feat: Add PDF constants for styling and layout in CV generation

Author: AryamanSi17

backend/src/constants.js

@@ -1,2 +1,43 @@
 export const DB_NAME = 'nextstepsdbcsvbuilder';
 
+export const PDF_CONSTANTS = {
+    COLORS: {
+        primary: '#2C3E50',
+        secondary: '#34495E',
+        accent: '#3498DB',
+        text: '#2C3E50',
+        lightGray: '#ECF0F1',
+        darkGray: '#7F8C8D'
+    },
+    
+    FONTS: {
+        bold: 'Helvetica-Bold',
+        regular: 'Helvetica',
+        italic: 'Helvetica-Oblique'
+    },
+    
+    SIZES: {
+        heading: 24,
+        section: 14,
+        body: 10,
+        footer: 8,
+        lineHeight: 15
+    },
+    
+    MARGINS: {
+        top: 50,
+        bottom: 50,
+        left: 50,
+        right: 50,
+        indent: 70
+    },
+    
+    PAGE_LIMITS: {
+        pageBreakY: 700,
+        photoX: 480,
+        photoSize: 80,
+        lineEndX: 545,
+        contentWidth: 495,
+        indentWidth: 475
+    }
+};