change selected post highlight when forking topic

less/topic.less

@@ -434,4 +434,37 @@
 	.fork-thread-card {
 		max-width: 33%;
 	}
+}
+
+[component="post"] {
+	
+	[component="user/picture"], [component="user/status"] {
+		opacity: 1;
+	}
+	
+	.icon:before {
+		opacity: 0;
+	}
+	
+	&.bg-success {
+		background-color: initial;
+		
+		.icon:before {
+			border: 1px solid #5cb85c;
+    		color: #5cb85c;
+    		-webkit-transition: .2s ease-in-out all;
+    		transition: .2s ease-in-out all;
+    		content: "\f00c";
+    		padding: 14px;
+		    border-radius: 50%;
+		    opacity: 1;
+		    position: absolute;
+		    display: inline-block;
+		    font: normal normal normal 14px/1 FontAwesome;
+		}
+		
+		[component="user/picture"], [component="user/status"] {
+			opacity: 0;
+		}
+	}
 }

templates/partials/fork_thread_modal.tpl

@@ -5,7 +5,7 @@
 	<div class="panel-body">
 		<div class="form-group">
 			<label for="title">Title</label>
-			<input id="fork-title" type="text" class="form-control" placeholder="Enter new thread title">
+			<input id="fork-title" type="text" class="form-control" placeholder="Enter new topic title">
 		</div>
 		<p>
 			[[topic:fork_topic_instruction]]<br />
@@ -16,7 +16,7 @@
 		&nbsp;
 		<div class="btn-group pull-right">
 			<button class="btn btn-link btn-xs" id="fork_thread_cancel">[[global:buttons.close]]</button>
-			<button class="btn btn-primary btn-xs" id="fork_thread_commit">[[topic:fork_topic]] <i class="fa fa-arrow-circle-right"></i></button>
+			<button class="btn btn-primary btn-xs" id="fork_thread_commit" disabled>[[topic:fork_topic]] <i class="fa fa-arrow-circle-right"></i></button>
 		</div>
 	</div>
 </div>