/* Shared mobile navigation for content guides. Keep the bar in normal flow so
   page-level main padding cannot create a gap above it. */
.content-topbar {
  display: none;
}

.mobile-topbar {
  display: none !important;
}

@media (max-width: 650px) {
  .content-topbar {
    position: sticky;
    top: 0;
    z-index: 60;
    display: grid;
    grid-template-columns: 58px minmax(0, 1fr) 58px;
    min-height: 62px;
    border-bottom: 1px solid var(--content-topbar-line, var(--line, #d9e5de));
    background: color-mix(
      in srgb,
      var(--content-topbar-bg, var(--paper, #fffefa)) 94%,
      transparent
    );
    color: var(--content-topbar-ink, var(--ink, #27342e));
    backdrop-filter: blur(12px);
  }

  .content-topbar__button {
    display: inline-grid;
    width: 58px;
    height: 62px;
    place-items: center;
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--content-topbar-accent, var(--leaf, var(--accent, #3f785f)));
    cursor: pointer;
  }

  .content-topbar__button svg {
    width: 29px;
    height: 29px;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.8;
    stroke-linecap: round;
    stroke-linejoin: round;
  }

  .content-topbar__button:focus-visible {
    outline: 3px solid color-mix(
      in srgb,
      var(--content-topbar-accent, var(--leaf, #3f785f)) 24%,
      transparent
    );
    outline-offset: -4px;
  }

  .content-topbar__title {
    overflow: hidden;
    align-self: center;
    color: inherit;
    font-size: 14px;
    font-weight: 800;
    letter-spacing: -0.035em;
    text-align: center;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  body.content-topbar-locked {
    overflow: hidden;
  }

  .content-topbar-backdrop {
    position: fixed;
    z-index: 70;
    inset: 0;
    display: none;
    background: rgba(27, 45, 35, 0.42);
  }

  .content-topbar-backdrop.is-open {
    display: block;
  }

  .content-topbar-sheet {
    position: fixed;
    z-index: 71;
    inset: 0;
    display: flex;
    flex-direction: column;
    padding: 22px 17px max(30px, env(safe-area-inset-bottom));
    background: var(--content-topbar-bg, var(--paper, #fffefa));
    opacity: 0;
    pointer-events: none;
    transform: translateY(18px);
    transition: opacity 0.2s ease, transform 0.2s ease;
  }

  .content-topbar-sheet.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .content-topbar-sheet__head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 22px;
  }

  .content-topbar-sheet__head h2 {
    margin: 0;
    color: var(--content-topbar-ink, var(--ink, #27342e));
    font-size: 22px;
    letter-spacing: -0.055em;
  }

  .content-topbar-sheet__head p {
    margin: 4px 0 0;
    color: var(--content-topbar-muted, var(--muted, #66746d));
    font-size: 13px;
  }

  .content-topbar-sheet__close {
    flex: 0 0 auto;
    width: 42px;
    height: 42px;
    border: 1px solid var(--content-topbar-line, var(--line, #d9e5de));
    border-radius: 50%;
    background: #fff;
    color: var(--content-topbar-ink, var(--ink, #27342e));
    cursor: pointer;
    font-size: 24px;
    line-height: 1;
  }

  .content-topbar-toc {
    overflow-y: auto;
  }

  .content-topbar-toc__list,
  .content-topbar-search__results {
    display: grid;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
  }

  .content-topbar-toc__link,
  .content-topbar-search__result {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    width: 100%;
    min-height: 54px;
    padding: 11px 13px;
    border: 1px solid var(--content-topbar-line, var(--line, #d9e5de));
    border-radius: 15px;
    background: #fff;
    color: var(--content-topbar-ink, var(--ink, #27342e));
    font: inherit;
    text-align: left;
    text-decoration: none;
  }

  .content-topbar-toc__link:hover,
  .content-topbar-search__result:hover {
    border-color: var(--content-topbar-accent, var(--leaf, #3f785f));
  }

  .content-topbar-toc__number {
    flex: 0 0 auto;
    color: var(--content-topbar-accent, var(--leaf, #3f785f));
    font-size: 12px;
    font-weight: 900;
  }

  .content-topbar-toc__copy {
    flex: 1 1 auto;
    min-width: 0;
  }

  .content-topbar-toc__copy strong,
  .content-topbar-search__result strong {
    display: block;
    overflow: hidden;
    font-size: 14px;
    letter-spacing: -0.03em;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .content-topbar-toc__copy small {
    display: block;
    overflow: hidden;
    margin-top: 2px;
    color: var(--content-topbar-muted, var(--muted, #66746d));
    font-size: 11px;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .content-topbar-search__input {
    width: 100%;
    min-height: 48px;
    margin-bottom: 10px;
    padding: 0 14px;
    border: 1px solid var(--content-topbar-line, var(--line, #d9e5de));
    border-radius: 14px;
    outline: none;
    background: #fff;
    color: var(--content-topbar-ink, var(--ink, #27342e));
    font: inherit;
  }

  .content-topbar-search__input:focus {
    border-color: var(--content-topbar-accent, var(--leaf, #3f785f));
    box-shadow: 0 0 0 3px
      color-mix(
        in srgb,
        var(--content-topbar-accent, var(--leaf, #3f785f)) 15%,
        transparent
      );
  }

  .content-topbar-search__status {
    min-height: 20px;
    margin: 0 2px 10px;
    color: var(--content-topbar-muted, var(--muted, #66746d));
    font-size: 12px;
  }

  .content-topbar-search__results {
    overflow-y: auto;
  }

  .content-topbar-search__result {
    display: block;
    cursor: pointer;
  }

  .content-topbar-search__result small {
    display: block;
    margin-top: 2px;
    color: var(--content-topbar-muted, var(--muted, #66746d));
    font-size: 11px;
  }

  .content-topbar-search__empty {
    margin: 12px 0;
    color: var(--content-topbar-muted, var(--muted, #66746d));
    font-size: 13px;
    text-align: center;
  }
}

@media (min-width: 651px) {
  .content-topbar-backdrop,
  .content-topbar-sheet {
    display: none !important;
  }
}