body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.card {
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.card-header {
    border-radius: 10px 10px 0 0 !important;
}

.btn-primary {
    background-color: #4e73df;
    border-color: #4e73df;
}

.btn-primary:hover {
    background-color: #2e59d9;
    border-color: #2653d4;
}

.sidebar {
    background-color: #343a40;
    min-height: 100vh;
}

.nav-link {
    color: #adb5bd !important;
}

.nav-link:hover {
    color: #fff !important;
}

.nav-link.active {
    color: #fff !important;
    background-color: rgba(255, 255, 255, 0.1);
}