/* style.css - Tetron single page */
:root{
  --bg:#0f1724;
  --card:#0b1220;
  --muted:#9aa7b2;
  --accent:#00d1ff;
  --glass: rgba(255,255,255,0.03);
  --max-width:1100px;
  --radius:12px;
  --gap:24px;
  font-size:16px;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  color:#e6eef6;
  background:linear-gradient(180deg,var(--bg),#071022 80%);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.5;
}
.container{max-width:var(--max-width);margin:0 auto;padding:40px 20px;}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;}
.site-header{position:sticky;top:0;backdrop-filter: blur(6px);background:linear-gradient(180deg, rgba(6,10,16,0.6), rgba(6,10,16,0.3));z-index:50;border-bottom:1px solid rgba(255,255,255,0.03);}
.logo{font-weight:700;font-size:1.25rem;color:var(--accent);letter-spacing:0.6px}
.logo.small{font-size:1rem}
.nav a{color:var(--muted);text-decoration:none;margin-left:18px;font-weight:600}
.nav a:hover{color:#fff}
.nav-toggle{display:none;background:none;border:0;color:#fff;font-size:1.25rem}

/* Hero */
.hero{padding:80px 0}
.hero-grid{display:grid;grid-template-columns:1fr 420px;gap:40px;align-items:center}
.hero h1{font-size:2.25rem;margin:0 0 12px}
.lead{color:var(--muted);max-width:560px}
.btn-row{margin-top:18px}
.btn{display:inline-block;padding:10px 16px;border-radius:10px;text-decoration:none;font-weight:700}
.btn.primary{background:linear-gradient(90deg,var(--accent),#66f0ff);color:#05202a}
.btn.ghost{border:1px solid rgba(255,255,255,0.06);color:#d8eef6;margin-left:8px}

/* Sections */
.section{padding:60px 0}
.section h2{font-size:1.5rem;margin-bottom:14px}
.cards{display:flex;gap:18px;flex-wrap:wrap}
.card{background:var(--glass);padding:20px;border-radius:14px;flex:1;min-width:220px;backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,0.03)}
.team-grid{display:flex;gap:18px;flex-wrap:wrap}
.team-card{background:linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));padding:18px;border-radius:12px;min-width:200px;text-align:center}
.avatar{width:72px;height:72px;margin:0 auto 12px}

/* Footer */
.site-footer{border-top:1px solid rgba(255,255,255,0.03);padding:28px 0;background:transparent}
.footer-grid{display:flex;justify-content:space-between;align-items:center}

/* Animations */
.fade-up{opacity:0;transform:translateY(18px);transition:all 600ms cubic-bezier(.2,.9,.3,1)}
.fade-up.show{opacity:1;transform:none}
.delay-1{transition-delay:120ms}
.delay-2{transition-delay:220ms}
.delay-3{transition-delay:320ms}

/* Responsive */
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr; text-align:center}
  .nav{display:none}
  .nav-toggle{display:block}
  .footer-grid{flex-direction:column;gap:12px;text-align:center}
}