:root {
  --paper: #f9f9f7;
  --ink: #20201e;
  --muted: #6b6a66;
  --rule: #e6e5e0;
  --accent: #3d6a5d;
  --accent-strong: #2f5145;
  --measure: 40rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #16171b;
    --ink: #e7e6e0;
    --muted: #9a9a92;
    --rule: #2a2b31;
    --accent: #82b5a5;
    --accent-strong: #a5cfc2;
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Georgia, "Iowan Old Style", "Palatino Linotype", "Source Serif Pro", serif;
  font-size: 18px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.wrap {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.site-head {
  padding: 2.75rem 0 1.75rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--rule);
}

.site-head .wrap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
}

.brand:hover {
  color: var(--accent-strong);
}

nav {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 0.9rem;
}

nav a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 1.1rem;
}

nav a:hover {
  color: var(--accent-strong);
}

/* Links in flowing text */
.content a {
  color: var(--accent);
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}

.content a:hover {
  color: var(--accent-strong);
}

/* Headings */
h1 {
  font-size: 1.95rem;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 0.4rem;
}

h2 {
  font-size: 1.3rem;
  line-height: 1.3;
  margin: 2.4rem 0 0.6rem;
}

p {
  margin: 0 0 1.25rem;
}

/* Post meta */
.meta {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 2rem;
}

/* Post listing on home */
.intro {
  margin-bottom: 3rem;
}

.intro p {
  color: var(--ink);
}

.post-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.post-list li {
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--rule);
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
}

.post-list li:first-child {
  border-top: 1px solid var(--rule);
}

.post-list time {
  flex: 0 0 5.5rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 0.82rem;
  color: var(--muted);
  padding-top: 0.18rem;
}

.post-list a {
  color: var(--ink);
  text-decoration: none;
  font-size: 1.12rem;
}

.post-list a:hover {
  color: var(--accent-strong);
}

/* Code */
code {
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.86em;
  background: color-mix(in srgb, var(--muted) 15%, transparent);
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

pre {
  background: color-mix(in srgb, var(--muted) 12%, transparent);
  border: 1px solid var(--rule);
  border-radius: 8px;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  font-size: 0.84rem;
  line-height: 1.55;
  margin: 0 0 1.5rem;
}

pre code {
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: inherit;
}

blockquote {
  margin: 0 0 1.5rem;
  padding-left: 1.1rem;
  border-left: 3px solid var(--rule);
  color: var(--muted);
  font-style: italic;
}

hr {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 2.5rem 0;
}

/* Back link */
.back {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 0.88rem;
  text-decoration: none;
  color: var(--muted);
  display: inline-block;
  margin-top: 2rem;
}

.back:hover {
  color: var(--accent-strong);
}

/* Footer */
.site-foot {
  margin-top: 4rem;
  padding: 1.75rem 0 3rem;
  border-top: 1px solid var(--rule);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 0.82rem;
  color: var(--muted);
}

.site-foot .wrap {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-foot a {
  color: var(--muted);
  text-decoration: none;
}

.site-foot a:hover {
  color: var(--accent-strong);
}

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

/* 404 */
.notfound {
  text-align: left;
  padding: 1rem 0 0;
}