diff --git a/bridge-settings/react-app/src/styles/index.css b/bridge-settings/react-app/src/styles/index.css
index 68e084c..9d795a1 100644
--- a/bridge-settings/react-app/src/styles/index.css
+++ b/bridge-settings/react-app/src/styles/index.css
@@ -6,8 +6,8 @@
 
 body {
   font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
-  background-color: #f5f5f5;
-  color: #333;
+  background-color: #1a1a1a;
+  color: #e0e0e0;
   line-height: 1.6;
 }
 
@@ -22,15 +22,15 @@ body {
 }
 
 .header {
-  background: white;
+  background: #2d2d2d;
   border-radius: 8px;
   padding: 20px;
   margin-bottom: 20px;
-  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
+  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
 }
 
 .header h1 {
-  color: #2c3e50;
+  color: #d0d0d0;
   margin-bottom: 10px;
 }
 
@@ -72,17 +72,17 @@ body {
 }
 
 .settings-section {
-  background: white;
+  background: #2d2d2d;
   border-radius: 8px;
   padding: 20px;
-  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
+  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
 }
 
 .settings-section h2 {
-  color: #2c3e50;
+  color: #d0d0d0;
   margin-bottom: 16px;
   font-size: 1.25rem;
-  border-bottom: 2px solid #ecf0f1;
+  border-bottom: 2px solid #404040;
   padding-bottom: 8px;
 }
 
@@ -91,7 +91,7 @@ body {
   justify-content: space-between;
   align-items: center;
   padding: 12px 0;
-  border-bottom: 1px solid #ecf0f1;
+  border-bottom: 1px solid #404040;
 }
 
 .setting-item:last-child {
@@ -100,7 +100,7 @@ body {
 
 .setting-label {
   font-weight: 500;
-  color: #2c3e50;
+  color: #e0e0e0;
 }
 
 .setting-control {
@@ -113,7 +113,7 @@ body {
   position: relative;
   width: 50px;
   height: 24px;
-  background-color: #bdc3c7;
+  background-color: #555555;
   border-radius: 12px;
   cursor: pointer;
   transition: background-color 0.3s;
@@ -147,7 +147,7 @@ input[type="range"] {
   width: 100%;
   height: 6px;
   border-radius: 3px;
-  background: #ecf0f1;
+  background: #555555;
   outline: none;
   -webkit-appearance: none;
 }
@@ -172,17 +172,18 @@ input[type="range"]::-moz-range-thumb {
 }
 
 .status-display {
-  background: #ecf0f1;
+  background: #404040;
   border-radius: 6px;
   padding: 8px 12px;
   font-family: monospace;
   font-size: 14px;
   min-width: 60px;
   text-align: center;
+  color: #e0e0e0;
 }
 
 .system-status {
-  background: #f8f9fa;
+  background: #262626;
   border-left: 4px solid #3498db;
   padding: 16px;
   border-radius: 0 8px 8px 0;
@@ -190,7 +191,7 @@ input[type="range"]::-moz-range-thumb {
 }
 
 .system-status h3 {
-  color: #2c3e50;
+  color: #d0d0d0;
   margin-bottom: 12px;
   font-size: 1rem;
 }
@@ -209,12 +210,12 @@ input[type="range"]::-moz-range-thumb {
 }
 
 .status-item .label {
-  color: #7f8c8d;
+  color: #b0b0b0;
 }
 
 .status-item .value {
   font-weight: 500;
-  color: #2c3e50;
+  color: #e0e0e0;
 }
 
 .loading {
@@ -222,7 +223,7 @@ input[type="range"]::-moz-range-thumb {
   justify-content: center;
   align-items: center;
   min-height: 200px;
-  color: #7f8c8d;
+  color: #b0b0b0;
 }
 
 .error {
@@ -235,7 +236,7 @@ input[type="range"]::-moz-range-thumb {
 
 /* MABL Status Styles */
 .mabl-status {
-  background: #f8f9fa;
+  background: #262626;
   border-left: 4px solid #9b59b6;
   padding: 16px;
   border-radius: 0 8px 8px 0;
@@ -243,7 +244,7 @@ input[type="range"]::-moz-range-thumb {
 }
 
 .mabl-status h3 {
-  color: #2c3e50;
+  color: #d0d0d0;
   margin-bottom: 12px;
   font-size: 1rem;
 }
@@ -253,7 +254,7 @@ input[type="range"]::-moz-range-thumb {
 }
 
 .mabl-events h3 {
-  color: #2c3e50;
+  color: #d0d0d0;
   margin-bottom: 12px;
   font-size: 1rem;
 }
@@ -318,12 +319,12 @@ input[type="range"]::-moz-range-thumb {
 
 /* eSIM Settings Styles */
 .esim-description {
-  background: #f8f9fa;
+  background: #262626;
   padding: 12px;
   border-radius: 6px;
   margin-bottom: 20px;
   font-size: 14px;
-  color: #5d6d7e;
+  color: #b0b0b0;
 }
 
 .action-group {
@@ -331,7 +332,7 @@ input[type="range"]::-moz-range-thumb {
 }
 
 .action-group h3 {
-  color: #2c3e50;
+  color: #ffffff;
   margin-bottom: 16px;
   font-size: 1.1rem;
   border-bottom: 2px solid #3498db;
@@ -346,20 +347,20 @@ input[type="range"]::-moz-range-thumb {
 
 /* Action Button Styles */
 .action-button-container {
-  background: white;
+  background: #2d2d2d;
   border-radius: 8px;
-  border: 1px solid #e1e8ed;
+  border: 1px solid #404040;
   overflow: hidden;
   transition: box-shadow 0.2s ease;
 }
 
 .action-button-container:hover {
-  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
+  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
 }
 
 .action-header {
   padding: 16px;
-  border-bottom: 1px solid #f0f3f5;
+  border-bottom: 1px solid #404040;
 }
 
 .action-button {
@@ -391,7 +392,7 @@ input[type="range"]::-moz-range-thumb {
 .action-description {
   display: block;
   font-size: 12px;
-  color: #7f8c8d;
+  color: #b0b0b0;
   margin-top: 8px;
   font-style: italic;
 }
@@ -399,13 +400,13 @@ input[type="range"]::-moz-range-thumb {
 /* Parameter Form Styles */
 .parameter-form {
   padding: 16px;
-  background: #f8f9fa;
-  border-top: 1px solid #e1e8ed;
+  background: #333333;
+  border-top: 1px solid #404040;
 }
 
 .parameter-form h4 {
   margin-bottom: 12px;
-  color: #2c3e50;
+  color: #ffffff;
   font-size: 14px;
 }
 
@@ -417,7 +418,7 @@ input[type="range"]::-moz-range-thumb {
 
 .parameter-label {
   font-size: 14px;
-  color: #2c3e50;
+  color: #e0e0e0;
   margin-bottom: 4px;
   font-weight: 500;
 }
@@ -429,20 +430,22 @@ input[type="range"]::-moz-range-thumb {
 
 .parameter-input input {
   padding: 8px 12px;
-  border: 1px solid #ddd;
+  border: 1px solid #555555;
   border-radius: 4px;
   font-size: 14px;
+  background: #404040;
+  color: #e0e0e0;
 }
 
 .parameter-input input:focus {
   outline: none;
   border-color: #3498db;
-  box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
+  box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.3);
 }
 
 .parameter-description {
   font-size: 12px;
-  color: #7f8c8d;
+  color: #b0b0b0;
   margin-top: 4px;
   font-style: italic;
 }
@@ -477,18 +480,18 @@ input[type="range"]::-moz-range-thumb {
 }
 
 .cancel-params {
-  background: #ecf0f1;
-  color: #2c3e50;
+  background: #555555;
+  color: #e0e0e0;
 }
 
 .cancel-params:hover {
-  background: #d5dbdb;
+  background: #666666;
 }
 
 /* Action Result Styles */
 .action-result {
   padding: 16px;
-  border-top: 1px solid #e1e8ed;
+  border-top: 1px solid #404040;
   margin-top: 16px;
 }
 
@@ -525,7 +528,7 @@ input[type="range"]::-moz-range-thumb {
 .result-message {
   flex: 1;
   font-size: 14px;
-  color: #2c3e50;
+  color: #e0e0e0;
 }
 
 .result-data {
@@ -534,19 +537,20 @@ input[type="range"]::-moz-range-thumb {
 
 .result-data h4 {
   margin-bottom: 8px;
-  color: #2c3e50;
+  color: #ffffff;
   font-size: 14px;
 }
 
 .result-data pre {
-  background: #f8f9fa;
-  border: 1px solid #e1e8ed;
+  background: #1a1a1a;
+  border: 1px solid #404040;
   border-radius: 4px;
   padding: 12px;
   font-size: 12px;
   overflow-x: auto;
   max-height: 200px;
   overflow-y: auto;
+  color: #e0e0e0;
 }
 
 /* Action Logs Styles */
@@ -556,7 +560,7 @@ input[type="range"]::-moz-range-thumb {
 
 .action-logs h4 {
   margin-bottom: 8px;
-  color: #2c3e50;
+  color: #ffffff;
   font-size: 14px;
 }
 
@@ -621,13 +625,13 @@ input[type="range"]::-moz-range-thumb {
 .esim-help {
   margin-top: 24px;
   padding: 16px;
-  background: #f0f9ff;
+  background: #262626;
   border-left: 4px solid #3498db;
   border-radius: 0 6px 6px 0;
 }
 
 .esim-help h4 {
-  color: #2c3e50;
+  color: #ffffff;
   margin-bottom: 12px;
   font-size: 1rem;
 }
@@ -639,10 +643,10 @@ input[type="range"]::-moz-range-thumb {
 .esim-help li {
   margin-bottom: 8px;
   font-size: 14px;
-  color: #34495e;
+  color: #c0c0c0;
   line-height: 1.5;
 }
 
 .esim-help strong {
-  color: #2c3e50;
+  color: #ffffff;
 }
\ No newline at end of file