*, *:before, *:after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
    height: 100vh;
    margin: auto;
    display: grid;
    place-items: center;
  font-family: 'Open Sans', Helvetica, Arial, sans-serif;
  background-image: linear-gradient(to top, #f3e7e9 0%, #e3eeff 99%, #e3eeff 100%);
}

input, button {
  border: none;
  outline: none;
  background: none;
  font-family: 'Open Sans', Helvetica, Arial, sans-serif;
}

.cont {
  overflow: hidden;
  position: relative;
  width: 900px;
  height: 550px;
  margin: auto;
  background: #fff;
  border-radius: 20px;
}

.form {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
  position: relative;
  width: 640px;
  height: 100%;
  -webkit-transition: -webkit-transform 1.2s ease-in-out;
  transition: -webkit-transform 1.2s ease-in-out;
  transition: transform 1.2s ease-in-out;
  transition: transform 1.2s ease-in-out, -webkit-transform 1.2s ease-in-out;
}

.sub-cont {
  overflow: hidden;
  position: absolute;
  left: 640px;
  top: 0;
  width: 900px;
  height: 100%;
  padding-left: 260px;
  background: #fff;
  -webkit-transition: -webkit-transform 1.2s ease-in-out;
  transition: -webkit-transform 1.2s ease-in-out;
  transition: transform 1.2s ease-in-out;
  transition: transform 1.2s ease-in-out, -webkit-transform 1.2s ease-in-out;
}
.cont.s--signup .sub-cont {
  -webkit-transform: translate3d(-640px, 0, 0);
          transform: translate3d(-640px, 0, 0);
}

button {
  display: block;
  margin: 0 auto;
  width: 260px;
  height: 36px;
  border-radius: 30px;
  color: #fff;
  font-size: 15px;
  cursor: pointer;
}

.img {
  overflow: hidden;
  z-index: 2;
  position: absolute;
  left: 0;
  top: 0;
  width: 260px;
  height: 100%;
  padding-top: 360px;
}
.img:before {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  width: 900px;
  height: 100%;
  background-image: url("../img/login-background.jpg");
  background-size: cover;
  -webkit-transition: -webkit-transform 1.2s ease-in-out;
  transition: -webkit-transform 1.2s ease-in-out;
  transition: transform 1.2s ease-in-out;
  transition: transform 1.2s ease-in-out, -webkit-transform 1.2s ease-in-out;
}
.img:after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
}
.cont.s--signup .img:before {
  -webkit-transform: translate3d(640px, 0, 0);
          transform: translate3d(640px, 0, 0);
}
.img__text {
  z-index: 2;
  position: absolute;
  left: 0;
  top: 50px;
  width: 100%;
  padding: 0 20px;
  text-align: center;
  color: #fff;
  -webkit-transition: -webkit-transform 1.2s ease-in-out;
  transition: -webkit-transform 1.2s ease-in-out;
  transition: transform 1.2s ease-in-out;
  transition: transform 1.2s ease-in-out, -webkit-transform 1.2s ease-in-out;
}
.img__text h2 {
  margin-bottom: 10px;
  font-weight: normal;
}
.img__text p {
  font-size: 14px;
  line-height: 1.5;
}
.cont.s--signup .img__text.m--up {
  -webkit-transform: translateX(520px);
          transform: translateX(520px);
}
.img__text.m--in {
  -webkit-transform: translateX(-520px);
          transform: translateX(-520px);
}
.cont.s--signup .img__text.m--in {
  -webkit-transform: translateX(0);
          transform: translateX(0);
}
.img__btn {
  overflow: hidden;
  z-index: 2;
  position: relative;
  width: 100px;
  height: 36px;
  margin: 0 auto;
  background: transparent;
  color: #fff;
  text-transform: uppercase;
  font-size: 15px;
  cursor: pointer;
}
.img__btn:after {
  content: '';
  z-index: 2;
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  border: 2px solid #fff;
  border-radius: 30px;
}
.img__btn span {
  position: absolute;
  left: 0;
  top: 0;
  display: -webkit-box;
  display: flex;
  -webkit-box-pack: center;
          justify-content: center;
  -webkit-box-align: center;
          align-items: center;
  width: 100%;
  height: 100%;
  -webkit-transition: -webkit-transform 1.2s;
  transition: -webkit-transform 1.2s;
  transition: transform 1.2s;
  transition: transform 1.2s, -webkit-transform 1.2s;
}
.img__btn span.m--in {
  -webkit-transform: translateY(-72px);
          transform: translateY(-72px);
}
.cont.s--signup .img__btn span.m--in {
  -webkit-transform: translateY(0);
          transform: translateY(0);
}
.cont.s--signup .img__btn span.m--up {
  -webkit-transform: translateY(72px);
          transform: translateY(72px);
}

h2 {
  width: 100%;
  font-size: 26px;
  text-align: center;
}

.submit {
  margin-top: 40px;
  margin-bottom: 20px;
  background: #d4af7a;
  text-transform: uppercase;
}

.sign-in {
  -webkit-transition-timing-function: ease-out;
          transition-timing-function: ease-out;
}
.cont.s--signup .sign-in {
  -webkit-transition-timing-function: ease-in-out;
          transition-timing-function: ease-in-out;
  -webkit-transition-duration: 1.2s;
          transition-duration: 1.2s;
  -webkit-transform: translate3d(640px, 0, 0);
          transform: translate3d(640px, 0, 0);
}

.sign-up {
  -webkit-transform: translate3d(-900px, 0, 0);
          transform: translate3d(-900px, 0, 0);
}
.cont.s--signup .sign-up {
  -webkit-transform: translate3d(0, 0, 0);
          transform: translate3d(0, 0, 0);
}

.icon-link {
  position: absolute;
  left: 5px;
  bottom: 5px;
  width: 32px;
}
.icon-link img {
  width: 100%;
  vertical-align: top;
}
.icon-link--twitter {
  left: auto;
  right: 5px;
}

.form-control {
  --default-color: currentColor;
  --border-bottom-color: currentColor;
  position: relative;
  width: 260px;
  margin: 25px auto 0;
  border-bottom: 1px solid var(--border-bottom-color);
}
.form-control::after {
  position: absolute;
  content: "";
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  background: #3498db;
  transform: scaleX(0);
  transform-origin: left;
  transition: 0.3s;
}
.form-control:focus-within::after {
  transform: scaleX(1);
}
.form-control input {
    width: 100%;
  padding: 8px 0;
  font-size: inherit;
  font-weight: inherit;
  color: currentColor;
  background: transparent;
  border: none;
  outline: none;
}
/*.form-control input:invalid ~ label {
  color: #e74c3c;
}
.form-control input:valid ~ label {
  color: #3498db;
}
.form-control input:placeholder-shown ~ label {
  color: var(--default-color);
}*/
.form-control input:focus ~ label, .form-control input:not(:placeholder-shown) ~ label {
  transform: translateY(-120%) scale(0.75);
}
.form-control label {
  position: absolute;
  top: 8px;
  left: 0;
  color: #cfcfcf;
  transition: 0.3s;
  transform-origin: left;
}

.form .keep_pwd {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    width: 260px;
    font-size: 12px;
    color: #cfcfcf;
    margin: 12px 0 0;
}

.form .keep_pwd div {
    display: flex;
    align-items: center;
}
.form .keep_pwd p {
  font-size: 12px;
  color: #cfcfcf;
}

.error {
    border: 2px solid #ff5b5b;
    border-radius: 4px;
}

.tips {
    display: none;
    margin-top: 5px; 
    color: #ff5b5b;
    font-size: 14px;
    background: url(../img/error.png) no-repeat;
    padding: 0 0 0 24px;
    line-height: 18px;
    height: 18px;
}