Simplify UI by removing heavy boxes and gray backgrounds

app.py

@@ -66,6 +66,7 @@ CUSTOM_CSS = """
 .gradio-container {
   max-width: 1200px !important;
   font-family: 'Manrope', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif !important;
+  background: #ffffff !important;
 }
 
 .gradio-container * {
@@ -117,17 +118,19 @@ CUSTOM_CSS = """
 }
 
 .section-card {
-  border: 1px solid #e5e7eb;
-  border-radius: 14px;
-  padding: 12px 12px 6px;
-  background: #ffffff;
+  border: none !important;
+  border-radius: 0 !important;
+  padding: 0 !important;
+  background: transparent !important;
+  box-shadow: none !important;
 }
 
 .section-title {
-  font-size: 14px;
+  font-size: 13px;
   font-weight: 700;
-  color: #374151;
-  margin-bottom: 8px;
+  color: #6b7280;
+  margin-bottom: 6px;
+  letter-spacing: 0.02em;
 }
 
 .layout-gap {
@@ -135,7 +138,7 @@ CUSTOM_CSS = """
 }
 
 .right-stack > * {
-  margin-bottom: 10px;
+  margin-bottom: 8px;
 }
 
 .icon-grid {
@@ -149,19 +152,47 @@ CUSTOM_CSS = """
   align-items: center;
   justify-content: center;
   gap: 6px;
-  padding: 8px 10px;
-  border: 1px solid #e5e7eb;
+  padding: 7px 8px;
+  border: 1px solid #f1f5f9;
   border-radius: 10px;
   text-decoration: none !important;
-  color: #1f2937 !important;
+  color: #334155 !important;
   background: #ffffff;
   font-weight: 600;
-  font-size: 13px;
+  font-size: 12px;
 }
 
 .icon-link:hover {
   background: #f8fafc;
-  border-color: #cbd5e1;
+  border-color: #e2e8f0;
+}
+
+.gradio-container .gr-group,
+.gradio-container .gr-box,
+.gradio-container .gr-panel {
+  border: none !important;
+  box-shadow: none !important;
+  background: transparent !important;
+}
+
+.gradio-container .tabs {
+  border: none !important;
+  background: transparent !important;
+}
+
+.gradio-container .tabitem {
+  border: none !important;
+  background: transparent !important;
+}
+
+.gradio-container .gr-form,
+.gradio-container .form {
+  background: #ffffff !important;
+}
+
+.gradio-container textarea,
+.gradio-container input {
+  background: #ffffff !important;
 }
 """
 
@@ -452,7 +483,7 @@ def run_ui(
 
 with gr.Blocks(
     title="DeepResearch Space Starter",
-    theme=gr.themes.Soft(
+    theme=gr.themes.Default(
         text_size="md",
         radius_size="md",
         spacing_size="md",