feat: upgrade to tailwindcss v4

app/routes/dns/components/manage-domains.tsx

@@ -167,7 +167,7 @@ function Domain({ domain, id, isDragging, isDisabled }: DomainProps) {
 			ref={setNodeRef}
 			className={cn(
 				isSortableDragging ? 'opacity-50' : '',
-				isDragging ? 'ring bg-white dark:bg-headplane-900' : '',
+				isDragging ? 'ring-3 bg-white dark:bg-headplane-900' : '',
 			)}
 			style={{
 				transform: CSS.Transform.toString(transform),
@@ -179,7 +179,7 @@ function Domain({ domain, id, isDragging, isDisabled }: DomainProps) {
 					<GripVertical
 						{...attributes}
 						{...listeners}
-						className="p-0.5 focus:ring outline-none rounded-md"
+						className="p-0.5 focus:ring-3 outline-hidden rounded-md"
 					/>
 				)}
 				{domain}

app/routes/dns/overview.tsx

@@ -70,7 +70,7 @@ export default function Page() {
 	const isDisabled = data.access === false || data.writable === false;
 
 	return (
-		<div className="flex flex-col gap-16 max-w-screen-lg">
+		<div className="flex flex-col gap-16 max-w-(--breakpoint-lg)">
 			{data.writable ? undefined : (
 				<Notice>
 					The Headscale configuration is read-only. You cannot make changes to

app/routes/machines/components/machine-row.tsx

@@ -49,16 +49,16 @@ export default function MachineRow({
 			key={node.id}
 			className="group hover:bg-headplane-50 dark:hover:bg-headplane-950"
 		>
-			<td className="pl-0.5 py-2 focus-within:ring">
+			<td className="pl-0.5 py-2 focus-within:ring-3">
 				<Link
 					to={`/machines/${node.id}`}
-					className={cn('group/link h-full focus:outline-none')}
+					className={cn('group/link h-full focus:outline-hidden')}
 				>
 					<p
 						className={cn(
 							'font-semibold leading-snug',
 							'group-hover/link:text-blue-600',
-							'group-hover/link:dark:text-blue-400',
+							'dark:group-hover/link:text-blue-400',
 						)}
 					>
 						{node.givenName}

app/routes/machines/dialogs/tags.tsx

@@ -59,10 +59,10 @@ export default function Tags({ machine, isOpen, setIsOpen }: TagsProps) {
 					)}
 					<TableList.Item
 						className={cn(
-							'rounded-b-xl focus-within:ring',
+							'rounded-b-xl focus-within:ring-3',
 							tag.length > 0 &&
 								(!tag.startsWith('tag:') || tags.includes(tag)) &&
-								'ring ring-red-500 ring-opacity-50',
+								'ring-3 ring-red-500 ring-opacity-50',
 						)}
 					>
 						<Input

app/routes/settings/local-agent.tsx

@@ -29,7 +29,7 @@ export default function Page() {
 	}, [data.configured, data.onboarding]);
 
 	return (
-		<div className="flex flex-col gap-8 max-w-screen-lg">
+		<div className="flex flex-col gap-8 max-w-(--breakpoint-lg)">
 			{management ? (
 				<AgentManagement reachable={true} hostInfo={data.stats} />
 			) : (

app/routes/settings/overview.tsx

@@ -18,7 +18,7 @@ export default function Page() {
 	const { config, oidc } = useLoaderData<typeof loader>();
 
 	return (
-		<div className="flex flex-col gap-8 max-w-screen-lg">
+		<div className="flex flex-col gap-8 max-w-(--breakpoint-lg)">
 			<div className="flex flex-col w-2/3">
 				<h1 className="text-2xl font-medium mb-4">Settings</h1>
 				<p>

app/routes/settings/restrictions/overview.tsx

@@ -52,7 +52,7 @@ export default function Page() {
 	const isDisabled = writable ? !access : true;
 
 	return (
-		<div className="flex flex-col gap-4 max-w-screen-lg">
+		<div className="flex flex-col gap-4 max-w-(--breakpoint-lg)">
 			<div className="flex flex-col w-2/3">
 				<p className="mb-4 text-md">
 					<RemixLink to="/settings" className="font-medium">