/* ==========================================================================
   Custom PDF Viewer — pdf-viewer.css
   Single-column scrollable PDF viewer with transparent frosted-glass backdrop
   ========================================================================== */

/* --------------------------------------------------------------------------
   Overlay — full screen with frosted glass backdrop (matches FlipBook)
   -------------------------------------------------------------------------- */

.pv-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: rgba(8, 5, 18, 0.62);
  backdrop-filter: blur(20px) saturate(170%);
  -webkit-backdrop-filter: blur(20px) saturate(170%);
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.28s ease, visibility 0.28s ease;
}

.pv-overlay.pv-open {
  opacity: 1;
  visibility: visible;
  pointer-events: all;
}

:fullscreen .pv-overlay,
:-webkit-full-screen .pv-overlay,
.pv-overlay:fullscreen,
.pv-overlay:-webkit-full-screen {
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  background: #08060f;
  width: 100vw;
  height: 100vh;
}

/* --------------------------------------------------------------------------
   Modal & Scrollable Container
   -------------------------------------------------------------------------- */

.pv-modal {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: transparent;
  display: flex;
  flex-direction: column;
}

.pv-scroll-container {
  flex: 1 1 100%;
  width: 100%;
  height: 100%;
  overflow-y: auto;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  touch-action: pan-x pan-y;
  padding: 36px 0 100px 0;
  box-sizing: border-box;
  display: block;
  text-align: center;
  position: relative;
}

/* Sleek custom scrollbar */
.pv-scroll-container::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
.pv-scroll-container::-webkit-scrollbar-track {
  background: transparent;
}
.pv-scroll-container::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 10px;
}
.pv-scroll-container::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.38);
}

/* --------------------------------------------------------------------------
   Pages Wrapper & Single Column Pages
   -------------------------------------------------------------------------- */

.pv-pages-wrapper {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 28px;
  width: max-content;
  min-width: 100%;
  margin: 0 auto;
  padding: 0 16px;
  box-sizing: border-box;
}

.pv-page-container {
  position: relative;
  background: #ffffff;
  border-radius: 4px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.42), 0 4px 14px rgba(0, 0, 0, 0.22);
  overflow: hidden;
  display: block;
  flex-shrink: 0;
  margin: 0 auto;
  transition: box-shadow 0.2s ease;
}

.pv-page-container:hover {
  box-shadow: 0 20px 56px rgba(0, 0, 0, 0.52), 0 6px 18px rgba(0, 0, 0, 0.26);
}

.pv-page-canvas {
  display: block;
  width: 100%;
  height: 100%;
  background: #ffffff;
}

.pv-page-number-tag {
  position: absolute;
  bottom: 8px;
  right: 10px;
  font-size: 0.72rem;
  font-weight: 500;
  color: #64748b;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(4px);
  padding: 2px 7px;
  border-radius: 4px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
  z-index: 10;
}

.pv-page-container:hover .pv-page-number-tag {
  opacity: 1;
}

.pv-page-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: #ffffff;
  color: #64748b;
  font-size: 0.85rem;
  gap: 12px;
  z-index: 5;
}

.pv-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid rgba(0, 0, 0, 0.08);
  border-top-color: #4f46e5;
  border-radius: 50%;
  animation: pv-spin 0.75s linear infinite;
}

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

/* --------------------------------------------------------------------------
   Top bar controls — Quick Close
   -------------------------------------------------------------------------- */

.pv-top-close {
  position: absolute;
  top: 18px;
  right: 22px;
  z-index: 100;
  width: 40px;
  height: 40px;
  border-radius: 50% !important;
  background: rgba(20, 14, 32, 0.85) !important;
  backdrop-filter: blur(20px) !important;
  -webkit-backdrop-filter: blur(20px) !important;
  border: 1px solid rgba(255, 255, 255, 0.18) !important;
  color: #ffffff !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  cursor: pointer !important;
  padding: 0 !important;
  outline: none !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.5) !important;
  transition: all 0.18s ease !important;
}

.pv-top-close svg {
  width: 20px !important;
  height: 20px !important;
  stroke: #ffffff !important;
  stroke-width: 2.2 !important;
  display: block !important;
  pointer-events: none !important;
}

.pv-top-close:hover {
  background: rgba(220, 50, 60, 0.9) !important;
  border-color: rgba(255, 120, 130, 0.6) !important;
  color: #ffffff !important;
  transform: scale(1.1) !important;
}

.pv-top-close:active {
  transform: scale(0.92) !important;
}

/* --------------------------------------------------------------------------
   Toolbar — Floating bottom dock (Matches FlipBook)
   -------------------------------------------------------------------------- */

.pv-toolbar {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 4px 10px;
  background: rgba(18, 14, 28, 0.84);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 40px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.58), inset 0 1px 0 rgba(255, 255, 255, 0.14);
  user-select: none;
  -webkit-user-select: none;
  opacity: 1;
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.pv-toolbar.pv-tb-idle,
.pv-idle-dim {
  opacity: 0.25 !important;
}

.pv-toolbar:hover,
.pv-toolbar:focus-within {
  opacity: 1 !important;
}

.pv-sep {
  width: 1px;
  height: 18px;
  background: rgba(255, 255, 255, 0.12);
  margin: 0 3px;
  flex-shrink: 0;
}

.pv-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: rgba(255, 255, 255, 0.75);
  cursor: pointer;
  transition: background 0.15s, color 0.15s, transform 0.12s;
  flex-shrink: 0;
  padding: 0;
  text-decoration: none;
  font-family: inherit;
}

.pv-btn:hover {
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  transform: scale(1.08);
  text-decoration: none;
}

.pv-btn:active {
  transform: scale(0.92);
}

.pv-btn svg {
  pointer-events: none;
}

.pv-page-wrap {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0 2px;
}

.pv-page-in {
  width: 38px;
  height: 26px;
  text-align: center;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.95);
  font-size: 0.82rem;
  font-weight: 500;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s, background 0.15s;
}

.pv-page-in:focus {
  border-color: rgba(180, 155, 240, 0.7);
  background: rgba(255, 255, 255, 0.14);
}

.pv-page-tot {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.45);
  white-space: nowrap;
  padding-right: 2px;
}

.pv-dl {
  text-decoration: none;
}

.pv-close {
  margin-left: 0;
}

/* --------------------------------------------------------------------------
   Responsive Design
   -------------------------------------------------------------------------- */

@media (max-width: 600px) {
  .pv-scroll-container {
    padding: 24px 0 80px 0;
  }
  .pv-pages-wrapper {
    gap: 16px;
    padding: 0 8px;
  }
  .pv-toolbar {
    bottom: 10px;
    gap: 2px;
    padding: 3px 6px;
    max-width: calc(100vw - 16px);
  }
  .pv-btn {
    width: 32px;
    height: 32px;
  }
  .pv-page-in {
    width: 32px;
    height: 24px;
    font-size: 0.75rem;
  }
  .pv-page-tot {
    font-size: 0.75rem;
  }
}