body {
    background-color: #f0f8ff;
    font-family: 'Arial', sans-serif;
}

.container {
    max-width: 800px;
}

.calculator-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

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

.form-group label {
    font-weight: 600;
    color: #2c3e50;
}

.btn-calculate {
    width: 100%;
    padding: 12px;
    font-size: 1.1rem;
    margin-top: 1rem;
}

.result-box {
    margin-top: 2rem;
    padding: 1.5rem;
    background-color: #e8f4fc;
    border-radius: 8px;
    display: none;
}

.disclaimer {
    font-size: 0.9rem;
    color: #666;
    text-align: center;
}

.error-message {
    font-size: 0.9rem;
}

.calculation-details {
    background-color: #f8f9fa;
    padding: 1rem;
    border-radius: 8px;
    margin-top: 1.5rem;
}

.calculation-details h5 {
    color: #2c3e50;
    margin-bottom: 0.75rem;
}

.button-group {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

footer {
    margin-top: 3rem;
    padding: 2rem 0;
    background-color: #f8f9fa;
}

.legal-links a {
    color: #2c3e50;
    transition: opacity 0.2s;
}

.legal-links a:hover {
    opacity: 0.8;
    text-decoration: none;
}

.btn-primary, .btn-success {
    border-radius: 50px;
    padding: 10px 20px;
    font-weight: bold;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s ease, transform 0.3s ease;
}

.btn-primary:hover, .btn-success:hover {
    background-color: #0056b3;
    transform: translateY(-2px);
}

@media (max-width: 576px) {
    .calculator-card {
        padding: 1.5rem;
    }
}