Input Group

TSX
"use client";

import { useId } from "react";

import {
  InputGroup,
  InputGroupAddon,
  InputGroupInput,
  InputGroupText,
} from "@/components/ui/input-group";
import { Label } from "@/components/ui/label";

const fields = [
  {
    key: "seat-price",
    label: "Price per seat",
    prefix: "$",
    suffix: "USD / month",
    defaultValue: "12.00",
    inputMode: "decimal",
  },
  {
    key: "trial-length",
    label: "Free trial",
    prefix: null,
    suffix: "days",
    defaultValue: "14",
    inputMode: "numeric",
  },
  {
    key: "annual-discount",
    label: "Annual discount",
    prefix: null,
    suffix: "%",
    defaultValue: "20",
    inputMode: "numeric",
  },
] as const;

export default function InputGroup01() {
  const id = useId();

  return (
    <form
      className="flex w-full max-w-sm flex-col gap-5"
      onSubmit={(event) => event.preventDefault()}
    >
      {fields.map((field) => {
        const inputId = `${id}-${field.key}`;
        return (
          <div key={field.key} className="flex flex-col gap-2">
            <Label htmlFor={inputId}>{field.label}</Label>
            <InputGroup>
              {field.prefix ? (
                <InputGroupAddon>
                  <InputGroupText>{field.prefix}</InputGroupText>
                </InputGroupAddon>
              ) : null}
              <InputGroupInput
                id={inputId}
                inputMode={field.inputMode}
                defaultValue={field.defaultValue}
                className="tabular-nums"
              />
              <InputGroupAddon align="inline-end">
                <InputGroupText>{field.suffix}</InputGroupText>
              </InputGroupAddon>
            </InputGroup>
          </div>
        );
      })}
    </form>
  );
}

TSX
"use client";

import { useId } from "react";
import { SearchIcon } from "lucide-react";

import {
  InputGroup,
  InputGroupAddon,
  InputGroupInput,
} from "@/components/ui/input-group";
import { Kbd } from "@/components/ui/kbd";
import { Label } from "@/components/ui/label";

// One field, three densities: a table toolbar, a form, and a hero search.
const sizes = [
  {
    key: "compact",
    label: "Filter invoices",
    size: "28px",
    placeholder: "Invoice number or customer",
    group: "h-7 rounded-md",
    input: "h-full text-xs md:text-xs",
    icon: "size-3.5",
    shortcut: null,
  },
  {
    key: "default",
    label: "Search documentation",
    size: "32px",
    placeholder: "Guides, primitives, API",
    group: "",
    input: "h-full",
    icon: "size-4",
    shortcut: "/",
  },
  {
    key: "comfortable",
    label: "Search everything",
    size: "44px",
    placeholder: "Projects, people, and files",
    group: "h-11 rounded-xl",
    input: "h-full text-base md:text-base",
    icon: "size-5",
    shortcut: "⌘K",
  },
] as const;

export default function InputGroup02() {
  const id = useId();

  return (
    <div className="flex w-full max-w-md flex-col gap-6">
      {sizes.map((size) => {
        const inputId = `${id}-${size.key}`;
        return (
          <div key={size.key} className="flex flex-col gap-2">
            <div className="flex items-baseline justify-between gap-3">
              <Label htmlFor={inputId}>{size.label}</Label>
              <span className="text-xs text-muted-foreground tabular-nums">
                {size.size}
              </span>
            </div>
            <InputGroup className={size.group}>
              <InputGroupAddon className={size.key === "comfortable" ? "pl-3" : undefined}>
                <SearchIcon aria-hidden="true" className={size.icon} />
              </InputGroupAddon>
              <InputGroupInput
                id={inputId}
                type="search"
                placeholder={size.placeholder}
                className={size.input}
              />
              {size.shortcut ? (
                <InputGroupAddon
                  align="inline-end"
                  className={size.key === "comfortable" ? "pr-3" : undefined}
                >
                  <Kbd>{size.shortcut}</Kbd>
                </InputGroupAddon>
              ) : null}
            </InputGroup>
          </div>
        );
      })}
    </div>
  );
}

TSX
"use client";

import { useId } from "react";
import { AtSignIcon, BuildingIcon, TicketIcon, UserIcon } from "lucide-react";

import {
  InputGroup,
  InputGroupAddon,
  InputGroupInput,
} from "@/components/ui/input-group";
import { Label } from "@/components/ui/label";

// Four surface treatments over the same anatomy. Only the group's own
// border, fill, radius, and shadow change; the addons stay untouched.
const surfaces = [
  {
    key: "outline",
    style: "Outline",
    label: "Full name",
    placeholder: "Maya Chen",
    icon: UserIcon,
    className: "",
  },
  {
    key: "filled",
    style: "Filled",
    label: "Work email",
    placeholder: "maya@northwind.com",
    icon: AtSignIcon,
    className:
      "border-transparent bg-muted dark:bg-muted has-[[data-slot=input-group-control]:focus-visible]:bg-background",
  },
  {
    key: "underline",
    style: "Underline",
    label: "Company",
    placeholder: "Northwind Labs",
    icon: BuildingIcon,
    className:
      "rounded-none border-x-0 border-t-0 bg-transparent dark:bg-transparent has-[[data-slot=input-group-control]:focus-visible]:ring-0 [&>[data-align=inline-start]]:pl-0",
  },
  {
    key: "elevated",
    style: "Elevated",
    label: "Invite code",
    placeholder: "NW-2026-BETA",
    icon: TicketIcon,
    className: "border-border/60 bg-card shadow-sm dark:bg-card",
  },
] as const;

export default function InputGroup03() {
  const id = useId();

  return (
    <div className="grid w-full max-w-md gap-5 sm:grid-cols-2">
      {surfaces.map((surface) => {
        const inputId = `${id}-${surface.key}`;
        const Icon = surface.icon;
        return (
          <div key={surface.key} className="flex flex-col gap-2">
            <div className="flex items-baseline justify-between gap-3">
              <Label htmlFor={inputId}>{surface.label}</Label>
              <span className="text-xs text-muted-foreground">
                {surface.style}
              </span>
            </div>
            <InputGroup className={surface.className}>
              <InputGroupAddon>
                <Icon aria-hidden="true" />
              </InputGroupAddon>
              <InputGroupInput id={inputId} placeholder={surface.placeholder} />
            </InputGroup>
          </div>
        );
      })}
    </div>
  );
}

TSX
"use client";

import { useId, useState } from "react";
import {
  CircleAlertIcon,
  CircleCheckIcon,
  LandmarkIcon,
  MailIcon,
} from "lucide-react";

import {
  InputGroup,
  InputGroupAddon,
  InputGroupInput,
  InputGroupText,
} from "@/components/ui/input-group";
import { Label } from "@/components/ui/label";

const EMAIL_PATTERN = /^[^\s@]+@[^\s@]+\.[^\s@]{2,}$/;
// EU VAT IDs: a two-letter country code followed by 8 to 12 characters.
const VAT_PATTERN = /^(AT|BE|DE|DK|ES|FI|FR|IE|IT|NL|PL|PT|SE)[0-9A-Z]{8,12}$/;

type Status = "idle" | "error" | "success";

function getEmailStatus(value: string): Status {
  if (!value) return "idle";
  return EMAIL_PATTERN.test(value) ? "success" : "error";
}

function getVatStatus(value: string): Status {
  // Stay quiet until the ID is long enough to judge.
  if (value.length < 10) return "idle";
  return VAT_PATTERN.test(value) ? "success" : "error";
}

const successGroup =
  "border-success/60 has-[[data-slot=input-group-control]:focus-visible]:border-success has-[[data-slot=input-group-control]:focus-visible]:ring-success/20";

export default function InputGroup04() {
  const id = useId();
  const [email, setEmail] = useState("maya@northwind");
  const [vat, setVat] = useState("DE294817365");

  const emailStatus = getEmailStatus(email);
  const vatStatus = getVatStatus(vat);

  return (
    <form
      noValidate
      className="flex w-full max-w-sm flex-col gap-5"
      onSubmit={(event) => event.preventDefault()}
    >
      <div className="flex flex-col gap-2">
        <Label htmlFor={`${id}-email`}>Billing email</Label>
        <InputGroup className={emailStatus === "success" ? successGroup : undefined}>
          <InputGroupAddon>
            <MailIcon aria-hidden="true" />
          </InputGroupAddon>
          <InputGroupInput
            id={`${id}-email`}
            type="email"
            autoComplete="email"
            value={email}
            aria-invalid={emailStatus === "error"}
            aria-describedby={`${id}-email-message`}
            onChange={(event) => setEmail(event.target.value.trim())}
          />
          {emailStatus !== "idle" ? (
            <InputGroupAddon align="inline-end">
              {emailStatus === "error" ? (
                <CircleAlertIcon aria-hidden="true" className="text-destructive" />
              ) : (
                <CircleCheckIcon aria-hidden="true" className="text-success" />
              )}
            </InputGroupAddon>
          ) : null}
        </InputGroup>
        <p
          id={`${id}-email-message`}
          aria-live="polite"
          className={
            emailStatus === "error"
              ? "text-sm text-destructive"
              : "text-sm text-muted-foreground"
          }
        >
          {emailStatus === "error"
            ? "Add the full domain, like maya@northwind.com."
            : "Receipts and failed-payment notices go here."}
        </p>
      </div>

      <div className="flex flex-col gap-2">
        <Label htmlFor={`${id}-vat`}>VAT number</Label>
        <InputGroup className={vatStatus === "success" ? successGroup : undefined}>
          <InputGroupAddon>
            <LandmarkIcon aria-hidden="true" />
          </InputGroupAddon>
          <InputGroupInput
            id={`${id}-vat`}
            value={vat}
            placeholder="DE123456789"
            autoCapitalize="characters"
            autoComplete="off"
            spellCheck={false}
            aria-invalid={vatStatus === "error"}
            aria-describedby={`${id}-vat-message`}
            className="tracking-wide tabular-nums"
            onChange={(event) =>
              setVat(event.target.value.toUpperCase().replace(/[\s.-]/g, ""))
            }
          />
          {vatStatus === "success" ? (
            <InputGroupAddon align="inline-end">
              <InputGroupText className="text-success">
                <CircleCheckIcon aria-hidden="true" />
                Valid
              </InputGroupText>
            </InputGroupAddon>
          ) : null}
          {vatStatus === "error" ? (
            <InputGroupAddon align="inline-end">
              <CircleAlertIcon aria-hidden="true" className="text-destructive" />
            </InputGroupAddon>
          ) : null}
        </InputGroup>
        <p
          id={`${id}-vat-message`}
          aria-live="polite"
          className={
            vatStatus === "error"
              ? "text-sm text-destructive"
              : "text-sm text-muted-foreground"
          }
        >
          {vatStatus === "success"
            ? "Reverse charge applies, so invoices won’t include VAT."
            : vatStatus === "error"
              ? "Start with the country code, like DE294817365."
              : "EU businesses only. Leave empty to be charged VAT."}
        </p>
      </div>
    </form>
  );
}

TSX
"use client";

import { useEffect, useId, useState } from "react";
import {
  CheckIcon,
  CopyIcon,
  CreditCardIcon,
  GlobeIcon,
  LockIcon,
} from "lucide-react";

import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuGroup,
  DropdownMenuLabel,
  DropdownMenuRadioGroup,
  DropdownMenuRadioItem,
  DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu";
import {
  InputGroup,
  InputGroupAddon,
  InputGroupButton,
  InputGroupInput,
  InputGroupText,
} from "@/components/ui/input-group";
import { Label } from "@/components/ui/label";

const PROJECT_ID = "prj_8kd2Lq41ZxVt";

const plans = [
  {
    key: "team-yearly",
    label: "Team, billed yearly",
    note: "Renews on March 4, 2027 for $1,152.",
  },
  {
    key: "team-monthly",
    label: "Team, billed monthly",
    note: "Renews on October 4, 2026 for $120.",
  },
  {
    key: "business-yearly",
    label: "Business, billed yearly",
    note: "Renews on March 4, 2027 for $2,880. The difference is prorated.",
  },
] as const;

type PlanKey = (typeof plans)[number]["key"];

// Read-only fields stay focusable and selectable, so they get a quiet fill
// instead of the dimmed disabled treatment.
const readOnlyGroup = "bg-muted/50 dark:bg-muted/40";

export default function InputGroup05() {
  const id = useId();
  const [copied, setCopied] = useState(false);
  const [planKey, setPlanKey] = useState<PlanKey>("team-yearly");
  const plan = plans.find((option) => option.key === planKey) ?? plans[0];

  useEffect(() => {
    if (!copied) return;
    const timeout = window.setTimeout(() => setCopied(false), 1600);
    return () => window.clearTimeout(timeout);
  }, [copied]);

  const copyProjectId = () => {
    navigator.clipboard?.writeText(PROJECT_ID).catch(() => {});
    setCopied(true);
  };

  return (
    <div className="flex w-full max-w-sm flex-col gap-5">
      <div className="flex flex-col gap-2">
        <Label htmlFor={`${id}-project`}>Project ID</Label>
        <InputGroup className={readOnlyGroup}>
          <InputGroupInput
            id={`${id}-project`}
            readOnly
            value={PROJECT_ID}
            className="font-mono text-xs md:text-xs"
          />
          <InputGroupAddon align="inline-end">
            <InputGroupButton
              size="icon-xs"
              aria-label={copied ? "Copied" : "Copy project ID"}
              onClick={copyProjectId}
            >
              {copied ? (
                <CheckIcon aria-hidden="true" className="text-success" />
              ) : (
                <CopyIcon aria-hidden="true" />
              )}
            </InputGroupButton>
          </InputGroupAddon>
        </InputGroup>
      </div>

      <div className="flex flex-col gap-2">
        <Label htmlFor={`${id}-plan`}>Current plan</Label>
        <InputGroup className={readOnlyGroup}>
          <InputGroupAddon>
            <CreditCardIcon aria-hidden="true" />
          </InputGroupAddon>
          <InputGroupInput
            id={`${id}-plan`}
            readOnly
            value={plan.label}
            aria-describedby={`${id}-plan-note`}
          />
          <InputGroupAddon align="inline-end">
            <DropdownMenu>
              <DropdownMenuTrigger
                render={
                  <InputGroupButton
                    variant="outline"
                    aria-label={`Change plan, currently ${plan.label}`}
                  />
                }
              >
                Change
              </DropdownMenuTrigger>
              <DropdownMenuContent align="end" className="w-56">
                <DropdownMenuGroup>
                  <DropdownMenuLabel>Switch plan</DropdownMenuLabel>
                  <DropdownMenuRadioGroup
                    value={planKey}
                    onValueChange={(value) => setPlanKey(value as PlanKey)}
                  >
                    {plans.map((option) => (
                      <DropdownMenuRadioItem
                        key={option.key}
                        value={option.key}
                        closeOnClick
                      >
                        {option.label}
                      </DropdownMenuRadioItem>
                    ))}
                  </DropdownMenuRadioGroup>
                </DropdownMenuGroup>
              </DropdownMenuContent>
            </DropdownMenu>
          </InputGroupAddon>
        </InputGroup>
        <p id={`${id}-plan-note`} className="text-sm text-muted-foreground">
          {plan.note}
        </p>
      </div>

      <div className="flex flex-col gap-2">
        <Label htmlFor={`${id}-region`}>Data region</Label>
        <InputGroup data-disabled="true">
          <InputGroupAddon>
            <GlobeIcon aria-hidden="true" />
          </InputGroupAddon>
          <InputGroupInput
            id={`${id}-region`}
            disabled
            defaultValue="eu-central-1 (Frankfurt)"
            aria-describedby={`${id}-region-note`}
          />
          <InputGroupAddon align="inline-end">
            <InputGroupText>
              <LockIcon aria-hidden="true" />
              Locked
            </InputGroupText>
          </InputGroupAddon>
        </InputGroup>
        <p id={`${id}-region-note`} className="text-sm text-muted-foreground">
          The region is fixed once a project is created.
        </p>
      </div>
    </div>
  );
}

TSX
"use client";

import { useEffect, useId, useRef, useState } from "react";
import { GlobeIcon, LinkIcon, XIcon } from "lucide-react";

import {
  InputGroup,
  InputGroupAddon,
  InputGroupButton,
  InputGroupInput,
  InputGroupText,
} from "@/components/ui/input-group";
import { Label } from "@/components/ui/label";
import { Spinner } from "@/components/ui/spinner";

type Preview = { title: string; site: string };

// Simulated unfurl results, keyed by host and path.
const knownPages: Record<string, Preview> = {
  "northwind.dev/blog/pricing-page-teardown": {
    title: "Pricing page teardown: 12 patterns that lift trial starts",
    site: "Northwind Engineering Blog",
  },
  "docs.relay.so/guides/webhooks": {
    title: "Receiving webhooks: retries, signatures, and idempotency",
    site: "Relay Docs",
  },
};

const URL_PATTERN = /^(?:https?:\/\/)?([a-z0-9-]+(?:\.[a-z0-9-]+)+)(\/\S*)?$/i;

type State =
  | { status: "empty" }
  | { status: "invalid" }
  | { status: "loading" }
  | { status: "ready"; preview: Preview }
  | { status: "fallback"; host: string };

function describe(url: string): Preview | { host: string } {
  const match = url.match(URL_PATTERN);
  const host = match?.[1]?.toLowerCase() ?? "";
  const key = `${host}${(match?.[2] ?? "").replace(/\/$/, "")}`;
  return knownPages[key] ?? { host };
}

export default function InputGroup06() {
  const id = useId();
  const inputRef = useRef<HTMLInputElement>(null);
  const [url, setUrl] = useState("northwind.dev/blog/pricing-page-teardown");
  const [state, setState] = useState<State>({ status: "loading" });

  // Wait for typing to pause, then "fetch" the page. Every keystroke cancels
  // the pending request.
  useEffect(() => {
    const value = url.trim();
    if (!value) {
      setState({ status: "empty" });
      return;
    }
    if (!URL_PATTERN.test(value)) {
      setState({ status: "invalid" });
      return;
    }
    setState({ status: "loading" });
    const timeout = window.setTimeout(() => {
      const result = describe(value);
      setState(
        "title" in result
          ? { status: "ready", preview: result }
          : { status: "fallback", host: result.host },
      );
    }, 900);
    return () => window.clearTimeout(timeout);
  }, [url]);

  return (
    <div className="flex w-full max-w-md flex-col gap-2">
      <Label htmlFor={`${id}-url`}>Reading list link</Label>
      <InputGroup aria-busy={state.status === "loading"}>
        <InputGroupInput
          ref={inputRef}
          id={`${id}-url`}
          type="url"
          inputMode="url"
          value={url}
          placeholder="Paste an article or docs link"
          autoComplete="off"
          spellCheck={false}
          aria-invalid={state.status === "invalid"}
          aria-describedby={`${id}-preview`}
          onChange={(event) => setUrl(event.target.value)}
        />
        <InputGroupAddon
          align="block-end"
          id={`${id}-preview`}
          aria-live="polite"
          className="min-h-11 border-t"
        >
          {state.status === "empty" ? (
            <InputGroupText className="text-xs">
              <LinkIcon aria-hidden="true" className="size-3.5" />
              A title and site name appear here once the link loads.
            </InputGroupText>
          ) : null}
          {state.status === "invalid" ? (
            <InputGroupText className="text-xs text-destructive">
              That doesn’t look like a web address yet.
            </InputGroupText>
          ) : null}
          {state.status === "loading" ? (
            <InputGroupText className="text-xs">
              <Spinner aria-hidden="true" role="presentation" className="size-3.5" />
              Fetching preview…
            </InputGroupText>
          ) : null}
          {state.status === "ready" || state.status === "fallback" ? (
            <div className="flex min-w-0 flex-1 items-center gap-2.5">
              <span className="grid size-7 shrink-0 place-items-center rounded-md bg-muted text-muted-foreground">
                <GlobeIcon aria-hidden="true" className="size-3.5" />
              </span>
              <span className="flex min-w-0 flex-1 flex-col">
                <span className="truncate text-sm font-medium text-foreground">
                  {state.status === "ready"
                    ? state.preview.title
                    : "No preview available"}
                </span>
                <span className="truncate text-xs font-normal text-muted-foreground">
                  {state.status === "ready"
                    ? state.preview.site
                    : `${state.host} · the link is still saved`}
                </span>
              </span>
              <InputGroupButton
                size="icon-xs"
                aria-label="Clear link"
                onClick={() => {
                  setUrl("");
                  // The button unmounts with the preview, so hand focus back
                  // to the field instead of dropping it on the page.
                  inputRef.current?.focus();
                }}
              >
                <XIcon aria-hidden="true" />
              </InputGroupButton>
            </div>
          ) : null}
        </InputGroupAddon>
      </InputGroup>
      <p className="text-xs text-muted-foreground">
        Try docs.relay.so/guides/webhooks, or any other address.
      </p>
    </div>
  );
}

TSX
"use client";

import { useId, useState } from "react";
import { CalendarIcon } from "lucide-react";

import { Calendar } from "@/components/ui/calendar";
import {
  InputGroup,
  InputGroupAddon,
  InputGroupButton,
  InputGroupInput,
} from "@/components/ui/input-group";
import { Label } from "@/components/ui/label";
import {
  Popover,
  PopoverContent,
  PopoverTrigger,
} from "@/components/ui/popover";

const formatter = new Intl.DateTimeFormat("en-US", {
  month: "short",
  day: "numeric",
  year: "numeric",
});

const weekday = new Intl.DateTimeFormat("en-US", { weekday: "long" });

// Accepts "Oct 12, 2026", "10/12/2026", or "2026-10-12".
function parseDate(value: string): Date | null {
  const text = value.trim();
  if (!text) return null;
  const iso = text.match(/^(\d{4})-(\d{1,2})-(\d{1,2})$/);
  const us = text.match(/^(\d{1,2})\/(\d{1,2})\/(\d{4})$/);
  const date = iso
    ? new Date(Number(iso[1]), Number(iso[2]) - 1, Number(iso[3]))
    : us
      ? new Date(Number(us[3]), Number(us[1]) - 1, Number(us[2]))
      : new Date(text);
  return Number.isNaN(date.getTime()) ? null : date;
}

const earliest = new Date(2026, 8, 28);

export default function InputGroup07() {
  const id = useId();
  const [text, setText] = useState("Oct 12, 2026");
  const [date, setDate] = useState<Date | undefined>(new Date(2026, 9, 12));
  const [open, setOpen] = useState(false);

  const parsed = parseDate(text);
  const tooEarly = parsed !== null && parsed < earliest;
  const invalid = text.trim() !== "" && (parsed === null || tooEarly);

  function commit() {
    if (parsed && !tooEarly) {
      setDate(parsed);
      setText(formatter.format(parsed));
    }
  }

  return (
    <div className="flex w-full max-w-xs flex-col gap-2">
      <Label htmlFor={`${id}-date`}>Contract start date</Label>
      <InputGroup>
        <InputGroupInput
          id={`${id}-date`}
          value={text}
          placeholder="Oct 12, 2026"
          autoComplete="off"
          aria-invalid={invalid}
          aria-describedby={`${id}-date-hint`}
          onChange={(event) => setText(event.target.value)}
          onBlur={commit}
          onKeyDown={(event) => {
            if (event.key === "Enter") {
              event.preventDefault();
              commit();
            }
            if (event.key === "ArrowDown" && event.altKey) {
              event.preventDefault();
              setOpen(true);
            }
          }}
        />
        <InputGroupAddon align="inline-end">
          <Popover open={open} onOpenChange={setOpen}>
            <PopoverTrigger
              render={
                <InputGroupButton
                  size="icon-xs"
                  aria-label={
                    date
                      ? `Choose date, selected ${formatter.format(date)}`
                      : "Choose date"
                  }
                />
              }
            >
              <CalendarIcon aria-hidden="true" />
            </PopoverTrigger>
            <PopoverContent align="end" alignOffset={-8} className="w-auto p-0">
              <Calendar
                mode="single"
                selected={date}
                defaultMonth={date}
                disabled={{ before: earliest }}
                onSelect={(next) => {
                  setDate(next);
                  if (next) setText(formatter.format(next));
                  setOpen(false);
                }}
              />
            </PopoverContent>
          </Popover>
        </InputGroupAddon>
      </InputGroup>
      <p
        id={`${id}-date-hint`}
        aria-live="polite"
        className={
          invalid ? "text-sm text-destructive" : "text-sm text-muted-foreground"
        }
      >
        {tooEarly
          ? `Pick ${formatter.format(earliest)} or later. Earlier dates are already invoiced.`
          : invalid
            ? "Type a date like Oct 12, 2026 or 10/12/2026."
            : parsed
              ? `Starts on a ${weekday.format(parsed)}. Type a date or open the calendar.`
              : "Type a date or open the calendar."}
      </p>
    </div>
  );
}

TSX
"use client";

import { type ComponentProps, useId, useState } from "react";
import { ArrowUpDownIcon, SearchIcon } from "lucide-react";

import { Button } from "@/components/ui/button";
import {
  InputGroup,
  InputGroupAddon,
  InputGroupInput,
} from "@/components/ui/input-group";

// Labels sit inside the border in a block-start addon, so each group reads
// as one tall tap target. Useful on dense search and mobile forms.
function InsetField({
  id,
  label,
  className,
  ...props
}: ComponentProps<typeof InputGroupInput> & {
  id: string;
  label: string;
}) {
  return (
    <InputGroup className={className}>
      <InputGroupAddon align="block-start" className="pb-0">
        <label
          htmlFor={id}
          className="text-xs font-medium text-muted-foreground"
        >
          {label}
        </label>
      </InputGroupAddon>
      <InputGroupInput id={id} className="h-8 pt-0" {...props} />
    </InputGroup>
  );
}

export default function InputGroup08() {
  const id = useId();
  const [from, setFrom] = useState("San Francisco (SFO)");
  const [to, setTo] = useState("Lisbon (LIS)");
  const [depart, setDepart] = useState("Thu, Oct 15");
  const [returning, setReturning] = useState("");
  const [status, setStatus] = useState<{ error: boolean; text: string } | null>(
    null,
  );

  function search() {
    if (!from.trim() || !to.trim()) {
      setStatus({ error: true, text: "Add both an origin and a destination." });
      return;
    }
    if (from.trim().toLowerCase() === to.trim().toLowerCase()) {
      setStatus({ error: true, text: "Origin and destination can't match." });
      return;
    }
    const dates = [depart.trim() || "any date", returning.trim() || "one way"];
    setStatus({
      error: false,
      text: `Searching ${from.trim()} to ${to.trim()} · ${dates.join(" · ")}`,
    });
  }

  return (
    <form
      aria-label="Search flights"
      className="flex w-full max-w-sm flex-col gap-3"
      onSubmit={(event) => {
        event.preventDefault();
        search();
      }}
    >
      <div className="relative flex flex-col gap-3">
        <InsetField
          id={`${id}-from`}
          label="From"
          value={from}
          placeholder="City or airport"
          className="pr-10"
          onChange={(event) => {
            setFrom(event.target.value);
            setStatus(null);
          }}
        />
        <InsetField
          id={`${id}-to`}
          label="To"
          value={to}
          placeholder="City or airport"
          className="pr-10"
          onChange={(event) => {
            setTo(event.target.value);
            setStatus(null);
          }}
        />
        <Button
          type="button"
          variant="outline"
          size="icon-sm"
          aria-label="Swap origin and destination"
          className="absolute inset-y-0 right-3 my-auto rounded-full bg-background dark:bg-background"
          onClick={() => {
            setFrom(to);
            setTo(from);
            setStatus(null);
          }}
        >
          <ArrowUpDownIcon aria-hidden="true" />
        </Button>
      </div>
      <div className="grid grid-cols-2 gap-3">
        <InsetField
          id={`${id}-depart`}
          label="Depart"
          value={depart}
          onChange={(event) => {
            setDepart(event.target.value);
            setStatus(null);
          }}
        />
        <InsetField
          id={`${id}-return`}
          label="Return"
          value={returning}
          placeholder="One way"
          onChange={(event) => {
            setReturning(event.target.value);
            setStatus(null);
          }}
        />
      </div>
      <Button type="submit" size="lg" className="mt-1 w-full">
        <SearchIcon aria-hidden="true" />
        Search flights
      </Button>
      <p
        role="status"
        className={
          status?.error
            ? "min-h-5 text-center text-sm text-destructive"
            : "min-h-5 text-center text-sm text-muted-foreground"
        }
      >
        {status?.text}
      </p>
    </form>
  );
}

TSX
"use client";

import { useId, useState } from "react";
import { ListFilterIcon, XIcon } from "lucide-react";

import {
  InputGroup,
  InputGroupAddon,
  InputGroupButton,
  InputGroupInput,
} from "@/components/ui/input-group";
import { Label } from "@/components/ui/label";

type Filter = { key: FilterKey; value: string };
type FilterKey = "status" | "assignee" | "label";

const issues = [
  { id: "NW-412", title: "Invoice PDF cuts off the tax line", status: "open", assignee: "maya", label: "bug" },
  { id: "NW-409", title: "Add SSO for the billing portal", status: "open", assignee: "diego", label: "feature" },
  { id: "NW-398", title: "Retry failed card charges nightly", status: "in-review", assignee: "maya", label: "feature" },
  { id: "NW-391", title: "Export button ignores date range", status: "open", assignee: "priya", label: "bug" },
  { id: "NW-377", title: "Dunning emails go out twice", status: "closed", assignee: "diego", label: "bug" },
];

const keys: { key: FilterKey; hint: string }[] = [
  { key: "status", hint: "open, in-review, closed" },
  { key: "assignee", hint: "maya, diego, priya" },
  { key: "label", hint: "bug, feature" },
];

const TOKEN_PATTERN = /^(status|assignee|label):(\S+)$/i;

export default function InputGroup09() {
  const id = useId();
  const [filters, setFilters] = useState<Filter[]>([
    { key: "status", value: "open" },
    { key: "label", value: "bug" },
  ]);
  const [draft, setDraft] = useState("");

  const words = draft.trim().toLowerCase();
  const results = issues.filter(
    (issue) =>
      filters.every((filter) => issue[filter.key] === filter.value) &&
      (!words || issue.title.toLowerCase().includes(words)),
  );

  // "status:open" followed by a space turns into a token.
  function handleChange(value: string) {
    const parts = value.split(" ");
    const last = parts.length > 1 ? parts[parts.length - 2] : "";
    const match = last.match(TOKEN_PATTERN);
    if (value.endsWith(" ") && match) {
      const key = match[1].toLowerCase() as FilterKey;
      const next = { key, value: match[2].toLowerCase() };
      setFilters((current) => [
        ...current.filter((filter) => filter.key !== key),
        next,
      ]);
      setDraft(parts.slice(0, -2).join(" "));
      return;
    }
    setDraft(value);
  }

  function removeFilter(key: FilterKey) {
    setFilters((current) => current.filter((filter) => filter.key !== key));
  }

  return (
    <div className="flex w-full max-w-md flex-col gap-2">
      <Label htmlFor={`${id}-query`}>Filter issues</Label>
      <InputGroup className="h-auto min-h-8 flex-wrap gap-1 py-1 pr-1">
        <InputGroupAddon className="py-0">
          <ListFilterIcon aria-hidden="true" />
        </InputGroupAddon>
        <ul aria-label="Active filters" className="contents">
          {filters.map((filter) => (
            <li
              key={filter.key}
              className="flex h-6 max-w-full items-center overflow-hidden rounded-md border border-border text-xs"
            >
              <span className="bg-muted px-1.5 py-0.5 text-muted-foreground">
                {filter.key}
              </span>
              <span className="truncate px-1.5 font-medium">{filter.value}</span>
              <InputGroupButton
                size="icon-xs"
                className="size-6 rounded-none"
                aria-label={`Remove ${filter.key} filter`}
                onClick={() => removeFilter(filter.key)}
              >
                <XIcon aria-hidden="true" />
              </InputGroupButton>
            </li>
          ))}
        </ul>
        <InputGroupInput
          id={`${id}-query`}
          value={draft}
          placeholder={filters.length ? "Search titles" : "Try label:bug"}
          autoComplete="off"
          spellCheck={false}
          aria-describedby={`${id}-query-hint ${id}-query-count`}
          className="h-6 min-w-28 px-1.5"
          onChange={(event) => handleChange(event.target.value)}
          onKeyDown={(event) => {
            if (event.key === "Backspace" && !draft && filters.length) {
              removeFilter(filters[filters.length - 1].key);
            }
          }}
        />
      </InputGroup>
      <p id={`${id}-query-hint`} className="text-xs text-muted-foreground">
        Type{" "}
        {keys.map((item, index) => (
          <span key={item.key}>
            <code className="font-mono text-foreground">{item.key}:</code>
            <span className="sr-only"> ({item.hint})</span>
            {index < keys.length - 1 ? ", " : ""}
          </span>
        ))}{" "}
        then a value and a space. Backspace removes the last filter.
      </p>
      <div className="mt-1 rounded-lg border border-border">
        <p
          id={`${id}-query-count`}
          aria-live="polite"
          className="border-b border-border px-3 py-2 text-xs text-muted-foreground tabular-nums"
        >
          {results.length} of {issues.length} issues
        </p>
        {results.length ? (
          <ul className="divide-y divide-border">
            {results.map((issue) => (
              <li key={issue.id} className="flex items-baseline gap-3 px-3 py-2">
                <span className="shrink-0 font-mono text-xs text-muted-foreground">
                  {issue.id}
                </span>
                <span className="min-w-0 truncate text-sm">{issue.title}</span>
              </li>
            ))}
          </ul>
        ) : (
          <p className="px-3 py-4 text-sm text-muted-foreground">
            No issues match. Remove a filter to widen the search.
          </p>
        )}
      </div>
    </div>
  );
}

TSX
"use client";

import { useId, useState } from "react";
import { ArrowRightLeftIcon, ChevronDownIcon } from "lucide-react";

import {
  DropdownMenu,
  DropdownMenuContent,
  DropdownMenuGroup,
  DropdownMenuLabel,
  DropdownMenuRadioGroup,
  DropdownMenuRadioItem,
  DropdownMenuTrigger,
} from "@/components/ui/dropdown-menu";
import {
  InputGroup,
  InputGroupAddon,
  InputGroupButton,
  InputGroupInput,
  InputGroupText,
} from "@/components/ui/input-group";
import { Label } from "@/components/ui/label";

// Static sample rates, USD per 1 unit of each currency.
const currencies = [
  { code: "USD", name: "US dollar", symbol: "$", rate: 1 },
  { code: "EUR", name: "Euro", symbol: "€", rate: 1.09 },
  { code: "GBP", name: "British pound", symbol: "£", rate: 1.27 },
  { code: "JPY", name: "Japanese yen", symbol: "¥", rate: 0.0067 },
] as const;

type CurrencyCode = (typeof currencies)[number]["code"];

function getCurrency(code: CurrencyCode) {
  return currencies.find((currency) => currency.code === code) ?? currencies[0];
}

export default function InputGroup10() {
  const id = useId();
  const [code, setCode] = useState<CurrencyCode>("EUR");
  const [amount, setAmount] = useState("2,500.00");

  const currency = getCurrency(code);
  const numeric = Number.parseFloat(amount.replace(/,/g, ""));
  const inUsd = Number.isFinite(numeric)
    ? new Intl.NumberFormat("en-US", {
        style: "currency",
        currency: "USD",
      }).format(numeric * currency.rate)
    : "—";

  return (
    <div className="flex w-full max-w-sm flex-col gap-2">
      <Label htmlFor={`${id}-amount`}>Invoice amount</Label>
      <InputGroup>
        <InputGroupAddon>
          <DropdownMenu>
            <DropdownMenuTrigger
              render={
                <InputGroupButton
                  variant="ghost"
                  aria-label={`${currency.code}, change currency`}
                  className="font-medium"
                />
              }
            >
              {currency.code}
              <ChevronDownIcon aria-hidden="true" />
            </DropdownMenuTrigger>
            <DropdownMenuContent className="w-52">
              <DropdownMenuGroup>
                <DropdownMenuLabel>Billing currency</DropdownMenuLabel>
                <DropdownMenuRadioGroup
                  value={code}
                  onValueChange={(value) => setCode(value as CurrencyCode)}
                >
                  {currencies.map((option) => (
                    <DropdownMenuRadioItem
                      key={option.code}
                      value={option.code}
                      closeOnClick
                    >
                      <span className="w-4 text-muted-foreground">
                        {option.symbol}
                      </span>
                      {option.name}
                      <span className="ml-auto text-xs text-muted-foreground">
                        {option.code}
                      </span>
                    </DropdownMenuRadioItem>
                  ))}
                </DropdownMenuRadioGroup>
              </DropdownMenuGroup>
            </DropdownMenuContent>
          </DropdownMenu>
          <InputGroupText aria-hidden="true" className="-mr-1 border-l pl-2">
            {currency.symbol}
          </InputGroupText>
        </InputGroupAddon>
        <InputGroupInput
          id={`${id}-amount`}
          inputMode="decimal"
          value={amount}
          aria-describedby={`${id}-amount-converted`}
          className="tabular-nums"
          onChange={(event) =>
            setAmount(event.target.value.replace(/[^\d.,]/g, ""))
          }
        />
      </InputGroup>
      <p
        id={`${id}-amount-converted`}
        aria-live="polite"
        className="flex items-center gap-1.5 text-sm text-muted-foreground"
      >
        <ArrowRightLeftIcon aria-hidden="true" className="size-3.5" />
        <span>
          About <span className="font-medium text-foreground tabular-nums">{inUsd}</span>{" "}
          at today’s sample rate
        </span>
      </p>
    </div>
  );
}

TSX
"use client";

import { useId, useState } from "react";
import { TagIcon, XIcon } from "lucide-react";

import {
  InputGroup,
  InputGroupAddon,
  InputGroupButton,
  InputGroupInput,
} from "@/components/ui/input-group";
import { Separator } from "@/components/ui/separator";

const lines = [
  { id: "tote", name: "Waxed canvas tote", detail: "Olive · 1", price: 128 },
  { id: "strap", name: "Leather shoulder strap", detail: "Tan · 1", price: 42 },
];

const codes: Record<string, { label: string; percent: number }> = {
  WELCOME10: { label: "10% off your first order", percent: 10 },
  FALL25: { label: "25% off fall collection", percent: 25 },
};

const SHIPPING = 8;

function formatMoney(value: number) {
  return `$${value.toFixed(2)}`;
}

export default function InputGroup11() {
  const inputId = useId();
  const messageId = useId();
  const [draft, setDraft] = useState("");
  const [applied, setApplied] = useState<string | null>(null);
  const [error, setError] = useState<string | null>(null);

  const subtotal = lines.reduce((sum, line) => sum + line.price, 0);
  const discount = applied
    ? Math.round(subtotal * codes[applied].percent) / 100
    : 0;
  const total = subtotal - discount + SHIPPING;

  function apply() {
    const code = draft.trim().toUpperCase();
    if (!code) {
      setError("Enter a promo code first.");
      return;
    }
    if (!codes[code]) {
      setError(`"${code}" isn't a valid code or has expired.`);
      return;
    }
    setApplied(code);
    setDraft("");
    setError(null);
  }

  return (
    <div className="w-full max-w-sm rounded-xl border border-border bg-card p-5">
      <h3 className="font-semibold">Order summary</h3>
      <ul className="mt-4 flex flex-col gap-3">
        {lines.map((line) => (
          <li key={line.id} className="flex items-start justify-between gap-3">
            <div className="min-w-0">
              <p className="truncate text-sm font-medium">{line.name}</p>
              <p className="text-xs text-muted-foreground">{line.detail}</p>
            </div>
            <span className="text-sm tabular-nums">
              {formatMoney(line.price)}
            </span>
          </li>
        ))}
      </ul>
      <Separator className="my-4" />
      <form
        className="flex flex-col gap-2"
        onSubmit={(event) => {
          event.preventDefault();
          apply();
        }}
      >
        <label htmlFor={inputId} className="text-sm font-medium">
          Promo code
        </label>
        <InputGroup>
          <InputGroupAddon>
            <TagIcon aria-hidden="true" />
          </InputGroupAddon>
          <InputGroupInput
            id={inputId}
            value={draft}
            placeholder="e.g. WELCOME10"
            autoComplete="off"
            spellCheck={false}
            className="uppercase placeholder:normal-case"
            aria-invalid={error ? true : undefined}
            aria-describedby={messageId}
            onChange={(event) => {
              setDraft(event.target.value);
              if (error) setError(null);
            }}
          />
          <InputGroupAddon align="inline-end">
            <InputGroupButton type="submit" variant="secondary">
              Apply
            </InputGroupButton>
          </InputGroupAddon>
        </InputGroup>
        <div id={messageId} aria-live="polite">
          {error ? (
            <p className="text-sm text-destructive">{error}</p>
          ) : applied ? (
            <div className="flex items-center justify-between gap-2 rounded-md bg-muted/60 py-1 pr-1 pl-2.5 text-sm">
              <span className="min-w-0 truncate">
                <span className="font-medium">{applied}</span>
                <span className="text-muted-foreground">
                  {" "}
                  · {codes[applied].label}
                </span>
              </span>
              <button
                type="button"
                aria-label={`Remove code ${applied}`}
                onClick={() => setApplied(null)}
                className="grid size-6 shrink-0 place-items-center rounded-sm text-muted-foreground outline-none hover:bg-background hover:text-foreground focus-visible:ring-2 focus-visible:ring-ring"
              >
                <XIcon aria-hidden="true" className="size-3.5" />
              </button>
            </div>
          ) : (
            <p className="text-xs text-muted-foreground">
              Try WELCOME10 or FALL25. One code per order.
            </p>
          )}
        </div>
      </form>
      <Separator className="my-4" />
      <dl className="flex flex-col gap-2 text-sm">
        <div className="flex justify-between">
          <dt className="text-muted-foreground">Subtotal</dt>
          <dd className="tabular-nums">{formatMoney(subtotal)}</dd>
        </div>
        {applied ? (
          <div className="flex justify-between">
            <dt className="text-muted-foreground">Discount</dt>
            <dd className="text-success tabular-nums">
              −{formatMoney(discount)}
            </dd>
          </div>
        ) : null}
        <div className="flex justify-between">
          <dt className="text-muted-foreground">Shipping</dt>
          <dd className="tabular-nums">{formatMoney(SHIPPING)}</dd>
        </div>
        <div className="mt-1 flex justify-between border-t border-border pt-3 font-semibold">
          <dt>Total</dt>
          <dd className="tabular-nums">{formatMoney(total)}</dd>
        </div>
      </dl>
    </div>
  );
}

TSX
"use client";

import { useEffect, useId, useRef, useState } from "react";
import { CheckIcon, XIcon } from "lucide-react";

import { Button } from "@/components/ui/button";
import {
  InputGroup,
  InputGroupAddon,
  InputGroupInput,
  InputGroupText,
} from "@/components/ui/input-group";
import { Spinner } from "@/components/ui/spinner";

const takenSlugs = ["acme", "northwind", "studio", "design", "team"];

type Step = 1 | 2 | 3;

type Status = "idle" | "checking" | "available" | "taken" | "invalid";

function toSlug(value: string) {
  return value
    .toLowerCase()
    .replace(/[^a-z0-9-]+/g, "-")
    .replace(/-{2,}/g, "-")
    .slice(0, 32);
}

export default function InputGroup12() {
  const inputId = useId();
  const hintId = useId();
  const nameId = useId();
  const headingRef = useRef<HTMLHeadingElement>(null);
  const [step, setStep] = useState<Step>(2);
  const [name, setName] = useState("Northwind Labs");
  const [slug, setSlug] = useState("northwind-labs");
  const [status, setStatus] = useState<Status>("idle");

  useEffect(() => {
    const value = slug.replace(/^-|-$/g, "");
    if (!value) {
      setStatus("idle");
      return;
    }
    if (value.length < 3) {
      setStatus("invalid");
      return;
    }
    setStatus("checking");
    // Simulated availability lookup; cleared whenever the slug changes.
    const timer = setTimeout(() => {
      setStatus(takenSlugs.includes(value) ? "taken" : "available");
    }, 450);
    return () => clearTimeout(timer);
  }, [slug]);

  const hint: Record<Status, string> = {
    idle: "Lowercase letters, numbers, and hyphens.",
    checking: "Checking availability…",
    available: `relay.so/${slug.replace(/^-|-$/g, "")} is yours to claim.`,
    taken: "That URL is already taken. Try adding your city or team.",
    invalid: "Use at least 3 characters.",
  };

  const isError = status === "taken" || status === "invalid";

  const clean = slug.replace(/^-|-$/g, "");

  function goTo(next: Step) {
    setStep(next);
    // Move focus to the new step's heading so keyboard and screen reader
    // users land on the content that just replaced the old step.
    requestAnimationFrame(() => headingRef.current?.focus());
  }

  return (
    <form
      className="w-full max-w-md rounded-xl border border-border bg-card p-6"
      onSubmit={(event) => {
        event.preventDefault();
        if (step === 1 && name.trim()) {
          setSlug(toSlug(name.trim()));
          goTo(2);
        }
        if (step === 2 && status === "available") goTo(3);
      }}
    >
      <div
        role="img"
        aria-label={`Step ${step} of 3`}
        className="flex gap-1.5"
      >
        {[1, 2, 3].map((item) => (
          <span
            key={item}
            className={
              item <= step
                ? "h-1 flex-1 rounded-full bg-primary"
                : "h-1 flex-1 rounded-full bg-muted"
            }
          />
        ))}
      </div>
      <h3
        ref={headingRef}
        tabIndex={-1}
        className="mt-5 text-lg font-semibold tracking-tight outline-none"
      >
        {step === 1
          ? "Name your workspace"
          : step === 2
            ? "Pick your workspace URL"
            : "Your workspace is ready"}
      </h3>
      <p className="mt-1 text-sm text-muted-foreground">
        {step === 1
          ? "Use your company or team name. Teammates see it on every invite."
          : step === 2
            ? "Teammates use this link to sign in. You can change it later in settings."
            : `${name.trim()} lives at relay.so/${clean}. Share the link to invite your team.`}
      </p>
      {step === 1 ? (
        <div className="mt-5 flex flex-col gap-2">
          <label htmlFor={nameId} className="text-sm font-medium">
            Workspace name
          </label>
          <InputGroup>
            <InputGroupInput
              id={nameId}
              value={name}
              autoComplete="organization"
              onChange={(event) => setName(event.target.value)}
            />
          </InputGroup>
        </div>
      ) : null}
      {step === 2 ? (
        <div className="mt-5 flex flex-col gap-2">
          <label htmlFor={inputId} className="text-sm font-medium">
            Workspace URL
          </label>
          <InputGroup>
            <InputGroupAddon>
              <InputGroupText>relay.so/</InputGroupText>
            </InputGroupAddon>
            <InputGroupInput
              id={inputId}
              value={slug}
              autoComplete="off"
              spellCheck={false}
              className="pl-0.5!"
              aria-invalid={isError ? true : undefined}
              aria-describedby={hintId}
              onChange={(event) => setSlug(toSlug(event.target.value))}
            />
            <InputGroupAddon align="inline-end">
              {status === "checking" ? (
                <Spinner aria-hidden="true" role="presentation" />
              ) : null}
              {status === "available" ? (
                <CheckIcon aria-hidden="true" className="text-success" />
              ) : null}
              {isError ? (
                <XIcon aria-hidden="true" className="text-destructive" />
              ) : null}
            </InputGroupAddon>
          </InputGroup>
          <p
            id={hintId}
            aria-live="polite"
            className={
              isError
                ? "text-sm text-destructive"
                : "text-sm text-muted-foreground"
            }
          >
            {hint[status]}
          </p>
        </div>
      ) : null}
      <div className="mt-6 flex items-center justify-between gap-3">
        {step > 1 ? (
          <Button
            type="button"
            variant="ghost"
            onClick={() => goTo(step === 3 ? 2 : 1)}
          >
            Back
          </Button>
        ) : (
          <span />
        )}
        {/* Distinct keys keep React from reusing one <button> for both: a
            reused element would flip to type="submit" mid-click and submit. */}
        {step === 3 ? (
          <Button
            key="start-over"
            type="button"
            variant="outline"
            onClick={() => {
              setName("Northwind Labs");
              setSlug("northwind-labs");
              goTo(1);
            }}
          >
            Start over
          </Button>
        ) : (
          <Button
            key="continue"
            type="submit"
            disabled={step === 1 ? !name.trim() : status !== "available"}
          >
            Continue
          </Button>
        )}
      </div>
    </form>
  );
}