#income-tax-calculator {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    box-sizing: border-box;
    font-family: inherit;
    background: #fff;
    padding: 20px;
}

#income-tax-calculator .calculator-input-group {
    margin-bottom: 15px;
}

#income-tax-calculator label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

#income-tax-calculator input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 16px;
    box-sizing: border-box;
}

#income-tax-calculator input:focus {
    border-color: #007bff;
    outline: none;
}

#income-tax-calculator .calculate-btn {
    width: 100%;
    padding: 14px;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.2s;
}

#income-tax-calculator .calculate-btn:hover {
    background-color: #0056b3;
}

#income-tax-calculator #resultText {
    margin-top: 20px;
    font-size: 16px;
    line-height: 1.5;
    color: #333;
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 4px;
    border-left: 4px solid #28a745;
    display: none;
}

@media (max-width: 480px) {
    #income-tax-calculator {
        padding: 20px;
    }
}