Bob AI: change theme to dark green

src/app/styles/variables.css

@@ -10,13 +10,13 @@
   --accent: #ffffff;
   --background-accent: #ffffff; */
 
-  --background: #fcf6ec;
+  --background: #1b2b35;
-  --card: #f3ede2;
+  --card: #2c3e50;
-  --foreground: #2e2521;
+  --foreground: #ecf0f1;
-  --primary-cta: #2e2521;
+  --primary-cta: #ecf0f1;
-  --secondary-cta: #ffffff;
+  --secondary-cta: #1b2b35;
-  --accent: #b2a28b;
+  --accent: #2ecc71;
-  --background-accent: #b2a28b;
+  --background-accent: #2ecc71;
 
   /* text sizing - set by ThemeProvider */
   /* --text-2xs: clamp(0.465rem, 0.62vw, 0.62rem);