@media (max-width: 768px) {
  .hamburger-btn { display: flex; }

  .topbar {
    padding: 1rem 1.1rem;
    gap: 0.85rem;
  }

  .search-wrap { width: auto; flex: 1; }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 78vw;
    max-width: 300px;
    background: #14141c;
    transform: translateX(-100%);
    transition: transform 0.28s ease;
    z-index: 55;
    box-shadow: var(--shadow-pop);
  }
  .sidebar.open { transform: translateX(0); }

  .body-shell { position: relative; }

  .mobile-category-switch {
    display: block;
    padding: 0 1.1rem;
    margin-top: 0.85rem;
    position: relative;
  }
  .mobile-switch-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--glass-1);
    border: 1px solid var(--glass-border);
    border-radius: var(--r-sm);
    padding: 0.6rem 0.85rem;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--text-hi);
    width: 100%;
  }
  .mobile-switch-btn .chevron {
    margin-left: auto;
    color: var(--text-lo);
    font-size: 0.8rem;
    transition: transform 0.2s;
  }
  .mobile-switch-btn.open .chevron { transform: rotate(180deg); }

  .mobile-switch-menu {
    position: absolute;
    left: 1.1rem;
    right: 1.1rem;
    top: calc(100% + 4px);
    background: #1a1a22;
    border: 1px solid var(--glass-border-strong);
    border-radius: var(--r-sm);
    box-shadow: var(--shadow-pop);
    padding: 0.35rem;
    z-index: 45;
    display: none;
    max-height: 50vh;
    overflow-y: auto;
  }
  .mobile-switch-menu.open { display: block; }
  .mobile-switch-menu .category-row { border-left-width: 3px; }

  .panel-header { padding: 1.1rem 1.1rem 0.5rem; }
  .category-heading, .category-heading-input { font-size: 1.5rem; }
  .item-list-scroll { padding: 0.5rem 1.1rem 2rem; }

  .item-list {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 0.75rem;
  }

  .app-title { font-size: 1.1rem; }
}

@media (min-width: 769px) {
  .sidebar-scrim { display: none !important; }
}