/* ===========================
   ViewsGrowth - Premium Design System
   Professional & Inviting UI/UX
   =========================== */

/* ===========================
   CSS Variables & Reset
   =========================== */
:root {
  /* Primary Brand Colors */
  --primary: #FF0033;
  --primary-dark: #CC0029;
  --primary-light: #FF3355;
  --primary-glow: rgba(255, 0, 51, 0.08);

  /* Accent Colors */
  --accent: #6C5CE7;
  --accent-dark: #5A4BD1;
  --accent-light: #A29BFE;
  --accent-glow: rgba(108, 92, 231, 0.08);

  /* Secondary Accent */
  --secondary: #00B894;
  --secondary-dark: #009B7D;
  --secondary-light: #55EFC4;

  /* Neutral Colors - warmer undertone */
  --text-primary: #16162A;
  --text-secondary: #494966;
  --text-muted: #7E7E9A;
  --bg-primary: #FFFFFF;
  --bg-secondary: #F8F8FC;
  --bg-tertiary: #EFEFF7;
  --bg-dark: #0C0C1D;
  --bg-dark-secondary: #141430;
  --border: #E4E4F0;
  --border-light: #F2F2FA;

  /* Gradients */
  --gradient-hero: linear-gradient(135deg, #0C0C1D 0%, #161640 40%, #2A1860 70%, #0C0C1D 100%);
  --gradient-primary: linear-gradient(135deg, #FF0033 0%, #6C5CE7 100%);
  --gradient-card: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(248, 248, 252, 0.95));
  --gradient-accent: linear-gradient(135deg, #6C5CE7 0%, #00B894 100%);
  --gradient-warm: linear-gradient(135deg, #FF0033 0%, #FF6B6B 100%);
  --gradient-cta: linear-gradient(135deg, #FF0033 0%, #E6002E 50%, #FF1A44 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.3));
  --gradient-subtle: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);

  /* Spacing */
  --container-max: 1280px;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2.5rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  --spacing-4xl: 8rem;

  /* Typography */
  --font-heading: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 2rem;
  --text-4xl: 2.5rem;
  --text-5xl: 3.5rem;
  --text-6xl: 4.5rem;

  --leading-tight: 1.15;
  --leading-normal: 1.6;
  --leading-relaxed: 1.8;

  /* Shadows - more refined with color tints */
  --shadow-sm: 0 1px 2px rgba(16, 16, 42, 0.04), 0 1px 3px rgba(16, 16, 42, 0.06);
  --shadow-md: 0 4px 12px rgba(16, 16, 42, 0.07), 0 2px 4px rgba(16, 16, 42, 0.04);
  --shadow-lg: 0 12px 32px rgba(16, 16, 42, 0.1), 0 4px 8px rgba(16, 16, 42, 0.05);
  --shadow-xl: 0 24px 48px rgba(16, 16, 42, 0.12), 0 8px 16px rgba(16, 16, 42, 0.06);
  --shadow-glow: 0 0 40px rgba(255, 0, 51, 0.15);
  --shadow-card-hover: 0 20px 40px rgba(16, 16, 42, 0.12), 0 8px 16px rgba(16, 16, 42, 0.06);
  --shadow-primary: 0 8px 24px rgba(255, 0, 51, 0.25);
  --shadow-accent: 0 8px 24px rgba(108, 92, 231, 0.2);

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-full: 9999px;

  /* Transitions - smoother curves */
  --transition-fast: 150ms cubic-bezier(0.2, 0, 0, 1);
  --transition-base: 250ms cubic-bezier(0.2, 0, 0, 1);
  --transition-slow: 400ms cubic-bezier(0.2, 0, 0, 1);
  --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-bounce: 600ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Selection styling */
::selection {
  background: rgba(255, 0, 51, 0.12);
  color: var(--text-primary);
}

::-moz-selection {
  background: rgba(255, 0, 51, 0.12);
  color: var(--text-primary);
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ===========================
   Base Styles
   =========================== */
body {
  font-family: var(--font-body);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background: var(--bg-primary);
  overflow-x: hidden;
  font-feature-settings: 'cv02', 'cv03', 'cv04', 'cv11';
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: var(--leading-tight);
  font-weight: 800;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

h2 {
  font-size: var(--text-3xl);
  margin-bottom: var(--spacing-lg);
}

h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--spacing-md);
  font-weight: 700;
}

p {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  text-wrap: pretty;
}

/* Links */
a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

/* ===========================
   Layout
   =========================== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

main {
  padding: 0;
}

section {
  margin: 0;
}

/* Section spacing utility */
.section-padding {
  padding: var(--spacing-3xl) 0;
}

/* Section headers */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--spacing-2xl);
}

.section-header h2 {
  margin-bottom: var(--spacing-md);
}

.section-header p {
  font-size: var(--text-lg);
  color: var(--text-muted);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary);
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--primary-glow);
  border-radius: var(--radius-full);
}

/* ===========================
   Navigation - Modern Redesign
   =========================== */
nav {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  padding: var(--spacing-md) 0;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(228, 228, 240, 0.6);
  transition: all var(--transition-base);
}

nav.scrolled {
  box-shadow: 0 1px 0 rgba(228, 228, 240, 0.5), var(--shadow-sm);
  padding: 10px 0;
  background: rgba(255, 255, 255, 0.92);
}

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

.nav-brand {
  font-weight: 900;
  font-size: var(--text-xl);
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  letter-spacing: -0.02em;
}

.nav-brand::before {
  content: '';
  display: inline-block;
  width: 32px;
  height: 32px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

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

/* Hamburger Button */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  padding: 0;
  z-index: 110;
  gap: 5px;
  transition: all var(--transition-base);
}

.hamburger:hover {
  background: var(--bg-tertiary);
  border-color: var(--primary);
}

.hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.hamburger:hover span {
  background: var(--primary);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Navigation Menu */
.nav-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 320px;
  height: 100vh;
  background: var(--bg-primary);
  box-shadow: -8px 0 40px rgba(0, 0, 0, 0.15);
  transition: right var(--transition-slow);
  padding: 88px 0 var(--spacing-xl);
  overflow-y: auto;
  z-index: 105;
}

.nav-menu.active {
  right: 0;
}

.nav-menu a {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--text-secondary);
  text-decoration: none;
  padding: 14px var(--spacing-xl);
  font-size: var(--text-sm);
  font-weight: 500;
  border-bottom: 1px solid var(--border-light);
  transition: all var(--transition-fast);
}

.nav-menu a:hover,
.nav-menu a:focus {
  background: var(--primary-glow);
  color: var(--primary);
  padding-left: calc(var(--spacing-xl) + 4px);
}

.nav-menu a.active {
  color: var(--primary);
  font-weight: 700;
  background: var(--primary-glow);
  border-left: 3px solid var(--primary);
}

/* Menu Overlay */
.nav-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(15, 15, 35, 0.6);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-slow);
  z-index: 102;
}

.nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* Menu Sections */
.nav-section {
  padding: var(--spacing-md) var(--spacing-xl) var(--spacing-sm);
  font-size: var(--text-xs);
  font-weight: 800;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  border-bottom: 1px solid var(--border-light);
  background: var(--bg-secondary);
  margin-top: var(--spacing-xs);
}

body.menu-open {
  overflow: hidden;
}

/* ===========================
   Hero Section - Dramatic Redesign
   =========================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  text-align: center;
  position: relative;
  overflow: hidden;
  padding: var(--spacing-3xl) 0;
}

/* Animated background particles */
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(255, 0, 51, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(108, 92, 231, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 60% 80%, rgba(0, 184, 148, 0.06) 0%, transparent 50%);
  animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0% { opacity: 0.7; transform: scale(1); }
  100% { opacity: 1; transform: scale(1.05); }
}

/* Grid pattern overlay */
.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero .container {
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: var(--text-5xl);
  margin-bottom: var(--spacing-lg);
  color: #FFFFFF;
  font-weight: 900;
  letter-spacing: -0.035em;
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.08;
}

.hero h1 .highlight {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

.hero p {
  color: rgba(255, 255, 255, 0.65);
  font-size: var(--text-lg);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
  line-height: var(--leading-relaxed);
  font-weight: 400;
}

/* Trust strip below hero CTA */
.hero-trust {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  flex-wrap: wrap;
}

.hero-trust span {
  color: rgba(255, 255, 255, 0.4);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.01em;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.hero-trust span strong {
  color: rgba(255, 255, 255, 0.7);
  font-weight: 700;
}

.hero img {
  max-width: 100%;
  height: auto;
  margin-top: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  box-shadow: 0 32px 64px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: transform 0.6s ease-out;
}

.hero img:hover {
  transform: translateY(-4px);
}

/* Hero CTA buttons */
.hero-cta {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--spacing-xl);
}

/* ===========================
   Buttons
   =========================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 14px 28px;
  font-size: var(--text-base);
  font-weight: 700;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-base);
  font-family: var(--font-body);
  line-height: 1;
}

.btn-primary {
  background: var(--gradient-cta);
  color: #FFFFFF;
  box-shadow: var(--shadow-primary);
  position: relative;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(255, 0, 51, 0.35);
  filter: brightness(1.05);
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
  box-shadow: 0 4px 12px rgba(255, 0, 51, 0.3);
  transition-duration: 80ms;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(12px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.35);
  transform: translateY(-2px);
}

.btn-secondary:active {
  transform: translateY(0) scale(0.98);
  transition-duration: 80ms;
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
  position: relative;
  overflow: hidden;
}

.btn-outline::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-base);
  z-index: -1;
}

.btn-outline:hover {
  color: #FFFFFF;
  transform: translateY(-2px);
}

.btn-outline:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.btn-outline:active {
  transform: translateY(0) scale(0.98);
  transition-duration: 80ms;
}

.btn-ghost {
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border);
  position: relative;
}

.btn-ghost:hover {
  background: var(--bg-secondary);
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.btn-ghost:active {
  transform: scale(0.97);
  transition-duration: 80ms;
}

/* ===========================
   Stats Section - Animated Counters
   =========================== */
.stats {
  background: var(--gradient-subtle);
  padding: var(--spacing-3xl) 0;
  position: relative;
}

.stats::before {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: var(--gradient-primary);
  opacity: 0.5;
}

.stats .grid {
  justify-items: center;
  text-align: center;
}

.stats .grid > div {
  text-align: center;
  width: 100%;
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.stats .grid > div:hover {
  background: var(--bg-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.stats strong {
  font-size: var(--text-4xl);
  font-weight: 900;
  display: block;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.02em;
}

.stats .grid > div:nth-child(1) strong {
  background: var(--gradient-warm);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stats .grid > div:nth-child(2) strong {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stats .grid > div:nth-child(3) strong {
  background: linear-gradient(135deg, #FF6B6B, #FFD93D);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stats .grid > div:nth-child(4) strong {
  background: linear-gradient(135deg, #00B894, #6C5CE7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stats p {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin: 0;
}

/* ===========================
   Grid System - Enhanced
   =========================== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin: var(--spacing-xl) 0;
}

.grid-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* ===========================
   Cards - Premium Redesign
   =========================== */
.card {
  background: var(--bg-primary);
  padding: var(--spacing-xl) var(--spacing-xl) calc(var(--spacing-xl) + 4px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(228, 228, 240, 0.4);
}

.card:hover::before {
  transform: scaleX(1);
}

.card h3 {
  margin-top: 0;
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--text-primary);
}

.card .card-icon {
  font-size: var(--text-3xl);
  margin-bottom: var(--spacing-md);
  display: block;
}

.card ul {
  list-style: none;
  padding: 0;
  margin: var(--spacing-md) 0;
}

.card ul li {
  padding: var(--spacing-xs) 0;
  color: var(--text-secondary);
  font-size: var(--text-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.card ul li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  flex-shrink: 0;
}

.card a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: auto;
  padding-top: var(--spacing-md);
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
}

.card a:hover {
  gap: 12px;
  color: var(--primary-dark);
  letter-spacing: 0.01em;
}

/* Card color variants */
.card[data-color="red"]::before { background: var(--gradient-warm); }
.card[data-color="purple"]::before { background: linear-gradient(135deg, #6C5CE7, #A29BFE); }
.card[data-color="green"]::before { background: linear-gradient(135deg, #00B894, #55EFC4); }
.card[data-color="blue"]::before { background: linear-gradient(135deg, #0984E3, #74B9FF); }
.card[data-color="orange"]::before { background: linear-gradient(135deg, #E17055, #FFD93D); }
.card[data-color="pink"]::before { background: linear-gradient(135deg, #FD79A8, #E84393); }

/* ===========================
   Quote Section
   =========================== */
.quote {
  padding: var(--spacing-3xl) 0;
  text-align: center;
}

.quote blockquote {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-2xl) var(--spacing-2xl) calc(var(--spacing-2xl) + 4px);
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  border-left: 4px solid var(--primary);
  position: relative;
  box-shadow: var(--shadow-lg);
}

.quote blockquote::before {
  content: '\201C';
  font-size: 8rem;
  font-family: Georgia, 'Times New Roman', serif;
  position: absolute;
  top: -20px;
  left: 24px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  opacity: 0.2;
  pointer-events: none;
}

.quote blockquote p {
  font-size: var(--text-xl);
  font-style: italic;
  font-weight: 500;
  color: var(--text-primary);
  line-height: var(--leading-relaxed);
  position: relative;
  z-index: 1;
}

.quote blockquote cite {
  display: block;
  margin-top: var(--spacing-lg);
  font-size: var(--text-sm);
  color: var(--text-muted);
  font-style: normal;
  font-weight: 600;
}

/* ===========================
   CTA Button (legacy)
   =========================== */
.cta {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--gradient-cta);
  color: #FFFFFF;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-weight: 700;
  text-decoration: none;
  margin-top: var(--spacing-lg);
  transition: all var(--transition-base);
  box-shadow: 0 4px 16px rgba(255, 0, 51, 0.3);
}

.cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 0, 51, 0.4);
}

/* ===========================
   Video Section
   =========================== */
.video-section {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-dark);
  color: #FFFFFF;
  position: relative;
  overflow: hidden;
}

.video-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 10% 20%, rgba(255, 0, 51, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 90% 80%, rgba(108, 92, 231, 0.05) 0%, transparent 50%);
}

.video-section .section-header h2 {
  color: #FFFFFF;
}

.video-section .section-header p {
  color: rgba(255, 255, 255, 0.6);
}

.video-section .section-label {
  background: rgba(255, 0, 51, 0.15);
  color: var(--primary-light);
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
  position: relative;
  z-index: 1;
}

.video-card {
  background: var(--bg-dark-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.06);
  transition: all var(--transition-base);
}

.video-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
  border-color: rgba(255, 0, 51, 0.2);
}

.video-card .video-embed {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  background: #000;
}

.video-card .video-embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Lazy load placeholder */
.video-card .video-embed .video-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  -webkit-tap-highlight-color: transparent;
}

.video-card .video-embed .video-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.15);
  transition: background var(--transition-base);
}

.video-card .video-embed .video-placeholder:hover::before {
  background: rgba(0, 0, 0, 0.3);
}

.video-card .video-embed .video-placeholder::after {
  content: '';
  width: 68px;
  height: 48px;
  background: var(--primary);
  border-radius: var(--radius-md);
  display: block;
  position: relative;
  z-index: 1;
  transition: all var(--transition-base);
  box-shadow: 0 4px 16px rgba(255, 0, 51, 0.4);
  /* Play triangle via clip-path trick - using box with triangle inset */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M8 5v14l11-7z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 28px 28px;
}

.video-card .video-embed .video-placeholder:hover::after {
  background-color: var(--primary-dark);
  transform: scale(1.1);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M8 5v14l11-7z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: 28px 28px;
}

.video-card .video-info {
  padding: var(--spacing-lg);
}

.video-card .video-info h3 {
  color: #FFFFFF;
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  line-height: var(--leading-tight);
}

.video-card .video-info .video-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.5);
}

.video-card .video-info .video-channel {
  color: rgba(255, 255, 255, 0.7);
  font-weight: 600;
}

.video-card .video-tag {
  display: inline-block;
  padding: 2px 10px;
  background: rgba(255, 0, 51, 0.15);
  color: var(--primary-light);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  margin-top: var(--spacing-sm);
}

/* Section CTA (centered bottom link) */
.section-cta {
  text-align: center;
  margin-top: var(--spacing-xl);
  position: relative;
  z-index: 1;
}

/* Glossary section */
.glossary-section {
  background: var(--bg-secondary);
}

.glossary-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)) !important;
  gap: var(--spacing-md) !important;
}

/* ===========================
   Interactive Timeline / Framework
   =========================== */
.framework {
  padding: var(--spacing-3xl) 0 var(--spacing-4xl);
}

.framework ol {
  list-style: none;
  padding: 0;
  position: relative;
  max-width: 800px;
  margin: var(--spacing-xl) auto 0;
}

.framework ol::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.framework li {
  position: relative;
  padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-xl) 72px;
  margin-bottom: var(--spacing-md);
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  cursor: default;
}

.framework li:hover {
  transform: translateX(8px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.framework li::before {
  content: attr(data-step);
  position: absolute;
  left: -1px;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: var(--text-sm);
  color: #FFFFFF;
  z-index: 1;
}

.framework li:nth-child(1)::before {
  background: var(--gradient-warm);
  content: '1';
}

.framework li:nth-child(2)::before {
  background: var(--gradient-accent);
  content: '2';
}

.framework li:nth-child(3)::before {
  background: linear-gradient(135deg, #FFD93D, #E17055);
  content: '3';
}

.framework li:nth-child(4)::before {
  background: linear-gradient(135deg, #00B894, #6C5CE7);
  content: '4';
}

.framework li strong {
  display: block;
  font-size: var(--text-lg);
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
}

/* Inline links in framework/content */
.inline-link {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: all var(--transition-fast);
}

.inline-link:hover {
  text-decoration-thickness: 2px;
}

.inline-link--primary { color: var(--primary); }
.inline-link--primary:hover { color: var(--primary-dark); }
.inline-link--accent { color: var(--accent); }
.inline-link--accent:hover { color: var(--accent-dark); }
.inline-link--orange { color: #E17055; }
.inline-link--orange:hover { color: #D35A3F; }
.inline-link--green { color: var(--secondary); }
.inline-link--green:hover { color: var(--secondary-dark); }

/* Step links in framework */
.step-link {
  font-weight: 700;
  font-size: var(--text-sm);
  display: block;
  margin-top: var(--spacing-sm);
  transition: all var(--transition-fast);
}

.step-link:hover {
  letter-spacing: 0.02em;
}

.step-link--primary { color: var(--primary); }
.step-link--accent { color: var(--accent); }
.step-link--orange { color: #E17055; }
.step-link--green { color: var(--secondary); }

/* ===========================
   Tools Showcase
   =========================== */
.tools-showcase {
  padding: var(--spacing-3xl) 0 var(--spacing-4xl);
  background: var(--bg-secondary);
  position: relative;
}

.tools-showcase::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(108, 92, 231, 0.03) 0%, transparent 60%);
  pointer-events: none;
}

.tool-card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  border: 1px solid var(--border);
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.tool-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(255, 0, 51, 0.03) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.tool-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(228, 228, 240, 0.4);
}

.tool-card:hover::after {
  opacity: 1;
}

.tool-card .tool-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-lg);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  transition: transform var(--transition-spring);
}

.tool-card:hover .tool-icon {
  transform: scale(1.1);
}

.tool-card:nth-child(1) .tool-icon { background: rgba(255, 0, 51, 0.1); }
.tool-card:nth-child(2) .tool-icon { background: rgba(108, 92, 231, 0.1); }
.tool-card:nth-child(3) .tool-icon { background: rgba(0, 184, 148, 0.1); }
.tool-card:nth-child(4) .tool-icon { background: rgba(225, 112, 85, 0.1); }

.tool-card h3 {
  font-size: var(--text-base);
  font-weight: 700;
}

.tool-card p {
  font-size: var(--text-sm);
  margin-bottom: var(--spacing-lg);
}

.tool-card a {
  color: var(--primary);
  font-weight: 700;
  font-size: var(--text-sm);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  transition: all var(--transition-fast);
}

.tool-card a:hover {
  gap: var(--spacing-sm);
}

/* ===========================
   AI Section
   =========================== */
.ai-section {
  padding: var(--spacing-4xl) 0 var(--spacing-3xl);
  position: relative;
}

.ai-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(108, 92, 231, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.ai-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

.ai-card {
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  background: var(--bg-primary);
  border: 1px solid var(--border);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.ai-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.ai-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.ai-card:hover::after {
  opacity: 1;
}

.ai-card h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-sm);
}

.ai-card p {
  font-size: var(--text-sm);
}

.ai-card-link {
  color: var(--accent);
  font-weight: 700;
  font-size: var(--text-sm);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-md);
  transition: all var(--transition-fast);
}

.ai-card-link:hover {
  gap: var(--spacing-sm);
  color: var(--accent-dark);
}

/* ===========================
   Newsletter/CTA Section
   =========================== */
.newsletter-section {
  padding: var(--spacing-3xl) 0;
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.newsletter-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 30% 40%, rgba(255, 0, 51, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 70% 60%, rgba(108, 92, 231, 0.08) 0%, transparent 50%);
}

.newsletter-section .container {
  position: relative;
  z-index: 1;
}

.newsletter-section h2 {
  color: #FFFFFF;
  font-size: var(--text-3xl);
}

.newsletter-section p {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--text-lg);
  max-width: 560px;
  margin: 0 auto var(--spacing-xl);
}

.newsletter-cta {
  margin-top: 0;
}

/* ===========================
   Feature Badges
   =========================== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-new {
  background: rgba(0, 184, 148, 0.1);
  color: var(--secondary);
  animation: badgePulse 3s ease-in-out infinite;
}

@keyframes badgePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 184, 148, 0); }
  50% { box-shadow: 0 0 0 4px rgba(0, 184, 148, 0.08); }
}

.badge-popular {
  background: rgba(255, 0, 51, 0.1);
  color: var(--primary);
}

.badge-free {
  background: rgba(108, 92, 231, 0.1);
  color: var(--accent);
}

/* ===========================
   Footer - Comprehensive Redesign
   =========================== */
/* Scroll progress indicator */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--gradient-primary);
  z-index: 200;
  transition: none;
  transform-origin: left;
  will-change: transform;
}

/* Testimonial / Social Proof */
.testimonial-section {
  padding: var(--spacing-4xl) 0 var(--spacing-3xl);
  background: var(--bg-primary);
  position: relative;
}

.testimonial-section::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--gradient-primary);
  opacity: 0.15;
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.testimonial-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  border: 1px solid var(--border-light);
  position: relative;
  transition: all var(--transition-base);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.testimonial-card .stars {
  color: #FFB800;
  font-size: var(--text-lg);
  margin-bottom: var(--spacing-md);
  letter-spacing: 2px;
}

.testimonial-card p {
  font-style: italic;
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--spacing-lg);
}

.testimonial-card .author {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.testimonial-card .author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-weight: 800;
  font-size: var(--text-sm);
  flex-shrink: 0;
}

.testimonial-card .author-info strong {
  display: block;
  font-size: var(--text-sm);
  color: var(--text-primary);
}

.testimonial-card .author-info span {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 0;
  margin-top: 0;
}

.footer-main {
  padding: var(--spacing-3xl) 0 var(--spacing-2xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-2xl);
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.5);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  margin-top: var(--spacing-md);
  max-width: 280px;
}

.footer-brand .nav-brand {
  color: #FFFFFF;
}

.footer-section h4 {
  color: #FFFFFF;
  font-size: var(--text-sm);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--spacing-lg);
}

.footer-section ul {
  list-style: none;
  padding: 0;
}

.footer-section ul li {
  margin-bottom: var(--spacing-sm);
}

.footer-section ul li a {
  color: rgba(255, 255, 255, 0.5);
  font-size: var(--text-sm);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.footer-section ul li a:hover {
  color: #FFFFFF;
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: var(--spacing-lg) 0;
}

.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.4);
  font-size: var(--text-sm);
  margin: 0;
}

.footer-bottom a {
  color: var(--primary-light);
  text-decoration: none;
}

.footer-bottom a:hover {
  text-decoration: underline;
}

/* ===========================
   Scroll Animations
   =========================== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.scale-in {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scale-in.visible {
  opacity: 1;
  transform: scale(1);
}

/* Stagger children animation */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s ease-out, transform 0.4s ease-out;
}

.stagger-children.visible > *:nth-child(1) { transition-delay: 0ms; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(2) { transition-delay: 80ms; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(3) { transition-delay: 160ms; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(4) { transition-delay: 240ms; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(5) { transition-delay: 320ms; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(6) { transition-delay: 400ms; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(7) { transition-delay: 480ms; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(8) { transition-delay: 560ms; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(9) { transition-delay: 640ms; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(10) { transition-delay: 720ms; opacity: 1; transform: translateY(0); }
.stagger-children.visible > *:nth-child(n+11) { transition-delay: 800ms; opacity: 1; transform: translateY(0); }

/* ===========================
   Floating Particles (for hero)
   =========================== */
.particles {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  overflow: hidden;
}

.particle {
  position: absolute;
  border-radius: 50%;
  opacity: 0.15;
  animation: float linear infinite;
}

@keyframes float {
  0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
  10% { opacity: 0.15; }
  90% { opacity: 0.15; }
  100% { transform: translateY(-100px) rotate(720deg); opacity: 0; }
}

/* ===========================
   Interactive Quiz Teaser
   =========================== */
.quiz-teaser {
  padding: var(--spacing-3xl) 0;
  background: var(--bg-secondary);
}

.quiz-box {
  max-width: 720px;
  margin: 0 auto;
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  border: 1px solid var(--border);
  text-align: center;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.quiz-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
}

.quiz-box h3 {
  font-size: var(--text-2xl);
}

.quiz-box p {
  margin-bottom: var(--spacing-xl);
}

.quiz-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.quiz-option {
  padding: var(--spacing-lg);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  background: var(--bg-primary);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
  text-align: center;
  position: relative;
}

.quiz-option:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-glow);
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(255, 0, 51, 0.1);
}

.quiz-option:active {
  transform: translateY(0) scale(0.97);
  transition-duration: 80ms;
}

.quiz-option.selected {
  border-color: var(--primary);
  background: var(--primary-glow);
  color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 0, 51, 0.08);
}

.quiz-result {
  display: none;
  margin-top: var(--spacing-lg);
  animation: fadeInUp 0.4s ease-out;
}

.quiz-recommendation {
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

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

/* ===========================
   Breadcrumbs - Enhanced
   =========================== */
.breadcrumb {
  padding: var(--spacing-md) 0;
  font-size: var(--text-sm);
}

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

.breadcrumb li {
  display: inline;
}

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

.breadcrumb a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}

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

/* ===========================
   Table of Contents - Enhanced
   =========================== */
.toc {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin: var(--spacing-xl) 0;
}

.toc h2 {
  margin-top: 0;
  font-size: var(--text-lg);
}

.toc ol {
  margin: 0;
  padding-left: var(--spacing-lg);
}

.toc li {
  margin: var(--spacing-sm) 0;
}

.toc a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}

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

/* ===========================
   Back to Top Button
   =========================== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--gradient-cta);
  color: #FFFFFF;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 4px 16px rgba(255, 0, 51, 0.3);
  transition: all var(--transition-base);
  z-index: 99;
  text-decoration: none;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
}

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

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(255, 0, 51, 0.4);
}

/* ===========================
   Responsive Tables
   =========================== */
table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-xl) 0;
  overflow-x: auto;
  display: block;
  border-radius: var(--radius-md);
}

thead { display: table-header-group; }
tbody { display: table-row-group; }

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

th {
  background: var(--bg-secondary);
  font-weight: 700;
  font-size: var(--text-sm);
  color: var(--text-primary);
}

td {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* ===========================
   Skip Link
   =========================== */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary);
  color: #FFFFFF;
  padding: 8px 16px;
  text-decoration: none;
  z-index: 1000;
  border-radius: 0 0 var(--radius-sm) 0;
  font-weight: 600;
}

.skip-link:focus {
  top: 0;
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 768px) {
  :root {
    --text-5xl: 2.25rem;
    --text-4xl: 1.75rem;
    --text-3xl: 1.5rem;
    --text-2xl: 1.25rem;
    --spacing-3xl: 3rem;
    --spacing-2xl: 2rem;
  }

  .grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .nav-menu {
    width: 280px;
  }

  .hero {
    min-height: auto;
    padding: var(--spacing-2xl) 0 var(--spacing-3xl);
  }

  .hero h1 {
    font-size: var(--text-3xl);
  }

  .hero-cta {
    flex-direction: column;
    align-items: center;
  }

  .hero-trust {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .video-grid {
    grid-template-columns: 1fr;
  }

  .quiz-options {
    grid-template-columns: 1fr;
  }

  .testimonial-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

  .footer-bottom .container {
    flex-direction: column;
    text-align: center;
  }

  .framework li {
    padding-left: 56px;
  }

  .framework ol::before {
    left: 16px;
  }

  table {
    font-size: var(--text-sm);
  }

  th, td {
    padding: var(--spacing-sm);
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  :root {
    --text-5xl: 1.75rem;
    --text-4xl: 1.5rem;
    --text-3xl: 1.3rem;
  }

  .container {
    padding: 0 16px;
  }

  .card {
    padding: var(--spacing-lg);
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
  }

  .stats strong {
    font-size: var(--text-2xl);
  }
}

/* Tablet */
@media (min-width: 769px) and (max-width: 1024px) {
  .grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
  }

  .video-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Large Desktop */
@media (min-width: 1440px) {
  :root {
    --container-max: 1400px;
    --text-5xl: 4rem;
  }
}

/* ===========================
   Print Styles
   =========================== */
@media print {
  nav,
  footer,
  .back-to-top,
  .skip-link,
  .particles,
  .video-section,
  .newsletter-section {
    display: none;
  }

  .hero {
    min-height: auto;
    background: none;
    color: var(--text-primary);
    padding: var(--spacing-lg) 0;
  }

  .hero h1,
  .hero p {
    color: var(--text-primary);
  }

  .breadcrumb {
    border-bottom: 1px solid var(--border);
  }

  .card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
  }
}

/* ===========================
   Accessibility: Reduced Motion
   =========================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .fade-in,
  .fade-in-left,
  .fade-in-right,
  .scale-in {
    opacity: 1;
    transform: none;
  }

  .stagger-children > * {
    opacity: 1;
    transform: none;
  }
}

/* ===========================
   Mobile Touch & UX Enhancements
   =========================== */

/* Tap highlight removal for interactive elements */
a, button, [role="button"], .quiz-option, .video-placeholder {
  -webkit-tap-highlight-color: transparent;
}

/* Ensure all interactive elements meet 44px touch target */
button, .btn, .cta, .cta-button, [role="button"] {
  min-height: 44px;
}

/* Touch-action optimization for buttons */
.btn, .cta, .cta-button, .quiz-option, .hamburger, .back-to-top {
  touch-action: manipulation;
}

/* Safe area support for notched devices */
@supports (padding: env(safe-area-inset-bottom)) {
  .container {
    padding-left: max(24px, env(safe-area-inset-left));
    padding-right: max(24px, env(safe-area-inset-right));
  }

  footer .footer-bottom {
    padding-bottom: max(var(--spacing-lg), env(safe-area-inset-bottom));
  }

  .back-to-top {
    bottom: max(30px, calc(env(safe-area-inset-bottom) + 10px));
  }
}

/* ===========================
   Inner Pages - Legacy Class Compatibility
   =========================== */

/* CTA Button (used on inner pages) */
.cta-button {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--gradient-cta);
  color: #FFFFFF;
  padding: 14px 28px;
  border-radius: var(--radius-md);
  font-weight: 700;
  text-decoration: none;
  transition: all var(--transition-base);
  box-shadow: 0 4px 16px rgba(255, 0, 51, 0.3);
  min-height: 44px;
  touch-action: manipulation;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 0, 51, 0.4);
  color: #FFFFFF;
}

/* CTA Section (used on inner pages for bottom CTA) */
.cta-section {
  text-align: center;
  padding: var(--spacing-3xl) var(--spacing-xl);
  margin: var(--spacing-3xl) calc(-1 * var(--spacing-xl));
  background: var(--bg-secondary);
  border-radius: var(--radius-xl);
}

.cta-section h2 {
  margin-bottom: var(--spacing-md);
}

.cta-section p {
  margin-bottom: var(--spacing-xl);
  font-size: var(--text-lg);
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* Highlight box (used on algorithm, getting-started, monetization pages) */
p.highlight,
.highlight:not(span):not(h1 .highlight) {
  background: var(--primary-glow);
  border-left: 4px solid var(--primary);
  padding: var(--spacing-lg);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: var(--spacing-lg) 0;
  font-weight: 500;
  color: var(--text-primary);
}

/* Equipment grid (getting-started) */
.equipment-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
  margin: var(--spacing-xl) 0;
}

/* Budget tier cards */
.budget-tier {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  border-top: 3px solid var(--primary);
  transition: all var(--transition-base);
}

.budget-tier:nth-child(2) {
  border-top-color: var(--accent);
}

.budget-tier:nth-child(3) {
  border-top-color: var(--secondary);
}

.budget-tier:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.budget-tier h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--spacing-md);
}

.budget-tier ul {
  list-style: none;
  padding: 0;
}

.budget-tier ul li {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.budget-tier ul li:last-child {
  border-bottom: none;
}

.budget-tier .result {
  margin-top: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(0, 184, 148, 0.08);
  border-radius: var(--radius-sm);
  color: var(--secondary-dark);
  font-weight: 600;
  font-size: var(--text-sm);
}

/* Timeline (getting-started, production) */
.timeline,
.growth-timeline {
  margin: var(--spacing-xl) 0;
}

.timeline h3,
.growth-timeline h3 {
  color: var(--text-primary);
  margin-top: var(--spacing-xl);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--border);
}

.timeline h3:first-child,
.growth-timeline h3:first-child {
  margin-top: 0;
}

/* Checklist (getting-started) */
.checklist {
  margin: var(--spacing-xl) 0;
}

.checklist h3 {
  color: var(--text-primary);
  margin-top: var(--spacing-xl);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--accent);
}

.checklist h3:first-child {
  margin-top: 0;
}

.checklist ul {
  padding-left: var(--spacing-lg);
}

.checklist ul li {
  padding: var(--spacing-xs) 0;
  color: var(--text-secondary);
}

/* Quick wins (getting-started) */
.quick-wins {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

.quick-wins > div {
  background: var(--bg-secondary);
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--primary);
}

.quick-wins > div:nth-child(2) { border-left-color: var(--accent); }
.quick-wins > div:nth-child(3) { border-left-color: var(--secondary); }
.quick-wins > div:nth-child(4) { border-left-color: #E17055; }
.quick-wins > div:nth-child(5) { border-left-color: #FFD93D; }

/* Ranking grid (algorithm, monetization) */
.ranking-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

.factor {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--spacing-lg);
  transition: all var(--transition-base);
}

.factor:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* Formula box (algorithm, monetization) */
.formula-box {
  background: var(--bg-dark);
  color: #FFFFFF;
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  margin: var(--spacing-xl) 0;
  text-align: center;
  font-family: var(--font-mono);
}

/* Shorts grid (algorithm) */
.shorts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

/* Metrics hierarchy (analytics) */
.metrics-hierarchy {
  margin: var(--spacing-xl) 0;
}

.metric-tier {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-lg);
}

/* AI tools cards */
.ai-tool {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
}

.ai-tool:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.ai-tools-grid,
.generation-tools,
.automation-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

/* Feature cards (ai-tools) */
.feature-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* Case studies */
.case-study {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  border: 1px solid var(--border);
}

.case-study.featured {
  border-left: 4px solid var(--primary);
}

.case-study.warning {
  border-left: 4px solid #E17055;
}

.niche-grid,
.patterns-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

/* Resource cards */
.resource-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  border-top: 3px solid var(--primary);
  transition: all var(--transition-base);
}

.resource-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.resource-card.featured {
  border-top-color: var(--accent);
}

.resources-grid,
.design-grid,
.bonus-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
}

/* Download buttons (resources) */
.download-button,
.download-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 10px 20px;
  background: var(--bg-secondary);
  color: var(--primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--text-sm);
  text-decoration: none;
  transition: all var(--transition-base);
  min-height: 44px;
  touch-action: manipulation;
}

.download-button:hover,
.download-link:hover {
  background: var(--primary-glow);
  border-color: var(--primary);
}

/* Button group (tools) */
.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin: var(--spacing-lg) 0;
}

/* Recommendation box, related guides (tools) */
.recommendation-box {
  background: var(--primary-glow);
  border: 1px solid rgba(255, 0, 51, 0.15);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin: var(--spacing-lg) 0;
}

.related-guides {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin: var(--spacing-lg) 0;
}

/* Total box (tools) */
.total-box {
  background: var(--bg-dark);
  color: #FFFFFF;
  padding: var(--spacing-lg);
  border-radius: var(--radius-md);
  margin: var(--spacing-lg) 0;
  text-align: center;
  font-size: var(--text-xl);
  font-weight: 800;
}

/* Avoid list (analytics) */
.avoid-list {
  margin: var(--spacing-lg) 0;
}

.avoid-list li {
  padding: var(--spacing-sm) 0;
  color: var(--text-secondary);
}

/* Community section (resources) */
.community-section {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin: var(--spacing-xl) 0;
}

.community-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-md);
}

/* Prompt category (ai-tools) */
.prompt-category code {
  background: var(--bg-secondary);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  word-break: break-word;
}

/* SEO section (monetization) */
.seo-section {
  margin: var(--spacing-xl) 0;
}

/* Tracking table (analytics) */
.tracking-table {
  width: 100%;
}

/* Benchmarks table */
.benchmarks-table {
  width: 100%;
}

/* Timeline block (production) */
.timeline-block {
  background: var(--bg-secondary);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  margin: var(--spacing-lg) 0;
  border-left: 3px solid var(--accent);
}

/* ===========================
   Inner Page Content Styles
   =========================== */

/* Inner page main content spacing */
main.container {
  padding-top: var(--spacing-xl);
  padding-bottom: var(--spacing-3xl);
}

main.container h1 {
  font-size: var(--text-4xl);
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

main.container h2 {
  margin-top: var(--spacing-2xl);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--border-light);
}

main.container section {
  margin-bottom: var(--spacing-2xl);
}

main.container blockquote {
  border-left: 4px solid var(--primary);
  padding: var(--spacing-lg) var(--spacing-xl);
  margin: var(--spacing-lg) 0;
  background: var(--bg-secondary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
}

main.container blockquote p {
  color: var(--text-primary);
  font-size: var(--text-lg);
}

main.container ul, main.container ol {
  padding-left: var(--spacing-xl);
  margin: var(--spacing-md) 0;
}

main.container li {
  padding: var(--spacing-xs) 0;
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

main.container li strong {
  color: var(--text-primary);
}

/* ===========================
   Mobile Responsive - Inner Pages
   =========================== */
@media (max-width: 768px) {
  main.container h1 {
    font-size: var(--text-2xl);
  }

  .equipment-grid,
  .ranking-grid,
  .ai-tools-grid,
  .generation-tools,
  .automation-grid,
  .niche-grid,
  .patterns-grid,
  .resources-grid,
  .design-grid,
  .bonus-grid,
  .shorts-grid,
  .community-links {
    grid-template-columns: 1fr;
  }

  .cta-section {
    margin: var(--spacing-xl) calc(-1 * var(--spacing-md));
    padding: var(--spacing-2xl) var(--spacing-md);
  }

  .budget-tier {
    padding: var(--spacing-lg);
  }

  .button-group {
    flex-direction: column;
  }

  .button-group > * {
    width: 100%;
    text-align: center;
    justify-content: center;
  }

  /* Table mobile scroll wrapper */
  .table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin: var(--spacing-lg) calc(-1 * 16px);
    padding: 0 16px;
  }

  .table-responsive table {
    min-width: 500px;
  }

  /* Better video grid on mobile */
  .video-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  /* Ensure quiz options stack */
  .quiz-options {
    grid-template-columns: 1fr;
  }

  /* Better card spacing on mobile */
  .case-study {
    padding: var(--spacing-lg);
  }

  .metric-tier {
    padding: var(--spacing-lg);
  }
}

/* Small mobile refinements */
@media (max-width: 480px) {
  main.container h1 {
    font-size: var(--text-xl);
  }

  .budget-tier h3 {
    font-size: var(--text-base);
  }

  .cta-button {
    padding: 12px 20px;
    font-size: var(--text-sm);
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  .formula-box {
    padding: var(--spacing-lg);
    font-size: var(--text-sm);
  }

  /* Ensure nav-menu doesn't overflow */
  .nav-menu {
    width: 100%;
    max-width: 280px;
  }
}

/* Tablet - Inner pages */
@media (min-width: 769px) and (max-width: 1024px) {
  .equipment-grid,
  .ranking-grid,
  .resources-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .ai-tools-grid,
  .niche-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}