:root{
  --bg:#071026;
  --fg:#e6eef8;
  --muted:#94a3b8;
  --accent:#7c3aed;
  --glass: rgba(255,255,255,0.03);
  --radius:12px;
  --gap:16px;
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial;
  color-scheme: light;
  color: var(--fg);
}

/* reset / base */
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:linear-gradient(180deg,#071026 0%, #07182a 100%);
  color:var(--fg);
  -webkit-font-smoothing:antialiased;
  font-size:16px;
  line-height:1.45;
  -webkit-text-size-adjust:100%;
}

/* layout */
.container{width:100%;max-width:1100px;margin:0 auto;padding:20px}
.header-row{display:flex;align-items:center;gap:12px;justify-content:space-between}
.brand{font-weight:700;font-size:20px}
.nav{display:flex;gap:12px;align-items:center}
.nav-link{color:var(--muted);text-decoration:none;padding:8px 6px}
.nav-toggle{display:none;background:transparent;border:0;color:var(--muted);font-size:20px}

/* header / buttons */
.site-header{padding:12px 0}
.button{
  border:0;
  padding:10px 14px;
  border-radius:10px;
  cursor:pointer;
  font-weight:600;
  background:transparent;
  color:var(--muted);
  min-height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  transition:transform .12s ease, box-shadow .12s ease, opacity .12s ease;
}
.button[type="submit"], .button.primary[type="submit"]{ /* safeguard if used in forms */ }
.button.primary{background:var(--accent);color:white}
.button.ghost{background:transparent;border:1px solid rgba(255,255,255,0.06);color:var(--muted)}
.button:active{transform:translateY(0.5px)}

/* hero */
.hero{display:grid;grid-template-columns:1fr 320px;gap:24px;align-items:start;padding:36px 0}
.hero-left h1{font-size:28px;margin:0 0 8px}
.lead{color:var(--muted);margin:0 0 18px}
.controls{display:flex;gap:12px;margin-top:16px}
.controls input{
  flex:1;padding:12px;border-radius:10px;border:1px solid rgba(255,255,255,0.04);
  background:var(--glass);color:inherit;
  min-width:0;
}

/* cards */
.muted{color:var(--muted)}
.small{font-size:13px}
.card{
  background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  padding:18px;border-radius:var(--radius);
  box-shadow:0 6px 18px rgba(2,6,23,0.6);
}
.grid-samples{padding:18px 0}
.cards-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px}

.product{
  padding:16px;border-radius:10px;background:var(--glass);
  min-height:120px;display:flex;flex-direction:column;justify-content:space-between;
  transition:transform .12s ease, box-shadow .12s ease;
}
.product:hover{ transform: translateY(-4px); box-shadow: 0 10px 30px rgba(2,6,23,0.6); }
.product h4{margin:0 0 6px}
.product p{margin:0 0 12px;color:var(--muted);font-size:14px}
.card-actions{display:flex;gap:8px;justify-content:flex-end}

/* footer */
.site-footer{border-top:1px solid rgba(255,255,255,0.03);padding:14px 0;margin-top:28px;color:var(--muted);font-size:14px;text-align:center}

/* modal */
.modal{position:fixed;inset:0;display:none;align-items:center;justify-content:center;background:rgba(2,6,23,0.6);z-index:60}
.modal[aria-hidden="false"]{display:flex}
.modal-panel{background:#071026;padding:20px;border-radius:12px;width:min(720px,94%);max-height:90vh;overflow:auto}
.modal-close{float:right;border:0;background:transparent;color:var(--muted);font-size:18px}

/* utilities */
.visually-hidden{position:absolute!important;height:1px;width:1px;overflow:hidden;clip:rect(1px,1px,1px,1px);white-space:nowrap}
img.lazy{display:block;width:100%;height:auto;object-fit:cover;max-width:100%}

/* responsive */
@media (max-width:880px){
  .hero{grid-template-columns:1fr;gap:18px}
  .nav{
    position:absolute;top:64px;right:20px;flex-direction:column;
    background:rgba(2,6,23,0.95);padding:12px;border-radius:8px;display:none;
  }
  .nav.show{display:flex}
  .nav-toggle{display:block}
}

/* focus / accessibility */
/* keep visible focus for keyboard users; avoid removing focus ring for all inputs */
:focus:not(:focus-visible){ outline: none; }
:focus-visible{ outline: 3px solid rgba(124,58,237,0.9); outline-offset: 2px; border-radius:8px; }

/* reduced motion */
@media (prefers-reduced-motion: reduce){
  *{ transition: none !important; animation: none !important; }
}

/* small helpers */
.hidden{display:none!important}
.center{display:flex;align-items:center;justify-content:center}