.mobile-bottom-bar,
.mobile-site-menu,
.mobile-bottom-backdrop {
  display: none;
}

@media (max-width: 900px) {
  body.mobile-navigation-open {
    overflow: hidden;
  }

  .main-nav:not(.mobile-site-menu) {
    display: none !important;
  }

  .public-shell {
    box-sizing: border-box;
    padding-bottom: calc(64px + env(safe-area-inset-bottom, 0px)) !important;
  }

  .pwa-install-button-floating {
    bottom: calc(76px + env(safe-area-inset-bottom, 0px)) !important;
  }

  .page-public-sidebar[data-sidebar-drawer] {
    bottom: calc(64px + env(safe-area-inset-bottom, 0px)) !important;
  }

  .page-public-sidebar .sidebar-drawer-handle {
    display: none !important;
  }

  .mobile-bottom-bar {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 95;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: end;
    min-height: calc(64px + env(safe-area-inset-bottom, 0px));
    padding: 0 max(8px, env(safe-area-inset-right, 0px)) env(safe-area-inset-bottom, 0px) max(8px, env(safe-area-inset-left, 0px));
    border-top: 1px solid color-mix(in srgb, var(--border) 75%, transparent);
    background: color-mix(in srgb, var(--surface, #fff) 94%, transparent);
    box-shadow: 0 -10px 30px rgba(0, 0, 0, .18);
    backdrop-filter: blur(16px);
  }

  .mobile-bottom-bar > button {
    display: grid;
    place-items: center;
    align-content: center;
    gap: 2px;
    width: 100%;
    min-width: 0;
    min-height: 64px;
    margin: 0;
    padding: 8px 5px;
    border: 0;
    border-radius: 0;
    background: transparent;
    color: var(--text);
    box-shadow: none;
    font-size: 12px;
    line-height: 1.1;
  }

  .mobile-bottom-bar > button > span {
    font-size: 22px;
    line-height: 1;
  }

  .mobile-bottom-bar > button[aria-expanded="true"] {
    color: var(--accent-strong, var(--accent));
  }

  .mobile-bottom-bar .mobile-bottom-menu-button {
    justify-self: center;
    width: 82px;
    min-height: 82px;
    margin-top: -24px;
    border-radius: 50%;
    background: var(--accent-strong, var(--accent));
    color: #fff;
    box-shadow: 0 8px 24px rgba(0, 0, 0, .28);
    font-size: 13px;
  }

  .mobile-bottom-bar .mobile-bottom-menu-button > span {
    font-size: 27px;
  }

  .mobile-site-menu {
    position: fixed;
    right: 12px;
    bottom: calc(76px + env(safe-area-inset-bottom, 0px));
    left: 12px;
    z-index: 94;
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
    max-height: min(70vh, 620px);
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: var(--surface, #fff);
    color: var(--text);
    box-shadow: 0 20px 60px rgba(0, 0, 0, .35);
    transform: translateY(calc(100% + 100px));
    opacity: 0;
    visibility: hidden;
    transition: transform .22s ease, opacity .22s ease, visibility .22s ease;
  }

  .mobile-site-menu.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .mobile-site-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
  }

  .mobile-site-menu-header button {
    width: 38px;
    min-height: 38px;
    margin: 0;
    padding: 0;
    border-radius: 50%;
  }

  .mobile-site-menu-links {
    display: grid;
    gap: 2px;
    min-height: 0;
    padding: 8px 10px 12px;
    overflow-y: auto;
    overscroll-behavior: contain;
    scrollbar-width: thin;
    scrollbar-color: var(--accent, #1769aa) color-mix(in srgb, var(--surface, #fff) 82%, var(--border));
    -webkit-overflow-scrolling: touch;
  }

  .mobile-site-menu-links::-webkit-scrollbar {
    width: 8px;
  }

  .mobile-site-menu-links::-webkit-scrollbar-track {
    background: color-mix(in srgb, var(--surface, #fff) 82%, var(--border));
    border-radius: 999px;
  }

  .mobile-site-menu-links::-webkit-scrollbar-thumb {
    border: 2px solid color-mix(in srgb, var(--surface, #fff) 82%, var(--border));
    border-radius: 999px;
    background: var(--accent, #1769aa);
  }

  .mobile-site-menu-links > a,
  .mobile-site-menu-links summary,
  .mobile-site-submenu a {
    display: flex !important;
    align-items: center;
    gap: 9px;
    width: 100%;
    min-height: 0 !important;
    margin: 0 !important;
    padding: 8px 10px !important;
    border-radius: 10px;
    color: inherit;
    text-decoration: none;
    font-weight: 700;
    font-size: 15px;
    line-height: 1.25 !important;
    cursor: pointer;
  }

  .mobile-site-menu-links a::before {
    content: "";
    width: 6px;
    height: 6px;
    flex: 0 0 6px;
    border-radius: 50%;
    background: var(--accent, currentColor);
  }

  .mobile-site-menu-links details > summary {
    list-style: none;
  }

  .mobile-site-menu-links details > summary::-webkit-details-marker {
    display: none;
  }

  .mobile-site-menu-links details > summary::before {
    content: "▤";
    flex: 0 0 16px;
    color: var(--accent-strong, var(--accent));
    font-size: 15px;
    line-height: 1;
  }

  .mobile-site-menu-links details > summary::after {
    content: "›";
    margin-left: auto;
    color: var(--muted, currentColor);
    font-size: 23px;
    line-height: .7;
    transition: transform .18s ease;
  }

  .mobile-site-menu-links details[open] > summary::after {
    transform: rotate(90deg);
  }

  .mobile-site-submenu {
    display: grid;
    gap: 1px;
    margin: 1px 0 3px 18px;
    padding-left: 8px;
    border-left: 1px solid var(--border);
  }

  .mobile-site-submenu a {
    padding-block: 7px !important;
    font-size: 14px;
  }

  .mobile-bottom-backdrop {
    position: fixed;
    inset: 0;
    z-index: 93;
    display: block;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: rgba(0, 0, 0, .48);
  }

  .mobile-bottom-backdrop[hidden] {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .mobile-site-menu { transition: none; }
}