/* Global product identity and primary route navigation. */
.site-header {
  position: relative;
  z-index: 10;
  background: transparent;
}

@scope (.site-header) {
  nav {
    display: flex;
    min-height: var(--space-17);
    align-items: center;
    justify-content: flex-start;
    gap: var(--space-10);
  }

  nav > div {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: clamp(var(--space-7), 4vw, var(--space-13));
  }

  nav > div a {
    color: var(--color-text-muted);
    font-size: var(--font-size-md);
    font-weight: 750;
    text-decoration-color: transparent;
    text-underline-offset: var(--underline-offset-wide);
    white-space: nowrap;
  }

  nav > div a:hover,
  nav > div a[aria-current="page"] {
    color: var(--color-accent-strong);
    text-decoration-color: currentColor;
  }

  nav > a:first-child {
    display: inline-flex;
    flex: 0 0 auto;
    align-items: center;
    gap: var(--space-4);
    color: var(--color-heading);
    font-size: var(--font-size-lg);
    font-weight: 800;
    letter-spacing: var(--letter-spacing-tight);
    text-decoration: none;
  }

  nav > a:first-child > span[aria-hidden="true"] {
    display: grid;
    width: 2.125rem;
    height: 2.125rem;
    place-items: center;
    border: var(--border-width) solid var(--color-border-strong);
    border-radius: 50% 50% 45% 55%;
    background: var(--color-surface-muted);
    color: var(--color-accent-strong);
    box-shadow: var(--space-1) var(--space-1) 0 var(--color-flower-soft);
    transform: rotate(-7deg);
  }

  nav > span {
    display: inline-flex;
    min-width: 0;
    align-items: center;
    gap: var(--space-4);
    color: var(--color-text-muted);
    font-size: var(--font-size-md);
    font-weight: 750;
    white-space: nowrap;
  }

  nav > span > a {
    color: var(--color-accent-strong);
    text-decoration-line: underline;
    text-underline-offset: var(--underline-offset-wide);
  }
}

@media (max-width: 640px) {
  @scope (.site-header) {
    nav {
      min-height: 0;
      flex-wrap: wrap;
      gap: var(--space-3) var(--space-5);
      padding-block: var(--space-6);
    }

    nav > div {
      flex-wrap: nowrap;
      justify-content: flex-start;
      gap: var(--space-4) var(--space-6);
    }

    nav > div a {
      font-size: var(--font-size-sm);
    }

    nav > span {
      flex-basis: 100%;
      font-size: var(--font-size-sm);
    }

    nav > a:first-child {
      padding-inline-end: var(--space-1);
    }

    nav > a:first-child > span:last-child {
      display: none;
    }
  }
}