/* NC.EL.84.15 — Cover: transparent eagle SVG; paper: crop wide PNG seal */
.nc-el-library-reader {
  max-width: 1100px;
  margin: 0 auto 2rem;
  --nc-el-book-indent: 5ch;
}

.nc-el-library-reader-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1rem;
  margin-bottom: 1rem;
  padding: 0.75rem 1rem;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
}

.nc-el-library-reader-toolbar-left,
.nc-el-library-reader-toolbar-right {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
}

.nc-el-library-reader-back {
  font-size: 0.9rem;
  color: #1e40af;
  text-decoration: none;
}

.nc-el-library-reader-title {
  font-weight: 600;
  font-size: 0.95rem;
}

.nc-el-library-reader-badge {
  font-size: 0.75rem;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background: #dbeafe;
  color: #1e3a8a;
}

.nc-el-library-reader-nav {
  font: inherit;
  cursor: pointer;
  padding: 0.35rem 0.75rem;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  background: #fff;
}

.nc-el-library-reader-nav:hover:not(:disabled) {
  background: #eff6ff;
}

.nc-el-library-reader-pager {
  min-width: 8rem;
  text-align: center;
  font-size: 0.9rem;
  color: #334155;
}

.nc-el-library-reader-stage-wrap {
  margin-bottom: 0.5rem;
}

.nc-el-library-reader-stage {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding: 1rem 0 0.5rem;
  background: linear-gradient(180deg, #eef2f7 0%, #f8fafc 100%);
  border-radius: 8px;
  min-height: min(1320px, 92vh);
  flex: 1 1 auto;
}

.nc-el-reader-stage-layout {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 0.75rem;
  width: 100%;
  max-width: 1060px;
  margin: 0 auto;
  padding: 0 0.5rem;
}

.nc-el-reader-nav-cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem 0.75rem;
}

.nc-el-reader-nav-cluster--bottom {
  margin: 0.85rem auto 0;
  padding: 0.65rem 1rem;
  max-width: 1060px;
  background: #fff;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.06);
}

/* Mini flip control — bottom-right corner, does not cover title/body */
.nc-el-reader-nav-cluster--book-edge {
  position: absolute;
  right: 0.45rem;
  bottom: 0.55rem;
  top: auto;
  transform: none;
  z-index: 30;
  flex-direction: column;
  flex: 0 0 auto;
  gap: 0.12rem;
  padding: 0.22rem 0.18rem;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.12);
  min-width: 0;
  pointer-events: auto;
}

.nc-el-reader-nav-btn--mini {
  width: 1.65rem;
  height: 1.65rem;
  min-width: 0;
  padding: 0;
  line-height: 1;
  font-size: 1rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.nc-el-reader-nav-pager--compact {
  min-width: 0 !important;
  max-width: 3.1rem;
  font-size: 0.62rem;
  line-height: 1.2;
  padding: 0.08rem 0;
  color: #475569;
  white-space: nowrap;
}

/* 960×1280 spread (2× prior) */
.nc-el-library-reader-book {
  box-shadow: 0 16px 48px rgba(15, 23, 42, 0.14);
  width: min(960px, 100%);
  height: min(1280px, 88vh);
  margin: 0 auto;
  background: #fff;
  border: 1px solid #cbd5e1;
  border-radius: 4px;
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

#nc-el-reader-book.nc-el-reader-ready > .nc-el-reader-sheet {
  display: none !important;
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

#nc-el-reader-book.nc-el-reader-ready > .nc-el-reader-sheet.is-active {
  display: block !important;
  z-index: 2;
}

.nc-el-reader-page-inner {
  height: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

.nc-el-reader-page-shell {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 100%;
  position: relative;
  overflow: hidden;
  background: #fff;
}

.nc-el-reader-page-shell--paper {
  background: #fffdf8;
}

/* Watermark layers */
.nc-el-reader-watermark {
  pointer-events: none;
  z-index: 0;
}

.nc-el-reader-watermark img {
  display: block;
  margin: 0 auto;
}

/* NC.EL.84.17 — Cover: official CCU logo; paper: faint seal watermark only */

.nc-el-reader-cover-logo-zone {
  position: absolute;
  left: 3.5rem;
  right: 0;
  top: 4%;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  z-index: 2;
  pointer-events: none;
}

.nc-el-reader-cover-logo {
  width: min(128px, 30vw);
  aspect-ratio: 1 / 1;
  margin: 0 auto;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.38);
}

.nc-el-reader-cover-logo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  display: block;
}

/* Paper — faint centered seal */
.nc-el-reader-watermark--paper {
  position: absolute;
  left: 50%;
  top: 52%;
  transform: translate(-50%, -50%);
  width: min(196px, 42vw);
  aspect-ratio: 1 / 1;
  height: auto;
  z-index: 1;
}

.nc-el-reader-watermark--paper img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  opacity: 0.15;
}

/* Edge nav on dark cover/paywall — not a white box on navy */
#nc-el-reader-book:has(.nc-el-reader-sheet.is-active .nc-el-reader-cover-inner) .nc-el-reader-nav-cluster--book-edge,
#nc-el-reader-book:has(.nc-el-reader-sheet.is-active .nc-el-reader-paywall-inner) .nc-el-reader-nav-cluster--book-edge {
  background: rgba(8, 20, 40, 0.88);
  border-color: rgba(201, 169, 110, 0.45);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
}

#nc-el-reader-book:has(.nc-el-reader-sheet.is-active .nc-el-reader-cover-inner) .nc-el-reader-nav-cluster--book-edge .nc-el-library-reader-nav,
#nc-el-reader-book:has(.nc-el-reader-sheet.is-active .nc-el-reader-paywall-inner) .nc-el-reader-nav-cluster--book-edge .nc-el-library-reader-nav {
  background: rgba(26, 58, 92, 0.95);
  border-color: rgba(201, 169, 110, 0.35);
  color: #f8fafc;
}

#nc-el-reader-book:has(.nc-el-reader-sheet.is-active .nc-el-reader-cover-inner) .nc-el-reader-nav-pager--compact,
#nc-el-reader-book:has(.nc-el-reader-sheet.is-active .nc-el-reader-paywall-inner) .nc-el-reader-nav-pager--compact {
  color: rgba(248, 250, 252, 0.88);
}


.nc-el-reader-cover-content,
.nc-el-reader-paywall-content {
  position: absolute;
  left: 3.5rem;
  right: 0;
  bottom: 0;
  top: 24%;
  z-index: 5;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  overflow: hidden;
  padding: 0 2rem 3.25rem;
  margin-top: 0;
  width: auto;
}

.nc-el-reader-cover-ribbon {
  margin: 0 0 0.85rem;
  font-size: 0.7rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: #c9a96e;
  font-weight: 600;
  font-family: Georgia, 'Times New Roman', serif;
}

.nc-el-reader-cover-spine,
.nc-el-reader-cover-deco {
  position: absolute;
  pointer-events: none;
}

.nc-el-reader-page-shell > .nc-el-reader-page-head,
.nc-el-reader-page-shell > .nc-el-reader-page-body,
.nc-el-reader-page-shell > .nc-el-reader-page-footer {
  position: relative;
  z-index: 3;
}

.nc-el-reader-page-head {
  flex: 0 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1.65rem;
  border-bottom: 1px solid #e2e8f0;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #64748b;
  background: rgba(255, 253, 248, 0.96);
}

.nc-el-reader-page-body {
  flex: 1 1 auto;
  overflow: auto;
  padding: 1.2rem 2rem 1.35rem 2.15rem;
  font-family: Georgia, 'Times New Roman', Times, serif;
  font-size: 1.03rem;
  line-height: 1.72;
  color: #1c1917;
  background: transparent;
  position: relative;
  z-index: 2;
  -webkit-overflow-scrolling: touch;
  hyphens: auto;
}

.nc-el-library-reader .nc-el-reader-page-body p {
  margin: 0 0 0.95em;
  text-align: justify;
  text-indent: var(--nc-el-book-indent);
}

.nc-el-library-reader .nc-el-reader-page-body h1,
.nc-el-library-reader .nc-el-reader-page-body h2,
.nc-el-library-reader .nc-el-reader-page-body h3,
.nc-el-library-reader .nc-el-reader-page-body h4,
.nc-el-library-reader .nc-el-reader-page-body .nc-el-handbook-cover,
.nc-el-library-reader .nc-el-reader-page-body .nc-el-handbook-cover-apa,
.nc-el-library-reader .nc-el-reader-page-body blockquote,
.nc-el-library-reader .nc-el-reader-page-body figure {
  text-indent: 0;
}

.nc-el-library-reader .nc-el-reader-page-body h1,
.nc-el-library-reader .nc-el-reader-page-body h2,
.nc-el-library-reader .nc-el-reader-page-body h3,
.nc-el-library-reader .nc-el-reader-page-body h4 {
  font-family: Georgia, 'Times New Roman', Times, serif;
  font-size: 1.14rem;
  font-weight: 700;
  color: #1a3a5c;
  margin: 1.15rem 0 0.6rem;
  line-height: 1.38;
}

.nc-el-library-reader .nc-el-reader-page-body h2 {
  font-size: 1.2rem;
  border-bottom: 1px solid rgba(26, 58, 92, 0.14);
  padding-bottom: 0.28rem;
}

.nc-el-library-reader .nc-el-reader-page-body ul,
.nc-el-library-reader .nc-el-reader-page-body ol {
  margin: 0.65em 0 1.05em;
  padding-left: calc(var(--nc-el-book-indent) + 1.35em) !important;
  margin-left: 0 !important;
  list-style-position: outside !important;
}

.nc-el-library-reader .nc-el-reader-page-body ul {
  list-style-type: disc !important;
}

.nc-el-library-reader .nc-el-reader-page-body ol {
  list-style-type: decimal !important;
}

.nc-el-library-reader .nc-el-reader-page-body li {
  margin-bottom: 0.62em;
  text-align: justify;
  padding-left: 0.25em;
  text-indent: 0;
}

.nc-el-library-reader .nc-el-reader-page-body li p {
  text-indent: 0;
  margin: 0;
}

.nc-el-library-reader .nc-el-reader-page-body li::marker {
  font-weight: 700;
  color: #1a3a5c;
}

.nc-el-library-reader .nc-el-reader-page-body .nc-el-handbook-publisher,
.nc-el-library-reader .nc-el-reader-page-body .nc-el-handbook-doc-type {
  text-align: center;
  text-indent: 0;
}

.nc-el-reader-page-footer {
  flex: 0 0 auto;
  padding: 0.55rem 1.65rem;
  border-top: 1px solid #e2e8f0;
  font-size: 0.78rem;
  color: #475569;
  text-align: center;
  font-style: italic;
  background: rgba(255, 253, 248, 0.96);
  z-index: 2;
}

.nc-el-reader-cover-inner .nc-el-reader-cover-footer,
.nc-el-reader-paywall-inner .nc-el-reader-cover-footer {
  background: transparent !important;
  border-top: 1px solid rgba(201, 169, 110, 0.35);
  color: rgba(255, 255, 255, 0.9);
  margin-top: 0.85rem;
}

.nc-el-reader-cover-inner {
  position: relative;
  padding: 0;
  color: #fff;
  isolation: isolate;
  background:
    linear-gradient(135deg, rgba(201, 169, 110, 0.14) 0%, transparent 42%),
    linear-gradient(180deg, #081428 0%, #1a3a5c 26%, #1e4078 54%, #122649 100%);
}

.nc-el-reader-cover-spine {
  left: 0;
  top: 0;
  bottom: 0;
  width: 2.85rem;
  z-index: 1;
  background: linear-gradient(90deg, #050d1c 0%, #0f2244 52%, rgba(15, 34, 68, 0.55) 100%);
  box-shadow: inset -5px 0 14px rgba(0, 0, 0, 0.38), 3px 0 10px rgba(0, 0, 0, 0.18);
}

.nc-el-reader-cover-spine::after {
  content: '';
  position: absolute;
  right: 0.65rem;
  top: 10%;
  bottom: 10%;
  width: 1px;
  background: repeating-linear-gradient(
    180deg,
    rgba(201, 169, 110, 0.42) 0 5px,
    transparent 5px 13px
  );
}

.nc-el-reader-cover-deco {
  inset: 0;
  z-index: 0;
  background:
    radial-gradient(circle at 78% 16%, rgba(201, 169, 110, 0.16) 0%, transparent 36%),
    linear-gradient(155deg, transparent 40%, rgba(255, 255, 255, 0.035) 41%, transparent 42%),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 30px,
      rgba(255, 255, 255, 0.028) 31px
    );
}

.nc-el-reader-cover-inner .nc-el-reader-cover-title {
  font-family: Georgia, 'Times New Roman', serif;
  font-size: clamp(1.45rem, 3vw, 2.05rem);
  line-height: 1.28;
  margin: 0 0 0.85rem;
  max-width: 100%;
  color: #f8fafc;
  font-weight: 700;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.35);
  padding: 0.85rem 0;
  border-top: 2px solid rgba(201, 169, 110, 0.55);
  border-bottom: 2px solid rgba(201, 169, 110, 0.55);
}

.nc-el-reader-cover-code {
  font-size: 1.05rem;
  margin: 0 0 1.25rem;
  color: #c9a96e;
  letter-spacing: 0.06em;
  font-weight: 600;
}

.nc-el-reader-cover-hint {
  font-size: 0.88rem;
  max-width: 92%;
  color: rgba(248, 250, 252, 0.88);
  margin: 0 auto;
  line-height: 1.45;
}

.nc-el-reader-cover-meta {
  margin-top: 1.5rem;
  color: rgba(201, 169, 110, 0.82);
  font-size: 0.88rem;
}

.nc-el-reader-cover-footer {
  margin-top: 1rem;
  color: rgba(255, 255, 255, 0.88);
  border-top-color: rgba(201, 169, 110, 0.35);
}

.nc-el-library-reader-nav:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.nc-el-library-reader-foot {
  text-align: center;
  margin-top: 0.75rem;
  font-size: 0.82rem;
}

.nc-el-library-reader-badge-preview {
  background: #fef3c7;
  color: #92400e;
}

.nc-el-library-reader-preview-banner {
  margin: 0 0 1rem;
  padding: 0.65rem 1rem;
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 8px;
  font-size: 0.92rem;
}

.nc-el-reader-paywall-inner {
  position: relative;
  min-height: 100%;
  padding: 0;
  color: #fff;
  isolation: isolate;
  background:
    linear-gradient(135deg, rgba(201, 169, 110, 0.12) 0%, transparent 40%),
    linear-gradient(180deg, #0c1a3a 0%, #1a3a5c 40%, #312e81 100%);
}

.nc-el-reader-paywall-content {
  width: min(92%, 560px);
}

.nc-el-reader-paywall-inner h2 {
  margin: 0 0 0.75rem;
  color: #f8fafc;
  font-size: 1.5rem;
  font-family: Georgia, 'Times New Roman', serif;
}

.nc-el-reader-paywall-inner .muted {
  color: rgba(255, 255, 255, 0.85);
}

.nc-el-reader-paywall-inner .nc-el-lms-btn {
  margin-top: 0.75rem;
}

@media (max-width: 720px) {
  .nc-el-reader-stage-layout {
    flex-direction: column;
    align-items: center;
  }

  .nc-el-reader-nav-cluster--book-edge {
    display: none;
  }

  .nc-el-library-reader-stage {
    min-height: min(720px, 85vh);
  }

  .nc-el-library-reader-book {
    height: min(960px, 82vh);
  }

  .nc-el-reader-page-body {
    font-size: 0.9rem;
  }

  .nc-el-reader-watermark {
    width: min(240px, 78%);
  }
}