Refactor card components for improved layout consistency

- Updated padding and gap settings in the Card component across multiple files to enhance visual alignment and maintain a cohesive appearance.

web/src/lib/components/fleet/fleet-overview-charts.svelte

@@ -140,7 +140,7 @@
 </script>
 
 <div class="mb-6 grid gap-4 lg:grid-cols-2">
-	<Card.Root class="overflow-hidden rounded-lg border border-border shadow-sm">
+	<Card.Root class="gap-0 py-0 overflow-hidden rounded-lg border border-border shadow-sm">
 		<div class="border-b border-border bg-muted/40 px-4 py-3">
 			<div class="flex items-center gap-2">
 				<div class="flex size-9 items-center justify-center rounded-lg bg-muted text-muted-foreground">
@@ -156,7 +156,7 @@
 			<canvas bind:this={elDonut} class="max-h-full w-full"></canvas>
 		</Card.Content>
 	</Card.Root>
-	<Card.Root class="overflow-hidden rounded-lg border border-border shadow-sm">
+	<Card.Root class="gap-0 py-0 overflow-hidden rounded-lg border border-border shadow-sm">
 		<div class="border-b border-border bg-muted/40 px-4 py-3">
 			<div class="flex items-center gap-2">
 				<div class="flex size-9 items-center justify-center rounded-lg bg-muted text-muted-foreground">

web/src/lib/components/kpi-panel-card.svelte

@@ -26,7 +26,7 @@
 	} = $props();
 </script>
 
-<Card.Root class={cn('border-l-4 shadow-sm', kpiAccent[accent].border, className)}>
+<Card.Root class={cn('gap-0 py-0 border-l-4 shadow-sm', kpiAccent[accent].border, className)}>
 	<Card.Header class={cn(headerClass)}>
 		<div class="flex gap-3">
 			<div

web/src/lib/components/kpi-stat-card.svelte

@@ -25,7 +25,7 @@
 	} = $props();
 </script>
 
-<Card.Root class={cn('border-l-4 shadow-sm transition-colors', kpiAccent[accent].border, className)}>
+<Card.Root class={cn('gap-0 py-0 border-l-4 shadow-sm transition-colors', kpiAccent[accent].border, className)}>
 	<Card.Header class="pb-2">
 		<div class="flex gap-3">
 			<div

web/src/lib/components/kpi-trend-card.svelte

@@ -62,7 +62,7 @@
 
 <Card.Root
 	class={cn(
-		'border-border bg-card shadow-sm transition-colors dark:bg-card/80',
+		'gap-0 py-0 border-border bg-card shadow-sm transition-colors dark:bg-card/80',
 		className
 	)}
 >