/* Document Flow & Data Structure Management - Professional Enterprise Skin */

:root {
    --primary-color: #3b82f6;
    --primary-light: #eff6ff;
    --primary-dark: #1d4ed8;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --info-color: #06b6d4;
    --surface-card: #ffffff;
    --surface-bg: #f8fafc;
    --surface-hover: #f1f5f9;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 6px;
    --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1);
    --shadow-md: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
}

/* Global Styles */
body {
    background-color: var(--surface-bg);
    color: var(--text-main);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
}

/* Flow Diagram Styles */
.flow-diagram-container {
    position: relative;
    padding: 30px;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.flow-node {
    position: relative;
    width: 160px;
    padding: 20px;
    text-align: center;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin: 0 auto;
}

.flow-node:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.flow-node::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
}

.customer-node {
    background: linear-gradient(135deg, #6366f1, #4f46e5);
    color: white;
}

.supplier-node {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
}

.quotation-node {
    background: linear-gradient(135deg, #06b6d4, #0891b2);
    color: white;
}

.po-node {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
    color: white;
}

.invoice-node {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
}

.payment-node {
    background: linear-gradient(135deg, #84cc16, #65a30d);
    color: white;
}

.flow-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
    display: block;
}

.flow-label {
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 1.1rem;
}

.flow-badge {
    font-size: 0.75rem;
    background: rgba(255, 255, 255, 0.2);
    padding: 3px 10px;
    border-radius: 20px;
    display: inline-block;
    font-weight: 500;
}

.flow-connector {
    position: relative;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 120px;
    margin: 20px 0;
}

.flow-connector i {
    font-size: 2rem;
    color: var(--border-color);
    transition: all 0.3s ease;
}

.customer-arrow { color: #6366f1 !important; }
.supplier-arrow { color: #f59e0b !important; }
.quotation-arrow { color: #06b6d4 !important; }
.po-arrow { color: #8b5cf6 !important; }

/* Flow Tree Styles */
.flow-tree-container {
    font-family: 'Inter', sans-serif;
}

.flow-tree-root {
    text-align: center;
    margin-bottom: 40px;
}

.flow-tree-node {
    display: flex;
    align-items: center;
    padding: 20px;
    margin-bottom: 15px;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--surface-card);
    border: 2px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.flow-tree-node:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.flow-tree-node-root {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    border: none;
    max-width: 400px;
    margin: 0 auto 50px;
    padding: 30px;
    box-shadow: var(--shadow-xl);
}

.flow-tree-node-root:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #1e3a8a 100%);
    box-shadow: 0 30px 60px -15px rgba(59, 130, 246, 0.4);
    transform: scale(1.02);
}

.flow-tree-icon {
    font-size: 32px;
    margin-right: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.15);
    flex-shrink: 0;
}

.flow-tree-node-root .flow-tree-icon {
    background: rgba(255, 255, 255, 0.2);
    font-size: 36px;
}

.flow-tree-content {
    flex: 1;
    min-width: 0;
}

.flow-tree-content h6 {
    margin: 0 0 10px 0;
    font-size: 1.2rem;
    font-weight: 600;
    line-height: 1.3;
}

.flow-tree-node-root .flow-tree-content h6 {
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.flow-tree-branch {
    margin-left: 40px;
    position: relative;
    padding-bottom: 30px;
}

.flow-tree-branch:before {
    content: '';
    position: absolute;
    left: -20px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--border-color), transparent);
    border-radius: 2px;
}

.flow-tree-branch-label {
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 25px;
    padding-left: 20px;
    position: relative;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 12px;
}

.flow-tree-branch-label:before {
    content: '';
    position: absolute;
    left: -20px;
    top: 50%;
    width: 20px;
    height: 3px;
    background: var(--border-color);
    transform: translateY(-50%);
    border-radius: 2px;
}

.flow-tree-branch-label i {
    color: var(--text-muted);
}

.flow-tree-nodes {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    padding-left: 20px;
}

.flow-tree-node-child {
    border-left: 4px solid var(--primary-color);
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.flow-tree-node-child:hover {
    border-left-width: 6px;
    padding-left: 18px;
}

/* Statistics Cards Enhancement */
.stat-card {
    border: none;
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s ease;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border: 1px solid var(--border-color);
    height: 100%;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.stat-card .card-body {
    padding: 30px;
    text-align: center;
}

.stat-card i {
    font-size: 3rem;
    margin-bottom: 20px;
    opacity: 0.9;
    display: block;
}

.stat-card h4 {
    font-size: 2.5rem;
    font-weight: 800;
    margin: 15px 0;
    background: linear-gradient(135deg, var(--text-main), var(--text-muted));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-card p {
    color: var(--text-muted);
    font-size: 1rem;
    font-weight: 500;
    margin: 0;
}

/* Trace Modal Tabs */
#traceTabs .nav-link {
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-muted);
    font-weight: 600;
    padding: 15px 20px;
    transition: all 0.3s ease;
    border-radius: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

#traceTabs .nav-link:hover {
    color: var(--primary-color);
    border-bottom-color: var(--border-color);
    background-color: var(--surface-hover);
}

#traceTabs .nav-link.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    background-color: transparent;
}

/* Trace Results Styling */
#traceResults .card {
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all 0.3s ease;
}

#traceResults .card-header {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-bottom: 2px solid var(--border-color);
    padding: 20px;
    font-weight: 700;
}

#traceResults .card-body {
    padding: 25px;
}

#traceResults .badge {
    font-size: 0.85rem;
    padding: 6px 12px;
    font-weight: 600;
}

/* Card Styling */
.card {
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    background-color: var(--surface-card);
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card-header {
    background-color: var(--surface-card);
    border-bottom: 1px solid var(--border-color);
    padding: 1.25rem 1.5rem;
    font-weight: 700;
}

.card-body {
    padding: 1.5rem;

}

/* Table Navigation */
.table-nav-item {
    border-radius: var(--radius-md) !important;
    margin-bottom: 8px;
    padding: 16px 20px;
    font-weight: 600;
    color: var(--text-muted) !important;
    border: 1px solid transparent !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    background: var(--surface-card);
}

.table-nav-item:hover {
    background-color: var(--primary-light) !important;
    color: var(--primary-color) !important;
    transform: translateX(8px);
    border-color: var(--primary-light) !important;
}

.table-nav-item.active {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
    color: white !important;
    border-color: var(--primary-color) !important;
    box-shadow: var(--shadow-md);
}

.table-nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 5px;
    background: white;
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

/* Table Styling */
.table-responsive {
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    background: var(--surface-card);
    overflow: hidden;
    position: relative;
}

#dataTable {
    margin-bottom: 0;
    width: 100%;
}

#dataTable thead th {
    background: linear-gradient(135deg, #fcfdfe 0%, #f8fafc 100%);
    text-transform: uppercase;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    padding: 20px 16px;
    border-bottom: 2px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 10;
    white-space: nowrap;
    border-top: none;
}

#dataTable tbody td {
    padding: 18px 16px;
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s;
    font-size: 0.95rem;
    background-color: var(--surface-card);
}

#dataTable tbody tr {
    transition: all 0.2s;
}

#dataTable tbody tr:hover {
    background-color: var(--primary-light);
    transform: scale(1.005);
}

#dataTable tbody tr:hover td {
    background-color: var(--primary-light);
}

#dataTable tbody tr:last-child td {
    border-bottom: none;
}

/* Action Buttons */
.action-buttons {
    opacity: 0.7;
    transition: opacity 0.2s;
    white-space: nowrap;
}

tr:hover .action-buttons {
    opacity: 1;
}

.action-buttons .btn {
    padding: 6px 10px;
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.action-buttons .btn:hover {
    transform: translateY(-1px);
}

/* Badges */
.badge {
    padding: 6px 12px;
    font-size: 0.8rem;
    font-weight: 700;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

/* Form Controls */
.form-control, .form-select {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    font-size: 0.95rem;
    transition: all 0.3s;
    background: var(--surface-card);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
    outline: none;
    transform: translateY(-1px);
}

/* Pagination */
.pagination {
    margin-bottom: 0;
}

.page-link {
    border-radius: var(--radius-sm) !important;
    border: 1px solid var(--border-color);
    margin: 0 4px;
    color: var(--text-muted);
    font-size: 0.9rem;
    padding: 8px 14px;
    font-weight: 600;
    transition: all 0.2s;
    background-color: var(--surface-card);
}

.page-link:hover {
    background-color: var(--primary-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
}

.page-item.active .page-link {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-color: var(--primary-color);
    color: white;
}

/* Loading State */
#loadingState {
    padding: 4rem 1rem;
    text-align: center;
}

.spinner-border {
    width: 3.5rem;
    height: 3.5rem;
    border-width: 3px;
}

/* Empty State */
#emptyState {
    padding: 4rem 1rem;
    text-align: center;
}

#emptyState .display-6 {
    font-size: 4rem;
    opacity: 0.3;
    margin-bottom: 1.5rem;
}

/* Modal Styling */
.modal-content {
    border-radius: var(--radius-lg);
    border: none;
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    background-color: var(--surface-card);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.modal-title {
    font-weight: 700;
    color: var(--text-main);
}

.modal-body {
    padding: 2rem;
    background-color: var(--surface-card);
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

/* Toast Notifications */
.toast-container {
    z-index: 9999;
}

.toast {
    border-radius: var(--radius-md);
    border: none;
    box-shadow: var(--shadow-lg);
    font-weight: 500;
}

/* Custom Scrollbar */
.table-responsive::-webkit-scrollbar,
.flow-tree-nodes::-webkit-scrollbar,
.modal-body::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

.table-responsive::-webkit-scrollbar-track,
.flow-tree-nodes::-webkit-scrollbar-track,
.modal-body::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 5px;
}

.table-responsive::-webkit-scrollbar-thumb,
.flow-tree-nodes::-webkit-scrollbar-thumb,
.modal-body::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 5px;
}

.table-responsive::-webkit-scrollbar-thumb:hover,
.flow-tree-nodes::-webkit-scrollbar-thumb:hover,
.modal-body::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.05);
    }
}

.flow-node {
    animation: fadeIn 0.5s ease forwards;
}

.table-nav-item {
    animation: slideIn 0.4s ease forwards;
}

.loading-pulse {
    animation: pulse 1.5s ease-in-out infinite;
}

/* Alert Styling */
.alert {
    border-radius: var(--radius-md);
    border: none;
    padding: 16px 20px;
    font-weight: 500;
}

.alert-dismissible .btn-close {
    padding: 1rem;
}

/* Color Utilities */
.text-primary { color: var(--primary-color) !important; }
.text-success { color: var(--success-color) !important; }
.text-warning { color: var(--warning-color) !important; }
.text-danger { color: var(--danger-color) !important; }
.text-info { color: var(--info-color) !important; }

.bg-primary { background-color: var(--primary-color) !important; }
.bg-success { background-color: var(--success-color) !important; }
.bg-warning { background-color: var(--warning-color) !important; }
.bg-danger { background-color: var(--danger-color) !important; }
.bg-info { background-color: var(--info-color) !important; }

.bg-primary-light { background-color: var(--primary-light) !important; }

/* Tab Content Styling */
.tab-content {
    background: var(--surface-card);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    border: 1px solid var(--border-color);
    border-top: none;
    padding: 2rem;
}

/* Document Type Colors */
.bg-quotation { background-color: var(--info-color) !important; }
.bg-invoice { background-color: var(--success-color) !important; }
.bg-purchase-order { background-color: var(--warning-color) !important; }
.bg-payment { background-color: #84cc16 !important; }

.text-quotation { color: var(--info-color) !important; }
.text-invoice { color: var(--success-color) !important; }
.text-purchase-order { color: var(--warning-color) !important; }
.text-payment { color: #84cc16 !important; }

/* Button Enhancements */
.btn {
    border-radius: var(--radius-md);
    font-weight: 600;
    padding: 10px 20px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.875rem;
}

.btn-outline-primary:hover {
    background-color: var(--primary-color);
    color: white;
}

/* Responsive Design */
@media (max-width: 1199.98px) {
    .flow-tree-nodes {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .flow-node {
        width: 140px;
        padding: 15px;
    }
}

@media (max-width: 991.98px) {
    .flow-diagram-container {
        padding: 20px;
    }
    
    .flow-node {
        width: 130px;
        padding: 12px;
        margin-bottom: 20px;
    }
    
    .flow-icon {
        font-size: 2rem;
    }
    
    .flow-label {
        font-size: 1rem;
    }
    
    .flow-connector {
        flex-direction: column;
        height: auto;
        gap: 20px;
        margin: 20px 0;
    }
    
    .flow-connector i {
        transform: rotate(90deg);
    }
    
    .flow-tree-branch {
        margin-left: 20px;
    }
    
    .flow-tree-nodes {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 15px;
    }
    
    .flow-tree-node {
        padding: 15px;
    }
    
    .flow-tree-icon {
        width: 50px;
        height: 50px;
        font-size: 24px;
        margin-right: 15px;
    }
    
    /* Table Responsiveness */
    #dataTable {
        font-size: 0.9rem;
    }
    
    #dataTable thead th,
    #dataTable tbody td {
        padding: 14px 10px;
    }
    
    /* Hide less important columns on tablet */
    #dataTable thead th:nth-child(n+6),
    #dataTable tbody td:nth-child(n+6) {
        display: none;
    }
}

@media (max-width: 767.98px) {
    /* Ensure background consistency on mobile */
    body {
        background-color: var(--surface-bg);
    }
    
    .container-fluid {
        padding-left: 1rem;
        padding-right: 1rem;
    }
    
    /* Card consistency */
    .card,
    .stat-card,
    .modal-content,
    .tab-content,
    .table-responsive,
    .flow-diagram-container {
        background-color: var(--surface-card);
    }
    
    .card-body {
        padding: 1.25rem;

    }
    
    .stat-card .card-body {
        padding: 20px;
    }
    
    .stat-card i {
        font-size: 2.5rem;
    }
    
    .stat-card h4 {
        font-size: 2rem;
    }
    
    /* Table row backgrounds */
    #dataTable tbody td {
        background-color: var(--surface-card);
    }
    
    #dataTable tbody tr:hover td {
        background-color: var(--primary-light);
    }
    
    /* Form backgrounds */
    .form-control, .form-select {
        background-color: var(--surface-card);
    }
    
    /* Stack buttons on mobile */
    .btn-group {
        flex-wrap: wrap;
        gap: 8px;
    }
    
    .btn-group .btn {
        margin-bottom: 8px;
    }
    
    /* Adjust pagination for mobile */
    .pagination {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .page-link {
        padding: 6px 10px;
        font-size: 0.85rem;
        margin: 3px;
        background-color: var(--surface-card);
    }
    
    /* Flow tree adjustments */
    .flow-tree-branch {
        margin-left: 15px;
    }
    
    .flow-tree-nodes {
        grid-template-columns: 1fr;
        gap: 10px;
    }
    
    .flow-tree-node {
        padding: 12px;
        background-color: var(--surface-card);
    }
    
    .flow-tree-icon {
        width: 40px;
        height: 40px;
        font-size: 20px;
        margin-right: 12px;
    }
    
    /* Modal adjustments */
    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 1.25rem;
    }
    
    .modal-body {
        background-color: var(--surface-card);
    }
}

@media (max-width: 576px) {
    /* Ensure background consistency on very small screens */
    body {
        background-color: var(--surface-bg);
    }
    
    h1.h2 {
        font-size: 1.5rem;
    }
    
    h5 {
        font-size: 1.1rem;
    }
    
    .flow-node {
        width: 120px;
        padding: 10px;
        margin-bottom: 15px;
        background-color: var(--surface-card);
    }
    
    .flow-icon {
        font-size: 1.8rem;
        margin-bottom: 10px;
    }
    
    .flow-label {
        font-size: 0.9rem;
        margin-bottom: 5px;
    }
    
    .flow-badge {
        font-size: 0.7rem;
        padding: 2px 8px;
    }
    
    /* Make table more compact */
    #dataTable {
        font-size: 0.85rem;
    }
    
    #dataTable thead th,
    #dataTable tbody td {
        padding: 10px 8px;
    }
    
    /* Hide more columns on very small screens */
    #dataTable thead th:nth-child(n+4),
    #dataTable tbody td:nth-child(n+4) {
        display: none;
    }
    
    .action-buttons {
        opacity: 1; /* Always show on mobile */
    }
    
    .action-buttons .btn {
        padding: 4px 8px;
        font-size: 0.8rem;
    }
    
    /* Statistics cards stack */
    .stat-card .card-body {
        padding: 15px;
    }
    
    .stat-card i {
        font-size: 2rem;
        margin-bottom: 10px;
    }
    
    .stat-card h4 {
        font-size: 1.8rem;
        margin: 10px 0;
    }
    
    /* Tab styling for mobile */
    #traceTabs .nav-link {
        padding: 12px 15px;
        font-size: 0.9rem;
    }
    
    /* Flow tree mobile adjustments */
    .flow-tree-node-root {
        padding: 20px;
        margin-bottom: 30px;
    }
    
    .flow-tree-node-root .flow-tree-icon {
        width: 40px;
        height: 40px;
        font-size: 24px;
        margin-right: 15px;
    }
    
    .flow-tree-node-root .flow-tree-content h6 {
        font-size: 1.2rem;
    }
    
    .flow-tree-branch-label {
        font-size: 1rem;
        margin-bottom: 15px;
        padding-left: 15px;
    }
    
    /* Modal content backgrounds */
    .modal-content,
    .modal-body,
    .card,
    .stat-card {
        background-color: var(--surface-card);
    }
}

/* Utility Classes */
.text-muted {
    color: var(--text-muted) !important;
}

.bg-light {
    background-color: var(--surface-bg) !important;
}

.border {
    border-color: var(--border-color) !important;
}

/* Custom focus states */
:focus-visible {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Print Styles */
@media print {
    .card {
        border: 1px solid #ddd !important;
        box-shadow: none !important;
        background-color: white !important;
    }
    
    .table-responsive {
        border: 1px solid #ddd !important;
        box-shadow: none !important;
    }
    
    .action-buttons,
    .btn,
    .dropdown,
    .flow-node,
    .flow-connector {
        display: none !important;
    }
    
    #dataTable thead th {
        background: #f5f5f5 !important;
        color: #000 !important;
    }
    
    #dataTable tbody td {
        background-color: white !important;
    }
    
    .modal {
        position: static !important;
        display: block !important;
        overflow: visible !important;
    }
    
    .modal-dialog {
        max-width: 100% !important;
        margin: 0 !important;
    }
    
    .modal-content {
        box-shadow: none !important;
        border: 1px solid #ddd !important;
        background-color: white !important;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --surface-bg: #0f172a;
        --surface-card: #1e293b;
        --surface-hover: #334155;
        --text-main: #f1f5f9;
        --text-muted: #94a3b8;
        --border-color: #334155;
        --primary-light: #1e3a8a;
    }
    
    .flow-diagram-container {
        background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
        border-color: var(--border-color);
    }
    
    .stat-card {
        background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
        border-color: var(--border-color);
    }
    
    .stat-card h4 {
        background: linear-gradient(135deg, #f1f5f9, #cbd5e1);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
    }
    
    .card-header {
        background-color: var(--surface-card);
        border-bottom-color: var(--border-color);
    }
    
    .table-responsive {
        background: var(--surface-card);
        border-color: var(--border-color);
    }
    
    #dataTable thead th {
        background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
        color: var(--text-muted);
        border-bottom-color: var(--border-color);
    }
    
    #dataTable tbody td {
        border-bottom-color: var(--border-color);
        background-color: var(--surface-card);
    }
    
    .table-nav-item {
        background: var(--surface-card);
        color: var(--text-muted) !important;
    }
    
    .table-nav-item:hover {
        background-color: var(--primary-light) !important;
    }
    
    .form-control, .form-select {
        background: var(--surface-card);
        border-color: var(--border-color);
        color: var(--text-main);
    }
    
    .modal-header, .modal-footer {
        background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
        border-color: var(--border-color);
    }
    
    .modal-content {
        background: var(--surface-card);
        color: var(--text-main);
    }
    
    .modal-body {
        background: var(--surface-card);
    }
    
    .nav-tabs .nav-link {
        background: var(--surface-card);
        color: var(--text-muted);
    }
    
    .nav-tabs .nav-link.active {
        background: var(--surface-card);
        color: var(--primary-color);
        border-color: var(--primary-color);
    }
    
    .tab-content {
        background: var(--surface-card);
        border-color: var(--border-color);
    }
    
    .page-link {
        background-color: var(--surface-card);
        color: var(--text-muted);
        border-color: var(--border-color);
    }
    
    .card, .stat-card, .flow-tree-node {
        background: var(--surface-card);
    }
}