.sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
    padding: 48px 0 0;
    box-shadow: inset -1px 0 0 rgba(0,0,0,.1);
}

.sidebar .nav-link {
    font-weight: 500;
    color: #ddd;
}

.sidebar .nav-link:hover {
    color: #fff;
    background-color: rgba(255,255,255,0.1);
}

.card {
    transition: transform 0.2s;
}

.card:hover {
    transform: translateY(-5px);
}

.card h2 {
    font-size: 1.8rem;
    margin: 0;
}

.card h6 {
    margin-bottom: 10px;
    font-size: 0.85rem;
    opacity: 0.9;
}