:root {
  --roost-gray: rgb(187, 193, 190);
  --roost-charcoal: hsl(80, 22%, 13%);
  --roost-yellow: rgb(238, 238, 0);
  --roost-peach: rgb(247, 187, 128);
  --roost-muddy: rgb(229, 217, 136);

  --bg: white;
  --fg: var(--roost-charcoal);
  --font-display: "Funnel Display", Inter, sans-serif;
  --font-sans: "Funnel Sans", Inter, sans-serif;
  --font-mono: "Space Mono", "JetBrains Mono", monospace;
  --max-width: 1000px;

  background-color: var(--bg);
  color: var(--fg);
  color-scheme: light dark;
  font-family: var(--font-sans);
  font-optical-sizing: auto;
  font-style: normal;
  scroll-behavior: smooth;
  text-wrap: pretty;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: color-mix(var(--roost-charcoal) 90%, black);
    --fg: rgba(255, 255, 255, 0.9);
  }
}

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

html, body {
  margin: 0;
}

@media (min-width: 300px) {
  :root {
    font-size: 15px;
  }
}

@media (min-width: 500px) {
  :root {
    font-size: 18px;
  }
}

@media (min-width: 900px) {
  :root {
    font-size: 20px;
  }
}

header {
  background-color: var(--roost-charcoal);
  box-shadow: 0 0.25em 1em rgba(0 0 0 / 0.25);
  color: white;
  padding-block: 0.5rem;
  position: sticky;
  top: 0;
  z-index: 1;
}

header nav {
  display: flow-root;
  font-size: 0.9rem;
  margin-inline: auto;
  max-width: var(--max-width);
  padding-inline: 1rem;
  text-align: justify;
  text-align-last: justify;
}

header nav a {
  color: inherit;
  font-family: var(--font-display);
  padding-block: 0.5rem;
  text-decoration: none;
}

header nav a:hover,
header nav a:focus {
  text-decoration: underline;
}

header .brand {
  align-items: center;
  column-gap: 1.25em;
  display: inline-flex;
  margin-inline-end: 1.25em;
}

header .roost-mark {
  display: flex;
  padding-block: 0;
}

header .roost-mark svg {
  height: 2em;
  color: var(--roost-yellow);
}

header .site-title {
  border-inline-start: 1px solid color-mix(var(--roost-gray) 25%, transparent);
  align-self: baseline;
  font-weight: bold;
  padding-inline-start: 1.25em;
}

header .button {
  float: inline-end;
  margin-inline-start: 1.25em;
}

header .navigation {
  display: inline-flex;
}

header .navigation a {
  display: block;
}

.navigation {
  column-gap: 1.25em;
  display: flex;
  font-size: 0.9em;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}

.navigation li {
  line-height: inherit;
}

.navigation a[aria-current="page"] {
  color: var(--roost-yellow);
}

main {
  margin-inline: auto;
  max-width: var(--max-width);
  padding-inline: 1rem;
  padding-block-end: 4rem;
}

footer {
  background-color: var(--roost-charcoal);
  color: white;
  font-size: 0.8rem;
}

footer nav {
  border-block-end: 1px solid rgba(255 255 255 / 0.1);
  font-family: var(--font-display);
  font-weight: bold;
  margin-inline: auto;
  max-width: var(--max-width);
  padding-block: 2rem;
  padding-inline: 1rem;
}

footer nav a {
  color: inherit;
  text-decoration: none;
}

footer nav a:hover,
footer nav a:focus {
  text-decoration: underline;
}

footer p {
  margin-block: 0;
  margin-inline: auto;
  max-width: var(--max-width);
  opacity: 0.8;
  padding-block: 2rem;
  padding-inline: 1rem;
}

footer img {
  background-color: light-dark(
    var(--roost-gray),
    color-mix(var(--roost-gray) 50%, transparent)
  );
  display: block;
  padding: 1.5rem;
}

img {
  max-width: 100%;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  margin-block: 1.5em 0;
  text-wrap: balance;
}

h1 {
  font-size: 3rem;
  font-weight: 800;
}

h1 + p {
  font-size: 1.2em;
  line-height: 1.33;
  text-wrap: balance;
}

h2 {
  font-size: 2rem;
  font-weight: 700;
}

h3 {
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: -0.05rem;
  text-transform: uppercase;
}

h4 {
  font-size: 1.5rem;
  font-weight: 800;
}

h5 {
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: -0.03rem;
  text-transform: uppercase;
}

h6 {
  font-size: 1rem;
  font-weight: 700;
}

p, li {
  line-height: 1.5rem;
}

p {
  margin-block: 1.25em;
}

code, pre {
  background-color: light-dark(
    color-mix(var(--roost-gray) 15%, transparent),
    color-mix(var(--roost-gray) 10%, transparent)
  );
  border-radius: 0.25em;
  font-family: var(--font-mono);
}

code {
  font-size: 0.85em;
  padding: 0.1em 0.3em;
}

pre {
  overflow-x: auto;
  padding: 1em;
}

pre code {
  background: none;
  padding: 0;
}

blockquote {
  border-inline-start: 4px solid var(--roost-yellow);
  margin-inline: 0;
  opacity: 0.85;
  padding-inline-start: 1em;
  font-style: italic;
  font-family: var(--font-mono);
}

table {
  border-collapse: collapse;
  display: block;
  max-width: 100%;
  overflow-x: auto;
}

th, td {
  border-block-end: 1px solid color-mix(var(--roost-gray) 50%, transparent);
  padding: 0.5em 1em;
}

.button {
  background-image: linear-gradient(
    135deg,
    var(--roost-yellow),
    var(--roost-muddy),
    var(--roost-peach)
  );
  background-position: center;
  background-size: 175%;
  border-radius: 0.25em;
  color: var(--roost-charcoal);
  display: inline-block;
  font-weight: 600;
  padding: 0.5em 1em;
  text-decoration: none;
  transition:
    background-size 1s ease-in-out,
    box-shadow 200ms ease-in-out,
    color 200ms ease-in-out;
}

.button:hover,
.button:focus {
  background-size: 100%;
  color: color-mix(var(--roost-charcoal) 80%, transparent);
  text-decoration: none;
  box-shadow:
    -3px -3px 12px -3px var(--roost-yellow),
    3px 3px 12px -3px var(--roost-peach);
}