Redesign: Modern navbar with gradient and glass morphism

client/src/App.css

@@ -5,31 +5,54 @@
 }
 
 .navbar {
-  background: var(--bg);
-  box-shadow: var(--shadow);
+  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
+  border-bottom: 1px solid var(--border);
+  backdrop-filter: blur(10px);
   position: sticky;
   top: 0;
   z-index: 100;
+  box-shadow: var(--shadow);
 }
 
 .navbar .container {
   display: flex;
   align-items: center;
   justify-content: space-between;
-  padding: 1rem;
+  padding: 1rem 1.5rem;
 }
 
 .nav-brand {
   display: flex;
   align-items: center;
   gap: 0.75rem;
-  color: var(--primary);
+  color: var(--text-primary);
   font-weight: 700;
   font-size: 1.5rem;
+  text-decoration: none;
+  transition: var(--transition);
+}
+
+.nav-brand:hover {
+  color: var(--primary-light);
+}
+
+.brand-icon {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 2.5rem;
+  height: 2.5rem;
+  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
+  border-radius: var(--radius);
+  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
 }
 
 .brand-text {
-  letter-spacing: 0.05em;
+  letter-spacing: -0.025em;
+  background: linear-gradient(135deg, var(--primary-light) 0%, var(--accent) 100%);
+  -webkit-background-clip: text;
+  -webkit-text-fill-color: transparent;
+  background-clip: text;
 }
 
 .nav-links {
@@ -42,29 +65,45 @@
   align-items: center;
   gap: 0.5rem;
   padding: 0.625rem 1rem;
-  border-radius: 0.375rem;
+  border-radius: var(--radius-sm);
   color: var(--text-secondary);
   text-decoration: none;
   font-weight: 500;
-  transition: all 0.2s;
+  font-size: 0.875rem;
+  transition: var(--transition);
+  border: 1px solid transparent;
 }
 
 .nav-link:hover {
-  background: var(--bg-secondary);
-  color: var(--primary);
+  background: var(--bg-tertiary);
+  color: var(--text-primary);
+  border-color: var(--border);
 }
 
 .nav-link.active {
   background: var(--primary);
   color: white;
+  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
 }
 
 .main-content {
   flex: 1;
-  padding: 2rem 0;
 }
 
 @media (max-width: 768px) {
+  .navbar .container {
+    padding: 0.875rem 1rem;
+  }
+  
+  .nav-brand {
+    font-size: 1.25rem;
+  }
+  
+  .brand-icon {
+    width: 2rem;
+    height: 2rem;
+  }
+  
   .nav-links {
     gap: 0.25rem;
   }