*{
  margin:0;
  padding:0;
  box-sizing:border-box;
}

body{
  background:black;
  color:white;
  font-family:Arial, sans-serif;
  overflow-x:hidden;
}

.overlay{
  position:fixed;
  width:100%;
  height:100%;
  background:
    radial-gradient(circle at top, rgba(0,255,255,0.15), transparent 40%),
    radial-gradient(circle at bottom, rgba(255,0,255,0.15), transparent 40%);
  z-index:-1;
}

.container{
  text-align:center;
  padding:100px 20px;
}

.logo{
  font-size:72px;
  letter-spacing:8px;
  color:white;

  text-shadow:
    0 0 10px #00ffff,
    0 0 20px #00ffff,
    0 0 40px #00ffff;

  margin-bottom:20px;
}

.subtitle{
  color:#aaa;
  margin-bottom:60px;
  letter-spacing:4px;
}

.menu{
  display:flex;
  justify-content:center;
  gap:20px;
  flex-wrap:wrap;
}

.button{
  display:inline-block;
  padding:15px 40px;

  border:1px solid white;

  color:white;
  text-decoration:none;

  backdrop-filter:blur(10px);

  background:rgba(255,255,255,0.05);

  transition:0.3s;

  letter-spacing:2px;
}

.button:hover{
  background:white;
  color:black;

  box-shadow:
    0 0 20px white,
    0 0 40px cyan;
}

.card,
.item{
  max-width:500px;

  margin:30px auto;

  padding:30px;

  border:1px solid rgba(255,255,255,0.2);

  background:rgba(255,255,255,0.05);

  backdrop-filter:blur(20px);

  box-shadow:
    0 0 20px rgba(0,255,255,0.2);
}

.card h2,
.item h2{
  margin-bottom:10px;
}

.item img{
  width:100%;
  margin-bottom:20px;

  filter:contrast(1.1) brightness(1.1);

  border:1px solid rgba(255,255,255,0.3);
}