body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #f8f9fa;
}

.navbar-brand {
    font-weight: 600;
}

.card {
    border: none;
    border-radius: 0.5rem;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid #dee2e6;
    font-weight: 600;
}

.table th {
    border-top: none;
    font-weight: 600;
    color: #495057;
    font-size: 0.875rem;
}

.btn {
    border-radius: 0.375rem;
    font-weight: 500;
}

.badge {
    font-weight: 500;
}

.nav-link {
    color: rgba(255, 255, 255, 0.75) !important;
    transition: color 0.15s ease-in-out;
}

.nav-link:hover {
    color: rgba(255, 255, 255, 0.95) !important;
}

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

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
}

@media (max-width: 768px) {
    .card-body {
        padding: 1rem;
    }
    
    .table-responsive {
        font-size: 0.875rem;
    }
}