/* ============================================
   Checklist Page Specific Styles
   ============================================ */

:root {
  --checklist-spacing-xs: 0.75rem;
  --checklist-spacing-sm: 1.5rem;
  --checklist-spacing-md: 2.5rem;
  --checklist-spacing-lg: 4rem;
  --checklist-spacing-xl: 6rem;
  --checklist-max-width: 1400px;
  --checklist-content-width: 820px;
}

/* ============================================
   Layout Structure
   ============================================ */

.checklist-page {
  padding: clamp(2rem, 4vw, 3rem) clamp(1.5rem, 5vw, 3rem) var(--checklist-spacing-lg);
  background: linear-gradient(180deg, rgba(244, 247, 255, 0.2), #ffffff 20%);
}

.single-hero {
  max-width: var(--checklist-content-width);
  margin: 0 auto var(--checklist-spacing-lg);
  padding: clamp(2rem, 5vw, 3rem);
}

.single-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--brand-blue);
  margin-bottom: 0.75rem;
}

.single-hero h1 {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1.2;
  margin: 0 0 1rem;
  color: var(--brand-dark);
}

.single-hero .lead {
  font-size: 1.05rem;
  line-height: 1.7;
  color: rgba(15, 23, 42, 0.75);
  margin: 0 0 1.25rem;
}

.single-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--brand-muted);
  font-family: var(--font-mono);
  margin-bottom: var(--checklist-spacing-sm);
}

/* CTA Buttons in Hero */
.checklist-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.75rem;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.8rem 1.5rem;
  border-radius: 8px;
  transition: all 0.2s ease;
  text-decoration: none;
}

.cta-button.primary {
  background: var(--brand-blue);
  color: #fff;
  box-shadow: 0 2px 8px rgba(87, 131, 252, 0.25);
}

.cta-button.primary:hover {
  background: #345fe2;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(87, 131, 252, 0.35);
}

.cta-button.secondary {
  background: transparent;
  color: var(--brand-blue);
  border: 1px solid rgba(87, 131, 252, 0.4);
}

.cta-button.secondary:hover {
  background: rgba(87, 131, 252, 0.08);
  border-color: var(--brand-blue);
}

/* Container with TOC */
.checklist-container {
  max-width: var(--checklist-max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 3rem;
  align-items: start;
}

/* ============================================
   Table of Contents
   ============================================ */

.checklist-toc {
  position: relative;
  display: none;
  /* Hidden on mobile, shown on desktop */
}

.toc-sticky {
  position: sticky;
  top: 100px;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(8px);
  border-radius: 12px;
  border: 1px solid rgba(87, 131, 252, 0.1);
  max-height: calc(100vh - 140px);
  overflow-y: auto;
}

.toc-sticky h3 {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--brand-blue);
  margin: 0 0 1rem;
  font-weight: 600;
}

.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toc-link {
  display: block;
  padding: 0.5rem 0.75rem;
  font-size: 0.9rem;
  line-height: 1.4;
  color: rgba(15, 23, 42, 0.7);
  border-radius: 6px;
  transition: all 0.15s ease;
  border-left: 2px solid transparent;
}

.toc-link:hover {
  color: var(--brand-blue);
  background: rgba(87, 131, 252, 0.06);
}

.toc-link.active {
  color: var(--brand-blue);
  background: rgba(87, 131, 252, 0.08);
  border-left-color: var(--brand-blue);
  font-weight: 500;
}

/* ============================================
   Content Area
   ============================================ */

.checklist-body {
  max-width: var(--checklist-content-width);
  font-size: 1.02rem;
  line-height: 1.8;
  color: rgba(15, 23, 42, 0.9);
}

/* Typography Improvements */
.checklist-content h1 {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 2.5rem);
  line-height: 1.25;
  margin: 0 0 var(--checklist-spacing-md);
  color: var(--brand-dark);
}

.checklist-content h2 {
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 3vw, 1.9rem);
  line-height: 1.3;
  margin: var(--checklist-spacing-xl) 0 var(--checklist-spacing-md);
  color: var(--brand-dark);
  padding-top: var(--checklist-spacing-sm);
  border-top: 2px solid rgba(87, 131, 252, 0.15);
}

.checklist-content h2:first-child {
  margin-top: 0;
  border-top: none;
  padding-top: 0;
}

.checklist-content h3 {
  font-family: var(--font-mono);
  font-size: clamp(1.2rem, 2.5vw, 1.4rem);
  line-height: 1.4;
  margin: var(--checklist-spacing-lg) 0 var(--checklist-spacing-sm);
  color: var(--brand-dark);
}

.checklist-content h4 {
  font-size: 1.1rem;
  line-height: 1.5;
  margin: var(--checklist-spacing-md) 0 var(--checklist-spacing-sm);
  color: var(--brand-dark);
}

.checklist-content p {
  margin: 0 0 var(--checklist-spacing-sm);
}

.checklist-content ul,
.checklist-content ol {
  margin: var(--checklist-spacing-sm) 0;
  padding-left: 1.5rem;
}

.checklist-content li {
  margin: var(--checklist-spacing-xs) 0;
}

.checklist-content hr {
  border: none;
  border-top: 1px solid rgba(15, 23, 42, 0.08);
  margin: var(--checklist-spacing-lg) 0;
}

/* ============================================
   Tables - Lighter, More Spacious
   ============================================ */

.checklist-content table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: var(--checklist-spacing-md) 0;
  font-size: 0.95rem;
  background: #fff;
  border: 1px solid rgba(87, 131, 252, 0.15);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.04);
}

.checklist-content table thead {
  background: rgba(87, 131, 252, 0.06);
}

.checklist-content table thead th {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--brand-blue) !important;
  font-weight: 600;
  position: sticky;
  top: 80px;
  background: rgba(87, 131, 252, 0.06);
  backdrop-filter: blur(8px);
  z-index: 10;
}

.checklist-content table th,
.checklist-content table td {
  padding: 1.1rem 1.25rem;
  border-bottom: 1px solid rgba(15, 23, 42, 0.05);
  text-align: left;
  vertical-align: top;
}

.checklist-content table tbody tr {
  transition: background 0.15s ease;
}

.checklist-content table tbody tr:nth-child(even) {
  background: rgba(87, 131, 252, 0.02);
}

.checklist-content table tbody tr:hover {
  background: rgba(87, 131, 252, 0.06);
}

.checklist-content table tbody tr:last-child td {
  border-bottom: none;
}

/* Mobile table scroll */
@media (max-width: 768px) {
  .checklist-content table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
}

/* ============================================
   Intro & Legend
   ============================================ */

.cl-intro {
  background: linear-gradient(135deg, rgba(87, 131, 252, 0.08), rgba(87, 131, 252, 0.04));
  padding: var(--checklist-spacing-md);
  border-radius: 12px;
  border: 1px solid rgba(87, 131, 252, 0.2);
  margin: 0 0 var(--checklist-spacing-lg);
}

.cl-purpose {
  font-size: 1.05rem;
  line-height: 1.7;
  margin: 0 0 var(--checklist-spacing-sm);
}

.cl-status-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  margin-top: var(--checklist-spacing-sm);
}

.cl-status-legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(15, 23, 42, 0.1);
}

.cl-status-legend span::before {
  content: '';
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 2px;
}

.cl-status-legend span:nth-child(1)::before {
  background: #10b981;
}

.cl-status-legend span:nth-child(2)::before {
  background: #f59e0b;
}

.cl-status-legend span:nth-child(3)::before {
  background: #6b7280;
}

/* ============================================
   Footer CTA
   ============================================ */

.cl-footer-cta {
  background: linear-gradient(135deg, rgba(87, 131, 252, 0.08), rgba(87, 131, 252, 0.04));
  padding: var(--checklist-spacing-md);
  border-radius: 12px;
  border: 1px solid rgba(87, 131, 252, 0.2);
  margin: var(--checklist-spacing-xl) 0 var(--checklist-spacing-md);
  text-align: center;
}

.cl-footer-cta p {
  margin: 0.75rem 0;
}

.cl-footer-cta .download-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  padding: 0.9rem 1.6rem;
  background: var(--brand-blue);
  color: #fff;
  border-radius: 8px;
  margin-top: 0.5rem;
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px rgba(87, 131, 252, 0.25);
}

.cl-footer-cta .download-cta:hover {
  background: #345fe2;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(87, 131, 252, 0.35);
}

.cl-author {
  font-size: 0.9rem;
  color: rgba(15, 23, 42, 0.7);
  font-style: italic;
}

/* ============================================
   Accordions for Progressive Disclosure
   ============================================ */

.accordion {
  margin: var(--checklist-spacing-md) 0;
  border: 1px solid rgba(87, 131, 252, 0.15);
  border-radius: 12px;
  background: #fff;
  overflow: hidden;
  transition: all 0.2s ease;
}

.accordion:hover {
  border-color: rgba(87, 131, 252, 0.25);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
}

.accordion-header {
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: rgba(87, 131, 252, 0.04);
  transition: all 0.2s ease;
  list-style: none;
  user-select: none;
}

.accordion-header::-webkit-details-marker {
  display: none;
}

.accordion-header:hover {
  background: rgba(87, 131, 252, 0.08);
}

.accordion-title {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--brand-dark);
  letter-spacing: -0.01em;
}

.accordion-icon {
  flex-shrink: 0;
  color: var(--brand-blue);
  transition: transform 0.2s ease;
}

.accordion[open] .accordion-icon {
  transform: rotate(180deg);
}

.accordion-content {
  padding: 0 1.5rem 1.5rem;
  animation: accordionOpen 0.3s ease;
}

@keyframes accordionOpen {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.accordion-content > *:first-child {
  margin-top: 0.5rem;
}

.accordion-content > *:last-child {
  margin-bottom: 0;
}

/* Nested lists in accordions */
.accordion-content ul,
.accordion-content ol {
  margin: 1rem 0;
}

.accordion-content li {
  margin: 0.5rem 0;
}

/* ============================================
   Responsive Design
   ============================================ */

@media (min-width: 1024px) {
  .checklist-toc {
    display: block;
  }
}

@media (max-width: 1023px) {
  .checklist-container {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .checklist-content {
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  :root {
    --checklist-spacing-md: 2rem;
    --checklist-spacing-lg: 3rem;
    --checklist-spacing-xl: 4rem;
  }

  .checklist-page {
    padding: 2rem 1.25rem 3rem;
  }

  .checklist-hero {
    padding: 2rem;
  }

  .checklist-content {
    font-size: 1rem;
  }

  .checklist-cta-row {
    flex-direction: column;
  }

  .cta-button {
    width: 100%;
    justify-content: center;
  }

  .cl-status-legend {
    flex-direction: column;
  }
}