.jf-flipbook {
  --paper: #fdfaf5;
  --shadow: rgba(0, 0, 0, 0.12);
  --shadow-strong: rgba(0, 0, 0, 0.22);
  --ink: #1f2933;
  --accent: #805ad5;
  --bg: radial-gradient(circle at 30% 30%, #ffffff, #f3f4f6 60%, #e5e7eb 100%);
  margin: 0;
  color: var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.jf-flipbook .jf-stage {
  width: min(1100px, 100vw);
  padding: clamp(16px, 4vw, 48px);
  text-align: center;
}

.jf-flipbook .jf-viewer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  margin: 0 auto;
  max-width: 100%;
  padding: 0 0 32px;
  width: 100%;
}

.jf-flipbook .jf-book-wrapper {
  position: relative;
  width: clamp(160px, 50vw, 960px);
  padding-inline: clamp(20px, 8vw, 120px);
  margin: 0 auto;
  overflow: visible;
  display: flex;
  justify-content: center;
}

.jf-flipbook .jf-book {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  background: transparent;
  overflow: visible;
  transform-style: preserve-3d;
  perspective: 1600px;
  perspective-origin: center center;
  --book-shift: 0%;
  --book-tilt-x: -3deg;
  --book-tilt-y: 1.6deg;
  transform: translateX(var(--book-shift)) rotateX(var(--book-tilt-x)) rotateY(var(--book-tilt-y));
  transition: transform 0.45s ease-in-out;
}

.jf-flipbook .jf-book::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 1px;
  background: rgba(0, 0, 0, .04);
  pointer-events: none;
  z-index: 10;
}

.jf-flipbook .jf-page {
  position: absolute;
  inset: 0;
  transform-origin: left center;
  transform-style: preserve-3d;
  transition: transform 1s ease;
  transform: rotateY(var(--tilt, 0deg));
  cursor: pointer;
}

.jf-flipbook .jf-page::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(
    90deg,
    rgba(0, 0, 0, 0.2) 0%,
    rgba(0, 0, 0, 0) 20%,
    rgba(255, 255, 255, 1) 50%,
    rgba(0, 0, 0, 0.1) 80%,
    rgba(0, 0, 0, 0.15) 100%
  );
  opacity: 0.55;
  mix-blend-mode: multiply;
  transition: all .4s ease;
  border-top-right-radius: 4px;
  border-bottom-right-radius: 4px;
}

.jf-flipbook .jf-page:hover::after {
  opacity: 1;
}

.jf-flipbook .jf-page.flipped {
  --tilt: -180deg;
}

.jf-flipbook .jf-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  overflow: hidden;
  display: grid;
  place-items: center;
  background: var(--paper);
}

.jf-flipbook .jf-face embed {
  width: 100%;
  height: 100%;
  border: none;
}

.jf-flipbook .jf-face img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.jf-flipbook .jf-face.front {
  border-top-right-radius: 4px;
  border-bottom-right-radius: 4px;
  transition: border-radius 0.3s ease;
}

.jf-flipbook .jf-page.flipped .jf-face.front {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  border-top-left-radius: 4px;
  border-bottom-left-radius: 4px;
  transition: border-radius 0.3s ease;
}

.jf-flipbook .jf-face.front img {
  border-top-right-radius: 4px;
  border-bottom-right-radius: 4px;
  transition: border-radius 0.3s ease;
}

.jf-flipbook .jf-page.flipped .jf-face.front img {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
  border-top-left-radius: 4px;
  border-bottom-left-radius: 4px;
  transition: border-radius 0.3s ease;
}

.jf-flipbook .jf-face.back {
  transform: rotateY(180deg);
  background: linear-gradient(180deg, #f8f4ec 0%, #f4efe5 100%);
  border-top-left-radius: 4px;
  border-bottom-left-radius: 4px;
  transition: border-radius 0.3s ease;
}

.jf-flipbook .jf-placeholder {
  font-weight: 600;
  color: #9ca3af;
  letter-spacing: 0.04em;
}

.jf-flipbook .jf-nav-row {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.jf-flipbook .jf-nav-btn {
  border: none;
  background: white;
  color: var(--ink);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  font-size: 28px;
  cursor: pointer;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.12);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  padding: 0;
}

.jf-flipbook .jf-nav-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  box-shadow: none;
}

.jf-flipbook .jf-nav-btn:not(:disabled):hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 26px rgba(0, 0, 0, 0.16);
}

@media (max-width: 768px) {
  .jf-flipbook .jf-nav-btn {
    width: 44px;
    height: 44px;
    font-size: 22px;
  }

  .jf-flipbook .jf-book {
    aspect-ratio: 2 / 3;
  }

  .jf-flipbook .jf-book-wrapper {
    padding-inline: clamp(8px, 4vw, 32px);
  }
}