html,
body {
  margin: 0;
  padding: 0;
  height: auto;
  min-height: 100%;   /* asegura que desktop se vea igual */
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #f5f5f5;
  background-color: #1F1F1F;
  background-size: cover;
  background-attachment: fixed;
}

.booster-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 3rem;
}

.booster-container h1 {
  color: #ffffff;
  font-size: 30pt;
}

.pack-area {
  margin: 2rem 0;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
}

#pack-image {
  width: 300px;
  transition: transform 0.3s ease;
}

#pack-image:hover {
  transform: scale(1.05);
}

.cards-display {
  max-width: 100%;    /* antes 900px */
  width: 100%;
  padding: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); /* desktop */
  gap: 1rem;
  box-sizing: border-box;
}

.card-slot img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: contain;
  transition: transform 0.3s ease;
}

.card-slot p {
  margin: 0.5rem 0 0;
  font-weight: bold;
  color: #f5f5f5;
}

.card-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.card-center {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  max-width: 900px;
  align-items: flex-start;
}

.card-center .card-slot {
  width: 340px;
  text-align: center;
  opacity: 0;
  transform: rotateY(90deg);
  transition: transform 0.3s ease, opacity 0.3s ease;
  cursor: pointer;
}

.card-center .card-slot.show {
  opacity: 1;
  transform: rotateY(0deg);
}

.card-center img {
  width: 100%;
  transition: transform 0.3s ease;
}

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

.card-center p {
  margin: 0.5rem 0 0;
  font-weight: bold;
  color: #f5f5f5;
}

#next-pack-btn {
  padding: 0.5rem 1rem;
  font-size: 1rem;
  cursor: pointer;
  margin-top: 80px;
}

#back-to-packs-btn, .next-pack {
  margin-top: 30px;
  padding: 8px 16px;
  font-size: 1rem;
  cursor: pointer;
  background-color: #1f1f1f00;
  color: #E4700F;
  border: 2px solid #E4700F;
  border-radius: 6px;
  transition: transform 0.2s, background-color 0.2s;
}

#back-to-packs-btn:hover, .next-pack:hover {
  transform: scale(1.1);
}

/* ====== Tablet / móviles medios (768px - 481px) ====== */
@media (max-width: 768px) {
  #pack-image {
    width: 240px;
  }

  .cards-display {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.4rem;
    padding: 0.5rem;
  }

  .card-center img {
    width: 100%;
  }

  .card-overlay img {
    width: 60%;
  }

  .card-center .card-slot {
    width: 530px;
  }

  #next-pack-btn {
    margin-top: 0.5rem;
  }
}

/* ====== Móvil pequeño (480px y menores) ====== */
@media (max-width: 480px) {
  #pack-image {
    width: 240px;
  }

  .cards-center {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.1rem;
    padding: 0.2rem;
  }

  .card-center img {
    width: 100%;
  }

  .card-overlay img {
    width: 40%;
  }

  .card-center .card-slot {
    width: 800px;
  }

  #next-pack-btn {
    margin-top: 0.5rem;
  }
}

footer {
  width: 100%;
  margin-top: 4rem;
  padding: 1.5rem 0;
  background: rgba(20, 20, 20, 0.65);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  text-align: center;
  font-size: clamp(0.65rem, 1.8vw, 0.85rem);
  color: #a0a0a0;
  border-top: 1px solid #333;
}

footer a {
  color: #E4700F;
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}