/* Responsive two-tier mobile header. */
#kt-mobile-header-row { display: none; }

@media (max-width: 991px) {
  html.kt-two-tier-mobile #quarto-header {
    top: 0;
    transform: none;
    /* Native will-change:transform otherwise makes fixed drawers header-relative. */
    will-change: top;
    transition: top .2s linear;
  }
  html.kt-two-tier-mobile #quarto-header.headroom--unpinned {
    top: calc(-1 * var(--kt-mobile-header-height));
    transform: none;
  }
  html.kt-two-tier-mobile #quarto-header .navbar {
    padding: 0;
  }
  html.kt-two-tier-mobile #quarto-header .navbar-container {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 0 .4rem;
    padding: 0 1rem;
  }
  html.kt-two-tier-mobile #quarto-header #kt-publication-brand {
    display: flex;
    grid-row: 1;
    grid-column: 1;
    order: initial;
    min-width: 0;
    min-height: 56px;
    margin: 0;
  }
  html.kt-two-tier-mobile #quarto-header .kt-brand-name {
    font-size: .94rem;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  html.kt-two-tier-mobile #quarto-header .quarto-navbar-tools {
    grid-row: 1;
    grid-column: 2;
    order: initial;
    margin: 0;
    gap: 6px;
  }
  html.kt-two-tier-mobile #quarto-header .quarto-navbar-tools > #kt-theme-controls {
    display: inline-flex;
    gap: 6px;
  }
  html.kt-two-tier-mobile #kt-theme-controls :is(.quarto-color-scheme-toggle, #kt-theme-auto) {
    box-sizing: border-box;
    flex: 0 0 44px;
    width: 44px;
    min-width: 44px;
    min-height: 44px;
    padding: .25rem .2rem !important;
  }
  html.kt-two-tier-mobile #quarto-header #kt-search-launcher {
    flex: 0 0 44px;
    width: 44px;
    height: 44px;
    min-height: 44px;
    margin: 0;
    border-color: transparent;
    background: transparent;
  }
  html.kt-two-tier-mobile #quarto-header #kt-search-launcher:is(:hover, :focus-visible) {
    color: var(--kt-link);
    background: var(--kt-accent-soft);
  }
  html.kt-two-tier-mobile #kt-mobile-header-row {
    display: grid;
    grid-row: 2;
    grid-column: 1 / -1;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: .5rem;
    min-height: 52px;
    padding-block: 4px;
    border-top: 1px solid var(--kt-border);
  }
  html.kt-two-tier-mobile #quarto-header .navbar-toggler {
    order: initial;
    margin: 0;
    padding: .35rem .45rem;
  }
  html.kt-two-tier-mobile #kt-mobile-header-context {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--kt-accent);
    font-size: .78rem;
    line-height: 1.4;
  }
  html.kt-two-tier-mobile #quarto-header #navbarCollapse {
    width: min(78vw, 288px);
    margin: 0;
    padding-top: 0;
  }
  /* The existing drawer landmark identifies the English UI without changing labels. */
  html.kt-two-tier-mobile #quarto-header #navbarCollapse[aria-label="Navigation"] {
    width: min(82vw, 304px);
  }
  html.kt-two-tier-mobile #quarto-content.page-columns > #kt-page-toc-panel {
    top: var(--kt-mobile-panel-top, 0px) !important;
    height: calc(100dvh - var(--kt-mobile-panel-top, 0px));
    max-height: calc(100dvh - var(--kt-mobile-panel-top, 0px)) !important;
  }
  html.kt-two-tier-mobile #quarto-content.page-columns > #kt-page-toc-backdrop {
    top: var(--kt-mobile-panel-top, 0px);
  }
  /* Exact entries must clear the taller pinned header without changing targets. */
  html.kt-two-tier-mobile #quarto-document-content :is(tr[id^="memory-"], .kt-codex-entry) {
    scroll-margin-top: calc(var(--kt-mobile-header-height) + 1rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  html.kt-two-tier-mobile #quarto-header { transition: none; }
}