.submit-btn {
    background: linear-gradient(135deg, #2ecc71, #27ae60);
    color: #fff;
    padding: 14px 20px;
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: 40px;
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0,0,0,.25);
}

/* Прямая светлая полоса */
.submit-btn::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 40%;
    height: 100%;
    background: linear-gradient(
        to right,
        rgba(255,255,255,0) 0%,
        rgba(255,255,255,0.35) 50%,
        rgba(255,255,255,0) 100%
    );
    animation: shine 3s ease-in-out infinite;
}

/* Текст поверх */
.submit-btn span {
    position: relative;
    z-index: 2;
}

/* Анимация движения слева направо */
@keyframes shine {
    0% {
        left: -40%;
    }
    50% {
        left: 110%;
    }
    100% {
        left: 110%;
    }
}

/* Эффект при наведении */
.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(0,0,0,.35);
}


@media (max-width : 800px) { 
.whatsapp-button {   
    bottom: 5px; /*отступ кнопки снизу от экрана*/
    left: 70px; /*отступ кнопки слева от экрана(right - справа)*/
  }
}
.whatsapp-button {
       background: #25D366;
       border: 3px solid #1cc15a;
       border-radius: 50%;
       box-shadow: 0 8px 10px rgba(7, 206, 112, 0.6);
       cursor: pointer;
       height: 68px;
       text-align: center;
       width: 68px;
       position: fixed;
       right: 5%;
       bottom: 8%;
       padding: 0px !important;
       z-index: 9999;
       transition: .3s;
       -webkit-animation: hoverWave linear 1s infinite;
       animation: hoverWave linear 1s infinite;
}
  
.whatsapp-button .text-button {
        height:68px;
        width:68px;        
        border-radius:50%;
        position:relative;
        overflow:hidden;
}
.whatsapp-button .text-button span {
    text-align: center;
    color:#23a455;
    opacity: 0;
    font-size: 0;
        position:absolute;
        right: 8px;
        top: 27px;
    line-height: 14px;
        font-weight: 600;
    transition: opacity .3s linear;
    font-family: 'montserrat', Arial, Helvetica, sans-serif;
}
.whatsapp-button .text-button:hover span {
        opacity: 1;
        font-size: 11px;
}
.whatsapp-button:hover i {
        display:none;
        color:#25D366;
        font-size:44px;
        transition:.3s;
}
.whatsapp-button:hover {
        z-index:1;
        background:#fff;
        color:transparent;
        transition:.3s;
}
}
.whatsapp-button i {
        color:#fff;
        font-size:44px;
        transition:.3s;
        line-height: 66px;transition: .5s ease-in-out;
        animation: 1200ms ease 0s normal none 1 running shake;
        animation-iteration-count: infinite;
        -webkit-animation: 1200ms ease 0s normal none 1 running shake;
        -webkit-animation-iteration-count: infinite;
}
@-webkit-keyframes hoverWave {
        0% {
        box-shadow:0 8px 10px rgba(7,206,112,0.3),0 0 0 0 rgba(7,206,112,0.2),0 0 0 0 rgba(7,206,112,0.2)
}
40% {
        box-shadow:0 8px 10px rgba(7,206,112,0.3),0 0 0 15px rgba(7,206,112,0.2),0 0 0 0 rgba(7,206,112,0.2)
}
80% {
        box-shadow:0 8px 10px rgba(7,206,112,0.3),0 0 0 30px rgba(7,206,112,0),0 0 0 26.7px rgba(7,206,112,0.067)
}
100% {
        box-shadow:0 8px 10px rgba(7,206,112,0.3),0 0 0 30px rgba(7,206,112,0),0 0 0 40px rgba(7,206,112,0.0)
}
}@keyframes hoverWave {
        0% {
        box-shadow:0 8px 10px rgba(7,206,112,0.3),0 0 0 0 rgba(7,206,112,0.2),0 0 0 0 rgba(7,206,112,0.2)
}
40% {
        box-shadow:0 8px 10px rgba(7,206,112,0.3),0 0 0 15px rgba(7,206,112,0.2),0 0 0 0 rgba(7,206,112,0.2)
}
80% {
        box-shadow:0 8px 10px rgba(7,206,112,0.3),0 0 0 30px rgba(7,206,112,0),0 0 0 26.7px rgba(7,206,112,0.067)
}
100% {
        box-shadow:0 8px 10px rgba(7,206,112,0.3),0 0 0 30px rgba(7,206,112,0),0 0 0 40px rgba(7,206,112,0.0)
}
}
@keyframes shake {
0% {
    transform: rotateZ(0deg);
        -ms-transform: rotateZ(0deg);
        -webkit-transform: rotateZ(0deg);
}
10% {
    transform: rotateZ(-30deg);
        -ms-transform: rotateZ(-30deg);
        -webkit-transform: rotateZ(-30deg);
}
20% {
    transform: rotateZ(15deg);
        -ms-transform: rotateZ(15deg);
        -webkit-transform: rotateZ(15deg);
}
30% {
    transform: rotateZ(-10deg);
        -ms-transform: rotateZ(-10deg);
        -webkit-transform: rotateZ(-10deg);
}
40% {
    transform: rotateZ(7.5deg);
        -ms-transform: rotateZ(7.5deg);
        -webkit-transform: rotateZ(7.5deg);
}
50% {
    transform: rotateZ(-6deg);
        -ms-transform: rotateZ(-6deg);
        -webkit-transform: rotateZ(-6deg);
}
60% {
    transform: rotateZ(5deg);
        -ms-transform: rotateZ(5deg);
        -webkit-transform: rotateZ(5deg);
}
70% {
    transform: rotateZ(-4.28571deg);
        -ms-transform: rotateZ(-4.28571deg);
        -webkit-transform: rotateZ(-4.28571deg);
}
80% {
    transform: rotateZ(3.75deg);
        -ms-transform: rotateZ(3.75deg);
        -webkit-transform: rotateZ(3.75deg);
}
90% {
    transform: rotateZ(-3.33333deg);
        -ms-transform: rotateZ(-3.33333deg);
        -webkit-transform: rotateZ(-3.33333deg);
}
100% {
    transform: rotateZ(0deg);
        -ms-transform: rotateZ(0deg);
        -webkit-transform: rotateZ(0deg);
}
}
@-webkit-keyframes shake {
0% {
    transform: rotateZ(0deg);
        -ms-transform: rotateZ(0deg);
        -webkit-transform: rotateZ(0deg);
}
10% {
    transform: rotateZ(-30deg);
        -ms-transform: rotateZ(-30deg);
        -webkit-transform: rotateZ(-30deg);
}
20% {
    transform: rotateZ(15deg);
        -ms-transform: rotateZ(15deg);
        -webkit-transform: rotateZ(15deg);
}
30% {
    transform: rotateZ(-10deg);
        -ms-transform: rotateZ(-10deg);
        -webkit-transform: rotateZ(-10deg);
}
40% {
    transform: rotateZ(7.5deg);
        -ms-transform: rotateZ(7.5deg);
        -webkit-transform: rotateZ(7.5deg);
}
50% {
    transform: rotateZ(-6deg);
        -ms-transform: rotateZ(-6deg);
        -webkit-transform: rotateZ(-6deg);
}
60% {
    transform: rotateZ(5deg);
        -ms-transform: rotateZ(5deg);
        -webkit-transform: rotateZ(5deg);
}
70% {
    transform: rotateZ(-4.28571deg);
        -ms-transform: rotateZ(-4.28571deg);
        -webkit-transform: rotateZ(-4.28571deg);
}
80% {
    transform: rotateZ(3.75deg);
        -ms-transform: rotateZ(3.75deg);
        -webkit-transform: rotateZ(3.75deg);
}
90% {
    transform: rotateZ(-3.33333deg);
        -ms-transform: rotateZ(-3.33333deg);
        -webkit-transform: rotateZ(-3.33333deg);
}
100% {
    transform: rotateZ(0deg);
        -ms-transform: rotateZ(0deg);
        -webkit-transform: rotateZ(0deg);
}
}