Startup footer

import Link from 'next/link'
import { ArrowRight } from 'lucide-react'
import { ButtonLink } from '@/components/ui/button'
import { Container } from '@/components/ui/layout'
import { BrandMark } from '@/components/library/brand'

/**
 * Startup footer
 *
 * A closing call to action folded into the footer, so the last thing on the
 * page is an invitation rather than a sitemap. The link row is deliberately
 * short: an early-stage site with fourteen footer links is describing a
 * company that does not exist yet.
 */
const links = [
  { label: 'Product', href: '/starters/startup/preview/product' },
  { label: 'Pricing', href: '/starters/startup/preview/pricing' },
  { label: 'Customers', href: '/starters/startup/preview/customers' },
  { label: 'Blog', href: '/starters/startup/preview/blog' },
  { label: 'Contact', href: '/starters/startup/preview/contact' },
]

export default function StartupFooter() {
  return (
    <footer className="border-t border-line bg-canvas">
      <Container className="py-14">
        <div className="rounded-xl border border-accent-line bg-accent-soft p-8 sm:p-10">
          <h2 className="display-type max-w-lg text-2xl leading-tight font-semibold text-accent-soft-ink sm:text-3xl">
            Build the first version this week.
          </h2>
          <p className="mt-3 max-w-md text-sm text-accent-soft-ink/85">
            Ten starter products, all assembled from the same components you will keep using.
          </p>
          <ButtonLink
            href="/starters"
            className="mt-6"
            trailingIcon={<ArrowRight className="size-4" />}
          >
            Browse starters
          </ButtonLink>
        </div>

        <div className="mt-10 flex flex-col gap-4 sm:flex-row sm:items-center sm:justify-between">
          <div className="flex items-center gap-2 text-ink-muted">
            <BrandMark className="size-4 text-accent" />
            <span className="text-sm">Foundry — fictional, but the code is real</span>
          </div>
          <nav aria-label="Footer">
            <ul className="flex flex-wrap gap-x-5 gap-y-2">
              {links.map((link) => (
                <li key={link.href}>
                  <Link
                    href={link.href}
                    className="text-sm text-ink-muted transition-colors hover:text-accent"
                  >
                    {link.label}
                  </Link>
                </li>
              ))}
            </ul>
          </nav>
        </div>
      </Container>
    </footer>
  )
}

import type { ButtonHTMLAttributes, ReactNode } from 'react'
import Link from 'next/link'
import { cn } from '@/lib/cn'
import { variants } from '@/lib/variants'
import { Spinner } from './spinner'

/**
 * Button
 *
 * The whole action surface of Foundry in one component. It is intentionally a
 * *shared* component (no `'use client'`): rendered from a Server Component it
 * ships zero JavaScript, and it upgrades to a client island automatically when
 * a Client Component imports it.
 *
 * Height, padding and radius resolve from density and radius tokens, so a
 * button restyles itself when the density or palette axis changes. Focus is
 * handled once, globally, by the `:focus-visible` rule in `globals.css`.
 */
const buttonVariants = variants(
  cn(
    'relative inline-flex items-center justify-center gap-2 whitespace-nowrap font-medium',
    'transition-colors duration-150 ease-standard select-none',
    'disabled:pointer-events-none disabled:opacity-50',
    'aria-disabled:pointer-events-none aria-disabled:opacity-50',
  ),
  {
    variants: {
      variant: {
        primary: 'bg-accent text-accent-ink hover:bg-accent-hover active:bg-accent-active',
        secondary: 'bg-surface-inverse text-ink-inverse hover:opacity-90 active:opacity-80',
        outline: 'border border-line-strong bg-surface text-ink hover:bg-surface-sunken',
        ghost: 'text-ink hover:bg-surface-sunken active:bg-surface-sunken',
        destructive: 'bg-danger text-white hover:opacity-90 active:opacity-80',
        success: 'bg-success text-white hover:opacity-90 active:opacity-80',
        warning: 'bg-warning text-white hover:opacity-90 active:opacity-80',
        link: 'text-accent underline underline-offset-4 hover:text-accent-hover',
        soft: 'bg-accent-soft text-accent-soft-ink border border-accent-line hover:brightness-[0.97]',
      },
      size: {
        sm: 'h-control-sm px-3 text-xs rounded-md',
        md: 'h-control px-[var(--density-control-padding-x)] text-sm rounded-md',
        lg: 'h-control-lg px-5 text-base rounded-md',
        icon: 'h-control w-control p-0 rounded-md',
        'icon-sm': 'h-control-sm w-control-sm p-0 rounded-sm',
      },
      block: { true: 'w-full', false: '' },
    },
    defaultVariants: { variant: 'primary', size: 'md', block: false },
    compound: [
      { variant: 'link', size: 'sm', class: 'h-auto px-0' },
      { variant: 'link', size: 'md', class: 'h-auto px-0' },
      { variant: 'link', size: 'lg', class: 'h-auto px-0' },
    ],
  },
)

export type ButtonVariant =
  | 'primary'
  | 'secondary'
  | 'outline'
  | 'ghost'
  | 'destructive'
  | 'success'
  | 'warning'
  | 'link'
  | 'soft'

export type ButtonSize = 'sm' | 'md' | 'lg' | 'icon' | 'icon-sm'

export interface ButtonProps extends ButtonHTMLAttributes<HTMLButtonElement> {
  variant?: ButtonVariant
  size?: ButtonSize
  block?: boolean
  /** Swaps content for a spinner while preserving the button's measured width. */
  loading?: boolean
  /** Announced by assistive tech while `loading` is true. */
  loadingLabel?: string
  leadingIcon?: ReactNode
  trailingIcon?: ReactNode
}

export function Button({
  variant = 'primary',
  size = 'md',
  block = false,
  loading = false,
  loadingLabel = 'Working',
  leadingIcon,
  trailingIcon,
  className,
  children,
  disabled,
  type = 'button',
  ...props
}: ButtonProps) {
  return (
    <button
      type={type}
      className={buttonVariants({ variant, size, block, className })}
      disabled={disabled ?? loading}
      aria-busy={loading || undefined}
      {...props}
    >
      {loading ? (
        <>
          {/* Label stays in the DOM but hidden so the control never collapses
              to spinner width halfway through an interaction. */}
          <span className="invisible flex items-center gap-2" aria-hidden="true">
            {leadingIcon}
            {children}
            {trailingIcon}
          </span>
          <span className="absolute inset-0 flex items-center justify-center">
            <Spinner size="sm" />
            <span className="sr-only">{loadingLabel}</span>
          </span>
        </>
      ) : (
        <>
          {leadingIcon}
          {children}
          {trailingIcon}
        </>
      )}
    </button>
  )
}

export interface ButtonLinkProps {
  href: string
  variant?: ButtonVariant
  size?: ButtonSize
  block?: boolean
  className?: string
  children?: ReactNode
  leadingIcon?: ReactNode
  trailingIcon?: ReactNode
  'aria-label'?: string
  'aria-current'?: 'page' | 'step' | 'true' | undefined
  target?: string
  rel?: string
  prefetch?: boolean
}

/** Anchor styled as a button, for when the action is really navigation. */
export function ButtonLink({
  href,
  variant = 'primary',
  size = 'md',
  block = false,
  className,
  children,
  leadingIcon,
  trailingIcon,
  ...props
}: ButtonLinkProps) {
  return (
    <Link href={href} className={buttonVariants({ variant, size, block, className })} {...props}>
      {leadingIcon}
      {children}
      {trailingIcon}
    </Link>
  )
}

export { buttonVariants }