/* ============================================================
   Article (single blog post) styles
   ============================================================ */

.article-head { padding-top: calc(var(--nav-h) + clamp(44px, 7vw, 80px)); padding-bottom: clamp(28px, 4vw, 44px); position: relative; overflow: hidden; }
.article-head::after {
  content: ""; position: absolute; top: -40%; left: 50%; transform: translateX(-50%);
  width: 90vw; max-width: 900px; aspect-ratio: 2/1; background: var(--accent-soft);
  filter: blur(120px); border-radius: 50%; pointer-events: none; opacity: .7;
}
.article-head .wrap { max-width: 860px; }
.article-title { font-size: clamp(1.9rem, 5vw, 3.2rem); line-height: 1.05; margin: 18px 0 20px; }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; font-family: var(--ff-mono); font-size: .78rem; color: var(--text-mute); }
.article-meta .author { display: inline-flex; align-items: center; gap: 10px; color: var(--text); }
.article-meta .avatar {
  width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; flex: none;
  background: var(--accent); color: var(--on-accent); font-family: var(--ff-display); font-weight: 700; font-size: .78rem;
}
.article-meta i { width: 3px; height: 3px; border-radius: 50%; background: var(--text-mute); display: block; }

.article-hero {
  max-width: 1040px; margin: 0 auto; border-radius: var(--r-xl); overflow: hidden;
  border: 1px solid var(--line); background: var(--surface-2); box-shadow: var(--shadow-lg);
}
/* No fixed ratio and no cover: the hero artwork carries text, so it is shown whole. */
.article-hero img { width: 100%; height: auto; display: block; }

/* Layout: article + sticky TOC */
.article-layout { display: grid; grid-template-columns: minmax(0,1fr) 260px; gap: clamp(28px, 5vw, 64px); align-items: start; max-width: 1100px; margin-inline: auto; }
.article-body { min-width: 0; max-width: 74ch; }

.toc { position: sticky; top: calc(var(--nav-h) + 28px); }
.toc h4 { font-family: var(--ff-mono); font-size: .7rem; letter-spacing: .16em; text-transform: uppercase; color: var(--text-mute); margin-bottom: 16px; font-weight: 500; }
.toc ol { display: flex; flex-direction: column; gap: 2px; border-left: 1px solid var(--line); }
.toc a {
  display: block; padding: 7px 0 7px 15px; margin-left: -1px;
  border-left: 1px solid transparent; font-size: .82rem; color: var(--text-mute); line-height: 1.45;
  transition: color .28s var(--ease), border-color .28s var(--ease);
}
.toc a:hover { color: var(--text); }
.toc a.active { color: var(--accent-text); border-left-color: var(--accent); }
.toc li.sub a { padding-left: 26px; font-size: .78rem; }
@media (max-width: 1000px) { .article-layout { grid-template-columns: 1fr } .toc { display: none } }

/* ---------- Prose ---------- */
.prose { font-size: 1.045rem; line-height: 1.82; color: var(--text-dim); }
.prose > * + * { margin-top: 1.35em; }
.prose p { text-wrap: pretty; }
.prose strong { color: var(--text); font-weight: 600; }
.prose em { color: var(--text); }

.prose h2 {
  font-size: clamp(1.45rem, 3.2vw, 1.95rem); color: var(--text);
  margin-top: 2.4em; margin-bottom: .1em; scroll-margin-top: calc(var(--nav-h) + 24px);
  padding-top: 1.1em; border-top: 1px solid var(--line); position: relative;
}
.prose h2::before {
  content: ""; position: absolute; top: -1px; left: 0; width: 46px; height: 2px; background: var(--accent);
}
.prose h2:first-child { margin-top: 0; border-top: 0; padding-top: 0; }
.prose h2:first-child::before { display: none; }
.prose h3 { font-size: clamp(1.15rem, 2.3vw, 1.35rem); color: var(--text); margin-top: 2em; margin-bottom: .1em; scroll-margin-top: calc(var(--nav-h) + 24px); }
.prose h4 { font-size: 1.02rem; color: var(--text); margin-top: 1.7em; margin-bottom: .1em; font-family: var(--ff-display); }

.prose a { color: var(--accent-text); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; text-decoration-color: var(--accent-line); transition: text-decoration-color .3s var(--ease); }
.prose a:hover { text-decoration-color: var(--accent); }

.prose ul, .prose ol { padding-left: 4px; display: flex; flex-direction: column; gap: .6em; }
.prose li { position: relative; padding-left: 26px; }
.prose ul > li::before {
  content: ""; position: absolute; left: 4px; top: .68em; width: 7px; height: 7px;
  border-radius: 2px; background: var(--accent); transform: rotate(45deg);
}
.prose ol { counter-reset: li; }
.prose ol > li { counter-increment: li; }
.prose ol > li::before {
  content: counter(li); position: absolute; left: 0; top: .05em;
  font-family: var(--ff-mono); font-size: .74rem; color: var(--accent-text);
  width: 19px; text-align: right;
}
.prose li > ul, .prose li > ol { margin-top: .55em; }
.prose li strong:first-child { color: var(--text); }

.prose blockquote {
  border-left: 2px solid var(--accent); padding: 4px 0 4px 22px; margin-left: 0;
  font-family: var(--ff-display); font-size: 1.12rem; line-height: 1.6; color: var(--text);
  letter-spacing: -.015em;
}
.prose blockquote p + p { margin-top: .6em; }

.prose img, .prose figure img {
  width: 100%; border-radius: var(--r-md); border: 1px solid var(--line); background: var(--surface-2);
}
.prose figure { margin-block: 2em; }
.prose figcaption { margin-top: 12px; font-family: var(--ff-mono); font-size: .75rem; color: var(--text-mute); text-align: center; }

.prose hr { height: 1px; background: var(--line); border: 0; margin-block: 2.6em; }

/* Inline code */
.prose :not(pre) > code {
  font-family: var(--ff-mono); font-size: .86em; padding: .16em .42em; border-radius: 6px;
  background: var(--surface-2); border: 1px solid var(--line); color: var(--accent-text);
  word-break: break-word;
}

/* Code block */
.code {
  margin-block: 1.9em; border: 1px solid var(--line); border-radius: var(--r-md);
  background: var(--bg-2); overflow: hidden;
}
.code-top {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 9px 14px; background: var(--surface-2); border-bottom: 1px solid var(--line);
}
.code-top span { font-family: var(--ff-mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--text-mute); }
.copy-btn {
  display: inline-flex; align-items: center; gap: 7px; padding: 5px 11px; border-radius: 7px;
  font-family: var(--ff-mono); font-size: .68rem; color: var(--text-mute);
  border: 1px solid var(--line); background: var(--bg); transition: all .28s var(--ease);
}
.copy-btn svg { width: 13px; height: 13px; }
.copy-btn:hover { color: var(--accent-text); border-color: var(--accent-line); }
.copy-btn.done { color: var(--accent-text); border-color: var(--accent-line); background: var(--accent-soft); }
.code pre { margin: 0; padding: 18px; overflow-x: auto; }
.code code { font-family: var(--ff-mono); font-size: .845rem; line-height: 1.75; color: var(--text); white-space: pre; }
.code pre::-webkit-scrollbar { height: 8px }
.code pre::-webkit-scrollbar-thumb { background: var(--line-2); border-radius: 8px }

/* Minimal token colors (applied by highlighter) */
.tk-c { color: var(--text-mute); font-style: italic }
.tk-s { color: var(--accent-text) }
.tk-k { color: var(--violet) }
.tk-n { color: var(--aqua) }
.tk-f { color: #ffc46b }
.tk-t { color: var(--rose) }
html[data-theme="light"] .tk-f { color: #a86300 }

/* Callouts */
.note {
  display: flex; gap: 14px; padding: 18px 20px; border-radius: var(--r-md);
  background: var(--surface); border: 1px solid var(--line); border-left: 3px solid var(--accent);
  margin-block: 1.9em; font-size: .95rem;
}
.note .ni { flex: none; font-size: 1.15rem; line-height: 1.5; }
.note b { color: var(--text); display: block; margin-bottom: 4px; font-family: var(--ff-display); }
.note p { margin: 0 !important; }
.note.warn { border-left-color: var(--rose); }
.note.tip { border-left-color: var(--aqua); }

/* Do / Don't blocks */
.dd { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-block: 1.9em; }
@media (max-width: 640px) { .dd { grid-template-columns: 1fr } }
.dd > div { padding: 16px 18px; border-radius: var(--r-md); border: 1px solid var(--line); background: var(--surface); font-size: .9rem; }
.dd .good { border-left: 3px solid var(--accent); }
.dd .bad  { border-left: 3px solid var(--rose); }
.dd b { display: flex; align-items: center; gap: 8px; font-family: var(--ff-mono); font-size: .7rem; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 10px; }
.dd .good b { color: var(--accent-text) } .dd .bad b { color: var(--rose) }
.dd code { display: block; font-family: var(--ff-mono); font-size: .84rem; color: var(--text); word-break: break-all; }
.dd p { margin: 6px 0 0; font-size: .84rem; color: var(--text-dim) }

/* Comparison table */
.table-wrap { overflow-x: auto; margin-block: 1.9em; border: 1px solid var(--line); border-radius: var(--r-md); }
.prose table { width: 100%; border-collapse: collapse; font-size: .9rem; min-width: 520px; }
.prose thead th {
  text-align: left; padding: 14px 16px; background: var(--surface-2); color: var(--text);
  font-family: var(--ff-mono); font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; font-weight: 500;
  border-bottom: 1px solid var(--line); white-space: nowrap;
}
.prose tbody td { padding: 14px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
.prose tbody tr:last-child td { border-bottom: 0; }
.prose tbody tr:hover { background: var(--surface); }
.prose tbody td:first-child { color: var(--text); font-weight: 500; }

/* Key-takeaway list */
.keys { display: grid; gap: 10px; margin-block: 1.9em; }
.keys div { display: flex; gap: 13px; padding: 15px 17px; border-radius: var(--r-md); background: var(--surface); border: 1px solid var(--line); font-size: .92rem; }
.keys span { color: var(--accent-text); font-family: var(--ff-mono); font-size: .78rem; flex: none; padding-top: 2px; }

/* Article footer */
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 44px; padding-top: 30px; border-top: 1px solid var(--line); }
.article-tags a { font-family: var(--ff-mono); font-size: .72rem; padding: 6px 12px; border-radius: var(--r-pill); border: 1px solid var(--line); color: var(--text-mute); transition: all .28s var(--ease); }
.article-tags a:hover { color: var(--accent-text); border-color: var(--accent-line); background: var(--accent-soft); }

.share { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.share span { font-family: var(--ff-mono); font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--text-mute); }

.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 48px; }
@media (max-width: 640px) { .pager { grid-template-columns: 1fr } }
.pager a {
  display: flex; flex-direction: column; gap: 7px; padding: 20px 22px; border-radius: var(--r-lg);
  border: 1px solid var(--line); background: var(--surface); transition: all .38s var(--ease-out);
}
.pager a:hover { border-color: var(--accent-line); transform: translateY(-3px); }
.pager a small { font-family: var(--ff-mono); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: var(--text-mute); }
.pager a b { font-family: var(--ff-display); font-size: .98rem; line-height: 1.35; letter-spacing: -.02em; }
.pager a.next { text-align: right; align-items: flex-end; }
.pager a.disabled { opacity: .4; pointer-events: none; }

/* Reading progress ring on mobile */
.read-bar { position: fixed; left: 0; bottom: 0; height: 3px; z-index: 90; background: linear-gradient(90deg, var(--accent), var(--aqua)); width: 0; }