.mobile-menu {
  display: none;
}

@media (max-width: 900px) {
  .site-header > .language-switch {
    display: none;
  }

  .mobile-menu {
    display: block;
    margin-left: auto;
    flex-shrink: 0;
  }

  .mobile-menu > summary {
    display: flex;
    align-items: center;
    gap: 8px;
    min-height: 44px;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-muted);
    background: rgba(7, 5, 4, .45);
    font-size: .85rem;
    line-height: 1.4;
    cursor: pointer;
    list-style: none;
  }

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

  .mobile-menu > summary::after {
    content: "";
    width: 6px;
    height: 6px;
    border-right: 1px solid currentColor;
    border-bottom: 1px solid currentColor;
    transform: translateY(-2px) rotate(45deg);
  }

  .mobile-menu[open] > summary::after {
    transform: translateY(2px) rotate(225deg);
  }

  .mobile-menu-panel {
    position: absolute;
    top: calc(100% + 4px);
    right: 20px;
    left: 20px;
    max-height: calc(100vh - 104px);
    max-height: calc(100dvh - 104px);
    overflow-y: auto;
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text);
    background: var(--bg-soft);
    box-shadow: 0 12px 30px rgba(0, 0, 0, .35);
  }

  .mobile-menu-panel a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: 10px 12px;
    border-radius: 6px;
    font-size: .95rem;
  }

  .mobile-menu-panel a:hover {
    background: var(--glass);
  }

  .mobile-menu-panel .mobile-menu-language {
    margin-top: 6px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
    border-radius: 0;
    color: var(--text-muted);
    font-size: .85rem;
  }

  .mobile-menu > summary:focus-visible,
  .mobile-menu-panel a:focus-visible {
    outline: 2px solid var(--text);
    outline-offset: 3px;
  }

  .section[id] {
    scroll-margin-top: 96px;
  }
}