/* ===========================================================================
   Blog — layered on top of styles.css (inherits tokens, atmosphere, nav)
   =========================================================================== */

.blog-body {
  /* The blog has no hero, so the nav starts in its solid state (class="scrolled"). */
  padding-top: 0;
}

.blog-page {
  padding: clamp(6.5rem, 12vw, 9rem) clamp(1.25rem, 4vw, 2.5rem) 4rem;
  max-width: var(--maxw);
  margin: 0 auto;
}

/* Reading progress ------------------------------------------------------- */

.read-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  z-index: 200;
  background: linear-gradient(90deg, var(--accent), var(--gold));
  transition: width 0.1s linear;
}

@media (prefers-reduced-motion: reduce) {
  .read-progress { transition: none; }
}

/* ---------------------------------------------------------------------------
   Index
   --------------------------------------------------------------------------- */

.blog-index-header {
  max-width: 720px;
  margin-bottom: clamp(2.5rem, 5vw, 3.75rem);
}

.blog-index-title {
  font-family: var(--display);
  font-size: clamp(2.4rem, 6vw, 3.9rem);
  line-height: 1.03;
  letter-spacing: -0.03em;
  margin: 1rem 0 0.9rem;
  color: var(--text);
}

.blog-index-deck {
  font-size: clamp(1.02rem, 1.9vw, 1.18rem);
  line-height: 1.65;
  color: var(--text-dim);
  margin: 0 0 1.5rem;
}

.blog-feed-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  text-decoration: none;
  padding: 0.55rem 0.95rem;
  border: 1px solid var(--accent-line);
  border-radius: 999px;
  background: var(--accent-soft);
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease);
}

.blog-feed-link:hover,
.blog-feed-link:focus-visible {
  background: rgba(98, 201, 255, 0.22);
  border-color: var(--accent);
}

.post-list {
  display: grid;
  gap: 1.15rem;
}

.post-card {
  display: block;
  position: relative;
  padding: clamp(1.4rem, 3vw, 2rem);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--panel);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease), transform 0.25s var(--ease);
}

.post-card:hover,
.post-card:focus-visible {
  border-color: var(--border-strong);
  background: var(--panel-hover);
  transform: translateY(-2px);
}

@media (prefers-reduced-motion: reduce) {
  .post-card:hover, .post-card:focus-visible { transform: none; }
}

.post-card-meta,
.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.post-card-meta .dot,
.post-meta .dot { opacity: 0.5; }

.post-card-title {
  font-family: var(--display);
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  line-height: 1.22;
  letter-spacing: -0.02em;
  margin: 0.7rem 0 0.55rem;
  color: var(--text);
}

.post-card-deck {
  font-size: 1rem;
  line-height: 1.62;
  color: var(--text-dim);
  margin: 0;
  max-width: 68ch;
}

.post-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 1.1rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent);
}

.post-card-cta svg {
  width: 14px;
  height: 14px;
  transition: transform 0.25s var(--ease);
}

.post-card:hover .post-card-cta svg { transform: translateX(3px); }

.post-empty {
  color: var(--text-faint);
  font-family: var(--mono);
  font-size: 0.9rem;
}

/* Tags ------------------------------------------------------------------- */

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1rem;
}

.post-tag {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-faint);
  padding: 0.3rem 0.6rem;
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  background: var(--inset);
}

/* ---------------------------------------------------------------------------
   Article
   --------------------------------------------------------------------------- */

.post-header {
  max-width: 780px;
  margin-bottom: clamp(2.25rem, 4.5vw, 3.25rem);
  padding-bottom: clamp(1.5rem, 3vw, 2.25rem);
  border-bottom: 1px solid var(--border-soft);
}

.post-backlink {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  text-decoration: none;
  margin-bottom: 1.5rem;
  transition: color 0.2s var(--ease);
}

.post-backlink:hover,
.post-backlink:focus-visible { color: var(--accent); }

.post-title {
  font-family: var(--display);
  font-size: clamp(2.1rem, 5.2vw, 3.35rem);
  line-height: 1.06;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
  color: var(--text);
}

.post-deck {
  font-size: clamp(1.05rem, 2.1vw, 1.28rem);
  line-height: 1.6;
  color: var(--text-dim);
  margin: 0 0 1.4rem;
  max-width: 62ch;
}

/* Two-column: sticky TOC + body. Collapses under 1000px. */

.post-layout {
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.post-layout:not(:has(.post-toc)) {
  grid-template-columns: minmax(0, 1fr);
}

.post-toc {
  position: sticky;
  top: 6.5rem;
  max-height: calc(100vh - 9rem);
  overflow-y: auto;
  padding-right: 0.5rem;
}

.post-toc-title {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin: 0 0 0.9rem;
}

.post-toc ul {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--border-soft);
}

.post-toc li { margin: 0; }

.post-toc a {
  display: block;
  padding: 0.4rem 0 0.4rem 0.9rem;
  margin-left: -1px;
  border-left: 1px solid transparent;
  font-size: 0.86rem;
  line-height: 1.4;
  color: var(--text-faint);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.post-toc li.toc-d3 a {
  padding-left: 1.7rem;
  font-size: 0.81rem;
}

.post-toc a:hover,
.post-toc a:focus-visible { color: var(--text); }

.post-toc a.active {
  color: var(--accent);
  border-left-color: var(--accent);
}

@media (max-width: 1000px) {
  .post-layout { grid-template-columns: minmax(0, 1fr); }
  .post-toc {
    position: static;
    max-height: none;
    padding: 1.1rem 1.25rem;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-sm);
    background: var(--inset);
    margin-bottom: 2rem;
  }
}

/* Body typography -------------------------------------------------------- */

.post-content {
  max-width: 74ch;
  font-size: 1.06rem;
  line-height: 1.78;
  color: var(--text-dim);
}

.post-content > *:first-child { margin-top: 0; }

.post-content p { margin: 0 0 1.4rem; }

.post-content h2 {
  font-family: var(--display);
  font-size: clamp(1.5rem, 3.2vw, 1.95rem);
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 3rem 0 1.1rem;
  scroll-margin-top: 6.5rem;
}

.post-content h3 {
  font-family: var(--display);
  font-size: clamp(1.15rem, 2.4vw, 1.35rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 2.2rem 0 0.85rem;
  scroll-margin-top: 6.5rem;
}

.post-content h4 {
  font-family: var(--body);
  font-weight: 600;
  font-size: 1.03rem;
  color: var(--text);
  margin: 1.8rem 0 0.7rem;
}

.post-content strong { color: var(--text); font-weight: 600; }

.post-content a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-line);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.post-content a:hover,
.post-content a:focus-visible {
  color: #9adcff;
  border-bottom-color: var(--accent);
}

.post-content ul,
.post-content ol {
  margin: 0 0 1.5rem;
  padding-left: 1.35rem;
}

.post-content li { margin-bottom: 0.55rem; }
.post-content li::marker { color: var(--accent); }
.post-content ol li::marker { color: var(--text-faint); font-family: var(--mono); font-size: 0.85em; }

.post-content blockquote {
  margin: 1.9rem 0;
  padding: 1.1rem 1.4rem;
  border-left: 2px solid var(--gold-line);
  border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
  background: var(--gold-soft);
  color: var(--text);
}

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

.post-content hr {
  border: 0;
  height: 1px;
  background: var(--border-soft);
  margin: 2.8rem 0;
}

.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-soft);
  margin: 1.6rem 0;
}

/* Code ------------------------------------------------------------------- */

.post-content code {
  font-family: var(--mono);
  font-size: 0.86em;
  padding: 0.16em 0.42em;
  border-radius: 5px;
  background: var(--inset);
  border: 1px solid var(--border-soft);
  color: #d8e4ff;
  word-break: break-word;
}

.post-content pre {
  position: relative;
  margin: 1.7rem 0;
  padding: 1.15rem 1.25rem;
  overflow-x: auto;
  background: var(--inset);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  line-height: 1.62;
}

.post-content pre code {
  padding: 0;
  border: 0;
  background: none;
  font-size: 0.855rem;
  color: #cfe0ff;
}

.code-copy {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  background: rgba(10, 14, 28, 0.85);
  border: 1px solid var(--border-soft);
  border-radius: 6px;
  padding: 0.32rem 0.55rem;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.post-content pre:hover .code-copy,
.code-copy:focus-visible { opacity: 1; }

.code-copy:hover { color: var(--accent); border-color: var(--accent-line); }
.code-copy.copied { color: var(--gold); border-color: var(--gold-line); opacity: 1; }

/* Tables ----------------------------------------------------------------- */

.table-wrap {
  overflow-x: auto;
  margin: 1.7rem 0;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
}

.post-content table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.93rem;
}

.post-content th,
.post-content td {
  text-align: left;
  padding: 0.7rem 0.95rem;
  border-bottom: 1px solid var(--border-soft);
  vertical-align: top;
}

.post-content th {
  font-family: var(--mono);
  font-size: 0.71rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-faint);
  background: var(--inset);
  white-space: nowrap;
}

.post-content tbody tr:last-child td { border-bottom: 0; }
.post-content tbody tr:hover { background: rgba(151, 180, 255, 0.04); }

/* Sources ---------------------------------------------------------------- */

.post-sources {
  margin-top: 3.25rem;
  padding: 1.5rem 1.6rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  background: var(--inset);
}

.post-sources h2 {
  font-family: var(--mono);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin: 0 0 1rem;
}

.post-sources ol {
  margin: 0;
  padding-left: 1.2rem;
  font-size: 0.93rem;
  line-height: 1.6;
}

.post-sources li { margin-bottom: 0.6rem; word-break: break-word; }
.source-note { color: var(--text-faint); }

.post-sources-note {
  margin: 1rem 0 0;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
}

/* Footer ----------------------------------------------------------------- */

.post-footer {
  margin-top: clamp(3rem, 6vw, 4.5rem);
  padding-top: 2rem;
  border-top: 1px solid var(--border-soft);
}

.post-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.post-author-mark {
  flex: 0 0 auto;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 1px solid var(--border-strong);
  background: var(--panel);
  font-family: var(--display);
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  color: var(--text);
}

.post-author strong {
  display: block;
  color: var(--text);
  font-size: 0.98rem;
}

.post-author span {
  display: block;
  font-size: 0.85rem;
  color: var(--text-faint);
}

.post-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2.25rem;
}

.pager-link {
  display: block;
  padding: 1rem 1.2rem;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  background: var(--panel);
  text-decoration: none;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.pager-link:hover,
.pager-link:focus-visible {
  border-color: var(--border-strong);
  background: var(--panel-hover);
}

.pager-link span {
  display: block;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 0.35rem;
}

.pager-link strong {
  display: block;
  font-size: 0.95rem;
  line-height: 1.35;
  color: var(--text);
  font-weight: 500;
}

.pager-next { text-align: right; }

@media (max-width: 620px) {
  .post-pager { grid-template-columns: 1fr; }
  .pager-next { text-align: left; }
}

/* Print ------------------------------------------------------------------ */

@media print {
  .main-nav, .read-progress, .post-toc, .post-pager,
  .bg-animation, .aurora, .noise-overlay, .stars-container,
  .code-copy, .blog-feed-link { display: none !important; }
  .post-content { max-width: none; color: #000; }
}