.mbcpc-calculator {
    max-width: 860px;
    margin: 24px auto;
    padding: 24px;
    border: 1px solid #e5e7eb;
    border-radius: 12px;
    background: #ffffff;
    box-shadow: 0 8px 24px rgba(0,0,0,0.04);
}
.mbcpc-calculator h2,
.mbcpc-calculator h3 {
    margin-top: 0;
}
.mbcpc-intro {
    background: #f7fbff;
    border-left: 4px solid #0b5ed7;
    padding: 12px 14px;
    border-radius: 6px;
}
.mbcpc-form label,
.mbcpc-payment-form label {
    display: block;
    margin: 14px 0 6px;
    font-weight: 700;
}
.mbcpc-form select,
.mbcpc-form textarea,
.mbcpc-form input,
.mbcpc-payment-form input {
    width: 100%;
    max-width: 100%;
    padding: 10px 12px;
    border: 1px solid #cbd5e1;
    border-radius: 7px;
    box-sizing: border-box;
}
.mbcpc-form textarea {
    min-height: 150px;
}
.mbcpc-word-count {
    margin-top: 8px;
    font-weight: 700;
    color: #0f172a;
}
.mbcpc-contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-top: 10px;
}
.mbcpc-contact-grid p {
    margin: 0;
}
.mbcpc-button,
.mbcpc-payment-link {
    display: inline-block;
    margin-top: 18px;
    background: #0b5ed7;
    color: #ffffff !important;
    border: 0;
    border-radius: 8px;
    padding: 12px 22px;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
}
.mbcpc-button:hover,
.mbcpc-payment-link:hover {
    opacity: 0.92;
}
.mbcpc-result,
.mbcpc-payment-section {
    margin-top: 24px;
    padding: 18px;
    border-radius: 10px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
}
.mbcpc-final-price {
    font-size: 20px;
    color: #0b5ed7;
}
.mbcpc-success-note {
    color: #15803d;
    font-weight: 700;
}
.mbcpc-alert-error {
    padding: 12px 14px;
    border-radius: 8px;
    border: 1px solid #fecaca;
    background: #fef2f2;
    color: #991b1b;
}
@media (max-width: 720px) {
    .mbcpc-calculator {
        padding: 16px;
    }
    .mbcpc-contact-grid {
        grid-template-columns: 1fr;
    }
}