/* --- Readable content width & base type --- */
:root {
  --font-size: 17px;        /* base size for posts */
  --line-height: 1.75;
  --text: #111;
  --muted: #666;
  --link: #0b57d0;
  --border: #e5e7eb;
  --bg-code: #f6f8fa;
}

.post-content {
  max-width: var(--measure);
  margin-inline: auto;
  font-size: var(--font-size);
  line-height: var(--line-height);
  color: var(--text);
  word-wrap: break-word;
}

/* --- Headings rhythm --- */
.post-content h1, .post-content h2, .post-content h3,
.post-content h4, .post-content h5, .post-content h6 {
  line-height: 1.25;
  margin-top: 2.0rem;
  margin-bottom: 0.8rem;
}
.post-content h1 { font-size: 1.9rem; }
.post-content h2 { font-size: 1.6rem; }
.post-content h3 { font-size: 1.35rem; }

/* --- Paragraphs & lists --- */
.post-content p,
.post-content ul,
.post-content ol,
.post-content blockquote {
  margin: 0.9rem 0;
}
.post-content li { margin: 0.35rem 0; }

/* --- Links --- */
.post-content a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.post-content a:hover { opacity: 0.9; }

/* --- Images & figures --- */
.post-content img,
.post-content video,
.post-content canvas,
.post-content iframe {
  max-width: 100%;
  height: auto;
}
.post-content figure {
  margin: 1.25rem 0;
  text-align: center;
}
.post-content figcaption {
  font-size: 0.92rem;
  color: var(--muted);
  margin-top: 0.35rem;
}

/* --- Code --- */
.post-content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  font-size: 0.95em;
  background: var(--bg-code);
  padding: 0.12em 0.35em;
  border-radius: 4px;
}
.post-content pre {
  background: var(--bg-code);
  padding: 0.9rem 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow-x: auto;
  line-height: 1.55;
}
.post-content pre code {
  background: none;
  padding: 0;
  border: 0;
}

/* --- Blockquotes --- */
.post-content blockquote {
  padding: 0.6rem 1rem;
  border-left: 4px solid var(--border);
  background: #fafafa;
  color: #222;
}

/* --- Tables --- */
.post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
  font-size: 0.97rem;
}
.post-content th,
.post-content td {
  padding: 0.6rem 0.7rem;
  border: 1px solid var(--border);
}
.post-content thead th {
  background: #f3f4f6;
  text-align: left;
}

/* --- Horizontal rule --- */
.post-content hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* --- Footnotes --- */
.post-content .footnotes {
  font-size: 0.92rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  margin-top: 2rem;
  padding-top: 1rem;
}

/* --- MathJax v3 tweaks --- */
mjx-container[jax="CHTML"][display="true"] {
  display: block;
  margin: 1.25rem auto;
  overflow-x: auto;       /* long equations can scroll horizontally */
}
mjx-container { font-size: 1.02em; }

/* --- Dark mode --- */
@media (prefers-color-scheme: dark) {
  :root {
    --text: #000000;
    --muted: #a3a3a3;
    --link: #002aff;
    --border: #2b2b2b;
    --bg-code: #d9dde2;
  }
  .post-content blockquote { background: #121417; color: #e5e5e5; }
  .post-content thead th { background: #171a1f; }
}