@media (max-width: 900px) {
    html,
    body {
        height: auto;
        min-height: 100%;
        overflow-x: hidden;
        overflow-y: auto;
    }

    body {
        background: #f5f7fb;
    }

    .desktop-only-warning {
        display: none !important;
    }

    .desktop-app {
        display: block !important;
        height: auto;
        min-height: 100vh;
        overflow: visible;
    }

    .app-shell {
        display: block;
        height: auto;
        min-height: 100vh;
        overflow: visible;
    }

    .side-nav {
        position: sticky;
        top: 0;
        z-index: 12;
        min-height: 0;
        padding: 12px;
        gap: 10px;
        overflow: hidden;
        box-shadow: 0 12px 28px rgba(15, 23, 42, .18);
    }

    .brand {
        display: grid;
        grid-template-columns: minmax(0, 1fr) auto;
        align-items: center;
        gap: 10px;
        padding: 0 0 10px;
    }

    .brand-title {
        margin-top: 2px;
        font-size: 18px;
    }

    .branch-pill {
        width: 150px;
        margin-top: 0;
        padding: 7px 9px;
        font-size: 11px;
    }

    .branch-pill strong {
        font-size: 12px;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .nav-list {
        flex-direction: row;
        gap: 8px;
        overflow-x: auto;
        padding-bottom: 2px;
        scroll-snap-type: x proximity;
    }

    .nav-list::-webkit-scrollbar {
        display: none;
    }

    .nav-link {
        flex: 0 0 auto;
        min-height: 38px;
        padding: 8px 11px;
        font-size: 13px;
        background: rgba(255, 255, 255, .06);
        scroll-snap-align: start;
    }

    .nav-link span:last-child {
        display: none;
    }

    .side-nav > div[style] {
        display: flex !important;
        margin-top: 8px !important;
    }

    .main-area {
        min-height: 0;
        padding: 14px;
        overflow: visible;
    }

    .topbar {
        min-height: 0;
        align-items: stretch;
        flex-direction: column;
        gap: 12px;
        margin-bottom: 12px;
    }

    .page-title {
        font-size: 24px;
    }

    .page-subtitle {
        font-size: 14px;
        line-height: 1.45;
    }

    .topbar-actions {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 8px;
    }

    .topbar-actions .btn:only-child {
        grid-column: 1 / -1;
    }

    .page-grid,
    .content-panel {
        min-height: 0;
        overflow: visible;
    }

    .summary-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 10px;
    }

    .metric {
        padding: 12px;
        box-shadow: 0 8px 20px rgba(15, 23, 42, .06);
    }

    .metric-value {
        font-size: 20px;
        overflow-wrap: anywhere;
    }

    .panel {
        box-shadow: 0 10px 26px rgba(15, 23, 42, .08);
    }

    .panel-pad {
        padding: 12px;
    }

    .toolbar {
        display: grid;
        grid-template-columns: minmax(0, 1fr);
        align-items: stretch;
        gap: 10px;
        padding: 12px;
    }

    .field,
    .toolbar .status {
        width: 100%;
        min-width: 0;
    }

    .input,
    .select,
    .btn {
        width: 100%;
        min-width: 0;
        min-height: 44px;
    }

    .input.wide {
        min-width: 0;
    }

    .segmented {
        display: flex;
        width: 100%;
        max-width: 100%;
        overflow-x: auto;
    }

    .segmented .segment {
        flex: 1 0 auto;
        min-height: 36px;
    }

    .table-wrap,
    .small-table-wrap {
        max-height: none;
        overflow: visible;
    }

    .data-table,
    .data-table thead,
    .data-table tbody,
    .data-table tr,
    .data-table td {
        display: block;
    }

    .data-table {
        min-width: 0;
    }

    .data-table colgroup,
    .data-table thead {
        display: none;
    }

    .data-table tbody {
        display: grid;
        gap: 10px;
        padding: 10px;
    }

    .data-table tbody tr {
        display: grid;
        gap: 8px;
        padding: 12px;
        border: 1px solid var(--line);
        border-radius: var(--radius);
        background: #ffffff;
        box-shadow: 0 8px 18px rgba(15, 23, 42, .05);
    }

    .data-table tbody tr:hover {
        background: #ffffff;
    }

    .data-table td {
        display: grid;
        grid-template-columns: minmax(92px, 34%) minmax(0, 1fr);
        gap: 10px;
        align-items: start;
        padding: 0;
        border-bottom: 0;
        white-space: normal;
        overflow: visible;
        text-overflow: clip;
        line-height: 1.45;
    }

    .data-table td::before {
        content: attr(data-label);
        color: var(--muted);
        font-size: 12px;
        font-weight: 800;
        text-transform: uppercase;
        letter-spacing: .04em;
    }

    .data-table td:first-child {
        grid-template-columns: minmax(0, 1fr);
        padding-bottom: 7px;
        border-bottom: 1px solid var(--line);
    }

    .data-table td:first-child::before {
        display: none;
    }

    .num {
        text-align: left !important;
    }

    .badge {
        justify-self: start;
    }

    .customer-main {
        font-size: 16px;
    }

    .customer-sub {
        font-size: 13px;
    }

    .menu-grid {
        grid-template-columns: minmax(0, 1fr);
        gap: 10px;
    }

    .menu-card {
        min-height: 0;
        padding: 14px;
    }

    .menu-card-title {
        font-size: 16px;
    }

    .menu-card-sub {
        font-size: 14px;
    }

    .two-col,
    .section-grid,
    .detail-grid,
    .search-hero,
    .form-grid,
    .login-panel,
    .share-panel {
        grid-template-columns: minmax(0, 1fr);
    }

    .section-grid {
        gap: 12px;
    }

    .section-grid .panel {
        min-height: 0;
    }

    .panel-titlebar {
        padding: 12px;
    }

    .record-title-row {
        display: grid;
        gap: 10px;
    }

    .record-title {
        font-size: 20px;
    }

    .record-card {
        padding: 14px;
    }

    .side-panel {
        position: static;
    }

    .login-shell {
        min-height: 100vh;
        place-items: start stretch;
        padding: 14px;
    }

    .login-panel {
        width: 100%;
    }

    .login-aside {
        padding: 22px;
        gap: 20px;
    }

    .login-aside h1 {
        font-size: 28px;
    }

    .login-content {
        padding: 18px;
    }

    .branch-row,
    .branch-select,
    .share-row {
        grid-template-columns: minmax(0, 1fr);
    }

    .share-toolbar {
        display: grid;
        align-items: stretch;
    }

    .share-check {
        height: auto;
        justify-content: start;
    }

    .share-actions {
        display: grid;
        grid-template-columns: minmax(0, 1fr);
    }

    .share-actions .btn,
    .setup-action {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        text-decoration: none;
    }

    .branch-actions {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .modal-backdrop {
        align-items: flex-end;
        padding: 10px;
    }

    .modal {
        width: 100%;
        max-height: calc(100vh - 20px);
        border-radius: 12px;
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 16px;
    }

    .modal-footer {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 420px) {
    .main-area {
        padding: 10px;
    }

    .summary-grid {
        gap: 8px;
    }

    .metric {
        padding: 10px;
    }

    .metric-value {
        font-size: 18px;
    }

    .branch-pill {
        width: 132px;
    }

    .data-table td {
        grid-template-columns: minmax(82px, 38%) minmax(0, 1fr);
    }
}