/* Palette taken from the Hickory DNS logo:
 * green #259575 ("DNS"), light green #37c098, deep green #032318, mauve #b8afb3. */
:root {
  color-scheme: light dark;
  --bg: #fbfcfb;
  --surface: #eff5f2;
  --border: #d3e0da;
  --text: #111a16;
  --muted: #47544f;
  --link: #1b7a5e;
  --brand: #259575;
  --brand-light: #37c098;
  --brand-deep: #032318;
  --mauve: #b8afb3;
  --on-brand: #ffffff;
  --button: #1b7a5e;
  --focus: #1b7a5e;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c1411;
    --surface: #13201b;
    --border: #25382f;
    --text: #e6ede9;
    --muted: #a5b4ad;
    --link: #4fcfa4;
    --on-brand: #04140e;
    --button: #37c098;
    --focus: #4fcfa4;
  }
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-text-size-adjust: 100%;
}

a {
  color: var(--link);
  text-underline-offset: 0.15em;
}

a:hover {
  text-decoration-thickness: 2px;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
  border-radius: 2px;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.9em;
}

h1,
h2,
h3 {
  line-height: 1.2;
  text-wrap: balance;
}

.wrap {
  max-width: 70rem;
  margin: 0 auto;
  padding: 0 1rem;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  padding: 0.5rem 1rem;
  background: var(--bg);
  z-index: 1;
}

.skip-link:focus {
  top: 1rem;
}

/* Header */

.site-header {
  /* The bar echoes the gradient of the logo mark. */
  border-top: 4px solid;
  border-image: linear-gradient(90deg, var(--brand-light), var(--brand), var(--brand-deep), var(--mauve)) 1;
  border-bottom: 1px solid var(--border);
}

.site-header .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding-block: 0.75rem;
}

.brand {
  display: block;
}

.brand img {
  display: block;
  height: 3rem;
  width: auto;
}

nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-header nav a {
  font-weight: 600;
  text-decoration: none;
}

.site-header nav a:hover {
  text-decoration: underline;
}

/* Sections */

main section {
  padding-block: 3rem;
}

main section + section {
  border-top: 1px solid var(--border);
}

.hero {
  padding-block: 4rem 3.5rem;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.25rem, 6vw, 3.5rem);
  letter-spacing: -0.02em;
}

.lede {
  max-width: 44rem;
  margin: 0;
  color: var(--muted);
  font-size: 1.25rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 2rem 0 0;
  padding: 0;
  list-style: none;
}

.button {
  display: inline-block;
  padding: 0.65rem 1.25rem;
  border: 2px solid var(--button);
  border-radius: 0.4rem;
  font-weight: 600;
  text-decoration: none;
}

.actions li:first-child .button {
  background: var(--button);
  color: var(--on-brand);
}

.button:hover {
  text-decoration: underline;
}

h2 {
  margin: 0 0 0.75rem;
  font-size: 1.875rem;
}

.intro {
  max-width: 44rem;
  margin: 0 0 2rem;
  color: var(--muted);
}

.highlights h2 {
  margin-bottom: 2rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 19rem), 1fr));
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.grid li {
  padding: 1.25rem 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
}

.grid h3 {
  margin: 0 0 0.5rem;
  font-size: 1.125rem;
}

.grid p {
  margin: 0;
}

.grid p + p {
  margin-top: 0.5rem;
}

.note {
  max-width: 44rem;
  margin: 2rem 0 0;
  color: var(--muted);
}

.crate {
  color: var(--muted);
  font-size: 0.9375rem;
}

.badge {
  display: inline-block;
  margin-left: 0.25rem;
  padding: 0 0.5rem;
  border: 1px solid var(--muted);
  border-radius: 1rem;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  vertical-align: 0.15em;
}

/* Documentation pages */

.doc {
  padding-block: 3rem 4rem;
}

.doc-header,
.prose {
  max-width: 48rem;
}

.doc h1 {
  margin: 0 0 1.25rem;
  font-size: clamp(2rem, 5vw, 2.75rem);
  letter-spacing: -0.02em;
}

.notice {
  margin: 0 0 2rem;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--brand);
  border-radius: 0.4rem;
}

.toc {
  margin: 0 0 2.5rem;
}

.toc h2 {
  margin: 0 0 0.5rem;
  color: var(--muted);
  font-size: 0.875rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.toc ol {
  margin: 0;
  padding-left: 1.25rem;
}

.prose h2 {
  margin: 3rem 0 0.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 1.625rem;
}

.prose h3 {
  margin: 2rem 0 0.5rem;
  font-size: 1.1875rem;
}

.prose h2,
.prose h3 {
  scroll-margin-top: 1rem;
}

.prose p,
.prose ul,
.prose ol {
  margin: 0 0 1rem;
}

.prose :not(pre) > code {
  padding: 0.1em 0.3em;
  background: var(--surface);
  border-radius: 0.25rem;
  overflow-wrap: anywhere;
}

.prose pre {
  margin: 0 0 1.5rem;
  padding: 1rem 1.25rem;
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  font-size: 0.9375rem;
  line-height: 1.5;
}

.prose table {
  display: block;
  max-width: 100%;
  margin: 0 0 1.5rem;
  overflow-x: auto;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.prose th,
.prose td {
  padding: 0.4rem 1rem 0.4rem 0;
  border-bottom: 1px solid var(--border);
  text-align: left;
  vertical-align: top;
}

.prose th {
  font-weight: 600;
}

/* Footer */

.site-footer {
  padding-block: 2rem 3rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9375rem;
}

.site-footer p {
  margin: 1rem 0 0;
}

@media print {
  .skip-link,
  .actions {
    display: none;
  }
}