diff --git a/src/components/FloatingContributors/FloatingContributors.css b/src/components/FloatingContributors/FloatingContributors.css
index 92c044ad..755b56bb 100644
--- a/src/components/FloatingContributors/FloatingContributors.css
+++ b/src/components/FloatingContributors/FloatingContributors.css
@@ -83,6 +83,22 @@
   cursor: pointer; /* Add pointer cursor to indicate clickable */
 }
 
+[data-theme='dark'] .contributor-activity-item {
+  background-color: rgba(71, 85, 105, 0.3);
+}
+
+[data-theme='dark'] .contributor-activity-item:hover {
+  background-color: rgba(71, 85, 105, 0.5);
+}
+
+[data-theme='light'] .contributor-activity-item {
+  background-color: rgba(241, 245, 249, 0.6);
+}
+
+[data-theme='light'] .contributor-activity-item:hover {
+  background-color: rgba(226, 232, 240, 0.8);
+}
+
 .contributor-activity-item:hover {
   background-color: rgba(255, 255, 255, 0.15);
   transform: translateY(-2px); /* Slight lift effect on hover */
@@ -131,6 +147,14 @@
   color: rgba(255, 255, 255, 0.95);
 }
 
+[data-theme='dark'] .activity-item-username {
+  color: #f1f5f9;
+}
+
+[data-theme='light'] .activity-item-username {
+  color: #1e293b;
+}
+
 .activity-item-badge {
   background-color: rgba(59, 130, 246, 0.2);
   padding: 2px 6px;
@@ -139,12 +163,30 @@
   color: rgba(255, 255, 255, 0.9);
 }
 
+[data-theme='dark'] .activity-item-badge {
+  background-color: rgba(139, 92, 246, 0.2);
+  color: #c084fc;
+}
+
+[data-theme='light'] .activity-item-badge {
+  background-color: rgba(59, 130, 246, 0.15);
+  color: #3b82f6;
+}
+
 .activity-item-action {
   font-size: 0.8rem;
   color: rgba(255, 255, 255, 0.7);
   margin-top: 2px;
 }
 
+[data-theme='dark'] .activity-item-action {
+  color: rgba(203, 213, 225, 0.8);
+}
+
+[data-theme='light'] .activity-item-action {
+  color: rgba(71, 85, 105, 0.8);
+}
+
 .activities-more {
   text-align: center;
   padding: 8px;
@@ -155,6 +197,16 @@
   margin-top: 4px;
 }
 
+[data-theme='dark'] .activities-more {
+  color: rgba(203, 213, 225, 0.8);
+  background-color: rgba(71, 85, 105, 0.2);
+}
+
+[data-theme='light'] .activities-more {
+  color: rgba(71, 85, 105, 0.8);
+  background-color: rgba(241, 245, 249, 0.5);
+}
+
 /* Header embedded version - larger size */
 .floating-contributors-container.header-embedded .floating-contributors-card {
   min-width: 450px;
@@ -199,6 +251,71 @@
   transition: background 0.3s ease, box-shadow 0.3s ease;
 }
 
+/* Dark mode text color overrides */
+[data-theme='dark'] .floating-contributors-title {
+  color: #f1f5f9;
+}
+
+[data-theme='dark'] .floating-contributors-subtitle {
+  color: rgba(203, 213, 225, 0.8);
+}
+
+[data-theme='dark'] .floating-contributors-close {
+  color: rgba(203, 213, 225, 0.7);
+  background: rgba(71, 85, 105, 0.3);
+}
+
+[data-theme='dark'] .activity-username {
+  color: #f1f5f9;
+}
+
+[data-theme='dark'] .activity-message {
+  color: rgba(203, 213, 225, 0.8);
+}
+
+[data-theme='dark'] .activity-time {
+  color: rgba(148, 163, 184, 0.7);
+}
+
+[data-theme='dark'] .contributors-grid-header {
+  color: #f1f5f9;
+  background: rgba(71, 85, 105, 0.4);
+}
+
+[data-theme='dark'] .floating-contributors-activity {
+  background: rgba(71, 85, 105, 0.3);
+}
+
+[data-theme='dark'] .floating-contributors-activity:hover {
+  background: rgba(71, 85, 105, 0.5);
+}
+
+[data-theme='dark'] .contributors-avatars {
+  background: rgba(71, 85, 105, 0.2);
+}
+
+[data-theme='dark'] .activity-action-badge {
+  background: rgba(139, 92, 246, 0.2);
+  color: #c084fc;
+}
+
+[data-theme='dark'] .contributors-count {
+  background: rgba(139, 92, 246, 0.2);
+  color: #c084fc;
+}
+
+[data-theme='dark'] .contributors-more {
+  background: rgba(71, 85, 105, 0.3);
+  border-color: rgba(148, 163, 184, 0.3);
+  color: rgba(203, 213, 225, 0.8);
+}
+
+[data-theme='dark'] .contributors-more:hover {
+  background: rgba(139, 92, 246, 0.3);
+  border-color: rgba(139, 92, 246, 0.5);
+  color: #f1f5f9;
+}
+
 .floating-contributors-card::before {
   content: '';
   position: absolute;