body {
    background-color: #f8f9fa;
}

.sidebar {
    min-height: 100vh;
    padding-top: 20px;
}

.nav-link {
    color: #333;
    font-weight: 500;
}

.nav-link:hover {
    color: #007bff;
}

.table th, .table td {
    vertical-align: middle;
}

.alert {
    margin-bottom: 20px;
}

.btn-primary, .btn-success, .btn-danger, .btn-warning {
    margin-right: 10px;
}


footer {
    position: fixed;
    bottom: 0;
    width: 100%;
}