body {
    background-color: #f8f9fa;
}

.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
}

.card {
    box-shadow: 0 4px 6px rgba(0,0,0,.1);
    border: none;
    border-radius: 8px;
}

.card-header {
    border-radius: 8px 8px 0 0 !important;
}

.btn-primary {
    padding: 10px 20px;
    font-weight: 500;
}

.form-control {
    border-radius: 4px;
    padding: 10px;
}

.table {
    margin-top: 20px;
}

.table th {
    background-color: #f8f9fa;
    font-weight: 600;
}

.lead {
    color: #495057;
    margin-bottom: 20px;
}

#results {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}