/**
 * VBPi AI Website Styles
 * Enterprise-grade design with dark/light mode support
 * Fully responsive and accessible
 */

/* ==========================================================================
   CSS VARIABLES & DESIGN TOKENS
   ========================================================================== */

:root {
  /* Colors - Dark Mode (Default) */
  --color-bg-primary: #0a0a0a;
  --color-bg-secondary: #121212;
  --color-bg-tertiary: #1a1a1a;
  --color-bg-elevated: #242424;
  
  --color-text-primary: #ffffff;
  --color-text-secondary: #b3b3b3;
  --color-text-tertiary: #808080;
  
  --color-brand-primary: #3b82f6;
  --color-brand-secondary: #8b5cf6;
  --color-brand-tertiary: #10b981;
  
  --color-accent-blue: #60a5fa;
  --color-accent-purple: #a78bfa;
  --color-accent-green: #34d399;
  --color-accent-yellow: #fbbf24;
  --color-accent-red: #f87171;
  
  --color-border-subtle: #2a2a2a;
  --color-border-default: #404040;
  --color-border-strong: #606060;
  
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: #3b82f6;
  
  /* Gradients */
  --gradient-brand: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --gradient-accent: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
  --gradient-hero: radial-gradient(ellipse at top, rgba(59, 130, 246, 0.15) 0%, transparent 50%);
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  
  --font-size-xs: 0.75rem;      /* 12px */
  --font-size-sm: 0.875rem;     /* 14px */
  --font-size-base: 1rem;       /* 16px */
  --font-size-lg: 1.125rem;     /* 18px */
  --font-size-xl: 1.25rem;      /* 20px */
  --font-size-2xl: 1.5rem;      /* 24px */
  --font-size-3xl: 1.875rem;    /* 30px */
  --font-size-4xl: 2.25rem;     /* 36px */
  --font-size-5xl: 3rem;        /* 48px */
  --font-size-6xl: 3.75rem;     /* 60px */
  --font-size-7xl: 4.5rem;      /* 72px */
  
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  --font-weight-black: 900;
  
  --line-height-tight: 1.25;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;
  
  /* Spacing */
  --spacing-xs: 0.25rem;    /* 4px */
  --spacing-sm: 0.5rem;     /* 8px */
  --spacing-md: 1rem;       /* 16px */
  --spacing-lg: 1.5rem;     /* 24px */
  --spacing-xl: 2rem;       /* 32px */
  --spacing-2xl: 3rem;      /* 48px */
  --spacing-3xl: 4rem;      /* 64px */
  --spacing-4xl: 6rem;      /* 96px */
  --spacing-5xl: 8rem;      /* 128px */
  
  /* Layout */
  --container-width: 1280px;
  --container-padding: var(--spacing-xl);
  
  /* Border Radius */
  --radius-sm: 0.375rem;    /* 6px */
  --radius-md: 0.5rem;      /* 8px */
  --radius-lg: 0.75rem;     /* 12px */
  --radius-xl: 1rem;        /* 16px */
  --radius-2xl: 1.5rem;     /* 24px */
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.3);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* Light Mode Variables */
body.light-mode {
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f9fafb;
  --color-bg-tertiary: #f3f4f6;
  --color-bg-elevated: #ffffff;
  
  --color-text-primary: #111827;
  --color-text-secondary: #4b5563;
  --color-text-tertiary: #9ca3af;
  
  --color-border-subtle: #e5e7eb;
  --color-border-default: #d1d5db;
  --color-border-strong: #9ca3af;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.2);
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  transition: background-color var(--transition-base), color var(--transition-base);
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-3xl); }
h4 { font-size: var(--font-size-2xl); }
h5 { font-size: var(--font-size-xl); }
h6 { font-size: var(--font-size-lg); }

p {
  margin-bottom: var(--spacing-md);
}

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

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

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background-color: var(--color-bg-tertiary);
  padding: 0.125rem 0.375rem;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   LAYOUT
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* ==========================================================================
   NAVIGATION
   ========================================================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background-color: rgba(10, 10, 10, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-subtle);
  transition: all var(--transition-base);
}

body.light-mode .navbar {
  background-color: rgba(255, 255, 255, 0.8);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.logo-img {
  height: 32px;
  width: auto;
}

/* Logo switching for dark/light mode */
.logo-dark {
  display: block;
}

.logo-light {
  display: none;
}

.light-mode .logo-dark {
  display: none;
}

.light-mode .logo-light {
  display: block;
}

/* Logo text */
.logo-text {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--color-text-primary);
  line-height: 1;
  user-select: none;
}

/* Logo text color switching for dark/light mode */
.dark-mode .logo-text {
  color: #ffffff;
}

.light-mode .logo-text {
  color: #000000;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  flex-wrap: nowrap;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-sm);
  flex-wrap: nowrap;
  white-space: nowrap;
}

.nav-link {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-sm);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  flex-wrap: nowrap;
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border-default);
  background-color: var(--color-bg-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  padding: 0;
}

.theme-toggle:hover {
  background-color: var(--color-bg-tertiary);
}

.theme-toggle .theme-icon::before {
  content: '🌙';
  font-size: 20px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

body.light-mode .theme-toggle .theme-icon::before {
  content: '☀️';
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: all var(--transition-base);
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-family: var(--font-sans);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  text-align: center;
  white-space: nowrap;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  padding: 0.625rem 1.25rem;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #ffffff;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.btn-secondary {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-default);
}

.btn-secondary:hover {
  background-color: var(--color-bg-elevated);
  border-color: var(--color-border-strong);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-default);
}

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

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-base);
}

.btn-block {
  width: 100%;
}

.btn-icon {
  width: 20px;
  height: 20px;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero {
  position: relative;
  min-height: 100vh;
  padding-top: 120px;
  padding-bottom: var(--spacing-5xl);
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
}

.gradient-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100%;
  background: var(--gradient-hero);
}

.grid-pattern {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(var(--color-border-subtle) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border-subtle) 1px, transparent 1px);
  background-size: 50px 50px;
  opacity: 0.3;
}

.hero-container {
  position: relative;
  z-index: 1;
  max-width: 1100px;
  margin: 0 auto;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-xl);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-accent-blue);
  margin-bottom: var(--spacing-2xl);
}

.hero-title {
  font-size: var(--font-size-6xl);
  font-weight: var(--font-weight-extrabold);
  line-height: 1.1;
  margin-bottom: var(--spacing-xl);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-3xl);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.stat {
  text-align: center;
  padding: var(--spacing-xl);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.stat:hover {
  border-color: var(--color-brand-primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.stat-value {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-extrabold);
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-sm);
  white-space: nowrap;
  line-height: 1.2;
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.hero-cta {
  display: flex;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-3xl);
  justify-content: center;
  flex-wrap: wrap;
}

.hero-trust {
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-border-subtle);
}

.trust-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-bottom: var(--spacing-md);
  text-align: center;
}

.trust-logos {
  display: flex;
  gap: var(--spacing-xl);
  flex-wrap: wrap;
}

.trust-logo {
  padding: var(--spacing-md) var(--spacing-lg);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.hero-video-container {
  position: relative;
  background: rgba(17, 24, 39, 0.6);
  border: 5px solid var(--color-border-default);
  border-radius: var(--radius-2xl);
  padding: 50px;
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.5);
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
}

.hero-video-wrapper {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: linear-gradient(180deg, rgba(17, 24, 39, 1) 0%, rgba(31, 41, 55, 1) 100%);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  width: 100%;
  aspect-ratio: 2546 / 1300;
  isolation: isolate;
}

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.hero-video-overlay {
  position: absolute;
  bottom: 12px;
  left: 12px;
  right: 12px;
  padding: var(--spacing-md) var(--spacing-md) var(--spacing-sm);
  background: linear-gradient(to top, rgba(0, 0, 0, 0.95) 0%, rgba(0, 0, 0, 0.7) 50%, transparent 100%);
  pointer-events: none;
  max-height: 30%;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: flex-end;
}

.hero-chat-demo {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
  justify-content: flex-end;
}

.hero-chat-message {
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: var(--font-weight-semibold);
  max-width: 60%;
  animation: slideUp 0.6s ease-out;
  backdrop-filter: blur(12px);
  word-wrap: break-word;
  line-height: 1.2;
}

.user-message {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.4) 0%, rgba(139, 92, 246, 0.4) 100%);
  border: 2px solid rgba(59, 130, 246, 0.8);
  color: #fff;
  align-self: flex-start;
  border-radius: var(--radius-lg) var(--radius-lg) var(--radius-lg) 4px;
  box-shadow: 0 2px 12px rgba(59, 130, 246, 0.5);
}

.ai-message {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.4) 0%, rgba(59, 130, 246, 0.4) 100%);
  border: 2px solid rgba(16, 185, 129, 0.8);
  color: #fff;
  align-self: flex-end;
  border-radius: var(--radius-lg) var(--radius-lg) 4px var(--radius-lg);
  animation-delay: 0.3s;
  box-shadow: 0 2px 12px rgba(16, 185, 129, 0.5);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================================================
   TRUST STATS (Hero Section)
   ========================================================================== */

.trust-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  max-width: 900px;
  margin: 0 auto;
}

.trust-stat {
  text-align: center;
  padding: var(--spacing-lg);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.trust-stat:hover {
  border-color: var(--color-brand-primary);
  transform: translateY(-2px);
}

.trust-icon {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-sm);
}

.trust-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  line-height: 1.4;
  font-weight: var(--font-weight-medium);
}

/* ==========================================================================
   PROBLEM/SOLUTION SECTION
   ========================================================================== */

.problem-solution {
  background-color: var(--color-bg-secondary);
}

.problem-content {
  display: grid;
  grid-template-columns: 500px 1fr;
  gap: var(--spacing-4xl);
  align-items: start;
  max-width: 1600px;
  margin: 0 auto;
}

.comparison-grid {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.comparison-card {
  background-color: var(--color-bg-primary);
  border: 2px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  transition: all var(--transition-base);
}

.comparison-card:hover {
  border-color: var(--color-brand-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.comparison-card.after {
  border-color: rgba(16, 185, 129, 0.3);
}

.comparison-card.after:hover {
  border-color: rgba(16, 185, 129, 0.6);
}

.comparison-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 2px solid var(--color-border-subtle);
}

.comparison-icon {
  font-size: var(--font-size-3xl);
}

.comparison-header h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 0;
}

.comparison-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.comparison-list li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: 1.6;
  padding-left: var(--spacing-lg);
  position: relative;
}

.comparison-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--color-brand-primary);
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
}

.comparison-list li strong {
  color: var(--color-text-primary);
}

/* Problem Visual Video */
.problem-visual {
  position: sticky;
  top: 120px;
}

.problem-video-wrapper {
  background: rgba(17, 24, 39, 0.6);
  border: 5px solid var(--color-border-subtle);
  border-radius: var(--radius-2xl);
  padding: 50px;
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.5);
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
}

.problem-video-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg) var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08) 0%, rgba(139, 92, 246, 0.08) 100%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-default);
}

.problem-video-container {
  position: relative;
  background: linear-gradient(180deg, rgba(17, 24, 39, 1) 0%, rgba(31, 41, 55, 1) 100%);
  border: 2px solid var(--color-border-default);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  width: 100%;
  aspect-ratio: 2546 / 1300;
  margin: 0 auto;
  min-height: 450px;
  max-height: 500px;
}

.problem-video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  transform: scale(1.2);
  transform-origin: center center;
}

.problem-video-note {
  margin-top: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-subtle);
}

/* ==========================================================================
   HOW IT WORKS SECTION
   ========================================================================== */

.how-it-works {
  background-color: var(--color-bg-primary);
}

.workflow-container {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: var(--spacing-4xl);
  align-items: start;
  max-width: 1600px;
  margin: 0 auto;
}

.workflow-steps {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
}

.workflow-step {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.workflow-step:hover {
  border-color: var(--color-brand-primary);
  transform: translateX(4px);
  box-shadow: 0 4px 16px rgba(59, 130, 246, 0.15);
}

.step-number {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-brand);
  color: #ffffff;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-extrabold);
  border-radius: var(--radius-xl);
}

.step-content {
  flex: 1;
}

.step-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-primary);
}

.step-description {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-md);
  font-style: italic;
}

.step-features {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.feature-pill {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-accent-blue);
}

/* Demo Visual */
.workflow-visual {
  position: sticky;
  top: 120px;
}

/* Video Wrapper */
.video-wrapper {
  background: rgba(17, 24, 39, 0.6);
  border: 5px solid var(--color-border-subtle);
  border-radius: var(--radius-2xl);
  padding: 50px;
  box-shadow: 0 30px 100px rgba(0, 0, 0, 0.5);
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
}

.video-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.08) 0%, rgba(139, 92, 246, 0.08) 100%);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-default);
  gap: var(--spacing-md);
}

.video-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  color: #ef4444;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  animation: pulse 2s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.video-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Video Container */
.demo-video-container {
  position: relative;
  background: linear-gradient(180deg, rgba(17, 24, 39, 1) 0%, rgba(31, 41, 55, 1) 100%);
  border: 2px solid var(--color-border-default);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  width: 100%;
  aspect-ratio: 2546 / 1300;
  margin: 0 auto;
  min-height: 550px;
}

.demo-video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  transform: scale(1.0);
  transform-origin: center center;
}

.video-overlay {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 10;
  max-width: calc(100% - var(--spacing-2xl));
}

.video-badge {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.95) 0%, rgba(139, 92, 246, 0.95) 100%);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  color: #fff;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.5);
  animation: pulse-glow 3s ease-in-out infinite;
  white-space: nowrap;
}

@keyframes pulse-glow {
  0%, 100% {
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.5);
  }
  50% {
    box-shadow: 0 4px 32px rgba(59, 130, 246, 0.8);
  }
}

.badge-icon {
  font-size: var(--font-size-base);
  line-height: 1;
}

.badge-text {
  white-space: nowrap;
  font-size: var(--font-size-sm);
  line-height: 1;
}

.demo-container {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-xl);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.demo-screen {
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.demo-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background-color: var(--color-bg-tertiary);
  border-bottom: 1px solid var(--color-border-subtle);
}

.demo-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--color-border-default);
}

.demo-dot:nth-child(1) { background-color: #ff5f56; }
.demo-dot:nth-child(2) { background-color: #ffbd2e; }
.demo-dot:nth-child(3) { background-color: #27c93f; }

.demo-title {
  margin-left: auto;
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.demo-body {
  padding: var(--spacing-xl);
  min-height: 400px;
}

.demo-query, .demo-response {
  margin-bottom: var(--spacing-xl);
}

.query-bubble {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-lg);
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.2) 0%, rgba(139, 92, 246, 0.2) 100%);
  border: 1px solid rgba(59, 130, 246, 0.3);
  border-radius: var(--radius-xl) var(--radius-xl) var(--radius-xl) 0;
  color: var(--color-text-primary);
  font-size: var(--font-size-base);
  max-width: 90%;
}

.response-bubble {
  padding: var(--spacing-lg);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
}

.response-header {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border-subtle);
}

.response-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.metric {
  text-align: center;
  padding: var(--spacing-sm);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
}

.metric-label {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-bottom: var(--spacing-xs);
}

.metric-value {
  display: block;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-accent-blue);
}

.response-insight, .response-recommendation {
  padding: var(--spacing-md);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
}

.response-insight {
  border-left: 3px solid var(--color-accent-blue);
}

.response-recommendation {
  border-left: 3px solid var(--color-accent-green);
}

.demo-note {
  margin-top: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  padding: var(--spacing-lg);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-subtle);
}

.demo-stat {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  padding: var(--spacing-xs) 0;
  line-height: 1.5;
}

.demo-stat strong {
  color: var(--color-brand-primary);
}

.stat-icon {
  font-size: var(--font-size-base);
  flex-shrink: 0;
  line-height: 1;
}

.workflow-cta {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
  margin-top: var(--spacing-4xl);
}

/* ==========================================================================
   FILTER TABS (Examples Page)
   ========================================================================== */

.filter-tabs {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: var(--spacing-3xl);
  padding: var(--spacing-md);
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-subtle);
}

.filter-tab {
  padding: var(--spacing-sm) var(--spacing-xl);
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-tab:hover {
  background-color: var(--color-bg-elevated);
  color: var(--color-text-primary);
  border-color: var(--color-brand-primary);
}

.filter-tab.active {
  background: var(--gradient-brand);
  color: #ffffff;
  border-color: transparent;
}

.example-card {
  transition: all var(--transition-base);
}

.example-card.hidden {
  display: none;
}

/* ==========================================================================
   SECTION STYLES
   ========================================================================== */

section {
  padding: var(--spacing-5xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-4xl);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.section-label {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--gradient-brand);
  color: #ffffff;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.section-title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-extrabold);
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ==========================================================================
   FEATURES
   ========================================================================== */

.features {
  background-color: var(--color-bg-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-xl);
}

.feature-card {
  padding: var(--spacing-2xl);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-brand-primary);
}

.feature-card.featured {
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05), rgba(139, 92, 246, 0.05));
  border-color: var(--color-brand-primary);
}

.feature-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-brand);
  border-radius: var(--radius-xl);
  margin-bottom: var(--spacing-lg);
  color: #ffffff;
}

.feature-title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-md);
}

.feature-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

.feature-list {
  list-style: none;
  margin-bottom: var(--spacing-lg);
}

.feature-list li {
  padding: var(--spacing-sm) 0;
  padding-left: var(--spacing-lg);
  position: relative;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.feature-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-brand-primary);
  font-weight: var(--font-weight-bold);
}

.feature-link {
  color: var(--color-brand-primary);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-sm);
}

.feature-link:hover {
  text-decoration: underline;
}

/* ==========================================================================
   ROI CALCULATOR
   ========================================================================== */

.roi-calculator {
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-2xl);
  padding: var(--spacing-3xl);
}

.calculator-inputs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-3xl);
}

.input-group {
  display: flex;
  flex-direction: column;
}

.input-group label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.input-group input,
.input-group select {
  padding: var(--spacing-md);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  transition: all var(--transition-fast);
}

.input-group input:focus,
.input-group select:focus {
  outline: none;
  border-color: var(--color-brand-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.calculator-results {
  margin-top: var(--spacing-3xl);
}

.result-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.result-card {
  padding: var(--spacing-xl);
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xl);
  text-align: center;
}

.result-card.highlight {
  grid-column: 1 / -1;
  background: var(--gradient-brand);
  color: #ffffff;
  padding: var(--spacing-2xl);
}

.result-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.result-card.highlight .result-label {
  color: rgba(255, 255, 255, 0.9);
}

.result-value {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-brand-primary);
}

.result-card.highlight .result-value {
  color: #ffffff;
  font-size: var(--font-size-6xl);
}

.result-value.investment {
  color: var(--color-text-tertiary);
}

.result-note {
  font-size: var(--font-size-xs);
  color: rgba(255, 255, 255, 0.8);
  margin-top: var(--spacing-xs);
}

.result-cta {
  text-align: center;
  padding: var(--spacing-2xl);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-xl);
}

/* ==========================================================================
   CASE STUDIES
   ========================================================================== */

.case-studies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

.case-study-card {
  padding: var(--spacing-3xl);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-2xl);
}

.case-study-company {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
}

.case-study-meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-bottom: var(--spacing-xl);
}

.case-study-challenge h3,
.case-study-results h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}

.case-study-challenge {
  margin-bottom: var(--spacing-xl);
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.result-metric {
  text-align: center;
  padding: var(--spacing-lg);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
}

.metric-value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-brand-primary);
  margin-bottom: var(--spacing-xs);
}

.metric-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.case-study-quote {
  padding: var(--spacing-xl);
  background-color: var(--color-bg-primary);
  border-left: 4px solid var(--color-brand-primary);
  border-radius: var(--radius-lg);
  font-style: italic;
  color: var(--color-text-secondary);
}

.case-study-quote cite {
  display: block;
  margin-top: var(--spacing-md);
  font-style: normal;
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

/* ==========================================================================
   DEVELOPERS SECTION
   ========================================================================== */

.developers {
  background-color: var(--color-bg-secondary);
}

.dev-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
}

.dev-feature {
  text-align: center;
  padding: var(--spacing-xl);
}

.dev-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--spacing-md);
  color: var(--color-brand-primary);
}

.dev-feature h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
}

.dev-feature p {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.api-demo {
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  margin-bottom: var(--spacing-3xl);
}

.api-tabs {
  display: flex;
  border-bottom: 1px solid var(--color-border-subtle);
  background-color: var(--color-bg-tertiary);
}

.api-tab {
  padding: var(--spacing-md) var(--spacing-xl);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.api-tab:hover {
  color: var(--color-text-primary);
  background-color: var(--color-bg-secondary);
}

.api-tab.active {
  color: var(--color-brand-primary);
  border-bottom-color: var(--color-brand-primary);
  background-color: var(--color-bg-primary);
}

.api-tab-content {
  display: none;
}

.api-tab-content.active {
  display: block;
}

.code-block {
  position: relative;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-xl);
  background-color: var(--color-bg-tertiary);
  border-bottom: 1px solid var(--color-border-subtle);
}

.code-lang {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.copy-btn {
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.copy-btn:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
}

.code-block pre {
  margin: 0;
  padding: var(--spacing-xl);
  overflow-x: auto;
  background-color: var(--color-bg-primary);
}

.code-block code {
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  color: var(--color-text-primary);
  background: none;
  padding: 0;
}

.dev-resources {
  padding: var(--spacing-2xl);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-xl);
}

.dev-resources h3 {
  margin-bottom: var(--spacing-lg);
}

.resource-links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

.resource-link {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.resource-link:hover {
  border-color: var(--color-brand-primary);
  transform: translateX(4px);
}

.resource-icon {
  font-size: var(--font-size-2xl);
}

/* ==========================================================================
   PRICING
   ========================================================================== */

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-3xl);
}

.pricing-card {
  position: relative;
  padding: var(--spacing-3xl);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-2xl);
  transition: all var(--transition-base);
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
}

.pricing-card.featured {
  border-color: var(--color-brand-primary);
  border-width: 2px;
  box-shadow: var(--shadow-xl);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  right: var(--spacing-xl);
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--gradient-brand);
  color: #ffffff;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-title {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-xs);
}

.pricing-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-bottom: var(--spacing-2xl);
}

.pricing-price {
  display: flex;
  align-items: baseline;
  margin-bottom: var(--spacing-xs);
}

.price-currency {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
}

.price-amount {
  font-size: var(--font-size-6xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-brand-primary);
}

.price-period {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-left: var(--spacing-xs);
}

.pricing-note {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-bottom: var(--spacing-xl);
}

.pricing-features {
  list-style: none;
  margin-bottom: var(--spacing-2xl);
}

.pricing-features li {
  padding: var(--spacing-md) 0;
  padding-left: var(--spacing-xl);
  position: relative;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.pricing-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-brand-primary);
  font-weight: var(--font-weight-bold);
}

.pricing-footer {
  text-align: center;
  padding: var(--spacing-2xl);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-xl);
}

/* ==========================================================================
   FORMS
   ========================================================================== */

.signup,
.demo-request {
  background-color: var(--color-bg-secondary);
}

.signup-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
}

.signup-benefits {
  margin: var(--spacing-2xl) 0;
}

.benefit-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) 0;
}

.benefit-icon {
  flex-shrink: 0;
  color: var(--color-brand-primary);
}

.trust-signals {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  margin-top: var(--spacing-3xl);
}

.trust-signal {
  text-align: center;
  padding: var(--spacing-lg);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-lg);
}

.trust-value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-brand-primary);
  margin-bottom: var(--spacing-xs);
}

.trust-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.signup-form-container,
.demo-form-container {
  padding: var(--spacing-3xl);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
}

.signup-form h3,
.demo-form h3 {
  margin-bottom: var(--spacing-xl);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-md);
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-brand-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group.checkbox {
  display: flex;
  align-items: center;
}

.form-group.checkbox label {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin: 0;
  cursor: pointer;
}

.form-group.checkbox input {
  width: auto;
  cursor: pointer;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.form-note {
  text-align: center;
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--spacing-md);
}

/* Form Validation Styles */
.form-group input:user-invalid,
.form-group select:user-invalid,
.form-group textarea:user-invalid {
  border-color: #ef4444;
}

.form-group input:user-valid:not(:placeholder-shown),
.form-group select:user-valid:not(:placeholder-shown),
.form-group textarea:user-valid:not(:placeholder-shown) {
  border-color: #10b981;
}

/* Fallback for browsers that don't support :user-invalid */
.form-group input.touched:invalid,
.form-group select.touched:invalid,
.form-group textarea.touched:invalid {
  border-color: #ef4444;
}

.form-group input.touched:valid:not(:placeholder-shown),
.form-group select.touched:valid:not(:placeholder-shown),
.form-group textarea.touched:valid:not(:placeholder-shown) {
  border-color: #10b981;
}

/* Form Messages */
.form-message {
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-xl);
  display: flex;
  align-items: center;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  animation: slideDown 0.3s ease-out;
}

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

.form-success {
  background-color: #d1fae5;
  color: #065f46;
  border: 1px solid #10b981;
}

.form-error {
  background-color: #fee2e2;
  color: #991b1b;
  border: 1px solid #ef4444;
}

.form-message svg {
  flex-shrink: 0;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.footer {
  background-color: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border-subtle);
  padding: var(--spacing-4xl) 0 var(--spacing-2xl);
}

.footer-main {
  display: grid;
  grid-template-columns: 2fr repeat(4, 1fr);
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
  border-bottom: 1px solid var(--color-border-subtle);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-md);
}

.footer-logo img {
  height: 32px;
  width: auto;
}

.footer-description {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

.footer-social {
  display: flex;
  gap: var(--spacing-md);
}

.social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.social-link:hover {
  background-color: var(--color-brand-primary);
  border-color: var(--color-brand-primary);
  color: #ffffff;
}

.footer-title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-md);
}

.footer-links {
  list-style: none;
}

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

.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-brand-primary);
}

.footer-contact {
  list-style: none;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.footer-contact li {
  margin-bottom: var(--spacing-md);
}

.footer-contact a {
  color: var(--color-text-secondary);
}

.footer-contact a:hover {
  color: var(--color-brand-primary);
}

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

.footer-legal p {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  margin-bottom: var(--spacing-sm);
}

.legal-links {
  display: flex;
  gap: var(--spacing-lg);
}

.legal-links a {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

.footer-badges {
  display: flex;
  gap: var(--spacing-md);
}

.badge {
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-cta {
    justify-content: center;
  }
  
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-main {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .signup-content {
    grid-template-columns: 1fr;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background-color: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border-subtle);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--spacing-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
  }
  
  .nav-menu.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav-list {
    flex-direction: column;
    gap: 0;
  }
  
  .nav-actions {
    flex-direction: column;
    width: 100%;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .hero-title {
    font-size: var(--font-size-4xl);
  }
  
  .section-title {
    font-size: var(--font-size-3xl);
  }
  
  .hero-stats {
    grid-template-columns: 1fr;
  }
  
  .trust-stats {
    grid-template-columns: 1fr;
  }
  
  .problem-content {
    grid-template-columns: 1fr;
  }
  
  .problem-visual {
    position: relative;
    top: 0;
    order: -1;
  }
  
  .problem-video-container {
    min-height: 400px;
  }
  
  .comparison-grid {
    gap: var(--spacing-lg);
  }
  
  .workflow-container {
    grid-template-columns: 1fr;
  }
  
  .workflow-visual {
    position: relative;
    top: 0;
    order: -1;
  }
  
  .demo-video-container {
    min-height: 450px;
  }
  
  .video-overlay {
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    max-width: calc(100% - var(--spacing-md));
  }
  
  .video-badge {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-xs);
  }
  
  .badge-text {
    font-size: var(--font-size-xs);
  }
  
  .badge-icon {
    font-size: var(--font-size-sm);
  }
  
  .video-header {
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-md);
  }
  
  .video-indicator {
    font-size: 10px;
  }
  
  .video-title {
    font-size: var(--font-size-xs);
  }
  
  .hero-video-container {
    padding: 25px;
    border: 4px solid var(--color-border-default);
  }
  
  .video-wrapper {
    padding: 25px;
    border: 4px solid var(--color-border-subtle);
  }
  
  .problem-video-wrapper {
    padding: 25px;
    border: 4px solid var(--color-border-subtle);
  }
  
  .hero-video-container {
    width: 100%;
  }
  
  .video-wrapper {
    width: 100%;
  }
  
  .problem-video-wrapper {
    width: 100%;
  }
  
  .hero-chat-message {
    font-size: 10px;
    padding: 4px 8px;
    max-width: 75%;
  }
  
  .hero-chat-demo {
    gap: 4px;
  }
  
  .hero-video-overlay {
    bottom: 8px;
    left: 8px;
    right: 8px;
    padding: var(--spacing-sm);
    max-height: 28%;
  }
  
  .problem-content {
    grid-template-columns: 1fr;
  }
  
  .workflow-step {
    flex-direction: column;
    text-align: center;
  }
  
  .step-number {
    margin: 0 auto;
  }
  
  .step-features {
    justify-content: center;
  }
  
  .response-metrics {
    grid-template-columns: 1fr;
  }
  
  .demo-body {
    padding: var(--spacing-md);
    min-height: 300px;
  }
  
  .footer-main {
    grid-template-columns: 1fr;
  }
  
  .calculator-inputs {
    grid-template-columns: 1fr;
  }
  
  .result-grid {
    grid-template-columns: 1fr;
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  
  .case-studies-grid {
    grid-template-columns: 1fr;
  }
  
  .results-grid {
    grid-template-columns: 1fr;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .trust-signals {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  :root {
    --container-padding: var(--spacing-md);
  }
  
  .hero {
    padding-top: 100px;
  }
  
  .hero-title {
    font-size: var(--font-size-3xl);
  }
  
  .section-title {
    font-size: var(--font-size-2xl);
  }
  
  .hero-cta {
    flex-direction: column;
  }
  
  .btn-lg {
    width: 100%;
  }
}