html,body{margin:0;height:100%;background:#000;overflow:hidden}
#c{display:block;width:100%;height:100%}

/* Header/Footer */
.app-header{
  position:fixed; left:0; right:0; top:0;
  height:96px;
  display:flex;
  align-items:center;
  padding:0 28px;
  background:#fff;
  z-index:5;
}
.app-header .logo{
  height:34px;
  width:auto;
  display:block;
}

.app-footer{
  position:fixed; left:0; right:0; bottom:0;
  height:64px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:#fff;
  color:#000;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  font-size:13px;
  letter-spacing:.02em;
  z-index:5;
}

.hidden{display:none}

/* Gate Overlay */
.gate{
  position:fixed; inset:0;
  display:grid; place-items:center;
  background: rgba(0,0,0,.72);
  backdrop-filter: blur(8px);
  z-index:10;
}
.gate.hidden{display:none}
.gate-card{
  width:min(420px, 92vw);
  padding:22px 18px;
  border:1px solid rgba(255,255,255,.12);
  border-radius:16px;
  background: rgba(10,10,10,.72);
  box-shadow: 0 25px 80px rgba(0,0,0,.55);
  color:#fff;
  text-align:center;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
}
.gate-title{font-weight:800;font-size:18px;letter-spacing:.04em}
.gate-sub{margin:10px 0 14px;color:rgba(255,255,255,.7);font-size:13px}
.gate-btn{
  width:100%;
  padding:12px 14px;
  border-radius:12px;
  border:1px solid rgba(255,255,255,.16);
  background: rgba(255,255,255,.10);
  color:#fff;
  font-weight:700;
  cursor:pointer;
}
.gate-btn:hover{background: rgba(255,255,255,.14)}
.gate-link{
  margin-top:10px;
  background:transparent;
  border:none;
  color:rgba(255,255,255,.7);
  cursor:pointer;
  text-decoration:underline;
}