@media (max-width: 900px) {
    body { overflow-wrap: anywhere; }
    .app-shell { padding: 18px 12px 40px; }
    .app-shell .panel { padding: 16px 12px; }
    .app-shell .top-bar, .app-shell .page-heading, .session-controls { flex-wrap: wrap; }
    .app-shell .page-heading { gap: 12px; align-items: flex-start; }
    .app-shell .page-heading > div { min-width: 0; max-width: 100%; flex: 1 1 auto; }
    .session-controls { min-width: 0; max-width: 100%; gap: 8px; }
    .session-controls .user-chip { flex: 1 1 120px; max-width: 200px; }
    .back, .back-link, .logout-btn, .login-link { display: inline-flex; align-items: center; min-height: 44px; padding-block: 8px; }
    .user-chip { min-width: 0; max-width: 100%; }
    .app-shell .form-grid, .app-shell .purchase-flow { grid-template-columns: minmax(0, 1fr); }
    .app-shell .response-side { border-left: 0; border-top: 1px solid var(--border); }
    .actions > *, .form-footer > *, .panel-heading > * { min-width: 0; max-width: 100%; }
    button, a.primary-button { min-height: 44px; }
    button { white-space: normal; overflow-wrap: anywhere; }
    input:not([type="checkbox"]):not([type="radio"]), textarea, select { min-width: 0; max-width: 100%; font-size: 16px; }
    input:not([type="checkbox"]):not([type="radio"]), select { min-height: 44px; }
    .app-shell .section-nav { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(140px, 100%), 1fr)); position: static; overflow: visible; }
    .app-shell .section-nav button { min-width: 0; white-space: normal; }
    .app-shell .list-filters { grid-template-columns: minmax(0, 1fr) auto; }
    .app-shell .list-filters > label:first-child { grid-column: 1 / -1; }
    .app-shell .table-wrap { min-width: 0; max-width: 100%; }
    table[data-mobile-cards], table[data-mobile-cards] tbody { display: block; width: 100%; min-width: 0; max-width: 100%; }
    table[data-mobile-cards] thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
    table[data-mobile-cards] tbody > tr { display: grid; grid-template-columns: minmax(0, 1fr); min-width: 0; padding: 12px 14px; border-bottom: 1px solid var(--border); }
    table[data-mobile-cards] tbody > tr:last-child { border-bottom: 0; }
    table[data-mobile-cards] tbody > tr > td { display: block; min-width: 0; width: auto; max-width: 100%; padding: 7px 0; border: 0; text-align: left; white-space: normal; overflow-wrap: anywhere; }
    table[data-mobile-cards] td[data-label]::before { content: attr(data-label); display: block; margin-bottom: 4px; color: var(--muted); font: 400 .75rem var(--sans, system-ui, sans-serif); letter-spacing: normal; text-transform: none; }
    table[data-mobile-cards] td[colspan]::before { display: none; }
    table[data-mobile-cards] td button { white-space: normal; max-width: 100%; }
    table[data-mobile-cards] .tracking-reference, table[data-mobile-cards] .receipt-indicator { min-width: 0; max-width: 100%; }
    table[data-mobile-cards] .tracking-text { display: block; overflow: visible; -webkit-line-clamp: unset; }
    .pending-table .request-day-separator th { width: 100%; padding: 4px 0; }
    .request-day-heading { flex-wrap: wrap; }
    .request-line-index { font-size: .9rem; }
    .purchase-dialog:not(#components-dialog):not(#purchase-details-dialog) { width: calc(100% - 20px); max-height: calc(100dvh - 20px); padding: 18px; }
    .purchase-dialog:not(#components-dialog):not(#purchase-details-dialog) > .drawer-heading { top: -18px; margin: -18px -18px 14px; padding: 14px 18px; }
    body:has(dialog[open], .modal-backdrop.visible) { overflow: hidden; }
    .purchase-dialog { scroll-padding-block: 76px 20px; }
    .purchase-dialog .drawer-heading { flex-wrap: nowrap; }
    .purchase-dialog .drawer-heading > button { min-height: 44px; }
    .purchase-dialog .form-footer { flex-wrap: wrap; }
    .purchase-dialog .form-footer button { flex: 1 1 120px; }
    .purchase-record, .purchase-status, .purchase-receipt { padding: 14px 12px; }
    .additional-order-reference { align-items: stretch; flex-wrap: wrap; }
    .additional-order-reference label { flex-basis: 160px; }
    .conversation-sidebar { padding: 14px; min-height: min(360px, calc(100dvh - 32px)); }
    .conversation-sidebar .message-list { min-height: 60px; }
    .conversation-sidebar textarea { min-height: 60px; }
    .vvn-host .vvn-bell { min-width: 44px; min-height: 44px; }
    .vvn-heading { flex-wrap: wrap; }
    .vvn-dialog { scroll-padding-block: 16px; }
    body:has(> .grid), body:has(> .section) { padding: 24px 12px 40px; }
    body > .grid, .section > .grid { grid-template-columns: minmax(0, 1fr); }
    .top-actions { justify-content: flex-start; }
    .top-actions > a, .top-actions > button { min-height: 44px; }
    body:has(> .card) { padding: 16px 12px; align-items: flex-start; }
    body > .card { padding: 24px 20px; margin-block: auto; min-width: 0; }
    body > .card input, body > .card select, body > .card button { min-height: 44px; }
    body > .wrap { width: 100%; padding: 20px 12px 48px; }
    .wrap .header { flex-wrap: wrap; gap: 10px; margin-bottom: 20px; }
    .wrap .header-title { min-width: 0; }
    .wrap .header-title h1 { overflow-wrap: anywhere; }
    .wrap .panel, .wrap .search-panel { padding: 16px 12px; }
    .wrap .search-row, .wrap .scan-row, .wrap .project-row, .wrap .project-select-row,
    .wrap .from-project-row, .wrap .preview-row, .wrap .preview-head, .wrap .result-card-head,
    .wrap .consume-row, .wrap .add-row, .wrap .confirm-bar, .wrap .actions-bar,
    .wrap .card-identity, .wrap .supplier-head, .wrap .info-location { flex-wrap: wrap; gap: 10px; }
    .wrap .search-input, .wrap .scan-input, .wrap .project-select, .wrap .from-project-select { min-width: 0; flex: 1 1 180px; }
    .wrap .project-select-wrap { min-width: 0; flex: 1 1 200px; }
    .wrap .project-badge { max-width: 100%; white-space: normal; }
    .wrap .search-btn, .wrap .scan-btn, .wrap .add-btn, .wrap .consume-add-btn, .wrap .confirm-btn { flex: 1 1 160px; white-space: normal; }
    .wrap .preview-body, .wrap .result-card-body, .wrap .tab-pane { padding: 14px 12px; }
    .wrap .card-identity { flex-direction: column; align-items: stretch; }
    .wrap .card-stock-block { align-self: flex-start; text-align: left; }
    .wrap .stepper { flex: none; }
    .wrap .stepper button { min-width: 44px; }
    .wrap .stepper input { width: 72px; min-height: 44px; }
    .wrap .project-stock-list, .wrap .params-grid, .wrap .info-meta, .wrap .mapper-grid { grid-template-columns: minmax(0, 1fr); }
    .wrap .stock-hero, .wrap .info-hero, .wrap .summary.visible { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .wrap .meta-strip { grid-template-columns: minmax(0, 1fr); }
    .wrap .stock-cell { min-width: 0; padding: 12px 8px; }
    .wrap .rc-desc { white-space: normal; overflow: visible; max-width: 100%; }
    .wrap .result-row { flex-wrap: wrap; gap: 8px; }
    .wrap .result-row .r-mpn { min-width: 0; flex-basis: 100%; }
    .wrap .card-tabs, .wrap .filter-bar { flex-wrap: wrap; width: 100%; }
    .wrap .card-tab, .wrap .filter-tab { flex: 1 1 110px; min-height: 44px; white-space: normal; }
    .wrap .mapper-field { flex-direction: column; align-items: stretch; gap: 6px; }
    .wrap .mapper-label { min-width: 0; }
    .wrap .mapper-select, .wrap .multiplier-row input { min-width: 0; max-width: 100%; }
    .wrap .multiplier-row { flex-wrap: wrap; gap: 10px; }
    .wrap .cart-proj-select { width: 100%; }
    .wrap .remove-btn { min-width: 44px; }
    .modal-backdrop { padding: 12px; overflow-y: auto; }
    .modal-backdrop .modal { min-width: 0; max-width: 100%; max-height: calc(100dvh - 24px); padding: 20px 16px; overflow-y: auto; }
    .modal-actions { flex-wrap: wrap; }
    .modal-actions button { flex: 1 1 120px; }
    .incoming-popup { left: 12px !important; right: 12px !important; top: 12px !important; min-width: 0; max-width: none; max-height: calc(100dvh - 24px); overflow-y: auto; }
    .popup-row { flex-wrap: wrap; gap: 6px; }
    .popup-key { min-width: 0; }
    .toast { right: 12px; max-width: calc(100% - 24px); white-space: normal; }
    .session { flex-wrap: wrap; min-width: 0; }
    body > .top-bar { flex-wrap: wrap; gap: 12px; }
}