@layer navigation {
  .c-site-header {
    background: var(--color-surface-page);
  }

  .c-site-header__inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto auto;
    align-items: center;
    gap: 0 .375rem;
    min-height: 4.375rem;
    padding-block: .5rem;
  }

  .c-site-brand {
    justify-self: start;
    max-inline-size: 100%;
    min-block-size: 2.75rem;
  }

  .c-site-brand__logo.c-brand-image--library {
    inline-size: clamp(7.5rem, 45vw, 10rem);
    max-inline-size: 100%;
    block-size: auto;
    max-block-size: 3.5rem;
    padding: .2rem;
    background: transparent;
  }

  [data-theme="dark"] .c-site-brand__logo.c-brand-image--library {
    background: var(--igzm-paper);
  }

  .c-site-brand__name {
    line-height: 1.28;
  }

  .c-site-header .c-menu-toggle {
    grid-column: 2;
    order: 0;
    margin: 0;
    padding: .4rem .6rem;
    gap: .35rem;
    font-size: .825rem;
    cursor: pointer;
  }

  .has-js .c-site-header .c-menu-toggle {
    display: inline-flex;
  }

  .c-site-header .c-theme-control {
    grid-area: 1 / 3;
    order: 0;
    margin: 0;
  }

  .c-site-header .c-theme-toggle {
    inline-size: 2.75rem;
  }

  .c-site-header :is(.c-menu-toggle, .c-theme-toggle):hover,
  .c-site-header .c-menu-toggle[aria-expanded="true"] {
    background: var(--color-surface-subtle);
  }

  .c-site-header .c-primary-navigation {
    grid-area: 2 / 1 / 3 / -1;
    order: 0;
    inline-size: 100%;
    max-block-size: min(70svh, 32rem);
    overflow-y: auto;
    overscroll-behavior: contain;
    padding-block: .5rem .25rem;
  }

  .has-js .c-site-header .c-primary-navigation:not([data-open]) {
    display: none;
  }

  .c-site-header .c-primary-menu {
    display: grid;
    gap: 0;
    border-block-start: 1px solid var(--color-border);
  }

  .c-site-header .c-primary-menu li {
    min-inline-size: 0;
    border-block-end: 1px solid var(--color-border);
  }

  .c-site-header .c-primary-menu a {
    inline-size: 100%;
    min-block-size: 2.875rem;
    font-weight: 650;
    color: var(--color-text-primary);
    overflow-wrap: anywhere;
  }

  .c-site-header .c-primary-menu a:is(:hover, [aria-current]) {
    color: var(--color-action-hover);
    text-decoration: underline;
    text-decoration-thickness: .08em;
    text-underline-offset: .3em;
  }

  .c-site-header .c-primary-menu a:focus-visible {
    outline-offset: -.16rem;
  }

  .c-site-header a.c-primary-navigation__join {
    justify-content: center;
    gap: .5rem;
    inline-size: 100%;
    min-block-size: 2.75rem;
    margin-block-start: .625rem;
    padding-inline: .8rem;
    border: 1px solid var(--color-border);
    border-radius: .375rem;
    font-weight: 750;
    color: var(--color-text-primary);
    white-space: nowrap;
  }

  .c-primary-navigation__join svg {
    flex: none;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
  }

  .c-site-header a.c-primary-navigation__join:is(:hover, [aria-current]) {
    background: var(--color-surface-subtle);
    border-color: var(--color-action-hover);
    text-decoration: none;
  }

  @media (min-width: 601px) {
    .admin-bar .c-site-header {
      top: var(--wp-admin--admin-bar--height, 32px);
    }
  }

  @media (min-width: 64rem) {
    .c-site-header__inner {
      grid-template-columns: auto minmax(0, 1fr) auto;
      gap: clamp(.625rem, 1.8vw, 1.75rem);
      min-height: 4.625rem;
    }

    .c-site-brand__logo.c-brand-image--library {
      inline-size: clamp(9.5rem, 13vw, 11.25rem);
    }

    .has-js .c-site-header .c-menu-toggle {
      display: none;
    }

    .c-site-header .c-primary-navigation,
    .has-js .c-site-header .c-primary-navigation:not([data-open]) {
      display: flex;
      grid-area: 1 / 2;
      align-items: center;
      justify-content: flex-end;
      gap: clamp(.75rem, 2vw, 1.75rem);
      max-block-size: none;
      overflow: visible;
      padding: 0;
    }

    .c-site-header .c-primary-menu {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: flex-end;
      gap: .25rem clamp(.75rem, 1.9vw, 1.75rem);
      border: 0;
    }

    .c-site-header .c-primary-menu li {
      border: 0;
    }

    .c-site-header .c-primary-menu a {
      line-height: 1.25;
    }

    .c-site-header a.c-primary-navigation__join {
      flex: none;
      inline-size: auto;
      margin: 0;
    }
  }
}