#shipping-simulator {
    margin: 25px 0;
    padding: 20px;
    background: #f9f9f9;
    border-radius: 12px;
    border: 1px solid #eee;
    font-family: inherit;
    max-width: 400px;
}

#shipping-simulator label {
    display: block;
    font-weight: 600;
    margin-bottom: 10px;
    font-size: 14px;
    color: #333;
}

#shipping-simulator .simulator-form-row {
    display: flex;
    gap: 10px;
    align-items: center;
}

#shipping-simulator #zipcode {
    flex: 1;
    height: 42px;
    padding: 0 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 15px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

#shipping-simulator #zipcode:focus {
    border-color: #666;
    box-shadow: 0 0 0 3px rgba(0,0,0,0.05);
    outline: none;
}

#shipping-simulator #idx-calc_shipping {
    height: 42px;
    padding: 0 25px;
    background-color: #333;
    color: #fff;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s;
}

#shipping-simulator #idx-calc_shipping:hover {
    background-color: #000;
}

#shipping-simulator #loading_simulator {
    margin-top: 15px;
    text-align: center;
}

.frenet-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid #eee;
    border-top: 3px solid #333;
    border-radius: 50%;
    animation: frenet-spin 0.8s linear infinite;
    display: inline-block;
    vertical-align: middle;
    margin-right: 10px;
}

@keyframes frenet-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

#shipping-simulator #simulator-data {
    margin-top: 20px;
}

#shipping-rates {
    list-style: none;
    padding: 0;
    margin: 0;
}

.li-frenet {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    background: #fff;
    border: 1px solid #eee;
    border-radius: 8px;
    margin-bottom: 8px;
    font-size: 14px;
    transition: transform 0.2s;
}

.li-frenet:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.span-frenet {
    font-weight: 600;
    color: #333;
}

.frenet-price {
    font-weight: 700;
    color: #2ecc71;
}

.frenet-delivery {
    display: block;
    font-size: 12px;
    color: #888;
    margin-top: 2px;
}

.frenet-error {
    color: #e74c3c;
    font-size: 13px;
    margin-top: 10px;
    padding: 10px;
    background: #fdf2f2;
    border-radius: 6px;
    border-left: 4px solid #e74c3c;
}