Merge pull request #2 from alexoh2bd/update-readme-diagram

Diagram update: Include VADER & adjust colors in dark theme

README.md

@@ -107,7 +107,7 @@ flowchart TB
     end
     
     subgraph Processing["🧠 Data Processing"]
-        F["TextBlob<br/>Sentiment Engine"]
+        F["TextBlob + VADER<br/>Sentiment Engines"]
         G["Plotly<br/>Visualizations"]
         H["Pandas<br/>Data Processing"]
     end
@@ -127,10 +127,10 @@ flowchart TB
     C --> I
     C --> J
     
-    classDef frontend fill:#e3f2fd,stroke:#1976d2,stroke-width:2px
-    classDef application fill:#fff3e0,stroke:#f57c00,stroke-width:2px
-    classDef processing fill:#f3e5f5,stroke:#7b1fa2,stroke-width:2px
-    classDef external fill:#fce4ec,stroke:#c2185b,stroke-width:2px
+    classDef frontend fill:#1f6feb,stroke:#58a6ff,stroke-width:2px,color:#f0f6fc
+    classDef application fill:#2ea043,stroke:#3fb950,stroke-width:2px,color:#f0f6fc
+    classDef processing fill:#a371f7,stroke:#d2a8ff,stroke-width:2px,color:#f0f6fc
+    classDef external fill:#f85149,stroke:#ff7b72,stroke-width:2px,color:#f0f6fc
     
     class A,B frontend
     class C,D,E application