/**
    * Design System & Systematic Tokens
    * Theme: Clean Light Dashboard (with Dark Navbar)
    * Compliance: WCAG 2.2 AA
    */

    :root {
        /* --- Base Palette: Slate (Neutrals) --- */
        --slate-50: #f8fafc;
        --slate-100: #f1f5f9;
        --slate-200: #e2e8f0;
        --slate-300: #cbd5e1;
        --slate-400: #94a3b8;
        --slate-500: #64748b;
        --slate-600: #475569;
        --slate-700: #334155;
        --slate-800: #1e293b;
        --slate-900: #0f172a;
        --slate-950: #020617;

        /* --- Cyber Colors (For Navbar) --- */
        --cyber-black: #000000;
        --cyber-dark-900: #0a0e1a;
        --cyber-dark-700: #1e2640;
        --cyber-orange-500: #f97316;
        --cyber-orange-600: #ea580c;
        --cyber-indigo: #6366f1;

        /* --- Semantic Tokens (Clean Light Mode) --- */

        /* Backgrounds */
        --color-bg-app: var(--slate-100);
        /* App canvas background */
        --color-bg-surface: #ffffff;
        /* Card / Surface background */
        --color-bg-surface-hover: var(--slate-50);
        --color-bg-input: #ffffff;

        /* Text */
        --color-text-primary: var(--slate-900);
        /* Dark grey primary text */
        --color-text-secondary: var(--slate-600);
        --color-text-muted: var(--slate-500);
        --color-text-on-brand: #ffffff;

        /* Borders */
        --color-border-subtle: #f1f5f9;
        --color-border-default: var(--slate-200);
        --color-border-focus: var(--cyber-orange-500);

        /* Interactive / Brand */
        --color-primary: var(--cyber-orange-600);
        --color-primary-hover: var(--cyber-orange-500);
        --color-primary-subtle: #ffedd5;

        /* Status */
        --color-success: #10b981;
        --color-success-bg: #d1fae5;
        --color-danger: #ef4444;
        --color-danger-bg: #fee2e2;
        --color-warning: #f59e0b;
        --color-warning-bg: #fef3c7;

        /* Shadows & Glass */
        --shadow-soft: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
        --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.03);

        /* Focus Ring */
        --focus-ring-color: rgba(249, 115, 22, 0.2);
        --focus-ring-width: 3px;

        /* Legacy Mappings */
        --primary-color: var(--color-primary);
        --primary-hover: var(--color-primary-hover);
        --text-main: var(--color-text-primary);
        --text-muted: var(--color-text-muted);
        --card-bg: var(--color-bg-surface);
        --light-bg: var(--color-bg-app);
        --border-color: var(--color-border-default);
    }

    /* Bootstrap 5 theme bridge */
    :root {
        --bs-body-font-family: 'Inter', system-ui, -apple-system, sans-serif;
        --bs-body-bg: var(--color-bg-app);
        --bs-body-color: var(--color-text-primary);
        --bs-border-color: var(--color-border-default);
        --bs-link-color: var(--color-primary);
        --bs-link-hover-color: var(--color-primary-hover);
        --bs-primary: var(--color-primary);
        --bs-secondary: var(--slate-600);
        --bs-success: var(--color-success);
        --bs-danger: var(--color-danger);
        --bs-warning: var(--color-warning);
        --bs-info: var(--cyber-indigo);
        --bs-light: var(--slate-100);
        --bs-dark: var(--slate-900);
        --bs-border-radius: 0.75rem;
    }

    body {
        background-color: var(--color-bg-app);
        color: var(--color-text-primary);
        font-family: var(--bs-body-font-family);
        background-image: none;
        /* Removed dark background grids */
    }

    /* Components */

    /* Cards */
    .card {
        background-color: var(--color-bg-surface);
        border: 1px solid var(--color-border-default);
        color: var(--color-text-primary);
        border-radius: 0.75rem;
        box-shadow: var(--shadow-soft);
        transition: all 0.2s ease;
    }

    .card-header {
        background-color: rgba(0, 0, 0, 0.01);
        border-bottom: 1px solid var(--color-border-default);
        padding: 1.1rem 1.5rem;
    }

    .card-title {
        font-weight: 700;
        color: var(--color-text-primary);
        letter-spacing: -0.01em;
    }

    /* Hover Lift */
    .hover-lift:hover {
        transform: translateY(-3px);
        box-shadow: var(--shadow-md) !important;
    }

    /* Inputs */
    .form-control,
    .form-select {
        background-color: var(--color-bg-input);
        border: 1px solid var(--color-border-default);
        color: var(--color-text-primary);
        border-radius: 0.5rem;
        padding: 0.55rem 0.85rem;
        transition: all 0.2s ease;
    }

    .form-control:focus,
    .form-select:focus {
        border-color: var(--color-border-focus);
        box-shadow: 0 0 0 var(--focus-ring-width) var(--focus-ring-color);
        background-color: var(--color-bg-input);
        color: var(--color-text-primary);
    }

    .form-control::placeholder {
        color: var(--color-text-muted);
    }

    label {
        color: var(--color-text-secondary);
        font-weight: 600;
        margin-bottom: 0.35rem;
    }

    /* Buttons */
    .btn {
        border-radius: 0.5rem;
        font-weight: 600;
        padding: 0.55rem 1.15rem;
        transition: all 0.2s ease;
    }

    .btn-primary {
        background-color: var(--color-primary);
        border-color: var(--color-primary);
        color: var(--color-text-on-brand);
    }

    .btn-primary:hover,
    .btn-primary:focus,
    .btn-primary:active {
        background-color: var(--color-primary-hover);
        border-color: var(--color-primary-hover);
        color: var(--color-text-on-brand);
    }

    .btn-outline-primary {
        color: var(--color-primary);
        border: 1px solid var(--color-primary);
        background: transparent;
    }

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

    .btn-secondary {
        background-color: var(--slate-200);
        border-color: var(--slate-200);
        color: var(--slate-800);
    }

    .btn-secondary:hover {
        background-color: var(--slate-300);
        border-color: var(--slate-300);
    }

    .btn-light {
        background-color: var(--slate-50);
        border: 1px solid var(--slate-200);
        color: var(--slate-700);
    }

    .btn-light:hover {
        background-color: var(--slate-100);
        color: var(--slate-800);
    }

    /* Bootstrap utilities overrides */
    .text-primary {
        color: var(--color-primary) !important;
    }

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

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

    .badge-primary {
        background-color: var(--color-primary) !important;
        border-color: var(--color-primary) !important;
        color: var(--color-text-on-brand) !important;
    }

    /* Tables */
    .table {
        color: var(--color-text-primary) !important;
        background-color: var(--color-bg-surface);
    }

    .table thead th {
        background-color: var(--slate-50) !important;
        color: var(--color-text-secondary) !important;
        border-bottom: 2px solid var(--color-border-default) !important;
        font-weight: 700;
        text-transform: uppercase;
        font-size: 0.75rem;
        letter-spacing: 0.05em;
        padding: 0.9rem 1rem;
    }

    .table td,
    .table th {
        border-top: 1px solid var(--color-border-default) !important;
        color: var(--color-text-primary) !important;
        padding: 0.9rem 1rem;
        vertical-align: middle;
    }

    .table-hover tbody tr:hover {
        background-color: var(--slate-50) !important;
    }

    .table-hover tbody tr:hover td {
        color: var(--slate-900) !important;
    }

    .table a:not(.btn):not(.badge) {
        color: var(--color-primary) !important;
        text-decoration: underline !important;
    }

    .table a:not(.btn):not(.badge):hover {
        color: var(--cyber-orange-500) !important;
    }

    /* Custom Table Style specifically */
    .custom-table {
        border: 1px solid var(--color-border-default);
    }

    /* Navbar (Dark Theme Navbar in Light Mode App) */
    .navbar {
        background-color: var(--cyber-black) !important;
    }

    .navbar-brand,
    .nav-link {
        color: var(--slate-400) !important;
    }

    .nav-link:hover,
    .nav-link.active {
        color: #ffffff !important;
        background: rgba(255, 255, 255, 0.08) !important;
    }

    .dropdown-menu {
        background-color: #ffffff;
        border: 1px solid var(--slate-200);
        box-shadow: var(--shadow-md);
        border-radius: 0.5rem;
        padding: 0.35rem;
    }

    .dropdown-item {
        color: var(--slate-700);
        border-radius: 0.35rem;
        padding: 0.5rem 0.85rem;
        font-weight: 600;
    }

    .dropdown-item:hover,
    .dropdown-item:focus {
        background-color: var(--slate-100);
        color: var(--color-primary) !important;
    }

    /* Badges / Status */
    .badge {
        border-radius: 4px;
        padding: 0.35em 0.65em;
        font-weight: 700;
        font-size: 0.72rem;
        display: inline-block;
    }

    .badge-success,
    .badge-soft-success {
        background-color: var(--color-success-bg) !important;
        color: var(--color-success) !important;
        border: 1px solid rgba(16, 185, 129, 0.3) !important;
    }

    .badge-danger,
    .badge-soft-danger {
        background-color: var(--color-danger-bg) !important;
        color: var(--color-danger) !important;
        border: 1px solid rgba(239, 68, 68, 0.3) !important;
    }

    .badge-warning,
    .badge-soft-warning {
        background-color: var(--color-warning-bg) !important;
        color: var(--color-warning) !important;
        border: 1px solid rgba(245, 158, 11, 0.3) !important;
    }

    .badge-info,
    .badge-soft-info {
        background-color: #dbeafe !important;
        color: #1e40af !important;
        border: 1px solid rgba(59, 130, 246, 0.3) !important;
    }

    .badge-secondary,
    .badge-soft-secondary {
        background-color: var(--slate-100) !important;
        color: var(--slate-600) !important;
        border: 1px solid var(--slate-200) !important;
    }

    .badge-light {
        background-color: var(--slate-50) !important;
        color: var(--slate-700) !important;
        border: 1px solid var(--slate-200) !important;
    }

    /* Button Status Overrides */
    .btn-success {
        background-color: var(--color-success);
        border-color: var(--color-success);
        color: #ffffff;
    }

    .btn-success:hover,
    .btn-success:focus {
        background-color: #059669;
        border-color: #059669;
    }

    .btn-danger {
        background-color: var(--color-danger);
        border-color: var(--color-danger);
        color: #ffffff;
    }

    .btn-danger:hover,
    .btn-danger:focus {
        background-color: #dc2626;
        border-color: #dc2626;
    }

    .btn-warning {
        background-color: var(--color-warning);
        border-color: var(--color-warning);
        color: #ffffff;
    }

    .btn-warning:hover,
    .btn-warning:focus {
        background-color: #d97706;
        border-color: #d97706;
    }

    /* Utilities & Scroll */
    .text-muted {
        color: var(--color-text-muted) !important;
    }

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

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

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

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

    .bg-light {
        background-color: var(--slate-50) !important;
    }

    .bg-white {
        background-color: #ffffff !important;
    }

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

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

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

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

    .bg-info {
        background-color: var(--cyber-indigo) !important;
    }

    .device-tracking-scroll {
        max-height: 420px;
        overflow-y: auto;
    }

    .device-tracking-scroll thead th {
        position: sticky;
        top: 0;
        z-index: 2;
    }

    .report-section-scroll {
        max-height: 420px;
        overflow: auto;
    }

    .report-section-scroll-lg {
        max-height: 520px;
        overflow: auto;
    }

    .report-section-scroll thead th,
    .report-section-scroll-lg thead th {
        position: sticky;
        top: 0;
        z-index: 2;
        background-color: var(--slate-50);
    }

    /* Scrollbar */
    ::-webkit-scrollbar {
        width: 8px;
        height: 8px;
    }

    ::-webkit-scrollbar-track {
        background: var(--slate-50);
    }

    ::-webkit-scrollbar-thumb {
        background: var(--slate-300);
        border-radius: 4px;
    }

    ::-webkit-scrollbar-thumb:hover {
        background: var(--slate-400);
    }

    /* ApexCharts Styling Customizations */
    .apexcharts-canvas {
        background: transparent !important;
    }

    @media (max-width: 991.98px) {
        .navbar .container-fluid {
            padding-left: 0.75rem;
            padding-right: 0.75rem;
        }

        .navbar-nav .nav-link {
            padding: 0.5rem 0.75rem !important;
        }

        .dropdown-menu {
            width: 100%;
        }
    }

    @media (max-width: 767.98px) {
        .main-container {
            padding: 1rem !important;
        }

        .content-wrapper {
            padding: 1rem !important;
        }

        .content-wrapper.p-4,
        .content-wrapper.px-4,
        .content-wrapper.py-4 {
            padding: 1rem !important;
        }

        .page-header {
            flex-direction: column;
            align-items: flex-start;
            gap: 0.5rem;
        }

        .page-title {
            font-size: 1.25rem;
        }

        .card-header {
            padding: 1rem !important;
        }

        .card-body {
            padding: 1rem !important;
        }

        .card-body.p-5 {
            padding: 1.25rem !important;
        }

        .table-responsive {
            -webkit-overflow-scrolling: touch;
        }

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

        .device-tracking-scroll {
            max-height: 320px;
        }

        .report-section-scroll {
            max-height: 320px;
        }

        .report-section-scroll-lg {
            max-height: 380px;
        }

        input,
        select,
        textarea,
        button {
            font-size: 16px;
        }
    }

    @media (max-width: 575.98px) {
        .navbar-brand.main-logo span {
            font-size: 0.95rem;
        }

        .btn {
            padding: 0.5rem 0.9rem;
        }
    }

    /* Defensive Light Card Contrast Fallbacks */
    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) {
        background-color: #ffffff !important;
        color: var(--slate-900) !important;
    }

    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) h1,
    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) h2,
    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) h3,
    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) h4,
    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) h5,
    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) h6,
    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) p,
    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) span,
    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) div,
    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) label {
        color: var(--slate-900) !important;
    }

    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) .text-white,
    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) .text-light,
    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) [class*="text-white"],
    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) [class*="text-light"] {
        color: var(--slate-900) !important;
    }

    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) .text-muted,
    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) .text-secondary,
    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) .text-white-50 {
        color: var(--slate-500) !important;
    }

    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) .btn:not(.btn-primary) {
        color: var(--slate-700) !important;
        border: 1px solid var(--slate-200) !important;
        background-color: var(--slate-50) !important;
    }

    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) .btn:not(.btn-primary):hover {
        color: var(--slate-900) !important;
        background-color: var(--slate-100) !important;
        border-color: var(--slate-300) !important;
    }

    .card:not(.bg-dark):not(.bg-secondary):not(.bg-primary):not(.stat-card) .btn:not(.btn-primary) * {
        color: inherit !important;
    }