/* NEXULIS blog — index cards, article reading layout, publishing chrome.
   Loaded by blog.html and every article page. Uses the site's existing
   design tokens (theme.css) so nothing here invents new colours. */

/* theme.css sets overflow-x:hidden on html+body, which makes body a scroll
   container and silently kills position:sticky inside it. clip gives the same
   horizontal-overflow protection without creating a scrollport. */
@supports (overflow:clip){html,body{overflow-x:clip}}
/* the site header is sticky inside its own mount point, which is only as tall
   as the header itself — make the mount the sticky element instead */
#nxb-nav{position:sticky;top:0;z-index:100}

/* ---------- shared shell ---------- */
.nxb-wrap{max-width:1240px;margin:0 auto;padding:0 32px}
.nxb-eyebrow{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--text-muted)}
.nxb-hero{border-bottom:1px solid var(--border-subtle);position:relative;overflow:hidden}
.nxb-hero-inner{max-width:1240px;margin:0 auto;padding:76px 32px 56px}
.nxb-hero h1{font-size:46px;line-height:1.08;letter-spacing:-.03em;font-weight:600;color:var(--text-primary);margin:16px 0 0;max-width:16ch}
.nxb-hero p{font-size:18px;line-height:1.65;color:var(--text-secondary);margin:18px 0 0;max-width:60ch}

/* ---------- filter chips ---------- */
.nxb-filters{display:flex;flex-wrap:wrap;gap:8px;padding:28px 0 0}
.nxb-chip{font:500 14px/1 var(--font-sans);color:var(--text-secondary);background:transparent;border:1px solid var(--border-default);border-radius:999px;padding:9px 16px;cursor:pointer;transition:background .18s ease,color .18s ease,border-color .18s ease}
.nxb-chip:hover{border-color:var(--border-strong);color:var(--text-primary)}
.nxb-chip[aria-pressed="true"]{background:var(--accent-soft);border-color:rgba(52,104,192,.45);color:var(--text-primary)}
.nxb-count{font-family:var(--font-mono);font-size:11px;color:var(--text-muted);margin-left:6px}

/* ---------- post cards ---------- */
.nxb-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;padding:36px 0 0}
.nxb-card{display:flex;flex-direction:column;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:14px;overflow:hidden;text-decoration:none;transition:transform .25s cubic-bezier(.16,1,.3,1),border-color .25s ease,box-shadow .25s ease}
.nxb-card:hover{transform:translateY(-4px);border-color:var(--border-strong);box-shadow:0 16px 36px rgba(0,0,0,.4)}
.nxb-cover{position:relative;aspect-ratio:16/9;background:var(--bg-inset);border-bottom:1px solid var(--border-subtle);overflow:hidden;display:grid;place-items:center}
.nxb-cover img{width:100%;height:100%;object-fit:cover;display:block}
.nxb-cover-glyph{position:absolute;inset:0;background-image:var(--grid-pattern);background-size:var(--grid-size);opacity:.5}
.nxb-cover-mark{position:relative;font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--text-muted);padding:6px 12px;border:1px solid var(--border-default);border-radius:999px;background:rgba(10,25,47,.6)}
.nxb-card-body{display:flex;flex-direction:column;gap:10px;padding:22px 22px 24px;flex:1}
.nxb-card h2,.nxb-card h3{font-size:19px;line-height:1.32;letter-spacing:-.015em;font-weight:600;color:var(--text-primary);margin:0}
.nxb-card p{font-size:14.5px;line-height:1.6;color:var(--text-secondary);margin:0}
.nxb-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.09em;text-transform:uppercase;color:var(--text-muted);margin-top:auto;padding-top:6px}
.nxb-meta .dot,.nxb-byline .dot{width:3px;height:3px;border-radius:50%;background:currentColor;opacity:.6}
.nxb-tag{font-family:var(--font-mono);font-size:10px;letter-spacing:.11em;text-transform:uppercase;color:var(--text-accent);border:1px solid rgba(52,104,192,.35);background:var(--accent-soft);border-radius:5px;padding:3px 8px;align-self:flex-start}

/* featured (first) card spans the row on desktop */
.nxb-grid .nxb-card.is-featured{grid-column:span 3;flex-direction:row}
.nxb-grid .nxb-card.is-featured .nxb-cover{aspect-ratio:auto;width:46%;border-bottom:none;border-right:1px solid var(--border-subtle)}
.nxb-grid .nxb-card.is-featured .nxb-card-body{padding:38px 40px;gap:14px;justify-content:center}
.nxb-grid .nxb-card.is-featured h3{font-size:29px;line-height:1.18;letter-spacing:-.025em}
.nxb-grid .nxb-card.is-featured p{font-size:16px}

.nxb-empty{border:1px dashed var(--border-default);border-radius:14px;padding:56px 32px;text-align:center;color:var(--text-secondary);margin:40px 0}
.nxb-empty strong{display:block;color:var(--text-primary);font-size:18px;margin-bottom:8px}

/* ---------- newsletter ---------- */
.nxb-news{border-top:1px solid var(--border-subtle);background:var(--bg-raised)}
.nxb-news-inner{max-width:1240px;margin:0 auto;padding:64px 32px;display:grid;grid-template-columns:1.1fr 1fr;gap:40px;align-items:center}
.nxb-news h2{font-size:28px;line-height:1.2;letter-spacing:-.02em;font-weight:600;color:var(--text-primary);margin:12px 0 0}
.nxb-news p{font-size:15.5px;line-height:1.6;color:var(--text-secondary);margin:12px 0 0;max-width:52ch}
.nxb-form{display:flex;gap:10px;flex-wrap:wrap}
.nxb-input{flex:1 1 240px;background:var(--bg-inset);border:1px solid var(--border-default);border-radius:9px;padding:13px 15px;color:var(--text-primary);font:400 15px/1.2 var(--font-sans)}
.nxb-input::placeholder{color:var(--text-muted)}
.nxb-input:focus{outline:none;border-color:rgba(52,104,192,.6);box-shadow:var(--ring-accent)}
.nxb-note{font-size:12.5px;color:var(--text-muted);margin:12px 0 0}

/* ---------- buttons (mirror the site's primary CTA) ---------- */
.nxb-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:700 15px/1 var(--font-sans);border-radius:9px;padding:14px 22px;text-decoration:none;cursor:pointer;border:1px solid rgba(239,85,44,.5);color:#fff;background:linear-gradient(135deg,#F3703F 0%,#EF552C 45%,#D1441F 100%);box-shadow:0 1px 0 rgba(255,255,255,.25) inset,0 10px 24px rgba(239,85,44,.3);transition:transform .15s ease,box-shadow .15s ease}
.nxb-btn:hover{color:#fff !important;transform:translateY(-1.5px);box-shadow:0 1px 0 rgba(255,255,255,.3) inset,0 14px 34px rgba(239,85,44,.4)}
.nxb-btn--ghost{background:transparent;border:1px solid var(--border-default);color:var(--text-primary);box-shadow:none;font-weight:600}
.nxb-btn--ghost:hover{border-color:var(--border-strong);background:var(--bg-inset);box-shadow:none;color:var(--text-primary) !important}

/* ---------- article page ---------- */
.nxb-progress{position:fixed;top:0;left:0;height:2px;width:0;background:var(--accent);z-index:400;transition:width .08s linear}
.nxb-crumbs{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:13px;color:var(--text-muted);padding:26px 0 0}
.nxb-crumbs a{color:var(--text-muted);text-decoration:none}
.nxb-crumbs a:hover{color:var(--text-primary) !important}
.nxb-article-head{max-width:1240px;margin:0 auto;padding:0 32px 8px}
.nxb-article-head h1{font-size:44px;line-height:1.1;letter-spacing:-.03em;font-weight:600;color:var(--text-primary);margin:18px 0 0;max-width:20ch;text-wrap:balance}
.nxb-lede{font-size:19.5px;line-height:1.6;color:var(--text-secondary);margin:20px 0 0;max-width:62ch}
.nxb-byline{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:26px 0 0;padding:0 0 34px;border-bottom:1px solid var(--border-subtle);font-family:var(--font-mono);font-size:11px;letter-spacing:.09em;text-transform:uppercase;color:var(--text-muted)}

.nxb-layout{max-width:1240px;margin:0 auto;padding:44px 32px 0;display:grid;grid-template-columns:minmax(0,1fr) 244px;gap:56px;align-items:start}
.nxb-side-col{align-self:stretch}
.nxb-side{position:sticky;top:104px;display:flex;flex-direction:column;gap:26px;max-height:calc(100vh - 132px);overflow-y:auto;scrollbar-width:thin}
.nxb-toc-title{font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--text-muted);margin-bottom:12px}
.nxb-toc{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--border-subtle)}
.nxb-toc a{font-size:13.5px;line-height:1.45;color:var(--text-muted);text-decoration:none;padding:7px 0 7px 14px;margin-left:-1px;border-left:1px solid transparent}
.nxb-toc a:hover{color:var(--text-primary) !important}
.nxb-toc a.is-active{color:var(--text-primary) !important;border-left-color:var(--accent)}
.nxb-share{display:flex;gap:8px;flex-wrap:wrap}
.nxb-share button,.nxb-share a{display:inline-flex;align-items:center;gap:7px;font:500 13px/1 var(--font-sans);color:var(--text-secondary);background:transparent;border:1px solid var(--border-default);border-radius:8px;padding:9px 12px;cursor:pointer;text-decoration:none;transition:border-color .18s ease,color .18s ease,background .18s ease}
.nxb-share button:hover,.nxb-share a:hover{border-color:var(--border-strong);color:var(--text-primary) !important;background:var(--bg-inset)}

/* takeaways */
.nxb-takeaways{border:1px solid var(--border-default);background:var(--bg-card);border-radius:14px;padding:24px 26px;margin:0 0 40px}
.nxb-takeaways .nxb-eyebrow{margin-bottom:14px;display:block}
.nxb-takeaways ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:12px}
.nxb-takeaways li{position:relative;padding-left:24px;font-size:15.5px;line-height:1.6;color:var(--text-secondary)}
.nxb-takeaways li::before{content:'';position:absolute;left:2px;top:9px;width:7px;height:7px;border-radius:2px;background:var(--accent)}

/* body typography */
.nxb-body{max-width:none;color:var(--text-secondary)}
.nxb-body>*{max-width:70ch}
.nxb-body p{font-size:18.5px;line-height:1.78;margin:0 0 1.3em;text-wrap:pretty}
.nxb-body h2{font-size:27px;line-height:1.22;letter-spacing:-.022em;font-weight:600;color:var(--text-primary);margin:2.1em 0 .6em;scroll-margin-top:112px}
.nxb-body h3{font-size:20px;line-height:1.3;letter-spacing:-.015em;font-weight:600;color:var(--text-primary);margin:1.9em 0 .5em;scroll-margin-top:112px}
.nxb-body h2:first-child,.nxb-body h3:first-child{margin-top:0}
.nxb-body strong{color:var(--text-primary);font-weight:600}
.nxb-body a{color:var(--text-accent);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.nxb-body ul,.nxb-body ol{font-size:18.5px;line-height:1.78;margin:0 0 1.4em;padding-left:1.15em}
.nxb-body li{margin:0 0 .55em}
.nxb-body li::marker{color:var(--text-accent)}
.nxb-body blockquote{margin:2em 0;padding:0;border:none}
.nxb-body blockquote p{font-family:'Cormorant Garamond',Georgia,serif;font-size:28px;line-height:1.35;font-style:italic;color:var(--text-primary);margin:0}
.nxb-body figure{margin:2.2em 0;max-width:100%}
.nxb-body img{width:100%;height:auto;display:block;border-radius:12px;border:1px solid var(--border-subtle)}
.nxb-body figcaption{font-size:13px;line-height:1.5;color:var(--text-muted);margin-top:10px}
.nxb-body hr{border:none;border-top:1px solid var(--border-subtle);margin:2.6em 0;max-width:70ch}
.nxb-body code{font-family:var(--font-mono);font-size:.86em;background:var(--bg-inset);border:1px solid var(--border-subtle);border-radius:5px;padding:2px 6px;color:var(--text-primary)}
.nxb-body pre{background:var(--bg-inset);border:1px solid var(--border-subtle);border-radius:12px;padding:20px 22px;overflow-x:auto;margin:0 0 1.6em}
.nxb-body pre code{background:none;border:none;padding:0;font-size:13.5px;line-height:1.65}
.nxb-body table{width:100%;border-collapse:collapse;margin:0 0 1.8em;font-size:15.5px}
.nxb-body th,.nxb-body td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--border-subtle)}
.nxb-body th{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--text-muted);font-weight:400}

/* end-of-post CTA + related */
.nxb-endcta{max-width:70ch;margin:56px 0 0;border:1px solid var(--border-default);background:linear-gradient(135deg,rgba(52,104,192,.12),transparent 65%),var(--bg-card);border-radius:16px;padding:34px 34px 36px}
.nxb-endcta h2{font-size:24px;line-height:1.24;letter-spacing:-.02em;font-weight:600;color:var(--text-primary);margin:12px 0 0}
.nxb-endcta p{font-size:15.5px;line-height:1.6;color:var(--text-secondary);margin:12px 0 22px;max-width:52ch}
.nxb-related{border-top:1px solid var(--border-subtle);margin-top:72px;background:var(--bg-raised)}
.nxb-related-inner{max-width:1240px;margin:0 auto;padding:64px 32px 76px}
.nxb-related h2{font-size:22px;letter-spacing:-.02em;font-weight:600;color:var(--text-primary);margin:10px 0 0}
.nxb-toast{position:fixed;left:50%;bottom:32px;transform:translateX(-50%) translateY(12px);background:var(--bg-card);border:1px solid var(--border-strong);color:var(--text-primary);font-size:14px;padding:11px 18px;border-radius:10px;box-shadow:0 12px 32px rgba(0,0,0,.45);opacity:0;pointer-events:none;transition:opacity .2s ease,transform .2s ease;z-index:500}
.nxb-toast.is-on{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .nxb-layout{grid-template-columns:minmax(0,1fr);gap:0}
  .nxb-side{position:static;flex-direction:row;flex-wrap:wrap;align-items:flex-start;gap:16px;margin:0 0 32px;max-height:none;overflow:visible}
  #nxb-toc-block{display:none}
}
@media (max-width:900px){
  .nxb-grid{grid-template-columns:repeat(2,1fr)}
  .nxb-grid .nxb-card.is-featured{grid-column:span 2;flex-direction:column}
  .nxb-grid .nxb-card.is-featured .nxb-cover{width:100%;aspect-ratio:16/9;border-right:none;border-bottom:1px solid var(--border-subtle)}
  .nxb-grid .nxb-card.is-featured .nxb-card-body{padding:26px}
  .nxb-grid .nxb-card.is-featured h3{font-size:23px}
  .nxb-news-inner{grid-template-columns:1fr;gap:24px}
}
@media (max-width:640px){
  .nxb-wrap,.nxb-hero-inner,.nxb-article-head,.nxb-layout,.nxb-news-inner,.nxb-related-inner{padding-left:20px;padding-right:20px}
  .nxb-grid{grid-template-columns:1fr}
  .nxb-grid .nxb-card.is-featured{grid-column:span 1}
  .nxb-hero h1{font-size:34px}
  .nxb-article-head h1{font-size:31px}
  .nxb-lede{font-size:17.5px}
  .nxb-body p,.nxb-body ul,.nxb-body ol{font-size:17px}
  .nxb-body h2{font-size:23px}
  .nxb-body blockquote p{font-size:24px}
  .nxb-endcta{padding:26px 22px 28px}
}
@media (prefers-reduced-motion:reduce){.nxb-card,.nxb-btn{transition:none !important}}