:root {
    /* Paleta de Cores (Slate/Blue-gray) */
    --dark-bg: #0f172a;
    --dark-surface: #1e293b;
    --dark-surface-hover: #334155;

    /* Tipografia */
    --dark-text: #f8fafc;
    --dark-text-muted: #94a3b8;

    /* Bordas e UI */
    --dark-border: #334155;
    --dark-primary: #818cf8;
    --dark-primary-hover: #6366f1;
    --dark-focus-ring: rgba(129, 140, 248, 0.25);

    /* Variáveis de UX */
    --border-radius-sm: 6px;
    --border-radius-md: 10px;
    --border-radius-lg: 14px;
    --transition-base: all 0.25s ease;
}

html.dark-mode body {
    background: var(--dark-bg);
    color: var(--dark-text);
    transition: background-color 0.3s ease, color 0.3s ease;
}

html.dark-mode h1,
html.dark-mode h2,
html.dark-mode h3,
html.dark-mode h4,
html.dark-mode h5,
html.dark-mode h6 {
    color: var(--dark-text);
    letter-spacing: -0.025em;
}

html.dark-mode .text-muted {
    color: var(--dark-text-muted) !important;
}

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

html.dark-mode .text-body {
    color: var(--dark-text) !important;
}

html.dark-mode .card {
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    transition: var(--transition-base);
}

html.dark-mode .card-body {
    background: transparent;
}

html.dark-mode .card-header {
    background: rgba(15, 23, 42, 0.4);
    border-bottom: 1px solid var(--dark-border);
    color: var(--dark-text);
}

html.dark-mode .card-footer {
    background: rgba(15, 23, 42, 0.4);
    border-top: 1px solid var(--dark-border);
    color: var(--dark-text-muted);
}

html.dark-mode .jumbotron {
    background: linear-gradient(135deg, var(--dark-surface), var(--dark-bg));
    color: var(--dark-text);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

html.dark-mode .form-control,
html.dark-mode .custom-select {
    background: var(--dark-bg);
    color: var(--dark-text);
    border: 1px solid var(--dark-border);
    border-radius: var(--border-radius-sm);
    transition: var(--transition-base);
}

html.dark-mode .form-control:focus,
html.dark-mode .custom-select:focus {
    background: var(--dark-surface);
    color: var(--dark-text);
    border-color: var(--dark-primary);
    box-shadow: 0 0 0 3px var(--dark-focus-ring);
}

html.dark-mode .form-control::placeholder {
    color: #64748b;
}

html.dark-mode .form-check-label,
html.dark-mode .form-group label,
html.dark-mode .col-form-label {
    color: var(--dark-text);
    font-weight: 500;
}

html.dark-mode .form-control:disabled,
html.dark-mode .form-control[readonly] {
    background-color: var(--dark-surface-hover);
    color: var(--dark-text-muted);
    border-color: var(--dark-border);
}

/* Input Groups (Prepend/Append) */
html.dark-mode .input-group-text {
    background: var(--dark-surface-hover);
    border-color: var(--dark-border);
    color: var(--dark-text-muted);
}

/* Custom Controls (Checkboxes, Radios, Switches, File, Range) */
html.dark-mode .custom-control-label::before {
    background-color: var(--dark-bg);
    border-color: var(--dark-border);
}

html.dark-mode .custom-file-label {
    background: var(--dark-bg);
    border-color: var(--dark-border);
    color: var(--dark-text);
}

html.dark-mode .custom-file-label::after {
    background: var(--dark-surface-hover);
    color: var(--dark-text);
}

html.dark-mode .custom-range::-webkit-slider-runnable-track {
    background-color: var(--dark-surface-hover);
}

html.dark-mode .table {
    color: var(--dark-text);
    background: transparent;
}

html.dark-mode .table th,
html.dark-mode .table td {
    border-color: var(--dark-border);
}

html.dark-mode .table thead th {
    border-bottom: 2px solid var(--dark-border);
    color: var(--dark-text-muted);
    background-color: rgba(15, 23, 42, 0.4);
}

html.dark-mode .table-hover tbody tr {
    transition: var(--transition-base);
}

html.dark-mode .table-hover tbody tr:hover {
    background: var(--dark-surface-hover);
    color: var(--dark-text);
}

html.dark-mode .table-striped tbody tr:nth-of-type(odd) {
    background: rgba(255, 255, 255, 0.02);
}

html.dark-mode .table-bordered {
    border: 1px solid var(--dark-border);
}

html.dark-mode .table-bordered th,
html.dark-mode .table-bordered td {
    border: 1px solid var(--dark-border);
}

/* Tabelas responsivas (Borda e Scroll) */
html.dark-mode .table-responsive {
    background: var(--dark-surface);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
    scrollbar-color: var(--dark-border) transparent;
}

html.dark-mode .table-responsive::-webkit-scrollbar-thumb {
    background-color: var(--dark-border);
}

html.dark-mode .modal-content {
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}

html.dark-mode .modal-header,
html.dark-mode .modal-footer {
    background: var(--dark-surface);
    border-color: var(--dark-border);
}

html.dark-mode .close {
    color: var(--dark-text-muted);
    text-shadow: none;
}

html.dark-mode .close:hover {
    color: #fff;
}

/* Popovers */
html.dark-mode .popover {
    background: var(--dark-surface);
    border-color: var(--dark-border);
}

html.dark-mode .popover-header {
    background: var(--dark-surface-hover);
    border-bottom-color: var(--dark-border);
    color: var(--dark-text);
}

html.dark-mode .popover-body {
    color: var(--dark-text-muted);
}

/* Toasts */
html.dark-mode .toast {
    background: var(--dark-surface);
    border-color: var(--dark-border);
    box-shadow: 0 0.25rem 0.75rem rgba(0, 0, 0, 0.3);
}

html.dark-mode .toast-header {
    background: var(--dark-surface-hover);
    border-bottom-color: var(--dark-border);
    color: var(--dark-text);
}

html.dark-mode .toast-body {
    color: var(--dark-text-muted);
}

html.dark-mode .navbar-light,
html.dark-mode .navbar-dark.bg-primary {
    background: rgba(30, 41, 59, 0.9) !important;
    border-bottom: 1px solid var(--dark-border);
}

html.dark-mode .navbar-brand,
html.dark-mode .navbar-nav .nav-link {
    color: var(--dark-text) !important;
}

html.dark-mode .navbar-nav .nav-link:hover {
    color: var(--dark-primary) !important;
}

/* Abas (Tabs) */
html.dark-mode .nav-tabs {
    border-bottom: 1px solid var(--dark-border);
}

html.dark-mode .nav-tabs .nav-link {
    color: var(--dark-text-muted);
}

html.dark-mode .nav-tabs .nav-link:hover {
    color: var(--dark-text);
}

html.dark-mode .nav-tabs .nav-link.active {
    background: var(--dark-bg);
    color: var(--dark-primary);
    border-color: var(--dark-border) var(--dark-border) var(--dark-bg);
}

/* Paginação */
html.dark-mode .pagination .page-link {
    background: var(--dark-surface);
    border-color: var(--dark-border);
    color: var(--dark-text);
}

html.dark-mode .pagination .page-link:hover {
    background: var(--dark-surface-hover);
    color: var(--dark-primary);
}

html.dark-mode .pagination .page-item.active .page-link {
    background: var(--dark-primary);
    border-color: var(--dark-primary);
    color: #fff;
}

html.dark-mode .pagination .page-item.disabled .page-link {
    background: var(--dark-bg);
    border-color: var(--dark-border);
    color: var(--dark-text-muted);
}

/* Breadcrumb */
html.dark-mode .breadcrumb {
    background: var(--dark-surface);
}

html.dark-mode .breadcrumb-item.active {
    color: var(--dark-text-muted);
}

html.dark-mode .breadcrumb-item+.breadcrumb-item::before {
    color: var(--dark-border);
}

html.dark-mode .list-group-item {
    background: var(--dark-surface);
    border-color: var(--dark-border);
    color: var(--dark-text);
}

html.dark-mode .list-group-item-action:hover,
html.dark-mode .list-group-item-action:focus {
    background: var(--dark-surface-hover);
    color: var(--dark-primary);
}

html.dark-mode .list-group-item.active {
    background: var(--dark-primary);
    border-color: var(--dark-primary);
    color: #fff;
}

html.dark-mode .list-group-item.disabled {
    background: var(--dark-bg);
    color: var(--dark-text-muted);
}

html.dark-mode .btn-primary {
    background: var(--dark-primary);
    border-color: var(--dark-primary);
    color: #ffffff;
}

html.dark-mode .btn-primary:hover,
html.dark-mode .btn-primary:focus {
    background: var(--dark-primary-hover);
    border-color: var(--dark-primary-hover);
    box-shadow: 0 0 0 3px var(--dark-focus-ring);
}

html.dark-mode .btn-light {
    background: var(--dark-surface-hover);
    color: var(--dark-text);
    border-color: transparent;
}

html.dark-mode .btn-light:hover {
    background: #475569;
    color: #ffffff;
}

html.dark-mode .btn-outline-secondary {
    color: var(--dark-text-muted);
    border-color: var(--dark-border);
}

html.dark-mode .btn-outline-secondary:hover {
    color: var(--dark-text);
    background: var(--dark-surface-hover);
}

/* Dropdowns */
html.dark-mode .dropdown-menu {
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
}

html.dark-mode .dropdown-item {
    color: var(--dark-text);
}

html.dark-mode .dropdown-item:hover,
html.dark-mode .dropdown-item:focus {
    background: var(--dark-surface-hover);
    color: var(--dark-primary);
}

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

html.dark-mode .alert {
    border: 1px solid transparent;
}

html.dark-mode .alert-info {
    background: rgba(56, 189, 248, 0.15);
    border-color: rgba(56, 189, 248, 0.25);
    color: #38bdf8;
}

html.dark-mode .alert-warning {
    background: rgba(251, 191, 36, 0.15);
    border-color: rgba(251, 191, 36, 0.25);
    color: #fbbf24;
}

html.dark-mode .alert-danger {
    background: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.25);
    color: #f87171;
}

html.dark-mode .alert-success {
    background: rgba(34, 197, 94, 0.15);
    border-color: rgba(34, 197, 94, 0.25);
    color: #4ade80;
}

/* Progress Bar */
html.dark-mode .progress {
    background: var(--dark-surface-hover);
}

/* Utilitários Extras */
html.dark-mode .bg-white,
html.dark-mode .bg-light {
    background: var(--dark-surface) !important;
}

html.dark-mode hr {
    border-top-color: var(--dark-border);
}