/* ============================================================
   NURZUN OS — mindapro.ai
   Elite static brand system. No framework, no DB.
   Palette: deep ink + Nurzun gold + Islamic green accent.
   ============================================================ */
:root{
  --ink:#0c1116;
  --ink-2:#141b22;
  --surface:#171f27;
  --surface-2:#1e2832;
  --line:#2a3640;
  --text:#e8edf2;
  --muted:#9aa7b2;
  --gold:#d4a02a;
  --gold-soft:#e7c66b;
  --green:#1f8a5b;
  --green-soft:#3fbf87;
  --radius:14px;
  --radius-sm:10px;
  --maxw:1180px;
  --shadow:0 20px 50px -20px rgba(0,0,0,.6);
  --font:'Segoe UI',system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  background:var(--ink);
  color:var(--text);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.muted{color:var(--muted)}
.gold{color:var(--gold)}
.green{color:var(--green-soft)}

/* ---------- NAV ---------- */
.nav{
  position:sticky;top:0;z-index:50;
  background:rgba(12,17,22,.82);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:.5px;font-size:19px}
.brand .mark{
  width:34px;height:34px;border-radius:9px;
  background:linear-gradient(135deg,var(--gold),var(--gold-soft));
  display:grid;place-items:center;color:var(--ink);font-weight:900;font-size:16px;
  box-shadow:0 6px 18px -6px var(--gold);
}
.brand small{display:block;font-size:10px;letter-spacing:3px;color:var(--muted);font-weight:600}
.nav-links{display:flex;gap:30px;align-items:center}
.nav-links a{color:var(--muted);font-weight:600;font-size:14.5px;transition:.2s}
.nav-links a:hover{color:var(--text)}
.btn{
  display:inline-flex;align-items:center;gap:8px;
  background:linear-gradient(135deg,var(--gold),var(--gold-soft));
  color:var(--ink);font-weight:800;padding:11px 20px;border-radius:var(--radius-sm);
  font-size:14.5px;transition:.2s;border:none;cursor:pointer;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 12px 26px -10px var(--gold)}
.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn.ghost:hover{border-color:var(--gold);color:var(--gold)}
.menu-toggle{display:none;background:none;border:none;color:var(--text);font-size:24px;cursor:pointer}

/* ---------- HERO ---------- */
.hero{position:relative;padding:96px 0 80px;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(800px 500px at 78% -8%,rgba(212,160,42,.16),transparent 60%),
    radial-gradient(700px 500px at 8% 110%,rgba(31,138,91,.14),transparent 60%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:54px;align-items:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  border:1px solid var(--line);background:var(--surface);
  padding:7px 14px;border-radius:999px;font-size:13px;color:var(--muted);font-weight:600;
}
.eyebrow .dot{width:8px;height:8px;border-radius:50%;background:var(--green-soft);box-shadow:0 0 12px var(--green-soft)}
.hero h1{font-size:54px;line-height:1.08;font-weight:900;margin:22px 0 18px;letter-spacing:-1px}
.hero h1 .grad{background:linear-gradient(120deg,var(--gold-soft),var(--gold));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{font-size:18.5px;color:var(--muted);max-width:540px;margin-bottom:30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:34px;margin-top:42px}
.hero-stats .s b{display:block;font-size:28px;font-weight:900;color:var(--text)}
.hero-stats .s span{font-size:13px;color:var(--muted)}

/* hero visual card */
.hero-card{
  background:linear-gradient(160deg,var(--surface-2),var(--surface));
  border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);
}
.hero-card h4{font-size:14px;color:var(--muted);font-weight:700;letter-spacing:1px;text-transform:uppercase;margin-bottom:16px}
.os-row{display:flex;align-items:center;gap:13px;padding:12px 0;border-bottom:1px solid var(--line)}
.os-row:last-child{border-bottom:none}
.os-row .ic{width:38px;height:38px;border-radius:10px;background:var(--ink-2);display:grid;place-items:center;font-size:18px;border:1px solid var(--line)}
.os-row .t{font-weight:700;font-size:15px}
.os-row .d{font-size:12.5px;color:var(--muted)}

/* ---------- SECTION ---------- */
section{padding:84px 0}
.sec-head{max-width:680px;margin-bottom:46px}
.sec-head .tag{color:var(--gold);font-weight:800;font-size:13px;letter-spacing:2px;text-transform:uppercase}
.sec-head h2{font-size:38px;font-weight:900;margin:12px 0 14px;letter-spacing:-.5px}
.sec-head p{color:var(--muted);font-size:16.5px}

/* ---------- PRODUCTS ---------- */
.prod-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.prod{
  background:linear-gradient(160deg,var(--surface-2),var(--surface));
  border:1px solid var(--line);border-radius:var(--radius);padding:32px;position:relative;overflow:hidden;transition:.25s;
}
.prod:hover{transform:translateY(-4px);border-color:var(--gold)}
.prod .badge{position:absolute;top:22px;right:22px;font-size:11px;font-weight:800;letter-spacing:1px;text-transform:uppercase;padding:5px 11px;border-radius:999px;background:var(--ink-2);border:1px solid var(--line);color:var(--gold)}
.prod .pico{width:56px;height:56px;border-radius:14px;background:var(--ink-2);display:grid;place-items:center;font-size:26px;border:1px solid var(--line);margin-bottom:20px}
.prod h3{font-size:24px;font-weight:900;margin-bottom:10px}
.prod p{color:var(--muted);font-size:15px;margin-bottom:20px}
.prod ul{list-style:none;margin-bottom:24px}
.prod li{display:flex;gap:10px;padding:7px 0;font-size:14.5px;color:var(--text)}
.prod li::before{content:"▸";color:var(--gold);font-weight:900}
.prod .meta{display:flex;gap:18px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:16px}

/* ---------- FEATURES ---------- */
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.2s}
.feat:hover{border-color:var(--gold-soft)}
.feat .fic{width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,var(--gold),var(--gold-soft));display:grid;place-items:center;color:var(--ink);font-size:22px;font-weight:900;margin-bottom:16px}
.feat h3{font-size:18px;font-weight:800;margin-bottom:9px}
.feat p{color:var(--muted);font-size:14.5px}

/* ---------- OS 12 DEPT ---------- */
.dept-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.dept{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);padding:18px;transition:.2s}
.dept:hover{background:var(--surface-2);border-color:var(--gold)}
.dept .n{font-size:12px;color:var(--gold);font-weight:800;letter-spacing:1px}
.dept .dn{font-weight:800;font-size:15px;margin:5px 0 4px}
.dept .dd{font-size:12.5px;color:var(--muted)}

/* ---------- CTA STRIP ---------- */
.cta-strip{
  background:linear-gradient(135deg,var(--ink-2),var(--surface-2));
  border:1px solid var(--line);border-radius:var(--radius);
  padding:54px;text-align:center;position:relative;overflow:hidden;
}
.cta-strip::before{content:"";position:absolute;inset:0;background:radial-gradient(500px 300px at 50% -20%,rgba(212,160,42,.18),transparent 70%)}
.cta-strip h2{font-size:34px;font-weight:900;margin-bottom:12px;position:relative}
.cta-strip p{color:var(--muted);margin-bottom:26px;position:relative}

/* ---------- FOOTER ---------- */
.foot{border-top:1px solid var(--line);padding:54px 0 30px;background:var(--ink-2)}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px;margin-bottom:36px}
.foot h5{font-size:13px;text-transform:uppercase;letter-spacing:1.5px;color:var(--muted);margin-bottom:16px}
.foot a{display:block;color:var(--muted);font-size:14px;padding:5px 0;transition:.2s}
.foot a:hover{color:var(--gold)}
.foot .blurb{color:var(--muted);font-size:14px;max-width:300px;margin-top:14px}
.foot-bottom{border-top:1px solid var(--line);padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;color:var(--muted);font-size:13px}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(24px);transition:.7s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- RESPONSIVE ---------- */
@media(max-width:920px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero h1{font-size:40px}
  .prod-grid,.feat-grid{grid-template-columns:1fr}
  .dept-grid{grid-template-columns:repeat(2,1fr)}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
  .menu-toggle{display:block}
  .nav-links.open{display:flex;position:absolute;top:68px;left:0;right:0;flex-direction:column;background:var(--ink-2);padding:20px 24px;border-bottom:1px solid var(--line);gap:16px}
}
@media(max-width:560px){
  .hero h1{font-size:33px}
  .hero-stats{gap:20px;flex-wrap:wrap}
  .dept-grid{grid-template-columns:1fr}
  .cta-strip{padding:36px 22px}
  .sec-head h2{font-size:29px}
}