:root {
    --admin-bg: #f6f7fb;
    --admin-surface: #ffffff;
    --admin-text: #0f172a;
    --admin-muted: #64748b;
    --admin-border: rgba(15, 23, 42, 0.12);
    --admin-primary: #4f46e5;
    --admin-primary-600: #4338ca;
    --admin-radius: 14px;
    --admin-radius-sm: 10px;
    --admin-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
    --admin-shadow-md: 0 12px 30px rgba(15, 23, 42, 0.10);
    --admin-focus: rgba(79, 70, 229, 0.35);
    --admin-sidebar-bg: #0b1220;
    --admin-sidebar-border: rgba(148, 163, 184, 0.16);
}

.admin-body {
    background: var(--admin-bg);
    color: var(--admin-text);
    min-height: 100vh;
}

.admin-body a {
    text-decoration: none;
}

.admin-sidebar-inner {
    width: 280px;
    height: 100vh;
}

#sidebar {
    background: var(--admin-sidebar-bg) !important;
    border-right: 1px solid var(--admin-sidebar-border);
    position: sticky;
    top: 0;
    height: 100vh;
    transition: width 180ms ease, transform 180ms ease;
}

#sidebar .nav-pills .nav-link {
    border-radius: 12px;
    padding: 0.75rem 0.9rem;
    color: rgba(226, 232, 240, 0.92);
}

#sidebar .nav-pills .nav-link:hover {
    background-color: rgba(148, 163, 184, 0.12);
    color: #ffffff;
}

#sidebar .nav-pills .nav-link.active {
    background: rgba(79, 70, 229, 0.18);
    color: #ffffff;
}

#sidebar.collapsed {
    transform: translateX(-100%);
}

.admin-body.sidebar-collapsed #sidebar.collapsed + .flex-grow-1 {
    width: 100%;
}

.admin-body .navbar {
    backdrop-filter: blur(10px);
}

.admin-body .navbar.navbar-light {
    background: rgba(255, 255, 255, 0.85) !important;
}

.admin-body .content {
    background: transparent;
}

.admin-body .content > .container,
.admin-body .content > .container-fluid {
    padding-left: 0;
    padding-right: 0;
}

.admin-body .card {
    border: 1px solid var(--admin-border);
    border-radius: var(--admin-radius);
    box-shadow: var(--admin-shadow-sm);
}

.admin-body .card.shadow {
    box-shadow: var(--admin-shadow-md);
}

.admin-body .btn {
    border-radius: 12px;
    font-weight: 600;
    letter-spacing: 0.1px;
    transition: background 160ms ease, border-color 160ms ease, color 160ms ease, box-shadow 160ms ease;
}

.admin-body .btn-primary {
    background: var(--admin-primary);
    border-color: var(--admin-primary);
}

.admin-body .btn-primary:hover {
    background: var(--admin-primary-600);
    border-color: var(--admin-primary-600);
}

.admin-body .btn-outline-primary {
    border-color: rgba(79, 70, 229, 0.35);
    color: var(--admin-primary);
}

.admin-body .btn-outline-primary:hover {
    background: var(--admin-primary);
    border-color: var(--admin-primary);
    color: #ffffff;
}

.admin-body .btn-outline-secondary {
    border-color: rgba(15, 23, 42, 0.22);
    color: rgba(15, 23, 42, 0.82);
}

.admin-body .btn-outline-secondary:hover {
    background: rgba(15, 23, 42, 0.06);
    border-color: rgba(15, 23, 42, 0.28);
    color: rgba(15, 23, 42, 0.92);
}

.admin-body .btn:focus,
.admin-body .btn:focus-visible,
.admin-body .form-control:focus,
.admin-body .form-select:focus {
    box-shadow: 0 0 0 0.25rem var(--admin-focus);
}

.admin-body .form-control,
.admin-body .form-select {
    border-radius: 12px;
    border-color: rgba(15, 23, 42, 0.14);
}

.admin-body .form-control::placeholder {
    color: rgba(100, 116, 139, 0.9);
}

.message {
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: var(--admin-radius-sm);
    border: 1px solid transparent;
    box-shadow: var(--admin-shadow-sm);
    background: var(--admin-surface);
}

.message.success {
    background-color: #eaf7ee;
    border-color: rgba(34, 197, 94, 0.25);
    color: #166534;
}

.message.error {
    background-color: #fff1f2;
    border-color: rgba(244, 63, 94, 0.25);
    color: #9f1239;
}

.admin-body .table {
    background-color: var(--admin-surface);
    box-shadow: var(--admin-shadow-sm);
    border-radius: var(--admin-radius);
    overflow: hidden;
}

.admin-body .table thead th {
    border-top: none;
    background-color: rgba(148, 163, 184, 0.12);
    color: var(--admin-muted);
    font-weight: 600;
}

.admin-body .table th,
.admin-body .table td {
    padding: 0.75rem 1rem;
}

.admin-body .table tbody td {
    vertical-align: middle;
}

.admin-body .table-hover tbody tr:hover {
    background-color: rgba(79, 70, 229, 0.06);
}

.admin-body .pagination {
    gap: 6px;
}

.admin-body .pagination .page-link {
    border-radius: 12px;
    border: 1px solid var(--admin-border);
    color: rgba(15, 23, 42, 0.85);
}

.admin-body .pagination .page-item.active .page-link {
    background: rgba(79, 70, 229, 0.14);
    border-color: rgba(79, 70, 229, 0.35);
    color: rgba(15, 23, 42, 0.92);
}

@media (max-width: 992px) {
    #sidebar {
        position: fixed;
        z-index: 1030;
        left: 0;
        top: 0;
    }
}