:root {
  /* Dark Mode (Premium) */
  --bg-color: #06080d;
  --bg-glass: rgba(10, 14, 23, 0.65);
  --border-glass: rgba(255, 255, 255, 0.08);
  --text-main: #cbd5e1;
  --text-muted: #8492a6;
  --text-heading: #ffffff;
  --accent-1: #00f2fe;
  --accent-2: #4facfe;
  --accent-3: #8a2be2;
  --card-bg: rgba(255, 255, 255, 0.02);
  --card-hover: rgba(255, 255, 255, 0.05);
  --dropdown-bg: rgba(6, 8, 13, 0.98);
  --mermaid-bg: #0a0e17;
  --shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.7);

  --font-body: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-code: 'SFMono-Regular', Consolas, "Liberation Mono", Menlo, Courier, monospace;
}

[data-theme="light"] {
  --bg-color: #f8fafc;
  --bg-glass: rgba(255, 255, 255, 0.85);
  --border-glass: rgba(0, 0, 0, 0.08);
  --text-main: #334155;
  --text-muted: #64748b;
  --text-heading: #0f172a;
  --accent-1: #0ea5e9;
  --accent-2: #3b82f6;
  --accent-3: #8b5cf6;
  --card-bg: rgba(255, 255, 255, 1);
  --card-hover: rgba(248, 250, 252, 1);
  --dropdown-bg: rgba(255, 255, 255, 0.98);
  --mermaid-bg: #ffffff;
  --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.7;
  font-size: 17px;
  overflow-x: hidden;
  position: relative;
  transition: background-color 0.3s ease, color 0.3s ease;
}

/* Background blob effects */
.bg-blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  z-index: -1;
  opacity: 0.6;
  animation: float 20s infinite alternate ease-in-out;
  pointer-events: none;
}

.blob-1 {
  width: 45vw;
  height: 45vw;
  background: radial-gradient(circle, rgba(138,43,226,0.15) 0%, rgba(0,0,0,0) 70%);
  top: -10vw;
  left: -10vw;
}

.blob-2 {
  width: 40vw;
  height: 40vw;
  background: radial-gradient(circle, rgba(79,172,254,0.12) 0%, rgba(0,0,0,0) 70%);
  bottom: -5vw;
  right: -5vw;
  animation-delay: -5s;
}

@keyframes float {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(5%, 5%) scale(1.05); }
  100% { transform: translate(-2%, 8%) scale(0.95); }
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Top Navigation */
.site-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  padding: 1rem 1.5rem;
  background: var(--bg-glass);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border-glass);
  border-radius: 99px;
  position: sticky;
  top: 1rem;
  z-index: 100;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

.nav-logo {
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text-heading);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.icon-btn {
  background: transparent;
  border: none;
  color: var(--text-main);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.icon-btn:hover {
  background: var(--card-hover);
  color: var(--accent-2);
}

/* Hero Section */
.hero {
  text-align: center;
  margin-top: 6rem;
  margin-bottom: 6rem;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.8s forwards cubic-bezier(0.16, 1, 0.3, 1);
}

.hero h1 {
  font-size: 4.5rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.04em;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #fff 20%, var(--accent-2) 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 40px rgba(79, 172, 254, 0.2);
}

[data-theme="light"] .hero h1 {
  background: linear-gradient(135deg, var(--text-heading), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: none;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto;
  line-height: 1.8;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  font-family: var(--font-body);
  color: #fff;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-3));
  border: none;
  border-radius: 99px;
  cursor: pointer;
  box-shadow: 0 10px 30px -10px rgba(0, 242, 254, 0.5);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-cta:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 15px 40px -10px rgba(0, 242, 254, 0.7);
}

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

/* Tabs Container (Segmented Control) */
.tabs-container {
  margin: 2rem 0 4rem;
}

.segmented-control {
  display: flex;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: 99px;
  padding: 0.4rem;
  margin-bottom: 2rem;
  position: relative;
  box-shadow: var(--shadow);
}

.tab-btn {
  flex: 1;
  text-align: center;
  background: transparent;
  border: none;
  padding: 0.8rem 1.5rem;
  color: var(--text-muted);
  font-weight: 600;
  font-family: var(--font-body);
  font-size: 1rem;
  border-radius: 99px;
  cursor: pointer;
  transition: all 0.3s ease;
  z-index: 1;
}

.tab-btn:hover {
  color: var(--text-main);
}

.tab-btn.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .tab-btn.active {
  color: var(--text-heading);
  background: #fff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.tab-content {
  position: absolute;
  left: -9999px;
  visibility: hidden;
  width: 100%;
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  padding: 2.5rem;
  box-shadow: var(--shadow);
}

.tab-content.active {
  position: relative;
  left: 0;
  visibility: visible;
  animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Post Grid & Cards */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.post-card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  padding: 1.8rem;
  text-decoration: none;
  color: var(--text-main);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(20px);
  z-index: 1;
}

.post-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  border-radius: inherit;
  padding: 2px;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-3));
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: -1;
}

.post-card.visible {
  opacity: 1;
  transform: translateY(0);
}

.post-card:hover {
  transform: translateY(-5px);
  background: var(--card-hover);
}

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

.post-card-date {
  font-size: 0.85rem;
  color: var(--accent-2);
  font-weight: 700;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.post-card-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-top: 0;
  margin-bottom: 1rem;
  line-height: 1.3;
}

.post-card-excerpt {
  font-size: 1rem;
  color: var(--text-muted);
  margin: 0;
  flex-grow: 1;
  line-height: 1.6;
}

/* Typography & Content */
h1, h2, h3, h4 {
  color: var(--text-heading);
  font-weight: 700;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  line-height: 1.3;
}

h2 { font-size: 2rem; border-bottom: 1px solid var(--border-glass); padding-bottom: 0.5rem; }
h3 { font-size: 1.5rem; }

a {
  color: var(--accent-2);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent-1);
}

/* Code & Pre */
pre, code {
  font-family: var(--font-code);
  font-size: 0.9em;
}

code {
  background: var(--border-glass);
  padding: 0.2em 0.4em;
  border-radius: 6px;
}

pre {
  background: var(--mermaid-bg) !important;
  border: 1px solid var(--border-glass);
  padding: 1.5rem;
  border-radius: 16px;
  overflow-x: auto;
  line-height: 1.5;
  box-shadow: inset 0 2px 10px rgba(0,0,0,0.2);
}

pre code {
  background: none;
  padding: 0;
  color: inherit;
}

/* Interactive Mermaid Wrapper */
.mermaid {
  background: var(--mermaid-bg);
  border: 1px solid var(--border-glass);
  padding: 2rem;
  border-radius: 16px;
  margin: 2rem 0;
  overflow: auto;
  text-align: center;
  box-shadow: inset 0 2px 20px rgba(0,0,0,0.3);
  cursor: grab;
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mermaid::after {
  content: 'Shift + Scroll to zoom';
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: rgba(255,255,255,0.05);
  padding: 0.3rem 0.8rem;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  pointer-events: none;
  border: 1px solid var(--border-glass);
}

.mermaid:active {
  cursor: grabbing;
}

.mermaid svg {
  width: 100%;
  height: 100ch !important;
  max-width: 100%;
}

/* Post Header */
.post-header {
  margin-bottom: 3.5rem;
  text-align: center;
}

.post-title {
  margin-top: 0;
  font-size: 3rem;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
}

.post-meta {
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-top: 1rem;
}

/* Header Search & Nav */
.nav-left {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links {
  display: flex;
  gap: 1.5rem;
}
.nav-links a {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}
.nav-links a:hover {
  color: var(--text-heading);
}

.search-container {
  position: relative;
  display: flex;
  align-items: center;
}
.search-icon {
  position: absolute;
  left: 12px;
  color: var(--text-muted);
  pointer-events: none;
}
#search-input {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-main);
  padding: 0.5rem 1rem 0.5rem 2.5rem;
  border-radius: 99px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  width: 200px;
  transition: all 0.3s ease;
}
#search-input:focus {
  outline: none;
  border-color: var(--accent-2);
  width: 250px;
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 15px rgba(79, 172, 254, 0.2);
}
.search-results-dropdown {
  display: none;
  position: absolute;
  top: 120%;
  right: 0;
  width: 350px;
  background: var(--dropdown-bg);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  box-shadow: var(--shadow);
  max-height: 400px;
  overflow-y: auto;
  z-index: 200;
  padding: 0.5rem;
}
.search-result-item {
  display: block;
  padding: 0.8rem 1rem;
  border-radius: 12px;
  text-decoration: none;
  transition: background 0.2s ease;
}
.search-result-item:hover {
  background: var(--card-hover);
}
.search-result-title {
  color: var(--accent-2);
  font-weight: 700;
  margin-bottom: 0.2rem;
}
.search-result-excerpt {
  color: var(--text-muted);
  font-size: 0.85rem;
  line-height: 1.4;
}

/* Landing Page Sections */
.section-block {
  margin-bottom: 6rem;
}
.section-header {
  margin-bottom: 3rem;
  text-align: center;
}
.section-header h2 {
  font-size: 2.5rem;
  margin-top: 0;
  margin-bottom: 0.5rem;
  border-bottom: none;
}
.section-header p {
  color: var(--text-muted);
  font-size: 1.1rem;
}
.flex-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  text-align: left;
  border-bottom: 1px solid var(--border-glass);
  padding-bottom: 1rem;
}
.flex-header h2 {
  margin: 0;
}
.view-all-link {
  font-weight: 600;
  font-size: 0.9rem;
}

/* Philosophy Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}
.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
  padding: 2rem;
  transition: transform 0.3s ease;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}
.feature-card:hover {
  transform: translateY(-5px);
  background: var(--card-hover);
}
.feature-icon {
  width: 48px;
  height: 48px;
  color: var(--accent-2);
  margin-bottom: 1.5rem;
}
.feature-card h3 {
  margin-top: 0;
  margin-bottom: 1rem;
}
.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0;
}

/* Reports Page */
.reports-header {
  text-align: center;
  margin-bottom: 4rem;
}
.reports-header h1 {
  font-size: 3.5rem;
  margin-top: 0;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.featured-research {
  position: relative;
  margin-bottom: 5rem;
}
.featured-label {
  position: absolute;
  top: -12px;
  left: 2rem;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  color: #fff;
  padding: 0.3rem 1rem;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  z-index: 10;
  box-shadow: 0 4px 15px rgba(0, 242, 254, 0.4);
}
.featured-post-card {
  display: block;
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: 24px;
  padding: 3rem;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.4s ease;
}
.featured-post-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(circle at top right, rgba(138,43,226,0.1), transparent 50%);
  pointer-events: none;
}
.featured-post-card:hover {
  transform: translateY(-5px);
  border-color: rgba(79, 172, 254, 0.3);
}
.featured-title {
  font-size: 2.5rem;
  margin-top: 0.5rem;
  margin-bottom: 1rem;
  color: var(--text-heading);
}
.featured-excerpt {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 800px;
  margin-bottom: 2rem;
}
.read-more {
  display: inline-block;
  color: var(--accent-1);
  font-weight: 700;
  font-size: 1.1rem;
}

.archive-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.archive-item {
  display: flex;
  gap: 2rem;
  padding: 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  text-decoration: none;
  transition: background 0.3s ease;
}
.archive-item:hover {
  background: var(--card-hover);
}
.archive-date {
  min-width: 120px;
  color: var(--accent-2);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding-top: 0.2rem;
}
.archive-info h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 1.3rem;
}
.archive-info p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Document Library */
.library-hero {
  margin-bottom: 3rem;
  text-align: center;
}

.library-eyebrow {
  margin: 0 0 0.75rem;
  color: var(--accent-2);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.library-hero h1 {
  margin-top: 0;
  margin-bottom: 1rem;
  font-size: 3.5rem;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.library-hero p {
  max-width: 760px;
  margin: 0 auto;
  color: var(--text-muted);
  font-size: 1.08rem;
}

.library-stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.library-stat-card {
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: 18px;
  padding: 1.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  box-shadow: var(--shadow);
}

.library-stat-value {
  color: var(--text-heading);
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
}

.library-stat-label {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.section-header-left {
  text-align: left;
}

.document-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.compact-grid {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.document-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: 22px;
  padding: 1.6rem;
  box-shadow: var(--shadow);
  scroll-margin-top: 7rem;
}

.document-card.compact {
  padding: 1.35rem;
}

.document-header {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.document-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.document-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-glass);
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.document-chip.accent {
  color: #fff;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-3));
  border-color: transparent;
}

.document-chip.muted {
  background: transparent;
}

.document-title {
  margin: 0;
  font-size: 1.35rem;
  line-height: 1.35;
}

.document-card.compact .document-title {
  font-size: 1.15rem;
}

.document-abstract {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.98rem;
}

.document-citation {
  margin: 0;
  color: var(--text-main);
  font-size: 0.9rem;
  font-weight: 600;
}

.document-doi {
  color: var(--accent-2);
  word-break: break-all;
}

.document-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.document-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.22rem 0.65rem;
  border-radius: 999px;
  background: rgba(79, 172, 254, 0.08);
  color: var(--accent-2);
  font-size: 0.8rem;
}

.document-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: auto;
}

.document-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1rem;
  border-radius: 12px;
  border: 1px solid var(--border-glass);
  background: transparent;
  color: var(--text-main);
  font-weight: 700;
  font-size: 0.9rem;
}

.document-btn:hover {
  border-color: rgba(79, 172, 254, 0.35);
  background: var(--card-hover);
}

.document-btn.primary {
  color: #fff;
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent-1), var(--accent-3));
}

.post-reference-strip {
  margin-bottom: 2.5rem;
  padding: 1.5rem;
  background: rgba(79, 172, 254, 0.04);
  border: 1px solid var(--border-glass);
  border-radius: 20px;
}

.post-reference-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1.25rem;
}

.post-reference-label {
  display: inline-block;
  margin-bottom: 0.35rem;
  color: var(--accent-2);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.post-reference-copy {
  margin: 0;
  color: var(--text-muted);
}

.reports-reference-band {
  margin-bottom: 4rem;
}

/* Data Visualizations */
.viz-container {
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  padding: 2rem;
  margin: 2rem 0;
  box-shadow: inset 0 2px 20px rgba(0,0,0,0.1);
}
.viz-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-top: 0;
  margin-bottom: 1.5rem;
  color: var(--accent-2);
  text-align: center;
}
.stat-row {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
  gap: 1rem;
}
.stat-label {
  flex: 0 0 140px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-heading);
}
.stat-bar-wrapper {
  flex: 1;
  height: 24px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  overflow: hidden;
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.1);
}
.stat-bar-fill {
  height: 100%;
  border-radius: 12px;
  background: linear-gradient(90deg, var(--accent-1), var(--accent-2));
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-right: 0.5rem;
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
}
.stat-bar-fill.fill-red {
  background: linear-gradient(90deg, #ff4b4b, #ff0000);
}
.stat-bar-fill.fill-purple {
  background: linear-gradient(90deg, #8a2be2, #4facfe);
}
.stat-value {
  flex: 0 0 60px;
  font-family: monospace;
  font-size: 0.9rem;
  color: var(--text-muted);
  text-align: right;
}

/* SVG Vector Art */
.vector-art-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 3rem 0;
  margin: 3rem 0;
  background: radial-gradient(circle at center, rgba(138,43,226,0.1) 0%, transparent 70%);
  border-radius: 30px;
}
.glow-path {
  stroke-dasharray: 1000;
  stroke-dashoffset: 1000;
  animation: drawPath 3s ease forwards, pulseGlow 4s infinite alternate;
}
@keyframes drawPath {
  to { stroke-dashoffset: 0; }
}
@keyframes pulseGlow {
  from { filter: drop-shadow(0 0 5px var(--accent-1)); }
  to { filter: drop-shadow(0 0 20px var(--accent-2)); }
}

/* Cohort Cards */
.cohort-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}
.cohort-card {
  background: var(--card-bg);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: var(--shadow);
}
.cohort-card.recoverable {
  border-top: 4px solid var(--accent-1);
}
.cohort-card.unrecoverable {
  border-top: 4px solid #ff4b4b;
}
.cohort-header {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-heading);
}
.cohort-stat {
  display: flex;
  justify-content: space-between;
  margin-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  padding-bottom: 0.5rem;
}
.cohort-stat:last-child {
  border-bottom: none;
}
.cohort-stat span:first-child {
  color: var(--text-muted);
}
.cohort-stat span:last-child {
  font-weight: bold;
  font-family: monospace;
}

/* Footer */
.site-footer {
  margin-top: auto;
  padding-top: 4rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  border-top: 1px solid var(--border-glass);
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .hero h1 { font-size: 3rem; }
  .segmented-control { flex-direction: column; border-radius: 16px; }
  .tab-btn { border-radius: 12px; margin-bottom: 0.2rem; }
  .tab-btn:last-child { margin-bottom: 0; }
  .post-grid { grid-template-columns: 1fr; }
  .tab-content { padding: 1.5rem; }
  .site-nav {
    border-radius: 24px;
    padding: 1rem;
  }
  .nav-left,
  .nav-actions,
  .nav-links {
    flex-wrap: wrap;
  }
  .search-results-dropdown {
    width: min(88vw, 350px);
  }
  .library-hero h1,
  .reports-header h1,
  .post-title {
    font-size: 2.6rem;
  }
  .flex-header,
  .post-reference-header,
  .archive-item,
  .stat-row {
    flex-direction: column;
    align-items: flex-start;
  }
  .archive-date,
  .stat-label,
  .stat-value {
    min-width: 0;
    text-align: left;
  }
  .document-actions {
    width: 100%;
  }
  .document-btn {
    flex: 1 1 100%;
  }
}