/* ---------- variables ---------- */

:root {
  --color-bg: #fbfaf6;
  --color-text: #1a1a1a;
  --color-muted: #5a5a5a;
  --color-accent: #1c3d6e;
  --color-accent-hover: #2d5a9c;
  --color-rule: #d8d4c8;

  --font-serif: "Charter", "Bitstream Charter", "Sitka Text", Cambria, Georgia, serif;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --measure: 36rem;
}

/* ---------- reset ---------- */

*, *::before, *::after { box-sizing: border-box; }
html { font-size: 18px; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-serif);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  margin: 0;
  padding: 0;
  font-feature-settings: "kern", "liga", "onum";
}

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

/* ---------- header / footer ---------- */

.site-header {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2rem 1.5rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid var(--color-rule);
}

.site-name {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-text);
  text-decoration: none;
}

.site-nav a {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  margin-left: 1.5rem;
  color: var(--color-muted);
  text-decoration: none;
}

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

.content {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

.site-footer {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2rem 1.5rem;
  border-top: 1px solid var(--color-rule);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--color-muted);
  text-align: center;
}

.site-footer a { color: inherit; }

/* ---------- home / hero ---------- */

.hero {
  text-align: center;
  padding: 2rem 0 3rem;
}

.hero h1 {
  font-family: var(--font-sans);
  font-size: 2rem;
  font-weight: 500;
  margin: 0 0 0.75rem;
  letter-spacing: -0.01em;
}

.hero .tagline {
  font-style: italic;
  color: var(--color-muted);
  max-width: 32rem;
  margin: 0 auto;
  line-height: 1.5;
}

.writing-list { padding: 1.5rem 0; }

.writing-list h2 {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-muted);
  margin: 0 0 0.75rem;
}

.writing-list ul { list-style: none; padding: 0; margin: 0; }

.writing-list li {
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-rule);
}

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

.writing-list a {
  font-size: 1.15rem;
  color: var(--color-text);
  text-decoration: none;
}

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

.writing-list .subtitle {
  color: var(--color-muted);
  font-size: 0.95rem;
}

.writing-list time {
  display: block;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  color: var(--color-muted);
  margin-top: 0.3rem;
  letter-spacing: 0.02em;
}

/* ---------- post ---------- */

.post-header { margin-bottom: 2.5rem; }

.post-title {
  font-family: var(--font-serif);
  font-size: 2.05rem;
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 0.5rem;
  letter-spacing: -0.005em;
}

.post-subtitle {
  font-style: italic;
  color: var(--color-muted);
  margin: 0 0 1rem;
  font-size: 1.1rem;
  line-height: 1.4;
}

.post-meta {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--color-muted);
  margin: 0;
}

.post-meta a {
  color: var(--color-accent);
  text-decoration: none;
}

.post-meta a:hover { text-decoration: underline; }

.post-content h2 {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 600;
  margin: 3rem 0 1rem;
  line-height: 1.25;
}

.post-content h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  margin: 2rem 0 0.75rem;
}

.post-content p { margin: 0 0 1.2em; }

.post-content a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

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

.post-content blockquote {
  margin: 1.5em 0;
  padding: 0 0 0 1.5em;
  border-left: 3px solid var(--color-rule);
  color: var(--color-muted);
  font-style: italic;
}

.post-content code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: rgba(0, 0, 0, 0.05);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

.post-content pre {
  font-family: var(--font-mono);
  font-size: 0.85em;
  background: rgba(0, 0, 0, 0.04);
  padding: 1em 1.2em;
  border-radius: 4px;
  overflow-x: auto;
  line-height: 1.5;
  margin: 1.4em 0;
}

.post-content pre code {
  background: none;
  padding: 0;
  font-size: inherit;
}

.post-content em { font-style: italic; }
.post-content strong { font-weight: 600; }

.post-content hr {
  border: none;
  border-top: 1px solid var(--color-rule);
  margin: 2.5em auto;
  max-width: 8rem;
}

.post-content ul, .post-content ol { padding-left: 1.4em; margin: 0 0 1.2em; }
.post-content li { margin: 0.3em 0; }

/* ---------- about / generic page ---------- */

.content > h1 {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  font-weight: 600;
  margin: 0 0 1.5rem;
}

.content > h2 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 600;
  margin: 2.5rem 0 0.75rem;
}

.content > p { margin: 0 0 1.2em; }

.content > p > a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

/* ---------- mobile ---------- */

@media (max-width: 600px) {
  html { font-size: 17px; }

  .site-header {
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1.5rem 1rem 0.75rem;
  }

  .site-nav a:first-child { margin-left: 0; }
  .site-nav a { margin: 0 0.6rem; }

  .content { padding: 1.5rem 1rem 3rem; }

  .post-title { font-size: 1.7rem; }
  .hero h1 { font-size: 1.65rem; }
}