@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700;800;900&display=swap');
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}
body {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background-image: url('background.webp');
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
}
.box {
  position: relative;
  width: 380px;
  height: 420px;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border-radius: 16px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  color: white;
  overflow: hidden;
}
.box::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 380px;
  height: 420px;
  background: linear-gradient(0deg, transparent, transparent, #45f3ff, #45f3ff, #45f3ff);
  z-index: 1;
  transform-origin: bottom right;
  animation: animate 6s linear infinite;
}
.box::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 380px;
  height: 420px;
  background: linear-gradient(0deg, transparent, transparent, #45f3ff, #45f3ff, #45f3ff);
  z-index: 1;
  transform-origin: bottom right;
  animation: animate 6s linear infinite;
  animation-delay: -3s;
}
.borderLine {
  position: absolute;
  top: 0;
  inset: 0;
}
.borderLine::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 380px;
  height: 420px;
  background: linear-gradient(0deg, transparent, transparent, #2a2185, #2a2185, #2a2185);
  z-index: 1;
  transform-origin: bottom right;
  animation: animate 6s linear infinite;
  animation-delay: -1.5s;
}
.borderLine::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 380px;
  height: 420px;
  background: linear-gradient(0deg, transparent, transparent, #2a2185, #2a2185, #2a2185);
  z-index: 1;
  transform-origin: bottom right;
  animation: animate 6s linear infinite;
  animation-delay: -4.5s;
}
@keyframes animate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}
.box form {
  position: absolute;
  inset: 4px;
  background: #6e6d6d;
  padding: 50px 40px;
  border-radius: 8px;
  z-index: 2;
  display: flex;
  flex-direction: column;
}
.box form h2 {
  color: #00eeff;
  font-weight: 500;
  text-align: center;
  letter-spacing: 0.1em;
}
.box form .inputBox {
  position: relative;
  width: 300px;
  margin-top: 20px;
}
.box form .inputBox input {
  position: relative;
  width: 100%;
  padding: 20px 10px 10px;
  background: transparent;
  outline: none;
  border: none;
  box-shadow: none;
  color: #23242a;
  font-size: 1em;
  letter-spacing: 0.05em;
  transition: 0.5s;
  z-index: 10;
}
.box form .inputBox span {
  position: absolute;
  left: 0;
  padding: 20px 10px 10px;
  pointer-events: none;
  color: #dadada;
  font-size: 1em;
  letter-spacing: 0.05em;
  transition: 0.5s;
}
.box form .inputBox input:valid ~ span,
.box form .inputBox input:focus ~ span {
  color: #fff;
  font-size: 0.75em;
  transform: translateY(-34px);
}
.box form .inputBox i {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: #fff;
  border-radius: 4px;
  overflow: hidden;
  transition: 0.5s;
  pointer-events: none;
}
.box form .inputBox input:valid ~ i,
.box form .inputBox input:focus ~ i {
  height: 44px;
}
.box form .sub {
  border: none;
  outline: none;
  background: #fff;
  cursor: pointer;
  font-size: 0.9em;
  border-radius: 20px;
  font-weight: 600;
  width: 150px;
  padding: 9px 25px;
  margin: 20px auto 0;
  display: block;
}
.box form input[type='submit']:active {
  opacity: 0.8;
}