*, *::before, *::after {
  box-sizing: border-box;
}

:root {
  --text: #e8e6e1;
  --muted: #6b6b6b;
  --border: #2a2a2a;
  --bg: #141414;
  --code-bg: #1e1e1e;
  --accent: #c9a96e;
  --max: 660px;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

html {
  font-size: 16px;
}

body {
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
}

/* ─── Header ──────────────────────────────────────────────── */

header {
  padding: 2.25rem 1.5rem 1.75rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 3.5rem;
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.site-name {
  font-size: 0.9375rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--accent);
  letter-spacing: -0.01em;
}

nav a {
  font-size: 0.875rem;
  color: var(--muted);
  text-decoration: none;
  margin-left: 1.5rem;
  transition: color 0.15s;
}

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

/* ─── Main ─────────────────────────────────────────────────── */

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.5rem;
  min-height: calc(100vh - 220px);
}

/* ─── Post list ─────────────────────────────────────────────── */

.year-heading {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 2.75rem 0 0.75rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border);
}

.year-heading:first-child {
  margin-top: 0;
}

.post-row {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  padding: 0.3rem 0;
}

.post-row-date {
  font-size: 0.8rem;
  color: var(--muted);
  white-space: nowrap;
  flex-shrink: 0;
  width: 4.25rem;
}

.post-row-title a {
  font-size: 0.9375rem;
  text-decoration: none;
  color: var(--text);
}

.post-row-title a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ─── Post page ─────────────────────────────────────────────── */

.post-title {
  font-size: 1.65rem;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.025em;
  margin: 0 0 0.5rem;
}

.post-date {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 2.5rem;
  display: block;
}

.post-body p {
  margin: 0 0 1.4em;
}

.post-body h2 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 2.25em 0 0.6em;
  letter-spacing: -0.01em;
}

.post-body h3 {
  font-size: 1rem;
  font-weight: 700;
  margin: 1.75em 0 0.5em;
}

.post-body a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: transparent;
  transition: text-decoration-color 0.15s;
}

.post-body a:hover {
  text-decoration-color: var(--accent);
}

.post-body strong {
  font-weight: 600;
}

.post-body em {
  font-style: italic;
}

.post-body ul,
.post-body ol {
  padding-left: 1.5rem;
  margin: 0 0 1.4em;
}

.post-body li {
  margin-bottom: 0.3em;
}

.post-body blockquote {
  border-left: 2px solid var(--border);
  margin: 1.5em 0;
  padding-left: 1.25rem;
  color: var(--muted);
}

.post-body code {
  font-family: var(--mono);
  font-size: 0.875em;
  background: var(--code-bg);
  padding: 0.15em 0.35em;
  border-radius: 3px;
}

.post-body pre {
  background: var(--code-bg);
  padding: 1.1rem 1.25rem;
  overflow-x: auto;
  border-radius: 5px;
  margin: 1.5em 0;
}

.post-body pre code {
  background: none;
  padding: 0;
  font-size: 0.85rem;
  line-height: 1.6;
}

.post-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5em 0;
}

.post-body img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

/* ─── Post nav ──────────────────────────────────────────────── */

.post-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 3.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.875rem;
  gap: 2rem;
}

.post-nav a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s;
}

.post-nav a:hover {
  color: var(--text);
}

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

/* ─── Page (about, etc.) ────────────────────────────────────── */

.page-body p {
  margin: 0 0 1.4em;
}

.page-body a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ─── Footer ────────────────────────────────────────────────── */

footer {
  margin-top: 5rem;
  padding: 1.75rem 1.5rem;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8125rem;
  color: var(--muted);
}

.footer-links a {
  color: var(--muted);
  text-decoration: none;
  margin-left: 1.25rem;
  transition: color 0.15s;
}

.footer-links a:hover {
  color: var(--text);
}

/* ─── Responsive ────────────────────────────────────────────── */

@media (max-width: 580px) {
  header {
    padding: 1.5rem 1.25rem 1.25rem;
    margin-bottom: 2.5rem;
  }

  main {
    padding: 0 1.25rem;
  }

  .header-inner {
    flex-direction: column;
    gap: 0.6rem;
  }

  nav a:first-child {
    margin-left: 0;
  }

  .post-row {
    flex-direction: column;
    gap: 0.05rem;
    padding: 0.45rem 0;
  }

  .post-row-date {
    width: auto;
  }

  .post-title {
    font-size: 1.35rem;
  }

  .post-nav {
    flex-direction: column;
    gap: 0.75rem;
  }

  .post-nav-next {
    text-align: left;
    margin-left: 0;
  }

  .footer-inner {
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
  }

  .footer-links a:first-child {
    margin-left: 0;
  }
}