:root{
  --text:#071827;
  --muted:#8a96a3;
  --line:#d9dee5;
  --active:#071827;
  --soft:#f5f7fa;
}

*{
  box-sizing:border-box;
}

html,
body{
  width:100%;
  height:100%;
  margin:0;
  padding:0;
}

body{
  font-family:"Montserrat","Inter",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  background:#fff;
  color:var(--text);
  overflow:hidden;
}

.login-page{
  min-height:100vh;
  width:100%;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:32px;
}

.login-shell{
  width:100%;
  max-width:380px;
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  justify-content:center;
  background:transparent;
  border:0;
  box-shadow:none;
}

.login-logo{
  width:86px;
  height:86px;
  object-fit:contain;
  display:block;
  margin:0 auto 28px;
}

.login-title{
  position:relative;
  width:100%;
  margin:0 0 42px;
  font-size:34px;
  line-height:1;
  font-weight:800;
  letter-spacing:-.04em;
  color:rgba(7,24,39,.12);
  overflow:hidden;
  text-align:left;
}

.login-title::before{
  content:attr(data-text);
  position:absolute;
  inset:0;
  width:0%;
  color:var(--text);
  overflow:hidden;
  white-space:nowrap;
  animation:titleFill 2.4s ease-in-out infinite;
}

@keyframes titleFill{
  0%{
    width:0%;
  }
  45%{
    width:100%;
  }
  70%{
    width:100%;
  }
  100%{
    width:0%;
  }
}

.login-form{
  width:100%;
  display:flex;
  flex-direction:column;
  gap:28px;
}

.field{
  position:relative;
  width:100%;
  padding-top:18px;
}

.field input{
  width:100%;
  height:42px;
  border:0;
  outline:0;
  background:transparent;
  font-size:17px;
  font-weight:500;
  color:var(--text);
  padding:0;
  text-align:left;
}

.field label{
  position:absolute;
  left:0;
  top:28px;
  font-size:15px;
  font-weight:500;
  color:var(--muted);
  pointer-events:none;
  transition:
    transform .22s ease,
    color .22s ease,
    font-size .22s ease;
}

.field input:focus + label,
.field input:valid + label{
  transform:translateY(-27px);
  font-size:12px;
  color:var(--active);
}

.field::before{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:1px;
  background:var(--line);
}

.field-line{
  position:absolute;
  left:0;
  bottom:0;
  width:0%;
  height:2px;
  background:var(--active);
  transition:width .28s ease;
}

.field input:focus ~ .field-line,
.field input:valid ~ .field-line{
  width:100%;
}

.login-btn{
  width:100%;
  margin-top:12px;
  height:46px;
  border:0;
  border-radius:999px;
  background:var(--text);
  color:#fff;
  font-size:14px;
  font-weight:700;
  letter-spacing:.02em;
  cursor:pointer;
  transition:
    transform .18s ease,
    opacity .18s ease,
    box-shadow .18s ease;
}

.login-btn:hover{
  transform:translateY(-1px);
  box-shadow:0 12px 30px rgba(7,24,39,.16);
}

.login-btn:active{
  transform:translateY(0);
  opacity:.86;
}

@media (max-width:520px){

  .login-page{
    padding:24px;
  }

  .login-shell{
    max-width:330px;
  }

  .login-logo{
    width:76px;
    height:76px;
    margin:0 auto 24px;
  }

  .login-title{
    font-size:31px;
    margin-bottom:38px;
  }
}