/* ==========================================================================
   BELATEKAVTO - 3D PDF Carousel & Magnifier Stylesheet
   ========================================================================== */

#pdf-viewer-section {
  background: linear-gradient(180deg, #edf2f7 0%, #e2e8f0 100%);
  padding: 4.5rem 0 4rem;
  user-select: none;
  overflow: hidden;
  position: relative;
}

#pdf-viewer-section .mbr-section-title {
  color: #0f172a;
  font-weight: 700;
}

.container-carousel {
  position: relative;
  width: 100%;
  max-width: 1300px;
  margin: 0 auto;
  height: 80vh;
  min-height: 580px;
  max-height: 900px;
  display: flex;
  justify-content: center;
  align-items: center;
  perspective: 1200px;
}

/* Individual 3D card wrappers */
.pdf-card {
  position: absolute;
  top: 50%;
  left: 50%;
  background: #ffffff;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
  border-radius: 4px;
  transition: all 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
  transform-origin: center center;
  overflow: hidden;
  opacity: 0;
  z-index: 0;
  transform: translate(-50%, -50%) scale(0.4);
  pointer-events: none;
}

.pdf-card canvas {
  display: block;
  width: 100%;
  height: auto;
}

/* Card States */
.pdf-card.is-active {
  opacity: 1;
  z-index: 20;
  transform: translate(-50%, -50%) scale(1);
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.35);
  pointer-events: auto;
  cursor: crosshair;
}

.pdf-card.is-prev {
  opacity: 0.55;
  z-index: 10;
  transform: translate(-135%, -50%) scale(0.65) rotateY(16deg);
  filter: blur(1px) grayscale(25%);
  cursor: pointer;
  pointer-events: auto;
}

.pdf-card.is-next {
  opacity: 0.55;
  z-index: 10;
  transform: translate(35%, -50%) scale(0.65) rotateY(-16deg);
  filter: blur(1px) grayscale(25%);
  cursor: pointer;
  pointer-events: auto;
}

/* Text Layer for Selection */
.textLayer {
  opacity: 1;
  mix-blend-mode: multiply;
  line-height: 1;
  pointer-events: none;
}

.pdf-card.is-active .textLayer {
  pointer-events: auto;
  cursor: text;
  user-select: text;
}

/* Carousel Navigation Buttons */
.pdf-nav-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background-color: #ffffff;
  color: #1e293b;
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  cursor: pointer;
  transition: all 0.25s ease;
  z-index: 100;
}

.pdf-nav-btn:hover {
  background-color: #0284c7;
  color: #ffffff;
  transform: translateY(-50%) scale(1.1);
  box-shadow: 0 10px 25px rgba(2, 132, 199, 0.45);
}

.pdf-nav-btn:active {
  transform: translateY(-50%) scale(0.95);
}

.btn-prev { left: 24px; }
.btn-next { right: 24px; }

/* Magnifying Glass */
.magnifier-lens {
  position: absolute;
  border: 3px solid #0284c7;
  border-radius: 50%;
  cursor: none;
  width: 360px;
  height: 360px;
  overflow: hidden;
  opacity: 0;
  transition: opacity 0.12s ease;
  pointer-events: none;
  z-index: 101;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
  background-color: #ffffff;
}

.magnifier-lens #canvas-lens {
  position: absolute;
  top: 0;
  left: 0;
}

/* Page Counter & Download Link */
.page-info {
  margin-top: 1.5rem;
  font-family: 'Jost', sans-serif;
  color: #475569;
  font-size: 1.15rem;
  font-weight: 500;
}

.pdf-download-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 0.75rem;
  padding: 0.5rem 1.25rem;
  background-color: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 20px;
  color: #0284c7;
  font-weight: 600;
  text-decoration: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: all 0.2s ease;
}

.pdf-download-link:hover {
  background-color: #0284c7;
  color: #ffffff;
  border-color: #0284c7;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(2, 132, 199, 0.3);
}

/* Fallback Card if PDF.js fails or is unavailable */
.pdf-fallback-card {
  display: none;
  background: #ffffff;
  border-radius: 16px;
  padding: 3rem 2rem;
  max-width: 500px;
  margin: 2rem auto;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  text-align: center;
}

.pdf-fallback-card.is-visible {
  display: block;
}

/* Responsive adjustments */
@media (max-width: 1200px) {
  .pdf-card.is-prev { transform: translate(-120%, -50%) scale(0.55); }
  .pdf-card.is-next { transform: translate(20%, -50%) scale(0.55); }
  .magnifier-lens { width: 300px; height: 300px; }
}

@media (max-width: 768px) {
  #pdf-viewer-section { padding: 3rem 0; }
  .container-carousel { height: 60vh; min-height: 420px; }
  .pdf-nav-btn { width: 44px; height: 44px; font-size: 1.2rem; }
  .btn-prev { left: 8px; }
  .btn-next { right: 8px; }
  /* On mobile hide side cards and magnifier to ensure smooth performance */
  .pdf-card.is-prev,
  .pdf-card.is-next {
    opacity: 0 !important;
    pointer-events: none !important;
  }
  .magnifier-lens {
    display: none !important;
  }
  .pdf-card.is-active {
    cursor: default;
  }
}