.itmbc-wrapper {
    max-width: 600px;
    margin: 0 auto;
}

.itmbc-form {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 24px;
}

.itmbc-form h3 {
    margin-top: 0;
    margin-bottom: 16px;
}

.itmbc-row {
    margin-bottom: 16px;
    display: flex;
    flex-direction: column;
}

.itmbc-row label {
    font-weight: 600;
    margin-bottom: 6px;
}

.itmbc-row input,
.itmbc-row textarea {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 15px;
}

.itmbc-pricing {
    margin-bottom: 24px;
}

.itmbc-pricing h3 {
    margin-bottom: 4px;
}

.itmbc-pricing-intro {
    color: #555;
    font-size: 14px;
    margin-top: 0;
    margin-bottom: 16px;
}

.itmbc-plans-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
}

.itmbc-plan-card {
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 14px;
    background: #fff;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.itmbc-plan-card .itmbc-plan-name {
    font-weight: 700;
    font-size: 16px;
}

.itmbc-plan-card .itmbc-plan-speed {
    font-size: 13px;
    color: #1d4ed8;
    font-weight: 600;
}

.itmbc-plan-card .itmbc-plan-price {
    font-size: 22px;
    font-weight: 700;
    margin-top: 4px;
}

.itmbc-plan-card .itmbc-plan-price span {
    font-size: 13px;
    font-weight: 400;
    color: #555;
}

.itmbc-plan-card .itmbc-plan-setup,
.itmbc-plan-card .itmbc-plan-contract {
    font-size: 12px;
    color: #777;
}

.itmbc-plan-card .itmbc-plan-desc {
    font-size: 13px;
    color: #444;
    margin-top: 4px;
}

.itmbc-plan-checkbox {
    margin-top: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
}

.itmbc-submit {
    background: #1d4ed8;
    color: #fff;
    border: none;
    padding: 12px 20px;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    width: 100%;
}

.itmbc-submit:hover {
    background: #1e40af;
}

.itmbc-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.itmbc-message {
    margin-top: 14px;
    padding: 12px;
    border-radius: 6px;
    font-size: 14px;
}

.itmbc-message.success {
    background: #ecfdf3;
    border: 1px solid #6ce9a6;
    color: #027a48;
}

.itmbc-message.error {
    background: #fef3f2;
    border: 1px solid #fda29b;
    color: #b42318;
}