/* === Mobile === */
@media (max-width: 768px) {
  #nav {
    display: none;
  }
  .msg, .tool-box {
    max-width: 100%;
  }
  .input-area {
    margin-bottom: var(--badge-spacing);
  }
  .fe-sidebar {
    width: 100px;
    min-width: 100px;
  }
  .card-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }
}