.game-container {
  display: flex;
  background-color: var(--container-bg);
  border-radius: var(--border-radius-lg);
  justify-content: center;
  align-items: center;
  flex-grow: 1;
  padding: 20px;
  margin: 0 auto 40px;
  max-width: 1000px;
  z-index: 1;
}

.memory-game {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 25px;
  justify-content: center;
  width: 100%;
  margin: 0 auto;
  position: relative;
}

.memory-card {
  width: 160px;
  height: 160px;
  position: relative;
  transform-style: preserve-3d;
  transition: transform 0.6s ease, z-index 0s;
  cursor: pointer;
  margin: 0 auto;
}

.memory-card.flip {
  transform: rotateY(180deg);
  z-index: 10; /* Asegura que la carta esté por encima */
}

.memory-card img {
  width: 100%;
  height: 100%;
  border-radius: 15px;
  object-fit: contain;
  box-shadow: 0 6px 10px rgba(0,0,0,0.2);
  padding: 5px;
}

.front-face, .back-face {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  top: 0;
  left: 0;
  border-radius: 15px;
}

.front-face {
  transform: rotateY(180deg);
}

.buttons {
  width: 100%;
  display: flex;
  justify-content: center;
  margin-top: 30px;
  gap: 20px;
}
button {
  background-color: var(--primary-color);
  color: white;
  padding: 10px 20px;
  border: none;
  border-radius: 12px;
  font-size: 1rem;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

button:hover {
  background-color: var(--secondary-color);

}

button:active {
  transform: scale(0.95);
}