@font-face {
  font-family: Roboto;
  src: url(/assets/fonts/Roboto-Regular.ttf), url(/assets/fonts/Roboto-Bold.ttf);
  font-weight: 400, 700;
}

:root {
  --color-red: hsl(4, 100%, 67%);
  --color-Dark-Slate-Grey: hsl(234, 29%, 20%);
  --color-Charcoal-Grey: hsl(235, 18%, 26%);
  --Grey: hsl(231, 7%, 60%);
  --White: hsl(0, 0%, 100%);

  --gradient-background: linear-gradient(to right, #ff527b, #ff644b);
}

*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: inherit;
}

html {
  font-size: 62.5%;
  box-sizing: border-box;
}

body {
  font-family: "Roboto", sans-serif;
  font-weight: 400;
  font-size: 1.6rem;
  background-color: var(--color-Charcoal-Grey);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card {
  width: 100%;
  max-width: 78rem;
  background-color: var(--White);
  padding: 2rem;
  border-radius: 2rem;
  display: grid;
  grid-template-columns: 1fr 32.5rem;
}

.card.success {
  display: none;
}

.card-text {
  padding: 4rem;
  margin-left: -2rem;
}

.card-image {
  background-image: url("./assets/images/illustration-sign-up-desktop.svg");
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  border-radius: 1rem;
}

.heading {
  font-size: 4.5rem;
  color: var(--color-Dark-Slate-Grey);
}

p {
  color: var(--color-Charcoal-Grey);
  font-size: 1.5rem;
}

.paragraph-upper {
  margin-block: 2rem;
}

ul {
  list-style: none;
}

.point {
  display: flex;
  margin-block: 1.5rem;
}

.point-icon {
  margin-right: 1.5rem;
}

.form-group {
  margin-block: 3.2rem;
  position: relative;
}

.label {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  display: block;
}

form input#mail,
form button.btn-submit {
  width: 100%;
  padding: 1.5rem 2rem;
  outline: none;
  border-radius: 5px;
  border: 1px solid var(--Grey);
}

form input#mail {
  margin-bottom: 2rem;
}

form input#mail.error {
  border: 1px solid var(--color-red);
  background-color: hsla(4, 100%, 67%, 0.4);
}

form button.btn-submit {
  background: var(--color-Dark-Slate-Grey);
  color: var(--White);
  font-weight: 700;
  border: none;
  cursor: pointer;
}

form button.btn-submit:hover {
  background: var(--gradient-background);
}

.err-msg {
  position: absolute;
  top: 0;
  right: 0;
  font-size: 1.2rem;
  color: var(--color-red);
  display: none;
}

.err-msg.visible {
  display: block;
}

.success-message-box {
  background-color: var(--White);
  padding: 4rem;
  border-radius: 2rem;
  width: 100%;
  max-width: 42rem;
  position: relative;
  display: none;
}

.success-icon {
  align-self: flex-start;
}

.success-message-box.success {
  display: flex;
  flex-direction: column;
}

.success-heading {
  font-size: 4.5rem;
  line-height: 1;
  margin-block: 2rem;
}

.success-paragraph {
  font-size: 1.4rem;
  line-height: 1.5;
}

.success-btn {
  background: var(--color-Dark-Slate-Grey);
  color: var(--White);
  font-weight: 700;
  width: 100%;
  cursor: pointer;
  padding: 1.5rem 2rem;
  outline: none;
  border: none;
  border-radius: 0.8rem;
  margin-block: 3rem 2rem;
}

.success-btn:hover {
  background: var(--gradient-background);
}

@media screen and (max-width: 50em) {
  .card {
    height: 100vh;
    border-radius: 0;
    padding: 0;
    grid-template-columns: 1fr;
    grid-template-rows: 35rem auto;
  }

  .card-image {
    border-radius: 0 0 1rem 1rem;
    grid-row: 1 / 2;
  }

  .card-text {
    padding: 4rem;
    margin-left: 0;
  }
}

@media screen and (max-width: 26.25em) {
  .success-message-box {
    border-radius: 0;
    height: 100vh;
    padding-top: 8rem;
  }

  .btn-container {
    flex-grow: 1;
    position: relative;
  }

  .success-btn {
    position: absolute;
    bottom: 0;
  }
}