/* ===================================================================
   PROSE — Article/content page layout
   Used by: research articles, resource guides, privacy page
   =================================================================== */

.prose {
  max-width: 680px;
  margin: 0 auto;
  padding: var(--space-5) var(--space-3) var(--space-6);
}
.prose:has(.paper) {
  max-width: 1040px;
}
.paper {
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: var(--space-5) var(--space-5);
  margin-bottom: var(--space-4);
}
@media (prefers-color-scheme: dark) {
  .paper { background: rgba(255, 255, 255, 0.04); }
}
html.theme-dark .paper { background: rgba(255, 255, 255, 0.04); }
html.theme-light .paper { background: rgba(255, 255, 255, 0.55); }
@media (max-width: 700px) {
  .paper { padding: var(--space-3) var(--space-3); }
}
.prose h1 { margin-bottom: var(--space-1); }
.prose .meta {
  color: var(--muted);
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-5);
  border-bottom: 1px solid var(--border);
  padding-bottom: var(--space-3);
}
.prose h2 { margin-top: var(--space-5); }
.prose h3 { margin-top: var(--space-4); }
.prose p, .prose li { line-height: 1.75; }
.prose hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-5) 0;
}
.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--space-4) 0;
  font-size: var(--font-size-sm);
}
.prose th, .prose td {
  text-align: left;
  padding: var(--space-1) var(--space-2);
  border-bottom: 1px solid var(--border);
}
.prose th { font-weight: var(--font-weight-semibold); color: var(--muted); }

/* Table of contents — mobile: collapsible card above paper */
.prose .toc {
  background: var(--overlay-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-2) var(--space-3);
  margin: 0 0 var(--space-3);
  font-size: var(--font-size-sm);
}
.prose .toc details summary {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-tight);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 6px;
}
.prose .toc details summary::-webkit-details-marker { display: none; }
.prose .toc details summary::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: rotate(-45deg);
  transition: transform 0.2s ease;
}
.prose .toc details[open] summary::after {
  transform: rotate(45deg);
}
.prose .toc details[open] ol {
  margin-top: var(--space-2);
}
.prose .toc ol {
  margin: 0;
  padding-left: var(--space-3);
}
.prose .toc li { margin-bottom: 4px; }
.prose .toc a { text-decoration: none; color: var(--text); }
.prose .toc a:hover { color: var(--brand); }

/* Table of contents — desktop: sticky left sidebar */
@media (min-width: 1380px) {
  .prose:has(.toc) {
    position: relative;
  }
  .prose .toc {
    position: sticky;
    top: 100px;
    float: left;
    width: 200px;
    margin-left: calc(-200px - var(--space-4));
    background: transparent;
    border: none;
    padding: 0;
    margin-top: 0;
    margin-bottom: 0;
    padding-top: var(--space-5);
  }
  .prose .toc details summary {
    pointer-events: none;
    cursor: default;
  }
  .prose .toc details summary::after { display: none; }
  .prose .toc details > ol {
    margin-top: var(--space-2);
  }
  .prose .toc a.active { color: var(--brand); font-weight: var(--font-weight-semibold); }
}

/* Post CTA row (bottom of articles) */
.post-cta-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
  max-width: 820px;
  margin: var(--space-5) auto 0;
  padding: 0 var(--space-3);
}
@media (max-width: 700px) {
  .post-cta-row { grid-template-columns: 1fr; }
}
.post-cta {
  background: var(--overlay-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.post-cta h3 { margin: 0 0 var(--space-2); font-size: var(--font-size-lg); }
.post-cta p,
.post-cta .form-group label { margin: 0 0 var(--space-2); font-weight: var(--font-weight-normal); font-size: var(--font-size-base); }
.post-cta > a.btn,
.post-cta > form { margin-top: auto; }
.post-cta .btn { line-height: 1.2; }

/* Chart figures */
.prose figure.chart { margin: var(--space-4) 0; padding: var(--space-2) var(--space-2) var(--space-1); background: #FFFFFF; border: 1px solid rgba(18,42,43,0.10); border-radius: var(--radius); box-shadow: 0 2px 12px rgba(18,42,43,0.07); }
.prose figure.chart img { max-width: 100%; height: auto; border-radius: var(--radius-sm); }
.prose figure.chart canvas { max-width: 100%; border-radius: var(--radius-sm); background: #FFFFFF; }
.prose figure.chart figcaption { font-size: var(--font-size-sm); color: var(--muted); margin-top: var(--space-2); font-style: italic; }
@media (prefers-color-scheme: dark) {
  .prose figure.chart { background: #1D3538; border-color: rgba(167,220,217,0.12); box-shadow: 0 2px 12px rgba(0,0,0,0.30); }
  .prose figure.chart canvas { background: #1D3538; }
  .prose figure.chart img { opacity: 0.92; }
}
html.theme-dark .prose figure.chart { background: #1D3538; border-color: rgba(167,220,217,0.12); box-shadow: 0 2px 12px rgba(0,0,0,0.30); }
html.theme-dark .prose figure.chart canvas { background: #1D3538; }
html.theme-dark .prose figure.chart img { opacity: 0.92; }
html.theme-light .prose figure.chart { background: #FFFFFF; border-color: rgba(18,42,43,0.10); box-shadow: 0 2px 12px rgba(18,42,43,0.07); }
html.theme-light .prose figure.chart canvas { background: #FFFFFF; }
html.theme-light .prose figure.chart img { opacity: 1; }

/* Fade in Mermaid diagrams after render */
pre.mermaid { transition: opacity 0.3s ease; }
pre.mermaid:not([data-processed]) { opacity: 0; }

/* Video figures */
.prose figure.video { margin: var(--space-4) 0; padding: var(--space-2) var(--space-2) var(--space-1); background: #FFFFFF; border: 1px solid rgba(18,42,43,0.10); border-radius: var(--radius); box-shadow: 0 2px 12px rgba(18,42,43,0.07); }
.prose figure.video video { width: 100%; border-radius: var(--radius-sm); display: block; }
.prose figure.video figcaption { font-size: var(--font-size-sm); color: var(--muted); margin-top: var(--space-2); font-style: italic; }
@media (prefers-color-scheme: dark) {
  .prose figure.video { background: #1D3538; border-color: rgba(167,220,217,0.12); box-shadow: 0 2px 12px rgba(0,0,0,0.30); }
}
html.theme-dark .prose figure.video { background: #1D3538; border-color: rgba(167,220,217,0.12); box-shadow: 0 2px 12px rgba(0,0,0,0.30); }
html.theme-light .prose figure.video { background: #FFFFFF; border-color: rgba(18,42,43,0.10); box-shadow: 0 2px 12px rgba(18,42,43,0.07); }

/* References list */
.prose .references { font-size: var(--font-size-sm); color: var(--muted); padding-left: var(--space-4); }
.prose .references li { margin-bottom: var(--space-1); line-height: 1.6; }