/* From the Simulation — minimal Jekyll theme */

:root {
  --bg: #ffffff;
  --fg: #1a1a1a;
  --muted: #6b7280;
  --accent: #2563eb;
  --border: #e5e7eb;
  --code-bg: #f6f8fa;
  --maxw: 48rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1117;
    --fg: #e6edf3;
    --muted: #8b949e;
    --accent: #58a6ff;
    --border: #21262d;
    --code-bg: #161b22;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  font-size: 18px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 1.25rem;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 2rem 0 1.25rem;
  margin-bottom: 2.5rem;
}

.site-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--fg);
  letter-spacing: -0.02em;
}
.site-title:hover { text-decoration: none; color: var(--accent); }

.site-tagline {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-nav {
  margin-top: 1rem;
  display: flex;
  gap: 1.25rem;
  font-size: 0.925rem;
}
.site-nav a { color: var(--muted); }
.site-nav a:hover { color: var(--accent); text-decoration: none; }

/* ---------- Post list ---------- */
.post-list { list-style: none; padding: 0; margin: 0; }
.post-list > li {
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
}
.post-list h2 { margin: 0 0 0.35rem; font-size: 1.35rem; letter-spacing: -0.01em; }
.post-list h2 a { color: var(--fg); }
.post-list h2 a:hover { color: var(--accent); text-decoration: none; }

.post-subtitle {
  margin: 0.25rem 0 0.4rem;
  color: var(--muted);
  font-size: 1rem;
  font-style: italic;
}

.post-meta {
  margin: 0.25rem 0 0;
  color: var(--muted);
  font-size: 0.875rem;
}

.post-excerpt { margin: 0.6rem 0 0; color: var(--fg); opacity: 0.85; }

/* ---------- Article ---------- */
.post-header { margin-bottom: 2rem; }
.post-title { margin: 0 0 0.4rem; font-size: 2.1rem; line-height: 1.2; letter-spacing: -0.025em; }

.post-content { font-size: 1.0625rem; }
.post-content h1 { font-size: 1.7rem; margin-top: 2.25rem; }
.post-content h2 { font-size: 1.4rem; margin-top: 2rem; }
.post-content h3 { font-size: 1.2rem; margin-top: 1.75rem; }
.post-content h1, .post-content h2, .post-content h3 {
  line-height: 1.3;
  letter-spacing: -0.015em;
}

.post-content p { margin: 1.1rem 0; }

.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: 6px;
  margin: 1.5rem 0;
  border: 1px solid var(--border);
  display: block;
}

.post-content blockquote {
  margin: 1.5rem 0;
  padding: 0.25rem 1.25rem;
  border-left: 3px solid var(--accent);
  color: var(--muted);
  font-style: italic;
}

.post-content ul, .post-content ol { padding-left: 1.5rem; }
.post-content li { margin: 0.4rem 0; }

/* Inline code */
.post-content code {
  background: var(--code-bg);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

/* Fenced code blocks */
.post-content pre {
  background: var(--code-bg);
  padding: 1rem 1.15rem;
  border-radius: 8px;
  overflow-x: auto;
  border: 1px solid var(--border);
  line-height: 1.5;
}
.post-content pre code {
  background: none;
  padding: 0;
  font-size: 0.875rem;
}

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

/* Tables */
.post-content table {
  border-collapse: collapse;
  width: 100%;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}
.post-content th, .post-content td {
  border: 1px solid var(--border);
  padding: 0.5rem 0.75rem;
  text-align: left;
}
.post-content th { background: var(--code-bg); }

/* ---------- Tags / nav ---------- */
.post-tags { margin-top: 2.5rem; display: flex; gap: 0.5rem; flex-wrap: wrap; }
.tag, .cat {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.2rem 0.7rem;
  font-size: 0.8rem;
  color: var(--muted);
}

.post-nav {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.925rem;
}
.post-nav .next { margin-left: auto; text-align: right; }

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 4rem;
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.875rem;
}

.intro {
  color: var(--muted);
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.5rem;
}

.archive-link {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}


@media (max-width: 600px) {
  body { font-size: 17px; }
  .post-title { font-size: 1.7rem; }
  .post-nav { flex-direction: column; }
  .post-nav .next { text-align: left; margin-left: 0; }
}