diff --git a/Week-3/Task-1/r3f/src/App.css b/Week-3/Task-1/r3f/src/App.css
index d87f28f..90498be 100644
--- a/Week-3/Task-1/r3f/src/App.css
+++ b/Week-3/Task-1/r3f/src/App.css
@@ -4,6 +4,7 @@
   position: relative;
   background-color: white;
   overflow: hidden;
+  font-family: 'Inter', system-ui, -apple-system, sans-serif;
 }
 
 #controls {
@@ -12,27 +13,36 @@
   left: 20px;
   z-index: 10;
   display: flex;
-  gap: 10px;
+  gap: 12px;
+  background: rgba(255, 255, 255, 0.8);
+  backdrop-filter: blur(10px);
+  padding: 16px;
+  border-radius: 12px;
+  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
+  border: 1px solid rgba(0, 0, 0, 0.05);
 }
 
 button {
-  padding: 8px 16px;
+  padding: 10px 18px;
+  border: none;
+  border-radius: 8px;
+  background: white;
+  color: #333;
   cursor: pointer;
-  background: #f0f0f0;
-  border: 1px solid #ccc;
-  border-radius: 4px;
   font-weight: 500;
-  transition: all 0.2s;
+  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
+  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
 }
 
 button:hover {
-  background: #e0e0e0;
+  transform: translateY(-2px);
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
 }
 
 button.active {
   background: #333;
   color: white;
-  border-color: #333;
+  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
 }
 
 .canvas-wrapper {
diff --git a/Week-3/Task-1/r3f/src/App.jsx b/Week-3/Task-1/r3f/src/App.jsx
index 557d2f4..e42b48c 100644
--- a/Week-3/Task-1/r3f/src/App.jsx
+++ b/Week-3/Task-1/r3f/src/App.jsx
@@ -7,6 +7,7 @@ const materials = {
   black: { color: "black", roughness: 1, metalness: 0 },
   silver: { color: "#C0C0C0", roughness: 0.3, metalness: 1 },
   gold: { color: "#FFD700", roughness: 0.4, metalness: 1 },
+  emerald: { color: "#009B77", roughness: 0.4, metalness: 1 },
 };
 
 function Scene({ variant }) {