/* ============================================================
   DataPartner365 — Data Engineering Handbook (/ebook/*)
   Hergebruikt blog.css (typografie, .code-block, .comparison-table,
   .highlight-box, .blog-navigation) — dit bestand voegt alleen toe
   wat specifiek is voor het e-book: hub, hoofdstuk-meta, TOC, CTA's.
   ============================================================ */

:root {
  --primary-color:   #1B2232;
  --secondary-color: #4F79E0;
  --accent:          #4F79E0;
  --accent-hover:    #3B6ACF;
  --accent-light:    #EEF2FF;
  --light-color:     #F8F9FA;
  --card-bg:         #FFFFFF;
  --border:          #E5E7EB;
  --text-color:      #111827;
  --text-light:      #6B7280;
  --text-muted:      #9CA3AF;
  --success-color:   #10B981;
  --warning-color:   #F59E0B;
}

/* ── Breadcrumb ─────────────────────────────────────────── */
.ebook-breadcrumb {
  max-width: 900px;
  margin: 18px auto 0;
  padding: 0 24px;
  font-size: 0.82rem;
  color: var(--text-muted);
}
.ebook-breadcrumb a { color: var(--text-light); text-decoration: none; }
.ebook-breadcrumb a:hover { color: var(--accent); text-decoration: underline; }
.ebook-breadcrumb span[aria-current] { color: var(--text-color); font-weight: 600; }

/* ── Hub hero ───────────────────────────────────────────── */
.ebook-hero {
  background: linear-gradient(135deg, var(--primary-color) 0%, #23304F 55%, var(--secondary-color) 130%);
  color: #fff;
  padding: 56px 24px 60px;
  text-align: center;
}
.ebook-hero-inner { max-width: 820px; margin: 0 auto; }
.ebook-hero .ebook-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.22);
  padding: 6px 16px; border-radius: 999px; font-size: 0.78rem; font-weight: 700;
  letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: 22px;
}
.ebook-hero h1 { font-size: clamp(1.9rem, 4vw, 3rem); font-weight: 800; line-height: 1.15; margin: 0 0 14px; color: #fff; }
.ebook-hero p.ebook-hero-lead { font-size: clamp(1.05rem, 1.8vw, 1.25rem); color: rgba(255,255,255,0.9); margin: 0 0 8px; }
.ebook-hero p.ebook-hero-sub { font-size: 1rem; color: rgba(255,255,255,0.75); max-width: 640px; margin: 0 auto 30px; }
.ebook-hero-ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.ebook-btn {
  display: inline-flex; align-items: center; gap: 9px; padding: 13px 26px;
  border-radius: 10px; font-weight: 700; font-size: 0.95rem; text-decoration: none;
  border: none; cursor: pointer; transition: all 0.2s;
}
.ebook-btn-primary { background: #fff; color: var(--primary-color); }
.ebook-btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0,0,0,0.25); }
.ebook-btn-ghost { background: rgba(255,255,255,0.08); color: #fff; border: 1.5px solid rgba(255,255,255,0.35); }
.ebook-btn-ghost:hover { background: rgba(255,255,255,0.16); }
.ebook-hero-stats { display: flex; gap: 34px; justify-content: center; margin-top: 40px; flex-wrap: wrap; }
.ebook-hero-stats div { text-align: center; }
.ebook-hero-stats .n { font-size: 1.5rem; font-weight: 800; color: #fff; }
.ebook-hero-stats .l { font-size: 0.78rem; color: rgba(255,255,255,0.7); }

/* ── Hub sections ───────────────────────────────────────── */
.ebook-section { max-width: 1180px; margin: 0 auto; padding: 56px 24px; }
.ebook-section-head { text-align: center; max-width: 680px; margin: 0 auto 36px; }
.ebook-section-head .ebook-kicker { color: var(--accent); font-weight: 700; font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 10px; display: block; }
.ebook-section-head h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); color: var(--primary-color); margin: 0 0 10px; }
.ebook-section-head p { color: var(--text-light); font-size: 1rem; margin: 0; }

/* Category tabs */
.ebook-category-tabs { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin-bottom: 32px; }
.ebook-category-tab {
  padding: 8px 16px; border-radius: 999px; border: 1.5px solid var(--border);
  background: var(--card-bg); color: var(--text-color); font-size: 0.84rem; font-weight: 600;
  cursor: pointer; transition: all 0.15s;
}
.ebook-category-tab:hover { border-color: var(--accent); color: var(--accent); }
.ebook-category-tab.active { background: var(--secondary-color); border-color: var(--secondary-color); color: #fff; }

/* Chapter grid */
.ebook-chapter-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 18px; }
.ebook-category-group { margin-bottom: 40px; }
.ebook-category-group h3 { font-size: 1.05rem; color: var(--primary-color); margin: 0 0 16px; display: flex; align-items: center; gap: 10px; }
.ebook-category-group h3 .count { font-size: 0.75rem; font-weight: 600; color: var(--text-muted); background: var(--light-color); padding: 2px 10px; border-radius: 999px; }

.ebook-chapter-card {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: 14px;
  padding: 20px; text-decoration: none; color: inherit; display: flex; flex-direction: column;
  transition: all 0.18s; position: relative;
}
.ebook-chapter-card.published:hover { transform: translateY(-4px); box-shadow: 0 10px 24px rgba(0,0,0,0.1); border-color: var(--accent); }
.ebook-chapter-card.planned { opacity: 0.6; cursor: default; }
.ebook-chapter-num { font-size: 0.72rem; font-weight: 800; color: var(--accent); margin-bottom: 6px; letter-spacing: 0.04em; }
.ebook-chapter-card h4 { font-size: 0.98rem; color: var(--primary-color); margin: 0 0 8px; line-height: 1.35; }
.ebook-chapter-meta-row { display: flex; gap: 10px; flex-wrap: wrap; margin-top: auto; padding-top: 10px; }
.ebook-badge { font-size: 0.7rem; font-weight: 700; padding: 3px 9px; border-radius: 999px; }
.ebook-badge-beginner { background: #DCFCE7; color: #15803D; }
.ebook-badge-intermediate { background: #FEF9C3; color: #A16207; }
.ebook-badge-advanced { background: #FEE2E2; color: #B91C1C; }
.ebook-badge-soon { background: var(--light-color); color: var(--text-muted); }
.ebook-badge-read { background: var(--accent-light); color: var(--accent); }
.ebook-chapter-card .read-check { position: absolute; top: 16px; right: 16px; color: var(--success-color); font-size: 1.1rem; }

/* Popular / recent strips */
.ebook-links-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }
.ebook-link-card {
  border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px;
  text-decoration: none; color: var(--primary-color); background: var(--card-bg);
  transition: all 0.18s; display: flex; align-items: center; gap: 12px;
}
.ebook-link-card:hover { border-color: var(--accent); background: var(--accent-light); }
.ebook-link-card i { color: var(--accent); font-size: 1.2rem; flex-shrink: 0; }

/* Progress */
.ebook-progress-wrap { max-width: 680px; margin: 0 auto; background: var(--card-bg); border: 1px solid var(--border); border-radius: 16px; padding: 24px 28px; }
.ebook-progress-bar-track { height: 10px; background: var(--light-color); border-radius: 6px; overflow: hidden; margin: 12px 0 6px; }
.ebook-progress-bar-fill { height: 100%; background: linear-gradient(90deg, var(--secondary-color), #6D28D9); border-radius: 6px; transition: width 0.4s; }

/* ── PDF lead-gen ───────────────────────────────────────── */
.ebook-pdf-cta {
  max-width: 720px; margin: 0 auto; background: linear-gradient(135deg, var(--primary-color), #2A3B63);
  border-radius: 18px; padding: 36px; color: #fff; text-align: center;
}
.ebook-pdf-cta i.icon { font-size: 2.2rem; margin-bottom: 14px; display: block; opacity: 0.9; }
.ebook-pdf-cta h3 { color: #fff; font-size: 1.3rem; margin: 0 0 10px; }
.ebook-pdf-cta p { color: rgba(255,255,255,0.82); font-size: 0.94rem; margin: 0 0 22px; }
.ebook-pdf-form { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; max-width: 480px; margin: 0 auto; }
.ebook-pdf-form input {
  flex: 1; min-width: 180px; padding: 12px 14px; border-radius: 9px; border: none; font-size: 0.9rem;
}
.ebook-pdf-form button {
  padding: 12px 22px; border-radius: 9px; border: none; background: #fff; color: var(--primary-color);
  font-weight: 700; cursor: pointer; transition: all 0.2s;
}
.ebook-pdf-form button:hover { transform: translateY(-1px); }
.ebook-pdf-note { font-size: 0.76rem; color: rgba(255,255,255,0.6); margin-top: 14px; }
.ebook-pdf-success { display: none; text-align: center; }
.ebook-pdf-success.show { display: block; }
.ebook-pdf-success i { font-size: 2rem; color: #6EE7B7; margin-bottom: 10px; display: block; }
.ebook-pdf-success a.download-link {
  display: inline-flex; align-items: center; gap: 8px; margin-top: 14px; background: #fff;
  color: var(--primary-color); padding: 12px 24px; border-radius: 9px; font-weight: 700; text-decoration: none;
}

/* ============================================================
   CHAPTER PAGE
   ============================================================ */
.ebook-chapter-header { background: linear-gradient(135deg, var(--primary-color), #2A3B63); color: #fff; padding: 34px 24px 30px; }
.ebook-chapter-header-inner { max-width: 900px; margin: 0 auto; }
.ebook-chapter-header h1 { color: #fff; font-size: clamp(1.4rem, 3vw, 2rem); margin: 0 0 12px; }
.ebook-chapter-header .summary { color: rgba(255,255,255,0.85); font-size: 0.98rem; margin: 0 0 18px; max-width: 760px; }
.ebook-chapter-meta { display: flex; gap: 18px; flex-wrap: wrap; font-size: 0.82rem; color: rgba(255,255,255,0.75); }
.ebook-chapter-meta span { display: flex; align-items: center; gap: 6px; }

.ebook-chapter-body { max-width: 900px; margin: 0 auto; padding: 40px 24px 60px; }

/* Table of contents */
.ebook-toc { background: var(--light-color); border: 1px solid var(--border); border-radius: 14px; padding: 22px 24px; margin-bottom: 36px; }
.ebook-toc h2 { font-size: 0.92rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-light); margin: 0 0 14px; border: none; padding: 0; }
.ebook-toc ol { margin: 0; padding-left: 20px; columns: 1; }
.ebook-toc li { margin-bottom: 8px; font-size: 0.9rem; }
.ebook-toc a { color: var(--primary-color); text-decoration: none; font-weight: 600; }
.ebook-toc a:hover { color: var(--accent); text-decoration: underline; }
@media (min-width: 700px) { .ebook-toc ol { columns: 2; column-gap: 32px; } }

/* Code blocks: reuse .code-block from blog.css, add copy button + language label */
.ebook-code-wrap { position: relative; margin: 25px 0; }
.ebook-code-wrap .code-block { margin: 0; padding-top: 40px; }
.ebook-code-bar {
  position: absolute; top: 0; left: 0; right: 0; height: 34px;
  display: flex; align-items: center; justify-content: space-between; padding: 0 14px;
  background: rgba(255,255,255,0.06); border-radius: 8px 8px 0 0; font-size: 0.72rem; color: #9CA3AF;
  text-transform: uppercase; letter-spacing: 0.05em; font-weight: 700;
}
.ebook-copy-btn {
  background: rgba(255,255,255,0.1); border: none; color: #E5E7EB; padding: 4px 10px; border-radius: 6px;
  cursor: pointer; font-size: 0.72rem; font-weight: 700; text-transform: none; letter-spacing: 0;
  display: inline-flex; align-items: center; gap: 5px; transition: background 0.15s;
}
.ebook-copy-btn:hover { background: rgba(255,255,255,0.2); }

/* Interview questions */
.ebook-interview-q { background: var(--accent-light); border-left: 4px solid var(--accent); border-radius: 0 10px 10px 0; padding: 16px 20px; margin: 16px 0; }
.ebook-interview-q strong { color: var(--primary-color); display: block; margin-bottom: 6px; }

/* CTA boxes embedded in chapter markdown — hidden in print (see below) */
.ebook-ai-cta {
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  background: linear-gradient(135deg, var(--secondary-color), #6D28D9); color: #fff;
  border-radius: 14px; padding: 22px 26px; margin: 32px 0;
}
.ebook-ai-cta i { font-size: 1.8rem; opacity: 0.9; }
.ebook-ai-cta strong { display: block; font-size: 1rem; margin-bottom: 4px; }
.ebook-ai-cta p { margin: 0; font-size: 0.86rem; color: rgba(255,255,255,0.85); }
.ebook-ai-cta-btn {
  margin-left: auto; background: #fff; color: var(--primary-color); padding: 10px 20px;
  border-radius: 8px; font-weight: 700; text-decoration: none; font-size: 0.86rem; white-space: nowrap;
}

.ebook-consultancy-cta {
  background: var(--light-color); border: 1px solid var(--border); border-radius: 14px;
  padding: 22px 26px; margin: 32px 0; text-align: center;
}
.ebook-consultancy-cta p:first-child { color: var(--primary-color); font-size: 1rem; margin: 0 0 6px; }
.ebook-consultancy-cta p { color: var(--text-light); font-size: 0.88rem; margin: 0 0 16px; }
.ebook-consultancy-btn {
  display: inline-flex; align-items: center; gap: 8px; background: var(--secondary-color); color: #fff;
  padding: 11px 24px; border-radius: 9px; font-weight: 700; text-decoration: none; font-size: 0.88rem;
}
.ebook-consultancy-btn:hover { background: var(--accent-hover); }

.ebook-vacancy-cta {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  background: #FFFBEB; border: 1px solid #FDE68A; border-radius: 12px; padding: 16px 20px; margin: 28px 0;
  font-size: 0.9rem; color: #92400E;
}
.ebook-vacancy-cta i { color: #D97706; }
.ebook-vacancy-cta a { margin-left: auto; color: #B45309; font-weight: 700; text-decoration: none; white-space: nowrap; }
.ebook-vacancy-cta a:hover { text-decoration: underline; }

/* Prev/next reuse .blog-navigation / .nav-button from blog.css */

/* Progress mark button */
.ebook-mark-read { display: inline-flex; align-items: center; gap: 8px; margin: 30px 0 0; padding: 10px 18px; border-radius: 9px; border: 1.5px solid var(--border); background: var(--card-bg); color: var(--text-color); font-weight: 600; font-size: 0.86rem; cursor: pointer; }
.ebook-mark-read.done { background: #DCFCE7; border-color: #86EFAC; color: #15803D; }

@media (max-width: 640px) {
  .ebook-section { padding: 40px 18px; }
  .ebook-hero { padding: 44px 18px 46px; }
  .ebook-chapter-body { padding: 30px 16px 46px; }
  .ebook-ai-cta { flex-direction: column; align-items: flex-start; }
  .ebook-ai-cta-btn { margin-left: 0; }
}

/* ============================================================
   PRINT — used both for Ctrl+P on the web page AND by the
   Playwright PDF pipeline (page.pdf() uses print media by default).
   Website-only chrome disappears automatically; content stays.
   ============================================================ */
@media print {
  #dp365-nav, #dp365-footer,
  .ebook-breadcrumb, .blog-navigation,
  .ebook-ai-cta, .ebook-consultancy-cta, .ebook-vacancy-cta,
  .ebook-mark-read, .ebook-code-bar .ebook-copy-btn,
  .dp365-ad-wrap, ins.adsbygoogle {
    display: none !important;
  }
  .ebook-chapter-body { max-width: 100%; padding: 0; }
  .code-block { break-inside: avoid; }
  h2, h3 { break-after: avoid; }
  a { color: inherit; text-decoration: none; }
}

/* ============================================================
   PRINT-ASSEMBLY DOCUMENT (ebook/_print/*.html — the standalone
   book build used to generate the PDF). Not loaded on web pages.
   ============================================================ */
.book-cover {
  min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; background: linear-gradient(135deg, var(--primary-color), #2A3B63); color: #fff;
  page-break-after: always;
}
.book-cover .kicker { text-transform: uppercase; letter-spacing: 0.1em; font-size: 0.85rem; opacity: 0.7; margin-bottom: 18px; }
.book-cover h1 { color: #fff; font-size: 2.6rem; margin: 0 0 16px; }
.book-cover p { color: rgba(255,255,255,0.85); font-size: 1.1rem; max-width: 600px; margin: 0 auto; }
.book-cover .author { margin-top: 60px; font-size: 0.95rem; opacity: 0.8; }

.book-toc { page-break-after: always; padding: 60px; }
.book-toc h2 { font-size: 1.6rem; margin-bottom: 28px; }
.book-toc ol { list-style: none; padding: 0; counter-reset: chnum; }
.book-toc li { counter-increment: chnum; display: flex; justify-content: space-between; padding: 10px 0; border-bottom: 1px dotted var(--border); font-size: 1rem; }
.book-toc li::before { content: counter(chnum) ". "; font-weight: 700; color: var(--accent); margin-right: 8px; }

.book-chapter { padding: 50px 60px; page-break-before: always; }
.book-chapter h1 { font-size: 1.9rem; }