Theme dark mode: keep Montfort palette in dark mode (deep blue surface, turquoise CTAs)

app.py

@@ -300,11 +300,23 @@ theme = gr.themes.Soft(
     neutral_hue=gr.themes.colors.stone,
     font=[gr.themes.GoogleFont("Inter"), "system-ui", "sans-serif"],
 ).set(
+    # Light mode (Montfort cream surface, white panels)
     body_background_fill="#f1ede5",
     block_background_fill="white",
+    block_border_color="#dee2e6",
     button_primary_background_fill="#00729a",
     button_primary_background_fill_hover="#005f81",
     button_primary_text_color="white",
+    # Dark mode (keep the Montfort identity — deep blue surface, lighter blue panels)
+    body_background_fill_dark="#002836",
+    block_background_fill_dark="#003a4f",
+    block_border_color_dark="#005f81",
+    button_primary_background_fill_dark="#47c9cd",
+    button_primary_background_fill_hover_dark="#23b6ba",
+    button_primary_text_color_dark="#001a25",
+    body_text_color_dark="#eef7fa",
+    block_label_text_color_dark="#c6eafa",
+    block_title_text_color_dark="#eef7fa",
 )