diff --git a/assets/css/styles.css b/assets/css/styles.css
index 0a20bb6..da5ead0 100644
--- a/assets/css/styles.css
+++ b/assets/css/styles.css
@@ -460,15 +460,17 @@ body {
 }
 
 .btn-primary {
-    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
+    background: linear-gradient(135deg, var(--brand, #1565c0), var(--brand-dark, #0d47a1));
     color: white;
+    border-color: transparent;
 }
 
 .btn-primary:hover {
-    background: linear-gradient(135deg, var(--secondary-color), var(--tertiary-color));
+    background: linear-gradient(135deg, var(--brand-dark, #0d47a1), var(--brand, #1565c0));
     color: white;
+    border-color: transparent;
     transform: translateY(-2px);
-    box-shadow: 0 5px 15px rgba(37, 211, 102, 0.4);
+    box-shadow: 0 5px 15px color-mix(in srgb, var(--brand, #1565c0) 40%, transparent);
 }
 
 .btn-success {
@@ -497,8 +499,8 @@ body {
 }
 
 .form-control:focus {
-    border-color: var(--primary-color);
-    box-shadow: 0 0 0 0.2rem rgba(37, 211, 102, 0.25);
+    border-color: var(--brand, var(--primary-color));
+    box-shadow: 0 0 0 0.2rem color-mix(in srgb, var(--brand, #1565c0) 22%, transparent);
     outline: none;
 }
 
@@ -550,7 +552,7 @@ body {
 }
 
 .table-hover tbody tr:hover {
-    background-color: rgba(37, 211, 102, 0.05);
+    background-color: color-mix(in srgb, var(--brand, #1565c0) 6%, transparent);
 }
 
 /* Badges */
@@ -676,12 +678,12 @@ body {
 }
 
 .menu-item:hover {
-    border-color: var(--primary-color);
-    background: rgba(37, 211, 102, 0.05);
+    border-color: var(--brand, var(--primary-color));
+    background: color-mix(in srgb, var(--brand, #1565c0) 5%, transparent);
 }
 
 .menu-item.root {
-    border-left: 4px solid var(--primary-color);
+    border-left: 4px solid var(--brand, var(--primary-color));
 }
 
 .menu-item.child {
@@ -694,8 +696,8 @@ body {
     padding: 10px 15px;
     border-radius: 8px;
     margin-bottom: 10px;
-    border-left: 4px solid var(--primary-color);
-    background: rgba(37, 211, 102, 0.05);
+    border-left: 4px solid var(--brand, var(--primary-color));
+    background: color-mix(in srgb, var(--brand, #1565c0) 5%, transparent);
 }
 
 .recent-message .time {