.iwc-calculator {
    margin: 16px 0;
    padding: 16px;
    border: 1px solid #e5e5e5;
    border-radius: 6px;
    background: #fafafa;
    max-width: 480px;
}

.iwc__header {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
    color: #333;
}

.iwc__row {
    display: grid;
    grid-template-columns: 1fr 140px;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}

.iwc__row--checkbox {
    grid-template-columns: 1fr;
}

.iwc__label {
    font-size: 13px;
    color: #333;
}

.iwc__input,
.iwc__select {
    width: 100%;
    box-sizing: border-box;
    padding: 6px 8px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 14px;
}

.iwc__input--error {
    border-color: #d70000;
    background: #fff5f5;
}

.iwc__error {
    grid-column: 1 / -1;
    color: #d70000;
    font-size: 12px;
    min-height: 14px;
    margin-top: -6px;
}

.iwc__checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: #333;
    cursor: pointer;
}

.iwc__warning {
    background: #fff3cd;
    border: 1px solid #ffe08a;
    color: #7a5c00;
    border-radius: 4px;
    padding: 8px 10px;
    font-size: 13px;
    margin-bottom: 10px;
}

.iwc__button {
    display: inline-block;
    width: 100%;
    padding: 10px 16px;
    border: none;
    border-radius: 4px;
    background: #a5a199;
    color: #2b2a26;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
}

.iwc__button:hover {
    background: #8f8b81;
}

.iwc__result {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid #e0e0e0;
}

.iwc__result-rolls {
    font-size: 20px;
    color: #222;
}

.iwc__result-rolls strong {
    font-size: 24px;
}

.iwc__result-price {
    font-size: 16px;
    color: #333;
    margin-top: 6px;
}

.iwc__result-details {
    margin-top: 10px;
    font-size: 12px;
    color: #888;
    display: grid;
    grid-gap: 3px;
}

@media (max-width: 480px) {
    .iwc-calculator {
        max-width: 100%;
    }

    .iwc__row {
        grid-template-columns: 1fr;
    }
}