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

/* ── Colour tokens ────────────────────────────── */
:root {
  --bg:        #ffffff;
  --fg:        #1a1a1a;
  --muted:     #6b7280;
  --accent:    #2563eb;
  --border:    #e5e7eb;
  --code-bg:   #f3f4f6;
  --max-width: 680px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:      #111111;
    --fg:      #e5e5e5;
    --muted:   #9ca3af;
    --accent:  #60a5fa;
    --border:  #2d2d2d;
    --code-bg: #1e1e1e;
  }
}

/* ── Typography ───────────────────────────────── */
html {
  font-size: 18px;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: Georgia, "Times New Roman", serif;
  line-height: 1.7;
  padding: 2rem 1.25rem;
}

/* ── Layout ───────────────────────────────────── */
.site-wrap {
  max-width: var(--max-width);
  margin: 0 auto;
}

/* ── Header ───────────────────────────────────── */
.site-header {
  margin-bottom: 3rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.site-title {
  font-size: 1.1rem;
  font-weight: bold;
  letter-spacing: 0.02em;
  text-decoration: none;
  color: var(--fg);
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-family: system-ui, sans-serif;
  margin-left: 1.25rem;
}

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

/* ── Footer ───────────────────────────────────── */
.site-footer {
  margin-top: 4rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.8rem;
  font-family: system-ui, sans-serif;
}

/* ── Post list ────────────────────────────────── */
.post-list {
  list-style: none;
}

.post-list li {
  margin-bottom: 1.5rem;
  display: flex;
  align-items: baseline;
  gap: 1rem;
}

.post-list time {
  color: var(--muted);
  font-size: 0.85rem;
  font-family: system-ui, sans-serif;
  white-space: nowrap;
  flex-shrink: 0;
}

.post-list a {
  color: var(--fg);
  text-decoration: none;
}

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

/* ── Article ──────────────────────────────────── */
article h1 {
  font-size: 1.75rem;
  line-height: 1.25;
  margin-bottom: 0.4rem;
}

.post-meta {
  color: var(--muted);
  font-size: 0.85rem;
  font-family: system-ui, sans-serif;
  margin-bottom: 2rem;
}

article h2 { font-size: 1.3rem; margin: 2rem 0 0.75rem; }
article h3 { font-size: 1.1rem; margin: 1.75rem 0 0.5rem; }

article p  { margin-bottom: 1.25rem; }

article a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

article ul,
article ol {
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
}

article li { margin-bottom: 0.25rem; }

article blockquote {
  border-left: 3px solid var(--border);
  padding-left: 1rem;
  color: var(--muted);
  margin: 1.5rem 0;
}

article code {
  background: var(--code-bg);
  padding: 0.1em 0.35em;
  border-radius: 3px;
  font-size: 0.875em;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

article pre {
  background: var(--code-bg);
  padding: 1rem;
  border-radius: 4px;
  overflow-x: auto;
  margin-bottom: 1.25rem;
}

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

article hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* ── Page heading ─────────────────────────────── */
.page-heading {
  font-size: 1.1rem;
  color: var(--muted);
  font-family: system-ui, sans-serif;
  font-weight: normal;
  margin-bottom: 2rem;
}