body {
    background-color: #F8F9FA;
    font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
}

.header-gradient {
    background: #007BFF;
    background: linear-gradient(to right, #007BFF, #4DA3FF);
    color: white;
}

.nav-tabs .nav-link.active {
    background-color: #007BFF;
    color: white;
    border-color: #007BFF;
}

.nav-tabs .nav-link {
    color: #007BFF;
}

.card {
    border: 1px solid #dee2e6;
    border-radius: 0.375rem;
}