:root {
    /* Background colors */
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d27;
    --bg-card: #1e2130;
    --bg-input: #252838;
    --bg-hover: #2a2d3e;

    /* Text colors */
    --text-primary: #e4e6f0;
    --text-secondary: #8b8fa3;
    --text-muted: #5c6078;

    /* Accent colors */
    --accent-primary: #6366f1;
    --accent-primary-hover: #818cf8;
    --accent-success: #22c55e;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    --accent-info: #3b82f6;

    /* Border */
    --border-color: #2a2d3e;
    --border-radius: 8px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
}

/* Base */
html, body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    margin: 0;
    min-height: 100vh;
}

/* Page layout */
.page {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    overflow-y: auto;
    z-index: 100;
}

main {
    flex: 1;
    margin-left: 260px;
    min-height: 100vh;
}

.content {
    padding: 2rem;
}

/* Cards */
.card, .bg-dark-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.card-header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

/* Forms */
.form-control, .form-select {
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
}

.form-control:focus, .form-select:focus {
    background-color: var(--bg-input);
    border-color: var(--accent-primary);
    color: var(--text-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
}

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

.form-label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
    margin-bottom: 0.35rem;
}

.form-check-input {
    background-color: var(--bg-input);
    border-color: var(--border-color);
}

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

.form-control:disabled,
.form-control[readonly],
.form-select:disabled {
    background-color: var(--bg-primary) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
    border-style: dashed !important;
    opacity: 0.75;
    cursor: not-allowed;
}

.form-check-label {
    color: var(--text-primary);
}

.form-check-inline .form-check-label {
    color: var(--text-primary);
}

/* Buttons */
.btn-primary {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
    font-weight: 500;
    border-radius: 6px;
    padding: 0.5rem 1.25rem;
    transition: all 0.2s;
}

.btn-primary:hover {
    background-color: var(--accent-primary-hover);
    border-color: var(--accent-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-danger {
    background-color: var(--accent-danger);
    border-color: var(--accent-danger);
    color: white;
}

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

.btn-warning {
    background-color: var(--accent-warning);
    border-color: var(--accent-warning);
    color: #1a1d27;
}

.btn-success {
    background-color: var(--accent-success);
    border-color: var(--accent-success);
    color: white;
}

.btn-outline-secondary {
    border-color: var(--border-color);
    color: var(--text-secondary);
}

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

.btn-sm {
    padding: 0.25rem 0.75rem;
    font-size: 0.8125rem;
}

/* Tables */
.table {
    color: var(--text-primary);
    --bs-table-bg: transparent;
    --bs-table-color: var(--text-primary);
    --bs-table-striped-bg: rgba(255, 255, 255, 0.03);
    --bs-table-striped-color: var(--text-primary);
    --bs-table-hover-bg: rgba(255, 255, 255, 0.05);
    --bs-table-hover-color: var(--text-primary);
}

.table thead th {
    background-color: var(--bg-secondary);
    border-bottom: 2px solid var(--border-color);
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.75rem;
}

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

.table tbody tr {
    color: var(--text-primary);
}

.table-striped > tbody > tr:nth-of-type(odd) > * {
    background-color: var(--bs-table-striped-bg);
    color: var(--text-primary);
}

.table-striped > tbody > tr:nth-of-type(even) > * {
    color: var(--text-primary);
}

/* Alerts */
.alert-danger {
    background-color: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

.alert-success {
    background-color: rgba(34, 197, 94, 0.15);
    border-color: rgba(34, 197, 94, 0.3);
    color: #86efac;
}

.alert-warning {
    background-color: rgba(245, 158, 11, 0.15);
    border-color: rgba(245, 158, 11, 0.3);
    color: #fcd34d;
}

.alert-info {
    background-color: rgba(59, 130, 246, 0.15);
    border-color: rgba(59, 130, 246, 0.3);
    color: #93c5fd;
}

/* NavMenu */
.navbar-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-primary) !important;
    padding: 1.25rem 1rem;
}

.nav-section-title {
    color: var(--text-muted);
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: 1rem 1rem 0.35rem;
    margin-top: 0.5rem;
}

.nav-link {
    color: var(--text-secondary) !important;
    padding: 0.5rem 1rem !important;
    border-radius: 6px;
    margin: 1px 0.5rem;
    font-size: 0.875rem;
    transition: all 0.15s;
}

.nav-link:hover {
    color: var(--text-primary) !important;
    background-color: var(--bg-hover);
}

.nav-link.active {
    color: white !important;
    background-color: var(--accent-primary) !important;
}

/* Login page */
.login-page {
    background-color: var(--bg-primary);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    width: 100%;
}

.login-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2.5rem;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    color: var(--accent-primary);
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
}

.login-header p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Top row */
.top-row {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    height: 50px;
    padding: 0 1.5rem;
}

.top-row a, .top-row .btn-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
}

.top-row a:hover, .top-row .btn-link:hover {
    color: var(--text-primary);
}

/* Badges */
.badge {
    font-weight: 500;
    font-size: 0.75rem;
    padding: 0.25em 0.65em;
    border-radius: 4px;
}

.badge.bg-primary { background-color: var(--accent-primary) !important; }
.badge.bg-success { background-color: var(--accent-success) !important; }
.badge.bg-danger { background-color: var(--accent-danger) !important; }
.badge.bg-warning { background-color: var(--accent-warning) !important; color: #1a1d27 !important; }

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-muted);
}

/* Modal */
.modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
}

.modal-footer {
    border-top: 1px solid var(--border-color);
}

.btn-close {
    filter: invert(1);
}

/* Dropdown */
.dropdown-menu {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
}

.dropdown-item {
    color: var(--text-primary);
}

.dropdown-item:hover {
    background-color: var(--bg-hover);
    color: var(--text-primary);
}

/* Selection */
::selection {
    background-color: rgba(99, 102, 241, 0.4);
}

/* Spinner */
.spinner-border {
    color: var(--accent-primary);
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-primary);
    font-weight: 600;
}

/* Horizontal rule */
hr {
    border-color: var(--border-color);
    opacity: 1;
}

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

/* Blazor error UI */
#blazor-error-ui {
    background: var(--accent-danger);
    color: white;
    bottom: 0;
    box-shadow: var(--shadow-lg);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        position: relative;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    main {
        margin-left: 0;
    }

    .page {
        flex-direction: column;
    }
}