/* O'Reilly technical documentation style */
:root {
  --bg: #fff;
  --text: #333;
  --muted: #666;
  --border: #ddd;
  --link: #0066cc;
  --link-hover: #004499;
  --code-bg: #f5f5f5;
  --header-bg: #1a1a2e;
  --header-text: #fff;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1a1a;
    --text: #e0e0e0;
    --muted: #999;
    --border: #333;
    --link: #66b3ff;
    --link-hover: #99ccff;
    --code-bg: #2a2a2a;
    --header-bg: #0f0f23;
  }
}

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

body {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

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

a:hover {
  color: var(--link-hover);
  text-decoration: underline;
}

/* Header */
header {
  background: var(--header-bg);
  color: var(--header-text);
  padding: 2rem;
  border-bottom: 1px solid var(--border);
}

header h1 {
  font-size: 1.5rem;
  font-weight: normal;
  letter-spacing: -0.02em;
}

header p {
  margin-top: 0.5rem;
  opacity: 0.7;
  font-size: 0.875rem;
}

/* Navigation */
nav {
  background: var(--code-bg);
  padding: 0.75rem 2rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.875rem;
}

nav a {
  margin-right: 1.5rem;
  color: var(--text);
}

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

/* Main content */
main {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem;
}

main h2 {
  font-size: 1.25rem;
  font-weight: normal;
  margin-top: 2rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

main h3 {
  font-size: 1rem;
  font-weight: normal;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

main p {
  margin-bottom: 1rem;
}

main ul {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

main li {
  margin-bottom: 0.5rem;
}

/* Article list */
.article-list {
  list-style: none;
  margin-left: 0;
}

.article-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border);
}

.article-list li:last-child {
  border-bottom: none;
}

.article-list .date {
  font-size: 0.75rem;
  color: var(--muted);
  display: block;
}

.article-list .title {
  font-weight: normal;
}

/* Code blocks */
code, pre {
  font-family: "SF Mono", Monaco, Consolas, monospace;
  font-size: 0.875rem;
  background: var(--code-bg);
}

code {
  padding: 0.125rem 0.375rem;
  border-radius: 2px;
}

pre {
  padding: 1rem;
  overflow-x: auto;
  border: 1px solid var(--border);
  margin: 1rem 0;
}

/* Footer */
footer {
  max-width: 720px;
  margin: 2rem auto;
  padding: 1rem 2rem;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--muted);
}

footer a {
  color: var(--muted);
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0;
  font-size: 0.875rem;
}

th, td {
  padding: 0.5rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  font-weight: normal;
  color: var(--muted);
}