body {
  background: #0f172a;
  color: white;
  font-family: Arial;
  margin: 0;
}

.header {
  text-align: center;
  padding: 20px;
  font-size: 24px;
}

h2 {
  padding: 10px 15px;
}

#gameGrid,
#actionGrid,
#puzzleGrid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
  padding: 0 15px 20px;
}

@media(min-width:768px){
  #gameGrid,
  #actionGrid,
  #puzzleGrid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.game-card {
  background: linear-gradient(145deg, #1e293b, #0f172a);
  border-radius: 15px;
  padding: 10px;
  cursor: pointer;
  transition: 0.3s;
  text-align: center;
}

.game-card:hover {
  transform: scale(1.05);
}

.game-card img {
  width: 100%;
  border-radius: 10px;
  height: 140px;
  object-fit: cover;
}

.game-card h3 {
  margin-top: 10px;
  font-size: 14px;
}