diff --git a/app.js b/app.js
index 8f47933..3738078 100644
--- a/app.js
+++ b/app.js
@@ -2403,7 +2403,16 @@ async function openPageActionsModal(berichtId, pageId, relpath, note, title) {
 /* ============================================================
  * PDF-VORSCHAU MODAL
  * ============================================================ */
-function openPdfModal(blobUrl, filename) {
+/**
+ * Der EINE PDF-Betrachter der App — Berichtsvorschau, Lieferschein und Dokumente am Auftrag.
+ * Bis 15.10.2026 gab es zwei: die Dokumente öffneten einen älteren ohne Zoom (eine Seite,
+ * nur Vor/Zurück), deshalb ging „Finger auseinanderziehen" dort nicht.
+ *
+ * @param {string}   blobUrl
+ * @param {string}   filename
+ * @param {Function} [beiDownload] eigener Download-Weg (z. B. Originaldatei vom Server)
+ */
+function openPdfModal(blobUrl, filename, beiDownload) {
     const fname = filename || 'bericht.pdf';
     const modal = document.createElement('div');
     modal.className = 'fullscreen-modal pdfv-modal';
@@ -2432,6 +2441,9 @@ function openPdfModal(blobUrl, filename) {
             await shareFile(blob, fname, 'application/pdf', fname);
         } catch (e) { showToast('Teilen fehlgeschlagen: ' + e.message, 'error'); }
     };
+    if (typeof beiDownload === 'function') {
+        modal.querySelector('#pdf-download').onclick = (e) => { e.preventDefault(); beiDownload(); };
+    }
 
     const scroller = modal.querySelector('#pdfv-scroll');
     const stack = modal.querySelector('#pdfv-stack');
@@ -3268,86 +3280,17 @@ function openFileViewer({ url, blob, mime }, filename, relpath) {
 }
 
 async function openPdfViewer(blob, filename, relpath) {
-    console.log('[PDF] Opening:', filename, 'size:', blob.size, 'type:', blob.type);
-
-    if (blob.size === 0) {
+    if (!blob || blob.size === 0) {
         showToast('❌ PDF-Datei ist leer oder nicht gefunden', 'error');
         return;
     }
-
-    const modal = document.createElement('div');
-    modal.className = 'fullscreen-modal pdf-viewer-modal';
-    modal.innerHTML = `
-        <div class="fs-header">
-            <button class="icon-btn" id="pdf-prev" title="← Seite zurück">‹</button>
-            <div class="pdf-page-info" id="pdf-page-info">⏳</div>
-            <button class="icon-btn" id="pdf-next" title="Seite vor →">›</button>
-            <div class="fs-title">${escapeHtml(filename || '')}</div>
-            <button class="icon-btn" id="pdf-close">✕</button>
-            <button class="icon-btn" id="pdf-share" title="Teilen">📤</button>
-            <button class="icon-btn" id="pdf-download" title="Download">⬇</button>
-        </div>
-        <div class="pdf-body" id="pdf-body">
-            <canvas id="pdf-canvas"></canvas>
-        </div>
-    `;
-    document.body.appendChild(modal);
-    pushModal(modal);
-
-    const canvas = modal.querySelector('#pdf-canvas');
-    const ctx = canvas.getContext('2d');
-    const pageInfo = modal.querySelector('#pdf-page-info');
-    let pdf, currentPage = 1;
-
-    try {
-        const arrayBuffer = await blob.arrayBuffer();
-        console.log('[PDF] ArrayBuffer size:', arrayBuffer.byteLength);
-
-        if (arrayBuffer.byteLength === 0) {
-            throw new Error('PDF-Datei ist leer');
-        }
-
-        pdf = await pdfjs.getDocument(new Uint8Array(arrayBuffer)).promise;
-        console.log('[PDF] Loaded:', pdf.numPages, 'pages');
-        pageInfo.textContent = `1 / ${pdf.numPages}`;
-
-        async function renderPage(num) {
-            if (num < 1 || num > pdf.numPages) return;
-            currentPage = num;
-            try {
-                const page = await pdf.getPage(num);
-                const viewport = page.getViewport({ scale: window.devicePixelRatio });
-                canvas.width = viewport.width;
-                canvas.height = viewport.height;
-                await page.render({ canvasContext: ctx, viewport }).promise;
-                pageInfo.textContent = `${num} / ${pdf.numPages}`;
-            } catch (e) {
-                console.error('[PDF] Render error on page', num, e);
-                pageInfo.textContent = `❌ Seite ${num} Fehler`;
-            }
-        }
-
-        await renderPage(1);
-        modal.querySelector('#pdf-prev').onclick = () => renderPage(currentPage - 1);
-        modal.querySelector('#pdf-next').onclick = () => renderPage(currentPage + 1);
-        modal.querySelector('#pdf-download').onclick = async () => {
-            const params = new URLSearchParams({ relpath, download: 1 });
-            window.location.href = window.location.origin + '/custom/bericht/api/photo.php?' + params.toString();
-        };
-        modal.querySelector('#pdf-share').onclick = () => {
-            shareFile(blob, filename || 'dokument.pdf', 'application/pdf', filename);
-        };
-        modal.querySelector('#pdf-prev').disabled = false;
-        modal.querySelector('#pdf-next').disabled = pdf.numPages === 1;
-    } catch (err) {
-        pageInfo.textContent = '❌ ' + (err.message || 'PDF-Fehler');
-        console.error('[PDF] Load error:', err);
-        showToast('PDF-Fehler: ' + err.message, 'error');
-    }
-
-    modal.querySelector('#pdf-close').onclick = () => {
-        closeModal(modal);
-    };
+    // Derselbe Betrachter wie überall (Zoom per Knopf, Zwei-Finger, Doppeltipp, Strg+Rad).
+    // Download wie bisher als Originaldatei vom Server, nicht aus dem Zwischenspeicher.
+    const url = URL.createObjectURL(blob);
+    openPdfModal(url, filename || 'dokument.pdf', relpath ? () => {
+        const params = new URLSearchParams({ relpath, download: 1 });
+        window.location.href = window.location.origin + '/custom/bericht/api/photo.php?' + params.toString();
+    } : null);
 }
 
 /* ============================================================