*{
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: 'popins', sans-serif;
}
body{
display: flex;
justify-content: center;
align-items: center;
min-height: 100vh;
background: linear-gradient(-40deg, #e2e2e2, #c9d6ff, #d1c4ff,  #e2e2e2);
background-size: 400% 400%;
animation: gradientBG 15s ease infinite;
}
@keyframes gradientBG{
0%{background-position: 0% 50%;}
50%{background-position: 100% 50%;}
100%{background-position: 0% 50%;}
}

.container{
position: relative;
width: 850px;
height: 550px;
background: #fff;
border-radius: 30px;
box-shadow: 0 0 30px rgba(0, 0, 0, .2);
margin: 20px;
overflow: hidden;
}

.form-box{
position: absolute;
right: 0;
width: 50%;
height: 100%;
background: #fff;
display: flex;
align-items: center;
color: #333;
text-align: center;
padding: 40px;
z-index: 1;
transition: .6s ease-in-out 1.2s, visibility 0s 1s;
}
.container.active .form-box{
    right: 50%;
}
.container.active .form-box.register{
    visibility: visible;
}
.form-box.register{
    visibility: hidden;
}
form{
    width: 100%;
}

.container h1{
font-size: 36px;
margin: -10px 0;
}
.input-box{
position: relative;
margin: 30px 0;
}
.input-box input{
width: 100%;
padding: 13px 50px 13px 20px;
background: #eee;
border-radius: 8px;
border: none;
outline: none;
font-size: 16px;
color: #333;
font-weight: 500;
}
.input-box input::placeholder{
color: #888;
font-weight: 400;
}
.input-box input:focus{
outline: 2px solid #7494ec;
box-shadow: 0 0 5px rgba(116, 148, 236,  0.5);
transition: .1s;
}
.input-box i{
color: #888;
position: absolute;
right: 20px;
top: 50%;
transform: translateY(-50%);
font-size: 20px;
}
.forgot-link{
    margin: -15px 0 15px;
}
.forgot-link a{
font-size: 14.5px;
color: #333;
text-decoration: none;
}
.btn{
width: 100%;
height: 48px;
background: purple;
border-radius: 8px;
box-shadow: 0 0 10px rgba(0, 0, 0, .1);
border: none;
cursor: pointer;
font-size: 16px;
color: #fff;
font-weight: 600;
}


.container p{
font-size: 14.5px;
margin: 15px 0;
}
.social-icons{
display: flex;
justify-content: center;
}
.social-icons a.google:hover{
transform: scale(1.2);
background: #db4437;
color: #fff;
border-color: #db4437;
}
.social-icons a.facebook:hover{
transform: scale(1.2);
background: #1877f2;
color: #fff;
border-color: #1877f2;
}
.social-icons a.github:hover{
transform: scale(1.2);
background: #333;
color: #fff;
border-color: #333;
}
.social-icons a.linkedin:hover{
transform: scale(1.2);
background: #0a66c2;
color: #fff;
border-color: #0a66c2;
}
.social-icons a{
display: inline-flex;
padding: 10px;
border: 2px solid #ccc;
border-radius: 8px;
font-size: 24px;
color: #333;
text-decoration: none;
margin: 0 8px;
transition: all 0.3s ease;
}

.toggle-box{
position: absolute;
width: 100%;
height: 100%;
}
.toggle-box::before{
content: '';
left: -250%;
border-radius: 150px;
position: absolute;
width: 300%;
height: 100%;
background: purple;
z-index: 2;
transition: 1.8s ease-in-out;
}
.container.active .toggle-box::before{
    left: 50%;
}
.toggle-panel{
position: absolute;
width: 50%;
height: 100%;
color: #fff;
display: flex;
flex-direction: column;
text-align: center;
justify-content: center;
z-index: 2;
transition: .6s ease-in-out;
}
.toggle-panel .toggle-left{
left: 0;
transition-delay: 1.2s;
}
.container.active .toggle-panel.toggle-left{
    left: -50%;
    transition-delay:  .6s;
}
.toggle-panel.toggle-right{
right: -50%;
transition-delay: .6s;
}
.container.active .toggle-panel.toggle-right{
    right: 0;
    transition-delay: 1.2s;
}
.toggle-panel p{
    margin-bottom: 20px;
}
.toggle-panel .btn{
width: 160px;
height: 46px;
background: transparent;
border: 2px solid #fff;
box-shadow: none;
}



@media screen and(max-width: 650px) {
    .container{
        height: calc(100vh - 40px);
    }

.form-box{
bottom: 0;
width: 100%;
height: 70%;
}

.container.active .form-box{
right: 0;
bottom: 30%;
}

.toggle-box::before{
left: 0;
top:-270%;
width: 100%;
height: 300%;
border-radius: 20px;
}

.container.active .toggle-box::before{
left: 0;
top: 70%;
}

.toggle-panel{
width: 100%;
height: 30%;
}

.toggle-panel.toggle-left{
left: 0;
top: -30%;
}

.container.active .toggle-panel.toggle-left{
left: 0;
bottom: -30%;
}

.toggle-panel.toggle-right{
right: 0;
bottom: -30%;
}

.container.active .toggle-panel.toggle-right{
    bottom: 0;
 }


@media screen and(max-width:650px) {
    .form-box{
        padding: 20px;
    }

.toggle-panel h1{
    font-size: 30px;
}

.toggle-box::before{
left: 0;
top: -270%;
width: 100%;
height: 300%;
border-radius: 20vw;
}

.container.active .toggle-box::before{
left: 0;
top: 70%;
}

.toggle-panel{
width: 100%;
height: 30%;
}

.toggle-panel.toggle-left{
    top: 0;
}

.container.active .toggle-panel.toggle-left{
left: 0;
top: -30%;
}

.toggle-panel.toggle-right{
right: 0;
bottom: -30%;
}

.container.active .toggle-panel.toggle-right{
    bottom: 0;
}
}

.toggle-panel h1{
    font-size: 30px;
}
}