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resources/js/components/AppearanceTabs.svelte

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+<script lang="ts">
+    import Monitor from 'lucide-svelte/icons/monitor';
+    import Moon from 'lucide-svelte/icons/moon';
+    import Sun from 'lucide-svelte/icons/sun';
+    import type { Component, SvelteComponent } from 'svelte';
+    import { themeState } from '@/lib/theme.svelte';
+    import type { Appearance } from '@/types';
+
+    const { appearance, updateAppearance } = themeState();
+
+    type IconComponent =
+        | Component<{ class?: string }>
+        | (new (...args: any[]) => SvelteComponent<{ class?: string }>);
+
+    const tabs: { value: Appearance; Icon: IconComponent; label: string }[] = [
+        { value: 'light', Icon: Sun, label: 'Light' },
+        { value: 'dark', Icon: Moon, label: 'Dark' },
+        { value: 'system', Icon: Monitor, label: 'System' },
+    ];
+
+    function handleAppearanceChange(value: Appearance) {
+        updateAppearance(value);
+    }
+</script>
+
+<div
+    class="inline-flex gap-1 rounded-lg bg-neutral-100 p-1 dark:bg-neutral-800"
+>
+    {#each tabs as { value, Icon, label } (value)}
+        <button
+            onclick={() => handleAppearanceChange(value)}
+            class="flex items-center rounded-md px-3.5 py-1.5 transition-colors {appearance.value ===
+            value
+                ? 'bg-white shadow-xs dark:bg-neutral-700 dark:text-neutral-100'
+                : 'text-neutral-500 hover:bg-neutral-200/60 hover:text-black dark:text-neutral-400 dark:hover:bg-neutral-700/60'}"
+        >
+            <Icon class="-ml-1 h-4 w-4" />
+            <span class="ml-1.5 text-sm">{label}</span>
+        </button>
+    {/each}
+</div>