@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,500;0,600;1,400;1,600&family=Outfit:wght@200;300;400;500&family=Syne:wght@400;500;600;700;800&display=swap');

:root {
  /* Color Palette */
  --primary: #1e7a74;
  --primary-rgb: 30, 122, 116;
  --primary-dark: #0d4f4a;
  --primary-dark-rgb: 13, 79, 74;
  --primary-light: #e0f2f1;
  --primary-light-rgb: 224, 242, 241;
  --surface-dim: #090f12;
  --surface-dim-rgb: 9, 15, 18;
  --surface: #0e191d;
  --surface-rgb: 14, 25, 29;
  --surface-container-low: #152027;
  --surface-container-low-rgb: 21, 32, 39;
  --surface-container: #1b2a32;
  --surface-container-rgb: 27, 42, 50;
  --surface-container-high: #223540;
  --surface-container-high-rgb: 34, 53, 64;
  --on-surface: #d6eae8;
  --on-surface-rgb: 214, 234, 232;
  --on-surface-variant: #7fa8a4;
  --on-surface-variant-rgb: 127, 168, 164;
  --outline-variant: #2a4048;
  --outline-variant-rgb: 42, 64, 72;
  --accent-amber: #d97706;
  --accent-amber-rgb: 217, 119, 6;
  --accent-light: #f0fafa;
  --accent-light-rgb: 240, 250, 250;
  
  /* Typography */
  --font-display: 'Syne', sans-serif;
  --font-body: 'Lora', serif;
  --font-meta: 'Outfit', sans-serif;
}

html {
  scroll-behavior: smooth;
  background-color: var(--surface-dim);
  color: var(--on-surface);
  font-family: var(--font-body);
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Typography Base */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--accent-light);
  line-height: 1.1;
  margin-top: 0;
}

p {
  line-height: 1.7;
  font-size: 1.125rem;
  margin-bottom: 1.5rem;
  color: var(--on-surface);
}

a {
  color: var(--primary-light);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  transition: color 0.2s;
}

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

/* Layout Utilities */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

.article-container {
  width: 90%;
  max-width: 720px;
  margin: 0 auto;
}

/* Header & Nav */
.site-nav {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 50;
  background: rgba(9, 15, 18, 0.85);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--outline-variant);
  padding: 1rem 0;
}

.site-nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  font-family: var(--font-meta);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 500;
  color: var(--accent-light);
  text-decoration: none;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-brand span {
  color: var(--primary);
}

/* Editorial Components */

.editorial-deck {
  font-family: var(--font-body);
  font-size: 1.35rem;
  line-height: 1.6;
  color: var(--on-surface-variant);
  margin-bottom: 2rem;
  font-style: italic;
}

.eyebrow {
  font-family: var(--font-meta);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  font-size: 0.8rem;
  color: var(--primary);
  margin-bottom: 0.5rem;
  font-weight: 500;
}

/* Callouts & Interactive */

.stats-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  padding: 3rem 0;
  border-top: 1px solid var(--outline-variant);
  border-bottom: 1px solid var(--outline-variant);
  margin: 4rem 0;
}

.stat-item {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.stat-number {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.5vw + 0.75rem, 3rem);
  font-weight: 800;
  color: var(--accent-light);
  line-height: 1.1;
  margin-bottom: 0.5rem;
  min-width: 0;
  overflow-wrap: break-word;
}

.stat-number.accent {
  color: var(--primary);
}

/* Sidebar / callout numeric sizes (aliases from legacy util migration) */
.stat-number.text-220 {
  font-size: clamp(1.5rem, 2vw + 1rem, 2.2rem);
  line-height: 1.12;
}

.stat-number.text-250 {
  font-size: clamp(1.6rem, 2.3vw + 1rem, 2.5rem);
  line-height: 1.1;
}

/* Prose headline stats (e.g. “Increasing”) — smaller, amber, readable in narrow sidebars */
.stat-number.text-220-amber {
  color: var(--accent-amber);
  font-size: clamp(1.2rem, 1.1vw + 0.95rem, 1.65rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.04em;
}

.data-callout {
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  border-radius: 8px;
  padding: 1.5rem;
  position: relative;
  overflow: visible;
}

.data-callout .stat-label {
  color: var(--on-surface);
  margin-top: 0.65rem;
  line-height: 1.55;
  position: relative;
  z-index: 1;
}

.data-callout .stat-number {
  position: relative;
  z-index: 0;
  margin-bottom: 0.35rem;
  line-height: 1.35;
}

.stat-label {
  font-family: var(--font-meta);
  font-size: 0.9rem;
  color: var(--on-surface-variant);
  font-weight: 400;
  line-height: 1.4;
  min-width: 0;
  overflow-wrap: break-word;
}

.pull-quote {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 1.5rem;
  line-height: 1.4;
  color: var(--accent-light);
  margin: 2.5rem -2rem;
  padding: 1.5rem 2rem;
  border-left: 4px solid var(--accent-amber);
  background: linear-gradient(90deg, rgba(217, 119, 6, 0.05) 0%, transparent 100%);
}

.pull-quote cite {
  display: block;
  font-family: var(--font-meta);
  font-style: normal;
  font-size: 0.9rem;
  color: var(--on-surface-variant);
  margin-top: 1rem;
}

.fact-box {
  background: var(--surface-container-low);
  border: 1px solid var(--outline-variant);
  padding: 2rem;
  border-radius: 4px;
  margin: 2rem 0;
}

.fact-box h4 {
  font-family: var(--font-meta);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.9rem;
  color: var(--primary);
  margin-bottom: 1rem;
}

.fact-box ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.fact-box li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 1rem;
  font-size: 1rem;
}

.fact-box li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--accent-amber);
  font-weight: bold;
}

.rule-divider {
  border: 0;
  height: 1px;
  background: var(--outline-variant);
  margin: 4rem 0;
  width: 100%;
}

/* Chapter Cards Grid */
.chapter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
  margin-bottom: 4rem;
}

.chapter-card {
  background: var(--surface);
  border: 1px solid var(--outline-variant);
  border-radius: 8px;
  padding: 2rem;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  position: relative;
  overflow: hidden;
}

.chapter-card:hover {
  background: var(--surface-container);
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.5);
}

.chapter-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--primary);
  opacity: 0;
  transition: opacity 0.3s;
}

.chapter-card:hover::before {
  opacity: 1;
}

.chapter-card .eyebrow {
  margin-bottom: 1rem;
}

.chapter-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--accent-light);
}

.chapter-card p {
  font-size: 1rem;
  color: var(--on-surface-variant);
  margin-bottom: 2rem;
  flex-grow: 1;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  border-top: 1px solid var(--outline-variant);
  padding-top: 1.5rem;
}

.card-teaser {
  font-family: var(--font-meta);
  font-size: 0.85rem;
  color: var(--primary-light);
  font-weight: 500;
  font-style: italic;
  max-width: 65%;
}

.read-link {
  font-family: var(--font-meta);
  font-weight: 600;
  color: var(--accent-amber);
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* Homepage Hero */
.hub-hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  padding-top: 80px; /* Offset for nav */
  background-color: var(--surface-dim);
  overflow: hidden;
}

.hero-image-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-image-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
  -webkit-mask-image: linear-gradient(to bottom, black 50%, transparent 100%);
  mask-image: linear-gradient(to bottom, black 50%, transparent 100%);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, var(--surface-dim) 0%, rgba(9, 15, 18, 0.4) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 800px;
}

.hero-content h1 {
  font-size: clamp(3rem, 6vw, 5.5rem);
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  color: white;
}

/* Tooltip indicators are managed by TooltipSystem in Assets/tooltip.js */
span[data-tooltip] {
  cursor: help;
  position: relative;
}

/* Generic Utilities */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* Footer */
.site-footer {
  padding: 4rem 0;
  border-top: 1px solid var(--outline-variant);
  background: var(--surface-container-low);
  margin-top: auto;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
}

.footer-col h4 {
  font-family: var(--font-meta);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--on-surface-variant);
  margin-bottom: 1.5rem;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  font-family: var(--font-meta);
  font-size: 0.95rem;
}

.footer-col ul li {
  margin-bottom: 0.75rem;
}

.footer-col ul li a {
  color: var(--on-surface);
  text-decoration: none;
}

.footer-col ul li a:hover {
  color: var(--primary-light);
  text-decoration: underline;
}

.attribution {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-family: var(--font-meta);
  font-size: 0.85rem;
  color: var(--on-surface-variant);
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--outline-variant);
}

@media (max-width: 768px) {
  .stats-strip {
    grid-template-columns: 1fr 1fr;
    gap: 2rem 1rem;
  }
  
  .pull-quote {
    margin: 2rem 0;
    padding: 1.25rem;
  }
}


/* Extracted Utility Classes */
.text-amber-bold { color: var(--accent-amber); }
.eyebrow-flex { color: var(--on-surface-variant); display: flex; align-items: center; gap: 0.5rem; }
.text-primary-light { color: var(--primary-light); }
.grid-2-col-gap { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; }
.flex-col-card { flex-direction: column; padding: 1.5rem; margin-top: 3rem; }
.meta-list-padded { font-family: var(--font-meta); font-size: 0.9rem; color: var(--on-surface-variant); padding-left: 1.5rem; }
.text-meta-upper { font-family: var(--font-meta); text-transform: uppercase; letter-spacing: 0.1em; color: var(--primary); }
.fs-95 { font-size: 0.95rem; }
.fs-95-mb-0 { font-size: 0.95rem; margin-bottom: 0; }
.text-amber-bold0 { font-size: 0.95rem; margin-bottom: 1rem; }
.text-amber-bold1 { font-size: 1.05rem; }
.text-amber-bold2 { font-size: 1.1rem; }
.text-xl { font-size: 1.2rem; }
.text-amber-bold3 { font-size: 1.5rem; margin-bottom: 1.5rem; }
.text-amber-bold4 { font-size: 1rem; color: var(--on-surface-variant); }
.text-amber-bold5 { font-size: 2.2rem; }
.text-amber-bold6 { font-size: 2.2rem; color: var(--accent-amber); }
.text-amber-bold7 { font-size: 2.5rem; }
.text-amber-bold8 { font-size: 2.5rem; color: var(--accent-amber); opacity: 0.5; }
.text-amber-bold9 { font-size: 2.5rem; color: var(--primary); opacity: 0.5; }
.eyebrow-flex0 { font-size: 2rem; color: var(--primary); opacity: 0.5; }
.eyebrow-flex5 { list-style: none; padding: 0; margin: 0; color: var(--on-surface-variant); font-size: 0.95rem; line-height: 1.6; }
.eyebrow-flex6 { margin-bottom: 1rem; }
.mb-5rem { margin-bottom: 5rem; }
.mt-3rem { margin-top: 3rem; }
.eyebrow-flex7 { margin-top: 3rem; background-color: var(--surface-container-high); }
.my-4rem { margin-top: 4rem; margin-bottom: 4rem; }
.eyebrow-flex8 { margin-top: 5rem; padding-top: 3rem; border-top: 1px solid var(--outline-variant); }
.eyebrow-flex9 { margin: 0 0.5rem; color: var(--outline-variant); }
.text-primary-light0 { margin: 0; }
.text-primary-light1 { max-width: 1200px; margin: 0 auto 3rem auto; }
.text-primary-light2 { max-width: 1400px; }
.mw-800 { max-width: 800px; }
.text-primary-light3 { text-align: center; margin-bottom: 4rem; }
.w-full-rounded { width: 100%; border-radius: 4px; }

/* Lightbox Utility */
.lightbox-trigger {
  cursor: zoom-in;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.lightbox-trigger:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(0,0,0,0.3);
}

.lightbox-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(9, 15, 18, 0.95);
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.lightbox-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.lightbox-image {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 24px 48px rgba(0,0,0,0.5);
  transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  transform: scale(0.95);
}

.lightbox-overlay.active .lightbox-image {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 2rem;
  right: 2rem;
  color: var(--on-surface);
  background: var(--surface-container);
  border: 1px solid var(--outline-variant);
  border-radius: 50%;
  width: 48px;
  height: 48px;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  z-index: 10000;
}

.lightbox-close:hover {
  background: var(--primary);
  color: var(--surface-dim);
}