---
import Wordmark from './Wordmark.astro';
import { localePath, t, type Lang } from '../i18n/ui';

interface Props { lang: Lang }
const { lang } = Astro.props;
const ui = t(lang);
const home = localePath(lang, '/');
const items = [
  { href: `${home}#capabilities`, label: ui.nav.capabilities },
  { href: localePath(lang, '/cipherverifier'), label: ui.nav.product },
  { href: `${home}#sectors`, label: ui.nav.sectors },
  { href: localePath(lang, '/insights'), label: ui.nav.insights },
  { href: localePath(lang, '/team'), label: ui.nav.team },
];
const contactHref = `${home}#contact`;
const path = Astro.url.pathname.replace(/\/$/, '') || '/';
const isCurrent = (href: string) => href.split('#')[0] === path && !href.includes('#');
---
<header class="header" data-header>
  <div class="container header__inner">
    <a class="header__home" href={home} aria-label={ui.nav.homeLabel}><Wordmark /></a>

    <nav class="header__nav" aria-label="Primary" id="primary-nav">
      <ul class="header__list" role="list">
        {items.map((item) => (
          <li><a href={item.href} aria-current={isCurrent(item.href) ? 'page' : undefined}>{item.label}</a></li>
        ))}
        <li class="header__contact-mobile"><a href={contactHref}>{ui.nav.contact}</a></li>
      </ul>
    </nav>

    <a class="button button--small header__contact" href={contactHref}>{ui.nav.contact}</a>

    <button class="header__toggle" type="button" aria-expanded="false" aria-controls="primary-nav" data-nav-toggle>
      <span data-label-open>{ui.nav.menu}</span>
      <span data-label-close hidden>{ui.nav.close}</span>
    </button>
  </div>
</header>

<style>
  .header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: var(--paper);
    border-bottom: var(--hairline) solid var(--line);
  }
  .header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--gap);
    min-height: var(--header-height);
  }
  .header__home { text-decoration: none; }
  .header__nav { margin-left: auto; }
  .header__list {
    display: flex;
    gap: var(--space-6);
  }
  .header__list a {
    text-decoration: none;
    font-weight: var(--weight-regular);
    padding-block: var(--space-2);
    border-bottom: var(--hairline) solid transparent;
    transition: border-color var(--dur-fast) var(--ease);
  }
  .header__list a:hover,
  .header__list a[aria-current='page'] { border-bottom-color: currentColor; }
  .header__contact { margin-left: var(--space-6); }
  .header__contact-mobile { display: none; }
  .header__toggle {
    display: none;
    font-weight: var(--weight-medium);
    padding: var(--space-2) 0;
  }

  @media (max-width: 47.99rem) {
    .header__contact { display: none; }
    .header__contact-mobile { display: block; }
    .header__toggle { display: inline-block; }
    .header__nav {
      position: absolute;
      inset: 100% 0 auto 0;
      display: none;
      padding: var(--space-5) var(--gutter) var(--space-7);
      background: var(--paper);
      border-bottom: var(--hairline) solid var(--line);
    }
    .header__nav[data-open] { display: block; }
    .header__list { flex-direction: column; gap: 0; }
    .header__list li + li { border-top: var(--hairline) solid var(--line); }
    .header__list a {
      display: block;
      padding-block: var(--space-4);
      font-size: var(--step-h3);
      letter-spacing: var(--track-h3);
      border-bottom: 0;
    }
    .header__list a[aria-current='page'] { font-weight: var(--weight-medium); }
  }
</style>

<script>
  const header = document.querySelector<HTMLElement>('[data-header]');
  const toggle = header?.querySelector<HTMLButtonElement>('[data-nav-toggle]');
  const nav = header?.querySelector<HTMLElement>('#primary-nav');
  if (header && toggle && nav) {
    const open = toggle.querySelector<HTMLElement>('[data-label-open]')!;
    const close = toggle.querySelector<HTMLElement>('[data-label-close]')!;
    const set = (isOpen: boolean) => {
      toggle.setAttribute('aria-expanded', String(isOpen));
      if (isOpen) nav.setAttribute('data-open', ''); else nav.removeAttribute('data-open');
      open.hidden = isOpen;
      close.hidden = !isOpen;
    };
    toggle.addEventListener('click', () => set(toggle.getAttribute('aria-expanded') !== 'true'));
    document.addEventListener('keydown', (e) => { if (e.key === 'Escape') set(false); });
    nav.addEventListener('click', (e) => { if ((e.target as HTMLElement).closest('a')) set(false); });
  }
</script>