body {
    background-color: #f8f9fa;
}

.portal-nav {
    background-color: #fff;
    border-bottom: 1px solid #dee2e6;
}

.portal-main {
    min-height: calc(100vh - 56px);
    display: flex;
}

.sidebar {
    width: 250px;
    background-color: #fff;
    border-right: 1px solid #dee2e6;
}

.sidebar .nav-link {
    color: #333;
    padding: 1rem;
    border-left: 3px solid transparent;
}

.sidebar .nav-link.active,
.sidebar .nav-link:hover {
    color: #007bff;
    background-color: #e9ecef;
    border-left-color: #007bff;
}

.content {
    flex-grow: 1;
    padding: 2rem;
}