/* ==========================================================================
   vinayai.in — Blog Post
   Layers on top of portfolio.css. Load BOTH, in this order:

     <link rel="stylesheet" href="/css/portfolio.css">
     <link rel="stylesheet" href="/css/post.css">

   Tokens, reset, nav, footer, buttons, chips, tags and .post cards all come
   from portfolio.css. Nothing is redefined here, so the two pages cannot
   drift apart visually.
   Drop at /css/post.css
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Post-specific tokens
   -------------------------------------------------------------------------- */
:root {
  --prose:      68ch;   /* comfortable measure — do not exceed 75ch */
  --toc-w:      210px;
  --code-bg:    #101a2b;
  --code-ink:   #dbe6f5;
  --code-line:  #24334b;
}

/* Page hook — lets you target post pages specifically from either stylesheet
   without adding a second CSS file later. e.g. .page-post .nav__links { ... } */
.page-post { background: var(--bg); }

/* --------------------------------------------------------------------------
   2. Post header
   -------------------------------------------------------------------------- */
.post-head {
  padding: 46px 0 34px;
  background:
    radial-gradient(760px 340px at 82% -20%, var(--accent-soft) 0%, transparent 62%),
    linear-gradient(180deg, #fdfefe 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--line-2);
}
.post-head__inner { max-width: 820px; }

.crumb {
  display: flex; align-items: center; gap: 9px; flex-wrap: wrap;
  font-size: .84rem; color: var(--ink-3); margin-bottom: 22px;
}
.crumb a { color: var(--ink-3); font-weight: 500; }
.crumb a:hover { color: var(--accent); }
.crumb span[aria-hidden] { color: var(--line); }
.crumb__current { color: var(--ink); font-weight: 600; }

.post-head__tags { margin-bottom: 18px; }
.post-head__tags .tag { margin: 0; }

.post-head__title {
  font-size: clamp(1.75rem, 4vw, 2.65rem);
  font-weight: 800; letter-spacing: -.03em; line-height: 1.18;
  margin: 0 0 18px;
}

.post-head__lead {
  font-size: clamp(1.03rem, 1.6vw, 1.17rem);
  color: var(--ink-2); line-height: 1.62;
  max-width: 66ch; margin: 0 0 28px;
}

.post-meta {
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px; flex-wrap: wrap;
  padding-top: 22px; border-top: 1px solid var(--line);
}
.post-meta__author { display: flex; align-items: center; gap: 12px; }
.post-meta__author img {
  width: 40px; height: 40px; border-radius: 50%;
  object-fit: cover; border: 2px solid #fff; box-shadow: var(--sh-1);
}
.post-meta__name  { display: block; font-weight: 650; color: var(--ink); font-size: .93rem; }
.post-meta__role  { display: block; font-size: .82rem; color: var(--ink-3); }
.post-meta__facts {
  font-family: var(--mono); font-size: .82rem; color: var(--ink-3);
  display: flex; align-items: center; gap: 4px;
}

/* --------------------------------------------------------------------------
   3. Layout — TOC rail + article
   -------------------------------------------------------------------------- */
.post-layout {
  display: grid;
  grid-template-columns: var(--toc-w) minmax(0, 1fr);
  gap: 56px;
  align-items: start;
  padding-top: 48px;
  padding-bottom: 20px;
}

.toc {
  position: sticky; top: calc(var(--nav-h) + 28px);
  max-height: calc(100vh - var(--nav-h) - 60px);
  overflow-y: auto;
  padding-right: 8px;
  border-left: 2px solid var(--line-2);
}
.toc__label {
  font-size: .72rem; text-transform: uppercase; letter-spacing: .1em;
  font-weight: 700; color: var(--ink-3);
  margin: 0 0 12px; padding-left: 16px;
}
.toc nav { display: flex; flex-direction: column; }
.toc__link {
  position: relative;
  padding: 7px 0 7px 16px;
  font-size: .855rem; line-height: 1.45; color: var(--ink-3); font-weight: 500;
  border-left: 2px solid transparent; margin-left: -2px;
  transition: color .16s ease, border-color .16s ease;
}
.toc__link--h3 { padding-left: 28px; font-size: .81rem; }
.toc__link:hover { color: var(--accent); }
.toc__link.is-active { color: var(--accent); border-left-color: var(--accent); font-weight: 600; }

/* --------------------------------------------------------------------------
   4. Prose
   -------------------------------------------------------------------------- */
.prose { max-width: var(--prose); font-size: 1.045rem; line-height: 1.75; color: var(--ink-2); }

.prose > * + * { margin-top: 1.25em; }

.prose h2 {
  font-size: 1.52rem; letter-spacing: -.022em;
  margin: 2.1em 0 .1em; padding-top: .5em; scroll-margin-top: calc(var(--nav-h) + 22px);
}
.prose h2::before {
  content: ''; display: block; width: 38px; height: 3px;
  background: var(--accent); border-radius: 3px; margin-bottom: 16px;
}
.prose h3 {
  font-size: 1.16rem; margin: 1.8em 0 .1em;
  scroll-margin-top: calc(var(--nav-h) + 22px);
}
.prose h4 { font-size: 1.02rem; margin: 1.5em 0 .1em; }

.prose p { margin-bottom: 0; }
.prose strong { color: var(--ink); font-weight: 650; }
.prose em { color: var(--ink-2); }

.prose a {
  color: var(--accent); font-weight: 500;
  text-decoration: underline; text-decoration-color: rgba(30,111,217,.34);
  text-underline-offset: 3px; text-decoration-thickness: 1.5px;
  transition: text-decoration-color .16s ease;
}
.prose a:hover { text-decoration-color: var(--accent); }

/* Lists */
.prose ul, .prose ol { padding-left: 4px; }
.prose li { position: relative; padding-left: 26px; margin-bottom: .55em; }
.prose ul > li::before {
  content: ''; position: absolute; left: 5px; top: .66em;
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
}
.prose ol { counter-reset: n; }
.prose ol > li { counter-increment: n; }
.prose ol > li::before {
  content: counter(n) '.'; position: absolute; left: 0; top: 0;
  font-family: var(--mono); font-size: .82em; font-weight: 600; color: var(--accent);
}
.prose li > ul, .prose li > ol { margin-top: .5em; }
.prose li > ul > li::before { background: var(--line); }

/* Figures & images */
.prose figure { margin: 2em 0; }
.prose figure img,
.prose > img {
  width: 100%; border-radius: var(--r);
  border: 1px solid var(--line); box-shadow: var(--sh-1);
  background: var(--bg-tint);
}
.prose figcaption {
  margin-top: 10px; font-size: .85rem; color: var(--ink-3);
  text-align: center; font-style: italic;
}

/* Inline code */
.prose code {
  font-family: var(--mono); font-size: .855em;
  background: var(--accent-soft); color: var(--accent-700);
  padding: 2px 6px; border-radius: 5px;
  border: 1px solid rgba(30,111,217,.13);
}

/* Code blocks */
.prose pre {
  position: relative;
  background: var(--code-bg); color: var(--code-ink);
  border-radius: var(--r); border: 1px solid var(--code-line);
  padding: 22px 20px 20px; margin: 1.7em 0;
  overflow-x: auto;
  font-size: .87rem; line-height: 1.62;
  -webkit-overflow-scrolling: touch;
}
.prose pre code {
  background: none; color: inherit; border: 0; padding: 0; font-size: inherit;
}
.prose pre[data-lang]::before {
  content: attr(data-lang);
  position: absolute; top: 0; right: 0;
  font-family: var(--mono); font-size: .68rem; letter-spacing: .09em;
  text-transform: uppercase; color: #7e93b3;
  background: rgba(255,255,255,.05);
  padding: 4px 12px; border-radius: 0 var(--r) 0 var(--r-sm);
  border-left: 1px solid var(--code-line); border-bottom: 1px solid var(--code-line);
}

/* Blockquote */
.prose blockquote {
  margin: 1.8em 0; padding: 6px 0 6px 24px;
  border-left: 3px solid var(--accent);
  color: var(--ink); font-size: 1.08rem; line-height: 1.62;
}
.prose blockquote p { font-style: italic; }
.prose blockquote p:last-child { margin-bottom: 0; }

/* Tables — scroll rather than squash on mobile */
.prose table {
  width: 100%; border-collapse: collapse;
  margin: 1.8em 0; font-size: .93rem;
  display: block; overflow-x: auto; white-space: nowrap;
}
.prose thead th {
  text-align: left; font-weight: 650; color: var(--ink);
  background: var(--bg-tint);
  padding: 11px 14px; border-bottom: 2px solid var(--line);
  font-size: .84rem; text-transform: uppercase; letter-spacing: .04em;
}
.prose tbody td { padding: 11px 14px; border-bottom: 1px solid var(--line-2); }
.prose tbody tr:last-child td { border-bottom: 0; }
.prose tbody tr:hover { background: var(--bg-tint); }

.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2.4em 0; }

/* --------------------------------------------------------------------------
   5. Callouts
   -------------------------------------------------------------------------- */
.callout {
  border-radius: var(--r); padding: 18px 22px;
  margin: 1.8em 0; border-left: 4px solid;
  font-size: .97rem;
}
.callout p { margin: 0; }
.callout p + p { margin-top: .7em; }
.callout--info { background: var(--accent-soft); border-color: var(--accent); color: var(--ink-2); }
.callout--info strong { color: var(--accent-700); }
.callout--warn { background: var(--todo-soft); border-color: var(--todo); color: #6d3a10; }
.callout--warn strong { color: var(--todo); }
.callout--ok   { background: var(--live-soft); border-color: var(--live); color: #14513a; }
.callout--ok strong { color: var(--live); }

/* --------------------------------------------------------------------------
   6. Repo CTA
   -------------------------------------------------------------------------- */
.repo-cta {
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  margin: 2.4em 0 1.6em; padding: 22px 24px;
  background: var(--bg-tint); border: 1px solid var(--line);
  border-radius: var(--r-lg);
}
.repo-cta__icon {
  width: 44px; height: 44px; border-radius: 10px; flex-shrink: 0;
  background: var(--navy); color: #fff; display: grid; place-items: center;
}
.repo-cta__icon svg { width: 24px; height: 24px; fill: currentColor; }
.repo-cta__body { flex: 1 1 200px; min-width: 0; }
.repo-cta__body h3 { font-size: 1rem; margin: 0 0 3px; }
.repo-cta__body p  { margin: 0; }
.repo-cta__body code {
  background: none; border: 0; padding: 0;
  color: var(--ink-3); font-size: .88rem;
}
.prose .button-container {
  display: none;
}
.prose a.btn--primary,
.prose a.btn--primary:hover {
  color: #fff;
}
.backlink {
  font-size: .93rem; color: var(--ink-3);
  padding: 14px 18px; background: var(--accent-soft);
  border-radius: var(--r-sm); margin: 0 0 1.6em;
}

/* --------------------------------------------------------------------------
   7. Share
   -------------------------------------------------------------------------- */
.share {
  position: relative;
  display: flex; align-items: center; gap: 10px;
  padding-top: 24px; margin-top: 30px; border-top: 1px solid var(--line);
}
.share__label {
  font-size: .78rem; text-transform: uppercase; letter-spacing: .09em;
  font-weight: 700; color: var(--ink-3); margin-right: 4px;
}
.share__btn {
  width: 36px; height: 36px; border-radius: 8px;
  display: grid; place-items: center;
  background: var(--bg-chip); border: 1px solid var(--line);
  color: var(--ink-3); cursor: pointer; padding: 0;
  transition: background .16s ease, color .16s ease, border-color .16s ease, transform .16s ease;
}
.share__btn:hover {
  background: var(--accent); border-color: var(--accent);
  color: #fff; transform: translateY(-2px);
}
.share__btn svg { width: 16px; height: 16px; fill: currentColor; }
#copyLink svg { fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.share__toast {
  font-size: .8rem; font-weight: 600; color: var(--live);
  opacity: 0; transform: translateX(-6px);
  transition: opacity .2s ease, transform .2s ease;
  pointer-events: none;
}
.share__toast.is-on { opacity: 1; transform: none; }

/* --------------------------------------------------------------------------
   8. Author card
   -------------------------------------------------------------------------- */
.author {
  display: flex; gap: 24px; align-items: flex-start; flex-wrap: wrap;
  padding: 28px; border: 1px solid var(--line);
  border-radius: var(--r-lg); background: var(--bg);
  border-top: 3px solid var(--accent);
}
.author__img {
  width: 84px; height: 84px; border-radius: 14px; object-fit: cover;
  border: 3px solid #fff; box-shadow: var(--sh-2); flex-shrink: 0;
}
.author__body { flex: 1 1 320px; min-width: 0; }
.author__body h2 { font-size: 1.25rem; margin-bottom: 2px; }
.author__body h2::after { display: none; }
.author__title { color: var(--accent); font-weight: 600; font-size: .9rem; margin: 0 0 10px; }
.author__body p { font-size: .95rem; }
.author__links { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }

/* --------------------------------------------------------------------------
   9. Pager
   -------------------------------------------------------------------------- */
.pager {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 30px;
}
.pager__item {
  display: flex; flex-direction: column; gap: 6px;
  padding: 18px 22px; border-radius: var(--r);
  background: var(--bg); border: 1px solid var(--line); color: inherit;
  transition: border-color .18s ease, box-shadow .18s ease, transform .18s ease;
}
.pager__item:hover { border-color: var(--accent); box-shadow: var(--sh-2); transform: translateY(-2px); color: inherit; }
.pager__item--prev { align-items: flex-start; }
.pager__item--next { text-align: right; align-items: flex-end; }
/* If there is no previous/next post, render nothing — an empty card looks broken. */
.pager:has(> :only-child) { grid-template-columns: 1fr; }
.pager__dir {
  font-family: var(--mono); font-size: .75rem; letter-spacing: .05em;
  text-transform: uppercase; color: var(--ink-3);
}
.pager__title { font-weight: 600; color: var(--ink); font-size: .96rem; line-height: 1.4; }
.pager__item:hover .pager__title { color: var(--accent); }

/* --------------------------------------------------------------------------
   10. Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1040px) {
  .post-layout { grid-template-columns: 1fr; gap: 0; }

  /* TOC becomes a collapsible strip above the article */
  .toc {
    position: static; max-height: none; overflow: visible;
    border-left: 0; border: 1px solid var(--line);
    border-radius: var(--r); background: var(--bg-tint);
    padding: 16px 18px; margin-bottom: 30px;
  }
  .toc__label { padding-left: 0; margin-bottom: 8px; }
  .toc nav { flex-direction: row; flex-wrap: wrap; gap: 6px 18px; }
  .toc__link {
    padding: 3px 0; border-left: 0; margin-left: 0;
    border-bottom: 2px solid transparent;
  }
  .toc__link--h3 { padding-left: 0; }
  .toc__link.is-active { border-left-color: transparent; border-bottom-color: var(--accent); }

  .prose { max-width: none; }
}

@media (max-width: 720px) {
  .post-head { padding: 30px 0 26px; }
  .post-layout { padding-top: 32px; }
  .prose { font-size: 1rem; }
  .prose h2 { font-size: 1.32rem; margin-top: 1.8em; }
  .prose pre { padding: 20px 16px 16px; font-size: .82rem; border-radius: var(--r-sm); }
  .repo-cta { flex-direction: column; align-items: flex-start; }
  .repo-cta .btn { width: 100%; justify-content: center; }
  .pager { grid-template-columns: 1fr; }
  .pager__item--next { text-align: left; }
  .author { padding: 22px; gap: 18px; }
  .author__img { width: 64px; height: 64px; }
  .post-meta { flex-direction: column; align-items: flex-start; gap: 14px; }
}

/* --------------------------------------------------------------------------
   11. Print
   -------------------------------------------------------------------------- */
@media print {
  .toc, .share, .pager, .repo-cta .btn, .post-head__tags { display: none; }
  .post-layout { display: block; padding-top: 0; }
  .prose { max-width: none; font-size: 11pt; }
  .prose pre { background: #f4f6fa; color: #16202e; border-color: #ccc; }
  .prose a { color: inherit; text-decoration: none; }
  .author, .repo-cta { break-inside: avoid; }
}