* {
  margin: 0;
  border: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

body {
  background: linear-gradient(45deg, #8e2de2, #4a00e0);
  background-repeat: no-repeat;
  min-height: 100vh;
  min-width: 100vw;
  display: flex;
  align-items: center;
  justify-content: center;
}

main.container {
  background: white;
  width: 360px;
  padding: 2rem;
  box-shadow: 5px 5px 15px rgba(0, 0, 0, 0.2);
  border-radius: 8px;
}

main h2 {
  font-weight: 600;
  margin-bottom: 2rem;
  position: relative;
}

main h2::before {
  content: '';
  position: absolute;
  height: 4px;
  width: 25px;
  bottom: 3px;
  left: 0;
  border-radius: 8px;
  background: linear-gradient(45deg, #8e2de2, #4a00e0);
}

main h3 {
  font-weight: 400;
  margin-bottom: 1.5rem;
  position: relative;
}

.form {
  display: flex;
  flex-direction: column;
}

.input-field {
  position: relative;
  margin-bottom: 12px;
}

.form .input-field:first-child {
  margin-bottom: 1.5rem;
}

.input-field .underline::before {
  content: '';
  position: absolute;
  height: 1px;
  width: 100%;
  bottom: -5px;
  left: 0;
  background: rgba(0, 0, 0, 0.2);
}

.input-field .underline::after {
  content: '';
  position: absolute;
  height: 1px;
  width: 100%;
  bottom: -5px;
  left: 0;
  background: linear-gradient(45deg, #8e2de2, #4a00e0);
  transform: scaleX(0);
  transition: all .3s ease-in-out;
  transform-origin: left;
}

.input-field input[type=text]:focus ~ .underline::after {
  transform: scaleX(1);
}

.input-field input[type=text] {
  outline: none;
  font-size: 0.9rem;
  color: rgba(0, 0, 0, 0.7);
  width: 100%;
}

.input-field input::placeholder {
  color: rgba(0, 0, 0, 0.5);
}

.form .action {
  margin-top: 12px;
  padding: 0.4rem;
  width: 100%;
  background: linear-gradient(to left, #4776E6, #8e54e9);
  cursor: pointer;
  color: white;
  font-size: 0.9rem;
  font-weight: 300;
  border-radius: 4px;
  transition: all 0.3s ease;
  text-decoration: none;
  text-align: center;
}

.form .action:hover {
  letter-spacing: 0.5px;
  background: linear-gradient(to right, #4776E6, #8e54e9);
}