/* General styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
.sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    padding-top: 20px;
}
.nav-link {
    color: #333;
}
.nav-link:hover {
    background-color: #e9ecef;
}
.footer {
    margin-top: 50px;
}
.card {
    box-shadow: 0 0.125rem 0.25rem rgba(0,0,0,0.075);
}