/* =====================================================
   Blog — shared styles, aligned with main site theme
   GitHub Primer palette + JetBrains Mono
   ===================================================== */

:root {
  --bg:      #f6f8fa;
  --surface: #ffffff;
  --text:    #1f2328;
  --muted:   #636c76;
  --border:  #d0d7de;
  --accent:  #0969da;
  --prompt:  #1a7f37;
  --mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code',
          Consolas, 'Courier New', monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg:      #282a36;
    --surface: #21222c;
    --text:    #f8f8f2;
    --muted:   #6272a4;
    --border:  #44475a;
    --accent:  #8be9fd;
    --prompt:  #50fa7b;
  }
}

body {
  background: var(--bg);
  font-family: var(--mono);
  font-size: 14px;
  color: var(--text);
  line-height: 1.7;
}

/* =====================================================
   Header
   ===================================================== */
.header-container {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  padding: 20px 32px;
  max-width: 1500px;
  margin: 0 auto;
  box-sizing: border-box;
}

.header-content {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.header-content h1 {
  margin: 0;
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  text-shadow: none;
  text-align: center;
}

/* Terminal prompt prefix on title */
.header-content h1::before {
  content: "> ";
  color: var(--prompt);
  font-weight: 400;
}

.header-content p {
  margin: 6px 0 0;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  text-align: center;
}

.header-meta {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--muted);
}

.header-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

.back-link {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--muted);
  text-decoration: none;
  font-weight: 400;
  border-bottom: 1px dashed var(--muted);
  padding-bottom: 1px;
  transition: color 0.15s, border-color 0.15s;
}

.back-link::before {
  content: "← ";
  color: var(--prompt);
}

.back-link:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
  text-decoration: none;
}

/* =====================================================
   Article body
   ===================================================== */
d-article {
  contain: none;
  max-width: 1500px;
  margin: 0 auto;
  padding: 0 32px 80px;
  font-family: var(--mono);
  font-size: 14px;
  color: var(--text);
  line-height: 1.75;
}

d-article p { margin: 0 0 1em; }

d-article a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: none;
}

d-article a:hover {
  text-decoration: underline;
  text-decoration-style: dotted;
}

d-article strong { font-weight: 700; }

d-article em { font-style: italic; }

/* =====================================================
   Section headings
   ===================================================== */
d-article section { margin: 0 !important; }

d-article section h2 {
  font-family: var(--mono);
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin: 2em 0 0.75em;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
  letter-spacing: 0.02em;
}

d-article section h2::before {
  content: "> ";
  color: var(--prompt);
  font-weight: 400;
}

/* =====================================================
   Side nav (d-contents)
   ===================================================== */
d-article d-contents {
  max-width: 100%;
  box-sizing: border-box;
  align-self: start;
  grid-column: 1 / 4;
  grid-row: auto / span 4;
  justify-self: end;
  margin-top: 4em;
  padding-right: 2em;
  padding-left: 1.5em;
  border-right: 1px solid var(--border);
  z-index: 1000;
  min-height: 380px;
}

d-article d-contents nav h4 {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 0.75em;
}

d-article d-contents nav div {
  font-weight: 400;
  color: var(--muted);
}

d-article d-contents nav a {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  border-bottom: none;
  text-decoration: none;
  transition: color 0.15s;
}

d-article d-contents nav a:hover,
d-article d-contents nav a.active-nav-item {
  color: var(--prompt);
  text-decoration: none;
}

d-article d-contents nav > div {
  display: block;
  outline: none;
  margin-bottom: 0.4em;
}

d-article d-contents nav > div > a {
  font-size: 12px;
  font-weight: 500;
}

d-article d-contents li { list-style-type: none; }
d-article d-contents ul { padding-left: 1em; margin: 0 0 6px; }
d-article d-contents nav ul li { margin-bottom: 0.2em; }

.active-nav-item {
  color: var(--prompt) !important;
  font-weight: 600 !important;
}

/* =====================================================
   References
   ===================================================== */
#references h2 { font-size: 15px; }

#references li,
#references p {
  font-size: 13px;
  line-height: 1.6;
}

.references ol {
  padding-left: 18px;
  color: var(--text);
}

.references li { margin-bottom: 10px; }

/* =====================================================
   Finding box
   ===================================================== */
.finding-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 0 4px 4px 0;
  padding: 10px 16px;
  margin: 1em 0;
  box-sizing: border-box;
}

.finding-box ul {
  margin: 0.5em 0;
  padding-left: 1.2em;
  list-style-type: disc;
}

.finding-box li {
  margin-bottom: 0.5em;
  line-height: 1.6;
  font-size: 13px;
}

.finding-box li:last-child { margin-bottom: 0; }

/* =====================================================
   Byline
   ===================================================== */
.byline {
  padding: 0 5px 10px;
  margin-bottom: 20px;
}

.byline-container {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  max-width: 1000px;
  margin: 0 auto;
}

.byline-column {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.byline-column h3 {
  margin-bottom: 10px;
  font-size: 14px;
  font-family: var(--mono);
  color: var(--text);
}

.byline-column p {
  font-size: 13px;
  color: var(--muted);
  margin: 5px 0;
  font-family: var(--mono);
}

.author-link, .affiliation-link {
  color: var(--muted);
  text-decoration: none;
  border-bottom: none;
  cursor: pointer;
}

.author-link:hover, .affiliation-link:hover {
  text-decoration: underline;
  text-decoration-style: dotted;
  border-bottom: none;
}

/* =====================================================
   Misc
   ===================================================== */
.shaded-figure {
  background: var(--bg);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 30px 0;
}

.display-table {
  margin: 0 auto;
  text-align: center;
  font-family: var(--mono);
  font-size: 13px;
}

.display-table th td {
  border-bottom: 1px solid var(--border);
  text-align: center;
  padding: 8px;
}

.display-table th {
  border-top: 1px solid var(--border);
}

/* =====================================================
   Responsive
   ===================================================== */
@media (max-width: 768px) {
  d-contents { display: none; }

  .header-container {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 16px;
    text-align: center;
  }

  .header-meta { text-align: center; }

  d-article { padding: 0 16px 60px; }
}