.booknetic_next_step_btn.loading:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    position: relative;
}

.booknetic_next_step_btn.loading:disabled::after {
    content: "";
    position: absolute;
    right: calc(50% - 10px);
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    border: 2px solid rgba(0, 0, 0, 0.8);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    0% {
        transform: translateY(-50%) rotate(0deg);
    }

    100% {
        transform: translateY(-50%) rotate(360deg);
    }
}