/* Applied AI ebook — Amazon-ready reader theme (navy / teal cover match) */

.ebook-reader {
  background: var(--bg);
  color: var(--navy);
  margin: 0;
}

.ebook-toolbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 0.75rem 1.25rem;
  background: var(--navy);
  color: #fff;
}

.ebook-toolbar-brand {
  font-weight: 700;
  color: #fff;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.ebook-toolbar-brand:hover {
  color: var(--teal-soft);
  text-decoration: none;
}

.ebook-toolbar-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.ebook-toolbar .btn-secondary {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.35);
}

.ebook-toolbar .btn-secondary:hover {
  border-color: var(--teal);
  color: var(--teal-soft);
}

.ebook-page {
  max-width: 44rem;
  margin: 0 auto;
  padding: 0 1.25rem 4rem;
}

/* Cover spread */
.ebook-cover-page {
  display: grid;
  grid-template-columns: minmax(180px, 240px) 1fr;
  gap: 2rem;
  align-items: center;
  padding: 2.5rem 0 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
}

.ebook-cover-img {
  width: 100%;
  height: auto;
  border-radius: 4px;
  box-shadow: 0 12px 40px rgba(26, 39, 68, 0.25);
  background: var(--navy);
}

.ebook-cover-meta h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  line-height: 1.2;
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.ebook-series {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--teal-dark);
  background: var(--teal-soft);
  padding: 0.3rem 0.65rem;
  border-radius: 6px;
  margin: 0 0 0.85rem;
}

.ebook-subtitle {
  color: var(--slate);
  font-size: 1.05rem;
  margin: 0 0 1.25rem;
  font-style: italic;
}

.ebook-author {
  font-weight: 700;
  font-size: 1.1rem;
  margin: 0 0 0.25rem;
}

.ebook-publisher {
  color: var(--slate);
  font-size: 0.88rem;
  margin: 0;
}

/* TOC */
.ebook-toc-wrap {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem 1.5rem 1.25rem;
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow);
}

.ebook-toc-wrap h2 {
  margin: 0 0 1rem;
  font-size: 1.15rem;
}

.ebook-toc {
  list-style: none;
  padding: 0;
  margin: 0;
  columns: 1;
}

.ebook-toc li {
  margin: 0.35rem 0;
  break-inside: avoid;
}

.ebook-toc a {
  color: var(--navy);
  text-decoration: none;
  font-size: 0.92rem;
  line-height: 1.4;
}

.ebook-toc a:hover {
  color: var(--teal-dark);
  text-decoration: underline;
}

.ebook-toc .toc-h1 {
  margin-top: 0.85rem;
  font-weight: 700;
}

.ebook-toc .toc-h1:first-child {
  margin-top: 0;
}

.ebook-toc .toc-h2 {
  padding-left: 0.85rem;
  font-weight: 500;
}

/* Body */
.ebook-body {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  box-shadow: var(--shadow);
  line-height: 1.7;
  font-size: 1.02rem;
}

.ebook-body h1 {
  font-size: clamp(1.35rem, 3vw, 1.65rem);
  margin: 2.5rem 0 1rem;
  padding-top: 1.25rem;
  border-top: 2px solid var(--navy);
  color: var(--navy);
  letter-spacing: -0.02em;
}

.ebook-body h1:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: none;
}

.ebook-body h2 {
  font-size: 1.25rem;
  margin: 2rem 0 0.75rem;
  color: var(--navy);
  padding-bottom: 0.35rem;
  border-bottom: 1px solid color-mix(in srgb, var(--teal) 35%, var(--border));
}

.ebook-body h3 {
  font-size: 1.08rem;
  margin: 1.5rem 0 0.5rem;
  color: var(--teal-dark);
}

.ebook-body h4 {
  font-size: 1rem;
  margin: 1.25rem 0 0.4rem;
}

.ebook-body p {
  margin: 0 0 1rem;
}

.ebook-body ul,
.ebook-body ol {
  margin: 0 0 1.15rem;
  padding-left: 1.35rem;
}

.ebook-body li {
  margin: 0.35rem 0;
}

.ebook-body strong {
  color: var(--navy);
}

.ebook-body a {
  color: var(--teal-dark);
}

.ebook-body code {
  font-size: 0.88em;
  background: var(--bg);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
}

.ebook-body pre {
  background: var(--navy);
  color: #e2e8f0;
  padding: 1rem 1.1rem;
  border-radius: 10px;
  overflow-x: auto;
  font-size: 0.85rem;
  margin: 1rem 0 1.25rem;
}

.ebook-body pre code {
  background: transparent;
  padding: 0;
  color: inherit;
}

.ebook-body .table-wrap {
  overflow-x: auto;
  margin: 1.15rem 0 1.5rem;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.ebook-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  margin: 0;
}

.ebook-body th,
.ebook-body td {
  border: 1px solid var(--border);
  padding: 0.55rem 0.7rem;
  text-align: left;
  vertical-align: top;
}

.ebook-body th {
  background: var(--navy);
  color: #fff;
  font-weight: 600;
}

.ebook-body tr:nth-child(even) td {
  background: #f8fafc;
}

.chapter-rule {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

.ebook-end {
  text-align: center;
  padding: 2.5rem 1rem 0;
  color: var(--slate);
  font-size: 0.9rem;
}

.ebook-end p {
  margin: 0.4rem 0;
}

@media (max-width: 700px) {
  .ebook-cover-page {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .ebook-cover-img {
    max-width: 220px;
    margin: 0 auto;
  }

  .ebook-toc .toc-h2 {
    padding-left: 0.5rem;
  }
}

@media print {
  .no-print,
  .ebook-toolbar {
    display: none !important;
  }

  .ebook-reader {
    background: #fff;
  }

  .ebook-page {
    max-width: none;
    padding: 0;
  }

  .ebook-body,
  .ebook-toc-wrap {
    box-shadow: none;
    border: none;
    padding: 0;
  }

  .ebook-cover-page {
    page-break-after: always;
  }

  .ebook-body h1 {
    page-break-before: always;
  }

  .ebook-body h1:first-child {
    page-break-before: avoid;
  }

  a {
    color: inherit;
    text-decoration: none;
  }
}