/*
 * Blog-only additions to the shared editorial design in style.css.
 * This file extends the established blog; it does not redefine the shell.
 */

:root {
  --mech-page-style-signal: 1px;
}

/* Blog chrome keeps the exact editorial color and scrollbar behavior. */
html[data-mech-shim="blog"],
html[data-mech-shim="blog"] body {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

html[data-mech-shim="blog"]::-webkit-scrollbar,
html[data-mech-shim="blog"] body::-webkit-scrollbar {
  display: none;
}

html[data-mech-shim="blog"] .content-shell {
  scrollbar-color: var(--mech-scrollbar) transparent;
}

html[data-mech-shim="blog"] .content-shell::-webkit-scrollbar {
  width: 8px;
}

html[data-mech-shim="blog"] .content-shell::-webkit-scrollbar-thumb {
  background: var(--mech-scrollbar);
  background-clip: content-box;
  border: 2px solid transparent;
}

html[data-mech-shim="blog"] .content-shell::-webkit-scrollbar-thumb:hover {
  background: var(--mech-scrollbar-hover);
  background-clip: content-box;
}

/* The summary is part of the hero, not a generic abstract block. */
html[data-mech-shim="blog"] .hero-summary .mech-summary {
  border-top: 1px dotted var(--hero-accent);
  color: var(--hero-text-secondary);
  line-height: 1.75;
  margin: 22px 0 0;
  padding-top: 18px;
}

html[data-mech-shim="blog"] .hero-summary .mech-summary p {
  color: inherit;
  font-weight: 400;
  line-height: inherit;
  margin: 0;
}

html[data-mech-shim="blog"] .article-intro li p {
  margin: 0 0 5px;
}

html[data-mech-shim="blog"] .article-intro {
  display: flow-root;
}

/* The journal keeps the original fixed TOC/content rhythm on wide pages. */
html[data-mech-shim="blog"] .article-layout {
  display: grid;
  grid-template-columns: var(--toc-width) minmax(0, 1fr);
}

html[data-mech-shim="blog"]
  .article-layout:is(.hide-toc, .no-sections, .has-empty-toc) {
  display: block;
}

html[data-mech-shim="blog"] .article-layout > .main-content {
  width: 100%;
}

html[data-mech-shim="blog"] [data-mechdown] li {
  padding-left: 3px;
}

html[data-mech-shim="blog"] [data-mechdown] li p {
  margin-block: 2px;
}

html[data-mech-shim="blog"] [data-mechdown] .mech-image,
html[data-mech-shim="blog"] [data-mechdown] .mech-figure-caption {
  max-width: 110%;
  width: 110%;
}

html[data-mech-shim="blog"] [data-mechdown] .mech-float :is(.mech-image, .mech-figure-caption) {
  max-width: 100%;
  width: 100%;
}

html[data-mech-shim="blog"] [data-mechdown] .mech-figure-caption .mech-paragraph {
  color: var(--mech-text-reading);
}

html[data-mech-shim="blog"] :is(.main-content, .article-intro) .mech-float {
  max-width: 100%;
  width: min(48%, 520px);
}

html[data-mech-shim="blog"] :is(.main-content, .article-intro) .mech-float .mech-image {
  height: auto;
  width: 100%;
}

html[data-mech-shim="blog"] .backmatter-body :is(ol, ul) {
  margin: 0;
  padding-left: 1.2em;
}

html[data-mech-shim="blog"] .backmatter-body li + li {
  margin-top: 8px;
}

/* The published blog keeps notes at the prose reading size, with plain
 * backmatter headings and no extra section gap above their own margins. */
html[data-mech-shim="blog"] .backmatter-body :is(.mech-footnotes, .mech-works-cited) {
  margin-top: 0;
}

html[data-mech-shim="blog"] .backmatter-body .mech-backmatter-heading {
  color: var(--text-primary);
  font-family: inherit;
  line-height: inherit;
}

html[data-mech-shim="blog"] .backmatter-body .mech-footnote {
  margin-bottom: 0;
}

html[data-mech-shim="blog"] .backmatter-body .mech-footnote .mech-paragraph {
  font-size: 1.06rem;
  font-weight: 400;
}

html[data-mech-shim="blog"] [data-mechdown] .mech-footnote-reference {
  font-family: monospace;
}

html[data-mech-shim="blog"] body.narrow-content .mech-float,
html[data-mech-shim="blog"] body.narrow-content .mech-float.left,
html[data-mech-shim="blog"] body.narrow-content .mech-float.right {
  clear: both;
  display: block;
  float: none !important;
  margin: 12px 0;
  max-width: 100%;
  width: 100%;
}

html[data-mech-shim="blog"] body.narrow-content .mech-float .mech-image {
  max-height: min(60vh, 560px);
  object-fit: contain;
  width: auto;
}

.hero {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(20px, 3cqw, 36px);
}

.hero h1 {
  font-size: clamp(34px, 4.2cqw, 52px);
  text-wrap: balance;
}

.hero .mech-meta .mech-author {
  flex: 0 1 24ch;
  max-width: 24ch;
  min-width: 0;
}

.hero .mech-meta .mech-date {
  flex: 0 0 auto;
  white-space: nowrap;
}

.hero .mech-meta > [aria-hidden="true"] {
  flex: 0 0 auto;
}

.hero-visual {
  min-width: 0;
}

/* Match the docked resize track to the visible panes, not the document's
 * intrinsic grid-row height, so its centered grip stays in the viewport. */
@media (min-width: 901px) {
  html[data-mech-shim="blog"] [data-mech-repl-host][data-mech-console-mode="docked"] > [data-mech-console-resizer]:not([data-mech-console-edge-handle]) {
    align-self: start;
    height: calc(100dvh - var(--mech-repl-header-height));
    position: sticky;
    top: var(--mech-repl-header-height);
  }

  /* The divider is the console's left border, at the track's right edge. */
  html[data-mech-shim="blog"] [data-mech-repl-host][data-mech-console-mode="docked"] > [data-mech-console-resizer]:not([data-mech-console-edge-handle])::before,
  html[data-mech-shim="blog"] [data-mech-repl-host][data-mech-console-mode="docked"] > [data-mech-console-resizer]:not([data-mech-console-edge-handle])::after {
    left: calc(100% + 0.5px);
  }
}

/* A document without hero artwork uses the same title and metadata styles
 * without reserving an empty image column. */
.hero:has(> .hero-visual:empty) {
  grid-template-columns: minmax(0, 1fr);
}

.hero > .hero-visual:empty {
  display: none;
}

.mech-hero-img {
  border: 1px solid var(--border);
  border-radius: 12px;
  min-height: 320px;
  overflow: hidden;
}

.mech-hero-img figure {
  display: block;
  height: 100%;
  margin: 0;
  padding: 0;
  width: 100%;
}

.mech-hero-img figure img {
  display: block;
  height: 100%;
  object-fit: cover;
  width: 100%;
}

.mech-hero-img figure figcaption {
  display: none;
}

.article-intro {
  margin: 0 0 52px;
  max-width: 100%;
}

.article-intro > .mech-intro > p {
  color: var(--body-primary);
  font-size: 1.06rem;
  line-height: 1.85;
  margin: 0 0 18px;
}

.article-intro > .mech-intro > p:first-of-type::first-letter {
  color: var(--accent-primary);
  float: left;
  font-size: 4.5em;
  font-weight: 700;
  line-height: 0.84;
  margin-top: 0.15em;
  padding-right: 12px;
}

.article-intro .mech-code .mech-comment p {
  font-size: inherit;
  line-height: inherit;
  margin: 0;
}

.main-content[data-mechdown] {
  counter-reset: mechdown-section equation;
}

[data-mechdown] .mech-block-quote {
  font-family: Georgia, serif;
  font-style: italic;
  margin: 40px auto;
  padding: 40px 30px;
  position: relative;
  width: 80%;
}

[data-mechdown] .mech-block-quote::before,
[data-mechdown] .mech-block-quote::after {
  color: var(--mechdown-link);
  font-family: Georgia, serif;
  font-size: 32pt;
  position: absolute;
}

[data-mechdown] .mech-block-quote::before {
  content: "“";
  left: 15px;
  top: 5px;
}

[data-mechdown] .mech-block-quote::after {
  bottom: -17px;
  content: "”";
  right: 15px;
}

[data-mechdown] .mech-block-quote p {
  font-size: 14pt;
  line-height: 1.6;
  margin: 10px 0 0;
  text-indent: 25px;
}

[data-mechdown] :is(
  .mech-info-block,
  .mech-question-block,
  .mech-success-block,
  .mech-warning-block,
  .mech-error-block,
  .mech-idea-block
) {
  font-family: Georgia, serif;
  margin-inline: auto;
  width: 80%;
}

[data-mechdown] .mech-equation {
  counter-increment: equation;
}

[data-mechdown] .mech-equation::after {
  color: var(--mechdown-link);
  content: "Eq. " counter(equation);
  float: right;
  font-size: 0.82rem;
  font-style: italic;
  line-height: 1.4;
}

.backmatter-cited .backmatter-body {
  column-count: 2;
  column-gap: 2rem;
}

@container (max-width: 980px) {
  .hero {
    gap: 14px;
    grid-template-columns: 1fr;
  }

  .hero-visual,
  .mech-hero-img {
    min-height: 0;
  }

  .hero h1 {
    font-size: clamp(32px, 5.7cqw, 48px);
  }

  .mech-hero-img figure img {
    aspect-ratio: auto;
    height: auto;
    object-fit: contain;
  }
}

@media (max-width: 900px) {
  html[data-mech-shim="blog"] .article-layout {
    display: block;
  }

  /* Start compact pages with the article visible. The shared controller reads
   * this initial visibility; the edge handle still opens the working REPL. */
  html[data-mech-shim="blog"] [data-mech-repl-host]:not([data-mech-console-open]) [data-mech-console-pane] {
    display: none;
  }
}

@container (max-width: 900px) {
  html[data-mech-shim="blog"] .article-layout {
    display: block;
  }

  html[data-mech-shim="blog"] .article-abstract .mech-paragraph {
    text-align: left;
  }
}

@media (max-width: 760px) {
  html[data-mech-shim="blog"] :is(.main-content, .article-intro) .mech-float {
    clear: both;
    float: none;
    margin: 1.5rem 0;
    max-width: 100%;
    width: 100%;
  }

  [data-mechdown] :is(
    .mech-block-quote,
    .mech-info-block,
    .mech-question-block,
    .mech-success-block,
    .mech-warning-block,
    .mech-error-block,
    .mech-idea-block
  ) {
    width: 100%;
  }
}

@media (max-width: 700px) {
  .backmatter-cited .backmatter-body {
    column-count: 1;
    column-gap: 0;
  }
}