:root {
    --cium-primary: #206ea7;
    --cium-primary-dark: #185783;
    --cium-background: #f5f7fb;
    --cium-sidebar-width: 260px;
}

html,
body {
    min-height: 100%;
}

body {
    margin: 0;
    background: var(--cium-background);
    color: #212529;
}

.sidebar {
    width: var(--cium-sidebar-width);
    min-width: var(--cium-sidebar-width);
    min-height: 100vh;
    position: sticky;
    top: 0;
    background: linear-gradient( 180deg, var(--cium-primary), var(--cium-primary-dark) );
}

    .sidebar .nav-link {
        color: rgba(255, 255, 255, 0.86);
        border-radius: 9px;
        margin-bottom: 5px;
        padding: 0.75rem 0.9rem;
        transition: background-color 0.2s ease, color 0.2s ease;
    }

        .sidebar .nav-link:hover {
            background: rgba(255, 255, 255, 0.14);
            color: #fff;
        }

        .sidebar .nav-link.active {
            background: #fff;
            color: var(--cium-primary);
            font-weight: 600;
        }

.brand-title {
    color: #fff;
    font-size: 1.25rem;
    font-weight: 700;
}

.main-area {
    min-width: 0;
    min-height: 100vh;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid #e4e7ec;
    backdrop-filter: blur(8px);
}

.content-wrapper {
    padding: 1.5rem;
}

.card {
    border: 0;
    border-radius: 14px;
}

.card-header {
    border-bottom: 1px solid #edf0f3;
    border-radius: 14px 14px 0 0 !important;
}

.table {
    background: #fff;
    vertical-align: middle;
}

    .table thead th {
        white-space: nowrap;
    }

.footer-text {
    color: #7a828a;
    font-size: 0.85rem;
}

.mobile-nav .nav-link {
    color: #343a40;
    border-radius: 8px;
    margin-bottom: 4px;
    padding: 0.75rem 0.9rem;
}

    .mobile-nav .nav-link:hover {
        background: #eef4f8;
        color: var(--cium-primary);
    }

    .mobile-nav .nav-link.active {
        background: var(--cium-primary);
        color: #fff;
        font-weight: 600;
    }

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

    .btn-primary:hover,
    .btn-primary:focus {
        background-color: var(--cium-primary-dark);
        border-color: var(--cium-primary-dark);
    }

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

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

@media (max-width: 991.98px) {
    .content-wrapper {
        padding: 1rem;
    }
}