@media (max-width: 600px) {
  html,
  body {
    max-width: 100%;
    overflow-x: hidden;
  }

  .authenticated .header {
    position: sticky;
    top: 0;
    z-index: 50;
    height: 68px;
    padding: 8px 12px;
    gap: 8px;
  }

  .authenticated .brand {
    flex: 0 0 auto;
    min-width: 0;
  }

  #mobile-menu-button,
  #mobile-menu-overlay {
    display: none;
  }

  .authenticated #mobile-menu-button {
    display: grid;
    flex: 0 0 38px;
    width: 38px;
    height: 38px;
    padding: 0;
    place-items: center;
    border: 1px solid #49637a;
    border-radius: 9px;
    background: transparent;
    color: #fff;
    font-size: 21px;
  }

  .authenticated .brand-logo {
    display: block;
    width: 38px;
    height: 38px;
  }

  .authenticated .brand span {
    display: none;
  }

  .authenticated #account-actions {
    display: flex !important;
    flex: 1 1 auto;
    justify-content: flex-end;
    min-width: 0;
    margin-left: auto;
    gap: 8px;
  }

  .authenticated #account-name {
    display: -webkit-box;
    max-width: 145px;
    min-width: 0;
    overflow: hidden;
    color: #fff;
    font-size: 13px;
    line-height: 1.2;
    text-align: right;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
  }

  .authenticated #logout {
    display: block !important;
    flex: 0 0 auto;
    padding: 8px 10px;
    border-color: #667d91;
    font-size: 13px;
  }

  .authenticated #logout:disabled {
    cursor: wait;
    opacity: 0.7;
  }

  .dashboard.active {
    min-height: calc(100vh - 68px);
  }

  .dashboard aside {
    display: flex;
    position: fixed;
    z-index: 70;
    top: 0;
    bottom: 0;
    left: 0;
    width: min(82vw, 310px);
    padding: calc(24px + env(safe-area-inset-top)) 17px 24px;
    overflow-y: auto;
    box-shadow: 18px 0 50px #0007;
    transform: translateX(-105%);
    transition: transform 0.25s ease;
  }

  .mobile-menu-open .dashboard.active aside {
    transform: translateX(0);
  }

  .authenticated #mobile-menu-overlay {
    display: block;
    position: fixed;
    z-index: 60;
    inset: 0;
    border: 0;
    background: #03111db8;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
  }

  .authenticated.mobile-menu-open {
    overflow: hidden;
  }

  .authenticated.mobile-menu-open #mobile-menu-overlay {
    opacity: 1;
    pointer-events: auto;
  }

  .dashboard .content {
    padding: 24px 14px 44px;
  }

  .content h1 {
    margin-top: 8px;
    font-size: 34px;
    line-height: 1.08;
  }

  .stats {
    gap: 10px;
    margin: 20px 0;
  }

  .stats article {
    padding: 17px;
  }

  .stats strong {
    margin-top: 8px;
    font-size: 22px;
  }

  .shipping-card {
    gap: 18px;
    margin: 18px 0;
    padding: 19px;
  }

  .shipping-card h2 {
    font-size: 24px;
    line-height: 1.15;
  }

  .address-box {
    min-width: 0;
    padding: 58px 17px 17px;
    overflow-wrap: anywhere;
  }

  .address-box strong {
    padding-right: 0;
    font-size: 16px;
  }

  .address-box button {
    top: 12px;
    right: 12px;
  }

  .customer-package-list .package-row {
    padding: 16px;
  }
}

@media (min-width: 601px) {
  #mobile-menu-button,
  #mobile-menu-overlay {
    display: none;
  }
}

/* Distribucion compacta para telefonos y tabletas angostas. */
@media (max-width: 760px) {
  html {
    font-size: 15px;
    -webkit-text-size-adjust: 100%;
  }

  body,
  .authenticated,
  .dashboard,
  .dashboard .content,
  .admin-view,
  .customer-view {
    width: 100%;
    min-width: 0;
  }

  .dashboard .content {
    padding: 20px 12px calc(38px + env(safe-area-inset-bottom));
    overflow-x: hidden;
  }

  .content h1 {
    font-size: clamp(30px, 9vw, 38px);
    overflow-wrap: anywhere;
  }

  .content h2 {
    font-size: clamp(21px, 6.5vw, 27px);
    overflow-wrap: anywhere;
  }

  input,
  select,
  textarea,
  button {
    max-width: 100%;
  }

  input,
  select,
  textarea {
    min-width: 0;
    font-size: 16px !important;
  }

  /* Formularios, fichas y resumenes dejan de conservar columnas de PC. */
  .grid,
  .stats,
  .customer-row,
  .admin-payment-card,
  .payment-history-card,
  .bank-account-card,
  .finance-list.invoices article,
  .invoice-create-card,
  .finance-invoice-form .grid,
  .collection-metrics,
  .finance-customer-summary .collection-metrics {
    grid-template-columns: minmax(0, 1fr) !important;
  }

  .stats,
  .customer-list,
  .finance-list {
    gap: 10px;
  }

  .stats article,
  .customer-row,
  .admin-payment-card,
  .payment-history-card,
  .bank-account-card,
  .finance-list article {
    padding: 15px;
  }

  /* Flujo de pago: una decision por renglon y total siempre legible. */
  .payment-form {
    gap: 12px;
    margin-top: 16px;
  }

  .payment-form > section,
  .bank-account-form {
    min-width: 0;
    padding: 16px;
  }

  .payment-methods {
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) !important;
    gap: 10px;
  }

  .payment-methods label {
    box-sizing: border-box;
    width: 100%;
    min-height: 54px;
    padding: 13px;
  }

  .payment-charge-option {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 10px;
    padding: 13px 11px;
  }

  .payment-charge-option strong {
    font-size: 16px;
    white-space: nowrap;
  }

  .transfer-payment-fields {
    grid-template-columns: minmax(0, 1fr) !important;
    gap: 12px;
    padding: 14px;
  }

  .bank-details {
    grid-column: auto;
  }

  .payment-submit-row {
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) !important;
    align-items: stretch;
    gap: 14px;
    padding: 16px;
  }

  .payment-submit-row strong {
    font-size: 24px;
  }

  .payment-submit-row button,
  .payment-review-actions button,
  .finance-invoice-actions button {
    width: 100%;
  }

  .payment-balance {
    width: 100%;
    padding: 12px 14px;
    font-size: 22px;
    text-align: center;
  }

  .paid-invoice-card,
  .payment-history-card {
    align-items: stretch !important;
  }

  .paid-invoice-actions {
    justify-items: stretch !important;
  }

  .paid-invoice-actions .invoice-view-button {
    width: max-content;
  }

  /* Facturas: datos apilados, sin columnas comprimidas. */
  .delivery-invoice-option {
    align-items: stretch !important;
    flex-direction: column !important;
    padding: 16px;
  }

  .delivery-invoice-option > strong {
    align-self: flex-start;
    font-size: 21px;
  }

  .pilot-invoice-panel {
    padding: 15px;
  }

  .pilot-invoice-card header,
  .customer-invoice-sheet > header,
  .customer-invoice-summary,
  .customer-invoice-sheet footer {
    align-items: flex-start !important;
    flex-direction: column !important;
  }

  .customer-invoice-content {
    padding: 12px !important;
  }

  .customer-invoice-sheet > header {
    padding: 16px;
  }

  .customer-invoice-sheet > header h3 {
    font-size: 21px;
    overflow-wrap: anywhere;
  }

  .customer-invoice-line {
    grid-template-columns: minmax(0, 1fr) auto !important;
    gap: 8px;
  }

  .customer-invoice-line.heading {
    display: none;
  }

  .customer-invoice-line strong {
    grid-column: 2;
  }

  /* Ventanas emergentes ocupan el ancho util y conservan el boton cerrar. */
  dialog,
  [role="dialog"],
  .dialog > article,
  .modal > article,
  .invoice-payment-dialog-card,
  .customer-invoice-dialog-card {
    box-sizing: border-box;
    width: calc(100vw - 16px) !important;
    max-width: calc(100vw - 16px) !important;
    max-height: calc(100dvh - 16px) !important;
    margin: 8px auto !important;
  }

  .invoice-payment-summary {
    grid-template-columns: minmax(0, 1fr) !important;
  }

  .invoice-payment-line {
    grid-template-columns: minmax(0, 1fr) auto !important;
  }

  .invoice-payment-dialog-card form > .grid {
    grid-template-columns: minmax(0, 1fr) !important;
  }

  /* Tablas administrativas se desplazan dentro de su bloque, no toda la pagina. */
  .table-wrap,
  .report-table-wrap,
  .shipment-table-wrap,
  .finance-table-wrap {
    width: 100%;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  #toast {
    right: 10px;
    bottom: calc(10px + env(safe-area-inset-bottom));
    left: 10px;
    width: auto;
    text-align: center;
  }
}