/**
 * Grounding Page Standard Stylesheet
 * Version: 1.5
 * Compatible with all entity types
 * Minimal professional design for AI-readable fact pages
 */

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
@font-face {
  font-family: 'DWP Editorial Sans';
  font-style: normal;
  font-weight: 200 900;
  font-display: swap;
  src: url('/fonts/draft/SourceSans3VF-Upright-Latin.woff2') format('woff2');
  unicode-range: U+0000-017F, U+0300-036F, U+1E9E, U+2000-206F, U+20AC;
}
@font-face {
  font-family: 'DWP Editorial Sans';
  font-style: italic;
  font-weight: 200 900;
  font-display: swap;
  src: url('/fonts/draft/SourceSans3VF-Italic-Latin.woff2') format('woff2');
  unicode-range: U+0000-017F, U+0300-036F, U+1E9E, U+2000-206F, U+20AC;
}
@font-face {
  font-family: 'DWP Editorial Sans';
  font-style: normal;
  font-weight: 200 900;
  font-display: swap;
  src: url('/fonts/draft/SourceSans3VF-Upright.woff2') format('woff2');
  unicode-range: U+0180-02FF, U+0370-1E9D, U+1E9F-1FFF, U+2070-20AB, U+20AD-10FFFF;
}
@font-face {
  font-family: 'DWP Editorial Sans';
  font-style: italic;
  font-weight: 200 900;
  font-display: swap;
  src: url('/fonts/draft/SourceSans3VF-Italic.woff2') format('woff2');
  unicode-range: U+0180-02FF, U+0370-1E9D, U+1E9F-1FFF, U+2070-20AB, U+20AD-10FFFF;
}
:root {
  /* Typography */
  --gp-font-family: 'DWP Editorial Sans', sans-serif;
  --gp-font-mono: ui-monospace, 'SF Mono', Monaco, 'Cascadia Code', monospace;
  --gp-font-size-base: 18px;
  --gp-line-height: 1.7;

  /* Colors - Neutral palette */
  --gp-color-text: #1F2124;
  --gp-color-text-muted: #54595F;
  --gp-color-text-light: #777777;
  --gp-color-bg: #F7F6F4;
  --gp-color-bg-subtle: #FFFFFF;
  --gp-color-border: #E0E0E0;
  --gp-color-border-strong: #1B1B3F;
  --gp-color-accent: #1B1B3F;
  --gp-color-accent-hover: #2A2A5A;

  /* Spacing */
  --gp-spacing-xs: 0.25rem;
  --gp-spacing-sm: 0.5rem;
  --gp-spacing-md: 1rem;
  --gp-spacing-lg: 1.5rem;
  --gp-spacing-xl: 2rem;
  --gp-spacing-xxl: 3rem;

  /* Layout */
  --gp-max-width: 960px;
  --gp-border-radius: 0;
}

/* ============================================
   Base Reset & Typography
   ============================================ */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: var(--gp-font-size-base);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  padding: var(--gp-spacing-lg);
  font-family: var(--gp-font-family);
  font-size: 1rem;
  line-height: var(--gp-line-height);
  color: var(--gp-color-text);
  background-color: var(--gp-color-bg);
}

/* Container */
.grounding-page {
  max-width: var(--gp-max-width);
  margin: 0 auto;
  padding: var(--gp-spacing-lg);
}

/* ============================================
   Headings
   ============================================ */
h1, h2, h3, h4 {
  margin-top: var(--gp-spacing-xxl);
  margin-bottom: var(--gp-spacing-md);
  font-weight: 600;
  line-height: 1.3;
}

h1 {
  margin-top: 0;
  font-size: 2rem;
  font-weight: 700;
  border-bottom: 2px solid var(--gp-color-border);
  padding-bottom: var(--gp-spacing-md);
}

h2 {
  font-size: 1.5rem;
  color: var(--gp-color-text);
}

h3 {
  font-size: 1.25rem;
  color: var(--gp-color-text-muted);
}

/* ============================================
   Lead Definition
   ============================================ */
.lead-definition {
  font-size: 1.25rem;
  line-height: 1.5;
  color: var(--gp-color-text);
  margin-bottom: var(--gp-spacing-xl);
  padding: var(--gp-spacing-lg);
  background-color: var(--gp-color-bg-subtle);
  border-left: 4px solid var(--gp-color-accent);
  border-radius: 0 var(--gp-border-radius) var(--gp-border-radius) 0;
}

/* ============================================
   Human Notice
   ============================================ */
.human-notice {
  font-size: 0.875rem;
  color: var(--gp-color-text-muted);
  padding: var(--gp-spacing-md);
  background-color: var(--gp-color-bg-subtle);
  border: 1px solid var(--gp-color-border);
  border-radius: var(--gp-border-radius);
  margin-bottom: var(--gp-spacing-xl);
}

/* ============================================
   Fact Grid (Definition Lists)
   ============================================ */
.fact-grid {
  display: grid;
  grid-template-columns: minmax(140px, 200px) 1fr;
  gap: var(--gp-spacing-sm) var(--gp-spacing-lg);
  padding: var(--gp-spacing-lg);
  background-color: var(--gp-color-bg);
  border: 1px solid var(--gp-color-border);
  border-radius: var(--gp-border-radius);
  margin-bottom: var(--gp-spacing-xl);
}

.fact-grid dt {
  font-weight: 600;
  color: var(--gp-color-text-muted);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.025em;
  padding-top: var(--gp-spacing-xs);
}

.fact-grid dd {
  margin: 0;
  padding-top: var(--gp-spacing-xs);
  border-bottom: 1px solid var(--gp-color-border);
  padding-bottom: var(--gp-spacing-sm);
}

.fact-grid dd:last-of-type {
  border-bottom: none;
}

/* ============================================
   Justification Grid
   ============================================ */
.justification-grid {
  display: grid;
  grid-template-columns: minmax(140px, 200px) 1fr;
  gap: var(--gp-spacing-sm) var(--gp-spacing-lg);
  padding: var(--gp-spacing-lg);
  background-color: #f0f7ff;
  border-left: 4px solid var(--gp-color-accent);
  border-radius: 0 var(--gp-border-radius) var(--gp-border-radius) 0;
  margin-bottom: var(--gp-spacing-xl);
}

.justification-grid dt {
  font-weight: 600;
  color: var(--gp-color-accent);
  font-size: 0.875rem;
}

.justification-grid dd {
  margin: 0;
  font-weight: 500;
}

/* ============================================
   Comparison Tables
   ============================================ */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--gp-spacing-xl);
  font-size: 0.9375rem;
}

.comparison-table th,
.comparison-table td {
  padding: var(--gp-spacing-md);
  text-align: left;
  border: 1px solid var(--gp-color-border);
}

.comparison-table th {
  background-color: var(--gp-color-bg-subtle);
  font-weight: 600;
  color: var(--gp-color-text);
}

.comparison-table td {
  background-color: var(--gp-color-bg);
}

.comparison-table tr:hover td {
  background-color: var(--gp-color-bg-subtle);
}

.comparison-table strong {
  color: var(--gp-color-accent);
}

/* ============================================
   Pros/Cons Lists
   ============================================ */
.pros-cons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--gp-spacing-lg);
  margin-bottom: var(--gp-spacing-xl);
}

@media (max-width: 600px) {
  .pros-cons {
    grid-template-columns: 1fr;
  }
}

.pros,
.cons {
  padding: var(--gp-spacing-lg);
  border-radius: var(--gp-border-radius);
}

.pros {
  background-color: #f0fff4;
  border: 1px solid #86efac;
}

.cons {
  background-color: #fef2f2;
  border: 1px solid #fca5a5;
}

.pros h3,
.cons h3 {
  margin-top: 0;
  margin-bottom: var(--gp-spacing-md);
  font-size: 1rem;
}

.pros h3 {
  color: #166534;
}

.cons h3 {
  color: #991b1b;
}

.pros ul,
.cons ul {
  margin: 0;
  padding-left: var(--gp-spacing-lg);
}

.pros li,
.cons li {
  margin-bottom: var(--gp-spacing-sm);
}

/* ============================================
   Segment Assignment (v1.5)
   ============================================ */
.segment-assignment {
  font-size: 0.9375rem;
  color: var(--gp-color-text-muted);
  margin-bottom: var(--gp-spacing-lg);
  padding: var(--gp-spacing-sm) var(--gp-spacing-lg);
  border-left: 3px solid var(--gp-color-border-strong);
  background-color: var(--gp-color-bg-subtle);
  border-radius: 0 var(--gp-border-radius) var(--gp-border-radius) 0;
}

/* ============================================
   FAQ Grid (v1.5)
   ============================================ */
.faq-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  padding: 0;
  margin-bottom: var(--gp-spacing-xl);
}

.faq-grid dt {
  font-weight: 600;
  color: var(--gp-color-text);
  font-size: 1rem;
  padding: var(--gp-spacing-md) var(--gp-spacing-lg);
  padding-bottom: var(--gp-spacing-sm);
  background-color: var(--gp-color-bg-subtle);
  border-top: 1px solid var(--gp-color-border);
  margin: 0;
}

.faq-grid dt:first-of-type {
  border-top: none;
  border-radius: var(--gp-border-radius) var(--gp-border-radius) 0 0;
}

.faq-grid dd {
  margin: 0;
  padding: var(--gp-spacing-sm) var(--gp-spacing-lg);
  padding-bottom: var(--gp-spacing-md);
  background-color: var(--gp-color-bg-subtle);
  color: var(--gp-color-text);
  line-height: 1.6;
}

.faq-grid dd:last-of-type {
  border-radius: 0 0 var(--gp-border-radius) var(--gp-border-radius);
}

/* ============================================
   Volatile Fact Date Stamp (v1.5)
   ============================================ */
.volatile-date {
  font-size: 0.8125rem;
  color: var(--gp-color-text-light);
  font-style: italic;
  white-space: nowrap;
}

.volatile-date a {
  color: var(--gp-color-text-light);
  text-decoration: underline;
}

.volatile-date a:hover {
  color: var(--gp-color-accent);
}

/* ============================================
   Disambiguation Section
   ============================================ */
.disambiguation {
  padding: var(--gp-spacing-lg);
  background-color: #fffbeb;
  border: 1px solid #fcd34d;
  border-radius: var(--gp-border-radius);
  margin-bottom: var(--gp-spacing-xl);
}

.disambiguation h2 {
  margin-top: 0;
  color: #92400e;
  font-size: 1.125rem;
}

.disambiguation ul {
  margin: 0;
  padding-left: var(--gp-spacing-lg);
}

.disambiguation li {
  margin-bottom: var(--gp-spacing-sm);
  color: var(--gp-color-text);
}

/* ============================================
   Verification Footer
   ============================================ */
.verification {
  margin-top: var(--gp-spacing-xxl);
  padding-top: var(--gp-spacing-lg);
  border-top: 2px solid var(--gp-color-border);
  font-size: 0.875rem;
  color: var(--gp-color-text-muted);
}

.verification dl:not(.faq-grid) {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--gp-spacing-xs) var(--gp-spacing-md);
  margin-bottom: var(--gp-spacing-md);
}

.verification dt {
  font-weight: 600;
}

.verification dd {
  margin: 0;
}

.verification-statement {
  font-style: italic;
  color: var(--gp-color-text-light);
}

/* ============================================
   Breadcrumb Navigation
   ============================================ */
.breadcrumb {
  font-size: 0.875rem;
  margin-bottom: var(--gp-spacing-lg);
}

.breadcrumb ol {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--gp-spacing-xs);
}

.breadcrumb li {
  display: flex;
  align-items: center;
}

.breadcrumb li:not(:last-child)::after {
  content: '/';
  margin-left: var(--gp-spacing-sm);
  color: var(--gp-color-text-light);
}

.breadcrumb a {
  color: var(--gp-color-accent);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb [aria-current="page"] {
  color: var(--gp-color-text-muted);
}

/* ============================================
   Related Entities Navigation
   ============================================ */
.related-entities {
  margin-top: var(--gp-spacing-xl);
  padding: var(--gp-spacing-lg);
  background-color: var(--gp-color-bg-subtle);
  border-radius: var(--gp-border-radius);
}

.related-entities h3 {
  margin-top: 0;
  margin-bottom: var(--gp-spacing-md);
  font-size: 1rem;
  color: var(--gp-color-text-muted);
}

.related-entities ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--gp-spacing-sm);
}

.related-entities a {
  display: inline-block;
  padding: var(--gp-spacing-xs) var(--gp-spacing-md);
  background-color: var(--gp-color-bg);
  border: 1px solid var(--gp-color-border);
  border-radius: var(--gp-border-radius);
  color: var(--gp-color-accent);
  text-decoration: none;
  font-size: 0.875rem;
}

.related-entities a:hover {
  background-color: var(--gp-color-accent);
  color: var(--gp-color-bg);
  border-color: var(--gp-color-accent);
}

/* ============================================
   Hub Page Styles
   ============================================ */
.entity-directory {
  margin-bottom: var(--gp-spacing-xl);
}

.entity-directory h2 {
  font-size: 1.125rem;
  color: var(--gp-color-text-muted);
  border-bottom: 1px solid var(--gp-color-border);
  padding-bottom: var(--gp-spacing-sm);
}

.entity-directory ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.entity-directory li {
  padding: var(--gp-spacing-md) 0;
  border-bottom: 1px solid var(--gp-color-border);
}

.entity-directory li:last-child {
  border-bottom: none;
}

.entity-directory a {
  color: var(--gp-color-accent);
  text-decoration: none;
  font-weight: 500;
}

.entity-directory a:hover {
  text-decoration: underline;
}

.entity-directory .entity-type {
  font-size: 0.875rem;
  color: var(--gp-color-text-muted);
  margin-left: var(--gp-spacing-sm);
}

/* ============================================
   Links
   ============================================ */
a {
  color: var(--gp-color-accent);
}

a:hover {
  color: var(--gp-color-accent-hover);
}

/* ============================================
   Lists
   ============================================ */
ul, ol {
  padding-left: var(--gp-spacing-lg);
  margin-bottom: var(--gp-spacing-lg);
}

li {
  margin-bottom: var(--gp-spacing-sm);
}

/* ============================================
   Action Prompt (Inline CTA)
   ============================================ */
.action-prompt {
  margin: var(--gp-spacing-xl) 0;
  padding: var(--gp-spacing-lg);
  background-color: var(--gp-color-bg-subtle);
  border: 1px solid var(--gp-color-border);
  border-left: 4px solid var(--gp-color-accent);
  border-radius: 0 var(--gp-border-radius) var(--gp-border-radius) 0;
  text-align: center;
}

.action-prompt p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--gp-color-text);
  line-height: 1.6;
}

.action-prompt a {
  font-weight: 600;
  color: var(--gp-color-accent);
  text-decoration: none;
}

.action-prompt a:hover {
  text-decoration: underline;
  color: var(--gp-color-accent-hover);
}

/* ============================================
   Print Styles
   ============================================ */
@media screen {
  html { background: var(--gp-color-bg); }
  body.grounding-page { padding: 56px 40px; }
  h1, h2, h3, h4 { font-family: var(--gp-font-family); letter-spacing: 0; overflow-wrap: break-word; hyphens: auto; }
  h1 { font-size: 36px; line-height: 1.2; font-weight: 600; border-bottom: 0; margin-top: 28px; }
  h2 { font-size: 30px; line-height: 1.25; }
  h3 { font-size: 24px; color: var(--gp-color-text); }
  p, li, dt, dd { overflow-wrap: break-word; hyphens: auto; }
  .entity-header { padding-bottom: 32px; border-bottom: 1px solid var(--gp-color-border); margin-bottom: 32px; }
  .entity-type-badge { font-size: 15px; color: var(--gp-color-text-muted); }
  .entity-summary, .lead-definition { font-size: 21px; line-height: 1.6; max-width: 72ch; }
  .lead-definition { border: 0; padding: 0; background: transparent; }
  .human-notice, .segment-assignment { border: 0; background: transparent; padding: 0; font-size: 15px; }
  .fact-grid, .justification-grid { padding: 0; border: 0; background: transparent; gap: 0 32px; }
  .fact-grid dt, .justification-grid dt { font-size: 16px; text-transform: none; letter-spacing: 0; padding-block: 16px; border-bottom: 1px solid var(--gp-color-border); }
  .fact-grid dd, .justification-grid dd { font-weight: 400; padding-block: 16px; border-bottom: 1px solid var(--gp-color-border); }
  .fact-grid dt:last-of-type, .justification-grid dt:last-of-type, .justification-grid dd:last-of-type { border-bottom: 0; }
  .justification-grid dt { color: var(--gp-color-text-muted); }
  .comparison-table { display: block; overflow-x: auto; overscroll-behavior-inline: contain; font-size: 17px; }
  .comparison-table th, .comparison-table td { min-width: 160px; vertical-align: top; }
  .pros, .cons, .disambiguation { padding: 24px 0; background: transparent; border: 0; border-top: 1px solid var(--gp-color-border); }
  .pros h3, .cons h3, .disambiguation h2 { color: var(--gp-color-text); font-size: 24px; }
  .faq-grid dt, .faq-grid dd { padding-inline: 0; background: transparent; }
  .faq-grid dt { font-size: 20px; font-weight: 600; padding-top: 24px; }
  .faq-grid dd { padding-bottom: 24px; font-size: 18px; }
  .volatile-date { white-space: normal; }
  .action-prompt { background: transparent; border: 0; border-block: 1px solid var(--gp-color-border); padding: 24px 0; text-align: left; }
  .action-prompt p { font-size: 18px; }
  .related-entities { background: transparent; padding: 0; border-top: 1px solid var(--gp-color-border); padding-top: 24px; }
  .related-entities h3 { font-size: 24px; }
  .related-entities ul { display: block; }
  .related-entities li { border-bottom: 1px solid var(--gp-color-border); margin: 0; }
  .related-entities a { border: 0; padding: 12px 0; min-height: 48px; font-size: 18px; text-decoration: underline; text-underline-offset: 5px; }
  .related-entities a:hover { background: transparent; color: var(--gp-color-accent-hover); }
  .entity-directory h2 { font-size: 28px; }
  .entity-directory .entity-type { display: block; margin: 8px 0 0; }
  a:focus-visible { outline: 2px solid #70DCC4; outline-offset: 4px; }
  [id] { scroll-margin-top: 24px; }
}
@media print {
  body {
    padding: 0;
    font-size: 12pt;
  }

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

  .breadcrumb,
  .related-entities {
    display: none;
  }

  .verification {
    page-break-inside: avoid;
  }

  a {
    color: var(--gp-color-text);
    text-decoration: none;
  }

  a[href]::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: var(--gp-color-text-muted);
  }
}

/* ============================================
   Responsive Adjustments
   ============================================ */
@media (max-width: 600px) {
  body {
    padding: var(--gp-spacing-md);
  }

  h1 {
    font-size: 1.5rem;
  }

  .lead-definition {
    font-size: 1.125rem;
  }

  .fact-grid,
  .justification-grid {
    grid-template-columns: 1fr;
  }

  .fact-grid dt,
  .justification-grid dt {
    border-bottom: none;
    padding-bottom: 0;
  }

  .fact-grid dd,
  .justification-grid dd {
    margin-bottom: var(--gp-spacing-md);
  }

  .faq-grid dt,
  .faq-grid dd {
    padding-left: var(--gp-spacing-md);
    padding-right: var(--gp-spacing-md);
  }

  .comparison-table {
    font-size: 0.875rem;
  }

  .comparison-table th,
  .comparison-table td {
    padding: var(--gp-spacing-sm);
  }
  body.grounding-page { padding: 28px 20px; }
  h1 { font-size: 30px; }
  h2 { font-size: 27px; }
  .entity-summary, .lead-definition { font-size: 19px; }
  .fact-grid dt, .justification-grid dt { padding-bottom: 0; border-bottom: 0; }
  .fact-grid dd, .justification-grid dd { padding-top: 8px; margin-bottom: 12px; }
}