src/lib/components/ui/button/button.svelte

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+<script lang="ts">
+	import { Button as ButtonPrimitive } from "bits-ui";
+	import { cn } from "$lib/utils";
+	import { buttonVariants, type Props, type Events } from ".";
+
+	type $$Props = Props;
+	type $$Events = Events;
+
+	let className: $$Props["class"] = undefined;
+	export let variant: $$Props["variant"] = "default";
+	export let size: $$Props["size"] = "default";
+	export let builders: $$Props["builders"] = [];
+	export { className as class };
+</script>
+
+<ButtonPrimitive.Root
+	{builders}
+	class={cn(buttonVariants({ variant, size, className }))}
+	type="button"
+	{...$$restProps}
+	on:click
+	on:keydown
+>
+	<slot />
+</ButtonPrimitive.Root>

src/lib/components/ui/button/index.ts

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+import type { Button as ButtonPrimitive } from "bits-ui";
+import { tv, type VariantProps } from "tailwind-variants";
+import Root from "./button.svelte";
+
+const buttonVariants = tv({
+	base: "inline-flex items-center justify-center rounded-md text-sm font-medium whitespace-nowrap transition-colors focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50",
+	variants: {
+		variant: {
+			default:
+				"bg-primary text-primary-foreground shadow hover:bg-primary/90",
+			destructive:
+				"bg-destructive text-destructive-foreground shadow-sm hover:bg-destructive/90",
+			outline:
+				"border border-input bg-transparent shadow-sm hover:bg-accent hover:text-accent-foreground",
+			secondary:
+				"bg-secondary text-secondary-foreground shadow-sm hover:bg-secondary/80",
+			ghost: "hover:bg-accent hover:text-accent-foreground",
+			link: "text-primary underline-offset-4 hover:underline"
+		},
+		size: {
+			default: "h-9 px-4 py-2",
+			sm: "h-8 rounded-md px-3 text-xs",
+			lg: "h-10 rounded-md px-8",
+			icon: "h-9 w-9"
+		}
+	},
+	defaultVariants: {
+		variant: "default",
+		size: "default"
+	}
+});
+
+type Variant = VariantProps<typeof buttonVariants>["variant"];
+type Size = VariantProps<typeof buttonVariants>["size"];
+
+type Props = ButtonPrimitive.Props & {
+	variant?: Variant;
+	size?: Size;
+};
+
+type Events = ButtonPrimitive.Events;
+
+export {
+	Root,
+	type Props,
+	type Events,
+	//
+	Root as Button,
+	type Props as ButtonProps,
+	type Events as ButtonEvents,
+	buttonVariants
+};

src/lib/index.ts

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+// place files you want to import through the `$lib` alias in this folder.

src/lib/utils.ts

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+import { type ClassValue, clsx } from "clsx";
+import { twMerge } from "tailwind-merge";
+import { cubicOut } from "svelte/easing";
+import type { TransitionConfig } from "svelte/transition";
+
+export function cn(...inputs: ClassValue[]) {
+    return twMerge(clsx(inputs));
+}
+
+type FlyAndScaleParams = {
+    y?: number;
+    x?: number;
+    start?: number;
+    duration?: number;
+};
+
+export const flyAndScale = (
+    node: Element,
+    params: FlyAndScaleParams = { y: -8, x: 0, start: 0.95, duration: 150 }
+): TransitionConfig => {
+    const style = getComputedStyle(node);
+    const transform = style.transform === "none" ? "" : style.transform;
+
+    const scaleConversion = (
+        valueA: number,
+        scaleA: [number, number],
+        scaleB: [number, number]
+    ) => {
+        const [minA, maxA] = scaleA;
+        const [minB, maxB] = scaleB;
+
+        const percentage = (valueA - minA) / (maxA - minA);
+        const valueB = percentage * (maxB - minB) + minB;
+
+        return valueB;
+    };
+
+    const styleToString = (
+        style: Record<string, number | string | undefined>
+    ): string => {
+        return Object.keys(style).reduce((str, key) => {
+            if (style[key] === undefined) return str;
+            return str + `${key}:${style[key]};`;
+        }, "");
+    };
+
+    return {
+        duration: params.duration ?? 200,
+        delay: 0,
+        css: (t) => {
+            const y = scaleConversion(t, [0, 1], [params.y ?? 5, 0]);
+            const x = scaleConversion(t, [0, 1], [params.x ?? 0, 0]);
+            const scale = scaleConversion(t, [0, 1], [params.start ?? 0.95, 1]);
+
+            return styleToString({
+                transform: `${transform} translate3d(${x}px, ${y}px, 0) scale(${scale})`,
+                opacity: t
+            });
+        },
+        easing: cubicOut
+    };
+};

src/routes/Header.svelte

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+<script lang="ts">
+import {page} from "$app/stores";
+import { Button } from "$lib/components/ui/button"
+
+const button = "border-t-2 bg-black/50 hover:bg-black/70 hover:border-primary w-28";
+
+</script>
+
+
+<ul class="w-full h-16 border-b sticky flex flex-row items-center justify-center gap-3 backdrop-blur-sm bg-black/40">
+    <li>
+        <Button
+                variant="ghost"
+                href="/"
+                class="{button} + {$page.url.pathname == '/' ? 'border-primary text-primary' : 'text-accent'}"
+        >
+            Home
+        </Button>
+    </li>
+    <li>
+        <Button
+            variant="ghost"
+            href="/servers"
+            class="{button} + {$page.url.pathname.startsWith('/servers') ? 'border-primary text-primary' : 'text-accent'}"
+        >
+            Servers
+        </Button>
+    </li>
+    <li>
+        <Button
+                variant="ghost"
+                href="/services"
+                class="{button} + {$page.url.pathname.startsWith('/services') ? 'border-primary text-primary' : 'text-accent'}"
+        >
+            Services
+        </Button>
+    </li>
+    <li>
+        <Button
+                variant="ghost"
+                href="/about"
+                class="{button} + {$page.url.pathname.startsWith('/about') ? 'border-primary text-primary' : 'text-accent'}"
+        >
+            About
+        </Button>
+    </li>
+</ul>