fix: PDF Leerseite, Button-Größen und Primärfarbe

- PDF-Export: doc.flushPages() vor doc.end() verhindert leere
  Schlussseite (PDFKit bufferPages-Bug nach Footer-Loop)
- ExpertProfileTab: height: 32px für btnPrimary/Secondary/Danger
  sowie chipInput- und headerForm-Inputs → einheitliche Höhe
- Primärfarbe #1a56db → #1040bb (dunkler, besser zum Logo passend)
- LoginPage CSS-Fallback-Gradient ebenfalls auf neue Primärfarbe

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/core-service/src/core/expert-profile/profile-export.service.ts

@@ -604,6 +604,8 @@ export class ProfileExportService {
         }
       }
 
+      // flushPages() vor end() verhindert leere Schlussseite bei bufferPages: true
+      doc.flushPages();
       doc.end();
     });
 

packages/frontend/src/auth/LoginPage.module.css

@@ -3,7 +3,7 @@
   justify-content: center;
   align-items: center;
   min-height: 100vh;
-  background: linear-gradient(135deg, #1a56db 0%, #1e3a5f 100%);
+  background: linear-gradient(135deg, #1040bb 0%, #0a2570 100%);
 }
 
 .card {

packages/frontend/src/index.css

@@ -4,8 +4,8 @@
 
 :root {
   /* Farben - Corporate Design */
-  --color-primary: #1a56db;
-  --color-primary-hover: #1e40af;
+  --color-primary: #1040bb;
+  --color-primary-hover: #0d33a0;
   --color-primary-light: #dbeafe;
   --color-secondary: #6b7280;
   --color-success: #059669;

packages/frontend/src/profile/ExpertProfileTab.module.css

@@ -79,12 +79,14 @@
 
 .headerForm input,
 .headerForm select {
-  padding: 0.3125rem 0.5rem;
+  height: 32px;
+  padding: 0 0.5rem;
   border: 1px solid var(--color-border);
   border-radius: var(--radius-sm);
   font-size: 0.8125rem;
   min-width: 0;
   flex: 1;
+  box-sizing: border-box;
 }
 
 .headerForm input:focus,
@@ -143,12 +145,14 @@
 }
 
 .chipInput input {
-  padding: 0.3125rem 0.5rem;
+  height: 32px;
+  padding: 0 0.5rem;
   border: 1px solid var(--color-border);
   border-radius: var(--radius-sm);
   font-size: 0.8125rem;
   flex: 1;
   min-width: 0;
+  box-sizing: border-box;
 }
 
 .chipInput input:focus {
@@ -274,7 +278,8 @@
 
 /* === Buttons === */
 .btnPrimary {
-  padding: 0.5rem 1rem;
+  height: 32px;
+  padding: 0 1rem;
   background: var(--color-primary);
   color: white;
   border: none;
@@ -284,6 +289,7 @@
   cursor: pointer;
   transition: background 0.15s;
   white-space: nowrap;
+  box-sizing: border-box;
 }
 
 .btnPrimary:hover:not(:disabled) {
@@ -296,7 +302,8 @@
 }
 
 .btnSecondary {
-  padding: 0.5rem 1rem;
+  height: 32px;
+  padding: 0 1rem;
   background: transparent;
   color: var(--color-text-secondary);
   border: 1px solid var(--color-border);
@@ -306,6 +313,7 @@
   cursor: pointer;
   transition: all 0.15s;
   white-space: nowrap;
+  box-sizing: border-box;
 }
 
 .btnSecondary:hover {
@@ -313,7 +321,8 @@
 }
 
 .btnDanger {
-  padding: 0.5rem 1rem;
+  height: 32px;
+  padding: 0 1rem;
   background: var(--color-error);
   color: white;
   border: none;
@@ -323,6 +332,7 @@
   cursor: pointer;
   transition: background 0.15s;
   white-space: nowrap;
+  box-sizing: border-box;
 }
 
 .btnDanger:hover:not(:disabled) {