.tax-calc-container * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

.tax-calc-container {
    font-family: 'Hiragino Sans','Yu Gothic','Meiryo',sans-serif;
    color: #333;
    padding: 20px 0;
}

.tax-calc-container .container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    background: linear-gradient(135deg,#1e40af 0%,#3b82f6 100%);
    border-radius: 20px;
}

.tax-calc-container .header {
    text-align: center;
    margin-bottom: 40px;
    color: #fff;
}

.tax-calc-container .header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.tax-calc-container .card {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.tax-calc-container .form-group {
    margin-bottom: 20px;
}

.tax-calc-container .form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: #1e40af;
}

.tax-calc-container .form-group input,
.tax-calc-container .form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
}

.tax-calc-container .checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.tax-calc-container .checkbox-group input[type="checkbox"] {
    width: auto;
    transform: scale(1.2);
    accent-color: #3b82f6;
}

.tax-calc-container .dependent-section {
    display: none;
    margin-top: 15px;
    padding: 15px;
    background: #f8fafc;
    border-radius: 8px;
    border-left: 4px solid #60a5fa;
}

.tax-calc-container .dependent-section.show {
    display: block;
}

.tax-calc-container .calculate-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg,#1e40af 0%,#3b82f6 100%);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 20px;
}

.tax-calc-container .calculate-btn:hover {
    transform: translateY(-2px);
}

.tax-calc-container .result-section {
    display: none;
    background: linear-gradient(135deg,#3b82f6 0%,#60a5fa 100%);
    color: #fff;
    text-align: center;
    margin-top: 20px;
    padding: 20px;
    border-radius: 16px;
}

.tax-calc-container .result-section.show {
    display: block;
}

.tax-calc-container .tax-amount {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
}