/* ============================================================
   Blog Post — Article.article-content Typography
   Scope: article.article-content (all selectors scoped inside article.article-content tag)
   No CSS variables or color values — purely structural/layout
   ============================================================ */

/* ── Headings ───────────────────────────────────────────────── */
article.article-content h1,
article.article-content h2,
article.article-content h3,
article.article-content h4,
article.article-content h5,
article.article-content h6 {
  font-weight: 700;
  line-height: 1.25;
  margin-top: 2.25em;
  margin-bottom: 0.6em;
  letter-spacing: -0.015em;
}

/* Reset top margin when a heading directly follows another heading */
article.article-content h1 + h2,
article.article-content h2 + h3,
article.article-content h3 + h4 {
  margin-top: 1em;
}

article.article-content h1 { font-size: 3rem;    letter-spacing: -0.03em; margin-top: 0; }
article.article-content h2 { font-size: 2.375rem; }
article.article-content h3 { font-size: 1.875rem; }
article.article-content h4 { font-size: 1.5rem;  }
article.article-content h5 { font-size: 1.25rem; font-weight: 600; }
article.article-content h6 { font-size: 1rem;    font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; }

/* H2 left accent bar */
article.article-content h2 {
  padding-left: 0.7em;
  border-left: 3px solid currentColor;
  opacity: 0.9;
}

/* ── Paragraph & Prose ──────────────────────────────────────── */
article.article-content p {
  margin-top: 0;
  margin-bottom: 1.5em;
}

/* Slightly larger lead paragraph after a heading */
article.article-content h1 + p,
article.article-content h2 + p,
article.article-content h3 + p {
  font-size: 1.25rem;
}

article.article-content p:last-child {
  margin-bottom: 0;
}

/* ── Links ──────────────────────────────────────────────────── */
article.article-content a {
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: text-decoration-thickness 0.15s ease;
}

article.article-content a:hover,
article.article-content a:focus-visible {
  text-decoration-thickness: 2px;
}

article.article-content a:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 2px;
  border-radius: 2px;
}

/* ── Strong & Emphasis ──────────────────────────────────────── */
article.article-content strong,
article.article-content b {
  font-weight: 700;
}

article.article-content em,
article.article-content i {
  font-style: italic;
}

/* ── Strikethrough ──────────────────────────────────────────── */
article.article-content s,
article.article-content del {
  text-decoration: line-through;
  opacity: 0.5;
}

/* ── Mark / Highlight ───────────────────────────────────────── */
article.article-content mark {
  padding: 0.05em 0.2em;
  border-radius: 2px;
}

/* ── Superscript & Subscript ────────────────────────────────── */
article.article-content sup,
article.article-content sub {
  font-size: 0.72em;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

article.article-content sup { top: -0.55em; }
article.article-content sub { bottom: -0.25em; }

/* ── Abbreviation ───────────────────────────────────────────── */
article.article-content abbr[title] {
  text-decoration: underline dotted;
  cursor: help;
}

/* ── Blockquote ─────────────────────────────────────────────── */
article.article-content blockquote {
  margin: 2.5em 0;
  padding: 1.25em 1.75em;
  border-left: 4px solid currentColor;
  border-radius: 0 6px 6px 0;
  font-style: italic;
  font-size: 1.25rem;
  opacity: 0.85;
}

article.article-content blockquote p {
  margin-bottom: 0.5em;
}

article.article-content blockquote p:last-child {
  margin-bottom: 0;
}

article.article-content blockquote cite {
  display: block;
  margin-top: 0.75em;
  font-style: normal;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  opacity: 0.6;
}

article.article-content blockquote cite::before { content: '— '; }

/* ── Inline Code ────────────────────────────────────────────── */
article.article-content code {
  font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', Consolas, monospace;
  font-size: 0.875em;
  padding: 0.15em 0.4em;
  border-radius: 4px;
  border: 1px solid currentColor;
  opacity: 0.85;
}

/* ── Code Block ─────────────────────────────────────────────── */
article.article-content pre {
  margin: 2em 0;
  padding: 1.5em 1.75em;
  border-radius: 8px;
  border: 1px solid currentColor;
  overflow-x: auto;
  line-height: 1.6;
  -webkit-overflow-scrolling: touch;
}

article.article-content pre code {
  font-size: 0.875rem;
  padding: 0;
  border: none;
  border-radius: 0;
  opacity: 1;
}

/* ── Keyboard Input ─────────────────────────────────────────── */
article.article-content kbd {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid currentColor;
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 0.15em 0.45em;
}

/* ── Sample Output ──────────────────────────────────────────── */
article.article-content samp {
  font-family: 'SF Mono', 'Fira Code', Consolas, monospace;
  font-size: 0.875em;
}

/* ── Variable ───────────────────────────────────────────────── */
article.article-content var {
  font-style: italic;
  font-family: 'SF Mono', 'Fira Code', Consolas, monospace;
  font-size: 0.875em;
}

/* ── Lists ──────────────────────────────────────────────────── */
article.article-content ul,
article.article-content ol {
  margin: 0 0 1.5em 0;
  padding-left: 1.6em;
}

article.article-content li {
  margin-bottom: 0.5em;
}

article.article-content li:last-child {
  margin-bottom: 0;
}

article.article-content ul                { list-style-type: disc; }
article.article-content ul ul             { list-style-type: circle; margin-top: 0.4em; margin-bottom: 0; }
article.article-content ul ul ul          { list-style-type: square; }

article.article-content ol                { list-style-type: decimal; }
article.article-content ol ol             { list-style-type: lower-alpha; margin-top: 0.4em; margin-bottom: 0; }
article.article-content ol ol ol          { list-style-type: lower-roman; }

/* Definition list */
article.article-content dl {
  margin: 0 0 1.5em 0;
}

article.article-content dt {
  font-weight: 700;
  margin-top: 1em;
}

article.article-content dd {
  margin-left: 1.5em;
  opacity: 0.75;
}

/* ── Horizontal Rule ────────────────────────────────────────── */
article.article-content hr {
  border: none;
  border-top: 1px solid currentColor;
  margin: 3em 0;
  opacity: 0.2;
  position: relative;
}

/* Decorative glyph on the rule */
article.article-content hr::after {
  content: '§';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 0 0.75em;
  font-size: 1.25rem;
  opacity: 0.4;
}

/* ── Table ──────────────────────────────────────────────────── */
article.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 2em 0;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.875rem;
}

article.article-content thead {
  border-bottom: 2px solid currentColor;
}

article.article-content th {
  padding: 0.65em 1em;
  text-align: left;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

article.article-content td {
  padding: 0.65em 1em;
  border-bottom: 1px solid currentColor;
  vertical-align: top;
  opacity: 0.9;
}

article.article-content tbody tr:last-child td {
  border-bottom: none;
}

article.article-content tfoot td {
  border-top: 2px solid currentColor;
  font-weight: 600;
  font-size: 0.875rem;
}

/* ── Figures & Images ───────────────────────────────────────── */
article.article-content figure {
  margin: 2.5em 0;
}

article.article-content img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: 6px;
}

article.article-content figcaption {
  margin-top: 0.65em;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.875rem;
  opacity: 0.6;
  line-height: 1.5;
  text-align: center;
}

/* ── Details / Summary ──────────────────────────────────────── */
article.article-content details {
  margin: 1.5em 0;
  border: 1px solid currentColor;
  border-radius: 6px;
  padding: 0.75em 1.25em;
  opacity: 0.9;
}

article.article-content summary {
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5em;
}

article.article-content summary::before {
  content: '▶';
  font-size: 0.65em;
  transition: transform 0.2s ease;
}

article.article-content details[open] summary::before {
  transform: rotate(90deg);
}

article.article-content details[open] summary {
  margin-bottom: 0.75em;
}

/* ── Address ────────────────────────────────────────────────── */
article.article-content address {
  font-style: normal;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.875rem;
  opacity: 0.75;
  line-height: 1.6;
}

/* ── Small Print ────────────────────────────────────────────── */
article.article-content small {
  font-size: 0.75rem;
  font-family: Arial, Helvetica, sans-serif;
  opacity: 0.6;
}

/* ── Cite ───────────────────────────────────────────────────── */
article.article-content cite {
  font-style: italic;
  opacity: 0.8;
}

/* ── Time ───────────────────────────────────────────────────── */
article.article-content time {
  font-family: Arial, Helvetica, sans-serif;
  font-size: 0.875em;
  opacity: 0.7;
}

/* ── Inserted / Deleted Text ────────────────────────────────── */
article.article-content ins {
  text-decoration: underline;
  text-decoration-style: double;
  font-style: normal;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 640px) {
  article.article-content h1 { font-size: 2.375rem; }
  article.article-content h2 { font-size: 1.875rem; }
  article.article-content h3 { font-size: 1.5rem;   }

  article.article-content table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  article.article-content pre {
    margin-inline: -1.25rem;
    border-radius: 0;
  }
}

/* ── Reduced Motion ─────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  article.article-content summary::before {
    transition: none;
  }
  article.article-content a {
    transition: none;
  }
}

/* ── Print ──────────────────────────────────────────────────── */
@media print {
  article.article-content {
    padding: 0;
    font-size: 11pt;
    max-width: 100%;
  }
  article.article-content a::after {
    content: ' (' attr(href) ')';
    font-size: 0.8em;
    opacity: 0.6;
  }
  article.article-content pre {
    border: 1px solid currentColor;
    white-space: pre-wrap;
  }
}