/* ============================================================
   SceneSort Pro — Design System (single source of truth)
   One palette · one type scale · one spacing · one radius ·
   one shadow system · one button system · one card system.
   ============================================================ */

/* ---- Tokens ---- */
:root{
  /* ink / neutrals */
  --ink:#0B0F1A;          /* near-black slate — headings, dark sections */
  --ink-2:#161C2A;
  --text:#3B4354;         /* body */
  --muted:#6C7585;        /* secondary */
  --faint:#9AA2B1;
  --line:#E7E9F0;         /* hairline borders */
  --line-2:#EEF0F5;
  --bg:#FFFFFF;
  --bg-soft:#F7F8FB;      /* alternating sections */
  --bg-dark:#0B0F1A;      /* dark bands */
  --white:#FFFFFF;

  /* single accent — deep amber, used sparingly */
  --accent:#E0610E;
  --accent-press:#C2510A;
  --accent-tint:#FBEFE6;
  --accent-ink:#B4500B;   /* accent text on light */

  /* status (muted, for comparison ticks only) */
  --ok:#1E9E62;
  --no:#C0485A;

  /* radius */
  --r-xs:7px; --r-sm:10px; --r:13px; --r-lg:18px; --r-pill:999px;

  /* shadows — subtle, layered */
  --sh-sm:0 1px 2px rgba(11,15,26,.05), 0 1px 1px rgba(11,15,26,.04);
  --sh:0 10px 28px -10px rgba(11,15,26,.14), 0 2px 6px rgba(11,15,26,.05);
  --sh-lg:0 36px 70px -24px rgba(11,15,26,.30), 0 8px 24px -12px rgba(11,15,26,.18);

  /* type */
  --sans:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  --mono:'JetBrains Mono','SF Mono',ui-monospace,Menlo,Consolas,monospace;

  --maxw:1180px;
}

/* ---- Reset / base ---- */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:var(--sans);color:var(--text);background:var(--bg);
  line-height:1.6;font-size:16px;letter-spacing:-.006em;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
svg{display:block}
::selection{background:var(--accent);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}

/* ---- Layout ---- */
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.section{padding:clamp(76px,9vw,118px) 0}
.section.soft{background:var(--bg-soft)}
.section.dark{background:var(--bg-dark);color:#C7CCD6}
.center{text-align:center}
.divider{height:1px;background:var(--line);border:0}

/* ---- Typography ---- */
.eyebrow{
  display:inline-block;font-size:12px;font-weight:650;letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent-ink);
}
.section.dark .eyebrow{color:#E08A4E}
.kicker{max-width:680px}
.kicker.center{margin-left:auto;margin-right:auto}
h1,h2,h3{color:var(--ink);font-weight:700;letter-spacing:-.025em;line-height:1.08}
.section.dark h1,.section.dark h2,.section.dark h3{color:#fff}
.h-display{font-size:clamp(36px,5.4vw,62px);font-weight:760;letter-spacing:-.032em;line-height:1.02}
.h2{font-size:clamp(28px,3.6vw,42px);margin-top:14px}
.h3{font-size:clamp(19px,2vw,23px)}
.lead{font-size:clamp(16px,1.4vw,18.5px);color:var(--muted);line-height:1.65;margin-top:16px}
.section.dark .lead{color:#9AA3B4}
.mono{font-family:var(--mono);font-feature-settings:"calt" 0}
strong,b{color:var(--ink);font-weight:620}
.section.dark strong,.section.dark b{color:#fff}

/* ---- Buttons (one system) ---- */
.btn{
  --bh:46px;
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:var(--bh);padding:0 20px;border-radius:var(--r-sm);
  font-family:var(--sans);font-size:14.5px;font-weight:620;letter-spacing:-.01em;
  cursor:pointer;border:1px solid transparent;white-space:nowrap;
  transition:transform .16s ease,box-shadow .16s ease,background .16s ease,border-color .16s ease,color .16s ease;
}
.btn svg{width:17px;height:17px}
.btn-lg{--bh:54px;padding:0 26px;font-size:15.5px;border-radius:var(--r)}
.btn-block{width:100%}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 16px -6px rgba(224,97,14,.5)}
.btn-primary:hover{background:var(--accent-press);transform:translateY(-1px);box-shadow:0 10px 22px -8px rgba(224,97,14,.55)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#000;transform:translateY(-1px);box-shadow:var(--sh)}
.btn-ghost{background:var(--white);color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{border-color:#CDD2DE;transform:translateY(-1px);box-shadow:var(--sh-sm)}
.section.dark .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.18)}
.section.dark .btn-ghost:hover{border-color:rgba(255,255,255,.4);background:rgba(255,255,255,.04)}

/* ---- Eyebrow header block ---- */
.head{max-width:720px}
.head.center{margin:0 auto;text-align:center}

/* ---- Cards (one system) ---- */
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r);
  padding:26px;box-shadow:var(--sh-sm);transition:border-color .18s,box-shadow .18s,transform .18s;
}
.card:hover{border-color:#D7DBE5;box-shadow:var(--sh);transform:translateY(-2px)}
.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

/* icon chip */
.chip{
  width:42px;height:42px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:var(--bg-soft);border:1px solid var(--line);color:var(--ink);margin-bottom:16px;
}
.chip svg{width:20px;height:20px;stroke-width:1.7}
.card h3{font-size:16.5px;margin-bottom:7px;letter-spacing:-.02em}
.card p{font-size:14.5px;color:var(--muted);line-height:1.6}

/* ---- Nav ---- */
.nav{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.82);backdrop-filter:saturate(160%) blur(14px);border-bottom:1px solid transparent;transition:border-color .2s,box-shadow .2s}
.nav.scrolled{border-bottom-color:var(--line);box-shadow:0 1px 0 rgba(11,15,26,.02)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand-img{height:26px;width:auto}
.nav-links{display:flex;gap:30px}
.nav-links a{font-size:14px;font-weight:540;color:var(--muted);transition:color .15s}
.nav-links a:hover{color:var(--ink)}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:42px;height:42px;align-items:center;justify-content:center;background:none;border:1px solid var(--line);border-radius:var(--r-sm);color:var(--ink);cursor:pointer}

/* ---- Frames for screenshots ---- */
.frame{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  background:#fff;box-shadow:var(--sh-lg);
}
.frame.bare{box-shadow:var(--sh)}
.browser-bar{display:flex;align-items:center;gap:7px;height:38px;padding:0 14px;background:#F3F4F8;border-bottom:1px solid var(--line)}
.browser-bar i{width:10px;height:10px;border-radius:50%;background:#D5D9E2;display:block}
.frame img{width:100%;height:auto;display:block}

/* ---- Split rows ---- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,5vw,72px);align-items:center}
.split.rev .split-media{order:-1}
.feature-list{list-style:none;margin-top:22px;display:flex;flex-direction:column;gap:13px}
.feature-list li{display:flex;gap:12px;font-size:15px;color:var(--text);align-items:flex-start}
.feature-list svg{width:20px;height:20px;flex-shrink:0;color:var(--accent);margin-top:1px}

/* ---- Reveal animation (one language) ---- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s cubic-bezier(.22,.61,.36,1),transform .6s cubic-bezier(.22,.61,.36,1)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}}

/* ---- Footer ---- */
footer.site{background:var(--ink);color:#9AA3B4;padding:64px 0 34px}
footer.site .brand-img{filter:brightness(0) invert(1);opacity:.92}
.foot-grid{display:grid;grid-template-columns:1.4fr 2fr;gap:40px}
.foot-brand p{font-size:14px;color:#7E8799;margin-top:16px;max-width:320px;line-height:1.6}
.foot-cols{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.foot-col h5{font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:#5C6577;margin-bottom:14px}
.foot-col a{display:block;font-size:14px;color:#9AA3B4;margin-bottom:10px;transition:color .15s}
.foot-col a:hover{color:#fff}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);font-size:13px;color:#6C7585}
.foot-bottom a{color:#9AA3B4}
.foot-badges{display:flex;gap:18px;flex-wrap:wrap}
.foot-badge{display:inline-flex;align-items:center;gap:7px;font-size:12.5px;color:#7E8799}
.foot-badge svg{width:15px;height:15px;color:#5C6577}

/* ---- Responsive ---- */
@media (max-width:980px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr;gap:34px}
  .split.rev .split-media{order:0}
  .foot-grid{grid-template-columns:1fr}
}
@media (max-width:720px){
  .nav-links{display:none}
  .nav-links.open{display:flex;position:absolute;top:66px;left:0;right:0;flex-direction:column;gap:0;background:#fff;border-bottom:1px solid var(--line);padding:8px 0;box-shadow:var(--sh)}
  .nav-links.open a{padding:13px 28px}
  .nav-toggle{display:flex}
  .nav-right .btn:not(.nav-toggle){display:none}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .foot-cols{grid-template-columns:1fr 1fr}
  .foot-bottom{flex-direction:column;align-items:flex-start}
}