/* Shared styles for blog posts (arbg, falcon, ...). */
/* Loaded before each blog's inline <style>; blog-specific rules override here. */

body.is-ready { opacity: 1; }

body.is-leaving { opacity: 0; }

/* Blog typography */
.blog-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 13px;
  color: var(--accent-deep);
  margin-bottom: 0.6rem;
}

.blog-back i { font-size: 11px; }

.blog-title {
  display: block;
  text-align: left;
  font-family: 'Instrument Serif', Georgia, 'Times New Roman', serif;
  font-size: 38px;
  line-height: 1.1;
  letter-spacing: -0.012em;
  color: var(--accent-deep);
  margin: 0.2rem 0 0.5rem;
}

.gh-badge {
  display: inline-flex;
  align-items: stretch;
  font-family: 'Helvetica Neue', Verdana, sans-serif;
  font-size: 11px;
  line-height: 1;
  border-radius: 4px;
  overflow: hidden;
  text-decoration: none;
  color: #ffffff;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
  transition: box-shadow 0.18s ease, filter 0.18s ease;
}

.gh-badge:hover {
  text-decoration: none;
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.16);
  filter: brightness(1.06);
}

.gh-badge .gh-badge-label,
.gh-badge .gh-badge-value {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 5px 8px;
  white-space: nowrap;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.gh-badge .gh-badge-label {
  background: #555;
  color: #ffffff;
}

.gh-badge i { font-size: 10px; }

.gh-badge.gh-badge-award { cursor: default; }

.gh-badge.gh-badge-award .gh-badge-value { background: #d4a017; }

html.dark-mode .gh-badge { box-shadow: 0 1px 2px rgba(0, 0, 0, 0.35); }

html.dark-mode .gh-badge .gh-badge-label { background: #3a3a3a; }

.blog-divider {
  border: 0;
  height: 1px;
  background: var(--divider-line);
  margin: 1.6rem 0 1.2rem;
}

.blog-body h2 {
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  font-size: 22px;
  font-weight: 600;
}

.blog-body h3 {
  margin-top: 1.4rem;
  margin-bottom: 0.35rem;
  font-size: 16px;
  font-weight: 600;
  color: var(--accent-deep);
}

.blog-body p { margin: 0 0 0.85rem; }

.blog-body p:last-child { margin-bottom: 0; }

.blog-body ul { line-height: 1.55; }

.blog-body ul li { margin: 0.35rem 0; }

.blog-body b { color: var(--accent-deep); }

html.dark-mode .blog-body b { color: #b8d2ff; }

.fig-frame {
  display: block;
  width: 100%;
  padding: 0.9rem 1rem 0.6rem;
  background: #ffffff;
}

.fig-frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: contain;
}

.fig figcaption {
  font-size: 12.5px;
  color: #555;
  padding: 0.65rem 1rem 0.75rem;
  background: rgba(var(--accent-deep-rgb), 0.025);
  border-top: 1px solid rgba(var(--accent-deep-rgb), 0.08);
  line-height: 1.55;
}

.fig figcaption b { color: var(--accent-deep); }

/* Equation block */
.blog-eq { display: block; margin: 0.8rem auto; text-align: center; overflow-x: auto; }

.ref-card.ref-list {
  list-style-position: outside;
  font-size: 13px;
  line-height: 1.55;
  color: #555;
}

.ref-list li { margin: 0.4rem 0; padding-left: 0.2rem; }

.ref-list li::marker { color: rgba(var(--accent-deep-rgb), 0.55); font-weight: 600; }

.ref-list li em { color: #2c2c2c; }

.ref-list li strong { color: var(--accent-deep); font-weight: 600; }

html.dark-mode .ref-card {
  background: #14171f;
  border-color: rgba(255, 255, 255, 0.10);
  box-shadow: 0 2px 14px rgba(0, 0, 0, 0.35);
}

html.dark-mode .ref-list { color: #b8b8b8; }

html.dark-mode .ref-list li::marker { color: rgba(255, 255, 255, 0.40); }

html.dark-mode .ref-list li em { color: #d8d8d8; }

html.dark-mode .ref-list li strong { color: #b8d2ff; }

.callout .callout-title {
  font-weight: 700;
  color: var(--accent-deep);
}

.callout p { margin: 0.55rem 0; }

.callout p:first-of-type { margin-top: 0; }

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

.callout .blog-eq { margin: 0.6rem auto; }

html.dark-mode .callout {
  background: rgba(124, 92, 196, 0.12);
  border-left-color: #c9b6ff;
  color: #ebe6dc;
}

html.dark-mode .callout .callout-title { color: #c9b6ff; }

/* Full-width derivation box: shares the TL;DR/.callout color palette but with
   tighter padding/margins and a smaller font for dense worked-out math. */
.callout.callout-derivation {
  padding: 0.7rem 1rem 0.75rem;
  margin: 1.1rem 0;
  font-size: 12.5px;
  line-height: 1.5;
}
.callout.callout-derivation p { margin: 0.35rem 0; }
.callout.callout-derivation .blog-eq { margin: 0.4rem auto; }
.callout.callout-derivation code { font-size: 0.88em; }

/* Bib code snippet — GitHub Light by default, GitHub Dark in dark mode */
.bib-block {
  position: relative;
  margin: 0.8rem 0 0.4rem;
  background: #f6f8fa;
  color: #24292f;
  border-radius: 10px;
  border: 1px solid #d0d7de;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.05);
  overflow: hidden;
}

.bib-block .bib-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.5rem 0.85rem;
  background: #ffffff;
  border-bottom: 1px solid #d0d7de;
  font-size: 12px;
  color: #57606a;
}

.bib-block .bib-header .bib-label {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 600;
  color: #57606a;
}

.bib-block .bib-header .bib-label i { color: #0969da; }

.bib-block .bib-copy {
  background: #f6f8fa;
  color: #24292f;
  border: 1px solid #d0d7de;
  border-radius: 6px;
  padding: 0.25rem 0.6rem;
  font-size: 12px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: background 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.bib-block .bib-copy:hover {
  background: #eaeef2;
  border-color: #afb8c1;
  color: #24292f;
}

.bib-block .bib-copy i { color: #57606a; }

.bib-block .bib-copy:hover i { color: #24292f; }

.bib-block pre {
  margin: 0;
  padding: 0.95rem 1.05rem;
  font-family: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;
  font-size: 12.5px;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre;
  color: #24292f;
  tab-size: 2;
}

/* Token colors — GitHub Light */
.bib-block .tok-entry { color: #cf222e; }
.bib-block .tok-key   { color: #8250df; }
.bib-block .tok-field { color: #0550ae; }
.bib-block .tok-eq    { color: #cf222e; }
.bib-block .tok-str   { color: #0a3069; }
.bib-block .tok-brace { color: #24292f; }
.bib-block .tok-punct { color: #57606a; }
.bib-block .tok-num   { color: #0550ae; }

/* Dark mode — GitHub Dark */
html.dark-mode .bib-block {
  background: #0d1117;
  color: #e6edf3;
  border-color: #30363d;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.28);
}

html.dark-mode .bib-block .bib-header {
  background: #161b22;
  border-bottom-color: #30363d;
  color: #c9d1d9;
}

html.dark-mode .bib-block .bib-header .bib-label { color: #8b949e; }
html.dark-mode .bib-block .bib-header .bib-label i { color: #79c0ff; }

html.dark-mode .bib-block .bib-copy {
  background: #21262d;
  color: #c9d1d9;
  border-color: #30363d;
}

html.dark-mode .bib-block .bib-copy:hover {
  background: #30363d;
  border-color: #8b949e;
  color: #ffffff;
}

html.dark-mode .bib-block .bib-copy i { color: #8b949e; }
html.dark-mode .bib-block .bib-copy:hover i { color: #ffffff; }

html.dark-mode .bib-block pre { color: #e6edf3; }

html.dark-mode .bib-block .tok-entry { color: #ff7b72; }
html.dark-mode .bib-block .tok-key   { color: #ffa657; }
html.dark-mode .bib-block .tok-field { color: #d2a8ff; }
html.dark-mode .bib-block .tok-eq    { color: #ff7b72; }
html.dark-mode .bib-block .tok-str   { color: #a5d6ff; }
html.dark-mode .bib-block .tok-brace { color: #c9d1d9; }
html.dark-mode .bib-block .tok-punct { color: #8b949e; }
html.dark-mode .bib-block .tok-num   { color: #79c0ff; }

html.dark-mode .fig figcaption {
  color: #b8b8b8;
  background: rgba(255,255,255,0.04);
  border-color: rgba(255,255,255,0.06);
}