  window.updateProfileElementFontFamily = function(id, family) {
+    var el = elements.find(function(e) { return e.id === id; });
+    if (el) {
+      pushUndoState();
+      el.fontFamily = family;
+      // Breite mindestens auf die breiteste Zeile in der neuen Schrift aufweiten
+      var minSize = minTextSize(el);
+      if (minSize) {
+        el.width = Math.max(el.width || 0, minSize.width);
+        el.height = Math.max(el.height || 0, minSize.height);
+      }
       draw();
     }
   };
@@ -1051,12 +1141,17 @@ window.initProfileInvoiceGenerator = function() {
     if (el) {
       pushUndoState();
       el.fontSize = size;
-      // Update height based on text content and new font size
+      // Update height based on text content and new font size;
+      // Breite mindestens auf die breiteste Zeile aufweiten
       if (el.type !== 'line' && el.type !== 'image') {
         var lines = (el.text || '').split('\n');
         var lineHeight = size * 1.2;
         var textHeight = lines.length * lineHeight;
         el.height = Math.max(textHeight + 6, 20); // Minimum height of 20
+        var minSize = minTextSize(el);
+        if (minSize) {
+          el.width = Math.max(el.width || 0, minSize.width);
+        }
       }
       draw();
     }
@@ -1192,6 +1287,7 @@ window.initProfileInvoiceGenerator = function() {
         heightPercent: toPercentY(el.height),
         fontSize: el.fontSize,
         fontStyle: el.fontStyle,
+        fontFamily: el.fontFamily,
         textAlign: el.textAlign,
         color: el.color,
         isStatic: el.isStatic,
@@ -1200,10 +1296,18 @@ window.initProfileInvoiceGenerator = function() {
         imageData: el.imageData
       };
     });
+    // Das Hintergrundbild wird bewusst NICHT mitgeschickt: Es wird serverseitig
+    // gehalten und dort ins Template-JSON übernommen — die große Bild-Payload
+    // würde sonst das Limit für Client-zu-Server-Aufrufe sprengen.
     return {
       elements: elementsWithPercent
     };
   };
+
+  window.updateProfileCanvasBackground = function(dataUrl) {
+    window.profileInvoiceState.backgroundImage = dataUrl || null;
+    draw();
+  };
   
   window.updateProfileVatRate = function(rate) {
     if (rate == null || isNaN(rate)) return;
@@ -1275,6 +1379,7 @@ window.initProfileInvoiceGenerator = function() {
     try {
       console.log('loadProfileTemplate called with data:', JSON.stringify(templateData).substring(0, 200));
       var data = (typeof templateData === 'string') ? JSON.parse(templateData) : templateData;
+      window.profileInvoiceState.backgroundImage = data.backgroundImage || null;
       if (data.elements && Array.isArray(data.elements)) {
         console.log('Loading ' + data.elements.length + ' elements');
         console.log('Current elements array before clear:', elements.length);
@@ -1386,7 +1491,11 @@ window.initProfileInvoiceGenerator = function() {
         
         // Save to global state
         saveState();
-        
+
+        // Autosave erst ab jetzt: der geladene Stand ist die neue Referenz
+        lastAutosaved = JSON.stringify(window.getProfileCanvasData());
+        autosaveEnabled = true;
+
         console.log('Calling draw(), elements count:', elements.length);
         console.log('Canvas dimensions:', canvas.width, 'x', canvas.height);
         draw();

src/main/java/de/assecutor/pdftool/address/Address.java

@@ -26,6 +26,11 @@ public class Address {
     private String email;
     private String phone;
 
+    // Bankverbindung (v. a. für Rechnungssteller relevant)
+    private String bankName;
+    private String iban;
+    private String bic;
+
     private LocalDateTime createdAt;
     private LocalDateTime updatedAt;
 
@@ -114,6 +119,30 @@ public class Address {
         this.phone = phone;
     }
 
+    public String getBankName() {
+        return bankName;
+    }
+
+    public void setBankName(String bankName) {
+        this.bankName = bankName;
+    }
+
+    public String getIban() {
+        return iban;
+    }
+
+    public void setIban(String iban) {
+        this.iban = iban;
+    }
+
+    public String getBic() {
+        return bic;
+    }
+
+    public void setBic(String bic) {
+        this.bic = bic;
+    }
+
     public LocalDateTime getCreatedAt() {
         return createdAt;
     }

src/main/java/de/assecutor/pdftool/invoice/IbanValidator.java

@@ -0,0 +1,29 @@
+package de.assecutor.pdftool.invoice;
+
+/**
+ * Prüft IBANs nach ISO 13616 (MOD 97-10).
+ */
+public final class IbanValidator {
+
+    private IbanValidator() {
+    }
+
+    public static boolean isValid(String value) {
+        String normalized = normalize(value);
+        if (!normalized.matches("[A-Z]{2}\\d{2}[A-Z0-9]{11,30}")) {
+            return false;
+        }
+        String rearranged = normalized.substring(4) + normalized.substring(0, 4);
+        int mod = 0;
+        for (char c : rearranged.toCharArray()) {
+            int digit = Character.isDigit(c) ? c - '0' : c - 'A' + 10;
+            mod = digit < 10 ? (mod * 10 + digit) % 97 : (mod * 100 + digit) % 97;
+        }
+        return mod == 1;
+    }
+
+    /** Entfernt Leerzeichen und wandelt in Großbuchstaben um. */
+    public static String normalize(String value) {
+        return value.replaceAll("\\s", "").toUpperCase();
+    }
+}

src/main/java/de/assecutor/pdftool/template/InvoiceTemplateService.java

@@ -31,6 +31,12 @@ public class InvoiceTemplateService {
     /** Name des Standard-Templates (Ziel der einmaligen Datei-Migration). */
     public static final String DEFAULT_TEMPLATE_NAME = "standard";
 
+    /**
+     * Reservierter Name für den automatisch gesicherten Arbeitsstand des
+     * Rechnungsgenerators; taucht in der Template-Auswahl nicht auf.
+     */
+    public static final String AUTOSAVE_NAME = "__autosave__";
+
     private static final String LEGACY_TEMPLATE_FILE_NAME = "rechnungstemplate.json";
 
     private final InvoiceTemplateRepository repository;
@@ -64,10 +70,28 @@ public class InvoiceTemplateService {
         migrateLegacyTemplateIfMissing();
         return repository.findAll().stream()
                 .map(template -> template.getName())
+                .filter(name -> !AUTOSAVE_NAME.equals(name))
                 .sorted(String.CASE_INSENSITIVE_ORDER)
                 .toList();
     }
 
+    /** Sichert den aktuellen Arbeitsstand des Rechnungsgenerators. */
+    public void saveAutosave(String templateData) {
+        saveTemplate(AUTOSAVE_NAME, templateData);
+    }
+
+    /** @return der zuletzt gesicherte Arbeitsstand oder leer, wenn keiner existiert. */
+    public Optional<String> loadAutosave() {
+        return repository.findByName(AUTOSAVE_NAME)
+                .map(template -> template.getTemplateData())
+                .filter(data -> !data.isBlank());
+    }
+
+    /** Verwirft den gesicherten Arbeitsstand, z. B. nach dem Speichern eines Templates. */
+    public void clearAutosave() {
+        repository.findByName(AUTOSAVE_NAME).ifPresent(repository::delete);
+    }
+
     /** @return das gespeicherte Template mit dem Namen oder leer, wenn keines existiert. */
     public Optional<String> loadTemplate(String name) {
         if (DEFAULT_TEMPLATE_NAME.equals(name)) {

src/main/java/de/assecutor/pdftool/template/TemplatePdfService.java

@@ -3,13 +3,17 @@ package de.assecutor.pdftool.template;
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.JsonNode;
 import com.fasterxml.jackson.databind.ObjectMapper;
+import com.itextpdf.html2pdf.ConverterProperties;
 import com.itextpdf.html2pdf.HtmlConverter;
+import com.itextpdf.html2pdf.resolver.font.DefaultFontProvider;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.stereotype.Service;
 
 import java.io.ByteArrayOutputStream;
 import java.math.BigDecimal;
+import java.nio.file.Files;
+import java.nio.file.Path;
 import java.math.RoundingMode;
 import java.util.ArrayList;
 import java.util.List;
@@ -48,6 +52,20 @@ public class TemplatePdfService {
         JsonNode rootNode = mapper.readTree(jsonTemplateData);
         JsonNode elements = rootNode.get("elements");
 
+        // Hintergrundbild: als body-Hintergrund auf Seitengröße skaliert; alle
+        // Elemente liegen darüber. (Ein <img> wird von html2pdf an dieser
+        // Stelle nicht unterstützt, background-image dagegen schon.)
+        String backgroundCss = "";
+        JsonNode background = rootNode.get("backgroundImage");
+        if (background != null && !background.isNull() && !background.asText().isEmpty()) {
+            String imageData = background.asText();
+            if (!imageData.startsWith("data:")) {
+                imageData = "data:image/png;base64," + imageData;
+            }
+            backgroundCss = " background-image: url('" + imageData.replace("'", "%27") + "');"
+                    + " background-size: 210mm 297mm; background-repeat: no-repeat;";
+        }
+
         StringBuilder htmlBuilder = new StringBuilder();
         htmlBuilder.append("<!DOCTYPE html>");
         htmlBuilder.append("<html><head>");
@@ -55,7 +73,8 @@ public class TemplatePdfService {
         htmlBuilder.append("<style>");
         htmlBuilder.append("@page { size: A4; margin: 0; }");
         htmlBuilder.append(
-                "body { margin: 0; padding: 0; width: 210mm; height: 297mm; position: relative; font-family: Arial, sans-serif; }");
+                "body { margin: 0; padding: 0; width: 210mm; height: 297mm; position: relative; font-family: Arial, sans-serif;"
+                        + backgroundCss + " }");
         htmlBuilder.append(".element { position: absolute; box-sizing: border-box; overflow: hidden; }");
         htmlBuilder.append(".text { white-space: nowrap; overflow: visible; }");
         htmlBuilder.append(".line { border-top: 1px solid #333; }");
@@ -72,8 +91,22 @@ public class TemplatePdfService {
 
         htmlBuilder.append("</body></html>");
 
+        // Standard-PDF-Fonts + mitgelieferte Noto-Fonts + Systemschriften, damit
+        // auch Schriften wie Verdana oder echtes Arial aufgelöst werden können.
+        // Der FontProvider darf nicht über Konvertierungen hinweg wiederverwendet
+        // werden, daher pro Aufruf eine neue Instanz.
+        ConverterProperties converterProperties = new ConverterProperties();
+        DefaultFontProvider fontProvider = new DefaultFontProvider(true, true, true);
+        // macOS legt viele Schriften (u. a. Verdana) unter "Supplemental" ab;
+        // dieses Verzeichnis gehört nicht zu den von iText gescannten Pfaden.
+        Path supplementalFonts = Path.of("/System/Library/Fonts/Supplemental");
+        if (Files.isDirectory(supplementalFonts)) {
+            fontProvider.addDirectory(supplementalFonts.toString());
+        }
+        converterProperties.setFontProvider(fontProvider);
+
         ByteArrayOutputStream out = new ByteArrayOutputStream();
-        HtmlConverter.convertToPdf(htmlBuilder.toString(), out);
+        HtmlConverter.convertToPdf(htmlBuilder.toString(), out, converterProperties);
         return out.toByteArray();
     }
 
@@ -103,6 +136,7 @@ public class TemplatePdfService {
         int fontSize = element.has("fontSize") ? element.get("fontSize").asInt(14) : 14;
         String color = element.has("color") ? element.get("color").asText("#333333") : "#333333";
         String textAlign = element.has("textAlign") ? element.get("textAlign").asText("left") : "left";
+        String fontFamily = element.has("fontFamily") ? element.get("fontFamily").asText("Arial") : "Arial";
 
         // Prozent -> mm (A4: 210mm x 297mm)
         double mmX = xPercent / 100.0 * 210.0;
@@ -126,6 +160,7 @@ public class TemplatePdfService {
             htmlBuilder.append("font-size:").append(fontSize).append("pt;");
             htmlBuilder.append("line-height:").append(String.format(Locale.US, "%.2f", fontSize * 1.2)).append("pt;");
             htmlBuilder.append("color:").append(color).append(";");
+            htmlBuilder.append("font-family:").append(cssFontStack(fontFamily)).append(";");
             // services.list als Block, damit die Tabelle die Breite füllen kann
             if ("services.list".equals(variable)) {
                 htmlBuilder.append("display:block;overflow:visible;padding:0;");
@@ -184,9 +219,9 @@ public class TemplatePdfService {
             }
         } else if ("services.list".equals(variable)) {
             if (variables.containsKey("services.json")) {
-                htmlBuilder.append(generateServicesTableHtmlWithData(variables));
+                htmlBuilder.append(generateServicesTableHtmlWithData(variables, fontSize, mmHeight));
             } else {
-                htmlBuilder.append(generateServicesTableHtml(effectiveVatRate));
+                htmlBuilder.append(generateServicesTableHtml(effectiveVatRate, fontSize, mmHeight));
             }
         } else if (text.contains("<br>")) {
             // Mehrzeiliger Text: ohne nowrap rendern, damit <br> wirkt
@@ -199,7 +234,7 @@ public class TemplatePdfService {
     }
 
     /** Positionstabelle mit Beispieldaten, wenn keine echten Positionen übergeben wurden. */
-    private String generateServicesTableHtml(BigDecimal vatRate) {
+    private String generateServicesTableHtml(BigDecimal vatRate, int fontSize, double mmHeight) {
         BigDecimal pct = vatRate.multiply(new BigDecimal("100")).setScale(2, RoundingMode.HALF_UP)
                 .stripTrailingZeros();
         if (pct.scale() < 0) {
@@ -207,47 +242,23 @@ public class TemplatePdfService {
         }
         String vatLabel = pct.toPlainString().replace('.', ',') + "%";
 
-        String[][] sampleData = { { "Beratungsleistung", vatLabel, "450,00 €" },
+        List<Map<String, String>> rows = List.of(
-                { "Softwareentwicklung", vatLabel, "1.200,00 €" }, { "Support-Pauschale", vatLabel, "150,00 €" } };
+                Map.of("quantity", "1", "name", "Beratungsleistung", "unitPrice", "450,00", "netAmount", "450,00"),
+                Map.of("quantity", "1", "name", "Softwareentwicklung", "unitPrice", "1.200,00", "netAmount",
+                        "1.200,00"),
+                Map.of("quantity", "1", "name", "Support-Pauschale", "unitPrice", "150,00", "netAmount", "150,00"));
 
         double netTotal = 1800.00;
-        double grossTotal = netTotal + (netTotal * vatRate.doubleValue());
+        double vatTotal = netTotal * vatRate.doubleValue();
-
+        return renderServicesTable(rows,
-        StringBuilder html = new StringBuilder();
+                String.format(Locale.GERMANY, "%,.2f €", netTotal),
-        html.append("<div style='width:100%;box-sizing:border-box;'>");
+                String.format(Locale.GERMANY, "%,.2f €", vatTotal),
-        html.append("<table style='width:100%;border-collapse:collapse;font-size:inherit;table-layout:fixed;'>");
+                String.format(Locale.GERMANY, "%,.2f €", netTotal + vatTotal),
-        html.append(tableHeaderRow());
+                vatLabel, fontSize, mmHeight);
-        for (int i = 0; i < sampleData.length; i++) {
-            String bgColor = (i % 2 == 1) ? "background-color:rgba(0,0,0,0.02);" : "";
-            html.append("<tr style='").append(bgColor).append("border-bottom:1px solid #eeeeee;'>");
-            html.append(
-                    "<td style='text-align:left;padding:4px 8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;'>")
-                    .append(sampleData[i][0]).append("</td>");
-            html.append("<td style='text-align:right;padding:4px 8px;white-space:nowrap;'>").append(sampleData[i][1])
-                    .append("</td>");
-            html.append("<td style='text-align:right;padding:4px 8px;white-space:nowrap;'>").append(sampleData[i][2])
-                    .append("</td>");
-            html.append("</tr>");
-        }
-        html.append("</table>");
-
-        html.append("<div style='margin-top:8px;width:100%;'>");
-        html.append("<table style='width:100%;border-collapse:collapse;font-size:inherit;table-layout:fixed;'>");
-        html.append(summaryRow("Nettosumme:", String.format(Locale.GERMANY, "%,.2f €", netTotal), false));
-        html.append(summaryRow("Gesamtsumme:", String.format(Locale.GERMANY, "%,.2f €", grossTotal), true));
-        html.append("</table>");
-        html.append("</div>");
-        html.append("</div>");
-        return html.toString();
     }
 
     /** Positionstabelle aus echten Daten (services.json + invoice.*-Summen). */
-    private String generateServicesTableHtmlWithData(Map<String, String> variables) {
+    private String generateServicesTableHtmlWithData(Map<String, String> variables, int fontSize, double mmHeight) {
-        String netTotal = variables.getOrDefault("invoice.net_total", "0,00 €");
-        String vatTotal = variables.getOrDefault("invoice.vat_total", "0,00 €");
-        String grossTotal = variables.getOrDefault("invoice.gross_total", "0,00 €");
-        String vatRateLabel = variables.getOrDefault("invoice.vat_rate", "19%");
-
         List<Map<String, String>> servicesData = new ArrayList<>();
         String servicesJson = variables.get("services.json");
         if (servicesJson != null && !servicesJson.isEmpty() && !servicesJson.equals("[]")) {
@@ -258,72 +269,120 @@ public class TemplatePdfService {
                 log.warn("Positionsdaten (services.json) konnten nicht gelesen werden: {}", e.getMessage());
             }
         }
+        return renderServicesTable(servicesData,
+                variables.getOrDefault("invoice.net_total", "0,00 €"),
+                variables.getOrDefault("invoice.vat_total", "0,00 €"),
+                variables.getOrDefault("invoice.gross_total", "0,00 €"),
+                variables.getOrDefault("invoice.vat_rate", "19%"),
+                fontSize, mmHeight);
+    }
+
+    /**
+     * Rendert die Positionstabelle im Briefbogen-Layout: Spalten Menge,
+     * Bezeichnung, Einzelpreis und Gesamt, durchgezogene Spaltenlinien bis zum
+     * Summenblock und die Summen (Nettobetrag, MwSt., Endbetrag) rechts unten.
+     */
+    private String renderServicesTable(List<Map<String, String>> rows, String netTotal, String vatTotal,
+            String grossTotal, String vatRateLabel, int fontSize, double mmHeight) {
+        String border = "0.5px solid #000000";
+
+        // Höhe der Füllzeile: Spaltenlinien bis zum Summenblock durchziehen,
+        // damit die Tabelle die Bausteinhöhe füllt (pt -> mm: Faktor 0,3528)
+        double lineMm = fontSize * 1.2 * 0.3528;
+        double headerMm = fontSize * 0.9 * 0.3528 + 1.6;
+        double rowMm = lineMm + 1.6;
+        double summaryMm = 3 * (lineMm + 1.2) + 2.0;
+        double fillerMm = Math.max(0, mmHeight - headerMm - rows.size() * rowMm - summaryMm);
 
         StringBuilder html = new StringBuilder();
         html.append("<div style='width:100%;box-sizing:border-box;'>");
         html.append("<table style='width:100%;border-collapse:collapse;font-size:inherit;table-layout:fixed;'>");
-        html.append(tableHeaderRow());
+        html.append("<colgroup><col style='width:9%;'/><col style='width:61%;'/>")
+                .append("<col style='width:15%;'/><col style='width:15%;'/></colgroup>");
 
-        if (servicesData.isEmpty()) {
+        String headStyle = "background-color:#eeeeee;font-size:0.75em;font-weight:normal;color:#333333;"
-            html.append("<tr style='border-bottom:1px solid #eeeeee;'>");
+                + "text-align:left;padding:2px 6px;white-space:nowrap;";
-            html.append(
+        html.append("<tr>");
-                    "<td colspan='3' style='text-align:center;padding:4px 8px;white-space:nowrap;'>Keine Positionen vorhanden</td>");
+        html.append("<th style='").append(headStyle).append("'>Menge</th>");
-            html.append("</tr>");
+        html.append("<th style='").append(headStyle).append("border-left:").append(border)
-        } else {
+                .append(";'>Bezeichnung</th>");
-            for (int i = 0; i < servicesData.size(); i++) {
+        html.append("<th style='").append(headStyle).append("border-left:").append(border)
-                Map<String, String> service = servicesData.get(i);
+                .append(";'>Einzelpreis</th>");
-                String name = service.getOrDefault("name", "Unbekannte Position");
+        html.append("<th style='").append(headStyle).append("border-left:").append(border).append(";'>Gesamt</th>");
-                String netAmount = service.getOrDefault("netAmount", "0,00");
+        html.append("</tr>");
-                // USt-Satz pro Position, Fallback: einheitlicher Satz der Rechnung
-                String rowVat = service.getOrDefault("vat", vatRateLabel);
 
-                String bgColor = (i % 2 == 1) ? "background-color:rgba(0,0,0,0.02);" : "";
+        if (rows.isEmpty()) {
-                html.append("<tr style='").append(bgColor).append("border-bottom:1px solid #eeeeee;'>");
+            html.append("<tr><td style='text-align:center;padding:2px 6px;'></td>")
-                html.append(
+                    .append("<td style='padding:2px 6px;border-left:").append(border)
-                        "<td style='text-align:left;padding:4px 8px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;width:55%;'>")
+                    .append(";'>Keine Positionen vorhanden</td>")
-                        .append(escapeHtml(name)).append("</td>");
+                    .append("<td style='border-left:").append(border).append(";'></td>")
-                html.append("<td style='text-align:right;padding:4px 8px;white-space:nowrap;width:20%;'>")
+                    .append("<td style='border-left:").append(border).append(";'></td></tr>");
-                        .append(escapeHtml(rowVat)).append("</td>");
-                // € nur an rein numerische Beträge anhängen; Werte wie "15 %" unverändert
-                String amountDisplay = netAmount.matches("[0-9.,]+") ? netAmount + " €" : escapeHtml(netAmount);
-                html.append("<td style='text-align:right;padding:4px 8px;white-space:nowrap;width:25%;'>")
-                        .append(amountDisplay).append("</td>");
-                html.append("</tr>");
-            }
         }
+        for (Map<String, String> row : rows) {
+            html.append("<tr>");
+            html.append("<td style='text-align:center;padding:2px 6px;white-space:nowrap;'>")
+                    .append(escapeHtml(row.getOrDefault("quantity", ""))).append("</td>");
+            html.append("<td style='text-align:left;padding:2px 6px;white-space:nowrap;overflow:hidden;")
+                    .append("text-overflow:ellipsis;border-left:").append(border).append(";'>")
+                    .append(escapeHtml(row.getOrDefault("name", ""))).append("</td>");
+            html.append("<td style='text-align:right;padding:2px 6px;white-space:nowrap;border-left:").append(border)
+                    .append(";'>").append(amountDisplay(row.getOrDefault("unitPrice", ""))).append("</td>");
+            html.append("<td style='text-align:right;padding:2px 6px;white-space:nowrap;border-left:").append(border)
+                    .append(";'>").append(amountDisplay(row.getOrDefault("netAmount", ""))).append("</td>");
+            html.append("</tr>");
+        }
+
+        // Füllzeile: hält die Spaltenlinien bis zum Summenblock durch
+        html.append("<tr>");
+        html.append("<td style='height:").append(String.format(Locale.US, "%.2f", fillerMm)).append("mm;'></td>");
+        html.append("<td style='border-left:").append(border).append(";'></td>");
+        html.append("<td style='border-left:").append(border).append(";'></td>");
+        html.append("<td style='border-left:").append(border).append(";'></td>");
+        html.append("</tr>");
         html.append("</table>");
 
-        html.append("<div style='margin-top:8px;width:100%;'>");
+        // Summenblock rechts unten: Nettobetrag, MwSt., Endbetrag
+        String vatLabelText = vatRateLabel == null || vatRateLabel.isEmpty()
+                ? "+ MwSt."
+                : "+ " + escapeHtml(vatRateLabel) + " MwSt.";
         html.append("<table style='width:100%;border-collapse:collapse;font-size:inherit;table-layout:fixed;'>");
-        // Bei gemischten USt-Sätzen (leeres Label) ohne Satzangabe beschriften
+        html.append("<colgroup><col style='width:70%;'/><col style='width:15%;'/><col style='width:15%;'/>")
-        String vatSummaryLabel = vatRateLabel.isEmpty() ? "zzgl. USt:"
+                .append("</colgroup>");
-                : "zzgl. " + escapeHtml(vatRateLabel) + " USt:";
+        html.append(summaryRow("Nettobetrag", escapeHtml(netTotal), true, border));
-        html.append(summaryRow("Nettosumme:", netTotal, false));
+        html.append(summaryRow(vatLabelText, escapeHtml(vatTotal), false, border));
-        html.append(summaryRow(vatSummaryLabel, vatTotal, false));
+        html.append(summaryRow("Endbetrag", escapeHtml(grossTotal), true, border));
-        html.append(summaryRow("Gesamtsumme:", grossTotal, true));
         html.append("</table>");
         html.append("</div>");
-        html.append("</div>");
         return html.toString();
     }
 
-    private String tableHeaderRow() {
+    /** Eine Zeile des Summenblocks; jede zweite Zeile ist grau hinterlegt. */
-        return "<tr style='background-color:#f5f5f5;border-bottom:1px solid #cccccc;'>"
+    private String summaryRow(String label, String value, boolean shaded, String border) {
-                + "<th style='text-align:left;padding:4px 8px;font-weight:bold;width:55%;white-space:nowrap;'>Name</th>"
+        String bg = shaded ? "background-color:#eeeeee;" : "";
-                + "<th style='text-align:right;padding:4px 8px;font-weight:bold;width:20%;white-space:nowrap;'>Steuersatz</th>"
+        return "<tr>"
-                + "<th style='text-align:right;padding:4px 8px;font-weight:bold;width:25%;white-space:nowrap;'>Nettobetrag</th>"
+                + "<td></td>"
+                + "<td style='" + bg + "padding:2px 6px;white-space:nowrap;border-left:" + border + ";'>"
+                + label + "</td>"
+                + "<td style='" + bg + "padding:2px 6px;text-align:right;white-space:nowrap;'>" + value + "</td>"
                 + "</tr>";
     }
 
-    private String summaryRow(String label, String value, boolean emphasized) {
+    /** € nur an rein numerische Beträge anhängen; andere Werte escaped übernehmen. */
-        String labelStyle = emphasized ? "padding:4px 8px;font-weight:bold;font-size:1.05em;" : "padding:2px 8px;";
+    private String amountDisplay(String amount) {
-        String valueStyle = emphasized ? "padding:4px 8px;font-weight:bold;font-size:1.05em;"
+        return amount.matches("[0-9.,]+") ? amount + " €" : escapeHtml(amount);
-                : "padding:2px 8px;font-weight:bold;";
+    }
-        return "<tr>"
+
-                + "<td style='width:55%;padding:2px 0;'></td>"
+    /**
-                + "<td style='width:20%;text-align:left;white-space:nowrap;" + labelStyle + "'>" + label + "</td>"
+     * CSS-Schriftstapel zur Schriftart des Elements; nur bekannte Werte werden
-                + "<td style='width:25%;text-align:right;white-space:nowrap;" + valueStyle + "'>" + value + "</td>"
+     * übernommen (Whitelist), alles andere fällt auf Arial zurück.
-                + "</tr>";
+     */
+    private static String cssFontStack(String fontFamily) {
+        return switch (fontFamily) {
+        case "Times New Roman" -> "'Times New Roman', Times, serif";
+        case "Courier New" -> "'Courier New', Courier, monospace";
+        case "Verdana" -> "Verdana, 'DejaVu Sans', Arial, sans-serif";
+        default -> "Arial, Helvetica, sans-serif";
+        };
     }
 
     private String escapeHtml(String input) {

src/main/java/de/assecutor/pdftool/template/TemplateVariables.java

@@ -38,6 +38,8 @@ public final class TemplateVariables {
             BigDecimal net = lineNet(item);
             Map<String, String> position = new HashMap<>();
             position.put("name", item.description());
+            position.put("quantity", quantityLabel(item.quantity()));
+            position.put("unitPrice", formatAmount(item.unitPriceNet()));
             position.put("netAmount", formatAmount(net));
             position.put("vat", vatLabel(item.vatPercent()));
             positions.add(position);
@@ -71,6 +73,8 @@ public final class TemplateVariables {
             BigDecimal net = lineNet(item);
             Map<String, String> row = new HashMap<>();
             row.put("name", item.description());
+            row.put("quantity", quantityLabel(item.quantity()));
+            row.put("unitPrice", formatAmount(item.unitPriceNet()) + " €");
             row.put("vat", vatLabel(item.vatPercent()));
             row.put("net", formatAmount(net) + " €");
             rows.add(row);
@@ -97,6 +101,15 @@ public final class TemplateVariables {
         return amount.setScale(2, RoundingMode.HALF_UP).toString().replace(".", ",");
     }
 
+    /** Menge als Anzeige-Label ohne überflüssige Nullen, z. B. "1" oder "2,5". */
+    public static String quantityLabel(BigDecimal quantity) {
+        BigDecimal normalized = quantity.stripTrailingZeros();
+        if (normalized.scale() < 0) {
+            normalized = normalized.setScale(0);
+        }
+        return normalized.toPlainString().replace('.', ',');
+    }
+
     /** USt-Satz als Anzeige-Label, z. B. "19%" oder "7,5%". */
     public static String vatLabel(BigDecimal percent) {
         BigDecimal normalized = percent.stripTrailingZeros();

src/main/java/de/assecutor/pdftool/ui/AddressBookView.java

@@ -20,6 +20,7 @@ import com.vaadin.flow.router.Route;
 import de.assecutor.pdftool.address.Address;
 import de.assecutor.pdftool.address.AddressRepository;
 import de.assecutor.pdftool.address.AddressType;
+import de.assecutor.pdftool.invoice.IbanValidator;
 import de.assecutor.pdftool.invoice.VatIdValidator;
 import org.springframework.data.domain.Sort;
 
@@ -122,7 +123,7 @@ public class AddressBookView extends VerticalLayout {
         Address target = address == null ? new Address() : address;
 
         Dialog dialog = new Dialog();
-        dialog.setHeaderTitle(isNew ? "Neue Adresse" : "Adresse bearbeiten");
+        dialog.setHeaderTitle(isNew ? "Neues Unternehmen" : "Unternehmen bearbeiten");
 
         ComboBox<AddressType> type = new ComboBox<>("Typ");
         type.setItems(AddressType.values());
@@ -154,7 +155,17 @@ public class AddressBookView extends VerticalLayout {
         TextField phone = new TextField("Telefon");
         phone.setValue(target.getPhone() != null ? target.getPhone() : "");
 
-        FormLayout form = new FormLayout(type, name, street, zip, city, countryCode, vatId, email, phone);
+        // Bankverbindung (optional)
+        TextField bankName = new TextField("Bank");
+        bankName.setValue(target.getBankName() != null ? target.getBankName() : "");
+        TextField iban = new TextField("IBAN");
+        iban.setValue(target.getIban() != null ? target.getIban() : "");
+        iban.setHelperText("z. B. DE02 1203 0000 0000 2020 51");
+        TextField bic = new TextField("BIC");
+        bic.setValue(target.getBic() != null ? target.getBic() : "");
+
+        FormLayout form = new FormLayout(type, name, street, zip, city, countryCode, vatId, email, phone,
+                bankName, iban, bic);
         form.setResponsiveSteps(new FormLayout.ResponsiveStep("0", 1), new FormLayout.ResponsiveStep("500px", 2));
         form.setWidth("560px");
         dialog.add(form);
@@ -189,6 +200,17 @@ public class AddressBookView extends VerticalLayout {
                 email.setInvalid(true);
                 errors.add("E-Mail-Adresse ist ungültig.");
             }
+            if (!iban.getValue().isBlank() && !IbanValidator.isValid(iban.getValue())) {
+                iban.setErrorMessage("IBAN ist ungültig (Prüfsumme).");
+                iban.setInvalid(true);
+                errors.add("IBAN ist ungültig (Prüfsumme).");
+            }
+            if (!bic.getValue().isBlank()
+                    && !bic.getValue().trim().matches("[A-Za-z]{6}[A-Za-z0-9]{2}([A-Za-z0-9]{3})?")) {
+                bic.setErrorMessage("BIC ist ungültig (8 oder 11 Stellen).");
+                bic.setInvalid(true);
+                errors.add("BIC ist ungültig (8 oder 11 Stellen).");
+            }
             if (!errors.isEmpty()) {
                 Notification.show(String.join("\n", errors), 5000, Notification.Position.MIDDLE)
                         .addThemeVariants(NotificationVariant.LUMO_ERROR);
@@ -204,6 +226,9 @@ public class AddressBookView extends VerticalLayout {
             target.setVatId(vatId.getValue().isBlank() ? "" : VatIdValidator.normalize(vatId.getValue()));
             target.setEmail(email.getValue().trim());
             target.setPhone(phone.getValue().trim());
+            target.setBankName(bankName.getValue().trim());
+            target.setIban(iban.getValue().isBlank() ? "" : IbanValidator.normalize(iban.getValue()));
+            target.setBic(bic.getValue().trim().toUpperCase());
             target.touch();
             repository.save(target);
 

src/main/java/de/assecutor/pdftool/ui/MainView.java

@@ -27,12 +27,11 @@ import com.vaadin.flow.component.upload.receivers.MemoryBuffer;
 import com.vaadin.flow.router.PageTitle;
 import com.vaadin.flow.router.Route;
 import com.vaadin.flow.server.StreamResource;
-import org.springframework.core.env.Environment;
-import org.springframework.core.env.Profiles;
 import de.assecutor.pdftool.address.Address;
 import de.assecutor.pdftool.address.AddressRepository;
 import de.assecutor.pdftool.address.AddressType;
 import de.assecutor.pdftool.invoice.CapturedInvoiceData;
+import de.assecutor.pdftool.invoice.IbanValidator;
 import de.assecutor.pdftool.invoice.InvoiceDraft;
 import de.assecutor.pdftool.invoice.InvoiceDraftService;
 import de.assecutor.pdftool.invoice.InvoiceMetadata;
@@ -107,9 +106,6 @@ public class MainView extends VerticalLayout {
     private final DatePicker dueDate = new DatePicker("Fälligkeitsdatum");
     private final TextField currency = new TextField("Währung");
     private final TextField paymentTerms = new TextField("Zahlungsbedingungen");
-    private final TextField buyerReference = new TextField("Käuferreferenz / Leitweg-ID");
-    private final TextField iban = new TextField("IBAN (Rechnungssteller)");
-    private final TextField bic = new TextField("BIC");
 
     private final PartyForm sender = new PartyForm(true);
     private final PartyForm recipient = new PartyForm(false);
@@ -128,8 +124,7 @@ public class MainView extends VerticalLayout {
 
     public MainView(ZugferdService zugferdService, CapturedInvoiceData capturedInvoiceData,
             InvoiceTemplateService invoiceTemplateService, TemplatePdfService templatePdfService,
-            AddressRepository addressRepository, InvoiceDraftService invoiceDraftService,
+            AddressRepository addressRepository, InvoiceDraftService invoiceDraftService) {
-            Environment environment) {
         this.zugferdService = zugferdService;
         this.capturedInvoiceData = capturedInvoiceData;
         this.invoiceTemplateService = invoiceTemplateService;
@@ -209,10 +204,8 @@ public class MainView extends VerticalLayout {
         currency.setPattern("[A-Za-z]{3}");
         currency.setErrorMessage("Währung als dreistelliger ISO-Code, z. B. EUR.");
         currency.setValue("EUR");
-        buyerReference.setHelperText("BT-10 — für Rechnungen an Behörden erforderlich");
-        iban.setHelperText("Für die Zahlungsangaben (BG-16) empfohlen");
         FormLayout invoiceForm = new FormLayout(invoiceNumber, issueDate, deliveryDate, dueDate, currency,
-                paymentTerms, buyerReference, iban, bic);
+                paymentTerms);
         invoiceForm.setResponsiveSteps(new FormLayout.ResponsiveStep("0", 1), new FormLayout.ResponsiveStep("600px", 3));
         add(new H3("2. Rechnungsdaten"), invoiceForm);
 
@@ -240,10 +233,6 @@ public class MainView extends VerticalLayout {
 
         registerDraftDirtyTracking();
         updateSaveDraftEnabled();
-
-        if (environment.acceptsProfiles(Profiles.of("dev"))) {
-            prefillDevData();
-        }
     }
 
     @Override
@@ -325,9 +314,9 @@ public class MainView extends VerticalLayout {
                 issueDate.getValue(), deliveryDate.getValue(), dueDate.getValue(),
                 currency.getValue().trim(),
                 paymentTerms.getValue(),
-                buyerReference.getValue().trim(),
+                "",
-                iban.getValue().trim(),
+                sender.ibanNormalized(),
-                bic.getValue().trim(),
+                sender.bicNormalized(),
                 sender.toParty(), recipient.toParty(),
                 List.copyOf(lineItems),
                 LocalDateTime.now());
@@ -358,10 +347,8 @@ public class MainView extends VerticalLayout {
         dueDate.setValue(draft.dueDate());
         currency.setValue(nullToEmpty(draft.currency()));
         paymentTerms.setValue(nullToEmpty(draft.paymentTerms()));
-        buyerReference.setValue(nullToEmpty(draft.buyerReference()));
-        iban.setValue(nullToEmpty(draft.iban()));
-        bic.setValue(nullToEmpty(draft.bic()));
         applyParty(sender, draft.sender());
+        sender.prefillBank(nullToEmpty(draft.iban()), nullToEmpty(draft.bic()));
         applyParty(recipient, draft.recipient());
         lineItems.clear();
         if (draft.items() != null) {
@@ -382,7 +369,7 @@ public class MainView extends VerticalLayout {
         form.prefill(nullToEmpty(party.name()), nullToEmpty(party.street()),
                 nullToEmpty(party.zip()), nullToEmpty(party.city()),
                 nullToEmpty(party.countryCode()), nullToEmpty(party.vatId()),
-                nullToEmpty(party.email()), nullToEmpty(party.phone()));
+                nullToEmpty(party.email()));
     }
 
     /** Konfiguriert eine Adressbuch-Auswahl, die bei Auswahl das zugehörige Adressformular vorbelegt. */
@@ -397,7 +384,8 @@ public class MainView extends VerticalLayout {
                 form.prefill(nullToEmpty(address.getName()), nullToEmpty(address.getStreet()),
                         nullToEmpty(address.getZip()), nullToEmpty(address.getCity()),
                         nullToEmpty(address.getCountryCode()), nullToEmpty(address.getVatId()),
-                        nullToEmpty(address.getEmail()), nullToEmpty(address.getPhone()));
+                        nullToEmpty(address.getEmail()));
+                form.prefillBank(nullToEmpty(address.getIban()), nullToEmpty(address.getBic()));
             }
         });
     }
@@ -415,22 +403,6 @@ public class MainView extends VerticalLayout {
         return List.copyOf(lineItems);
     }
 
-    /** Belegt das Formular im dev-Profil mit Testdaten vor, um manuelles Tippen zu sparen. */
-    private void prefillDevData() {
-        invoiceNumber.setValue("11111");
-        deliveryDate.setValue(LocalDate.now());
-        dueDate.setValue(LocalDate.now().plusDays(14));
-        paymentTerms.setValue("14 Tage");
-        buyerReference.setValue("11111");
-        iban.setValue("DE64 6001 0070 0379 0907 00");
-        bic.setValue("PBNKDEFFXXX");
-        // Rechnungssteller und -empfänger bleiben leer und werden über die
-        // Adressbuch-Auswahl befüllt.
-        lineItems.add(new InvoiceMetadata.LineItem("sdf", BigDecimal.ONE, new BigDecimal("100"),
-                new BigDecimal("19")));
-        refreshItemsGrid();
-    }
-
     /** Tabelle der Rechnungspositionen mit Bearbeiten-/Löschen-Icons pro Zeile. */
     private void configureItemsGrid() {
         itemsGrid.addColumn(item -> item.description()).setHeader("Beschreibung").setFlexGrow(1);
@@ -471,20 +443,28 @@ public class MainView extends VerticalLayout {
         dueDate.addValueChangeListener(event -> updateSaveDraftEnabled());
         currency.addValueChangeListener(event -> updateSaveDraftEnabled());
         paymentTerms.addValueChangeListener(event -> updateSaveDraftEnabled());
-        buyerReference.addValueChangeListener(event -> updateSaveDraftEnabled());
-        iban.addValueChangeListener(event -> updateSaveDraftEnabled());
-        bic.addValueChangeListener(event -> updateSaveDraftEnabled());
         templateSelect.addValueChangeListener(event -> updateSaveDraftEnabled());
         sender.onAnyChange(this::updateSaveDraftEnabled);
         recipient.onAnyChange(this::updateSaveDraftEnabled);
     }
 
     /**
-     * Der Speichern-Button ist nur aktiv, wenn keine Vorbelegung geladen wurde
+     * Der Speichern-Button ist nur aktiv, wenn alle Pflichtfelder gefüllt sind
-     * oder sich die Eingaben seit dem Laden bzw. Speichern geändert haben.
+     * und keine Vorbelegung geladen wurde oder sich die Eingaben seit dem Laden
+     * bzw. Speichern geändert haben.
      */
     private void updateSaveDraftEnabled() {
-        saveDraftButton.setEnabled(loadedDraftState == null || !comparableState().equals(loadedDraftState));
+        boolean changed = loadedDraftState == null || !comparableState().equals(loadedDraftState);
+        saveDraftButton.setEnabled(changed && requiredFieldsFilled());
+    }
+
+    /** @return true, wenn alle Pflichtfelder der Maske gefüllt sind. */
+    private boolean requiredFieldsFilled() {
+        return !invoiceNumber.getValue().isBlank()
+                && issueDate.getValue() != null
+                && !currency.getValue().isBlank()
+                && sender.requiredFieldsFilled()
+                && recipient.requiredFieldsFilled();
     }
 
     /** Der aktuelle Formularstand ohne Name und Zeitstempel, zum Vergleich mit der geladenen Vorbelegung. */
@@ -495,9 +475,9 @@ public class MainView extends VerticalLayout {
                 issueDate.getValue(), deliveryDate.getValue(), dueDate.getValue(),
                 currency.getValue().trim(),
                 paymentTerms.getValue(),
-                buyerReference.getValue().trim(),
+                "",
-                iban.getValue().trim(),
+                sender.ibanNormalized(),
-                bic.getValue().trim(),
+                sender.bicNormalized(),
                 sender.toParty(), recipient.toParty(),
                 List.copyOf(lineItems),
                 null);
@@ -694,16 +674,6 @@ public class MainView extends VerticalLayout {
                 && !currency.getValue().trim().matches("[A-Za-z]{3}")) {
             markInvalid(currency, "Währung als dreistelliger ISO-Code, z. B. EUR.", errors);
         }
-        if (!iban.isEmpty() && !isValidIban(iban.getValue())) {
-            markInvalid(iban, "IBAN ist ungültig (Prüfsumme).", errors);
-        } else {
-            iban.setInvalid(false);
-        }
-        if (!bic.isEmpty() && !bic.getValue().trim().matches("[A-Za-z]{6}[A-Za-z0-9]{2}([A-Za-z0-9]{3})?")) {
-            markInvalid(bic, "BIC muss 8 oder 11 Stellen haben, z. B. NOLADE21RZB.", errors);
-        } else {
-            bic.setInvalid(false);
-        }
         errors.addAll(sender.validateFields("Rechnungssteller"));
         errors.addAll(recipient.validateFields("Rechnungsempfänger"));
         if (lineItems.isEmpty()) {
@@ -720,9 +690,9 @@ public class MainView extends VerticalLayout {
                 dueDate.getValue(),
                 currency.getValue().trim().toUpperCase(),
                 paymentTerms.getValue(),
-                buyerReference.getValue().trim(),
+                "",
-                iban.getValue().replaceAll("\\s", "").toUpperCase(),
+                sender.ibanNormalized(),
-                bic.getValue().trim().toUpperCase(),
+                sender.bicNormalized(),
                 sender.toParty(),
                 recipient.toParty(),
                 lineItems
@@ -760,21 +730,6 @@ public class MainView extends VerticalLayout {
         errors.add(message);
     }
 
-    /** IBAN-Prüfung nach ISO 13616 (MOD 97-10). */
-    private static boolean isValidIban(String value) {
-        String normalized = value.replaceAll("\\s", "").toUpperCase();
-        if (!normalized.matches("[A-Z]{2}\\d{2}[A-Z0-9]{11,30}")) {
-            return false;
-        }
-        String rearranged = normalized.substring(4) + normalized.substring(0, 4);
-        int mod = 0;
-        for (char c : rearranged.toCharArray()) {
-            int digit = Character.isDigit(c) ? c - '0' : c - 'A' + 10;
-            mod = digit < 10 ? (mod * 10 + digit) % 97 : (mod * 100 + digit) % 97;
-        }
-        return mod == 1;
-    }
-
     private void showErrors(List<String> messages) {
         Notification notification = new Notification();
         notification.addThemeVariants(NotificationVariant.LUMO_ERROR);
@@ -802,7 +757,10 @@ public class MainView extends VerticalLayout {
         private final TextField countryCode = new TextField("Land (ISO-Code, z.B. DE)");
         private final TextField vatId = new TextField("USt-IdNr.");
         private final EmailField email = new EmailField("E-Mail");
-        private final TextField phone = new TextField("Telefon");
+
+        // Bankverbindung; nur beim Rechnungssteller sichtbar und Pflicht
+        private final TextField iban = new TextField("IBAN");
+        private final TextField bic = new TextField("BIC");
 
         PartyForm(boolean vatRequired) {
             this.vatRequired = vatRequired;
@@ -824,15 +782,35 @@ public class MainView extends VerticalLayout {
             email.setErrorMessage("Gültige E-Mail-Adresse angeben.");
             // E-Mail direkt beim Verlassen des Feldes prüfen
             email.addValueChangeListener(event -> checkEmail());
+            add(name, street, zip, city, countryCode, vatId, email);
             if (vatRequired) {
-                phone.setHelperText("Für den Verkäufer-Kontakt (BR-DE-6) empfohlen");
+                iban.setRequired(true);
+                iban.setHelperText("Für die Zahlungsangaben (BG-16)");
+                bic.setRequired(true);
+                bic.setHelperText("8 oder 11 Stellen, z. B. NOLADE21RZB");
+                add(iban, bic);
             }
-            add(name, street, zip, city, countryCode, vatId, email, phone);
             setResponsiveSteps(new ResponsiveStep("0", 1), new ResponsiveStep("600px", 3));
         }
 
+        /** Belegt die Bankverbindung vor, z. B. aus dem Adressbuch. */
+        void prefillBank(String ibanValue, String bicValue) {
+            iban.setValue(ibanValue);
+            bic.setValue(bicValue);
+        }
+
+        /** IBAN ohne Leerzeichen in Großschreibung. */
+        String ibanNormalized() {
+            return iban.getValue().replaceAll("\\s", "").toUpperCase();
+        }
+
+        /** BIC ohne führende/abschließende Leerzeichen in Großschreibung. */
+        String bicNormalized() {
+            return bic.getValue().trim().toUpperCase();
+        }
+
         void prefill(String nameValue, String streetValue, String zipValue, String cityValue,
-                     String countryValue, String vatIdValue, String emailValue, String phoneValue) {
+                     String countryValue, String vatIdValue, String emailValue) {
             name.setValue(nameValue);
             street.setValue(streetValue);
             zip.setValue(zipValue);
@@ -840,7 +818,18 @@ public class MainView extends VerticalLayout {
             countryCode.setValue(countryValue);
             vatId.setValue(vatIdValue);
             email.setValue(emailValue);
-            phone.setValue(phoneValue);
+        }
+
+        /** @return true, wenn alle Pflichtfelder des Adressformulars gefüllt sind. */
+        boolean requiredFieldsFilled() {
+            return !name.getValue().isBlank()
+                    && !street.getValue().isBlank()
+                    && !zip.getValue().isBlank()
+                    && !city.getValue().isBlank()
+                    && !countryCode.getValue().isBlank()
+                    && (!vatRequired || !vatId.getValue().isBlank())
+                    && !email.getValue().isBlank()
+                    && (!vatRequired || (!iban.getValue().isBlank() && !bic.getValue().isBlank()));
         }
 
         /** Meldet jede Wertänderung eines Feldes, z. B. für die Dirty-Erkennung. */
@@ -852,12 +841,14 @@ public class MainView extends VerticalLayout {
             countryCode.addValueChangeListener(event -> listener.run());
             vatId.addValueChangeListener(event -> listener.run());
             email.addValueChangeListener(event -> listener.run());
-            phone.addValueChangeListener(event -> listener.run());
+            iban.addValueChangeListener(event -> listener.run());
+            bic.addValueChangeListener(event -> listener.run());
         }
 
         /** Leert alle Felder; das Land behält den Standardwert "DE". */
         void clearFields() {
-            prefill("", "", "", "", "DE", "", "", "");
+            prefill("", "", "", "", "DE", "", "");
+            prefillBank("", "");
             name.setInvalid(false);
             street.setInvalid(false);
             zip.setInvalid(false);
@@ -865,6 +856,8 @@ public class MainView extends VerticalLayout {
             countryCode.setInvalid(false);
             vatId.setInvalid(false);
             email.setInvalid(false);
+            iban.setInvalid(false);
+            bic.setInvalid(false);
         }
 
         /** @return true, wenn die E-Mail-Adresse gültig (oder leer) ist. */
@@ -915,6 +908,16 @@ public class MainView extends VerticalLayout {
             } else if (!checkEmail()) {
                 errors.add(partyLabel + ": E-Mail-Adresse ist ungültig.");
             }
+            if (vatRequired) {
+                if (requireFilled(iban, partyLabel + ": IBAN ist ein Pflichtfeld.", errors)
+                        && !IbanValidator.isValid(iban.getValue())) {
+                    markInvalid(iban, partyLabel + ": IBAN ist ungültig (Prüfsumme).", errors);
+                }
+                if (requireFilled(bic, partyLabel + ": BIC ist ein Pflichtfeld.", errors)
+                        && !bic.getValue().trim().matches("[A-Za-z]{6}[A-Za-z0-9]{2}([A-Za-z0-9]{3})?")) {
+                    markInvalid(bic, partyLabel + ": BIC muss 8 oder 11 Stellen haben, z. B. NOLADE21RZB.", errors);
+                }
+            }
             return errors;
         }
 
@@ -927,7 +930,7 @@ public class MainView extends VerticalLayout {
                     countryCode.getValue().trim().toUpperCase(),
                     vatId.isEmpty() ? "" : VatIdValidator.normalize(vatId.getValue()),
                     email.getValue().trim(),
-                    phone.getValue().trim()
+                    ""
             );
         }
     }

src/main/java/de/assecutor/pdftool/ui/SystemMessagesConfiguration.java

@@ -0,0 +1,37 @@
+package de.assecutor.pdftool.ui;
+
+import com.vaadin.flow.server.CustomizedSystemMessages;
+import com.vaadin.flow.server.ServiceInitEvent;
+import com.vaadin.flow.server.VaadinServiceInitListener;
+import org.springframework.stereotype.Component;
+
+/**
+ * Verhindert das stille Neuladen der Seite durch Vaadin: Standardmäßig lädt
+ * Vaadin bei abgelaufener Session (z. B. nach einem Neustart der Anwendung)
+ * oder internen Fehlern die Seite sofort und ohne Hinweis neu — mitten in der
+ * Arbeit im Rechnungsgenerator. Stattdessen wird jetzt eine Meldung angezeigt;
+ * die Seite lädt erst neu, wenn der Benutzer die Meldung bestätigt.
+ */
+@Component
+public class SystemMessagesConfiguration implements VaadinServiceInitListener {
+
+    @Override
+    public void serviceInit(ServiceInitEvent event) {
+        event.getSource().setSystemMessagesProvider(info -> {
+            CustomizedSystemMessages messages = new CustomizedSystemMessages();
+
+            messages.setSessionExpiredNotificationEnabled(true);
+            messages.setSessionExpiredCaption("Sitzung abgelaufen");
+            messages.setSessionExpiredMessage("Die Sitzung ist abgelaufen, z. B. durch einen Neustart der "
+                    + "Anwendung. Zum Fortfahren klicken — nicht gespeicherte Änderungen im "
+                    + "Rechnungsgenerator werden wiederhergestellt.");
+
+            messages.setInternalErrorNotificationEnabled(true);
+            messages.setInternalErrorCaption("Interner Fehler");
+            messages.setInternalErrorMessage("Es ist ein interner Fehler aufgetreten. "
+                    + "Zum Fortfahren klicken; die Seite wird danach neu geladen.");
+
+            return messages;
+        });
+    }
+}

src/main/java/de/assecutor/pdftool/ui/TemplateGeneratorView.java

@@ -19,6 +19,7 @@ import com.vaadin.flow.component.icon.VaadinIcon;
 import com.vaadin.flow.component.notification.Notification;
 import com.vaadin.flow.component.orderedlayout.HorizontalLayout;
 import com.vaadin.flow.component.orderedlayout.VerticalLayout;
+import com.vaadin.flow.component.textfield.TextArea;
 import com.vaadin.flow.component.textfield.TextField;
 import com.vaadin.flow.component.upload.Upload;
 import com.vaadin.flow.component.upload.receivers.MemoryBuffer;
@@ -38,6 +39,7 @@ import java.time.format.DateTimeFormatter;
 import java.util.Base64;
 import java.util.LinkedHashMap;
 import java.util.List;
+import java.util.Locale;
 import java.util.Map;
 import java.util.Optional;
 
@@ -58,6 +60,13 @@ public class TemplateGeneratorView extends VerticalLayout {
 
     private static final BigDecimal VAT_RATE = new BigDecimal("0.19");
 
+    // Canvas-Basisgröße (px) und A4-Maße (mm) zur Umrechnung der
+    // Positionsangaben in der Eigenschaften-Sidebar
+    private static final double BASE_PAGE_WIDTH_PX = 595;
+    private static final double BASE_PAGE_HEIGHT_PX = 842;
+    private static final double A4_WIDTH_MM = 210;
+    private static final double A4_HEIGHT_MM = 297;
+
     private final TemplatePdfService templatePdfService;
     private final InvoiceTemplateService invoiceTemplateService;
     private final CapturedInvoiceData capturedInvoiceData;
@@ -70,6 +79,15 @@ public class TemplateGeneratorView extends VerticalLayout {
     /** Name des zuletzt geladenen bzw. gespeicherten Templates. */
     private String currentTemplateName;
 
+    /**
+     * Hintergrundbild der Zeichenfläche als Data-URL. Es wird serverseitig
+     * gehalten und erst beim Speichern bzw. für die Vorschau ins Template-JSON
+     * übernommen — die große Bild-Payload würde sonst bei jedem
+     * getProfileCanvasData-Aufruf das Limit für Client-zu-Server-Übertragungen
+     * sprengen.
+     */
+    private String backgroundImage;
+
     public TemplateGeneratorView(TemplatePdfService templatePdfService,
             InvoiceTemplateService invoiceTemplateService, CapturedInvoiceData capturedInvoiceData) {
         this.templatePdfService = templatePdfService;
@@ -141,18 +159,67 @@ public class TemplateGeneratorView extends VerticalLayout {
         loadInitialTemplate();
     }
 
-    /** Lädt beim Start das Standard-Template bzw. das erste vorhandene Template. */
+    /**
+     * Beim Öffnen der Seite wird kein Template geladen; die Zeichenfläche
+     * bleibt leer, bis der Benutzer ein Template in der Combobox auswählt.
+     * Nur ein automatisch gesicherter Arbeitsstand (z. B. nach einem
+     * Seiten-Reload durch Session-Ablauf) wird wiederhergestellt.
+     */
     private void loadInitialTemplate() {
         List<String> names = invoiceTemplateService.templateNames();
         templateSelect.setItems(names);
-        if (names.isEmpty()) {
+
-            return;
+        Optional<String> autosave = invoiceTemplateService.loadAutosave();
+        if (autosave.isPresent()) {
+            restoreAutosave(autosave.get(), names);
+        }
+    }
+
+    /** Stellt den automatisch gesicherten Arbeitsstand auf der Zeichenfläche wieder her. */
+    private void restoreAutosave(String autosaveData, List<String> names) {
+        String templateName = readJsonTextField(autosaveData, "autosaveOf");
+        if (templateName != null && names.contains(templateName)) {
+            currentTemplateName = templateName;
+            templateSelect.setValue(templateName);
+        }
+        backgroundImage = readBackgroundImage(autosaveData);
+        getElement().executeJs("setTimeout(function() { "
+                + "  if (window.loadProfileTemplate && document.getElementById('invoice-canvas-container-profile')) { "
+                + "    window.loadProfileTemplate(JSON.parse($0)); "
+                + "  } else { console.error('loadProfileTemplate or canvas not available'); } "
+                + "}, 300);", autosaveData);
+        showNotification("Nicht gespeicherte Änderungen wurden wiederhergestellt.");
+    }
+
+    /**
+     * Sichert den Canvas-Stand als Autosave (Aufruf aus dem JavaScript,
+     * zeitversetzt nach jeder Änderung). Das Hintergrundbild und der Name des
+     * zugrunde liegenden Templates werden serverseitig ergänzt.
+     */
+    @ClientCallable
+    public void autosaveCanvas(String templateData) {
+        try {
+            ObjectMapper mapper = new ObjectMapper();
+            com.fasterxml.jackson.databind.node.ObjectNode root =
+                    (com.fasterxml.jackson.databind.node.ObjectNode) mapper.readTree(withBackgroundImage(templateData));
+            if (currentTemplateName != null && !currentTemplateName.isBlank()) {
+                root.put("autosaveOf", currentTemplateName);
+            }
+            invoiceTemplateService.saveAutosave(mapper.writeValueAsString(root));
+        } catch (Exception ex) {
+            log.warn("Autosave des Canvas fehlgeschlagen: {}", ex.getMessage());
+        }
+    }
+
+    /** Liest ein Textfeld aus dem Template-JSON; {@code null}, wenn nicht vorhanden. */
+    private static String readJsonTextField(String templateData, String fieldName) {
+        try {
+            com.fasterxml.jackson.databind.JsonNode node =
+                    new ObjectMapper().readTree(templateData).get(fieldName);
+            return node == null || node.isNull() || node.asText().isEmpty() ? null : node.asText();
+        } catch (Exception ex) {
+            return null;
         }
-        String initial = names.contains(InvoiceTemplateService.DEFAULT_TEMPLATE_NAME)
-                ? InvoiceTemplateService.DEFAULT_TEMPLATE_NAME
-                : names.get(0);
-        templateSelect.setValue(initial);
-        loadTemplateIntoCanvas(initial);
     }
 
     /** Lädt das Template mit dem Namen auf die Zeichenfläche. */
@@ -164,6 +231,7 @@ public class TemplateGeneratorView extends VerticalLayout {
                 return;
             }
             currentTemplateName = name;
+            backgroundImage = readBackgroundImage(templateData.get());
             getElement().executeJs("setTimeout(function() { "
                     + "  if (window.loadProfileTemplate && document.getElementById('invoice-canvas-container-profile')) { "
                     + "    window.loadProfileTemplate(JSON.parse($0)); "
@@ -234,6 +302,32 @@ public class TemplateGeneratorView extends VerticalLayout {
         return TemplateVariables.canvasPositionsJson(effectiveItems());
     }
 
+    /** Liest das Hintergrundbild aus dem Template-JSON; {@code null}, wenn keines gesetzt ist. */
+    private static String readBackgroundImage(String templateData) {
+        return readJsonTextField(templateData, "backgroundImage");
+    }
+
+    /**
+     * Ergänzt das serverseitig gehaltene Hintergrundbild im Template-JSON aus
+     * der Zeichenfläche (das JavaScript liefert es aus Größengründen nicht mit).
+     */
+    private String withBackgroundImage(String templateData) {
+        try {
+            ObjectMapper mapper = new ObjectMapper();
+            com.fasterxml.jackson.databind.node.ObjectNode root =
+                    (com.fasterxml.jackson.databind.node.ObjectNode) mapper.readTree(templateData);
+            if (backgroundImage != null && !backgroundImage.isEmpty()) {
+                root.put("backgroundImage", backgroundImage);
+            } else {
+                root.remove("backgroundImage");
+            }
+            return mapper.writeValueAsString(root);
+        } catch (Exception ex) {
+            log.warn("Hintergrundbild konnte nicht ins Template übernommen werden: {}", ex.getMessage());
+            return templateData;
+        }
+    }
+
     private String buildMasterdataJson() {
         try {
             return new ObjectMapper().writeValueAsString(buildVariables());
@@ -518,9 +612,13 @@ public class TemplateGeneratorView extends VerticalLayout {
         return info;
     }
 
+    /** Die im Designer und im PDF-Renderer verfügbaren Schriftarten. */
+    private static final List<String> FONT_FAMILIES = List.of("Arial", "Times New Roman", "Courier New", "Verdana");
+
     @ClientCallable
     public void updatePropertiesPanel(String elementId, String elementType, String text, Double x, Double y,
-            Integer fontSize, String color, Double width, Double height, Boolean isStatic, String variable) {
+            Integer fontSize, String color, Double width, Double height, Boolean isStatic, String variable,
+            String fontFamily) {
         getUI().ifPresent(ui -> ui.access(() -> {
             propertiesPanel.removeAll();
 
@@ -573,11 +671,13 @@ public class TemplateGeneratorView extends VerticalLayout {
                 propertiesPanel.add(upload);
             }
 
-            // Textfeld (nur für Text-Elemente)
+            // Textfeld (nur für Text-Elemente); mehrzeilig, Umbrüche werden
+            // als Zeilenumbrüche in das Element übernommen
             if (!"line".equals(elementType) && !"image".equals(elementType)) {
-                TextField textField = new TextField("Text");
+                TextArea textField = new TextArea("Text");
                 textField.setValue(text != null ? text : "");
                 textField.setWidthFull();
+                textField.setMinHeight("6em");
                 if (Boolean.TRUE.equals(isStatic)) {
                     textField.setReadOnly(true);
                     textField.setHelperText("Wert wird aus den Stammdaten befüllt");
@@ -589,40 +689,90 @@ public class TemplateGeneratorView extends VerticalLayout {
                 propertiesPanel.add(textField);
             }
 
-            // X Position
+            // X Position (Anzeige in mm, Canvas rechnet intern in px)
-            TextField xField = new TextField("X Position");
+            TextField xField = new TextField("X Position (mm)");
-            xField.setValue(x != null ? String.valueOf(Math.round(x)) : "0");
+            xField.setValue(formatMm(x != null ? pxToMm(x, BASE_PAGE_WIDTH_PX, A4_WIDTH_MM) : 0));
             xField.setWidthFull();
             xField.addValueChangeListener(e -> {
                 try {
-                    double newX = Double.parseDouble(e.getValue());
+                    double newXPx = mmToPx(parseMm(e.getValue()), BASE_PAGE_WIDTH_PX, A4_WIDTH_MM);
                     getElement().executeJs(
                             "if (window.updateProfileElementPosition) { window.updateProfileElementPosition('"
                                     + elementId + "', $0, null); }",
-                            newX);
+                            newXPx);
                 } catch (NumberFormatException ignored) {
                 }
             });
             propertiesPanel.add(xField);
 
-            // Y Position
+            // Y Position (Anzeige in mm, Canvas rechnet intern in px)
-            TextField yField = new TextField("Y Position");
+            TextField yField = new TextField("Y Position (mm)");
-            yField.setValue(y != null ? String.valueOf(Math.round(y)) : "0");
+            yField.setValue(formatMm(y != null ? pxToMm(y, BASE_PAGE_HEIGHT_PX, A4_HEIGHT_MM) : 0));
             yField.setWidthFull();
             yField.addValueChangeListener(e -> {
                 try {
-                    double newY = Double.parseDouble(e.getValue());
+                    double newYPx = mmToPx(parseMm(e.getValue()), BASE_PAGE_HEIGHT_PX, A4_HEIGHT_MM);
                     getElement().executeJs(
                             "if (window.updateProfileElementPosition) { window.updateProfileElementPosition('"
                                     + elementId + "', null, $0); }",
-                            newY);
+                            newYPx);
                 } catch (NumberFormatException ignored) {
                 }
             });
             propertiesPanel.add(yField);
 
-            // Schriftgröße und Farbe (nur für Text-Elemente)
+            // Breite (Anzeige in mm); bei Linien bestimmt sie die Länge
+            TextField widthField = new TextField("Breite (mm)");
+            widthField.setValue(formatMm(width != null ? pxToMm(width, BASE_PAGE_WIDTH_PX, A4_WIDTH_MM) : 0));
+            widthField.setWidthFull();
+            widthField.addValueChangeListener(e -> {
+                try {
+                    double newWidthPx = mmToPx(parseMm(e.getValue()), BASE_PAGE_WIDTH_PX, A4_WIDTH_MM);
+                    getElement().executeJs(
+                            "if (window.updateProfileElementSize) { window.updateProfileElementSize('"
+                                    + elementId + "', $0, null); }",
+                            newWidthPx);
+                } catch (NumberFormatException ignored) {
+                }
+            });
+            propertiesPanel.add(widthField);
+
+            // Höhe (Anzeige in mm); für Linien ohne Bedeutung
+            if (!"line".equals(elementType)) {
+                TextField heightField = new TextField("Höhe (mm)");
+                heightField.setValue(formatMm(height != null ? pxToMm(height, BASE_PAGE_HEIGHT_PX, A4_HEIGHT_MM) : 0));
+                heightField.setWidthFull();
+                heightField.addValueChangeListener(e -> {
+                    try {
+                        double newHeightPx = mmToPx(parseMm(e.getValue()), BASE_PAGE_HEIGHT_PX, A4_HEIGHT_MM);
+                        getElement().executeJs(
+                                "if (window.updateProfileElementSize) { window.updateProfileElementSize('"
+                                        + elementId + "', null, $0); }",
+                                newHeightPx);
+                    } catch (NumberFormatException ignored) {
+                    }
+                });
+                propertiesPanel.add(heightField);
+            }
+
+            // Schriftart, Schriftgröße und Farbe (nur für Text-Elemente)
             if (!"line".equals(elementType) && !"image".equals(elementType)) {
+                ComboBox<String> fontFamilySelect = new ComboBox<>("Schriftart");
+                fontFamilySelect.setItems(FONT_FAMILIES);
+                fontFamilySelect.setValue(fontFamily != null && FONT_FAMILIES.contains(fontFamily)
+                        ? fontFamily
+                        : "Arial");
+                fontFamilySelect.setWidthFull();
+                fontFamilySelect.addValueChangeListener(e -> {
+                    if (e.getValue() != null) {
+                        getElement().executeJs(
+                                "if (window.updateProfileElementFontFamily) { window.updateProfileElementFontFamily('"
+                                        + elementId + "', $0); }",
+                                e.getValue());
+                    }
+                });
+                propertiesPanel.add(fontFamilySelect);
+
                 TextField fontSizeField = new TextField("Schriftgröße");
                 fontSizeField.setValue(fontSize != null ? String.valueOf(fontSize) : "16");
                 fontSizeField.setWidthFull();
@@ -692,6 +842,73 @@ public class TemplateGeneratorView extends VerticalLayout {
         }));
     }
 
+    /**
+     * Zeigt die Einstellungen der Zeichenfläche in der Sidebar an (Aufruf aus
+     * dem JavaScript bei Klick auf die leere Zeichenfläche). Einzige
+     * Einstellung ist derzeit das Hintergrundbild: Es wird auf Seitengröße
+     * skaliert und liegt immer hinter allen Elementen.
+     */
+    @ClientCallable
+    public void showCanvasProperties(Boolean hasBackground) {
+        getUI().ifPresent(ui -> ui.access(() -> {
+            propertiesPanel.removeAll();
+
+            Span typeLabel = new Span("Zeichenfläche");
+            typeLabel.addClassName("invoice-generator-info");
+            propertiesPanel.add(propertiesHeader(), typeLabel);
+
+            Span backgroundLabel = new Span("Hintergrundbild");
+            backgroundLabel.getStyle().set("font-weight", "bold")
+                    .set("font-size", "var(--lumo-font-size-s)");
+            propertiesPanel.add(backgroundLabel);
+
+            MemoryBuffer buffer = new MemoryBuffer();
+            Upload upload = new Upload(buffer);
+            upload.setAcceptedFileTypes("image/png", "image/jpeg", "image/jpg", "image/gif", "image/webp");
+            upload.setMaxFileSize(5 * 1024 * 1024); // 5 MB
+            upload.setDropLabel(new Span("Bild hierher ziehen oder klicken"));
+            upload.setWidthFull();
+
+            upload.addSucceededListener(event -> {
+                try {
+                    byte[] bytes = buffer.getInputStream().readAllBytes();
+                    String dataUrl = "data:" + event.getMIMEType() + ";base64,"
+                            + Base64.getEncoder().encodeToString(bytes);
+                    backgroundImage = dataUrl;
+                    getElement().executeJs(
+                            "if (window.updateProfileCanvasBackground) { window.updateProfileCanvasBackground($0); }",
+                            dataUrl);
+                    showNotification("Hintergrundbild übernommen.");
+                    showCanvasProperties(true);
+                } catch (Exception ex) {
+                    showNotification("Bild konnte nicht geladen werden: " + ex.getMessage());
+                }
+            });
+            upload.addFileRejectedListener(event ->
+                    showNotification("Datei abgelehnt: " + event.getErrorMessage()));
+            propertiesPanel.add(upload);
+
+            Div info = new Div();
+            info.setText("Das Bild wird auf die Seitengröße skaliert und hinter allen Elementen angezeigt.");
+            info.addClassName("invoice-generator-info");
+            propertiesPanel.add(info);
+
+            if (Boolean.TRUE.equals(hasBackground)) {
+                Button removeBackground = new Button("Hintergrundbild entfernen", new Icon(VaadinIcon.TRASH));
+                removeBackground.addThemeVariants(ButtonVariant.LUMO_ERROR, ButtonVariant.LUMO_TERTIARY);
+                removeBackground.setWidthFull();
+                removeBackground.addClickListener(e -> {
+                    backgroundImage = null;
+                    getElement().executeJs(
+                            "if (window.updateProfileCanvasBackground) { window.updateProfileCanvasBackground(null); }");
+                    showNotification("Hintergrundbild entfernt.");
+                    showCanvasProperties(false);
+                });
+                propertiesPanel.add(removeBackground);
+            }
+        }));
+    }
+
     @ClientCallable
     public void resetPropertiesPanel() {
         getUI().ifPresent(ui -> ui.access(() -> {
@@ -703,6 +920,26 @@ public class TemplateGeneratorView extends VerticalLayout {
         }));
     }
 
+    /** Rechnet eine Canvas-Position (px) in mm auf der A4-Seite um. */
+    private static double pxToMm(double px, double basePx, double sizeMm) {
+        return px / basePx * sizeMm;
+    }
+
+    /** Rechnet eine mm-Angabe in die Canvas-Position (px) um. */
+    private static double mmToPx(double mm, double basePx, double sizeMm) {
+        return mm / sizeMm * basePx;
+    }
+
+    /** Formatiert eine mm-Angabe mit einer Nachkommastelle, z. B. "20,5". */
+    private static String formatMm(double mm) {
+        return String.format(Locale.GERMANY, "%.1f", mm);
+    }
+
+    /** Liest eine mm-Angabe; Komma und Punkt sind als Dezimaltrenner erlaubt. */
+    private static double parseMm(String value) {
+        return Double.parseDouble(value.trim().replace(',', '.'));
+    }
+
     private String getVariableDescription(String variable) {
         return switch (variable) {
         case "masterdata.company_name" -> "Firmenname des Rechnungsstellers";
@@ -778,7 +1015,7 @@ public class TemplateGeneratorView extends VerticalLayout {
                         showNotification("Zeichenfläche ist nicht bereit.");
                         return;
                     }
-                    openSaveDialog(templateData);
+                    openSaveDialog(withBackgroundImage(templateData));
                 });
     }
 
@@ -831,6 +1068,8 @@ public class TemplateGeneratorView extends VerticalLayout {
     private void doSaveTemplate(String name, String templateData) {
         try {
             invoiceTemplateService.saveTemplate(name, templateData);
+            // Explizit gespeichert: der Autosave-Arbeitsstand ist damit erledigt.
+            invoiceTemplateService.clearAutosave();
             currentTemplateName = name;
             templateSelect.setItems(invoiceTemplateService.templateNames());
             templateSelect.setValue(name);
@@ -849,7 +1088,8 @@ public class TemplateGeneratorView extends VerticalLayout {
                         return;
                     }
                     try {
-                        byte[] pdfBytes = templatePdfService.generatePdf(templateData, buildVariables(), VAT_RATE);
+                        byte[] pdfBytes = templatePdfService.generatePdf(withBackgroundImage(templateData),
+                                buildVariables(), VAT_RATE);
                         showPdfInDialog(pdfBytes);
                     } catch (Exception ex) {
                         showNotification("Vorschau konnte nicht erzeugt werden: " + ex.getMessage());

src/main/resources/application.properties

@@ -1,12 +1,29 @@
 spring.application.name=pdf-tool
 server.port=${SERVER_PORT:8083}
 
+# Session erst nach 12 h Inaktivität verwerfen: Der Standard von 30 Minuten
+# führte dazu, dass Vaadin nach längerer Untätigkeit (Tab inaktiv, Standby)
+# die Seite neu lädt und ungespeicherte Canvas-Änderungen verloren gehen.
+server.servlet.session.timeout=12h
+
+# Eigener Name für den Session-Cookie: Der Standardname JSESSIONID gilt pro
+# Hostname (nicht pro Port). Andere lokal laufende Java-Anwendungen auf
+# demselben Rechner überschreiben sich sonst gegenseitig den Cookie, und die
+# Session des PDF-Tools ist scheinbar sofort "abgelaufen".
+server.servlet.session.cookie.name=PDFTOOL_SESSION
+
 # Wird beim Build durch die Version aus der pom.xml ersetzt (Resource-Filtering)
 pdftool.version=@project.version@
 
 spring.servlet.multipart.max-file-size=25MB
 spring.servlet.multipart.max-request-size=30MB
 
+# Auch normale (Nicht-Multipart-)Requests bis 30 MB zulassen: Canvas-Daten mit
+# eingebetteten Bild-Elementen können das Tomcat-Standardlimit von 2 MB
+# überschreiten; ein abgelehnter Request führt im Browser sonst zu einem
+# Vaadin-Kommunikationsfehler mit anschließendem Seiten-Reload.
+server.tomcat.max-http-form-post-size=30MB
+
 vaadin.launch-browser=false
 
 # Zugangsdaten aus der .env-Datei im Projektverzeichnis laden (falls vorhanden)