.viettel-post-container {
    background: #fff;
    border: 1px solid #ccd0d4;
    border-radius: 4px;
    padding: 20px;
    margin-top: 20px;
    max-width: 800px;
}

.viettel-post-container .form-table th {
    width: 200px;
    font-weight: 600;
    vertical-align: top;
    padding: 20px 10px 20px 0;
}

.viettel-post-container .form-table td {
    padding: 15px 10px 20px;
}

.viettel-post-container input[type="text"],
.viettel-post-container input[type="password"] {
    width: 100%;
    max-width: 400px;
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.viettel-post-container input[disabled] {
    background-color: #f7f7f7;
    color: #666;
}

.viettel-post-container .submit {
    margin: 20px 0 10px 0;
    padding: 0;
    border-top: 1px solid #ddd;
    padding-top: 20px;
}

.viettel-post-container .button {
    margin-right: 10px;
    padding: 8px 16px;
    font-size: 14px;
    height: auto;
    line-height: 1.4;
}

.viettel-post-container .button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.viettel-messages {
    margin-top: 20px;
}

.viettel-messages .notice {
    padding: 12px;
    margin: 5px 0 15px;
    border-left: 4px solid #ddd;
}

.viettel-messages .notice-success {
    border-left-color: #00a32a;
    background-color: #f7fcf0;
}

.viettel-messages .notice-error {
    border-left-color: #d63638;
    background-color: #fcf2f3;
}

.viettel-messages .notice p {
    margin: 0;
    font-size: 14px;
}

.viettel-post-container .description {
    color: #666;
    font-style: italic;
    margin-top: 5px;
    font-size: 13px;
}

.viettel-post-container h1 {
    color: #23282d;
    font-size: 23px;
    margin: 0 0 20px;
    padding: 0;
    font-weight: 400;
}

/* Payment Timing Selection Styles */
.payment-timing-row {
    background-color: #f9f9f9;
    border-top: 1px solid #e1e5e9;
}

.payment-timing-row h4 {
    margin: 0 0 15px 0;
    color: #333;
    font-size: 18px;
    font-weight: 600;
}

.payment-timing-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.payment-timing-options .radio-option {
    display: flex;
    align-items: center;
    padding: 15px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    background-color: #fff;
    cursor: pointer;
    transition: all 0.3s ease;
    margin: 0;
}

.payment-timing-options .radio-option:hover {
    border-color: #007cba;
    box-shadow: 0 2px 8px rgba(0, 124, 186, 0.1);
}

.payment-timing-options .radio-option input[type="radio"] {
    margin: 0 12px 0 0;
    width: 18px;
    height: 18px;
}

.payment-timing-options .radio-option input[type="radio"]:checked {
    accent-color: #007cba;
}

.payment-timing-options .radio-option.selected,
.payment-timing-options .radio-option input:checked + .option-icon + .option-content {
    border-color: #007cba;
    background-color: #f0f8ff;
}

.payment-timing-options .option-icon {
    font-size: 24px;
    margin-right: 12px;
}

.payment-timing-options .option-content {
    flex: 1;
}

.payment-timing-options .option-title {
    display: block;
    font-weight: 600;
    color: #333;
    font-size: 16px;
    line-height: 1.4;
}

.payment-timing-options .option-desc {
    display: block;
    color: #666;
    font-size: 13px;
    margin-top: 3px;
}

/* Mobile responsive styles */
@media (max-width: 768px) {
    .payment-timing-options {
        gap: 10px;
    }

    .payment-timing-options .radio-option {
        padding: 12px;
    }

    .payment-timing-options .option-icon {
        font-size: 20px;
        margin-right: 10px;
    }

    .payment-timing-options .option-title {
        font-size: 15px;
    }

    .payment-timing-options .option-desc {
        font-size: 12px;
    }
}

/* Integration with WooCommerce checkout table */
.woocommerce-checkout-review-order-table .payment-timing-row td {
    padding: 20px;
    border-bottom: 1px solid #e1e5e9;
}

/* Loading state styles */
.payment-timing-options .radio-option.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Accessibility improvements */
.payment-timing-options .radio-option:focus-within {
    outline: 2px solid #007cba;
    outline-offset: 2px;
}