:root {
  --spacer: 16px;
  --border-curve: calc(var(--spacer) * 2);
  --background: #000000;
  --foreground: #ffffff;
  --on-foreground: #000000;
  --max-width: 900px;
}

a {
  color: var(--on-foreground);
}

h1 {
  font-size: 200%;
  @media screen and (min-width: 1280px) {
    font-size: 250%;
  }
}

h1:first-of-type {
  margin-top: 1rem;
}

h2 {
  margin-top: 2rem;
  font-size: 150%;

  @media screen and (min-width: 1280px) {
    font-size: 175%;
  }
}

h3 {
  margin-top: 2rem;
  margin-bottom: 0;
  font-size: 95%;

  @media screen and (min-width: 1280px) {
    font-size: 105%;
  }
}

body {
  min-width: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  min-height: 100vh;
  background-color: var(--background);
  font-family: 'Raleway', sans-serif;
  padding: var(--spacer);
  box-sizing: border-box;

  @media (max-width: 900px) {
    padding: 0;
    margin: 0;
  }
}

header {
  transition: opacity 200ms cubic-bezier(0.6, -0.28, 0.735, 0.045);
  width: 100%;
  height: 500px;
  background: var(--foreground) url('resources/promo.jpg') right center no-repeat;
  background-size: cover;
  border-top-left-radius: var(--border-curve);
  border-top-right-radius: var(--border-curve);
  opacity: 0;

  @media (max-width: 900px) {
    height: 400px;
    border-radius: 0;
  }
}

header.show {
  opacity: 1;
}

.home-link {
  position: fixed;
  top: var(--spacer);
  left: var(--spacer);
  background-color: var(--foreground);
  color: var(--on-foreground);
  border-radius: var(--border-curve);

  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  box-sizing: border-box;
  border: 2px solid var(--background);
  text-decoration: none;
  line-height: 0;
  padding: 0.75rem;

  @media (max-width: 800px) {
    padding: 0.3rem;
  }
}

.home-link > figure {
  display: block;
  width: 1.25rem;
  height: 1.25rem;
  background: url('exit.svg') center center no-repeat;
  background-size: contain;
  padding: 0;
  margin: 0;

  @media (max-width: 800px) {
    width: 0.625rem;
    height: 0.625rem;
  }
}

.layout {
  border-radius: var(--border-curve);
  width: 100%;
  max-width: 750px;
  background-color: var(--foreground);
  color: var(--on-foreground);
  box-sizing: border-box;

  @media (max-width: 900px) {
    border-radius: 0;
  }
}

.content {
  padding: calc(var(--spacer) * 1) calc(var(--spacer) * 2);
  display: block;
  margin: auto;
  line-height: 1.5;
  text-rendering: geometricPrecision;

  @media (max-width: 900px) {
    padding: calc(var(--spacer) * 1.5) calc(var(--spacer) * 3.5);
    padding-right: calc(var(--spacer) * 1.5);
  }
}

p {
  font-weight: 500;
}

p,
li {
  font-size: 14px;
  @media (max-width: 900px) {
    font-size: 11px;
  }

  @media screen and (min-width: 1280px) {
    font-size: 16px;
  }
}

p,
h1,
h3 {
  margin-top: 0;
}

.bold {
  font-weight: 600;
}