fix: override primary button text color with higher specificity

app.py

@@ -346,6 +346,19 @@ ul.options, .gr-dropdown-options {
     -webkit-text-fill-color: #ffffff !important;
     fill: #ffffff !important;
 }
+.gr-button-primary,
+.gr-button-primary * {
+    --button-primary-text-color: #ffffff !important;
+    --button-primary-text-color-hover: #ffffff !important;
+    --button-primary-text-color-active: #ffffff !important;
+}
+.gradio-container button.gr-button-primary,
+.gradio-container button.gr-button-primary span,
+.gradio-container button.primary,
+.gradio-container button.primary span {
+    color: #ffffff !important;
+    -webkit-text-fill-color: #ffffff !important;
+}
 
 .gr-button-secondary {
     background: #e2e8f0 !important;