@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/IBMPlexMono-SemiBold.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/IBMPlexMono-SemiBoldItalic.woff2") format("woff2");
  font-weight: 600;
  font-style: italic;
  font-display: swap;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --white: #ffffff;
  --black: #000000;

  --primary-color: #74c0c1;
  --secondary-color: rgba(225 227 221 / 0.5);

  --standard-box-shadow: 1px 2px 5px 0px rgba(0 0 0 / 0.1);
}

body {
  min-height: 100vh;
  align-items: stretch;
  justify-content: center;

  background-color: var(--secondary-color);

  font-family:
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Roboto,
    Oxygen,
    Ubuntu,
    Cantarell,
    "Open Sans",
    "Helvetica Neue",
    sans-serif;

  font-size: clamp(1rem, 0.25rem + 1vw, 1.5rem);
}

h1 {
  font-size: 1.95em;
}

h2 {
  font-size: 1.5625em;
}

h3 {
  font-size: 1.25em;
}

form,
textarea,
button,
input {
  font-family: inherit;
}

.flex {
  display: flex;
}

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

.flex-center {
  justify-content: center;
  align-items: center;
}

.flex-wrap {
  flex-wrap: wrap;
}

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

a {
  color: var(--black);
}

.background-section {
  flex-basis: 25%;

  padding: 6rem 0 0.75rem;

  justify-content: space-between;

  background-image: url(assets/background.jpg);
  background-repeat: no-repeat;
  background-position: center;
  background-size: cover;
}

.logo-and-title {
  color: var(--white);
  background-color: rgba(0 0 0 / 0.1);
  backdrop-filter: blur(10px);

  padding: 1rem;
  gap: 0.7rem;
}

.brand-title {
  font-family: "IBM Plex Mono";
  font-weight: 600;
}

.image-credit {
  align-self: center;

  font-size: 0.8rem;

  padding-inline: 0.5rem;
}

.form-section {
  --inline-padding: 3rem;
  --vertical-gap: 1.25rem;

  padding-block: var(--inline-padding);

  flex-basis: 75%;

  justify-content: center;
  gap: var(--vertical-gap);
}

.form-section > h2 {
  max-width: min(925px, 100%);
}

.white-background-wrapper {
  background-color: var(--white);

  margin-block: var(--vertical-gap);
  padding: 1rem var(--inline-padding) 1.5rem;

  box-shadow: var(--standard-box-shadow);
}

.white-background-content {
  max-width: min(700px, 100%);

  --fields-row-vertical-gap: 1rem;
}

.white-background-content > h3 {
  margin-bottom: var(--fields-row-vertical-gap);
}

.fields-row {
  column-gap: 3rem;
  row-gap: var(--fields-row-vertical-gap);
  margin-bottom: var(--fields-row-vertical-gap);
}

label {
  text-transform: uppercase;

  font-size: 0.7rem;
  letter-spacing: 0.05rem;
}

.fields-row > label {
  flex: 1;
}

input {
  border: 1px solid rgba(0 0 0 / 0.2);
  border-radius: 0.25rem;

  padding: 0.45rem 0.5rem 0.25rem;

  font-size: 0.9rem;
}

input:focus,
input:focus-visible {
  box-shadow: var(--standard-box-shadow);

  outline: none;
  border: 1px solid var(--primary-color);
}

input:invalid {
  border: 1px solid rgba(255 0 0 / 0.5);
}

.form-section > h2,
.form-section .white-background-wrapper,
.form-section .form-footer {
  padding-inline: var(--inline-padding);
}

.submit-button {
  margin-bottom: var(--vertical-gap);

  background-color: var(--primary-color);
  color: var(--white);
  font-weight: 600;
  font-size: 0.9rem;

  padding: 0.85rem 2.5rem;

  border: none;
  border-radius: 0.5rem;
  box-shadow: var(--standard-box-shadow);

  cursor: pointer;
}

.login-instead {
  font-size: 0.8rem;
}

.login-instead > a {
  color: var(--primary-color);
  font-weight: 600;
}

@media only screen and (max-width: 1000px) {
  main {
    flex-direction: column;
  }

  .background-section {
    gap: 5rem;
  }
}

@media only screen and (max-width: 700px) {
  .form-section {
    --inline-padding: min(2rem, 10%);
  }
}

@media only screen and (max-width: 400px) {
  .form-section {
    --inline-padding: min(1.5rem, 5%);

    padding-block: calc(var(--inline-padding) + 0.5rem);
  }
}