.calculators-plugin {
    font-family: 'Segoe UI', Arial, sans-serif;
    background: #fff;
    border-radius: 1rem;
    box-shadow: 0 4px 24px rgba(0,0,0,0.08);
    padding: 2rem;
    max-width: 420px;
    margin: 2rem auto;
}
.calculators-plugin h3 {
    color: #0d6efd;
    font-weight: 600;
    margin-bottom: 1.5rem;
}
.calculators-plugin .form-control {
    border-radius: 0.5rem;
    border: 1px solid #dee2e6;
}
.calculators-plugin .btn-primary {
    background: linear-gradient(90deg, #0d6efd 60%, #6610f2 100%);
    border: none;
    border-radius: 0.5rem;
    font-weight: 500;
    box-shadow: 0 2px 8px rgba(13,110,253,0.08);
}
.calculators-plugin .btn-primary:hover {
    background: linear-gradient(90deg, #6610f2 60%, #0d6efd 100%);
}
.calculators-plugin .result {
    font-size: 1.2rem;
    margin-top: 1rem;
    color: #198754;
    font-weight: 500;
}