*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #ffffff;
  --text: #111827;
  --text-muted: #64748b;
  --accent: #0ea5e9;
  --border: #111827;
  --link: #0ea5e9;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #18181b;
    --text: #ffffff;
    --text-muted: #94a3b8;
    --accent: #0ea5e9;
    --border: #ffffff;
    --link: #0ea5e9;
  }
}

body {
  font-family: system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 1.125rem;
}

.site {
  display: flex;
  flex-direction: column;
  gap: 3rem;
  max-width: 80ch;
  margin: 1.25rem auto;
  padding: 0 2ch;
}

/* Nav */

nav {
  display: flex;
  align-items: center;
  gap: 3rem;
}

nav a {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
}

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

.social-links {
  display: flex;
  gap: 1.25rem;
  margin-left: auto;
}

.social-links img {
  width: 32px;
  height: 32px;
}

/* Main */

main img,
main video {
  max-width: 100%;
  height: auto;
}

main ul,
main ol {
  padding-left: 2rem;
}

main a {
  color: var(--link);
}

main p {
  margin-bottom: 1rem;
}

/* Home */

main strong {
  color: var(--accent);
}

/* Code blocks */

pre {
  padding: 1rem;
  border-radius: 6px;
  overflow-x: auto;
  margin-bottom: 1rem;
  font-size: 0.9rem;
  line-height: 1.5;
}

code {
  font-family: ui-monospace, "SFMono-Regular", "SF Mono", Menlo, Consolas, monospace;
}

:not(pre) > code {
  padding: 0.15em 0.35em;
  border-radius: 3px;
  background: #f1f5f9;
  font-size: 0.9em;
}

@media (prefers-color-scheme: dark) {
  :not(pre) > code {
    background: #334155;
  }
}

/* Side-by-side images */

.side-by-side {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
}

.side-by-side figure {
  flex: 1;
  text-align: center;
}

.side-by-side figcaption {
  margin-top: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

@media (max-width: 640px) {
  .side-by-side {
    flex-direction: column;
  }
}

/* Article header */

article header {
  margin-bottom: 2rem;
}

article header h1 {
  margin-bottom: 0.25rem;
}

article header .subtitle {
  font-size: 1.25rem;
  font-weight: normal;
  margin-bottom: 0.25rem;
}

article header .date {
  font-size: 1.125rem;
  font-weight: normal;
  color: var(--text-muted);
}

/* Footer */

footer {
  border-top: 1px solid var(--border);
  padding: 0.5rem;
}

/* Blog index */

.blog-list {
  list-style: none;
}

.blog-list .year {
  font-size: 1.875rem;
  margin: 1.25rem 0;
}

.blog-list ul {
  list-style: none;
}

.blog-list a {
  text-decoration: none;
  color: inherit;
  display: block;
  border: 2px solid var(--border);
  padding: 1rem;
  margin: 0.5rem 0;
}

.blog-list a:hover {
  border-color: var(--accent);
}

.blog-list h3 {
  margin: 0;
  font-size: 1.25rem;
}

.blog-list .subtitle {
  font-weight: normal;
  font-size: 1rem;
  margin: 0.25rem 0;
}

.blog-list .date {
  font-weight: 300;
  font-size: 0.875rem;
  color: var(--text-muted);
}