@charset "utf-8";
/* ===================================================================
   Xariv Engineering — stylesheet
   =================================================================== */
:root{
  --ink:#0b1020;
  --ink-soft:#3a4256;
  --muted:#6b7280;
  --line:#e8eaf0;
  --bg:#ffffff;
  --bg-soft:#f6f7fb;
  --brand:#4f46e5;        /* indigo */
  --brand-ink:#3730a3;
  --accent:#06b6d4;       /* cyan */
  --radius:16px;
  --shadow:0 1px 2px rgba(16,24,40,.04), 0 8px 24px rgba(16,24,40,.06);
  --maxw:1120px;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}

.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.85);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:baseline;gap:8px;font-family:"Space Grotesk",sans-serif;font-weight:700}
.brand-mark{
  display:inline-grid;place-items:center;width:30px;height:30px;border-radius:8px;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  color:#fff;font-size:15px;transform:translateY(4px)
}
.brand-name{font-size:20px;letter-spacing:-.02em}
.brand-sub{color:var(--muted);font-weight:500;font-size:14px}
.nav{display:flex;align-items:center;gap:22px;font-size:15px;font-weight:500}
.nav a{color:var(--ink-soft)}
.nav a:hover{color:var(--ink)}
.nav-cta{
  padding:8px 16px;border-radius:999px;
  background:var(--ink);color:#fff !important;
}
.nav-cta:hover{background:var(--brand)}

/* ---------- Hero ---------- */
.hero{
  background:
    radial-gradient(1200px 400px at 80% -10%, rgba(79,70,229,.10), transparent),
    radial-gradient(900px 360px at 0% -20%, rgba(6,182,212,.10), transparent),
    var(--bg-soft);
  border-bottom:1px solid var(--line);
  padding:72px 0 56px;
}
.hero h1{
  font-family:"Space Grotesk",sans-serif;
  font-size:clamp(34px,5vw,52px);
  line-height:1.08;letter-spacing:-.03em;margin:0 0 14px;
}
.hero p{font-size:clamp(16px,2.2vw,20px);color:var(--ink-soft);max-width:620px;margin:0}

/* ---------- Feed / chips ---------- */
.feed{padding:40px 24px 80px}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.chip{
  border:1px solid var(--line);background:#fff;color:var(--ink-soft);
  padding:8px 16px;border-radius:999px;font-size:14px;font-weight:500;
  cursor:pointer;transition:.15s;font-family:inherit;
}
.chip:hover{border-color:var(--brand);color:var(--brand)}
.chip.is-active{background:var(--ink);color:#fff;border-color:var(--ink)}

/* ---------- Cards ---------- */
.cards{
  display:grid;gap:28px;
  grid-template-columns:repeat(auto-fill,minmax(330px,1fr));
}
.card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:.18s;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#dcdfeb}
.card-media{height:180px;background-size:cover;background-position:center}
.card-media--blank{
  background:linear-gradient(135deg,#eef0fb,#e6f7fb);
  position:relative;
}
.card-media--blank::after{
  content:"✕";position:absolute;inset:0;display:grid;place-items:center;
  font-size:48px;color:rgba(79,70,229,.25);font-family:"Space Grotesk",sans-serif;
}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-cat{
  align-self:flex-start;font-size:12px;font-weight:600;letter-spacing:.04em;
  text-transform:uppercase;color:var(--brand);
}
.card-title{font-size:20px;line-height:1.3;margin:0;letter-spacing:-.01em}
.card-excerpt{color:var(--muted);font-size:15px;margin:0;flex:1}
.card-meta{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-top:6px}
.meta-dot{opacity:.5}

/* ---------- Post page ---------- */
.post-head{max-width:760px;padding-top:48px}
.back-link{color:var(--brand);font-weight:500;font-size:15px}
.back-link:hover{text-decoration:underline}
.eyebrow{
  display:inline-block;margin:22px 0 6px;font-size:13px;font-weight:600;
  letter-spacing:.05em;text-transform:uppercase;color:var(--brand);
}
.post-title{
  font-family:"Space Grotesk",sans-serif;
  font-size:clamp(30px,4.5vw,46px);line-height:1.12;letter-spacing:-.02em;
  margin:6px 0 14px;
}
.post-lede{font-size:20px;color:var(--ink-soft);margin:0 0 18px}
.post-meta{display:flex;align-items:center;gap:8px;color:var(--muted);font-size:15px}
.meta-author{color:var(--ink);font-weight:600}
.post-hero{
  max-width:920px;margin:36px auto 0;width:100%;height:auto;
  border-radius:var(--radius);border:1px solid var(--line);
}

/* ---------- Article body typography ---------- */
.post-body{max-width:760px;padding-top:36px;padding-bottom:24px;font-size:18px;color:#1f2533}
.post-body h2{font-family:"Space Grotesk",sans-serif;font-size:28px;letter-spacing:-.01em;margin:44px 0 14px}
.post-body h3{font-size:22px;margin:34px 0 10px}
.post-body p{margin:0 0 20px}
.post-body ul,.post-body ol{margin:0 0 20px;padding-left:24px}
.post-body li{margin:6px 0}
.post-body a{color:var(--brand);text-decoration:underline;text-underline-offset:2px}
.post-body img{border-radius:12px;margin:24px 0;border:1px solid var(--line)}
.post-body blockquote{
  margin:24px 0;padding:4px 20px;border-left:3px solid var(--brand);
  color:var(--ink-soft);background:var(--bg-soft);border-radius:0 8px 8px 0;
}
.post-body code{
  font-family:"SF Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  background:var(--bg-soft);padding:2px 6px;border-radius:6px;font-size:.88em;
  border:1px solid var(--line);
}
.post-body pre{
  background:#0b1020;color:#e6e9f5;padding:18px 20px;border-radius:12px;
  overflow:auto;margin:24px 0;font-size:14.5px;line-height:1.6;
}
.post-body pre code{background:none;border:none;padding:0;color:inherit}
.post-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:16px}
.post-body th,.post-body td{border:1px solid var(--line);padding:10px 14px;text-align:left}
.post-body th{background:var(--bg-soft)}
.post-foot{max-width:760px;padding:8px 24px 80px}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-soft);border-top:1px solid var(--line);margin-top:40px}
.footer-inner{padding:48px 24px;display:grid;gap:18px}
.footer-brand{display:flex;align-items:center;gap:8px;font-size:18px}
.footer-brand p{flex-basis:100%;margin:6px 0 0;color:var(--muted);font-size:14px}
.footer-links{display:flex;flex-wrap:wrap;gap:22px;font-size:15px;color:var(--ink-soft)}
.footer-links a:hover{color:var(--brand)}
.copyright{color:var(--muted);font-size:14px;margin:0}

/* ---------- Responsive ---------- */
@media (max-width:640px){
  .nav{gap:14px;font-size:14px}
  .brand-sub{display:none}
  .hero{padding:52px 0 40px}
}