Implement 'internal submit button' to the 'Textbox' component. Remove separate submit to the Headcode search card.

Adjust the hover and active styles of the 'TrainService' expandable cards.

src/lib/components/ui/TrainService.svelte

@@ -93,7 +93,7 @@
 	};
 </script>
 
-<div class="train-service">
+<div class="train-service" class:isExpanded={isExpanded}>
 	<button class="summary" onclick={toggleExpand} type="button" aria-expanded={isExpanded}>
 		{#if loadingDetails}
 			<div class="loading-state"><div class="loading-spinner"></div></div>
@@ -241,10 +241,18 @@
 		filter: brightness(1.2);
 	}
 
+	.train-service:active .arrow {
+		filter: brightness(0.2);
+	}
+
 	@media (hover: hover) {
-		.train-service:hover {
+		.train-service:not(.isExpanded):hover {
 			filter: brightness(1.2);
 		}
+
+		.summary:hover .arrow {
+			filter: brightness(0.2);
+		}
 	}
 
 	/* 
@@ -299,7 +307,7 @@
 		padding: 0;
 		margin: 0 0 0 auto;
 		height: 25px;
-		transition: all 0.9s;
+		transition: all 0.3s;
 	}
 
 	.expanded {