.cashback-calculator-container {
    max-width: 600px;
    margin: 2rem auto;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-group input[type="number"] {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.value-option {
    margin: 1rem 0;
}

.value-option input[type="radio"] {
    margin-right: 8px;
}

button[type="submit"] {
    background: #2563eb;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button[type="submit"]:hover {
    background: #1d4ed8;
}

.result-summary {
    margin-top: 2rem;
    padding: 1rem;
    background: #e9ecef;
    border-radius: 4px;
}

.result-summary h3 {
    margin-top: 0;
    color: #1e40af;
}