/* ==========================================================================
   Dium blog  ·  /blog/theme.css
   Blog-only rules. Load AFTER /cdn/css/site.css and /cdn/css/icons.css,
   which carry the fonts, tokens, header, footer, buttons, cards, chips,
   search, crumbs, TOC, prose and reading-progress styles.
   Uses site tokens only (--bg, --ink, --accent, --line, --r-lg ...).
   The second half keeps every class older generated posts use working.
   ========================================================================== */

/* legacy token aliases (older post markup and inline styles reference these) */
:root{
  --hairline:var(--line);--hairline-soft:var(--line);
  --surface-2:var(--bg-alt);--surface-3:var(--bg-alt);--bg-tint:var(--bg-alt);
  --ink-soft:var(--ink-2);--dim:var(--ink-3);--muted:var(--ink-3);
  --accent-ink:var(--accent);--accent-glow:var(--accent-soft);
  --display:var(--font-serif);--body:var(--font-sans);--mono:var(--font-mono);
  --r-sm:8px;--r-xl:var(--r-lg);
  --pastel-lavender:var(--accent-soft);--pastel-lavender-ink:var(--accent);
  --pastel-mint:var(--accent-soft);--pastel-mint-ink:var(--accent);
  --pastel-peach:var(--accent-soft);--pastel-peach-ink:var(--accent);
  --pastel-blush:var(--accent-soft);--pastel-blush-ink:var(--accent);
  --pastel-butter:var(--accent-soft);--pastel-butter-ink:var(--accent);
  --pastel-sky:var(--accent-soft);--pastel-sky-ink:var(--accent);
  --pastel-sage:var(--accent-soft);--pastel-sage-ink:var(--accent);
}

/* ---------- blog index ---------- */
.blog-hero{padding:clamp(3rem,2rem + 3vw,5rem) 0 clamp(1.5rem,1rem + 1.5vw,2.5rem)}
.blog-hero .lead{margin-top:1rem}
.blog-tools{display:grid;gap:1rem;margin-top:2rem}
.blog-tools .search{max-width:520px}
.blog-count{font-size:.84rem;color:var(--ink-3)}

.post-featured{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:clamp(1.5rem,1rem + 3vw,4rem);padding:clamp(1.75rem,1.2rem + 2vw,3rem);align-items:end}
.post-featured h2{font-family:var(--font-serif);font-weight:400;font-size:clamp(1.8rem,1.3rem + 1.8vw,2.7rem);line-height:1.12;letter-spacing:-.03em}
.post-featured h2 a:hover{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px}
.post-featured p{font-size:1.02rem;color:var(--ink-2);line-height:1.6}
.post-featured__side{display:grid;gap:1rem;align-content:end}
@media (max-width:860px){.post-featured{grid-template-columns:1fr;align-items:start}}

.post-grid{display:grid;gap:1.25rem;grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:1024px){.post-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:640px){.post-grid{grid-template-columns:1fr}}
.post-card{padding:1.5rem;gap:.7rem}
.post-grid.is-collapsed>[data-more]{display:none}
.post-card h3{font-size:1.22rem}
.post-card h3 a::after{content:"";position:absolute;inset:0;border-radius:inherit}
.post-card h3 a:focus-visible{outline:none}
.post-card:focus-within{outline:2px solid var(--brand);outline-offset:3px}
.post-card p{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-card__meta,.post-meta{display:flex;flex-wrap:wrap;gap:.35rem .9rem;font-size:.8rem;color:var(--ink-3)}
.post-card__meta{margin-top:auto;padding-top:.6rem}
.post-card .card__tag{position:relative;z-index:1;align-self:flex-start}

.cat-list{display:grid;gap:0;border-top:1px solid var(--line)}
.cat-list a{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:1rem;align-items:baseline;padding:1.2rem 0;border-bottom:1px solid var(--line)}
.cat-list strong{font-family:var(--font-serif);font-weight:400;font-size:1.25rem;letter-spacing:-.02em}
.cat-list span{display:block;font-size:.9rem;color:var(--ink-2);margin-top:.2rem}
.cat-list small{font-size:.8rem;color:var(--ink-3);white-space:nowrap}
.cat-list a:hover strong{color:var(--accent)}

.chip[aria-current=page]{background:var(--ink);color:#fff;border-color:var(--ink)}

/* newsletter + closing CTA */
.newsletter-cta{display:grid;grid-template-columns:minmax(0,1.4fr) auto;gap:1.5rem 3rem;align-items:center;padding:clamp(1.75rem,1.2rem + 2vw,2.75rem)}
.newsletter-cta h2{font-family:var(--font-serif);font-weight:400;font-size:clamp(1.5rem,1.2rem + 1vw,2rem);line-height:1.2;letter-spacing:-.025em}
.newsletter-cta p{margin-top:.5rem}
@media (max-width:767px){.newsletter-cta{grid-template-columns:1fr}}

/* ---------- post page ---------- */
.post-head{padding:clamp(2.5rem,2rem + 2.5vw,4.5rem) 0 clamp(1.5rem,1rem + 1.5vw,2.5rem);border-bottom:1px solid var(--line)}
.post-head h1{max-width:24ch;overflow-wrap:break-word;hyphens:auto}
.post-head .lead{margin-top:1.1rem;max-width:62ch}
.post-head .card__tag{display:inline-block;margin-bottom:1rem}
.byline{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem 1.25rem;margin-top:1.75rem;font-size:.88rem;color:var(--ink-2)}
.byline__who{display:flex;align-items:center;gap:.65rem}
.byline__who img{width:36px;height:36px;border-radius:8px;border:1px solid var(--line);background:var(--surface)}
.byline__who a{color:var(--ink);font-weight:400;text-decoration:underline;text-decoration-color:var(--line-2);text-underline-offset:3px}
.byline__who a:hover{text-decoration-color:var(--ink)}
.byline .post-meta{font-size:.84rem}

.post-body{padding:clamp(2rem,1.5rem + 2vw,3.5rem) 0 clamp(3rem,2rem + 3vw,5rem)}
.post-body .toc details>summary{list-style:none}
.post-body .toc details>summary::-webkit-details-marker{display:none}
@media (min-width:1001px){.post-body .toc summary{font-family:var(--font-sans);font-size:.72rem;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);margin-bottom:.75rem;cursor:default;pointer-events:none}}
@media (max-width:1000px){
  .post-body .toc{margin-bottom:1.5rem}
  .post-body .toc summary{display:flex;justify-content:space-between;align-items:center;font-size:.9rem}
  .post-body .toc summary::after{content:"+";font-size:1.1rem;color:var(--ink-3)}
  .post-body .toc details[open] summary::after{content:"\2212"}
  .post-body .toc details[open] summary{margin-bottom:.5rem}
}

/* answer-first summary (tldr block) */
.tldr{padding:1.25rem 1.4rem;border-radius:var(--r-lg);background:linear-gradient(160deg,rgba(0,163,255,.07),rgba(0,163,255,.015) 60%),var(--surface);border:1px solid rgba(0,163,255,.18);font-size:1rem;line-height:1.65;color:var(--ink)}
.tldr__label,.tldr h4{display:block;font-family:var(--font-sans);font-size:.72rem!important;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin:0 0 .45rem!important}
.prose .tldr+*{margin-top:2rem}

/* callouts: one treatment for every legacy colour (one accent rule) */
.callout{margin:2rem 0;padding:1.3rem 1.5rem;border-radius:var(--r-lg);background:var(--bg-alt);border:1px solid var(--line);font-family:var(--font-serif);font-size:1.28rem;line-height:1.42;letter-spacing:-.015em;color:var(--ink)}
.callout strong{font-weight:500}
.prose .callout{margin-top:2rem}

/* tables, code, rules inside posts */
.prose .table-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);margin-top:1.5rem}
.prose table{width:100%;border-collapse:collapse;font-size:.88rem;line-height:1.55}
.prose .table-scroll table{min-width:560px}
.prose th,.prose td{text-align:left;padding:.8rem 1rem;vertical-align:top}
.prose thead th{font-weight:500;font-size:.8rem;color:var(--ink-2);background:var(--bg);border-bottom:1px solid var(--line)}
.prose tbody tr+tr td{border-top:1px solid var(--line)}
.prose td{color:var(--ink-2)}
.prose pre{background:#131312;color:#E9E7E1;border-radius:var(--r-md);padding:1.1rem 1.25rem;overflow-x:auto;font-family:var(--font-mono);font-size:.82rem;line-height:1.65;margin-top:1.5rem}
.prose pre code{background:none;border:0;padding:0;font-size:inherit;color:inherit;white-space:pre}
.prose hr{width:80px;margin:2.5rem auto}
.prose blockquote{font-family:var(--font-serif);font-size:1.3rem;line-height:1.45;color:var(--ink)}
.prose h2 a,.prose h3 a{text-decoration:none;color:inherit}
.prose p code,.prose li code,.prose td code{word-break:break-word}

/* decision-tree cards (dt blocks) */
.dt-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.4rem 1.5rem;margin-top:1.5rem}
.dt-q{font-family:var(--font-serif);font-size:1.25rem;line-height:1.3;letter-spacing:-.015em;color:var(--ink);margin-bottom:.8rem}
.dt-options{display:flex;flex-wrap:wrap;gap:.5rem}
.dt-pill{display:inline-flex;align-items:center;gap:.35rem;padding:.45rem .85rem;border-radius:var(--r-pill);background:var(--bg-alt);border:1px solid var(--line);font-family:var(--font-sans);font-size:.84rem;color:var(--ink-2)}
.dt-pill--on{background:var(--accent-soft);color:var(--accent);border-color:transparent}
.dt-note{margin-top:.9rem;font-size:.9rem;color:var(--ink-2)}

/* post CTA, author box, related */
.post-cta{margin-top:3rem;padding:clamp(1.5rem,1.2rem + 1.5vw,2.25rem)}
.post-cta h2{font-family:var(--font-serif)!important;font-size:1.6rem!important;margin-top:0!important;line-height:1.2}
.post-cta p{color:var(--ink-2);font-size:.98rem}
.post-cta .btn-row{margin-top:.75rem}
.prose .post-cta a.btn{text-decoration:none}
.prose .post-cta a.btn--primary{color:#fff}
.prose .post-cta a.btn--secondary{color:var(--ink)}

.author-box{display:grid;grid-template-columns:56px minmax(0,1fr);gap:1.1rem;align-items:start;margin-top:2.5rem;padding:1.5rem}
.author-box img{width:56px;height:56px;border-radius:12px;border:1px solid var(--line);background:var(--surface)}
.author-box h2{font-family:var(--font-serif)!important;font-size:1.2rem!important;margin:0!important;line-height:1.3}
.author-box p{margin-top:.35rem!important}
.prose .author-box a.link{font-size:.9rem}

.related-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:1rem;margin-bottom:1.75rem}

/* archive pages */
.archive-meta{display:flex;flex-wrap:wrap;gap:.5rem 1.25rem;margin-top:1.25rem;font-size:.84rem;color:var(--ink-3)}
.post-rows{border-top:1px solid var(--line)}
.post-rows li{list-style:none;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:1rem;align-items:baseline;padding:1rem 0;border-bottom:1px solid var(--line)}
.post-rows a{font-family:var(--font-serif);font-size:1.12rem;letter-spacing:-.015em;line-height:1.35}
.post-rows a:hover{color:var(--accent)}
.post-rows small{font-size:.8rem;color:var(--ink-3);white-space:nowrap}
.post-rows .card__tag{display:block;margin-bottom:.2rem}
@media (max-width:640px){.post-rows li{grid-template-columns:1fr;gap:.3rem}}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:1.25rem}
.facts div{border-top:1px solid var(--line-2);padding-top:.8rem}
.facts strong{display:block;font-family:var(--font-serif);font-weight:400;font-size:2rem;line-height:1.1;letter-spacing:-.03em}
.facts span{font-size:.86rem;color:var(--ink-2)}

/* ==========================================================================
   Legacy classes (older generated posts, cached copies, internal pages).
   Restyled onto the new tokens so nothing renders broken.
   ========================================================================== */
.tag{display:inline-flex;align-items:center;gap:.3rem;padding:.3rem .65rem;border-radius:var(--r-pill);font-size:.7rem;font-weight:500;letter-spacing:.08em;text-transform:uppercase;background:var(--accent-soft);color:var(--accent);font-family:var(--font-sans)}
.tag-p1,.tag-p2,.tag-p3,.tag-p4,.tag-p5,.tag-p6{background:var(--accent-soft);color:var(--accent)}
.tag-quiet{background:var(--bg-alt);color:var(--ink-3)}
.tag-pill{font-size:.7rem;font-weight:500;letter-spacing:.08em;text-transform:uppercase;padding:.3rem .65rem;border-radius:var(--r-pill);background:var(--accent-soft);color:var(--accent)}
.chip.is-active{background:var(--ink);color:#fff;border-color:var(--ink)}
.pillar-row{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1.5rem}
.search-wrap{position:relative;max-width:560px}
.search-input{width:100%;padding:.95rem 1rem .95rem 2.75rem;border-radius:var(--r-pill);border:1px solid var(--line-2);background:var(--surface);font-size:.98rem}
.search-input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px var(--accent-soft)}
.search-icon{position:absolute;left:1rem;top:50%;transform:translateY(-50%);color:var(--ink-3);pointer-events:none}
.search-icon svg{width:18px;height:18px}
.search-status{font-size:.84rem;color:var(--ink-3);margin-top:.8rem}
.section-title{font-family:var(--font-serif);font-weight:400;font-size:clamp(1.7rem,1.3rem + 1.7vw,2.4rem);letter-spacing:-.03em}
.section-meta{font-size:.84rem;color:var(--ink-3)}
.empty-state{padding:2.5rem;text-align:center;border:1px dashed var(--line-2);border-radius:var(--r-lg);color:var(--ink-2)}
.featured-card{display:grid;grid-template-columns:1.1fr 1fr;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden}
.featured-cover,.card-cover,.article-cover{background:var(--bg-alt) center/cover no-repeat}
.featured-cover{min-height:320px}
.card-cover{aspect-ratio:1200/830}
.article-cover{aspect-ratio:1200/500;max-height:420px}
.featured-body{padding:2rem;display:flex;flex-direction:column;justify-content:center;gap:.75rem}
.featured-title,.card-title{font-family:var(--font-serif);font-weight:400;letter-spacing:-.02em;line-height:1.2;color:var(--ink)}
.featured-title{font-size:clamp(1.7rem,1.3rem + 1.5vw,2.4rem)}
.card-title{font-size:1.25rem}
.featured-excerpt,.card-excerpt{font-size:.92rem;color:var(--ink-2)}
.featured-meta,.card-meta{display:flex;gap:.6rem;flex-wrap:wrap;font-size:.8rem;color:var(--ink-3)}
.card-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-3);align-self:center}
.card-body{padding:1.4rem;display:flex;flex-direction:column;gap:.6rem;flex:1}
.card:has(>.card-cover){padding:0;overflow:hidden}
@media (max-width:820px){.featured-card{grid-template-columns:1fr}.featured-cover{min-height:200px}}
.article-head{max-width:var(--max-prose);margin:0 auto;padding:3rem 0 2rem}
.article-head h1{font-family:var(--font-serif);font-weight:400;font-size:clamp(2.1rem,1.5rem + 2.6vw,3.2rem);line-height:1.1;letter-spacing:-.03em;margin:.75rem 0 1rem}
.article-head .breadcrumb{font-size:.8rem;color:var(--ink-3);margin-bottom:1rem}
.deck{font-size:1.15rem;color:var(--ink-2);line-height:1.55}
.article-byline{display:flex;align-items:center;gap:.8rem;margin-top:1.5rem;padding-top:1.1rem;border-top:1px solid var(--line);font-size:.88rem;color:var(--ink-2)}
.byline-avatar{width:36px;height:36px;border-radius:50%;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);font-family:var(--font-serif)}
.layout-2col{max-width:calc(var(--max) + var(--gutter)*2);margin:0 auto;padding:0 var(--gutter);display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:clamp(2rem,1rem + 3vw,4rem)}
.article-main{min-width:0}
.article-aside{position:sticky;top:calc(var(--nav-h) + 1.5rem);align-self:start;padding-top:3rem}
@media (max-width:1024px){.layout-2col{grid-template-columns:1fr}.article-aside{position:static;padding-top:0}}
.aside-block{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:1.1rem 1.25rem;margin-bottom:1rem}
.aside-block[class*=tinted-]{background:var(--bg-alt)}
.aside-eyebrow{font-size:.7rem;font-weight:500;letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3);margin-bottom:.6rem}
.aside-title{font-family:var(--font-serif);font-size:1.2rem;line-height:1.25}
.aside-text,.aside-list li{font-size:.88rem;color:var(--ink-2);line-height:1.55}
.aside-list{list-style:none}
.aside-list li{padding:.3rem 0}
.aside-stats{display:grid;grid-template-columns:1fr 1fr;gap:.6rem}
.aside-stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:.6rem;text-align:center}
.aside-stat-num{font-family:var(--font-serif);font-size:1.15rem}
.aside-stat-label{font-size:.72rem;color:var(--ink-3)}
.aside-cta,.article-cta .btn{display:inline-flex;align-items:center;gap:.4rem;background:var(--ink);color:#fff;padding:.7rem 1.1rem;border-radius:var(--r-pill);font-size:.86rem}
.aside-related-link{display:block;font-size:.86rem;color:var(--ink-2);padding:.6rem 0;border-top:1px solid var(--line)}
.aside-related-link:first-of-type{border-top:0}
.aside-related-link strong{display:block;color:var(--ink);font-weight:500}
.article-cta{margin:3rem 0;padding:2rem;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--bg-alt);text-align:center}
.article-cta h3,.related h3{font-family:var(--font-serif);font-weight:400;font-size:1.6rem;margin-bottom:.6rem}
.related{padding:0 0 4rem}
.site-bar,.site-bar-inner{max-width:none}
.brand-mark{display:none}