/* Loaded after established styles. Desktop transaction behavior remains unchanged. */
.portal-mobile-header, .portal-row-toggle { display: none; }
.portal-shell { align-items: stretch; }
.portal-shell > .sidebar { flex-shrink: 0; }
.portal-content { min-width: 0; max-width: 100%; }
.portal-content .row > *, .portal-content .card, .portal-content .card-body { min-width: 0; }
.portal-content code { overflow-wrap: anywhere; white-space: normal; }
.portal-content img { max-width: 100%; }
.portal-content canvas { max-width: 100%; }

@media screen and (max-width: 991px) {
    .portal-shell { flex-direction: column; }
    .portal-shell > .sidebar {
        position: relative;
        width: 100% !important;
        min-height: 0 !important;
        max-height: 70vh;
        overflow-y: auto;
    }
    .portal-nav-ready > .sidebar { display: none; }
    .portal-nav-ready.portal-menu-open > .sidebar { display: block; }
    .portal-mobile-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        padding: 10px 16px;
        color: white;
        background: #212529;
        font-weight: 700;
    }
    .portal-mobile-header .btn { flex-shrink: 0; }
    .portal-content { width: 100%; margin-top: 0 !important; }
    .portal-content > nav, .portal-content > header { flex-wrap: wrap; gap: 8px; }
    .portal-content .navbar-brand { white-space: normal; overflow-wrap: anywhere; max-width: 100%; }
    .billing-tabs, .billing-subtabs, .booking-tabs { flex-wrap: wrap; }
    .billing-tab, .billing-subtab, .booking-tab { white-space: normal; max-width: 100%; }
    .portal-content .form-control, .portal-content .form-select { min-height: 44px; font-size: 16px; }
    .portal-content .btn, .portal-mobile-header .btn, .sidebar .nav-link { min-height: 44px; }
    .portal-content .btn { white-space: normal; }
    .portal-content .input-group { flex-wrap: wrap; }
    .portal-content .table-responsive { max-width: 100%; }
    .portal-content .card-body .table:not([id]) { overflow-wrap: anywhere; }
    .portal-content .card-body .table:not([id]) { table-layout: fixed; width: 100%; }
    .portal-content .card-body .table:not([id]) th,
    .portal-content .card-body .table:not([id]) td { white-space: normal; overflow-wrap: anywhere; }
    .modal-dialog { max-width: calc(100% - 16px); margin: 8px auto; }
    .modal-body { overflow-wrap: anywhere; }
    .modal-footer { gap: 8px; }
    .modal-footer .btn { min-height: 44px; }
}

@media screen and (max-width: 767px) {
    .portal-content .p-4 { padding: 16px !important; }
    .portal-content h1, .portal-content h2 { overflow-wrap: anywhere; }
    .billing-actions, .booking-actions { flex-wrap: wrap; }
    .billing-list-summary { grid-template-columns: 1fr; }
    .portal-card-table { width: 100% !important; min-width: 0 !important; table-layout: auto !important; }
    /* Keep header semantics while displaying column names with each card field. */
    .portal-card-table > thead {
        position: absolute; width: 1px; height: 1px; padding: 0;
        overflow: hidden; clip-path: inset(50%); white-space: nowrap;
    }
    .portal-card-table > tbody { display: block; width: 100%; }
    .portal-card-table .portal-card-row {
        display: block; margin: 0 0 14px; border: 1px solid #d8e1ee;
        border-radius: 8px; background: white; overflow: hidden;
    }
    .portal-card-table .portal-card-row > td {
        display: none; width: auto !important; min-width: 0 !important; max-width: none !important;
        position: static !important; box-shadow: none !important;
        white-space: normal !important; overflow-wrap: anywhere; padding: 10px 12px;
    }
    .portal-card-table .portal-card-row > td.portal-card-summary,
    .portal-card-table .portal-card-expanded > td { display: block; }
    /* Existing permission-hidden cells must never be revealed by card expansion. */
    #billingRequestsTable.billing-hide-bc-private-columns .billing-bc-private-column { display: none; }
    .portal-card-table .portal-card-row > td::before {
        content: attr(data-mobile-label); display: block; margin-bottom: 4px;
        color: #526174; font-size: 12px; font-weight: 700;
    }
    .portal-row-toggle { display: block; margin-top: 10px; }
    .billing-row-actions { gap: 8px; }
    .billing-icon-action { min-height: 44px; }
    .login-card .password-toggle { width: 44px; height: 44px; right: 2px; }
    .login-card .login-field .form-control { padding-right: 50px; font-size: 16px; }
}

@media print {
    .portal-mobile-header, .portal-row-toggle { display: none !important; }
}