body {
    background-color: #f8f9fa;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
.sidebar {
    min-height: 100vh;
    border-right: 1px solid #dee2e6;
}
.nav-link.active {
    font-weight: bold;
    color: #0d6efd !important;
}
.footer {
    margin-top: auto;
}