/* ==========================================================================
   CASE STUDY & REPORT — SHARED STYLES
   Used by all pages under /decision-architecture/ and /founder/syncopro/
   Prefixes: cs- (case study parent pages), doc- (sub-report pages), footer--structured
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }

body { padding-top: 80px; }

/* ==========================================================================
   BREADCRUMB
   ========================================================================== */
.cs-breadcrumb {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  padding: 24px 0 0;
  list-style: none;
}
.cs-breadcrumb li {
  display: flex;
  align-items: center;
  gap: 6px;
}
.cs-breadcrumb a {
  font-size: 0.8125rem;
  font-weight: 500;
  color: #6b7280;
  text-decoration: none;
  transition: color 150ms ease-out;
  white-space: nowrap;
}
.cs-breadcrumb a:hover { color: #2563eb; }
.cs-breadcrumb a svg { width: 13px; height: 13px; flex-shrink: 0; vertical-align: -2px; }
.cs-breadcrumb-sep { font-size: 0.75rem; color: #d1d5db; flex-shrink: 0; }
.cs-breadcrumb-current { font-size: 0.8125rem; font-weight: 600; color: #111827; white-space: nowrap; }

/* ==========================================================================
   BACK LINK
   ========================================================================== */
.cs-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  color: #6b7280;
  text-decoration: none;
  padding: 24px 0 0;
  transition: color 150ms ease-out;
}
.cs-back:hover { color: #2563eb; }
.cs-back svg { width: 14px; height: 14px; flex-shrink: 0; }

/* ==========================================================================
   PAGE HEADER — cs- prefix (case study parent pages)
   ========================================================================== */
.cs-header {
  padding: 48px 0 56px;
  border-bottom: 1px solid #e5e7eb;
}
.cs-eyebrow {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.cs-pill {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 10px;
  border-radius: 6px;
  background-color: rgba(37, 99, 235, 0.1);
  color: #2563eb;
}
.cs-pill--grey { background-color: #f3f4f6; color: #6b7280; }
.cs-h1 {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  color: #111827;
  margin-bottom: 16px;
}
.cs-h1 span { color: #2563eb; }
.cs-lead {
  font-size: 1.125rem;
  color: #6b7280;
  line-height: 1.75;
  margin-bottom: 40px;
}
.cs-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 24px;
  padding-top: 28px;
  border-top: 1px solid #f3f4f6;
}
.cs-meta-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #9ca3af;
  display: block;
  margin-bottom: 4px;
}
.cs-meta-value {
  font-size: 0.875rem;
  font-weight: 500;
  color: #111827;
  line-height: 1.4;
}

/* ==========================================================================
   PAGE HEADER — doc- prefix (sub-report pages)
   ========================================================================== */
.doc-header {
  padding: 48px 0 56px;
  border-bottom: 1px solid #e5e7eb;
}
.doc-eyebrow {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.doc-pill {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 10px;
  border-radius: 6px;
  background: rgba(37, 99, 235, 0.1);
  color: #2563eb;
}
.doc-pill--grey { background: #f3f4f6; color: #6b7280; }
.doc-h1 {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 700;
  color: #111827;
  line-height: 1.2;
  margin-bottom: 16px;
}
.doc-lead {
  font-size: 1.125rem;
  color: #6b7280;
  line-height: 1.75;
  margin-bottom: 40px;
}
.doc-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 24px;
  padding-top: 28px;
  border-top: 1px solid #f3f4f6;
}
.doc-meta-item { display: flex; flex-direction: column; gap: 2px; }
.doc-meta-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #9ca3af;
  display: block;
  margin-bottom: 4px;
}
.doc-meta-value {
  font-size: 0.875rem;
  font-weight: 500;
  color: #111827;
  line-height: 1.4;
}

/* ==========================================================================
   TL;DR BLOCK
   ========================================================================== */
.cs-tldr {
  background-color: rgba(37, 99, 235, 0.04);
  border-left: 3px solid #2563eb;
  border-radius: 0 8px 8px 0;
  padding: 24px 32px;
  margin: 48px 0;
}
.cs-tldr-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #2563eb;
  margin-bottom: 12px;
}
.cs-tldr ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.cs-tldr li {
  font-size: 1rem;
  color: #111827;
  padding-left: 20px;
  position: relative;
  line-height: 1.65;
}
.cs-tldr li::before { content: '→'; position: absolute; left: 0; color: #2563eb; font-weight: 600; }

/* ==========================================================================
   SECTIONS
   ========================================================================== */
.cs-section {
  padding: 64px 0;
  border-bottom: 1px solid #f3f4f6;
}
.cs-section:last-of-type { border-bottom: none; }
.cs-section-index {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #9ca3af;
  display: block;
  margin-bottom: 8px;
}
.cs-h2 {
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  font-weight: 700;
  line-height: 1.25;
  color: #111827;
  margin-bottom: 24px;
}
.cs-h3 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #6b7280;
  margin: 36px 0 12px;
}
.cs-p {
  font-size: 1rem;
  color: #6b7280;
  line-height: 1.75;
  margin-bottom: 16px;
}
.cs-p strong { color: #111827; font-weight: 600; }

.doc-section {
  padding: 64px 0;
  border-bottom: 1px solid #f3f4f6;
}
.doc-section:last-of-type { border-bottom: none; }
.doc-section-index {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #9ca3af;
  display: block;
  margin-bottom: 8px;
}
.doc-h2 {
  font-size: clamp(1.5rem, 3vw, 1.875rem);
  font-weight: 700;
  color: #111827;
  margin-bottom: 24px;
  line-height: 1.25;
}
.doc-h3 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #6b7280;
  margin: 36px 0 12px;
}
.doc-p {
  font-size: 1rem;
  color: #6b7280;
  line-height: 1.75;
  margin-bottom: 16px;
}
.doc-p strong { color: #111827; font-weight: 600; }

.doc-list { list-style: none; padding: 0; margin: 12px 0 20px; }
.doc-list li {
  font-size: 0.9375rem;
  color: #4b5563;
  padding-left: 16px;
  position: relative;
  margin-bottom: 8px;
  line-height: 1.65;
}
.doc-list li::before { content: '→'; position: absolute; left: 0; color: #2563eb; font-weight: 600; }
.doc-list li strong { color: #111827; font-weight: 600; }

/* ==========================================================================
   PULL QUOTE
   ========================================================================== */
.cs-pullquote {
  border-left: 3px solid #111827;
  padding: 4px 0 4px 24px;
  margin: 36px 0;
}
.cs-pullquote p {
  font-size: 1.125rem;
  font-weight: 600;
  font-style: italic;
  color: #111827;
  line-height: 1.5;
}

/* ==========================================================================
   CALLOUT — shared across cs- and doc- pages
   ========================================================================== */
.cs-callout {
  background: #f3f4f6;
  border-left: 3px solid #2563eb;
  border-radius: 0 8px 8px 0;
  padding: 16px 20px;
  margin: 20px 0;
}
.cs-callout p { font-size: 0.875rem; color: #6b7280; line-height: 1.65; margin: 0; }
.cs-callout p strong { color: #111827; font-weight: 600; }

.callout {
  border-left: 3px solid #2563eb;
  background: rgba(37, 99, 235, 0.04);
  border-radius: 0 8px 8px 0;
  padding: 16px 20px;
  margin: 20px 0;
}
.callout p { font-size: 0.875rem; color: #4b5563; line-height: 1.65; margin: 0; }
.callout p strong { color: #111827; font-weight: 600; }
.callout--warning { border-left-color: #f59e0b; background: rgba(245, 158, 11, 0.04); }
.callout--danger  { border-left-color: #ef4444; background: rgba(239, 68, 68, 0.04); }
.callout--success { border-left-color: #10b981; background: rgba(16, 185, 129, 0.04); }

/* ==========================================================================
   VISUAL FRAME
   ========================================================================== */
.cs-visual {
  background: #fff;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  overflow: hidden;
  margin: 28px 0;
  box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1);
}
.cs-visual-canvas {
  background: #f9fafb;
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 200px;
}
.cs-visual-caption {
  padding: 12px 24px;
  border-top: 1px solid #e5e7eb;
  background: #fff;
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.cs-fig-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #9ca3af;
  white-space: nowrap;
  flex-shrink: 0;
}
.cs-fig-text {
  font-size: 0.8125rem;
  color: #6b7280;
  line-height: 1.5;
  font-style: italic;
}

/* ==========================================================================
   DIAGNOSIS GRID
   ========================================================================== */
.cs-diag-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  overflow: hidden;
  margin: 24px 0;
}
.cs-diag-cell { background: #fff; padding: 28px 24px; }
.cs-diag-layer {
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #9ca3af;
  margin-bottom: 6px;
}
.cs-diag-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #111827;
  margin-bottom: 10px;
  line-height: 1.3;
}
.cs-diag-desc { font-size: 0.8125rem; color: #6b7280; line-height: 1.6; }
.cs-diag-cell--visibility { border-top: 3px solid #dc2626; }
.cs-diag-cell--capacity   { border-top: 3px solid #ea580c; }
.cs-diag-cell--process    { border-top: 3px solid #f59e0b; }

/* ==========================================================================
   ARCHITECTURE LAYER DIAGRAM
   ========================================================================== */
.cs-arch { display: flex; flex-direction: column; gap: 3px; width: 100%; }
.cs-arch-layer {
  border-radius: 8px;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.cs-arch-layer--intent    { background: rgba(37,99,235,.08); border: 1.5px solid rgba(37,99,235,.3); }
.cs-arch-layer--boundary  { background: #f9fafb; border: 1.5px dashed #d1d5db; border-radius: 0; padding: 10px 24px; justify-content: center; }
.cs-arch-layer--execution { background: rgba(16,185,129,.06); border: 1.5px solid rgba(16,185,129,.3); }
.cs-arch-layer--guardrail { background: rgba(245,158,11,.06); border: 1.5px solid rgba(245,158,11,.3); }
.cs-arch-badge {
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
  flex-shrink: 0;
}
.cs-arch-layer--intent   .cs-arch-badge { background: rgba(37,99,235,.15);  color: #1d4ed8; }
.cs-arch-layer--execution .cs-arch-badge { background: rgba(16,185,129,.15); color: #059669; }
.cs-arch-layer--guardrail .cs-arch-badge { background: rgba(245,158,11,.15); color: #92400e; }
.cs-arch-title { font-size: 0.9375rem; font-weight: 700; color: #111827; margin-bottom: 4px; }
.cs-arch-desc  { font-size: 0.8125rem; color: #6b7280; line-height: 1.5; }
.cs-arch-boundary-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #9ca3af;
}
.cs-arch-items {
  font-size: 0.75rem;
  color: #6b7280;
  margin-top: 6px;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
}
.cs-arch-item { display: flex; align-items: center; gap: 4px; }
.cs-arch-item::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: currentColor;
  flex-shrink: 0;
  opacity: 0.5;
}

/* ==========================================================================
   TABLE
   ========================================================================== */
.cs-table-scroll { overflow-x: auto; }
.cs-table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
.cs-table thead th {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #9ca3af;
  padding: 10px 16px;
  text-align: left;
  border-bottom: 2px solid #e5e7eb;
  background: #f9fafb;
  white-space: nowrap;
}
.cs-table tbody td {
  padding: 13px 16px;
  border-bottom: 1px solid #f3f4f6;
  color: #6b7280;
  vertical-align: top;
  line-height: 1.5;
}
.cs-table tbody tr:last-child td { border-bottom: none; }
.cs-table tbody td:first-child { font-weight: 600; color: #111827; white-space: nowrap; }
.cs-table tbody tr:hover { background: #f9fafb; }

/* ==========================================================================
   BADGE
   ========================================================================== */
.cs-badge {
  display: inline-block;
  font-size: 0.625rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 2px 8px;
  border-radius: 4px;
  white-space: nowrap;
}
.cs-badge--intent    { background: rgba(37,99,235,.1);  color: #1d4ed8; }
.cs-badge--execution { background: rgba(16,185,129,.1); color: #059669; }
.cs-badge--shared    { background: #f3f4f6; color: #6b7280; }
.cs-badge--guardrail { background: rgba(245,158,11,.1); color: #92400e; }
.cs-badge--purple    { background: rgba(124,58,237,.1); color: #6d28d9; }
.cs-badge--red       { background: rgba(220,38,38,.1);  color: #b91c1c; }

/* ==========================================================================
   IMPACT STRIP
   ========================================================================== */
.cs-outcomes {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  overflow: hidden;
  margin: 28px 0;
  box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.08);
}
.cs-outcome-cell { background: #fff; padding: 24px 20px; }
.cs-outcome-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #9ca3af;
  margin-bottom: 8px;
}
.cs-outcome-stat {
  font-size: 1.375rem;
  font-weight: 700;
  color: #2563eb;
  line-height: 1.1;
  margin-bottom: 8px;
}
.cs-outcome-desc { font-size: 0.8125rem; color: #6b7280; line-height: 1.55; }

/* ==========================================================================
   STEP LIST
   ========================================================================== */
.cs-steps { list-style: none; display: flex; flex-direction: column; gap: 24px; margin: 24px 0; }
.cs-step  { display: flex; gap: 20px; align-items: flex-start; }
.cs-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  min-width: 36px;
  background: #2563eb;
  color: #fff;
  font-size: 0.875rem;
  font-weight: 700;
  border-radius: 50%;
  flex-shrink: 0;
}
.cs-step-title { font-size: 1rem; font-weight: 600; color: #111827; margin-bottom: 4px; }
.cs-step-desc  { font-size: 0.875rem; color: #6b7280; line-height: 1.65; }

/* ==========================================================================
   FEEDBACK LOOP DIAGRAM
   ========================================================================== */
.cs-loop {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  row-gap: 16px;
  width: 100%;
}
.cs-loop-node {
  background: #fff;
  border: 1.5px solid #e5e7eb;
  border-radius: 8px;
  padding: 12px 18px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: #111827;
  text-align: center;
  min-width: 120px;
}
.cs-loop-node--blue  { border-color: #2563eb; background: rgba(37,99,235,.06);  color: #1d4ed8; }
.cs-loop-node--green { border-color: #10b981; background: rgba(16,185,129,.06); color: #059669; }
.cs-loop-node--amber { border-color: #f59e0b; background: rgba(245,158,11,.06); color: #92400e; }
.cs-loop-sublabel {
  font-size: 0.625rem;
  font-weight: 500;
  color: #9ca3af;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 3px;
}
.cs-loop-arrow { font-size: 1.125rem; color: #d1d5db; padding: 0 6px; flex-shrink: 0; }

/* ==========================================================================
   EVIDENCE ACCESS BAR
   ========================================================================== */
.cs-access-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  margin: 20px 0 48px;
  padding-top: 20px;
  border-top: 1px solid #f3f4f6;
}
.cs-access-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #9ca3af;
  margin-right: 4px;
  white-space: nowrap;
}
.cs-access-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: #374151;
  text-decoration: none;
  padding: 6px 14px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  background: #fff;
  transition: border-color 150ms ease-out, color 150ms ease-out;
  white-space: nowrap;
}
.cs-access-btn:hover { border-color: #2563eb; color: #2563eb; }
.cs-access-btn svg  { width: 12px; height: 12px; flex-shrink: 0; opacity: 0.6; }

/* ==========================================================================
   STRUCTURED FOOTER
   ========================================================================== */
.footer--structured {
  padding: var(--space-5xl) 0 var(--space-3xl);
  border-top: 1px solid var(--color-border-light);
  background-color: var(--color-background);
}
.footer__nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4xl);
  padding-bottom: var(--space-4xl);
  border-bottom: 1px solid var(--color-border-light);
  margin-bottom: var(--space-3xl);
}
.footer__col-label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--color-text);
  margin-bottom: var(--space-lg);
  display: block;
}
.footer__col-links { list-style: none; display: flex; flex-direction: column; gap: var(--space-sm); }
.footer__col-link {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  line-height: var(--line-height-normal);
  transition: color var(--transition-fast);
}
.footer__col-link:hover { color: var(--color-text); }
.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}
.footer__bottom-copy { font-size: var(--font-size-sm); color: var(--color-text-tertiary); }
.footer__bottom-links { display: flex; gap: var(--space-lg); }
.footer__bottom-link {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.footer__bottom-link:hover { color: var(--color-text-secondary); }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 768px) {
  .cs-h1  { font-size: 1.75rem; }
  .doc-h1 { font-size: 1.75rem; }
  .cs-diag-grid  { grid-template-columns: 1fr; }
  .cs-outcomes   { grid-template-columns: repeat(2, 1fr); }
  .footer__nav   { grid-template-columns: repeat(2, 1fr); gap: var(--space-3xl); }
}
@media (max-width: 480px) {
  .cs-tldr    { padding: 20px; }
  .cs-section { padding: 48px 0; }
  .cs-h2      { font-size: 1.5rem; }
  .doc-section { padding: 48px 0; }
  .doc-h2     { font-size: 1.5rem; }
  .cs-outcomes { grid-template-columns: 1fr; }
  .footer__nav { grid-template-columns: 1fr; gap: var(--space-xl); }
  .footer__bottom { flex-direction: column; align-items: flex-start; }
}

/* ==========================================================================
   CASE STUDY PAGE ENTRANCE ANIMATIONS
   Subtle fade+slide for the page header area on load.
   Scroll-reveal for cards/cells is handled by staff-portfolio.js.
   ========================================================================== */
@media (prefers-reduced-motion: no-preference) {
  .cs-back {
    animation: cs-fadeSlideUp 0.4s ease-out both;
    animation-delay: 0.05s;
  }
  .cs-header {
    animation: cs-fadeSlideUp 0.5s ease-out both;
    animation-delay: 0.1s;
  }
  .cs-tldr {
    animation: cs-fadeSlideUp 0.5s ease-out both;
    animation-delay: 0.22s;
  }
}

@keyframes cs-fadeSlideUp {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}