chore: cleanup website files

- Remove website/dashboards/ directory
- Remove website/aitbc-proxy.conf
- Remove website/README.md
- Update website documentation files with minimum Python version
- Update website assets (CSS, JS) for improved performance
- Update docs/ with minimum Python version and updated paths

website/docs/css/docs.css

@@ -30,6 +30,22 @@
     --code-text: #e6edf3;
 }
 
+/* Light mode */
+body.light {
+    --primary-color: #2563eb;
+    --secondary-color: #7c3aed;
+    --accent-color: #0ea5e9;
+    --success-color: #10b981;
+    --warning-color: #f59e0b;
+    --danger-color: #ef4444;
+    --text-dark: #1f2937;
+    --text-light: #6b7280;
+    --bg-light: #f9fafb;
+    --bg-white: #ffffff;
+    --border-color: #e5e7eb;
+    --code-bg: #1f2937;
+    --code-text: #e5e7eb;
+}
 
 /* ============================================
    Base Styles
@@ -223,7 +239,7 @@ nav {
    ============================================ */
 
 main {
-    margin-top: 90px;
+    margin-top: 80px;
     padding: 40px 0;
 }