/* =========================================================
   PDF Flipbook — stylesheet v2.4.0
   ========================================================= */

/* ── Fixed gradient (hardcoded, not overridable) ── */
:root {
  --pdfflip-bg-gradient: linear-gradient(270deg, #521167 0%, #32a4d5 100%);
}

/* ── Default color tokens ── */
.pdfflip-wrapper {
  --pdfflip-controls-bg:  rgba(0, 0, 0, 0.45);
  --pdfflip-accent:       #ffffff;
  --pdfflip-accent-hover: #e0e0e0;
  --pdfflip-btn-bg:       rgba(255,255,255,.15);
  --pdfflip-btn-border:   rgba(255,255,255,.3);
  --pdfflip-text:         #ffffff;
  --pdfflip-text-muted:   rgba(255,255,255,.65);
  --pdfflip-radius:       10px;

  position: relative;
  background: var(--pdfflip-bg-gradient);
  border-radius: var(--pdfflip-radius);
  overflow: hidden;
  box-shadow: 0 10px 48px rgba(0,0,0,.5);
  margin: 1.5em auto;
  box-sizing: border-box;
}

.pdfflip-wrapper.pdfflip-fullscreen-active {
  border-radius: 0;
  width:  100vw !important;
  height: 100vh !important;
}

/* ── Book container (absolute, leaves room for controls) ── */
.pdfflip-book {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 55px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
}

/* ── Slider (mobile) ── */
.pdfflip-slider {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.pdfflip-spread {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  will-change: transform;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.pdfflip-slide-img {
  flex: 1 1 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  user-select: none;
  -webkit-user-drag: none;
}

/* ── Scrollbars (book + zoom scroll container) ── */
.pdfflip-book::-webkit-scrollbar,
.pdfflip-zoom-scroll::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
.pdfflip-book::-webkit-scrollbar-track,
.pdfflip-zoom-scroll::-webkit-scrollbar-track {
  background: rgba(0,0,0,.4);
  border-radius: 10px;
}
.pdfflip-book::-webkit-scrollbar-thumb,
.pdfflip-zoom-scroll::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,.55);
  border: 2px solid rgba(0,0,0,.3);
  border-radius: 10px;
}
.pdfflip-book::-webkit-scrollbar-thumb:hover,
.pdfflip-zoom-scroll::-webkit-scrollbar-thumb:hover {
  background: rgba(255,255,255,.85);
}
.pdfflip-book::-webkit-scrollbar-corner,
.pdfflip-zoom-scroll::-webkit-scrollbar-corner {
  background: rgba(0,0,0,.4);
}

/* ── Loader ── */
.pdfflip-loader {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: rgba(50, 20, 70, 0.85);
  z-index: 99;
  color: var(--pdfflip-text);
  font-size: .875rem;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.pdfflip-spinner {
  width: 42px;
  height: 42px;
  border: 3px solid rgba(255,255,255,.2);
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: pdfflip-spin .7s linear infinite;
}

@keyframes pdfflip-spin { to { transform: rotate(360deg); } }

/* ── Controls bar (absolute at bottom) ── */
.pdfflip-controls {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 55px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 14px;
  background: var(--pdfflip-controls-bg);
  box-sizing: border-box;
  border-top: 1px solid rgba(255,255,255,.1);
  backdrop-filter: blur(6px);
  z-index: 10;
}

/* ── Buttons ── */
.pdfflip-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--pdfflip-btn-bg);
  border: 1px solid var(--pdfflip-btn-border);
  border-radius: 7px;
  color: var(--pdfflip-accent);
  cursor: pointer;
  transition: background .16s, transform .12s;
  flex-shrink: 0;
  padding: 0;
}

.pdfflip-btn svg {
  width: 17px;
  height: 17px;
  pointer-events: none;
}

.pdfflip-btn:hover {
  background: rgba(255,255,255,.28);
  transform: scale(1.1);
}

.pdfflip-btn:active  { transform: scale(.94); }

.pdfflip-btn:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 2px;
}

.pdfflip-btn:disabled {
  opacity: 0.35;
  cursor: default;
  transform: none;
}

/* ── Page counter ── */
.pdfflip-page-info {
  font-size: .78rem;
  color: var(--pdfflip-text-muted);
  min-width: 56px;
  text-align: center;
  font-variant-numeric: tabular-nums;
  letter-spacing: .06em;
  user-select: none;
  font-family: monospace;
}

/* ── Error ── */
.pdfflip-error {
  margin: 1.2em;
  padding: .8em 1.1em;
  background: rgba(200,60,60,.2);
  color: #ffaaaa;
  border-left: 3px solid #ff6666;
  border-radius: 5px;
  font-size: .9rem;
}

/* ── Cover overlay (page 1 / last page) ── */
.pdfflip-cover-overlay,
.pdfflip-lastcover-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 5;
  cursor: pointer;
  background: transparent;
}

.pdfflip-cover-overlay img,
.pdfflip-lastcover-overlay img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
  user-select: none;
  -webkit-user-drag: none;
}

/* ── Responsive ── */
@media (max-width: 600px) {
  .pdfflip-wrapper { height: 75vw !important; }
  .pdfflip-btn     { width: 32px; height: 32px; }
  .pdfflip-btn svg { width: 15px; height: 15px; }
  .pdfflip-slide-img {
      object-fit: cover;
  }
}