Label with optional indicator

<script setup lang="ts">
import { Field } from "@/components/ui/field"
import { Input } from "@/components/ui/input"
import { Label } from "@/components/ui/label"
</script>

<template>
  <Field class="w-full max-w-xs">
    <Label for="label-optional">
      Phone number
      <span class="text-muted-foreground">(optional)</span>
    </Label>
    <Input id="label-optional" type="tel" placeholder="+1 (555) 000-0000" />
  </Field>
</template>