/* ============================================================
   K3i Paper / Bio / Training — shared editorial article stylesheet
   Used by: papers/*.html, training/*.html, bios/*.html
   Depends on variables & base type from css/styles.css
   ============================================================ */

/* ---- HERO ---- */
.paper-hero {
  position: relative;
  padding: 88px 28px 72px;
  background: var(--ink);
  color: var(--white);
  text-align: center;
  border-bottom: 1px solid var(--ink);
  overflow: hidden;
}
.paper-hero::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 56px;
  height: 1px;
  background: var(--purple);
}

/* Editorial badge on dark hero — mono, underlined */
.paper-hero .badge {
  display: inline-block;
  padding: 0 0 3px;
  border-radius: 0;
  border: none;
  border-bottom: 1px solid var(--white);
  background: transparent;
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .22em;
  text-transform: uppercase;
  margin: 28px 0 26px;
}

.paper-hero h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(28px, 4.4vw, 48px);
  color: var(--white);
  line-height: 1.12;
  letter-spacing: -0.012em;
  max-width: 820px;
  margin: 0 auto 18px;
}

.paper-hero .subtitle,
.paper-hero .paper-subtitle,
.paper-hero p.subtitle {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.72);
  max-width: 620px;
  margin: 0 auto 28px;
  font-style: italic;
}

.paper-hero .meta,
.paper-hero .paper-meta,
.paper-meta {
  display: flex;
  gap: 36px;
  justify-content: center;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
}
.paper-meta strong {
  color: var(--white);
  font-weight: 500;
}

/* ---- BODY ---- */
.paper-body {
  max-width: 820px;
  margin: 0 auto;
  padding: 56px 28px 72px;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.78;
  color: var(--ink);
}

/* Back link — two class names used across pages */
.paper-body .back-link,
.paper-back {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--ink-muted);
  text-decoration: none;
  margin-bottom: 36px;
  padding-bottom: 3px;
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}
.paper-body .back-link:hover,
.paper-back:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
  text-decoration: none;
}

/* Headings — hairline rule above, Playfair */
.paper-body h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 2.4vw, 28px);
  color: var(--ink);
  margin: 56px 0 18px;
  padding-top: 22px;
  border-top: 1px solid var(--rule);
  border-bottom: none;
  letter-spacing: -0.012em;
  line-height: 1.22;
}
.paper-body h2:first-child { border-top: none; padding-top: 0; margin-top: 0; }

.paper-body h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  color: var(--ink);
  margin: 36px 0 12px;
  letter-spacing: -0.005em;
}

.paper-body p,
.paper-body li {
  font-size: 17px;
  line-height: 1.78;
  color: var(--ink);
}
.paper-body p { margin-bottom: 22px; }

.paper-body ul,
.paper-body ol {
  padding-left: 24px;
  margin-bottom: 22px;
}
.paper-body li { margin-bottom: 10px; }

.paper-body a {
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
  transition: border-color .2s;
}
.paper-body a:hover { border-bottom-color: var(--ink); }

/* Pull-quote / blockquote — editorial cream panel */
.paper-body blockquote {
  border-left: 2px solid var(--ink);
  margin: 32px 0;
  padding: 4px 0 4px 24px;
  background: transparent;
  border-radius: 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 20px;
  line-height: 1.5;
  color: var(--ink);
}

/* ---- TABLE OF CONTENTS ---- */
.paper-toc {
  background: var(--cream);
  border: 1px solid var(--rule);
  border-top: 2px solid var(--ink);
  border-radius: 0;
  padding: 28px 32px;
  margin-bottom: 44px;
}
.paper-toc h2,
.paper-toc h3 {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: .22em;
  border: none;
  padding: 0;
}
.paper-toc ol {
  margin: 0;
  padding-left: 22px;
  list-style: decimal-leading-zero;
}
.paper-toc li {
  margin-bottom: 8px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--ink-muted);
  padding-left: 6px;
}
.paper-toc li::marker {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-faint);
}
.paper-toc a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--rule);
  transition: border-color .2s, color .2s;
  padding-bottom: 1px;
}
.paper-toc a:hover {
  color: var(--purple);
  border-bottom-color: var(--purple);
  text-decoration: none;
}

/* ---- STAT GRID / STAT CARDS ---- */
.stat-grid,
.paper-body .stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0;
  margin: 32px 0;
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}
.stat-card,
.paper-body .stat-card {
  background: var(--white);
  border: none;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  border-radius: 0;
  padding: 28px 20px;
  text-align: center;
  color: var(--ink);
}
.stat-card .stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}
.stat-card .stat-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-top: 0;
  opacity: 1;
}

/* ---- DATA TABLE ---- */
.paper-body table,
table.data-table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-family: var(--font-body);
  font-size: 15px;
}
.paper-body table th,
.paper-body table td,
table.data-table th,
table.data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--rule);
  border-left: none;
  border-right: none;
  border-top: none;
  text-align: left;
}
.paper-body table th,
table.data-table th {
  background: transparent;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink);
}
.paper-body table td,
table.data-table td {
  color: var(--ink);
}
.paper-body table tr:nth-child(even),
table.data-table tr:nth-child(even) {
  background: var(--cream);
}
.paper-body table tr:hover,
table.data-table tr:hover {
  background: var(--cream-deep);
}

/* ---- DOWNLOAD BAR / BUTTON ---- */
.paper-download-bar {
  max-width: 820px;
  margin: 0 auto 56px;
  padding: 0 28px;
  display: flex;
  justify-content: center;
  gap: 14px;
}
.paper-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 30px;
  background: var(--ink);
  color: var(--white);
  border: 1px solid var(--ink);
  border-radius: 0;
  font-family: var(--font-ui);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}
.paper-download-btn:hover {
  background: var(--purple);
  border-color: var(--purple);
  transform: none;
}
.paper-download-btn:active { transform: none; }

/* ---- PRINT ---- */
@media print {
  nav, .nav, footer, .footer,
  .paper-back, .paper-body .back-link,
  .paper-download-bar, .paper-toc,
  .k3i-ad, .cookie-banner {
    display: none !important;
  }
  body { background: #fff; margin: 0; color: #000; }
  .paper-hero {
    background: #0a0a0a !important;
    color: #fff !important;
    padding: 2.5rem 1.5rem 2rem;
    border-bottom: 1px solid #0a0a0a !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .paper-hero h1 { color: #fff !important; font-size: 1.8rem; }
  .paper-hero .subtitle,
  .paper-hero .paper-subtitle { color: rgba(255,255,255,.72) !important; }
  .paper-hero .badge {
    color: #fff !important;
    border-bottom-color: #fff !important;
    background: transparent !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .paper-meta strong { color: #fff !important; }
  .paper-body {
    padding: 1.5rem 0 2rem;
    font-size: 11pt;
    line-height: 1.7;
    color: #000 !important;
  }
  .paper-body h2 {
    font-size: 1.3rem;
    break-after: avoid;
    border-top: 1px solid #000 !important;
  }
  .paper-body h3 { font-size: 1.05rem; break-after: avoid; }
  .paper-body p, .paper-body li { color: #000 !important; }
  .paper-body blockquote {
    border-left: 2px solid #000 !important;
    color: #000 !important;
  }
  .stat-grid { break-inside: avoid; border-top-color: #000 !important; border-left-color: #000 !important; }
  .stat-card {
    background: #fff !important;
    border-right-color: #000 !important;
    border-bottom-color: #000 !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .stat-card .stat-num { color: #000 !important; }
  @page { size: A4; margin: 1.5cm 2cm; }
}