diff --git a/frontend/src/pages/AdminPromptsPage.jsx b/frontend/src/pages/AdminPromptsPage.jsx
index 66b7edf..f364c1b 100644
--- a/frontend/src/pages/AdminPromptsPage.jsx
+++ b/frontend/src/pages/AdminPromptsPage.jsx
@@ -21,6 +21,7 @@ export default function AdminPromptsPage() {
   const [showNewPrompt, setShowNewPrompt] = useState(false)
   const [importing, setImporting] = useState(false)
   const [importResult, setImportResult] = useState(null)
+  const [importDialogData, setImportDialogData] = useState(null) // {count, fileData, event}
 
   const categories = [
     { id: 'all', label: 'Alle Kategorien' },
@@ -194,7 +195,6 @@ export default function AdminPromptsPage() {
     const file = event.target.files[0]
     if (!file) return
 
-    setImporting(true)
     setError(null)
     setImportResult(null)
 
@@ -202,28 +202,34 @@ export default function AdminPromptsPage() {
       const text = await file.text()
       const data = JSON.parse(text)
 
-      // Two-step confirmation for clarity
-      // Step 1: Confirm import
-      const shouldImport = confirm(
-        `${data.count || 0} Prompts importieren?\n\n` +
-        'OK = Fortfahren\n' +
-        'Abbrechen = Import abbrechen'
-      )
+      // Show custom 3-button dialog
+      setImportDialogData({
+        count: data.count || 0,
+        fileData: data,
+        event: event
+      })
+    } catch (e) {
+      setError('Import-Fehler: ' + e.message)
+      event.target.value = '' // Reset file input
+    }
+  }
 
-      if (!shouldImport) {
-        setImporting(false)
-        event.target.value = ''
-        return
-      }
+  const handleImportChoice = async (choice) => {
+    if (!importDialogData) return
 
-      // Step 2: Ask about overwrite
-      const overwrite = confirm(
-        'Existierende Prompts überschreiben?\n\n' +
-        'OK = Ja, bestehende Prompts aktualisieren\n' +
-        'Abbrechen = Nein, nur neue Prompts erstellen'
-      )
+    const { fileData, event } = importDialogData
+    setImportDialogData(null) // Close dialog
 
-      const result = await api.importPrompts(data, overwrite)
+    if (choice === 'cancel') {
+      event.target.value = '' // Reset file input
+      return
+    }
+
+    setImporting(true)
+
+    try {
+      const overwrite = choice === 'yes' // 'yes' = overwrite, 'no' = skip existing
+      const result = await api.importPrompts(fileData, overwrite)
       setImportResult(result)
       await loadPrompts()
     } catch (e) {
@@ -621,6 +627,70 @@ export default function AdminPromptsPage() {
           }}
         />
       )}
+
+      {/* Import Dialog - 3 Button Choice */}
+      {importDialogData && (
+        <div style={{
+          position: 'fixed',
+          top: 0,
+          left: 0,
+          right: 0,
+          bottom: 0,
+          background: 'rgba(0,0,0,0.5)',
+          display: 'flex',
+          alignItems: 'center',
+          justifyContent: 'center',
+          zIndex: 9999
+        }}>
+          <div style={{
+            background: 'var(--bg)',
+            borderRadius: 12,
+            padding: 24,
+            maxWidth: 500,
+            width: '90%',
+            boxShadow: '0 4px 20px rgba(0,0,0,0.2)'
+          }}>
+            <h3 style={{ marginTop: 0, marginBottom: 16, fontSize: 18 }}>
+              {importDialogData.count} Prompts importieren?
+            </h3>
+            <p style={{ marginBottom: 24, color: 'var(--text2)', lineHeight: 1.5 }}>
+              Wie sollen existierende Prompts behandelt werden?
+            </p>
+
+            <div style={{ display: 'flex', flexDirection: 'column', gap: 12 }}>
+              <button
+                className="btn btn-primary"
+                onClick={() => handleImportChoice('yes')}
+                style={{ width: '100%' }}
+              >
+                Ja, überschreiben
+                <div style={{ fontSize: 12, opacity: 0.8, marginTop: 4 }}>
+                  Bestehende Prompts aktualisieren
+                </div>
+              </button>
+
+              <button
+                className="btn"
+                onClick={() => handleImportChoice('no')}
+                style={{ width: '100%' }}
+              >
+                Nein, nur neue
+                <div style={{ fontSize: 12, opacity: 0.8, marginTop: 4 }}>
+                  Nur neue Prompts erstellen, bestehende überspringen
+                </div>
+              </button>
+
+              <button
+                className="btn btn-secondary"
+                onClick={() => handleImportChoice('cancel')}
+                style={{ width: '100%' }}
+              >
+                Abbrechen
+              </button>
+            </div>
+          </div>
+        </div>
+      )}
     </div>
   )
 }