Update assets/custom.css via AI Editor

assets/custom.css

@@ -1 +1,41 @@
--
+/* Left column navbar (light gray) */
+#left-navbar {
+    background-color: #f8f9fa !important;
+}
+
+/* Right column main (white background) */
+#right-main {
+    background-color: #fff !important;
+}
+
+/* Primary button */
+.btn-primary {
+    background-color: #1C304A;
+    border-color: #1C304A;
+}
+.btn-primary:hover {
+    background-color: #116F70;
+    border-color: #116F70;
+}
+
+/* Secondary button */
+.btn-secondary {
+    background-color: #116F70;
+    border-color: #116F70;
+}
+.btn-secondary:hover {
+    background-color: #00AEAF;
+    border-color: #00AEAF;
+}
+
+/* Tertiary button */
+.btn-tertiary {
+    background-color: #E0E0E0;
+    border-color: #E0E0E0;
+    color: #1C304A;
+}
+.btn-tertiary:hover {
+    background-color: #DEF4F4;
+    border-color: #DEF4F4;
+    color: #1C304A;
+}