/*
  Editorial article theme.
  Scoped to the post hero, the article body (.article-post), and the
  table of contents — the rest of the site (nav, listings, footer) is
  untouched. Loaded after main.css/theme.css/syntax.css so it wins on
  specificity.
*/

:root {
  --ed-paper: #fbfaf7;
  --ed-ink: #1a1a1a;
  --ed-ink-muted: #5b5f66;
  --ed-rule: #e4e0d7;
  --ed-accent: #7a2e2e;
  --ed-code-bg: #f3f1ec;
  --ed-code-border: #ddd8cd;
  --ed-serif: "Newsreader", "Iowan Old Style", Georgia, serif;
  --ed-sans: "IBM Plex Sans", -apple-system, "Segoe UI", sans-serif;
  --ed-mono: "IBM Plex Mono", SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

/* ---------- Hero / masthead ---------- */

.post-hero {
  padding: 4.5rem 1rem 0;
  background-color: var(--ed-paper);
}

.post-hero-inner {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.post-eyebrow {
  margin: 0 0 1.25rem;
  font-family: var(--ed-sans);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ed-accent);
}

.post-eyebrow .catlist a {
  color: inherit;
  text-decoration: none;
}

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

.post-title.article-headline {
  font-family: var(--ed-serif);
  font-weight: 500;
  font-size: 3rem;
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--ed-ink);
  margin: 0 0 1.5rem;
}

.post-meta {
  font-family: var(--ed-sans);
  font-size: 0.95rem;
  color: var(--ed-ink-muted);
}

.post-meta-author {
  font-weight: 600;
  color: var(--ed-ink);
}

.post-meta-author::after {
  content: "";
  display: inline-block;
  width: 1px;
  height: 0.85em;
  margin: 0 0.65em;
  background: var(--ed-rule);
  vertical-align: middle;
}

.post-hero-img {
  display: block;
  width: 100%;
  max-width: 1040px;
  height: auto;
  margin: 3rem auto 0;
  border-radius: 2px;
  filter: saturate(0.85) contrast(1.02);
}

@media (min-width: 992px) {
  .post-title.article-headline { font-size: 3.5rem; }
}

/* ---------- Article body ---------- */

.article-post {
  max-width: 700px;
  margin: 0 auto;
  font-family: var(--ed-sans);
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--ed-ink);
}

.article-post p {
  margin-bottom: 1.6rem;
}

.article-post a {
  color: var(--ed-accent);
  text-decoration: underline;
  text-decoration-color: rgba(122, 46, 46, 0.35);
  text-underline-offset: 2px;
}

.article-post a:hover {
  text-decoration-color: currentColor;
}

.article-post h1,
.article-post h2,
.article-post h3,
.article-post h4 {
  font-family: var(--ed-serif);
  font-weight: 500;
  color: var(--ed-ink);
  margin-top: 3rem;
  margin-bottom: 1.25rem;
  line-height: 1.3;
}

.article-post h1 { font-size: 2rem; }
.article-post h2 { font-size: 1.75rem; }
.article-post h3 { font-size: 1.3rem; }
.article-post h4 { font-size: 1.1rem; }

/* Opening lede paragraph: small drop cap, a quiet editorial signature */
.article-post > p:first-of-type::first-letter {
  font-family: var(--ed-serif);
  font-weight: 500;
  color: var(--ed-accent);
  font-size: 3.4em;
  line-height: 0.85;
  float: left;
  padding-right: 0.09em;
  padding-top: 0.03em;
}

/* Standalone bold labels ("**The `Read` tool.**") read as mini subheads */
.article-post p > strong:only-child {
  display: inline-block;
  font-family: var(--ed-serif);
  font-style: italic;
  font-weight: 500;
  font-size: 1.15rem;
  color: var(--ed-ink);
}

.article-post ul,
.article-post ol {
  margin-bottom: 1.6rem;
  line-height: 1.75;
  padding-left: 1.4rem;
}

.article-post li {
  margin-bottom: 0.5rem;
}

.article-post li::marker {
  color: var(--ed-accent);
}

.article-post blockquote {
  margin: 2rem 0;
  padding: 0.25rem 0 0.25rem 1.5rem;
  border-left: 2px solid var(--ed-accent);
  font-family: var(--ed-serif);
  font-style: italic;
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--ed-ink);
}

.article-post hr {
  margin: 3.25rem 0 2.5rem;
  border: none;
  border-top: 1px solid var(--ed-rule);
}

.article-post hr + h1,
.article-post hr + h2,
.article-post hr + h3,
.article-post hr + h4 {
  margin-top: 0;
}

.article-post img {
  max-width: 100%;
  margin: 2.25rem 0;
  border-radius: 2px;
}

/* ---------- Code ---------- */

.article-post .highlighter-rouge {
  position: relative;
  margin: 2rem 0;
}

.article-post .highlighter-rouge .highlight {
  margin: 0;
}

.article-post pre.highlight,
.article-post pre {
  padding: 1.25rem 1.5rem;
  margin: 0;
  border-radius: 3px;
  border: 1px solid var(--ed-code-border);
  background-color: var(--ed-code-bg) !important;
  font-family: var(--ed-mono);
  font-size: 0.88rem;
  line-height: 1.65;
  overflow-x: visible;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.article-post .highlighter-rouge pre code {
  background: none;
  padding: 0;
  font-family: inherit;
}

.article-post .language-python,
.article-post .language-json,
.article-post .language-bash {
  padding-top: 1.75rem;
}

.article-post .language-python::before,
.article-post .language-json::before,
.article-post .language-bash::before {
  position: absolute;
  top: 0.6rem;
  right: 1rem;
  font-family: var(--ed-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ed-ink-muted);
}

.article-post .language-python::before { content: "python"; }
.article-post .language-json::before { content: "json"; }
.article-post .language-bash::before { content: "bash"; }

.article-post p code,
.article-post li code {
  font-family: var(--ed-mono);
  font-size: 0.88em;
  padding: 0.15em 0.4em;
  border-radius: 3px;
  background-color: var(--ed-code-bg);
  color: var(--ed-ink);
}

/* Retune Rouge's default palette to sit quietly inside the editorial page */
.article-post .highlight .c,
.article-post .highlight .c1,
.article-post .highlight .cm,
.article-post .highlight .cp,
.article-post .highlight .cs {
  color: var(--ed-ink-muted);
  font-style: italic;
}

.article-post .highlight .k,
.article-post .highlight .kn,
.article-post .highlight .kd,
.article-post .highlight .kc,
.article-post .highlight .kr,
.article-post .highlight .kt {
  color: #55606e;
  font-weight: 500;
}

.article-post .highlight .s,
.article-post .highlight .s1,
.article-post .highlight .s2,
.article-post .highlight .sh,
.article-post .highlight .sx {
  color: #5f6f3f;
}

.article-post .highlight .nf,
.article-post .highlight .nd {
  color: var(--ed-accent);
}

.article-post .highlight .mi,
.article-post .highlight .mf {
  color: #a05a2c;
}

.article-post .highlight .nt {
  color: #55606e;
}

/* ---------- Table of contents ---------- */

.post-toc {
  font-family: var(--ed-sans);
}

.post-toc a {
  color: var(--ed-ink-muted);
}

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

/* ---------- Diagrams ---------- */

.article-post figure.diagram {
  margin: 2.75rem 0;
}

.article-post figure.diagram svg {
  display: block;
  width: 100%;
  height: auto;
  font-family: var(--ed-sans);
}

.article-post figure.diagram figcaption {
  margin-top: 0.85rem;
  font-family: var(--ed-sans);
  font-size: 0.85rem;
  font-style: italic;
  color: var(--ed-ink-muted);
  text-align: center;
}

.article-post .diagram .box {
  fill: var(--ed-code-bg);
  stroke: var(--ed-code-border);
  stroke-width: 1;
}

.article-post .diagram .box-accent {
  fill: var(--ed-paper);
  stroke: var(--ed-accent);
  stroke-width: 1.25;
}

.article-post .diagram .box-dashed {
  fill: none;
  stroke: var(--ed-rule);
  stroke-width: 1.25;
  stroke-dasharray: 4 4;
}

.article-post .diagram .lane-rule {
  stroke: var(--ed-rule);
  stroke-width: 1;
}

.article-post .diagram .arrow {
  stroke: var(--ed-ink-muted);
  stroke-width: 1.25;
  fill: none;
}

.article-post .diagram .arrow-head {
  fill: var(--ed-ink-muted);
}

.article-post .diagram .lane-title {
  fill: var(--ed-ink-muted);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.article-post .diagram .label {
  fill: var(--ed-ink);
  font-size: 13px;
}

.article-post .diagram .label-strong {
  fill: var(--ed-ink);
  font-size: 13px;
  font-weight: 600;
}

.article-post .diagram .label-small {
  fill: var(--ed-ink-muted);
  font-size: 11px;
}

.article-post .diagram .label-muted {
  fill: var(--ed-ink-muted);
  font-size: 11px;
  font-style: italic;
}

.article-post .diagram .label-accent {
  fill: var(--ed-accent);
  font-size: 11px;
  font-weight: 500;
}