_og.scss

//
// Global
//

:root {
  --blue: #0d6efd;
  --indigo: #6610f2;
  --purple: #6f42c1;
  --pink: #d63384;
  --red: #dc3545;
  --orange: #fd7e14;
  --yellow: #ffc107;
  --green: #198754;
  --teal: #20c997;
  --cyan: #0dcaf0;
  --white: #fff;
  --gray: #6c757d;
  --gray-dark: #343a40;

  --blue-300: #6ea8fe;
  --blue-700: #084298;

  --font: Inter, -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --font-heading: InterDisplay;

  --body-bg: #fff;
  --body-color: #212529;
  --secondary-color: #6c757d;
  --border-color: rgba(0, 0, 0, 0.1);
  --accent-bg: #f8f9fa;
  --link-color: var(--blue);
  --masthead-bg: var(--accent-bg);
  --gap: 2rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --body-bg: #212529;
    --body-color: #dee2e6;
    --accent-bg: #2a2f34;
    --link-color: var(--blue-300);
    --border-color: rgba(255, 255, 255, 0.1);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  font-family: var(--font);
  line-height: 1.5;
  scroll-behavior: smooth;

  @media screen and (prefers-reduced-motion: reduce) {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  color: var(--body-color);
  background-color: var(--body-bg);
}

a {
  color: var(--link-color);
  text-decoration: none;

  &:hover {
    text-decoration: underline;
  }

  code {
    color: inherit;
  }
}

h1,
h2,
h3,
h4 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-family: var(--font-heading), var(--font);
  font-weight: 600;
  line-height: 1;
}
h1 {
  font-size: 2.5rem;
}
h2 {
  font-size: 2rem;
}
h3 {
  font-size: 1.75rem;
}
h4 {
  font-size: 1.5rem;
}

p {
  margin-top: 0;
  margin-bottom: 1rem;
}

blockquote {
  position: relative;
  margin: 0 1rem 1rem;
  font-style: italic;
  color: #7a7a7a;

  p {
    margin-bottom: 0;
  }
}

ul {
  padding-left: 1.5em;
}

li {
  padding-inline-start: 1.5ch;
  margin-bottom: 0.25rem;
  list-style-type: '—';

  &::marker {
    color: var(--secondary-color);
  }
}

p:last-child,
ul:last-child,
blockquote:last-child {
  margin-bottom: 0;
}

//
// Code
//

code,
pre {
  font-family: 'SFMono-Regular', Menlo, 'Courier New', monospace;
  font-size: 95%;
}
code {
  font-size: 85%;
  color: var(--pink);
  border-radius: 0.2rem;
}

pre {
  display: block;
  margin: 0 0 1rem;
  line-height: 1.4;
  white-space: pre;
  white-space: pre-wrap;

  code {
    padding: 0;
    color: inherit;
    background-color: transparent;
    border: 0;
  }
}

.highlight {
  margin: 0;
  background-color: var(--accent-bg);

  pre {
    margin-bottom: 0;
    padding: var(--gap);
  }

  & + .highlight {
    margin-top: 1rem;
  }
}

//
// Masthead
//

.cg-icon {
  display: block;
  width: 128px;
  height: 128px;
  margin-left: -0.75rem;
  margin-bottom: 1.5rem;

  @media (min-width: 768px) {
    width: 192px;
    height: 192px;
    margin-left: -1.25rem;
  }
}

.cg-masthead {
  padding-top: 2rem;
  padding-bottom: 3rem;
  margin-bottom: 1.5rem;
  background-color: var(--masthead-bg);

  p {
    margin-bottom: 1rem;
  }

  @media (min-width: 960px) {
    padding-top: 3rem;
    padding-bottom: 4rem;
  }
}

.cg-masthead-title {
  margin-bottom: 1rem;
  font-size: 4rem;
  font-weight: 700;
  line-height: 0.9;
  color: inherit;

  @media (min-width: 768px) {
    font-size: 6rem;
  }
}

.cg-masthead-subtitle {
  max-width: 46rem;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
  line-height: 1.25;

  @media (min-width: 768px) {
    font-size: 2rem;
  }
}

//
// Content
//

.container {
  max-width: 80em;
  padding-right: 2rem;
  padding-left: 2rem;
  margin-right: auto;
  margin-left: auto;

  @media (min-width: 768px) {
    padding-right: 3rem;
    padding-left: 3rem;
  }
}

.content {
  display: flex;
  flex-direction: column;
  gap: var(--gap);

  h3 {
    scroll-margin-top: 24px;
  }

  @media (min-width: 768px) {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: calc(var(--gap) * 2) var(--gap);
    align-items: stretch;

    h2 {
      grid-column: auto / span 2;
    }

    .highlight {
      height: 100%;
    }
  }
}

//
// The Grid
//

@media (min-width: 768px) {
  .col,
  blockquote {
    grid-column: auto / span 1;
  }
}

//
// Sections
//

h2 {
  padding-top: 1rem;
  margin-top: 3rem;
  margin-bottom: 0;
  border-top: 0.25rem solid;
}

//
// Footer
//

.footer {
  grid-column: auto / span 2;
  padding-top: 3rem;
  padding-bottom: 3rem;
  margin-top: 5rem;
  border-top: 0.25rem solid;
}

.footer p {
  margin-bottom: 0.5rem;
}

.quick-links {
  display: flex;
  gap: 1.25rem;
  list-style: none;
  margin-left: 0;
  padding-left: 0;
}
.quick-links li {
  display: inline;
  padding-inline-start: 0;
}