fix(ui): prevent text selection on buttons

src/style.css

@@ -84,16 +84,27 @@ body {
   margin: 0;
   display: flex;
   min-width: 320px;
-  height: 100vh;
-  overflow: hidden; /* Prevent body scroll */
+  min-height: 100vh;
+  overflow-x: hidden;
 }
 
 #app {
   width: 100%;
-  height: 100vh;
+  min-height: 100vh;
   display: flex;
   flex-direction: column;
-  overflow: hidden; /* Prevent app scroll */
+}
+
+@media (min-width: 768px) {
+  body {
+    height: 100vh;
+    overflow: hidden;
+  }
+
+  #app {
+    height: 100vh;
+    overflow: hidden;
+  }
 }
 
 /* Common UI Element Styles */
@@ -122,6 +133,12 @@ body {
   outline: none; /* Remove focus outline */
 }
 
+/* Global button styles */
+button {
+  user-select: none;
+  -webkit-user-select: none;
+}
+
 /* Remove focus outline for all buttons */
 button:focus {
   outline: none;