:root {
    color-scheme: light dark;
    --sidebar-width: 220px;
    --page-bg: #eaf1ff;
    --surface-bg: #f8fbff;
    --surface-muted: #edf4ff;
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --border-color: #c8d8f0;

    --sidebar-bg: #e4eeff;
    --sidebar-text: #0f172a;
    --sidebar-text-muted: #1e3a5f;
    --sidebar-hover-bg: #d6e6ff;
    --sidebar-hover-text: #0f172a;
    --sidebar-active: #0b5ed7;

    --link-color: #0b5ed7;
    --link-hover: #0846a9;
    --table-header-accent: var(--border-color);

    --shadow-sm: 0 0.15rem 1.75rem rgba(58, 59, 69, 0.15);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.1);
}

@media (prefers-color-scheme: dark) {
    :root {
        --page-bg: #0f141a;
        --surface-bg: #161d26;
        --surface-muted: #1d2631;
        --text-main: #e5e7eb;
        --text-muted: #9ca3af;
        --border-color: #2f3b4a;

        --sidebar-bg: #111820;
        --sidebar-text: #e5e7eb;
        --sidebar-text-muted: #c7ced8;
        --sidebar-hover-bg: #273445;
        --sidebar-hover-text: #ffffff;
        --sidebar-active: #ffd54d;

        --link-color: #7cb8ff;
        --link-hover: #a6ceff;
        --table-header-accent: #ffd54d;

        --shadow-sm: 0 0.2rem 1.5rem rgba(0, 0, 0, 0.45);
        --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.45);
    }
}

:root[data-theme="light"] {
    --page-bg: #eaf1ff;
    --surface-bg: #f8fbff;
    --surface-muted: #edf4ff;
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --border-color: #c8d8f0;
    --sidebar-bg: #e4eeff;
    --sidebar-text: #0f172a;
    --sidebar-text-muted: #1e3a5f;
    --sidebar-hover-bg: #d6e6ff;
    --sidebar-hover-text: #0f172a;
    --sidebar-active: #0b5ed7;
    --link-color: #0b5ed7;
    --link-hover: #0846a9;
    --table-header-accent: var(--border-color);
    --shadow-sm: 0 0.15rem 1.75rem rgba(58, 59, 69, 0.15);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.1);
}

:root[data-theme="dark"] {
    --page-bg: #0f141a;
    --surface-bg: #161d26;
    --surface-muted: #1d2631;
    --text-main: #e5e7eb;
    --text-muted: #9ca3af;
    --border-color: #2f3b4a;
    --sidebar-bg: #111820;
    --sidebar-text: #e5e7eb;
    --sidebar-text-muted: #c7ced8;
    --sidebar-hover-bg: #273445;
    --sidebar-hover-text: #ffffff;
    --sidebar-active: #ffd54d;
    --link-color: #7cb8ff;
    --link-hover: #a6ceff;
    --table-header-accent: #ffd54d;
    --shadow-sm: 0 0.2rem 1.5rem rgba(0, 0, 0, 0.45);
    --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.45);
}

html,
body {
    height: 100%;
    margin: 0;
    background: var(--page-bg);
    color: var(--text-main);
    width: 100%;
    max-width: 100%;
    overflow-x: hidden;
}

.wrapper {
    display: flex;
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
}

.container-fluid {
    width: 100% !important;
    max-width: 100% !important;
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--sidebar-bg) !important;
    color: var(--sidebar-text) !important;
    min-height: 100vh;
    transition: all 0.3s ease-in-out;
    position: fixed;
    z-index: 1050;
}

#mainSidebarMobile {
    background: var(--sidebar-bg) !important;
    color: var(--sidebar-text) !important;
}

.sidebar-brand {
    padding: 1rem;
    text-align: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.sidebar .nav-link,
.sidebar-link {
    color: var(--sidebar-text-muted) !important;
    transition: all 0.2s ease-in-out;
}

#mainSidebarDesktop .sidebar-section-label,
#mainSidebarMobile .sidebar-section-label {
    color: var(--sidebar-text-muted) !important;
    letter-spacing: 0.08em;
}

#mainSidebarMobile .nav-link,
#mainSidebarMobile .sidebar-link {
    color: var(--sidebar-text-muted) !important;
}

.sidebar .nav-link:hover,
.sidebar-link:hover {
    background-color: var(--sidebar-hover-bg);
    color: var(--sidebar-hover-text) !important;
    border-radius: 4px;
}

#mainSidebarMobile .nav-link:hover,
#mainSidebarMobile .sidebar-link:hover {
    background-color: var(--sidebar-hover-bg);
    color: var(--sidebar-hover-text) !important;
    border-radius: 4px;
}

.sidebar .nav-link.active,
.sidebar .nav-link.active-parent {
    color: var(--sidebar-active) !important;
    font-weight: 600;
}

#mainSidebarMobile .nav-link.active,
#mainSidebarMobile .nav-link.active-parent {
    color: var(--sidebar-active) !important;
    font-weight: 600;
}

.main {
    margin-left: var(--sidebar-width);
    width: calc(100% - var(--sidebar-width));
    max-width: calc(100vw - var(--sidebar-width));
    box-sizing: border-box;
    padding: 20px;
    background: var(--page-bg);
    min-height: 100vh;
    overflow-x: hidden;
}

.topbar,
.navbar.topbar {
    background-color: var(--surface-bg) !important;
    color: var(--text-main) !important;
    border: 1px solid var(--border-color);
    overflow: visible;
}

.topbar h4,
.topbar .nav-link,
.topbar .dropdown-toggle,
.topbar .small {
    color: var(--text-main) !important;
}

.theme-option.active,
.theme-option:active {
    background: var(--link-color);
    color: #fff;
}

.dropdown-menu {
    background: var(--surface-bg);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    z-index: 3000;
    width: min(360px, calc(100vw - 16px));
    max-width: calc(100vw - 16px);
    overflow-x: hidden;
    box-sizing: border-box;
}

.dropdown-item {
    color: var(--text-main);
    white-space: normal;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.dropdown-item:hover,
.dropdown-item:focus {
    background: var(--surface-muted);
    color: var(--text-main);
}

.dropdown-divider {
    border-top-color: var(--border-color);
}

.dropdown-menu-end[data-bs-popper] {
    right: 0;
    left: auto;
}

.user-dropdown-menu {
    right: 0 !important;
    left: auto !important;
    transform-origin: top right;
}

.card,
.auth-card {
    background: var(--surface-bg);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    border-radius: 0.35rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

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

.card-header {
    border-bottom: 1px solid var(--border-color);
    background: var(--surface-muted);
}

.card-header h6,
.card-header .font-weight-bold,
.card-header .m-0 {
    color: var(--sidebar-active) !important;
}

.table,
.table-responsive {
    color: var(--text-main);
}

.table-responsive {
    overflow-x: auto;
}

/* DataTables global theme integration */
.dataTables_wrapper,
.dataTables_wrapper .dataTables_info,
.dataTables_wrapper .dataTables_length,
.dataTables_wrapper .dataTables_filter {
    color: var(--text-main) !important;
}

.dataTables_wrapper .dataTables_length label,
.dataTables_wrapper .dataTables_filter label {
    margin: 0;
    font-weight: 500;
}

.dataTables_wrapper .dataTables_length select,
.dataTables_wrapper .dataTables_filter input {
    background: var(--surface-bg) !important;
    color: var(--text-main) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: 4px !important;
    min-height: 32px;
}

table.dataTable,
table.dataTable thead th,
table.dataTable tbody td {
    color: var(--text-main) !important;
    border-color: var(--border-color) !important;
}

:root[data-theme="dark"] .table thead th,
:root[data-theme="dark"] table.dataTable thead th {
    color: #7cb8ff !important;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .table thead th,
    :root:not([data-theme="light"]) table.dataTable thead th {
        color: #7cb8ff !important;
    }
}

.table,
table.dataTable {
    --bs-table-bg: var(--surface-bg);
    --bs-table-color: var(--text-main);
    --bs-table-border-color: var(--border-color);
    --bs-table-striped-bg: color-mix(in srgb, var(--surface-bg) 92%, var(--surface-muted) 8%);
    --bs-table-striped-color: var(--text-main);
    --bs-table-hover-bg: color-mix(in srgb, var(--surface-muted) 82%, var(--surface-bg) 18%);
    --bs-table-hover-color: var(--text-main);
}

.table > :not(caption) > * > *,
table.dataTable > :not(caption) > * > * {
    background-color: var(--bs-table-bg) !important;
    color: var(--bs-table-color) !important;
    border-color: var(--bs-table-border-color) !important;
    box-shadow: none !important;
}

:root[data-theme="dark"] .table > thead > tr > th,
:root[data-theme="dark"] table.dataTable > thead > tr > th {
    color: #7cb8ff !important;
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) .table > thead > tr > th,
    :root:not([data-theme="light"]) table.dataTable > thead > tr > th {
        color: #7cb8ff !important;
    }
}

.dataTables_wrapper .dataTables_paginate .paginate_button {
    color: var(--text-main) !important;
    border: 1px solid var(--border-color) !important;
    background: var(--surface-bg) !important;
    border-radius: 4px;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current,
.dataTables_wrapper .dataTables_paginate .paginate_button.current:hover {
    color: #fff !important;
    border-color: var(--link-color) !important;
    background: var(--link-color) !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button:hover {
    color: var(--text-main) !important;
    border-color: var(--link-color) !important;
    background: var(--surface-muted) !important;
}

.dataTables_wrapper .dataTables_paginate .paginate_button.disabled,
.dataTables_wrapper .dataTables_paginate .paginate_button.disabled:hover {
    color: var(--text-muted) !important;
    background: color-mix(in srgb, var(--surface-bg) 75%, transparent) !important;
    border-color: var(--border-color) !important;
}

.dataTables_wrapper .dataTables_paginate .pagination {
    margin: 0;
    gap: 0;
}

.dataTables_wrapper .dataTables_paginate .page-item .page-link {
    background: var(--surface-bg);
    color: var(--text-main);
    border-color: var(--border-color);
}

.dataTables_wrapper .dataTables_paginate .page-item.active .page-link {
    background: var(--link-color);
    color: #fff;
    border-color: var(--link-color);
}

.dataTables_wrapper .dataTables_paginate .page-item .page-link:hover,
.dataTables_wrapper .dataTables_paginate .page-item .page-link:focus {
    background: var(--surface-muted);
    color: var(--text-main);
    border-color: var(--link-color);
    box-shadow: none;
}

.dataTables_wrapper .dataTables_paginate .page-item.disabled .page-link {
    background: color-mix(in srgb, var(--surface-bg) 75%, transparent);
    color: var(--text-muted);
    border-color: var(--border-color);
}

.badge {
    font-weight: 500;
}

.alert.alert-info {
    color: color-mix(in srgb, #0c4a6e 72%, var(--text-main) 28%);
    background: color-mix(in srgb, #0ea5e9 16%, var(--surface-bg) 84%);
    border: 1px solid color-mix(in srgb, #0ea5e9 38%, var(--border-color) 62%);
}

.diagnostic-page .diag-result {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 14px;
}

.diagnostic-page .diag-result.alert-success {
    color: color-mix(in srgb, #198754 28%, var(--text-main) 72%);
    background: color-mix(in srgb, #198754 12%, var(--surface-bg) 88%);
    border-color: color-mix(in srgb, #198754 30%, var(--border-color) 70%);
}

.diagnostic-page .diag-result.alert-warning {
    color: color-mix(in srgb, #f59e0b 32%, var(--text-main) 68%);
    background: color-mix(in srgb, #f59e0b 12%, var(--surface-bg) 88%);
    border-color: color-mix(in srgb, #f59e0b 32%, var(--border-color) 68%);
}

.diagnostic-page .diag-title {
    margin-bottom: 8px;
}

.diagnostic-page .diag-meta {
    color: var(--text-muted) !important;
    margin-top: 8px;
    margin-bottom: 8px;
    line-height: 1.4;
}

.diagnostic-page .diag-pre {
    white-space: pre-wrap;
    word-break: break-word;
    overflow-wrap: anywhere;
    background: color-mix(in srgb, var(--surface-muted) 78%, transparent);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 10px 12px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    line-height: 1.4;
}

.diagnostic-page input:not([type="checkbox"]):not([type="radio"]),
.diagnostic-page select,
.diagnostic-page textarea,
.diagnostic-page .form-control,
.diagnostic-page .form-select {
    background-color: var(--surface-bg) !important;
    color: var(--text-main) !important;
    border-color: var(--border-color) !important;
}

.diagnostic-page input:not([type="checkbox"]):not([type="radio"]):focus,
.diagnostic-page select:focus,
.diagnostic-page textarea:focus,
.diagnostic-page .form-control:focus,
.diagnostic-page .form-select:focus {
    background-color: var(--surface-bg) !important;
    color: var(--text-main) !important;
    border-color: var(--link-color) !important;
}

.diagnostic-page input:-webkit-autofill,
.diagnostic-page input:-webkit-autofill:hover,
.diagnostic-page input:-webkit-autofill:focus,
.diagnostic-page textarea:-webkit-autofill,
.diagnostic-page select:-webkit-autofill {
    -webkit-text-fill-color: var(--text-main) !important;
    -webkit-box-shadow: 0 0 0px 1000px var(--surface-bg) inset !important;
    transition: background-color 9999s ease-out 0s;
}

a {
    color: var(--link-color);
}

a:hover {
    color: var(--link-hover);
}

.main-footer {
    margin-top: auto;
    margin-left: var(--sidebar-width);
    width: calc(100% - var(--sidebar-width));
    max-width: calc(100vw - var(--sidebar-width));
    box-sizing: border-box;
    background-color: var(--surface-muted);
    color: var(--text-main);
    padding: 8px 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}

.footer-section {
    flex: 1;
    min-width: 200px;
    margin-bottom: 6px;
}

.footer-section h3 {
    font-size: 0.95rem;
    font-weight: bold;
    margin: 2px 0 4px;
}

.footer-section p {
    margin: 2px 0;
    font-size: 0.85rem;
}

.footer-section ul {
    list-style-type: none;
    padding: 0;
}

.footer-section ul li {
    margin-bottom: 4px;
}

.footer-section ul li a {
    text-decoration: none;
    color: var(--link-color);
    font-size: 0.85rem;
}

.footer-section ul li a:hover {
    text-decoration: underline;
    color: var(--link-hover);
}

input:not([type="checkbox"]):not([type="radio"]),
select,
textarea,
.form-control,
.form-select {
    background-color: var(--surface-bg) !important;
    color: var(--text-main) !important;
    border-color: var(--border-color) !important;
    caret-color: var(--text-main);
}

input:not([type="checkbox"]):not([type="radio"]):focus,
select:focus,
textarea:focus,
.form-control:focus,
.form-select:focus {
    background-color: var(--surface-bg) !important;
    color: var(--text-main) !important;
    border-color: var(--link-color) !important;
    box-shadow: 0 0 0 0.2rem color-mix(in srgb, var(--link-color) 25%, transparent) !important;
}

input:not([type="checkbox"]):not([type="radio"]):disabled,
select:disabled,
textarea:disabled,
.form-control:disabled,
.form-select:disabled,
.form-control[readonly] {
    background-color: color-mix(in srgb, var(--surface-muted) 86%, var(--surface-bg) 14%) !important;
    color: color-mix(in srgb, var(--text-main) 78%, var(--text-muted) 22%) !important;
    border-color: var(--border-color) !important;
    opacity: 1;
}

.form-switch .form-check-input {
    width: 2.35rem;
    height: 1.2rem;
    border: 1px solid color-mix(in srgb, var(--border-color) 85%, var(--text-muted) 15%);
    background-color: color-mix(in srgb, var(--surface-muted) 80%, var(--text-muted) 20%);
}

.form-switch .form-check-input:checked {
    background-color: var(--link-color);
    border-color: var(--link-color);
}

.form-switch .form-check-input:focus {
    border-color: var(--link-color);
    box-shadow: 0 0 0 0.2rem color-mix(in srgb, var(--link-color) 28%, transparent);
}

:root {
    --placeholder-color: #a309eb;
}

input::placeholder,
textarea::placeholder,
.form-control::placeholder {
    color: var(--placeholder-color) !important;
    opacity: 1 !important;
}

input::-webkit-input-placeholder,
textarea::-webkit-input-placeholder,
.form-control::-webkit-input-placeholder {
    color: var(--placeholder-color) !important;
    opacity: 1 !important;
}

input::-moz-placeholder,
textarea::-moz-placeholder,
.form-control::-moz-placeholder {
    color: var(--placeholder-color) !important;
    opacity: 1 !important;
}

input:-ms-input-placeholder,
textarea:-ms-input-placeholder,
.form-control:-ms-input-placeholder {
    color: var(--placeholder-color) !important;
    opacity: 1 !important;
}

.modal-content,
.modal-header,
.modal-body,
.modal-footer {
    background: var(--surface-bg);
    color: var(--text-main);
    border-color: var(--border-color);
}

.modal-body canvas {
    width: 100% !important;
    height: 400px !important;
}

.system-card {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    padding: 12px;
    font-size: 0.92rem;
}

.system-card h2 {
    margin: 0 0 8px;
    font-size: 1.08rem;
}

.system-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(180px, 1fr));
    gap: 16px;
}

.metric-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.metric-ring {
    --p: 0;
    --ring-track: color-mix(in srgb, var(--text-muted) 30%, transparent);
    --ring-fill: color-mix(in srgb, var(--link-color) 75%, #25d0a6 25%);
    width: 140px;
    height: 140px;
    border-radius: 50%;
    position: relative;
    background:
        radial-gradient(closest-side, var(--surface-bg) 78%, transparent 79% 100%),
        conic-gradient(var(--ring-fill) calc(var(--p) * 1%), var(--ring-track) 0);
    display: grid;
    place-items: center;
}

.metric-ring::before {
    content: '';
    position: absolute;
    inset: -10px;
    border-radius: 50%;
    border: 1px dashed color-mix(in srgb, var(--text-muted) 35%, transparent);
    opacity: 0.5;
}

.metric-value {
    font-size: 1.65rem;
    font-weight: 700;
    color: var(--text-main);
    z-index: 1;
}

.metric-label {
    margin-top: 10px;
    text-transform: uppercase;
    font-size: 0.72rem;
    letter-spacing: 0.04em;
    font-weight: 700;
    color: var(--text-muted);
}

.system-uptime {
    margin: 10px 0 0;
    font-size: 0.86rem;
    color: var(--text-main);
}

.system-chart-grid {
    width: 100%;
    margin-left: auto;
    margin-right: auto;
    display: grid;
    grid-template-columns: repeat(5, minmax(150px, 1fr));
    gap: 10px;
}

.metric-graph-card {
    padding: 8px;
}

.metric-graph-card h3 {
    margin: 0 0 6px;
    font-size: 0.78rem;
    font-weight: 700;
}

.metric-graph-card canvas {
    width: 100%;
    height: 80px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: color-mix(in srgb, var(--surface-muted) 65%, transparent);
}

.graph-value {
    margin: 5px 0 0;
    font-size: 0.7rem;
    color: var(--text-muted);
}

.graph-legend {
    margin-top: 6px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 0.68rem;
    color: var(--text-muted);
}

.legend-item {
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.legend-color {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    background: var(--legend-color, #0b5ed7);
    border: 1px solid color-mix(in srgb, var(--legend-color, #0b5ed7) 80%, #ffffff 20%);
}

.mini-graph-card {
    cursor: pointer;
}

.mini-graph-card:hover {
    transform: translateY(-3px);
}

#systemGraphModal .modal-content {
    border-radius: 0;
    border: none;
    background: color-mix(in srgb, var(--surface-bg) 86%, #000 14%);
    color: var(--text-main);
}

#systemGraphModal .modal-header {
    border-bottom: 1px solid color-mix(in srgb, var(--border-color) 65%, transparent);
    padding: 18px 26px 14px;
}

#systemGraphModal .modal-title {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 0.01em;
    color: var(--text-main);
}

#systemGraphModal .modal-body {
    padding: 14px 26px 22px;
}

#systemGraphModal .btn-close {
    filter: none;
    opacity: 0.95;
    border: 1px solid color-mix(in srgb, var(--border-color) 80%, #fff 20%);
    border-radius: 10px;
    padding: 12px;
    box-shadow: 0 0 0 1px color-mix(in srgb, var(--border-color) 65%, transparent) inset;
}

:root[data-theme="dark"] #systemGraphModal .btn-close {
    filter: invert(1) grayscale(100%);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) #systemGraphModal .btn-close {
        filter: invert(1) grayscale(100%);
    }
}

#systemGraphModal .btn-close:hover {
    opacity: 1;
    border-color: color-mix(in srgb, var(--link-color) 70%, #fff 30%);
}

#systemGraphModal .modal-body canvas {
    width: 100% !important;
    height: calc(100vh - 165px) !important;
    max-height: calc(100vh - 165px);
    border: 1px solid color-mix(in srgb, var(--border-color) 70%, transparent);
    border-radius: 12px;
    background: color-mix(in srgb, var(--surface-muted) 70%, #000 30%);
}

#systemGraphModalCanvas {
    width: 100% !important;
    height: calc(100vh - 120px) !important;
    max-height: calc(100vh - 120px);
}

body.system-graph-open .modal-backdrop.show {
    opacity: 0.78;
    background: color-mix(in srgb, var(--page-bg) 25%, #000 75%);
}

.graph-legend-modal {
    margin-top: 12px;
    font-size: 0.9rem;
    color: var(--text-main);
}

.graph-value-modal {
    margin-top: 8px;
    font-size: 0.92rem;
    color: var(--text-main);
    font-weight: 600;
}


@media (max-width: 768px) {
    .sidebar {
        margin-left: calc(-1 * var(--sidebar-width));
    }

    .main {
        width: 100%;
        max-width: 100vw;
        margin-left: 0;
    }

    .sidebar.active {
        margin-left: 0;
    }

    .footer-content {
        flex-direction: column;
        align-items: center;
        gap: 6px;
    }

    .footer-section {
        min-width: auto;
        text-align: center;
        margin-bottom: 4px;
    }

    .main-footer {
        margin-left: 0;
        width: 100%;
        max-width: 100vw;
    }

    .system-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .system-card,
    .system-chart-grid {
        width: 100%;
    }

    .system-chart-grid {
        grid-template-columns: repeat(2, minmax(140px, 1fr));
    }

    .metric-ring {
        width: 160px;
        height: 160px;
    }

    .metric-value {
        font-size: 1.7rem;
    }

}

@media (max-width: 991.98px) {
    .main {
        padding: 12px;
    }

    .topbar,
    .navbar.topbar {
        margin-bottom: 0.75rem !important;
        padding: 0.45rem 0.65rem;
    }

    .container-fluid {
        padding-left: 0.35rem;
        padding-right: 0.35rem;
    }

    .card:hover {
        transform: none;
    }

    .table-responsive {
        border-radius: 0.5rem;
        -webkit-overflow-scrolling: touch;
    }

    .table-responsive .table {
        min-width: 720px;
    }

    .table > :not(caption) > * > *,
    table.dataTable > :not(caption) > * > * {
        padding: 0.48rem 0.56rem;
        font-size: 0.86rem;
        white-space: nowrap;
    }

    .dataTables_wrapper .dataTables_filter,
    .dataTables_wrapper .dataTables_length,
    .dataTables_wrapper .dataTables_info,
    .dataTables_wrapper .dataTables_paginate {
        float: none !important;
        text-align: left !important;
        width: 100%;
        margin-top: 0.35rem;
    }

    .dataTables_wrapper .row > [class*="col-"] {
        margin-bottom: 0.35rem;
    }

    .btn,
    .form-control,
    .form-select,
    input:not([type="checkbox"]):not([type="radio"]),
    select,
    textarea {
        min-height: 42px;
    }

    .modal-dialog {
        margin: 0.5rem;
    }
}

@media (max-width: 575.98px) {
    .main {
        padding: 10px;
    }

    .topbar .navbar-nav {
        gap: 0.25rem;
    }

    .topbar .js-theme-logo {
        max-height: 24px !important;
    }

    .dropdown-menu {
        width: calc(100vw - 12px);
        max-width: calc(100vw - 12px);
    }

    .system-chart-grid {
        grid-template-columns: 1fr;
    }

    .metric-ring {
        width: 142px;
        height: 142px;
    }

    .metric-value {
        font-size: 1.45rem;
    }
}

/**
 * Action Icons & Buttons
 * Consistent styling for Add/Edit/Delete/View actions
 */

[data-action] {
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

[data-action]:hover {
    opacity: 0.8;
    transform: scale(1.1);
}

[data-action] i.bi {
    font-size: 1rem;
    vertical-align: middle;
}

.action-icon-add {
    color: #28a745 !important;
}

.action-icon-edit {
    color: #007bff !important;
}

.action-icon-delete {
    color: #dc3545 !important;
}

.action-icon-view {
    color: #6c757d !important;
}

.btn[data-action] {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.75rem;
    font-size: 0.875rem;
    border-radius: 0.25rem;
    transition: all 0.2s ease;
}

.btn[data-action]:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.btn[data-action]:active {
    transform: translateY(0);
}

/* Smaller icon buttons without text */
.btn-icon-only[data-action] {
    padding: 0.25rem 0.375rem;
    min-width: auto;
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/**
 * Table Enhancements
 * Search, pagination, and responsive styling
 */

.table {
    background: var(--surface-bg);
    color: var(--text-main);
    margin-bottom: 1rem;
}

.table thead th {
    background: var(--surface-muted);
    color: var(--text-main);
    font-weight: 600;
    border-bottom: 2px solid var(--border-color);
    padding: 0.75rem;
    cursor: pointer;
    user-select: none;
}

.table thead th:hover {
    background: var(--table-header-accent);
    color: var(--text-main);
}

.table tbody td {
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem;
    vertical-align: middle;
}

.table tbody tr:hover {
    background: var(--surface-muted);
}

.table.table-sm {
    font-size: 0.875rem;
}

.table.table-sm thead th,
.table.table-sm tbody td {
    padding: 0.5rem;
}

/* Search widget styling */
.table-search-widget {
    margin-bottom: 1rem;
    padding: 1rem;
    background: var(--surface-muted);
    border: 1px solid var(--border-color);
    border-radius: 0.35rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

.table-search-widget input[type="text"],
.table-search-widget input[type="search"] {
    flex: 1;
    min-width: 200px;
}

.table-search-widget .btn {
    white-space: nowrap;
}

/* DataTables integration */
.dataTables_length,
.dataTables_filter {
    margin-bottom: 1rem;
}

.dataTables_length select {
    padding: 0.375rem 2rem 0.375rem 0.75rem;
    border: 1px solid var(--border-color);
    background: var(--surface-bg) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3E%3C/svg%3E") no-repeat right 0.55rem center / 1.375rem 1.375rem;
}

.dataTables_wrapper .dataTables_paginate .paginate_button {
    padding: 0.5rem 0.75rem;
    margin-left: 0.25rem;
    border: 1px solid var(--border-color);
    background: var(--surface-bg);
    color: var(--text-main);
    border-radius: 0.25rem;
}

.dataTables_wrapper .dataTables_paginate .paginate_button:hover {
    background: var(--link-color);
    color: white;
    border-color: var(--link-color);
}

.dataTables_wrapper .dataTables_paginate .paginate_button.active {
    background: var(--link-color);
    color: white;
    border-color: var(--link-color);
}

.dataTables_wrapper .dataTables_paginate .paginate_button.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Pagination styling */
.pagination {
    margin-top: 1rem;
    margin-bottom: 1rem;
}

.page-item .page-link {
    background: var(--surface-bg);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.page-item .page-link:hover {
    background: var(--link-color);
    color: white;
    border-color: var(--link-color);
}

.page-item.active .page-link {
    background: var(--link-color);
    border-color: var(--link-color);
    color: white;
}

.page-item.disabled .page-link {
    background: var(--surface-muted);
    color: var(--text-muted);
    cursor: not-allowed;
    opacity: 0.5;
}

/**
 * Responsive Tables on Mobile
 */

@media (max-width: 768px) {
    .table {
        font-size: 0.875rem;
    }

    .table thead th,
    .table tbody td {
        padding: 0.5rem;
    }

    .table-search-widget {
        flex-direction: column;
        padding: 0.75rem;
    }

    .table-search-widget input[type="text"],
    .table-search-widget input[type="search"] {
        width: 100%;
        min-width: auto;
    }

    .dataTables_wrapper .dataTables_info,
    .dataTables_wrapper .dataTables_length,
    .dataTables_wrapper .dataTables_filter {
        text-align: left;
        margin-bottom: 0.5rem;
    }

    .action-button-group {
        display: flex;
        gap: 0.25rem;
    }

    .action-button-group .btn-sm {
        padding: 0.25rem 0.5rem;
        font-size: 0.75rem;
    }
}