Add custom overlay feature with configuration options for text and image

Jellyfin.Plugin.MediaBarEnhanced/Web/mediaBarEnhanced.css

@@ -1031,3 +1031,75 @@
     -webkit-backdrop-filter: none;
   }
 }
+/* Floating Custom Overlay Styling */
+.custom-overlay-container {
+  position: absolute;
+  top: 8vh;
+  left: 4vw;
+  z-index: 15;
+  display: flex;
+  align-items: center;
+  justify-content: flex-start;
+  pointer-events: none; /* Let clicks pass through to the slider */
+  animation: fadeInOverlay 1.5s ease-in-out forwards;
+}
+
+.custom-overlay-text {
+  font-family: "Archivo Narrow", sans-serif;
+  color: #fff;
+  font-size: 2.5rem;
+  font-weight: 700;
+  text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.8), -1px -1px 4px rgba(0, 0, 0, 0.5);
+  margin: 0;
+  letter-spacing: 1px;
+}
+
+.custom-overlay-image {
+  max-width: 300px;
+  max-height: 120px;
+  object-fit: contain;
+  filter: drop-shadow(2px 4px 6px rgba(0,0,0,0.5));
+}
+
+@keyframes fadeInOverlay {
+  from {
+    opacity: 0;
+    transform: translateY(-10px);
+  }
+  to {
+    opacity: 1;
+    transform: translateY(0);
+  }
+}
+
+/* Make it smaller on mobile portrait */
+@media only screen and (max-width: 767px) and (orientation: portrait) {
+  .custom-overlay-container {
+    top: 5vh;
+    left: 50%;
+    transform: translateX(-50%);
+    width: 90%;
+    justify-content: center;
+    text-align: center;
+  }
+  
+  .custom-overlay-text {
+    font-size: 1.8rem;
+  }
+  
+  .custom-overlay-image {
+    max-width: 200px;
+    max-height: 80px;
+  }
+
+  @keyframes fadeInOverlay {
+    from {
+      opacity: 0;
+      transform: translate(-50%, -10px);
+    }
+    to {
+      opacity: 1;
+      transform: translate(-50%, 0);
+    }
+  }
+}