#auth_sms_btn_send.is-loading,
#auth_code_btn_send.is-loading {
    pointer-events: none;
    opacity: 0.7;
}

#auth_sms_btn_send.is-loading .btn__text:before,
#auth_code_btn_send.is-loading .btn__text:before {
    content: '';
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-right: 8px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: #fff;
    border-radius: 50%;
    vertical-align: middle;
    animation: dw-auth-sms-spin 0.6s linear infinite;
}

.auth-form__captcha {
    position: relative;
    margin: 0 0 15px;
}

@keyframes dw-auth-sms-spin {
    to { transform: rotate(360deg); }
}