:root {
  --font-heading: 'Oswald', sans-serif;
  --font-paragraph: 'Karla', sans-serif;
  --font-mono: 'Major Mono Display', monospace;
  --font-mono-readable: 'FiraMono', monospace;
  --primary-color: #fff;
  --secondary-color: #7d7d7d;
  --background-color: #000;
}

@font-face {
  font-family: 'Oswald';
  src: url('../static/fonts/Oswald.ttf') format('truetype');
  font-weight: 700;
  font-style: normal;
}

/* Paragraph */
@font-face {
  font-family: 'Karla';
  src: url('../static/fonts/Karla.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
}

/* Mono */
@font-face {
  font-family: 'Major Mono Display';
  src: url('../static/fonts/MajorMonoDisplay.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
}

@font-face {
  font-family: 'FiraMono';
  src: url('../static/fonts/FiraMono.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
}

html, body {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  background: var(--background-color);
  color: var(--primary-color);
  font-family: var(--font-paragraph);
  font-size: 12pt;
  line-height: 1.6;
  min-height: 160vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--primary-color);
  margin: 0;
  padding: 0;
}

h1 {
  font-size: 3.6rem;
  margin-bottom: .8rem;
}

h2 {
  font-size: 2.5rem;
  margin-bottom: .6rem;
}

h3 {
  font-size: 1.8rem;
  margin-bottom: .5rem;
}

h4 {
  font-size: 1.5rem;
  margin-bottom: .4rem;
}

h5 {
  font-size: 1.2rem;
  margin-bottom: .3rem;
}

p {
  font-size: 1rem;
  font-family: var(--font-paragraph);
  margin: 0 0 1em 0;
  padding: 0;
}

p:first-of-type {
  font-size: 1.2rem;
  font-weight: 700;
}

em {
  font-family: var(--font-mono);
  font-style: normal;
}

pre {
  font-family: var(--font-mono-readable);
  background: #111;
  padding: 1em;
  overflow-x: auto;
}

section.container {
  width: 100%;

    margin: 0 auto;
    padding: 2rem;
}

@media screen and (min-width: 640px) {
  section.container {
    max-width: 640px;
  }
}

@media screen and (min-width: 800px) {
  section.container {
    max-width: 800px;
  }
}

a {
  color: var(--primary-color);
  text-decoration: underline;
}

a:hover {
  color: var(--secondary-color);
  text-decoration: none;
}

a:visited {
  color: var(--secondary-color);
}

img.cover-image {
  width: 100%;
  max-width: 100%;
  height: auto;
  margin-bottom: 4rem;
  border-radius: .2rem;
}

section.intro {
  margin-bottom: 4rem;
}

div.pack {
  margin-bottom: 12rem;
}

div.links {
  margin-bottom: 3rem;
}

footer {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

footer .copyright {
  font-size: .8rem;
  color: var(--secondary-color);
}

footer a {
  font-size: .8rem;
  display: inline-block;
}