@media (max-width: 1199.98px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3, .command-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .inventory-layout, .charge-layout, .login-wrap { grid-template-columns: 1fr; }
  .detail-card { position: static; }
}

.mobile-app-bar {
  display: none;
}

@media (max-width: 991.98px) {
  .app-shell {
    display: block;
  }

  .sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    z-index: 1045;
    height: 100vh;
    padding: 20px;
    border: 0;
    border-inline-end: 1px solid var(--line);
    background: var(--bg-2);
  }

  .sidebar .offcanvas-body {
    overflow-y: auto;
  }

  .sidebar .offcanvas-header {
    display: flex;
    flex-shrink: 0;
    justify-content: flex-end;
    padding: 0 0 12px;
  }

  .mobile-app-bar {
    position: sticky;
    top: 0;
    z-index: 1020;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-width: 0;
    gap: 12px;
    margin: -16px -16px 20px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--line);
    background: rgba(17, 24, 49, .92);
    backdrop-filter: blur(16px);
  }

  .mobile-app-bar-title {
    min-width: 0;
    color: var(--text);
    font-size: 16px;
    font-weight: 800;
  }

  .mobile-menu-button {
    display: inline-grid;
    flex: 0 0 auto;
    width: 40px;
    height: 40px;
    place-items: center;
    padding: 0;
    border: 1px solid var(--line);
    border-radius: 12px;
    color: var(--text);
    background: rgba(255, 255, 255, .1);
  }

  .main {
    min-width: 0;
    padding: 16px;
  }
}

@media (max-width: 780px) {
  .nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .topbar { align-items: center; flex-direction: row; flex-wrap: wrap; }
  .grid-4, .grid-3, .grid-2, .command-grid, .external-grid { grid-template-columns: 1fr; }
  .filter-row { grid-template-columns: 1fr; }
  .spring-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .login-hero { min-height: auto; padding: 22px; }
  .login-form { padding: 22px; }
}

@media (min-width: 992px) {
  .sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    padding: 24px;
  }
}

@media (max-width: 359.98px) {
  .nav { grid-template-columns: 1fr; }
  .spring-grid { grid-template-columns: 1fr; }
}