:root {
    --brand: #0d6efd;
    --brand-soft: #e8f0ff;
}

body {
    font-size: 0.95rem;
    background: #f8f9fa;
}

.sidebar {
    width: 260px;
    min-height: 100vh;
    position: sticky;
    top: 0;
}

.nav-link.active {
    background: var(--brand-soft);
    color: var(--brand);
    border-radius: 0.5rem;
    font-weight: 600;
}

.card {
    border: 1px solid #edf1f6;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.03);
}

@media (max-width: 991px) {
    .sidebar {
        width: 100%;
        min-height: auto;
        position: static;
    }

    .d-flex {
        flex-direction: column;
    }
}