@import url('https://fonts.googleapis.com/css?family=Muli&display=swap');

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

body {
  background: linear-gradient(135deg, #4c669f, #3b5998, #192f6a);
  color: #fff;
  font-family: 'Muli', sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  overflow: hidden;
}

.container {
  background: rgba(0, 0, 0, 0.6);
  padding: 25px 50px;
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
  text-align: center;
}

.container h1 {
  font-size: 24px;
  margin-bottom: 20px;
}

.container a {
  text-decoration: none;
  color: #76c7f7;
  transition: color 0.3s ease;
}

.container a:hover {
  color: #a3daff;
}

.btn {
  cursor: pointer;
  display: inline-block;
  width: 100%;
  background: #76c7f7;
  padding: 12px;
  font-family: inherit;
  font-size: 16px;
  border: 0;
  border-radius: 5px;
  font-weight: bold;
  transition: background 0.3s, transform 0.2s;
}

.btn:hover {
  background: #5bb4e6;
}

.btn:active {
  transform: scale(0.97);
}

.text {
  margin-top: 25px;
  font-size: 14px;
}

.form-control {
  position: relative;
  margin: 20px 0 35px;
  width: 320px;
}

.form-control input {
  background-color: transparent;
  border: 0;
  border-bottom: 2px solid #fff;
  display: block;
  width: 100%;
  padding: 12px 0;
  font-size: 18px;
  color: #fff;
  transition: border-bottom-color 0.3s ease;
}

.form-control input:focus,
.form-control input:valid {
  outline: none;
  border-bottom-color: #76c7f7;
}

.form-control label {
  position: absolute;
  top: 12px;
  left: 0;
  pointer-events: none;
}

.form-control label span {
  display: inline-block;
  font-size: 18px;
  min-width: 5px;
  transition: transform 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55), color 0.3s ease;
}

.form-control input:focus ~ label span,
.form-control input:valid ~ label span {
  color: #76c7f7;
  transform: translateY(-25px);
}