#nav {
  align-items: center;
  column-gap: var(--inline-space-half);
  display: flex;
  inset: 0 0 auto 0;
  inset-inline-end: var(--sidebar-width);
  padding-block: var(--block-space);
  padding-inline: calc(var(--inline-space) * 1.5) var(--inline-space-double);
  pointer-events: none;
  position: fixed;
  row-gap: var(--block-space);
  z-index: 2;
  transition: inset-inline-end 300ms cubic-bezier(0.25, 1, 0.5, 1);

  & > * {
    pointer-events: auto;
  }

  &:has(.btn--faux) {
    padding-inline: var(--inline-space);

    @media (min-width: 120ch) {
      margin-inline-start: 5vw;

      .thread-panel-open & {
        margin-inline-start: 0;
      }
    }
  }

  @media (min-width: 120ch) {
    .thread-panel-open & {
      inset-inline-end: calc(var(--sidebar-width) + clamp(300px, 25vw, 420px));
    }
  }

  .sidebar & {
    @media (max-width: 120ch) {
      padding-block: var(--block-space-half);

      &::before {
        background: linear-gradient(180deg,
            oklch(var(--lch-white)) 20%,
            oklch(var(--lch-white) / 0) 100%);
        content: "";
        inset: 0;
        position: absolute;
        z-index: -1;
      }
    }
  }
}


.top-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  font-size: var(--font-size-small);
  text-align: center;

  strong {
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }

  a {
    color: inherit;
    text-decoration: underline;
    font-weight: 600;
    white-space: nowrap;

    &:hover {
      opacity: 0.85;
    }
  }
}

.top-banner--warning {
  background: var(--color-warning, #f59e0b);
  color: var(--color-warning-contrast, #000);
}

.top-banner--error {
  background: var(--color-negative, #dc2626);
  color: white;
}

.skip-navigation {
  --left-offset: -999em;

  inset-block-start: 4rem;
  inset-inline-start: var(--left-offset);
  position: absolute;
  white-space: nowrap;
  z-index: 11;

  &:focus {
    --left-offset: var(--inline-space);
  }
}