/* ============================================
   GOOGLE BIPA SETTLEMENT ILLINOIS - STYLES
   Mobile-first, dark theme default
   ============================================ */

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
  --background: #f0f4ff;
  --foreground: #0d1117;
  --card: #ffffff;
  --card-foreground: #0d1117;
  --popover: #ffffff;
  --popover-foreground: #0d1117;
  --primary: #2563eb;
  --primary-foreground: #ffffff;
  --secondary: #e8edf8;
  --secondary-foreground: #1e293b;
  --muted: #e2e8f0;
  --muted-foreground: #475569;
  --accent: #7c3aed;
  --accent-foreground: #ffffff;
  --destructive: #dc2626;
  --destructive-foreground: #ffffff;
  --border: #c7d2e8;
  --input: #f1f5fb;
  --ring: #2563eb;

  /* Neon accents */
  --neon-blue: #63b3ed;
  --neon-purple: #9f7aea;
  --neon-green: #68d391;
  --neon-amber: #f6ad55;

  /* Spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.15), 0 2px 6px rgba(0,0,0,0.10);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.20), 0 4px 12px rgba(0,0,0,0.12);
  --glow-blue: 0 0 20px rgba(99, 179, 237, 0.3);
  --glow-purple: 0 0 20px rgba(159, 122, 234, 0.3);
  --glow-green: 0 0 20px rgba(104, 211, 145, 0.3);
  --glow-amber: 0 0 20px rgba(246, 173, 85, 0.3);
}

[data-theme="dark"] {
  --background: #0a0a14;
  --foreground: #f0f4ff;
  --card: #0f0f1e;
  --card-foreground: #e8edf8;
  --popover: #0f0f1e;
  --popover-foreground: #e8edf8;
  --primary: #63b3ed;
  --primary-foreground: #0a0a14;
  --secondary: #1a1a2e;
  --secondary-foreground: #a0aec0;
  --muted: #1e1e32;
  --muted-foreground: #94a3b8;
  --accent: #9f7aea;
  --accent-foreground: #0a0a14;
  --destructive: #fc8181;
  --destructive-foreground: #0a0a14;
  --border: #2d2d4a;
  --input: #16162a;
  --ring: #63b3ed;
}

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--background);
  color: var(--foreground);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--transition-slow), color var(--transition-slow);
}

img, video, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol {
  list-style: none;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--neon-blue);
}

a:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

button:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

p, li, td, th {
  overflow-wrap: break-word;
}

/* ============================================
   LAYOUT - CONTAINER
   ============================================ */
.container {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-8);
  }
}

@media (min-width: 1024px) {
  .container {
    padding-inline: var(--space-12);
  }
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: var(--card);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: background-color var(--transition-slow), border-color var(--transition-slow);
}

[data-theme="dark"] .site-header {
  background-color: rgba(15, 15, 30, 0.92);
  border-bottom-color: var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  height: 64px;
}

/* Logo */
.header-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  text-decoration: none;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Desktop Nav */
.nav-desktop {
  display: none;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
}

@media (min-width: 1024px) {
  .nav-desktop {
    display: flex;
  }
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted-foreground);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--foreground);
  background-color: var(--muted);
}

.nav-cta {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary-foreground);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-md);
  white-space: nowrap;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.nav-cta:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  color: var(--primary-foreground);
}

/* Theme Toggle */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--input);
  color: var(--foreground);
  cursor: pointer;
  flex-shrink: 0;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  margin-left: auto;
}

@media (min-width: 1024px) {
  .theme-toggle {
    margin-left: 0;
  }
}

.theme-toggle:hover {
  background-color: var(--muted);
  border-color: var(--primary);
  color: var(--primary);
}

/* Burger Button */
.burger {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--input);
  cursor: pointer;
  flex-shrink: 0;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

@media (min-width: 1024px) {
  .burger {
    display: none;
  }
}

.burger:hover {
  background-color: var(--muted);
  border-color: var(--primary);
}

.burger-icon {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 22px;
}

.burger-icon span {
  display: block;
  height: 2px;
  background-color: var(--foreground);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base), width var(--transition-base);
  transform-origin: center;
}

.burger[aria-expanded="true"] .burger-icon span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.burger[aria-expanded="true"] .burger-icon span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.burger[aria-expanded="true"] .burger-icon span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Menu */
.nav-mobile {
  display: flex;
  flex-direction: column;
  background-color: var(--card);
  border-top: 1px solid var(--border);
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--transition-slow), padding var(--transition-base);
  padding: 0 var(--space-4);
}

[data-theme="dark"] .nav-mobile {
  background-color: rgba(15, 15, 30, 0.97);
}

.nav-mobile.open {
  max-height: 420px;
  padding: var(--space-4);
  padding-bottom: var(--space-6);
}

.mobile-nav-link {
  display: block;
  font-size: 1rem;
  font-weight: 500;
  color: var(--foreground);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  border-bottom: 1px solid var(--border);
  transition: background-color var(--transition-fast), color var(--transition-fast);
  min-height: 44px;
  display: flex;
  align-items: center;
}

.mobile-nav-link:last-child {
  border-bottom: none;
}

.mobile-nav-link:hover {
  background-color: var(--muted);
  color: var(--primary);
}

.mobile-nav-cta {
  margin-top: var(--space-3);
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: var(--primary-foreground);
  font-weight: 700;
  justify-content: center;
  border-bottom: none !important;
  border-radius: var(--radius-md);
}

.mobile-nav-cta:hover {
  opacity: 0.9;
  color: var(--primary-foreground);
}

/* ============================================
   MAIN CONTENT - SECTIONS
   ============================================ */
#main-content {
  padding-top: 64px; /* height of fixed header */
}

.section {
  padding-block: var(--space-16);
}

@media (min-width: 768px) {
  .section {
    padding-block: var(--space-20);
  }
}

.section-dark {
  background-color: var(--background);
}

.section-dotted {
  background-color: var(--secondary);
  position: relative;
}

[data-theme="dark"] .section-dotted {
  background-color: #0d0d20;
  background-image: radial-gradient(circle, rgba(99,179,237,0.06) 1px, transparent 1px);
  background-size: 28px 28px;
}

/* ============================================
   HERO BLOCK
   ============================================ */
.section-hero {
  text-align: center;
  padding-block: var(--space-10) var(--space-12);
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--neon-blue) 0%, var(--neon-purple) 60%, var(--neon-amber) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-6);
}

.neon-divider {
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple));
  border-radius: 2px;
  margin-inline: auto;
  margin-bottom: var(--space-6);
  box-shadow: 0 0 12px rgba(99,179,237,0.5);
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--muted-foreground);
  max-width: 680px;
  margin-inline: auto;
  margin-bottom: var(--space-6);
  line-height: 1.65;
}

.disclaimer-badge {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--muted-foreground);
  background-color: var(--muted);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: var(--space-2) var(--space-5);
  letter-spacing: 0.01em;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadein {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeindelay {
  0%, 30% { opacity: 0; transform: translateY(20px); }
  100% { opacity: 1; transform: translateY(0); }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 10px rgba(99,179,237,0.4), 0 4px 15px rgba(99,179,237,0.2); }
  50% { box-shadow: 0 0 20px rgba(99,179,237,0.7), 0 4px 25px rgba(99,179,237,0.4); }
}

@keyframes pulse-glow-green {
  0%, 100% { box-shadow: 0 0 10px rgba(104,211,145,0.4), 0 4px 15px rgba(104,211,145,0.2); }
  50% { box-shadow: 0 0 20px rgba(104,211,145,0.7), 0 4px 25px rgba(104,211,145,0.4); }
}

@keyframes pulse-glow-amber {
  0%, 100% { box-shadow: 0 0 10px rgba(246,173,85,0.4), 0 4px 15px rgba(246,173,85,0.2); }
  50% { box-shadow: 0 0 20px rgba(246,173,85,0.7), 0 4px 25px rgba(246,173,85,0.4); }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

@keyframes timeline-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(99,179,237,0.4); }
  50% { box-shadow: 0 0 0 8px rgba(99,179,237,0); }
}

.animate-fadein {
  animation: fadein 0.7s ease forwards;
}

.animate-fadein-delay {
  animation: fadeindelay 1.1s ease forwards;
}

/* ============================================
   TABLE OF CONTENTS
   ============================================ */
.toc-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-6) var(--space-8);
  margin-bottom: var(--space-12);
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] .toc-card {
  background: linear-gradient(135deg, rgba(99,179,237,0.05), rgba(159,122,234,0.05));
  border-color: rgba(99,179,237,0.2);
}

.toc-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--foreground);
  margin-bottom: var(--space-4);
  letter-spacing: -0.01em;
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  list-style: none;
  counter-reset: none;
}

.toc-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--primary);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast), padding-left var(--transition-fast);
}

.toc-link:hover {
  background-color: var(--muted);
  padding-left: var(--space-5);
  color: var(--neon-blue);
}

/* ============================================
   SECTION HEADINGS
   ============================================ */
.section-heading {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  line-height: 1.2;
  color: var(--foreground);
  margin-bottom: var(--space-6);
}

.subsection-heading {
  font-size: clamp(1.125rem, 2.5vw, 1.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--foreground);
  margin-bottom: var(--space-4);
  margin-top: var(--space-8);
}

.accent-green {
  color: var(--neon-green);
  text-shadow: 0 0 30px rgba(104,211,145,0.3);
}

.accent-amber {
  color: var(--neon-amber);
  text-shadow: 0 0 30px rgba(246,173,85,0.3);
}

/* ============================================
   PROSE CONTENT
   ============================================ */
.content-prose {
  max-width: 780px;
  margin-bottom: var(--space-8);
}

.content-prose p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--muted-foreground);
  margin-bottom: var(--space-4);
}

@media (min-width: 768px) {
  .content-prose p {
    font-size: 1.0625rem;
  }
}

.prose-list {
  list-style: disc;
  padding-left: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.prose-list li {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--muted-foreground);
}

/* ============================================
   GLASS CARDS
   ============================================ */
.cards-grid-2x2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .cards-grid-2x2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.cards-grid-3col {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  margin-bottom: var(--space-12);
}

@media (min-width: 640px) {
  .cards-grid-3col {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .cards-grid-3col {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.glass-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

[data-theme="dark"] .glass-card {
  background: linear-gradient(135deg, rgba(255,255,255,0.04), rgba(255,255,255,0.02));
  border-color: var(--border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.glass-card:hover,
.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

[data-theme="dark"] .glass-card:hover,
[data-theme="dark"] .hover-lift:hover {
  box-shadow: var(--glow-blue);
  border-color: var(--neon-blue);
}

.card-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--muted);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
  color: var(--primary);
}

[data-theme="dark"] .card-icon {
  background: rgba(99,179,237,0.1);
  color: var(--neon-blue);
}

.card-icon.card-amber {
  color: var(--neon-amber);
}

[data-theme="dark"] .card-icon.card-amber {
  background: rgba(246,173,85,0.1);
  color: var(--neon-amber);
}

.card-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--card-foreground);
  margin-bottom: var(--space-3);
  letter-spacing: -0.01em;
}

.card-text {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--muted-foreground);
}

.card-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--neon-amber);
  background: rgba(246,173,85,0.12);
  border: 1px solid rgba(246,173,85,0.25);
  border-radius: 999px;
  padding: 2px var(--space-3);
  margin-bottom: var(--space-3);
  letter-spacing: 0.03em;
}

/* ============================================
   CONCEPT TAGS ROW
   ============================================ */
.tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-12);
}

.concept-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--foreground);
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: var(--space-2) var(--space-4);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), color var(--transition-fast);
}

[data-theme="dark"] .concept-tag {
  background: var(--secondary);
  color: var(--secondary-foreground);
}

.concept-tag:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: var(--glow-blue);
}

.concept-tag svg {
  flex-shrink: 0;
  color: var(--primary);
}

[data-theme="dark"] .concept-tag svg {
  color: var(--neon-blue);
}

/* ============================================
   CHECK LIST
   ============================================ */
.check-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
  list-style: none;
}

.check-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--muted-foreground);
  transition: border-color var(--transition-fast);
}

[data-theme="dark"] .check-item {
  background: rgba(99,179,237,0.04);
}

.check-item:hover {
  border-color: var(--neon-green);
}

.check-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  min-width: 28px;
  border-radius: 50%;
  background: rgba(104,211,145,0.15);
  color: var(--neon-green);
  font-size: 0.875rem;
  font-weight: 700;
  flex-shrink: 0;
}

.check-item strong {
  color: var(--foreground);
  font-weight: 600;
}

/* ============================================
   IMAGE PAIR
   ============================================ */
.image-pair {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .image-pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.section-image-wrap {
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--muted);
  border: 1px solid var(--border);
  margin: 0;
}

.section-img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-slow);
}

@media (min-width: 768px) {
  .section-img {
    height: 300px;
  }
}

.section-image-wrap:hover .section-img {
  transform: scale(1.03);
}

.img-caption {
  font-size: 0.8125rem;
  color: var(--muted-foreground);
  padding: var(--space-3) var(--space-4);
  line-height: 1.5;
  border-top: 1px solid var(--border);
}

/* ============================================
   TIMELINE
   ============================================ */
.timeline {
  position: relative;
  padding-left: var(--space-8);
  margin-bottom: var(--space-12);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--neon-blue), var(--neon-purple), transparent);
  border-radius: 1px;
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-8);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: calc(-1 * var(--space-8) + 5px);
  top: 5px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--neon-blue);
  border: 3px solid var(--background);
  box-shadow: 0 0 10px rgba(99,179,237,0.5);
  animation: timeline-pulse 2.5s ease-in-out infinite;
}

.timeline-content {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

[data-theme="dark"] .timeline-content {
  background: rgba(99,179,237,0.04);
}

.timeline-item:hover .timeline-content {
  border-color: var(--neon-blue);
  box-shadow: var(--glow-blue);
}

.timeline-year {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  color: var(--neon-blue);
  background: rgba(99,179,237,0.1);
  border: 1px solid rgba(99,179,237,0.25);
  border-radius: var(--radius-sm);
  padding: 2px var(--space-3);
  margin-bottom: var(--space-2);
  letter-spacing: 0.05em;
}

.timeline-event {
  font-size: 1rem;
  font-weight: 700;
  color: var(--foreground);
  margin-bottom: var(--space-2);
}

.timeline-content p {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--muted-foreground);
}

/* ============================================
   KEY CONCEPTS - ACCORDION
   ============================================ */
.key-concepts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .key-concepts-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .key-concepts-grid {
    grid-template-columns: 1fr;
  }
}

.concept-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

[data-theme="dark"] .concept-card {
  background: rgba(255,255,255,0.03);
}

.concept-card[open] {
  border-color: var(--primary);
}

[data-theme="dark"] .concept-card[open] {
  border-color: var(--neon-purple);
  box-shadow: var(--glow-purple);
}

.concept-summary {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--foreground);
  padding: var(--space-4) var(--space-5);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
  list-style: none;
  min-height: 52px;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.concept-summary::-webkit-details-marker {
  display: none;
}

.concept-summary::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--muted-foreground);
  transition: transform var(--transition-base), color var(--transition-fast);
  flex-shrink: 0;
}

.concept-card[open] .concept-summary::after {
  content: '−';
  color: var(--primary);
}

.concept-summary:hover {
  color: var(--primary);
  background-color: var(--muted);
}

.concept-detail {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--muted-foreground);
  padding: 0 var(--space-5) var(--space-5);
  border-top: 1px solid var(--border);
  padding-top: var(--space-4);
}

/* ============================================
   TABLES
   ============================================ */
.table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  margin-bottom: var(--space-12);
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 520px;
  background: var(--card);
}

.table-caption {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--muted-foreground);
  padding: var(--space-4) var(--space-5);
  text-align: left;
  border-bottom: 1px solid var(--border);
  caption-side: top;
}

.data-table thead tr {
  background: var(--muted);
}

[data-theme="dark"] .data-table thead tr {
  background: rgba(99,179,237,0.08);
}

.data-table th {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted-foreground);
  padding: var(--space-3) var(--space-5);
  text-align: left;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table td {
  font-size: 0.9375rem;
  color: var(--foreground);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border);
  line-height: 1.5;
  vertical-align: top;
}

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

.data-table tbody tr:hover {
  background: var(--muted);
}

[data-theme="dark"] .data-table tbody tr:hover {
  background: rgba(99,179,237,0.04);
}

.row-highlight td {
  background: rgba(99,179,237,0.06);
}

.row-highlight:hover td {
  background: rgba(99,179,237,0.1) !important;
}

.payout-amt {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  color: var(--neon-green);
  font-size: 1rem;
}

/* ============================================
   STATISTICS GRID
   ============================================ */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  margin-bottom: var(--space-12);
}

@media (min-width: 640px) {
  .stats-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-fast);
}

[data-theme="dark"] .stat-card {
  background: linear-gradient(135deg, rgba(255,255,255,0.04), rgba(255,255,255,0.01));
}

.stat-card:hover {
  transform: translateY(-3px);
  border-color: var(--primary);
  box-shadow: var(--glow-blue);
}

.stat-number {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: var(--space-3);
}

.stat-blue { color: var(--neon-blue); text-shadow: 0 0 20px rgba(99,179,237,0.4); }
.stat-purple { color: var(--neon-purple); text-shadow: 0 0 20px rgba(159,122,234,0.4); }
.stat-green { color: var(--neon-green); text-shadow: 0 0 20px rgba(104,211,145,0.4); }
.stat-amber { color: var(--neon-amber); text-shadow: 0 0 20px rgba(246,173,85,0.4); }

.stat-label {
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--muted-foreground);
}

/* ============================================
   QUOTE HIGHLIGHT
   ============================================ */
.quote-highlight {
  position: relative;
  font-size: clamp(1.0625rem, 2.5vw, 1.375rem);
  font-weight: 600;
  line-height: 1.55;
  font-style: italic;
  padding: var(--space-8) var(--space-8) var(--space-8) var(--space-12);
  border-radius: var(--radius-xl);
  background: var(--card);
  border: 1px solid var(--border);
  margin-bottom: var(--space-12);
}

.quote-highlight::before {
  content: '"';
  position: absolute;
  left: var(--space-5);
  top: var(--space-4);
  font-size: 4rem;
  font-family: Georgia, serif;
  line-height: 1;
  font-style: normal;
}

.quote-purple {
  color: var(--neon-purple);
  border-color: rgba(159,122,234,0.3);
  background: linear-gradient(135deg, rgba(159,122,234,0.08), rgba(99,179,237,0.04));
}

.quote-purple::before { color: rgba(159,122,234,0.4); }

.quote-green {
  color: var(--neon-green);
  border-color: rgba(104,211,145,0.3);
  background: linear-gradient(135deg, rgba(104,211,145,0.08), rgba(99,179,237,0.04));
}

.quote-green::before { color: rgba(104,211,145,0.4); }

.quote-amber {
  color: var(--neon-amber);
  border-color: rgba(246,173,85,0.3);
  background: linear-gradient(135deg, rgba(246,173,85,0.08), rgba(246,173,85,0.02));
}

.quote-amber::before { color: rgba(246,173,85,0.4); }

/* ============================================
   CTA BUTTONS
   ============================================ */
.info-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
  text-align: center;
}

@media (min-width: 640px) {
  .info-cta {
    flex-direction: row;
    justify-content: center;
  }
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 52px;
  padding: 0 var(--space-8);
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: transform var(--transition-fast), opacity var(--transition-fast), box-shadow var(--transition-base);
  letter-spacing: 0.01em;
  border: 2px solid transparent;
}

.cta-btn:hover {
  transform: translateY(-2px);
  opacity: 0.93;
}

.cta-btn:active {
  transform: translateY(0);
}

.cta-primary {
  color: #0a0a14;
  background: linear-gradient(135deg, var(--neon-blue), var(--primary));
  border-color: var(--neon-blue);
}

.cta-green {
  color: #0a0a14;
  background: linear-gradient(135deg, var(--neon-green), #38a169);
  border-color: var(--neon-green);
}

.cta-amber {
  color: #0a0a14;
  background: linear-gradient(135deg, var(--neon-amber), #dd6b20);
  border-color: var(--neon-amber);
}

/* Pulse animation for CTAs */
.pulse-cta {
  animation: pulse-glow 2.8s ease-in-out infinite;
}

.cta-green.pulse-cta {
  animation: pulse-glow-green 2.8s ease-in-out infinite;
}

.cta-amber.pulse-cta {
  animation: pulse-glow-amber 2.8s ease-in-out infinite;
}

.cta-link-secondary {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--muted-foreground);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.cta-link-secondary:hover {
  color: var(--primary);
  border-color: var(--primary);
}

/* ============================================
   SECTION BRIDGE
   ============================================ */
.section-bridge {
  text-align: center;
  padding-top: var(--space-8);
  border-top: 1px solid var(--border);
  margin-top: var(--space-8);
}

.section-bridge p {
  font-size: 1rem;
  color: var(--muted-foreground);
  margin-bottom: var(--space-3);
}

.bounce-arrow {
  font-size: 1.5rem;
  color: var(--primary);
  animation: bounce 1.8s ease-in-out infinite;
  display: inline-block;
}

/* ============================================
   SECTION 2 - INTRO HIGHLIGHT
   ============================================ */
.intro-highlight {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--muted-foreground);
  border-left: 4px solid var(--primary);
  padding: var(--space-5) var(--space-6);
  background: var(--card);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  margin-bottom: var(--space-10);
}

[data-theme="dark"] .intro-highlight {
  background: rgba(99,179,237,0.05);
}

.intro-green {
  border-color: var(--neon-green);
}

[data-theme="dark"] .intro-green {
  background: rgba(104,211,145,0.05);
}

.intro-amber {
  border-color: var(--neon-amber);
}

[data-theme="dark"] .intro-amber {
  background: rgba(246,173,85,0.05);
}

/* ============================================
   STEPPER
   ============================================ */
.stepper {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: var(--space-12);
  list-style: none;
  position: relative;
}

.stepper::before {
  content: '';
  position: absolute;
  left: 22px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--neon-blue), transparent);
}

.stepper-amber::before {
  background: linear-gradient(to bottom, var(--neon-amber), transparent);
}

.stepper-item {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
  padding-bottom: var(--space-8);
  position: relative;
}

.stepper-item:last-child {
  padding-bottom: 0;
}

.stepper-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  min-width: 46px;
  border-radius: 50%;
  background: var(--muted);
  border: 2px solid var(--border);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--muted-foreground);
  transition: background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base), box-shadow var(--transition-base);
  position: relative;
  z-index: 1;
}

.stepper-active .stepper-num {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--primary-foreground);
  box-shadow: var(--glow-blue);
}

[data-theme="dark"] .stepper-active .stepper-num {
  background: var(--neon-blue);
  border-color: var(--neon-blue);
  color: #0a0a14;
}

.stepper-item:hover .stepper-num {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--primary-foreground);
}

.stepper-num-amber {
  background: rgba(246,173,85,0.15);
  border-color: var(--neon-amber);
  color: var(--neon-amber);
}

.stepper-item:hover .stepper-num-amber {
  background: var(--neon-amber);
  color: #0a0a14;
}

.stepper-content {
  padding-top: var(--space-2);
  flex: 1;
  min-width: 0;
}

.stepper-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--foreground);
  margin-bottom: var(--space-2);
}

.stepper-content p {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--muted-foreground);
}

/* ============================================
   CHECKLIST CARD
   ============================================ */
.checklist-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-bottom: var(--space-10);
}

[data-theme="dark"] .checklist-card {
  background: linear-gradient(135deg, rgba(104,211,145,0.06), rgba(99,179,237,0.04));
  border-color: rgba(104,211,145,0.2);
}

.checklist-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--foreground);
  margin-bottom: var(--space-6);
}

.checklist-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--neon-green), #38a169);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.checklist-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  list-style: none;
}

.checklist-item {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--muted-foreground);
}

.check-svg {
  flex-shrink: 0;
  margin-top: 3px;
}

/* ============================================
   MISTAKES CARD
   ============================================ */
.mistakes-card {
  background: var(--card);
  border: 1px solid var(--destructive);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-bottom: var(--space-12);
}

[data-theme="dark"] .mistakes-card {
  background: rgba(252,129,129,0.05);
  border-color: rgba(252,129,129,0.3);
}

.mistakes-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--destructive);
  margin-bottom: var(--space-5);
}

.mistakes-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  list-style: none;
}

.mistake-item {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--muted-foreground);
}

.mistake-item strong {
  color: var(--foreground);
}

.x-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  min-width: 24px;
  border-radius: 50%;
  background: rgba(220,38,38,0.12);
  color: var(--destructive);
  font-size: 0.8125rem;
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ============================================
   FLOW STEPS
   ============================================ */
.flow-steps {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-12);
  justify-content: flex-start;
}

.flow-step {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  background: var(--card);
  flex: 1 1 160px;
  min-width: 0;
}

.flow-blue {
  border-color: rgba(99,179,237,0.3);
}

[data-theme="dark"] .flow-blue {
  background: rgba(99,179,237,0.07);
}

.flow-purple {
  border-color: rgba(159,122,234,0.3);
}

[data-theme="dark"] .flow-purple {
  background: rgba(159,122,234,0.07);
}

.flow-step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  min-width: 36px;
  border-radius: 50%;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.875rem;
  font-weight: 700;
  flex-shrink: 0;
}

.flow-blue .flow-step-num {
  background: rgba(99,179,237,0.15);
  color: var(--neon-blue);
}

.flow-purple .flow-step-num {
  background: rgba(159,122,234,0.15);
  color: var(--neon-purple);
}

.flow-step-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--foreground);
  line-height: 1.3;
}

.flow-arrow {
  font-size: 1.25rem;
  color: var(--muted-foreground);
  flex-shrink: 0;
  display: none;
}

@media (min-width: 768px) {
  .flow-arrow {
    display: block;
  }
}

/* ============================================
   PRACTICAL CHECKLIST (NUMBERED)
   ============================================ */
.practical-checklist {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-bottom: var(--space-12);
}

[data-theme="dark"] .practical-checklist {
  background: rgba(99,179,237,0.04);
}

.numbered-checklist {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  list-style: none;
  counter-reset: numbered-list;
}

.numbered-checklist li {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--muted-foreground);
  counter-increment: numbered-list;
}

.numbered-checklist li::before {
  content: counter(numbered-list);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  min-width: 28px;
  border-radius: 50%;
  background: var(--muted);
  border: 1px solid var(--border);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 1px;
}

/* ============================================
   SECTION 3 - COMPARISON GRID
   ============================================ */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .comparison-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.compare-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8) var(--space-6);
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.compare-card:hover {
  transform: translateY(-5px);
}

.compare-top {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
}

.compare-blue .compare-top { background: linear-gradient(90deg, var(--neon-blue), var(--primary)); }
.compare-blue:hover { box-shadow: var(--glow-blue); border-color: var(--neon-blue); }

.compare-green .compare-top { background: linear-gradient(90deg, var(--neon-green), #38a169); }
.compare-green:hover { box-shadow: var(--glow-green); border-color: var(--neon-green); }

.compare-purple .compare-top { background: linear-gradient(90deg, var(--neon-purple), var(--accent)); }
.compare-purple:hover { box-shadow: var(--glow-purple); border-color: var(--neon-purple); }

.compare-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--foreground);
  margin-bottom: var(--space-3);
  margin-top: var(--space-2);
}

.compare-fund {
  font-size: 0.8125rem;
  color: var(--muted-foreground);
  margin-bottom: var(--space-1);
}

.compare-claims {
  font-size: 0.8125rem;
  color: var(--muted-foreground);
  margin-bottom: var(--space-4);
}

.compare-payout {
  font-family: 'JetBrains Mono', monospace;
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: var(--space-1);
}

.compare-blue .compare-payout { color: var(--neon-blue); }
.compare-green .compare-payout { color: var(--neon-green); }
.compare-purple .compare-payout { color: var(--neon-purple); }

.compare-label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--muted-foreground);
  margin-bottom: var(--space-5);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.compare-insight {
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--muted-foreground);
  border-top: 1px solid var(--border);
  padding-top: var(--space-4);
}

/* ============================================
   FACTORS CARD
   ============================================ */
.factors-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin-bottom: var(--space-12);
}

[data-theme="dark"] .factors-card {
  background: rgba(246,173,85,0.04);
  border-color: rgba(246,173,85,0.15);
}

.factors-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  list-style: none;
}

.factor-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--muted-foreground);
}

.factor-item strong {
  color: var(--foreground);
}

.factor-dot {
  display: block;
  width: 10px;
  height: 10px;
  min-width: 10px;
  border-radius: 50%;
  background: var(--neon-amber);
  box-shadow: 0 0 8px rgba(246,173,85,0.5);
  margin-top: 7px;
  flex-shrink: 0;
}

/* ============================================
   CONCLUSION BLOCK
   ============================================ */
.conclusion-block {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-10) var(--space-8);
  margin-bottom: var(--space-12);
}

[data-theme="dark"] .conclusion-block {
  background: linear-gradient(135deg, rgba(99,179,237,0.06), rgba(159,122,234,0.04));
  border-color: rgba(99,179,237,0.2);
}

.conclusion-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  margin-bottom: var(--space-8);
  list-style: none;
}

.conclusion-list li {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--muted-foreground);
}

.conclusion-list svg {
  flex-shrink: 0;
  margin-top: 2px;
}

.disclaimer-block {
  background: var(--muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-5) var(--space-6);
}

[data-theme="dark"] .disclaimer-block {
  background: rgba(255,255,255,0.03);
}

.disclaimer-block p {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--muted-foreground);
}

/* ============================================
   FAQ
   ============================================ */
.faq-block {
  margin-top: var(--space-4);
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-3);
  overflow: hidden;
  background: var(--card);
  transition: border-color var(--transition-fast);
}

[data-theme="dark"] .faq-item {
  background: rgba(255,255,255,0.02);
}

.faq-item[open] {
  border-color: var(--primary);
}

[data-theme="dark"] .faq-item[open] {
  border-color: var(--neon-blue);
  box-shadow: var(--glow-blue);
}

.faq-question {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--foreground);
  padding: var(--space-5) var(--space-6);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 60px;
  user-select: none;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform var(--transition-base);
  line-height: 1;
}

.faq-item[open] .faq-question::after {
  content: '−';
}

.faq-question:hover {
  background-color: var(--muted);
  color: var(--primary);
}

.faq-answer {
  padding: var(--space-5) var(--space-6) var(--space-6);
  border-top: 1px solid var(--border);
}

.faq-answer p {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--muted-foreground);
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
  background: var(--card);
  border-top: 1px solid var(--border);
  padding-top: var(--space-16);
  padding-bottom: var(--space-8);
}

[data-theme="dark"] .site-footer {
  background: #07071a;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-8);
  }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-desc {
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--muted-foreground);
}

.footer-col-title {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted-foreground);
  margin-bottom: var(--space-4);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  list-style: none;
}

.footer-link {
  font-size: 0.9rem;
  color: var(--muted-foreground);
  padding: var(--space-1) 0;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
  display: inline-block;
}

.footer-link:hover {
  color: var(--primary);
  padding-left: var(--space-2);
}

.footer-keywords .footer-link {
  font-size: 0.875rem;
}

.footer-disclaimer {
  border-top: 1px solid var(--border);
  padding-top: var(--space-8);
  margin-bottom: var(--space-6);
}

.footer-disclaimer p {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--muted-foreground);
}

.footer-copyright {
  text-align: center;
}

.footer-copyright p {
  font-size: 0.8125rem;
  color: var(--muted-foreground);
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-5);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--primary-foreground);
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-lg), 0 0 15px rgba(99,179,237,0.3);
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-base), transform var(--transition-base), background-color var(--transition-fast);
  pointer-events: none;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  background: var(--neon-blue);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg), var(--glow-blue);
}

/* ============================================
   UTILITY - SECTION BRIDGE
   ============================================ */
.section-bridge {
  margin-top: var(--space-12);
}

/* ============================================
   SCROLL REVEAL (JS driven)
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   COMPARISON TABLE SPECIFICS
   ============================================ */
.comparison-table .data-table {
  min-width: 600px;
}

/* ============================================
   RESPONSIVE MEDIA QUERIES (tablet / desktop)
   ============================================ */
@media (min-width: 768px) {
  .timeline {
    padding-left: var(--space-12);
  }

  .timeline::before {
    left: 18px;
  }

  .timeline-dot {
    left: calc(-1 * var(--space-12) + 10px);
    width: 18px;
    height: 18px;
  }

  .stepper::before {
    left: 24px;
  }
}

@media (min-width: 1024px) {
  .key-concepts-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-title {
    font-size: 3.75rem;
  }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
  .site-header,
  .burger,
  .theme-toggle,
  .back-to-top,
  .section-bridge,
  .bounce-arrow,
  .pulse-cta {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .section {
    padding-block: 2rem;
  }

  a {
    color: black;
    text-decoration: underline;
  }
}

/* ============================================
   ACCESSIBILITY HELPERS
   ============================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}