diff --git a/frontend/src/components/uml/UMLVisualization.css b/frontend/src/components/uml/UMLVisualization.css
index 8245480e30..5e3c6f9d36 100644
--- a/frontend/src/components/uml/UMLVisualization.css
+++ b/frontend/src/components/uml/UMLVisualization.css
@@ -14,22 +14,30 @@
   display: flex;
   justify-content: space-between;
   align-items: center;
-  padding: 1rem 1.5rem;
+  padding: 0.5rem 0.75rem;
   background: white;
   border-bottom: 1px solid var(--border-color, #e0e0e0);
+  gap: 0.375rem;
+  min-height: 40px;
 }
 
 .uml-visualization__title {
   margin: 0;
-  font-size: 1.25rem;
+  font-size: 0.875rem;
   color: #172a59;
   font-weight: 600;
+  flex-shrink: 1;
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
 }
 
 .uml-visualization__controls {
   display: flex;
-  gap: 1rem;
+  gap: 0.25rem;
   align-items: center;
+  flex-shrink: 0;
 }
 
 /* Search bar styles */
@@ -38,11 +46,11 @@
 }
 
 .uml-visualization__search-input {
-  padding: 0.5rem 1rem;
+  padding: 0.25rem 0.5rem;
   border: 1px solid #e0e0e0;
-  border-radius: 4px;
-  font-size: 0.875rem;
-  width: 200px;
+  border-radius: 3px;
+  font-size: 0.75rem;
+  width: 100px;
   transition: all 0.2s;
 }
 
@@ -109,21 +117,23 @@
 }
 
 .uml-visualization__zoom {
-  font-size: 0.875rem;
+  font-size: 0.6875rem;
   color: #666;
   font-weight: 500;
+  white-space: nowrap;
 }
 
 .uml-visualization__button {
-  padding: 0.5rem 1rem;
+  padding: 0.25rem 0.5rem;
   background: #0a3dfa;
   color: white;
   border: none;
-  border-radius: 4px;
-  font-size: 0.875rem;
+  border-radius: 3px;
+  font-size: 0.6875rem;
   font-weight: 500;
   cursor: pointer;
   transition: all 0.2s;
+  white-space: nowrap;
 }
 
 .uml-visualization__button:hover {
@@ -140,13 +150,13 @@
 .uml-visualization__toggle {
   display: flex;
   align-items: center;
-  gap: 0.375rem;
-  padding: 0.5rem 0.75rem;
+  gap: 0.125rem;
+  padding: 0.25rem 0.375rem;
   background: #f3f4f6;
   color: #6b7280;
   border: 1px solid #e5e7eb;
-  border-radius: 4px;
-  font-size: 0.75rem;
+  border-radius: 3px;
+  font-size: 0.625rem;
   font-weight: 500;
   cursor: pointer;
   transition: all 0.2s;
@@ -168,14 +178,14 @@
 }
 
 .uml-visualization__toggle-icon {
-  font-size: 0.875rem;
+  font-size: 0.75rem;
 }
 
 .uml-visualization__toggle-label {
   display: none;
 }
 
-@media (min-width: 640px) {
+@media (min-width: 900px) {
   .uml-visualization__toggle-label {
     display: inline;
   }