/* ───────────────────────────────────────────────────────
   marketing-page.css — shared chrome for Nuvex content pages
   Used by: /about, /how-to-*, /app-store-screenshot-sizes,
   /google-play-*, /aso-guide, /glossary, /use-cases/*, /vs/*,
   /alternatives, /examples, and future long-form pages.

   Depends on tokens from /assets/css/design-system.css.
   ─────────────────────────────────────────────────────── */

/* ─── Base ─────────────────────────────────────────── */
body{
  background:var(--paper);color:var(--ink);
  font-family:var(--font-body);letter-spacing:-.005em;line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
::selection{background:var(--lav-mist);color:var(--lav-deep)}
a{color:inherit;text-decoration:none}

/* ─── Top nav ──────────────────────────────────────── */
.nav{
  position:sticky;top:0;z-index:50;
  display:flex;align-items:center;gap:16px;
  padding:14px clamp(20px,4vw,48px);
  background:color-mix(in srgb,var(--paper) 80%,transparent);
  -webkit-backdrop-filter:saturate(140%) blur(14px);
          backdrop-filter:saturate(140%) blur(14px);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease);
}
.nav.stuck{border-bottom-color:var(--line)}
.nav-brand{
  font-family:var(--font-body);font-size:22px;font-weight:800;
  letter-spacing:-.04em;color:var(--ink);text-decoration:none;
}
.nav-brand .dot{color:var(--lav)}
.nav-mid{margin-left:24px;display:flex;gap:18px}
.nav-mid a{
  font-size:13.5px;font-weight:500;color:var(--ink-mute);
  transition:color .2s;text-decoration:none;
}
.nav-mid a:hover{color:var(--ink)}
.nav-r{margin-left:auto;display:flex;align-items:center;gap:8px}
@media(max-width:640px){.nav-mid{display:none}}

/* ─── Buttons ──────────────────────────────────────── */
.btn-ink{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 18px;background:var(--ink);
  color:var(--paper-warm)!important;font-size:14px;font-weight:600;
  border-radius:10px;text-decoration:none;
  transition:transform .15s ease, background .2s;
}
.btn-ink:hover{background:var(--lav-deep);transform:translateY(-1px)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 18px;background:transparent;
  color:var(--ink)!important;font-size:14px;font-weight:600;
  border-radius:10px;text-decoration:none;
  border:1px solid var(--line-strong);transition:border-color .2s;
}
.btn-ghost:hover{border-color:var(--ink)}

/* ─── Page header ──────────────────────────────────── */
.page-head{max-width:820px;margin:0 auto;padding:72px clamp(20px,4vw,48px) 28px}
.page-head.wide{max-width:1080px}
.page-head.tight{max-width:720px;padding-top:56px}
.page-eyebrow{
  display:inline-block;font-family:var(--font-body);font-weight:700;
  font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--lav-deep);margin-bottom:16px;
}
.page-h1{
  font-family:var(--font-body);font-weight:700;
  font-size:clamp(38px,5.2vw,56px);letter-spacing:-.04em;line-height:1.05;
  color:var(--ink);margin-bottom:16px;
}
.page-h1 em{
  font-family:var(--font-display);font-style:italic;font-weight:500;
  color:var(--lav-deep);letter-spacing:-.02em;
}
.page-h1 .lav-dot{color:var(--lav)}
.page-lead{
  font-size:18px;color:var(--ink-soft);line-height:1.6;max-width:680px;
}
.page-meta{
  font-size:13px;color:var(--ink-soft);font-weight:500;
  display:inline-flex;align-items:center;gap:8px;margin-top:4px;
}
.page-meta::before{
  content:'';width:6px;height:6px;border-radius:50%;
  background:var(--lav);opacity:.7;
}

/* ─── Main content (long-form article) ─────────────── */
.content{max-width:820px;margin:0 auto;padding:32px clamp(20px,4vw,48px) 100px}
.content.wide{max-width:1080px}
.content.tight{max-width:720px}
.content h2{
  font-family:var(--font-body);font-weight:700;
  font-size:22px;letter-spacing:-.02em;color:var(--ink);margin:56px 0 14px;
}
.content h2:first-child{margin-top:0}
.content h3{
  font-family:var(--font-body);font-weight:700;font-size:16px;
  color:var(--ink);margin:32px 0 8px;
}
.content h4{
  font-family:var(--font-body);font-weight:700;font-size:14px;
  color:var(--ink);margin:22px 0 6px;
}
.content p{
  font-size:15.5px;color:var(--ink-mute);margin-bottom:16px;line-height:1.75;
}
.content ul,.content ol{
  margin:4px 0 18px 22px;font-size:15.5px;color:var(--ink-mute);line-height:1.75;
}
.content li{margin-bottom:8px}
.content strong,.content b{color:var(--ink);font-weight:700}
.content a{
  color:var(--lav-deep);text-decoration:underline;
  text-underline-offset:3px;text-decoration-thickness:1px;
  transition:color .2s;
}
.content a:hover{color:var(--ink)}
.content code{
  font-family:ui-monospace,'SF Mono',Monaco,'Cascadia Mono','Roboto Mono',monospace;
  font-size:13px;background:var(--paper-deep);color:var(--ink-soft);
  padding:2px 6px;border-radius:5px;
}
.content hr{
  border:0;border-top:1px solid var(--line);margin:40px 0;
}

/* ─── Tables ───────────────────────────────────────── */
.content table{
  width:100%;border-collapse:collapse;margin:18px 0 22px;
  font-size:13.5px;background:var(--paper-warm);
  border:1px solid var(--line-strong);border-radius:12px;overflow:hidden;
}
.content th,.content td{
  text-align:left;padding:11px 14px;border-bottom:1px solid var(--line);
  color:var(--ink-mute);vertical-align:top;
}
.content th{
  font-weight:700;color:var(--ink);font-size:11.5px;
  letter-spacing:.06em;text-transform:uppercase;background:var(--paper-deep);
}
.content tr:last-child td{border-bottom:0}

/* ─── Pull quote ───────────────────────────────────── */
.pull{
  margin:28px 0;padding:24px 28px;border-left:3px solid var(--lav);
  background:var(--paper-warm);border-radius:0 10px 10px 0;
  font-family:var(--font-display);font-style:italic;font-weight:500;
  font-size:19px;color:var(--ink-soft);line-height:1.55;letter-spacing:-.01em;
}

/* ─── Callout boxes ────────────────────────────────── */
.callout{
  margin:24px 0;padding:18px 20px;background:var(--paper-warm);
  border:1px solid var(--line);border-radius:12px;font-size:14.5px;
}
.callout-label{
  display:block;font-size:11px;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;color:var(--lav-deep);margin-bottom:6px;
}
.callout--tip{border-left:3px solid var(--lav)}
.callout--warn{border-left:3px solid #d4803a}
.callout--warn .callout-label{color:#a85e1c}

/* ─── Stat grid ────────────────────────────────────── */
.stat-row{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));
  gap:16px;margin:28px 0 8px;
}
.stat{
  padding:20px;background:var(--paper-warm);
  border:1px solid var(--line);border-radius:14px;
}
.stat-n{
  font-family:var(--font-display);font-size:32px;font-weight:500;
  color:var(--ink);letter-spacing:-.02em;line-height:1;
}
.stat-l{font-size:12px;color:var(--ink-mute);margin-top:6px;font-weight:500}

/* ─── TOC ──────────────────────────────────────────── */
.toc{
  padding:18px 22px;margin:10px 0 32px;
  background:var(--paper-warm);border:1px solid var(--line);
  border-radius:14px;
}
.toc-label{
  display:block;font-size:11px;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-mute);margin-bottom:10px;
}
.toc ol{margin:0 0 0 18px;font-size:14px;line-height:1.9;color:var(--ink-soft)}
.toc a{color:var(--ink-soft);text-decoration:none;transition:color .2s}
.toc a:hover{color:var(--lav-deep)}

/* ─── Comparison table (feature-check matrix) ──────── */
.cmp{
  width:100%;border-collapse:collapse;margin:18px 0 28px;
  font-size:13.5px;background:var(--paper-warm);
  border:1px solid var(--line-strong);border-radius:12px;overflow:hidden;
}
.cmp th,.cmp td{
  text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);
  color:var(--ink-mute);
}
.cmp th{
  font-weight:700;color:var(--ink);font-size:11.5px;
  letter-spacing:.06em;text-transform:uppercase;background:var(--paper-deep);
}
.cmp .yes{color:#2e7d32;font-weight:700}
.cmp .no{color:var(--ink-faint)}
.cmp .maybe{color:#b87f2d;font-weight:600}
.cmp td.col-us{background:color-mix(in srgb,var(--lav-mist) 40%,transparent)}

/* ─── CTA card ─────────────────────────────────────── */
.cta{
  margin:64px 0 0;padding:32px;background:var(--paper-warm);
  border:1px solid var(--line);border-radius:16px;text-align:center;
}
.cta h3{
  font-family:var(--font-display);font-style:italic;font-weight:500;
  font-size:28px;color:var(--ink);letter-spacing:-.02em;margin:0 0 8px;
}
.cta p{font-size:15px;color:var(--ink-mute);margin:0 0 18px}
.cta-btns{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}

/* ─── Card grid (use-cases, examples, comparison list) ── */
.grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:18px;margin:28px 0 12px;
}
.card{
  padding:24px;background:var(--paper-warm);border:1px solid var(--line);
  border-radius:14px;transition:border-color .2s, transform .2s;
  text-decoration:none;color:inherit;display:block;
}
.card:hover{border-color:var(--lav);transform:translateY(-2px)}
.card h3{
  font-family:var(--font-body);font-weight:700;font-size:17px;
  color:var(--ink);margin:0 0 8px;letter-spacing:-.015em;
}
.card p{font-size:14px;color:var(--ink-mute);margin:0;line-height:1.55}
.card .arr{
  display:inline-block;margin-top:10px;font-size:13px;
  font-weight:600;color:var(--lav-deep);
}

/* ─── Stack list (tech stack style) ────────────────── */
.stack-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:12px;margin:16px 0 20px;
}
.stack-row{
  padding:14px 16px;background:var(--paper-warm);
  border:1px solid var(--line);border-radius:10px;
}
.stack-row b{color:var(--ink);font-weight:700;font-size:13px;display:block;margin-bottom:2px}
.stack-row span{font-size:12.5px;color:var(--ink-mute)}

/* ─── Footer ───────────────────────────────────────── */
.foot{
  border-top:1px solid var(--line);padding:22px clamp(20px,4vw,48px);
  background:var(--paper-warm);
}
.foot-inner{
  max-width:1180px;margin:0 auto;display:flex;flex-wrap:wrap;
  align-items:center;justify-content:space-between;gap:16px;
}
.foot-brand{
  font-size:15px;font-weight:800;letter-spacing:-.03em;
  color:var(--ink);text-decoration:none;
}
.foot-brand .dot{color:var(--lav)}
.foot-nav{display:flex;flex-wrap:wrap;gap:18px}
.foot-nav a{font-size:13px;color:var(--ink-soft);transition:color .2s}
.foot-nav a:hover{color:var(--ink)}
.foot-copy{font-size:12px;color:var(--ink-soft)}
@media(max-width:640px){.foot-inner{justify-content:center;text-align:center}}