Update src/streamlit_app.py

src/streamlit_app.py

@@ -17,11 +17,11 @@ st.markdown("""
     }
     
     .stApp {
-        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+        background: white;
     }
     
     .main-header {
-        background: linear-gradient(90deg, #4facfe, #00f2fe);
+        background: black;
         padding: 2rem;
         border-radius: 15px;
         text-align: center;
@@ -49,7 +49,7 @@ st.markdown("""
         border-radius: 15px;
         margin: 1rem 0;
         box-shadow: 0 4px 20px rgba(0,0,0,0.1);
-        border-left: 5px solid #4facfe;
+        border-left: 5px solid black;
         transition: transform 0.3s ease;
     }
     
@@ -63,15 +63,15 @@ st.markdown("""
         padding: 1rem;
         border-radius: 10px;
         margin: 0.5rem 0;
-        border-left: 3px solid #28a745;
+        border-left: 3px solid black;
     }
     
     .topic-item {
-        background: #e3f2fd;
+        background: #f8f9fa;
         padding: 0.5rem;
         margin: 0.3rem 0;
         border-radius: 8px;
-        border-left: 2px solid #2196f3;
+        border-left: 2px solid black;
     }
     
     .sidebar .sidebar-content {
@@ -81,7 +81,7 @@ st.markdown("""
     }
     
     .metric-card {
-        background: linear-gradient(135deg, #667eea, #764ba2);
+        background: black;
         color: white;
         padding: 1rem;
         border-radius: 10px;