:root {
  --color-red: hsl(4, 100%, 67%);
  --color-blue-800: hsl(234, 29%, 20%);
  --color-blue-700: hsl(235, 18%, 26%);
  --color-grey: hsl(0, 0%, 58%);
  --color-white: hsl(0, 0%, 100%);

  --text-base: 1rem;
  --font-regular: 400;
  --font-bold: 700;
  --fluid-heading: clamp(2rem, 1.4286rem + 2.8571vw, 4rem);
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font: inherit;
  line-height: calc(1em + 0.5rem);
}

[hidden] {
  display: none !important;
}

body {
  background-color: var(--color-blue-700);
  font-family: "Roboto", sans-serif;
  font-optical-sizing: auto;
  font-weight: var(--font-regular);
  font-style: normal;
  font-variation-settings: "wdth" 100;
  color: var(--color-blue-800);
}

main {
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-white);
}

.sign-up-card {
  display: grid;
  grid-template-areas:
    "image"
    "content";
  background-color: var(--color-white);
}

.image-design {
  grid-area: image;
  background-image: url("assets/images/illustration-sign-up-mobile.svg");
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  width: 100%;
  aspect-ratio: 375 / 283;
}

.content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-inline: 24px;
  padding-block: 40px;
}

.content > * + * {
  margin-top: 1.5rem;
}

h1 {
  font-size: var(--fluid-heading);
  font-weight: var(--font-bold);
}

ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
}

li {
  position: relative;
  padding-inline-start: 38px;
}

li::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 21px;
  aspect-ratio: 1;
  background-image: url("assets/images/icon-success.svg");
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
}

form {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
}

.label-wrapper {
  display: flex;
  justify-content: space-between;
}

label {
  font-weight: var(--font-bold);
}

.error-message[data-invalid="false"] {
  display: none;
}

.error-message[data-invalid="true"] {
  display: inline;
  color: var(--color-red);
  font-weight: var(--font-bold);
}

input {
  padding-inline: 24px;
  padding-block: 16px;
  border-radius: 8px;
  outline: 0;
  border: 1px solid var(--color-grey);
}

input:focus-visible {
  border-color: var(--color-blue-800);
}

input:valid {
  color: var(--color-blue-800);
  background-color: transparent;
}

input:user-invalid {
  border-color: red;
  color: red;
  background-color: rgb(250, 232, 230);
}

input[data-empty="true"]:user-invalid {
  border-color: var(--color-grey);
  color: var(--color-blue-800);
  background-color: transparent;
}

button {
  margin-block-start: 16px;
  padding-block: 16px;
  border: 0;
  border-radius: 8px;
  background: var(--color-blue-800);
  color: var(--color-white);
  cursor: pointer;
}

button:hover {
  background: linear-gradient(
    to right,
    rgb(236, 96, 123),
    rgb(236, 105, 99),
    rgb(237, 113, 75)
  );
  box-shadow: 0 16px 24px rgba(236, 105, 99, 0.5);
}

.success-card {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  background-color: var(--color-white);
  padding-inline: 24px;
  padding-block: 40px;
}

.success-card > * + * {
  margin-top: 1.5rem;
}

.success-card > p {
  flex-grow: 1;
}

.success-image {
  margin-block-start: 8rem;
  aspect-ratio: 1;
  width: 64px;
  background-image: url("assets/images/icon-success.svg");
  background-position: center;
  background-size: cover;
  background-repeat: no-repeat;
}

b {
  font-weight: var(--font-bold);
}

@media (min-width: 48rem) {
  .image-design {
    background-image: url("assets/images/illustration-sign-up-tablet.svg");
    min-width: 528px;
    aspect-ratio: 528 / 360;
  }
}

@media (min-width: 64rem) {
  main {
    background-color: transparent;
  }

  .sign-up-card {
    grid-template-areas: "content image";
    column-gap: 40px;
    padding: 24px;
    border-radius: 30px;
    max-width: 57.875rem;
  }

  .image-design {
    background-image: url("assets/images/illustration-sign-up-desktop.svg");
    min-width: 400px;
    aspect-ratio: 400 / 593;
  }

  .sign-up-heading {
    font-size: 3.75rem;
  }

  .success-card {
    align-self: center;
    max-width: 31.57rem;
    border-radius: 30px;
    padding-inline: 64px;
    padding-block: 48px;
  }

  .success-image {
    margin-block-start: 0;
  }
}