body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
}

.card {
    border: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.text-muted {
    font-size: 0.9rem;
}

.btn-group {
    gap: 0.5rem;
}

.navbar {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

@media (max-width: 768px) {
    .d-flex.justify-content-between {
        flex-direction: column;
        gap: 1rem;
    }
    
    .btn-group {
        width: 100%;
        display: flex;
    }
    
    .btn-group .btn {
        flex: 1;
    }
}