/* Shared panel system */
.panel-card {
    background: var(--cas-surface-muted);
    border: 1px solid var(--cas-border-strong);
    border-radius: var(--cas-radius-xl);
    box-shadow: var(--cas-shadow);
    overflow: hidden;
}

.panel-card--full {
    margin-bottom: 1.25rem;
}

.panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--cas-space-md) 1.25rem;
    border-bottom: 1px solid var(--cas-border-strong);
    background: rgba(5, 39, 103, 0.03);
    flex-wrap: wrap;
    gap: var(--cas-space-sm);
}

.panel-title {
    display: flex;
    align-items: center;
    gap: var(--cas-space-sm);
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--cas-text);
    margin: 0;
}

.panel-title i {
    color: var(--cas-primary);
}

.panel-link {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--cas-primary);
    text-decoration: none;
    transition: opacity var(--cas-transition);
}

.panel-link:hover {
    opacity: 0.75;
    text-decoration: none;
}

.panel-body {
    padding: 0;
}

.panel-body--padded {
    padding: 1.25rem;
    background: #fcfdfe;
}

.panel-table {
    width: 100%;
    margin: 0;
    font-size: var(--cas-font-size-sm);
}

.panel-table thead th {
    background: #e9edf3;
    border-bottom: 1px solid var(--cas-border-strong);
    color: var(--cas-text-muted);
    font-weight: 600;
    font-size: var(--cas-font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 0.75rem 1.25rem;
    white-space: nowrap;
}

.panel-table tbody td {
    padding: 0.875rem 1.25rem;
    border-bottom: 1px solid var(--cas-border-strong);
    vertical-align: middle;
}

.panel-table tbody tr:last-child td {
    border-bottom: none;
}

.panel-table tbody tr:hover {
    background: rgba(5, 39, 103, 0.04);
}

.panel-table a {
    color: var(--cas-primary);
    font-weight: 600;
    text-decoration: none;
}

.panel-table a:hover {
    text-decoration: underline;
}

/* Grid & table action buttons */
.grid-actions {
    display: inline-flex;
    flex-wrap: nowrap;
    gap: 0.25rem;
    align-items: center;
    white-space: nowrap;
}

.grid-actions .btn {
    flex-shrink: 0;
}

.btn-grid-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.25rem 0.5rem;
    min-width: 2rem;
    line-height: 1;
}

.btn-grid-icon i {
    font-size: 0.875rem;
}

/* Prevent action columns from squeezing buttons onto multiple lines */
.table td:has(.grid-actions),
.table th:has(.grid-actions) {
    white-space: nowrap;
    width: 1%;
}

/* Info grid */
.info-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
    margin-bottom: 1.25rem;
}

@media (max-width: 767.98px) {
    .info-grid {
        grid-template-columns: 1fr;
    }
}

/* Page header / toolbar */
.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--cas-space-md);
    margin-bottom: var(--cas-space-lg);
    flex-wrap: wrap;
}

.page-header__title {
    font-size: var(--cas-font-size-xl);
    font-weight: 700;
    color: var(--cas-text);
    margin: 0 0 var(--cas-space-xs);
    letter-spacing: -0.02em;
}

.page-header__subtitle {
    color: var(--cas-text-muted);
    margin: 0;
    font-size: 0.95rem;
}

.page-header__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--cas-space-sm);
    align-items: center;
}

.page-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--cas-text-muted);
    font-size: var(--cas-font-size-sm);
    text-decoration: none;
    margin-bottom: 0.75rem;
    transition: color var(--cas-transition);
}

.page-back-link:hover {
    color: var(--cas-primary);
}

/* Status badges */
.status-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    border-radius: var(--cas-radius-pill);
    font-size: var(--cas-font-size-xs);
    font-weight: 600;
    text-transform: capitalize;
}

.status-badge--open,
.status-badge--sent {
    background: rgba(14, 165, 233, 0.12);
    color: var(--cas-info);
}

.status-badge--draft {
    background: rgba(100, 116, 139, 0.12);
    color: #475569;
}

.status-badge--approved,
.status-badge--paid {
    background: rgba(16, 185, 129, 0.12);
    color: var(--cas-success);
}

.status-badge--warning {
    background: rgba(245, 158, 11, 0.12);
    color: var(--cas-warning);
}

/* Empty state */
.empty-state {
    padding: 2.5rem 1.25rem;
    text-align: center;
    color: var(--cas-text-muted);
}

.empty-state i {
    font-size: 2rem;
    opacity: 0.35;
    display: block;
    margin-bottom: var(--cas-space-sm);
}

.empty-state p {
    margin: 0;
    font-size: var(--cas-font-size-sm);
}

/* Stacked card table for mobile */
@media (max-width: 575.98px) {
    .table-responsive-stack table.panel-table,
    .table-responsive-stack table.table {
        border: 0;
    }

    .table-responsive-stack table.panel-table thead,
    .table-responsive-stack table.table thead {
        display: none;
    }

    .table-responsive-stack table.panel-table tbody tr,
    .table-responsive-stack table.table tbody tr {
        display: block;
        margin-bottom: var(--cas-space-md);
        border: 1px solid var(--cas-border-strong);
        border-radius: var(--cas-radius-lg);
        background: var(--cas-surface);
        box-shadow: var(--cas-shadow);
        overflow: hidden;
    }

    .table-responsive-stack table.panel-table tbody td,
    .table-responsive-stack table.table tbody td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: var(--cas-space-md);
        padding: 0.75rem 1rem;
        border-bottom: 1px solid var(--cas-border);
        text-align: right;
    }

    .table-responsive-stack table.panel-table tbody td::before,
    .table-responsive-stack table.table tbody td::before {
        content: attr(data-label);
        font-weight: 600;
        font-size: var(--cas-font-size-xs);
        text-transform: uppercase;
        letter-spacing: 0.04em;
        color: var(--cas-text-muted);
        text-align: left;
        flex-shrink: 0;
    }

    .table-responsive-stack table.panel-table tbody td:last-child,
    .table-responsive-stack table.table tbody td:last-child {
        border-bottom: none;
        justify-content: flex-end;
    }

    .table-responsive-stack table.panel-table tbody td:last-child::before,
    .table-responsive-stack table.table tbody td:last-child:empty::before {
        display: none;
    }
}

/* Line item form inputs */
.line-qty { width: 70px; min-width: 60px; }
.line-price { width: 100px; min-width: 80px; }
.line-discount { width: 90px; min-width: 70px; }

@media (max-width: 767.98px) {
    .line-qty,
    .line-price,
    .line-discount {
        width: 100%;
        min-width: 0;
    }
}

/* Detail definition list */
.detail-dl {
    margin: 0;
}

.detail-dl__row {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 0.5rem 1rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--cas-border);
}

.detail-dl__row:last-child {
    border-bottom: none;
}

.detail-dl__row dt {
    font-size: var(--cas-font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--cas-text-muted);
    margin: 0;
}

.detail-dl__row dd {
    margin: 0;
    color: var(--cas-text);
}

@media (max-width: 575.98px) {
    .detail-dl__row {
        grid-template-columns: 1fr;
        gap: 0.25rem;
    }
}

.detail-page {
    background: var(--cas-bg);
    border-radius: var(--cas-radius-lg);
    padding: var(--cas-space-lg);
    margin: -0.25rem -0.5rem 0;
}

/* Focus states */
a:focus-visible,
button:focus-visible,
.btn:focus-visible,
.nav-link:focus-visible,
.form-control:focus-visible,
.form-select:focus-visible {
    outline: 2px solid var(--cas-primary);
    outline-offset: 2px;
}

/* Touch targets on mobile */
@media (max-width: 767.98px) {
    .nav-item ::deep .nav-link,
    .btn-sm {
        min-height: 44px;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print styles */
@media print {
    .sidebar,
    .sidebar-backdrop,
    .top-row,
    .footer,
    .nav-toggle,
    .page-header__actions,
    .invoice-toolbar,
    .invoice-form-actions--sticky {
        display: none !important;
    }

    .page,
    main,
    .content {
        display: block !important;
        margin: 0 !important;
        padding: 0 !important;
    }

    .panel-card {
        box-shadow: none;
        border: 1px solid #ccc;
        break-inside: avoid;
    }
}