:root{
  --bg:#0b1220;
  --card:#0f1724;
  --muted:#9aa3b2;
  --accent1:#004bff;
  --accent2:#00d4ff;
  --glass: rgba(255,255,255,0.03);
  --radius:12px;
  --max:1100px;
  font-family: 'Inter', system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  color-scheme: dark;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background: linear-gradient(180deg,#071026 0%, #071826 100%);
  color:#e6eef8;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.45;
  padding-bottom:60px;
}

.container{
  max-width:var(--max);
  margin:0 auto;
  padding:20px;
}

/* NAV */
.nav{
  position:sticky;
  top:0;
  z-index:40;
  backdrop-filter: blur(6px);
  border-bottom:1px solid rgba(255,255,255,0.03);
  background: linear-gradient(180deg, rgba(4,8,15,0.6), rgba(4,8,15,0.35));
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit}
.brand-logo{width:160px;height:44px}
.menu{display:flex;gap:18px}
.menu a{color:var(--muted);text-decoration:none;padding:8px 10px;border-radius:8px}
.menu a:hover{color:#fff;background:var(--glass)}
.btn-ghost{display:none;background:none;border:0;color:var(--muted);font-size:20px}

/* mobile menu */
.mobile-menu{display:none;padding:12px;border-top:1px solid rgba(255,255,255,0.02)}
.mobile-menu a{display:block;padding:10px 0;color:var(--muted);text-decoration:none}
.mobile-menu a.primary{margin-top:8px;background:linear-gradient(90deg,var(--accent1),var(--accent2));color:white;padding:10px;border-radius:8px;text-align:center}

/* HERO */
.hero{display:grid;grid-template-columns:1fr 420px;gap:28px;align-items:center;padding-top:32px;padding-bottom:32px}
.hero-text h1{font-size:36px;margin:0 0 12px}
.accent{background:linear-gradient(90deg,var(--accent1),var(--accent2));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{color:var(--muted);max-width:560px}
.hero-ctas{margin-top:18px;display:flex;gap:12px}
.btn-primary{background:linear-gradient(90deg,var(--accent1),var(--accent2));border:0;padding:10px 16px;border-radius:10px;color:white;text-decoration:none}
.btn-outline{background:transparent;border:1px solid rgba(255,255,255,0.06);padding:10px 14px;border-radius:10px;color:var(--muted);text-decoration:none}
.card-sample{background:linear-gradient(180deg,#05204f 0%, #003b9b 100%);padding:36px;border-radius:14px;text-align:center;box-shadow:0 10px 30px rgba(0,0,0,0.4)}

/* PRODUCTS */
.section{padding-top:28px;padding-bottom:28px}
.section-title{font-size:22px;margin-bottom:18px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.product-card{background:var(--card);border-radius:12px;overflow:hidden;box-shadow: 0 6px 20px rgba(2,6,23,0.6)}
.product-card img{width:100%;height:180px;object-fit:cover;display:block}
.card-body{padding:14px}
.price{font-weight:700;color:#e6f0ff}
.muted{color:var(--muted);font-size:13px;margin-top:6px}
.card-actions{margin-top:12px;display:flex;gap:8px}
.btn-sm{background:rgba(255,255,255,0.03);border:1px solid rgba(255,255,255,0.03);padding:8px 10px;border-radius:8px;color:var(--muted);cursor:pointer}
.btn-sm:hover{background:rgba(255,255,255,0.02)}

/* ABOUT */
.alt{background:linear-gradient(180deg, rgba(255,255,255,0.01), transparent);border-radius:10px;padding:20px;margin-top:14px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:center}

/* CONTACT */
.contact-form{display:flex;flex-direction:column;gap:10px;max-width:480px}
.contact-form input, .contact-form textarea{background:rgba(255,255,255,0.02);border:1px solid rgba(255,255,255,0.03);padding:12px;border-radius:8px;color:inherit}
.contact-form textarea{min-height:120px;resize:vertical}

/* FOOTER */
.footer{margin-top:40px;padding:20px 0;border-top:1px solid rgba(255,255,255,0.03)}
.footer-inner{display:flex;justify-content:space-between;align-items:center}
.social a{margin-left:10px;color:var(--muted);text-decoration:none}

/* modal */
.modal{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(5,8,15,0.6);opacity:0;pointer-events:none;transition:all .18s ease}
.modal[aria-hidden="false"]{opacity:1;pointer-events:auto}
.modal-card{background:var(--card);border-radius:12px;max-width:900px;width:94%;display:grid;grid-template-columns:1fr 320px;gap:12px;overflow:hidden;padding:14px}
.modal img{width:100%;height:100%;object-fit:cover;border-radius:8px}
.modal-info{padding:10px}
.modal-close{position:absolute;right:18px;top:18px;background:transparent;border:0;color:var(--muted);font-size:18px}

/* responsive */
@media (max-width:880px){
  .hero{grid-template-columns:1fr; text-align:center}
  .hero-visual{order:-1}
  .menu{display:none}
  .btn-ghost{display:inline-block}
  .mobile-menu{display:none}
  .brand-logo{width:140px}
  .two-col{grid-template-columns:1fr}
}