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

/* === Base === */
html {
  font-size: 16px;
  line-height: 1.6;
}

body {
  font-family: monospace;
  color: #18181B;
  background: #FAFAFA;
  max-width: 640px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* === Typography === */
h1 {
  font-size: 22px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  border-bottom: 2px solid #18181B;
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}

h2 {
  font-size: 18px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

h3 { font-size: 16px; margin-top: 1.5rem; margin-bottom: 0.5rem; }
p { margin-bottom: 1rem; }

/* === Links === */
a { color: #18181B; text-decoration: underline; }
a:visited { color: #3F3F46; }
a:hover { text-decoration: none; }

/* === Header / Nav === */
.site-nav {
  margin-bottom: 3rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.site-nav a { text-decoration: none; }
.site-nav a:hover { text-decoration: underline; }

/* === Secondary text === */
.secondary { color: #71717A; }

/* === Blog list === */
.post-list {
  list-style: none;
}

.post-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid #E4E4E7;
}

.post-list li:first-child {
  border-top: 1px solid #E4E4E7;
}

.post-date {
  color: #71717A;
  margin-right: 0.5rem;
}

/* === Article === */
.article-header { margin-bottom: 2rem; }

.article-meta {
  color: #71717A;
  margin-bottom: 1rem;
}

.article-content { margin-bottom: 3rem; }
.article-content h2 { margin-top: 3rem; }
.article-content h3 { margin-top: 2rem; }
.article-content p { margin-bottom: 1rem; }

.article-content ul,
.article-content ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}

.article-content li { margin-bottom: 0.3rem; }

/* === Code === */
code {
  font-family: monospace;
  background: #F4F4F5;
  border: 1px solid #E4E4E7;
  padding: 0.1rem 0.3rem;
  font-size: 0.9rem;
}

pre {
  background: #F4F4F5;
  border: 1px solid #E4E4E7;
  padding: 1rem;
  overflow-x: auto;
  margin-bottom: 1rem;
}

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

/* === Breadcrumbs === */
.breadcrumbs {
  color: #71717A;
  margin-bottom: 1.5rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.breadcrumbs a { color: #71717A; }

/* === Tags === */
.tags {
  margin-top: 2rem;
  margin-bottom: 2rem;
}

.tags a {
  margin-right: 0.75rem;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

/* === Prev/Next navigation === */
.post-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 2px solid #18181B;
}

.post-nav-item { text-decoration: none; }

.post-nav-label {
  display: block;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: #71717A;
  margin-bottom: 0.25rem;
}

.post-nav-next { text-align: right; }

/* === Callout blocks === */
.callout {
  border-left: 3px solid #71717A;
  padding: 0.5rem 1rem;
  margin-bottom: 1rem;
}

.callout-insight { border-left-color: #2d7d2d; }
.callout-warning { border-left-color: #d32f2f; }

/* === Footer === */
.site-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 2px solid #18181B;
  color: #71717A;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}