Restyle app to match OHA branding

app.py

@@ -960,6 +960,10 @@ blockquote {
     border: 1px solid #E0E0E0 !important;
     border-radius: 4px !important;
 }
+/* Hide the share button in chatbot (removed in Gradio 6 API) */
+.chatbot button[aria-label="Share"],
+.chatbot .share-button,
+.chatbot svg.share-icon { display: none !important; }
 
 /* ---------- MAP ---------- */
 .map-embed iframe {
@@ -1127,8 +1131,6 @@ def create_interface():
             chatbot = gr.Chatbot(
                 label="Conversation",
                 height=350,
-                show_share_button=False,
-                show_copy_button=True,
             )
 
             # Suggested prompt buttons (pill-shaped via CSS)
@@ -1475,7 +1477,25 @@ def create_interface():
 demo = create_interface()
 
 if __name__ == "__main__":
-    demo.launch(auth=("oha", DEMO_PASSWORD))
+    demo.launch(
+        auth=("oha", DEMO_PASSWORD),
+        theme=gr.themes.Default(
+            primary_hue=gr.themes.Color(
+                c50="#F0F4FA", c100="#D6E2F5", c200="#AECAEF",
+                c300="#7BAEE6", c400="#4A8FDB", c500="#0046AD",
+                c600="#003D96", c700="#003478", c800="#002B63",
+                c900="#001B3A", c950="#001028",
+            ),
+            neutral_hue=gr.themes.Color(
+                c50="#F5F5F5", c100="#E0E0E0", c200="#CED4DA",
+                c300="#ADB5BD", c400="#6C757D", c500="#495057",
+                c600="#343A40", c700="#212529", c800="#1A1E21",
+                c900="#111315", c950="#0A0C0D",
+            ),
+            font=["-apple-system", "BlinkMacSystemFont", "Segoe UI", "Roboto", "Helvetica Neue", "Arial", "sans-serif"],
+        ),
+        css=custom_css,
+    )
 
 
 # === TESTS (pytest-compatible) ===