opencode/packages/web/src/components/Header.astro

---
import config from "../../config.mjs"
import astroConfig from "virtual:starlight/user-config"
import { getRelativeLocaleUrl } from "astro:i18n"
import { Icon } from "@astrojs/starlight/components"
import Default from "toolbeam-docs-theme/overrides/Header.astro"
import SiteTitle from "@astrojs/starlight/components/SiteTitle.astro"

const path = Astro.url.pathname
const locale = Astro.currentLocale || "root"
const route = Astro.locals.starlightRoute
const t = Astro.locals.t as (key: string) => string
const links = astroConfig.social || []
const headerLinks = config.headerLinks
const sharePath = /\/s(\/|$)/.test(path)

function href(url: string) {
  if (url === "/" || url === "/docs" || url === "/docs/") {
    return getRelativeLocaleUrl(locale, "")
  }
  return url
}
---

{sharePath ? (
  <div class="header sl-flex">
    <div class="title-wrapper sl-flex">
      <SiteTitle {...route} />
    </div>
    <div class="middle-group sl-flex">
      {headerLinks?.map(({ name, url }) => (
        <a class="links" href={href(url)}>{t(name)}</a>
      ))}
    </div>
    <div class="sl-hidden md:sl-flex right-group">
      {links.length > 0 && (
        <div class="sl-flex social-icons">
          {links.map(({ href, icon }) => (
            <a {href} rel="me" target="_blank">
              <Icon name={icon} size="1rem" />
            </a>
          ))}
        </div>
      )}
    </div>
  </div>
) : (
  <Default {...route} />
)}

<style>
  .header {
    gap: var(--sl-nav-gap);
    justify-content: space-between;
    align-items: center;
    height: 100%;
  }

  .title-wrapper {
    /* Prevent long titles overflowing and covering the search and menu buttons on narrow viewports. */
    overflow: clip;
    /* Avoid clipping focus ring around link inside title wrapper. */
    padding: calc(0.25rem + 2px) 0.25rem calc(0.25rem - 2px);
    margin: -0.25rem;
  }

  .middle-group {
    justify-content: flex-end;
    gap: var(--sl-nav-gap);
  }

  @media (max-width: 50rem) {
    :global(:root[data-has-sidebar]) {
      .middle-group {
        display: none;
      }
    }
  }

  @media (min-width: 50rem) {
    .middle-group {
      display: flex;
    }
  }

  .right-group,
  .social-icons {
    gap: 1rem;
    align-items: center;

    a {
      line-height: 1;

      svg {
        color: var(--sl-color-text-dimmed);
      }
    }

    a.links {
      text-transform: uppercase;
      font-size: var(--sl-text-sm);
      color: var(--sl-color-text-secondary);
      line-height: normal;
    }
  }

  @media (min-width: 50rem) {
    :global(:root[data-has-sidebar]) {
      --__sidebar-pad: calc(2 * var(--sl-nav-pad-x));
    }

    :global(:root:not([data-has-toc])) {
      --__toc-width: 0rem;
    }

    .header {
      --__sidebar-width: max(0rem, var(--sl-content-inline-start, 0rem) - var(--sl-nav-pad-x));
      --__main-column-fr: calc(
        (
            100% + var(--__sidebar-pad, 0rem) - var(--__toc-width, var(--sl-sidebar-width)) -
              (2 * var(--__toc-width, var(--sl-nav-pad-x))) - var(--sl-content-inline-start, 0rem) -
              var(--sl-content-width)
          ) / 2
      );
      display: grid;
      grid-template-columns:
        /* 1 (site title): runs up until the main content column’s left edge or the width of the title, whichever is the largest  */
        minmax(calc(var(--__sidebar-width) + max(0rem, var(--__main-column-fr) - var(--sl-nav-gap))), auto)
        /* 2 (search box): all free space that is available. */
        1fr
        /* 3 (right items): use the space that these need. */
        auto;
      align-content: center;
    }
  }
</style>