/* ========== PDF STYLE FILE ========== */

.brown-div {
  width: 100vw;
  max-width: 800px;
  margin: 20px auto;
  background-color: white;
  padding: 20px;
  color: #66638F;
  box-sizing: border-box;
}

@media (max-width: 768px) {
  .brown-div { width: 90%; }
}

.view-image {
  max-width: 75%;
  height: auto;
  display: block;
  margin: 0 auto;
  opacity: 0;
  transform: translateX(100%);
  transition: all 1s ease;
}

/* ========== PDF CONTAINER ========== */
.PDF-container {
  display: grid;
  gap: 20px; 
}

@media (max-width: 600px) {
  .PDF-container {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
}

@media (min-width: 601px) and (max-width: 1024px) {
  .PDF-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    justify-content: center;
  }
}

@media (min-width: 1025px) {
  .PDF-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
  }

  .PDF-flip-card {
    margin: 10px;
  }
}

.PDF-flip-card {
  background-color: transparent;
  width: 300px;
  height: 213px;
  perspective: 1000px;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeSlideIn 1.2s ease-out forwards;
}

.PDF-flip-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.6s;
  transform-style: preserve-3d;
  box-shadow: 0 4px 8px rgba(0,0,0,0.2);
  border-radius: 10px;
}

.PDF-flip-card:hover .PDF-flip-card-inner {
  transform: rotateY(180deg);
}

.PDF-flip-card-front,
.PDF-flip-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 10px;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  overflow: hidden;
}

.PDF-flip-card-front {
  background-color: #bbb;
}

.PDF-flip-card-front img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 10px;
  background-color: #e0e0e0;
}

.PDF-flip-card-back {
  background-color: #66638F;
  color: white;
  transform: rotateY(180deg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.PDF-flip-card a {
  display: block;
  width: 100%;
  height: 100%;
  text-decoration: none;
  color: inherit;
}

@keyframes fadeSlideIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}