/* ======= LAYOUT GERAL ======= */
.catalog-wrapper {
    max-width: 900px;
    margin: 40px auto;
    padding: 20px;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12);
    background: #ffffff;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  }
  
  .catalog-wrapper h2 {
    margin: 0 0 20px;
    font-size: 1.5rem;
    text-align: center;
  }
  
  /* ======= ÁREA DO LIVRO ======= */
  .catalog {
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 1600px; /* importante pro efeito 3D */
  }
  
  .catalog-book {
    position: relative;
    width: min(90vw, 700px);
    height: min(60vw, 460px);
    background: #f7f7f7;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.18);
  }
  
  /* ======= PÁGINAS ======= */
  .catalog-page {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transform-origin: left center;
    transform: rotateY(0deg);
    transition: transform 0.8s ease, box-shadow 0.8s ease;
    backface-visibility: hidden;
    background: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  /* Página virada */
  .catalog-page.turned {
    transform: rotateY(-180deg);
    box-shadow: none;
  }
  
  /* Estilo da imagem dentro da página */
  .catalog-page img {
    max-width: 96%;
    max-height: 96%;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
  }
  
  /* ======= CONTROLES ======= */
  .catalog-controls {
    margin-top: 16px;
    display: flex;
    gap: 12px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
  }
  
  .catalog-controls button {
    padding: 8px 16px;
    border-radius: 999px;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    background: #111827;
    color: #f9fafb;
    box-shadow: 0 4px 10px rgba(15, 23, 42, 0.25);
    transition: transform 0.1s ease, box-shadow 0.1s ease, opacity 0.2s ease;
  }
  
  .catalog-controls button:disabled {
    opacity: 0.35;
    cursor: not-allowed;
    box-shadow: none;
  }
  
  .catalog-controls button:not(:disabled):hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(15, 23, 42, 0.35);
  }
  
  .catalog-controls button:not(:disabled):active {
    transform: translateY(1px);
    box-shadow: 0 3px 8px rgba(15, 23, 42, 0.25);
  }
  
  #pageIndicator {
    font-size: 0.95rem;
    color: #4b5563;
  }
  
  /* Responsivo em telas menores */
  @media (max-width: 600px) {
    .catalog-wrapper {
      margin: 20px 10px;
      padding: 16px;
    }
  
    .catalog-wrapper h2 {
      font-size: 1.25rem;
    }
  
    .catalog-controls button {
      width: 100%;
      justify-content: center;
    }
  }
/* Centralização do wrapper */
.wrapper {
  position: relative;
  width: 100%;
  display: flex;
  justify-content: center;
  margin: 20px 0;
}

.link_wrapper {
  position: relative;
}

/* Agora o botão recebe o estilo do seu <a> */
.accordion-btn {
  display: block;
  width: 250px;
  height: 50px;
  line-height: 50px;
  font-weight: bold;
  text-decoration: none;
  background: #333;
  text-align: center;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 1px;
  border: 3px solid #333;
  transition: all .35s;
  cursor: pointer;
  border-radius: 0; /* Para ficar igual ao seu estilo original */
}

.icon {
  width: 50px;
  height: 50px;
  border: 3px solid transparent;
  position: absolute;
  transform: rotate(45deg);
  right: 0;
  top: 0;
  z-index: -1;
  transition: all .35s;
}

.icon svg {
  width: 30px;
  position: absolute;
  top: calc(50% - 15px);
  left: calc(50% - 15px);
  transform: rotate(-45deg);
  fill: #2ecc71;
  transition: all .35s;
}

/* Efeitos de hover */
.accordion-btn:hover {
  width: 200px;
  border: 3px solid #2ecc71;
  background: transparent;
  color: #2ecc71;
}

.accordion-btn:hover + .icon {
  border: 3px solid #2ecc71;
  right: -25%;
}

/* Conteúdo do acordeão */
.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
  background: #f5f5f5;
  border-radius: 10px;
  margin-top: 10px;
  padding: 0 15px;
}