:root {
    --poppins: 'Poppins', sans-serif;
    --red: hsl(0, 100%, 74%);
    --green: hsl(154, 59%, 51%);
    --blue: hsl(248, 32%, 49%);
    --dark-blue: hsl(249, 10%, 26%);
    --grayish-blue: hsl(246, 25%, 77%);
}

html {
    box-sizing: border-box;
    font-size: 1em;
    font-family: var(--poppins);
    color: whitesmoke;
}

*,
*::after,
*::before {
  box-sizing: inherit;
}

* {
  margin: 0;
  padding: 0;
}


body {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  padding:5.5em 1.6em 4.5em 1.6em;
  background-color: var(--red);
  background-image: url('/images/bg-intro-mobile.png');
  background-repeat: no-repeat;
}

footer {
  position: absolute;
  bottom: .1em;
  background-color: var(--blue);
  padding: .1em .5em;
  border-radius: 1em;
}

.hidden {
  display: none;
}

.text-section {
  text-align: center;
}

.text-section h1 {
  font-size: 1.7rem;
  padding-bottom: .6em;
  transition: .5s;
}

.form-section {
  padding-top: 3.9em;
  display: flex;
  flex-direction: column;
  gap: 1.6em;
  
}

.form-section .offer {
  background-color: var(--blue);
  padding: 1.2em 2.5em;
  border-radius: .6em;
  text-align: center;
  box-shadow: 0 .5em 0 rgba(0, 0, 0, .15);
}

.offer h2 {
  line-height: 1.6;
  font-weight: lighter;
  font-size: 1rem;
}

.offer h2 b {
  font-weight: 700;
}

.form-section .form{
  background-color: white;
  padding: 1.5em;
  border-radius: .6em;
  box-shadow: 0 .5em 0 rgba(0, 0, 0, .15);
}

.form-section form {
  display: flex;
  flex-direction: column;
  gap: 1em;
}

.input-container {
  position: relative;
  display: flex;
  flex-direction: column;
}

.input-container em {
  color: var(--red);
  font-size: .7rem;
  text-align: right;
}

.input-container em.active {
  display: block;
}

.form-section form input {
  padding: 1.3em 2em;
  font-size: .95rem;
  font-family: var(--poppins);
  width: 100%;
  font-weight: 500;
  border-radius: .3em;
  border: .01em solid var(--grayish-blue);
  transition: .5s;
}

.form-section form input::placeholder {
  color: var(--dark-blue);
}

.form-section form input:focus {
  border-color: var(--dark-blue);
}

.form-section form .claim-btn {
  padding: 1em;
  font-size: .95rem;
  letter-spacing: .02em;
  text-transform: uppercase;
  font-family: var(--poppins);
  border: none;
  font-weight: 500;
  border-radius: .4em;
  background-color: var(--green);
  border-bottom: .3em solid hsl(154, 59%, 45%);
  transition: .5s;
  color: whitesmoke;
}

.form-section form .claim-btn:hover {
  background-color: hsl(154, 59%, 48%);
}

.form-section form .claim-btn:focus {
  border-bottom: .3em solid hsl(154, 59%, 48%);
}

.form-section form .acknowledgement {
  font-size: .7rem;
  padding: 0 1.8em;
  text-align: center;
  color: var(--grayish-blue);
}

.form-section form .terms {
  text-decoration: none;
  font-weight: 700;
  color: var(--red);
}











.attribution {
  font-size: 0.6875rem;
  text-align: center;
}
.attribution a {
  color: var(--green);
}