diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index a936c2e..0dcc8ed 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -4,6 +4,9 @@ settings:
   autoInstallPeers: true
   excludeLinksFromLockfile: false
 
+overrides:
+  '@svelte-toolkit/validate': link:../validate
+
 importers:
 
   .:
@@ -22,8 +25,8 @@ importers:
         specifier: ^0.2.1
         version: 0.2.1(svelte@5.34.9)
       '@svelte-toolkit/validate':
-        specifier: ^0.0.0
-        version: 0.0.0(svelte@5.34.9)
+        specifier: link:../validate
+        version: link:../validate
       '@sveltejs/adapter-auto':
         specifier: ^4.0.0
         version: 4.0.0(@sveltejs/kit@2.22.2(@sveltejs/vite-plugin-svelte@5.1.0(svelte@5.34.9)(vite@6.3.5(@types/node@24.0.9)(jiti@2.4.2)(lightningcss@1.30.1)))(svelte@5.34.9)(vite@6.3.5(@types/node@24.0.9)(jiti@2.4.2)(lightningcss@1.30.1)))
@@ -497,11 +500,6 @@ packages:
   '@sinclair/typebox@0.27.8':
     resolution: {integrity: sha512-+Fj43pSMwJs4KRrH/938Uf+uAELIgVBmQzg/q1YG10djyfA3TnrU8N8XzqCh/okZdszqBQTZf96idMfE5lnwTA==}
 
-  '@svelte-toolkit/validate@0.0.0':
-    resolution: {integrity: sha512-A8qdXyYh7SyauqA83pJSUZ8tBTYjWTxsV29Zv4R6GPw9lfp9l9b+y98gEFDvZn6bgPEzOXBrf76TJKAUXvsACA==, tarball: https://gitea.auvem.com/api/packages/svelte-toolkit/npm/%40svelte-toolkit%2Fvalidate/-/0.0.0/validate-0.0.0.tgz}
-    peerDependencies:
-      svelte: ^5.0.0
-
   '@sveltejs/acorn-typescript@1.0.5':
     resolution: {integrity: sha512-IwQk4yfwLdibDlrXVE04jTZYlLnwsTT2PIOQQGNLWfjavGifnk1JD1LcZjZaBTRcxZu2FfPfNLOE04DSu9lqtQ==}
     peerDependencies:
@@ -1895,10 +1893,6 @@ snapshots:
 
   '@sinclair/typebox@0.27.8': {}
 
-  '@svelte-toolkit/validate@0.0.0(svelte@5.34.9)':
-    dependencies:
-      svelte: 5.34.9
-
   '@sveltejs/acorn-typescript@1.0.5(acorn@8.15.0)':
     dependencies:
       acorn: 8.15.0
diff --git a/pnpm-workspace.yaml b/pnpm-workspace.yaml
new file mode 100644
index 0000000..9deff6e
--- /dev/null
+++ b/pnpm-workspace.yaml
@@ -0,0 +1,2 @@
+overrides:
+  '@svelte-toolkit/validate': link:../validate
diff --git a/src/lib/Dateinput.svelte b/src/lib/Dateinput.svelte
new file mode 100644
index 0000000..e5ef838
--- /dev/null
+++ b/src/lib/Dateinput.svelte
@@ -0,0 +1,301 @@
+<script lang="ts">
+	import { InputValidatorEvent, liveValidator, validate } from '@svelte-toolkit/validate';
+	import { CalendarBlank } from 'phosphor-svelte';
+	import { type Snippet } from 'svelte';
+	import type { ClassValue, FormEventHandler, KeyboardEventHandler } from 'svelte/elements';
+
+	type FormatString = 'year' | 'month' | 'day';
+	const blankState = {
+		year: 'yyyy',
+		month: 'mm',
+		day: 'dd'
+	};
+
+	interface Props {
+		name?: string;
+		value?: Date;
+		min?: Date;
+		max?: Date;
+		required?: boolean;
+		class?: ClassValue | undefined | null;
+		format?: FormatString[];
+	}
+
+	let {
+		name,
+		value = $bindable<Date | undefined>(),
+		min = new Date(1900, 0, 1),
+		max = new Date(2100, 11, 31),
+		required = false,
+		class: classList,
+		format = ['year', 'month', 'day']
+	}: Props = $props();
+
+	const inputSnippets = $derived.by(() => {
+		const found: Partial<Record<FormatString, boolean>> = {};
+		const arr: Snippet[] = [];
+
+		format.forEach((f) => {
+			if (found[f]) throw new Error(`Duplicate format string: ${f}`);
+			found[f] = true;
+
+			switch (f) {
+				case 'year':
+					return arr.push(year);
+				case 'month':
+					return arr.push(month);
+				case 'day':
+					return arr.push(day);
+				default:
+					throw new Error(`Unknown format string: ${f}`);
+			}
+		});
+
+		return arr;
+	});
+
+	let valid = $state(true);
+	let containerElement: HTMLDivElement;
+	let yearValid = $state(true);
+	let yearElement = $state<HTMLDivElement | null>(null);
+	let monthValid = $state(true);
+	let monthElement = $state<HTMLDivElement | null>(null);
+	let dayValid = $state(true);
+	let dayElement = $state<HTMLDivElement | null>(null);
+	let previousYearValue = $state<string | undefined>(undefined);
+	let yearValue = $derived.by(() => {
+		if (!value && previousYearValue) {
+			return previousYearValue;
+		}
+		if (value) {
+			return value.getFullYear().toString();
+		}
+		return blankState['year'];
+	});
+	let previousMonthValue = $state<string | undefined>(undefined);
+	let monthValue = $derived.by(() => {
+		if (!value && previousMonthValue) {
+			return previousMonthValue;
+		}
+		if (value) {
+			return String(value.getMonth() + 1).padStart(2, '0');
+		}
+		return blankState['month'];
+	});
+	let previousDayValue = $state<string | undefined>(undefined);
+	let dayValue = $derived.by(() => {
+		if (!value && previousDayValue) {
+			return previousDayValue;
+		}
+		if (value) {
+			return String(value.getDate()).padStart(2, '0');
+		}
+		return blankState['day'];
+	});
+
+	const tryUpdateValue = () => {
+		const setPrevious = () => {
+			previousYearValue = yearValue;
+			previousMonthValue = monthValue;
+			previousDayValue = dayValue;
+		};
+
+		let year: number | undefined = undefined;
+		if (yearElement) {
+			year = parseInt(yearElement.textContent || '', 10);
+			if (isNaN(year) || year < 0 || year > 9999) {
+				if (value) {
+					setPrevious();
+					previousYearValue = undefined;
+					value = undefined;
+					return;
+				}
+			}
+		}
+
+		let month: number | undefined = undefined;
+		if (monthElement) {
+			month = parseInt(monthElement.textContent || '', 10);
+			if (isNaN(month) || month < 1 || month > 12) {
+				if (value) {
+					setPrevious();
+					previousMonthValue = undefined;
+					value = undefined;
+					return;
+				}
+			}
+		}
+
+		let day: number | undefined = undefined;
+		if (dayElement) {
+			day = parseInt(dayElement.textContent || '', 10);
+			if (isNaN(day) || day < 1 || day > 31) {
+				if (value) {
+					setPrevious();
+					previousDayValue = undefined;
+					value = undefined;
+					return;
+				}
+			}
+		}
+
+		const newDate = new Date(
+			year ?? (value ? value.getFullYear() : min.getFullYear()),
+			month ? month - 1 : value ? value.getMonth() : min.getMonth(),
+			day ?? (value ? value.getDate() : min.getDate())
+		);
+		value = newDate;
+	};
+
+	const handleKeydown: KeyboardEventHandler<HTMLDivElement> = (e) => {
+		const target = e.target as HTMLDivElement;
+
+		if (target.isContentEditable && e.key === 'Enter') {
+			e.preventDefault();
+			target.blur(); // Remove focus to trigger blur event
+		}
+	};
+
+	const handleFocus = (e: FocusEvent) => {
+		const target = e.target as HTMLDivElement;
+
+		// Select all text in the input when focused
+		if (target.isContentEditable) {
+			const range = document.createRange();
+			const selection = window.getSelection();
+			range.selectNodeContents(target);
+			selection?.removeAllRanges();
+			selection?.addRange(range);
+		}
+	};
+
+	const handleComponentValidate = (e: InputValidatorEvent) => {
+		if (!e.detail.valid) {
+			const target = e.target as HTMLDivElement;
+			target.classList.add('invalid');
+			setTimeout(() => {
+				target.classList.remove('invalid');
+			}, 500);
+		}
+	};
+
+	const createHandleBlur = (defaultText: string) => {
+		return (e: FocusEvent) => {
+			const target = e.target as HTMLDivElement;
+			if (!target.textContent || target.textContent.trim() === '') {
+				target.textContent = defaultText;
+			}
+
+			if (e.relatedTarget === null || !containerElement.contains(e.relatedTarget as Node)) {
+				tryUpdateValue();
+			}
+		};
+	};
+</script>
+
+<div
+	bind:this={containerElement}
+	class={[
+		'inline-flex w-54 items-center justify-start gap-1',
+		'border-accent rounded-sm border bg-white px-[1.125rem] py-3.5 font-normal transition-colors',
+		'text-text dark:border-accent/50 dark:bg-text-800 dark:text-background dark:sm:bg-slate-800',
+		'ring-accent focus-within:ring-1',
+		!valid && 'border-red-500!',
+		classList
+	]}
+>
+	<input type="hidden" {name} value={value?.toISOString() ?? ''} />
+
+	{#each inputSnippets as snippet, i}
+		{@render snippet()}
+
+		{#if i < inputSnippets.length - 1}
+			<span class="text-text/60 dark:text-background/60">-</span>
+		{/if}
+	{/each}
+
+	<CalendarBlank size="1.5em" class="ml-auto" />
+</div>
+
+{#snippet year()}
+	<div
+		bind:this={yearElement}
+		bind:textContent={yearValue}
+		role="textbox"
+		tabindex="0"
+		class="date-input"
+		contenteditable
+		spellcheck="false"
+		onfocus={handleFocus}
+		onblur={createHandleBlur(blankState.year)}
+		onkeydown={handleKeydown}
+		use:validate={{
+			baseval: blankState.year,
+			pattern: /^\d{1,4}$/
+		}}
+		use:liveValidator={{ constrain: true }}
+		onvalidate={(e) => {
+			yearValid = e.detail.valid;
+			handleComponentValidate(e);
+		}}
+	></div>
+{/snippet}
+
+{#snippet month()}
+	<div
+		bind:this={monthElement}
+		bind:textContent={monthValue}
+		role="textbox"
+		tabindex="0"
+		class="date-input"
+		contenteditable
+		spellcheck="false"
+		onfocus={handleFocus}
+		onblur={createHandleBlur(blankState.month)}
+		onkeydown={handleKeydown}
+		use:validate={{
+			baseval: blankState.month,
+			pattern: /^(0[1-9]|1[0-2])$/
+		}}
+		use:liveValidator={{ constrain: true }}
+		onvalidate={(e) => {
+			monthValid = e.detail.valid;
+			handleComponentValidate(e);
+		}}
+	></div>
+{/snippet}
+
+{#snippet day()}
+	<div
+		bind:this={dayElement}
+		bind:textContent={dayValue}
+		role="textbox"
+		tabindex="0"
+		class="date-input"
+		contenteditable
+		spellcheck="false"
+		onfocus={handleFocus}
+		onblur={createHandleBlur(blankState.day)}
+		onkeydown={handleKeydown}
+		use:validate={{
+			baseval: blankState.day,
+			pattern: /^(0[1-9]|[12][0-9]|3[01])$/
+		}}
+		use:liveValidator={{ constrain: true }}
+		onvalidate={(e) => {
+			dayValid = e.detail.valid;
+			handleComponentValidate(e);
+		}}
+	></div>
+{/snippet}
+
+<style lang="postcss">
+	@reference "$lib/styles/theme.css";
+
+	.date-input {
+		@apply ring-accent dark:ring-accent/50 h-6 min-w-[1ch] outline-0 transition-all focus:ring-2;
+	}
+	.date-input.invalid {
+		@apply ring-red-500!;
+	}
+</style>
diff --git a/src/lib/styles/theme.css b/src/lib/styles/theme.css
index e1b5be9..bd8c6b4 100644
--- a/src/lib/styles/theme.css
+++ b/src/lib/styles/theme.css
@@ -10,7 +10,17 @@
 	--font-*: initial;
 	--font-sans: var(--ui-font-sans, Work Sans, sans-serif);
 	--font-serif: var(--ui-font-serif, Merriweather, serif);
-	--font-mono: var(--ui-font-mono, ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace);
+	--font-mono: var(
+		--ui-font-mono,
+		ui-monospace,
+		SFMono-Regular,
+		Menlo,
+		Monaco,
+		Consolas,
+		'Liberation Mono',
+		'Courier New',
+		monospace
+	);
 
 	/* Primary Colors */
 	--color-primary-50: var(--ui-primary-50, #f0f8fe);
@@ -83,7 +93,6 @@
 }
 
 @layer base {
-
 	*,
 	::after,
 	::before,
diff --git a/src/routes/+page.svelte b/src/routes/+page.svelte
index b1eea1f..a39bdd7 100644
--- a/src/routes/+page.svelte
+++ b/src/routes/+page.svelte
@@ -1,7 +1,10 @@
-<script>
+<script lang="ts">
 	import Button from '$lib/Button.svelte';
 	import Checkbox from '$lib/Checkbox.svelte';
 	import Combobox from '$lib/Combobox.svelte';
+	import Dateinput from '$lib/Dateinput.svelte';
+
+	let dateInputValue = $state<Date | undefined>(undefined);
 </script>
 
 <h1 class="mb-4 text-3xl font-bold">sui — Opinionated Svelte 5 UI toolkit</h1>
@@ -52,6 +55,26 @@
 	</Checkbox>
 </div>
 
+<div class="component">
+	<p class="title">Dateinput</p>
+
+	<div class="flex items-start gap-4">
+		<Dateinput bind:value={dateInputValue} />
+		<div class="shrink-0">
+			<Button
+				icon="add"
+				onclick={() => {
+					dateInputValue = new Date();
+					console.log('Dateinput value set to:', dateInputValue);
+				}}
+			>
+				Set Current Date
+			</Button>
+		</div>
+		<span>Selected date is {dateInputValue}</span>
+	</div>
+</div>
+
 <style lang="postcss">
 	@reference '$lib/styles/theme.css';