.mod-simpleshop-checkout {
    padding: 20px;
    background: #f9f9f9;
    border-radius: 8px;
    max-width: 500px;
    margin: 0 auto;
}

.simpleshop-product h3 {
    margin-top: 0;
    color: #333;
    font-size: 24px;
}

.simpleshop-description {
    margin-bottom: 20px;
    color: #666;
    line-height: 1.6;
}

.simpleshop-price,
.simpleshop-stock {
    margin-bottom: 15px;
    font-size: 16px;
}

.simpleshop-price .price-amount {
    font-size: 24px;
    color: #28a745;
    font-weight: bold;
    margin-left: 10px;
}

.simpleshop-stock .stock-amount {
    color: #28a745;
    font-weight: bold;
}

.simpleshop-checkout-form {
    margin-top: 30px;
}

.simpleshop-checkout-form .form-group {
    margin-bottom: 20px;
}

.simpleshop-checkout-form label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
    color: #333;
}

.simpleshop-checkout-form label .required {
    color: #dc3545;
}

.simpleshop-checkout-form .form-control {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.simpleshop-checkout-form .form-control:focus {
    outline: none;
    border-color: #007bff;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.simpleshop-checkout-btn {
    width: 100%;
    padding: 15px;
    font-size: 18px;
    font-weight: bold;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s;
    margin-top: 10px;
}

.simpleshop-checkout-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.simpleshop-messages {
    margin-top: 20px;
    padding: 15px;
    border-radius: 4px;
}

.simpleshop-checkout-form .form-check {
    margin-bottom: 20px;
    margin-top: 10px;
}

.simpleshop-checkout-form .form-check-input {
    width: 18px;
    height: 18px;
    margin-right: 8px;
    cursor: pointer;
    vertical-align: middle;
}

.simpleshop-checkout-form .form-check-label {
    cursor: pointer;
    font-weight: normal;
    display: inline-block;
    vertical-align: middle;
}

.simpleshop-checkout-form .form-check-label .required {
    color: #dc3545;
}

@media (max-width: 768px) {
    .mod-simpleshop-checkout {
        padding: 15px;
    }

    .simpleshop-product h3 {
        font-size: 20px;
    }

    .simpleshop-price .price-amount {
        font-size: 20px;
    }
}