/* Clarion Street — editorial serif theme
   System fonts only (licensing-clean): Georgia/serif for headings,
   system-ui for body, ui-monospace for code. No webfonts, no JS,
   no CDN assets, no frameworks. */

:root {
  /* palette */
  --ink: #1b1917;        /* warm near-black */
  --ink-soft: #3a3733;
  --bg: #ffffff;
  --muted: #6b6660;      /* warm gray */
  --faint: #e7e2da;      /* hairlines / borders */
  --accent: #1f4e79;     /* muted navy */
  --accent-dark: #153a5c;
  --accent-soft: #eef3f7;
  --code-bg: #f6f4f0;
  --code-ink: #2d2a26;

  /* fonts */
  --serif: Georgia, "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;

  /* layout */
  --measure: 46rem;
  --gutter: 1.5rem;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--accent-soft);
  color: var(--accent-dark);
}

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

.container {
  max-width: var(--measure);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--faint);
}
.header-inner {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  padding-top: 1.4rem;
  padding-bottom: 1.4rem;
}
.site-title {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  color: var(--ink);
  text-decoration: none;
}
.site-nav { display: flex; gap: 1.75rem; }
.site-nav a {
  font-size: 0.95rem;
  color: var(--muted);
  text-decoration: none;
  letter-spacing: 0.01em;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
}
.site-nav a:hover { color: var(--ink); }
.site-nav a.active {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

/* ---------- Hero (home) ---------- */
.hero {
  padding: 4.5rem 0 2.5rem;
}
.hero h1 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.2rem, 6vw, 3.25rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
}
.hero h1::after {
  content: "";
  display: block;
  width: 3rem;
  height: 3px;
  margin-top: 1.5rem;
  background: var(--accent);
}

/* ---------- Section heading (home list label) ---------- */
.section-heading {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.35rem;
  letter-spacing: 0.005em;
  margin: 0 0 1.5rem;
}

/* ---------- Page header (blog index) ---------- */
.page-header {
  padding: 3.5rem 0 0.25rem;
}
.page-header h1 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2rem, 5vw, 2.75rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

/* ---------- Post list ---------- */
.post-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--faint);
}
.post-item {
  padding: 1.7rem 0 1.8rem;
  border-bottom: 1px solid var(--faint);
}
.post-date {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.45rem;
}
.post-link {
  display: inline-block;
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 400;
  line-height: 1.25;
  color: var(--ink);
  text-decoration: none;
}
.post-link:hover { color: var(--accent); }
.post-desc {
  margin: 0.5rem 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.6;
  max-width: 38rem;
}

/* ---------- Article (single) ---------- */
.post {
  padding: 3rem 0 1rem;
}
.post-header { margin-bottom: 2.5rem; }
.post-header h1 {
  margin: 0 0 0.75rem;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(1.9rem, 4.5vw, 2.6rem);
  line-height: 1.16;
  letter-spacing: -0.012em;
}
.post-meta {
  color: var(--muted);
  font-size: 0.95rem;
}
.post-meta .dot {
  margin: 0 0.5rem;
  color: var(--faint);
}

/* ---------- Article content ---------- */
.content h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.55rem;
  line-height: 1.25;
  letter-spacing: -0.005em;
  margin: 2.75rem 0 0.9rem;
}
.content h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.25rem;
  margin: 2rem 0 0.7rem;
}
.content p { margin: 0 0 1.3rem; }
.content a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: rgba(31, 78, 121, 0.35);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.content a:hover {
  color: var(--accent-dark);
  text-decoration-color: var(--accent-dark);
}
.content ul,
.content ol {
  margin: 0 0 1.3rem;
  padding-left: 1.5rem;
}
.content li { margin: 0.4rem 0; }
.content li::marker { color: var(--accent); }
.content strong { font-weight: 600; color: var(--ink); }
.content blockquote {
  margin: 1.75rem 0;
  padding: 0.25rem 0 0.25rem 1.5rem;
  border-left: 3px solid var(--accent);
  color: var(--ink-soft);
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.1rem;
}
.content blockquote p { margin: 0; }
.content code {
  font-family: var(--mono);
  font-size: 0.85em;
}
.content :not(pre) > code {
  background: var(--code-bg);
  color: var(--code-ink);
  padding: 0.15em 0.4em;
  border-radius: 4px;
}
.content pre {
  background: var(--code-bg);
  border: 1px solid var(--faint);
  border-radius: 8px;
  padding: 1.1rem 1.25rem;
  overflow-x: auto;
  line-height: 1.6;
  font-size: 0.88rem;
  margin: 1.75rem 0;
}
.content pre code {
  background: none;
  padding: 0;
  color: var(--code-ink);
}
.content img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}
.content hr {
  border: 0;
  border-top: 1px solid var(--faint);
  margin: 2.5rem 0;
}

/* ---------- Tags (end of post) ---------- */
.post-tags {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--faint);
  font-size: 0.9rem;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem;
}
.tags-label {
  font-family: var(--serif);
  font-style: italic;
  margin-right: 0.25rem;
}
.tag {
  display: inline-block;
  background: var(--code-bg);
  border: 1px solid var(--faint);
  border-radius: 999px;
  padding: 0.2rem 0.75rem;
  font-size: 0.82rem;
  color: var(--ink-soft);
  text-decoration: none;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.tag:hover {
  border-color: var(--accent);
  color: var(--accent-dark);
}
.tag-count {
  margin-left: 0.35rem;
  font-size: 0.75rem;
  color: var(--muted);
}

/* Tag index page (/tags/) */
.tag-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.tag-list li { display: inline-flex; align-items: baseline; }

/* Taxonomy term page (/tags/<tag>/) */
.page-eyebrow {
  font-family: var(--serif);
  font-style: italic;
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0 0 0.5rem;
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--faint);
  margin-top: 5rem;
  padding: 2rem 0 3rem;
  color: var(--muted);
  font-size: 0.9rem;
}
.site-footer p { margin: 0; }

.muted { color: var(--muted); }

/* ---------- Responsive ---------- */
@media (max-width: 640px) {
  body { font-size: 16px; }
  .hero { padding: 3rem 0 2rem; }
  .header-inner { padding-top: 1.1rem; padding-bottom: 1.1rem; }
  .site-nav { gap: 1.25rem; }
  .post-link { font-size: 1.2rem; }
}