Redesign header banners for consistency - unified typography, color scheme, and spacing

Co-authored-by: Boshen <[email protected]>

Author: Copilot

apps/dashboard/src/App.css

@@ -5,11 +5,13 @@
   color: #000000;
 }
 
-/* Dashboard Banner - Small and Clean */
+/* Header Banner System - Consistent Design Language */
+
+/* Level 1: Dashboard Banner - Top-level app identifier */
 .dashboard-banner {
-  background: #f8fafc;
-  border-bottom: 1px solid #e2e8f0;
-  padding: 0.5rem 2rem;
+  background: #f1f5f9;
+  border-bottom: 1px solid #cbd5e1;
+  padding: 0.75rem 2rem;
   position: sticky;
   top: 0;
   z-index: 50;
@@ -20,28 +22,29 @@
   margin: 0 auto;
   display: flex;
   align-items: center;
-  gap: 0.5rem;
+  gap: 0.625rem;
   font-size: 0.875rem;
   font-weight: 600;
-  color: #64748b;
+  color: #475569;
+  letter-spacing: -0.025em;
 }
 
+/* Level 2: Page Header - Main page identification */
 .dashboard-header {
-  background: #1e293b;
-  border-bottom: 1px solid #e2e8f0;
+  background: #334155;
+  border-bottom: 1px solid #475569;
   color: white;
-  padding: 1.5rem 2rem;
+  padding: 1.25rem 2rem;
   box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
 }
 
-
-
 .header-content {
   max-width: 1200px;
   margin: 0 auto;
   display: flex;
   align-items: center;
-  justify-content: space-between;
+  justify-content: flex-start;
+  gap: 1.5rem;
 }
 
 .logo {
@@ -52,188 +55,121 @@
 
 .logo h1 {
   margin: 0;
-  font-size: 1.75rem;
-  font-weight: 700;
+  font-size: 1.5rem;
+  font-weight: 600;
   color: white;
   letter-spacing: -0.025em;
 }
 
 .header-subtitle {
   margin: 0;
-  opacity: 0.9;
-  font-size: 1rem;
+  font-size: 0.875rem;
   font-weight: 400;
   color: #cbd5e1;
-  display: block;
   letter-spacing: 0.025em;
 }
 
 @media (min-width: 768px) {
-  .header-subtitle {
-    display: block;
-  }
-
   .header-content {
-    justify-content: flex-start;
     gap: 2rem;
   }
 
   .logo h1 {
-    font-size: 1.75rem;
+    font-size: 1.5rem;
   }
 }
 
-/* Page Navigation */
+/* Level 3: Page Navigation - Inter-page navigation */
 .page-nav {
-  background: transparent;
+  background: #f8fafc;
+  border-bottom: 1px solid #e2e8f0;
   padding: 1rem 2rem;
   display: flex;
   gap: 0.5rem;
   max-width: 1200px;
   margin: 0 auto;
-  border-radius: 0.75rem;
-  margin-top: -0.5rem;
-  position: relative;
-  z-index: 10;
 }
 
 .page-button {
   display: flex;
   align-items: center;
-  gap: 0.625rem;
-  padding: 0.875rem 1.5rem;
-  border: 2px solid #e2e8f0;
+  gap: 0.5rem;
+  padding: 0.75rem 1.25rem;
+  border: 1px solid #cbd5e1;
   background: #ffffff;
-  border-radius: 0.75rem;
+  border-radius: 0.5rem;
   cursor: pointer;
-  font-weight: 600;
-  font-size: 1rem;
+  font-weight: 500;
+  font-size: 0.875rem;
   transition: all 0.2s ease;
   color: #475569;
-  text-transform: capitalize;
   letter-spacing: -0.025em;
-  position: relative;
-  overflow: hidden;
-  min-width: 160px;
-  justify-content: center;
   text-decoration: none;
-}
-
-.page-button::before {
-  content: '';
-  position: absolute;
-  top: 0;
-  left: -100%;
-  width: 100%;
-  height: 100%;
-  background: rgba(59, 130, 246, 0.1);
-  transition: left 0.3s ease;
+  min-width: 140px;
+  justify-content: center;
 }
 
 .page-button:hover {
-  background: rgba(59, 130, 246, 0.05);
-  border-color: #3b82f6;
-  color: #1d4ed8;
-  transform: translateY(-1px);
-  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
-}
-
-.page-button:hover::before {
-  left: 100%;
+  background: #f1f5f9;
+  border-color: #94a3b8;
+  color: #334155;
 }
 
 .page-button.active {
-  background: #3b82f6;
-  border-color: #3b82f6;
+  background: #475569;
+  border-color: #475569;
   color: #ffffff;
-  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
-  transform: translateY(-1px);
-}
-
-.page-button.active::before {
-  background: rgba(255, 255, 255, 0.1);
 }
 
 .page-button.active:hover {
-  background: #2563eb;
-  transform: translateY(-2px);
-  box-shadow: 0 6px 16px rgba(59, 130, 246, 0.4);
+  background: #334155;
+  border-color: #334155;
 }
 
-/* Metric Navigation */
+/* Level 4: Metric Navigation - Metric selection within pages */
 .dashboard-nav {
-  background: transparent;
-  padding: 1.25rem 2rem;
+  background: #f8fafc;
+  border-bottom: 1px solid #e2e8f0;
+  padding: 1rem 2rem;
   display: flex;
   gap: 0.5rem;
   max-width: 1200px;
   margin: 0 auto;
-  border-radius: 0.75rem;
-  margin-top: -0.5rem;
-  position: relative;
-  z-index: 10;
 }
 
 .nav-button {
   display: flex;
   align-items: center;
-  gap: 0.625rem;
-  padding: 0.875rem 1.5rem;
-  border: 2px solid #e2e8f0;
+  gap: 0.5rem;
+  padding: 0.75rem 1.25rem;
+  border: 1px solid #cbd5e1;
   background: #ffffff;
-  border-radius: 0.75rem;
+  border-radius: 0.5rem;
   cursor: pointer;
-  font-weight: 600;
-  font-size: 1rem;
+  font-weight: 500;
+  font-size: 0.875rem;
   transition: all 0.2s ease;
   color: #475569;
-  text-transform: capitalize;
   letter-spacing: -0.025em;
-  position: relative;
-  overflow: hidden;
-  min-width: 140px;
+  min-width: 120px;
   justify-content: center;
 }
 
-.nav-button::before {
-  content: '';
-  position: absolute;
-  top: 0;
-  left: -100%;
-  width: 100%;
-  height: 100%;
-  background: rgba(59, 130, 246, 0.1);
-  transition: left 0.3s ease;
-}
-
 .nav-button:hover {
-  background: rgba(59, 130, 246, 0.05);
-  border-color: #3b82f6;
-  color: #1d4ed8;
-  transform: translateY(-1px);
-  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.15);
-}
-
-.nav-button:hover::before {
-  left: 100%;
+  background: #f1f5f9;
+  border-color: #94a3b8;
+  color: #334155;
 }
 
 .nav-button.active {
-  background: #3b82f6;
-  border-color: #3b82f6;
+  background: #475569;
+  border-color: #475569;
   color: #ffffff;
-  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
-  transform: translateY(-1px);
-}
-
-.nav-button.active::before {
-  background: rgba(255, 255, 255, 0.1);
 }
 
 .nav-button.active:hover {
-  background: #2563eb;
-  transform: translateY(-2px);
-  box-shadow: 0 6px 16px rgba(59, 130, 246, 0.4);
+  background: #334155;
+  border-color: #334155;
 }
 
 /* Main Content */