/**
 * ComplianceFlow - Modern SaaS Design System
 * Version: 3.1.0 - Ultra Professional Edition
 * @description Enhanced B2B SaaS styling with premium aesthetics
 * @license MIT
 */

/* Import Inter font */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

/* ==========================================================================
   1. CSS Variables - Design Tokens
   ========================================================================== */

:root {
  /* Primary Colors - Professional Blue */
  --color-primary-50: #eff6ff;
  --color-primary-100: #dbeafe;
  --color-primary-200: #bfdbfe;
  --color-primary-300: #93c5fd;
  --color-primary-400: #60a5fa;
  --color-primary-500: #3b82f6;
  --color-primary-600: #2563eb;
  --color-primary-700: #1d4ed8;
  --color-primary-800: #1e40af;
  --color-primary-900: #1e3a8a;

  /* Accent Colors - Compliance Green */
  --color-accent-50: #f0fdf4;
  --color-accent-100: #dcfce7;
  --color-accent-200: #bbf7d0;
  --color-accent-300: #86efac;
  --color-accent-400: #4ade80;
  --color-accent-500: #22c55e;
  --color-accent-600: #16a34a;
  --color-accent-700: #15803d;
  --color-accent-800: #166534;
  --color-accent-900: #14532d;

  /* Neutral Colors */
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* Semantic Colors */
  --color-success: var(--color-accent-500);
  --color-warning: #f59e0b;
  --color-error: #ef4444;
  --color-info: var(--color-primary-500);

  /* Background & Surface */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: var(--color-gray-50);
  --color-bg-tertiary: var(--color-gray-100);
  --color-surface: #ffffff;
  --color-surface-hover: var(--color-gray-50);

  /* Text Colors */
  --color-text-primary: var(--color-gray-900);
  --color-text-secondary: var(--color-gray-600);
  --color-text-tertiary: var(--color-gray-500);
  --color-text-inverse: #ffffff;

  /* Border & Divider */
  --color-border: var(--color-gray-200);
  --color-border-hover: var(--color-gray-300);
  --color-divider: var(--color-gray-200);

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, Monaco, monospace;

  /* Font Sizes */
  --text-xs: 0.75rem;     /* 12px */
  --text-sm: 0.875rem;    /* 14px */
  --text-base: 1rem;      /* 16px */
  --text-lg: 1.125rem;    /* 18px */
  --text-xl: 1.25rem;     /* 20px */
  --text-2xl: 1.5rem;     /* 24px */
  --text-3xl: 1.875rem;   /* 30px */
  --text-4xl: 2.25rem;    /* 36px */
  --text-5xl: 3rem;       /* 48px */
  --text-6xl: 3.75rem;    /* 60px */

  /* Font Weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  --font-extrabold: 800;

  /* Line Heights */
  --leading-none: 1;
  --leading-tight: 1.25;
  --leading-snug: 1.375;
  --leading-normal: 1.5;
  --leading-relaxed: 1.625;
  --leading-loose: 2;

  /* Spacing */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */

  /* Border Radius */
  --radius-sm: 0.25rem;   /* 4px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */
  --radius-2xl: 1.5rem;   /* 24px */
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-sm: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms 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;
  --z-toast: 9999;
}

/* ==========================================================================
   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;
}

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  overflow-x: hidden;
}

/* ==========================================================================
   3. Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
}

h1 {
  font-size: var(--text-5xl);
  font-weight: var(--font-extrabold);
  letter-spacing: -0.02em;
}

h2 {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  letter-spacing: -0.01em;
}

h3 {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
}

h4 {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
}

p {
  margin-bottom: var(--space-4);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

a {
  color: var(--color-primary-600);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-700);
}

a:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

strong {
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--color-gray-100);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  color: var(--color-primary-700);
}

/* ==========================================================================
   4. Layout & Container
   ========================================================================== */

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

@media (min-width: 640px) {
  .container {
    padding-left: var(--space-8);
    padding-right: var(--space-8);
  }
}

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

.section {
  padding: var(--space-20) 0;
}

.section-alt {
  background: linear-gradient(180deg, var(--color-gray-50) 0%, var(--color-bg-primary) 100%);
}

.section-header {
  text-align: center;
  max-width: 768px;
  margin: 0 auto var(--space-16);
}

.section-header h2 {
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-accent-600) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

/* ==========================================================================
   5. Header & Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) 0;
  gap: var(--space-8);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  transition: transform var(--transition-fast);
}

.brand:hover {
  transform: scale(1.02);
  color: var(--color-text-primary);
}

.brand-mark {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-accent-600) 100%);
  color: white;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  box-shadow: var(--shadow-md);
}

.brand-name {
  font-size: var(--text-xl);
  display: block;
  line-height: 1;
}

.brand-tagline {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  font-weight: var(--font-normal);
  display: block;
  margin-top: var(--space-1);
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: var(--space-6);
  align-items: center;
}

.main-nav a {
  color: var(--color-text-secondary);
  font-weight: var(--font-medium);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
  position: relative;
  padding: var(--space-2) 0;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary-600), var(--color-accent-600));
  transition: width var(--transition-base);
}

.main-nav a:hover {
  color: var(--color-primary-600);
}

.main-nav a:hover::after {
  width: 100%;
}

.header-cta {
  display: flex;
  gap: var(--space-3);
}

@media (max-width: 1023px) {
  .main-nav {
    display: none;
  }
}

/* ==========================================================================
   6. Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  line-height: 1;
  border-radius: var(--radius-lg);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  font-family: var(--font-sans);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-primary-700) 100%);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-primary-700) 0%, var(--color-primary-800) 100%);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  color: white;
}

.btn-secondary {
  background: white;
  color: var(--color-primary-600);
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--color-primary-50);
  border-color: var(--color-primary-200);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  color: var(--color-primary-700);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
}

.btn-ghost:hover {
  background: var(--color-gray-100);
  color: var(--color-text-primary);
}

.btn:disabled,
.btn.loading {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

/* ==========================================================================
   7. Hero Section
   ========================================================================== */

.hero {
  position: relative;
  padding: var(--space-24) 0 var(--space-20);
  background: linear-gradient(180deg, var(--color-primary-50) 0%, var(--color-bg-primary) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--color-accent-100) 0%, transparent 70%);
  opacity: 0.3;
  z-index: 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: center;
  position: relative;
  z-index: 1;
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }
}

.hero-text h1 {
  font-size: clamp(2.5rem, 5vw, 3.75rem);
  line-height: 1.1;
  margin-bottom: var(--space-6);
  color: var(--color-gray-900);
}

.hero-text .accent {
  background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-accent-600) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--text-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
  line-height: var(--leading-relaxed);
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

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

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-12);
}

.hero-actions .btn {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-6);
  list-style: none;
}

.hero-metrics li {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.hero-metrics strong {
  font-size: var(--text-3xl);
  font-weight: var(--font-extrabold);
  background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-accent-600) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-metrics span {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.hero-panel {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-xl);
}

.hero-panel-title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
  color: var(--color-text-primary);
}

.hero-panel-caption {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.code-block {
  background: var(--color-gray-900);
  color: var(--color-accent-400);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  box-shadow: var(--shadow-lg);
}

.hero-panel-footnote {
  font-size: var(--text-xs);
  color: var(--color-text-tertiary);
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

/* ==========================================================================
   8. Logo Section (Social Proof)
   ========================================================================== */

.logos {
  padding: var(--space-16) 0;
  background: var(--color-bg-primary);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.logos-inner {
  text-align: center;
}

.logos p {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-6);
}

.logos ul {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-8);
  list-style: none;
}

.logos li {
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  padding: var(--space-3) var(--space-6);
  background: var(--color-gray-50);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.logos li:hover {
  background: var(--color-primary-50);
  color: var(--color-primary-700);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   9. Cards & Grid
   ========================================================================== */

.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

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

@media (min-width: 1024px) {
  .cards-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--color-primary-200);
}

.card h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
  color: var(--color-primary-700);
}

.card-icon {
  display: block;
  text-align: center;
  margin-bottom: var(--space-4);
  font-size: 2.5rem;
  line-height: 1;
  opacity: 0.9;
}

.card-label {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent-700);
  background: var(--color-accent-50);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.card p {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

.card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.card li {
  position: relative;
  padding-left: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

.card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent-600);
  font-weight: var(--font-bold);
}

/* ==========================================================================
   10. Steps
   ========================================================================== */

.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  counter-reset: step;
  list-style: none;
  max-width: 900px;
  margin: 0 auto;
}

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

.steps li {
  position: relative;
  background: white;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--transition-base);
}

.steps li:hover {
  border-color: var(--color-primary-300);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.steps h3 {
  font-size: var(--text-xl);
  color: var(--color-primary-700);
  margin-bottom: var(--space-3);
}

.steps p {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin: 0;
}

/* ==========================================================================
   11. Demo Section
   ========================================================================== */

.demo-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

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

.demo-card {
  background: linear-gradient(180deg, white 0%, var(--color-gray-50) 100%);
  padding: var(--space-8);
}

.demo-card h3 {
  font-size: var(--text-xl);
  color: var(--color-primary-700);
  margin-bottom: var(--space-3);
}

.demo-card p {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

.demo-card input[type="file"],
.demo-card textarea {
  width: 100%;
  padding: var(--space-3);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-family: var(--font-sans);
  margin-bottom: var(--space-4);
  transition: border-color var(--transition-fast);
}

.demo-card input[type="file"]:focus,
.demo-card textarea:focus {
  outline: none;
  border-color: var(--color-primary-400);
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

.demo-card textarea {
  font-family: var(--font-mono);
  resize: vertical;
  min-height: 120px;
}

.demo-output {
  background: var(--color-gray-900);
  color: var(--color-accent-400);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  overflow-x: auto;
  min-height: 100px;
  margin-top: var(--space-4);
  white-space: pre-wrap;
  word-wrap: break-word;
  border: 2px solid var(--color-gray-700);
  transition: border-color var(--transition-base);
}

/* ==========================================================================
   12. Pricing
   ========================================================================== */

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  max-width: 1100px;
  margin: 0 auto;
}

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

.price-card {
  background: white;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-2xl);
  padding: var(--space-10);
  transition: all var(--transition-base);
  position: relative;
  display: flex;
  flex-direction: column;
}

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

.price-card--highlight {
  background: linear-gradient(180deg, var(--color-primary-50) 0%, white 100%);
  border-color: var(--color-primary-400);
  border-width: 3px;
  transform: scale(1.05);
}

.price-card--highlight::before {
  content: 'Más popular';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-accent-600) 100%);
  color: white;
  padding: var(--space-2) var(--space-6);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: var(--shadow-md);
}

.price-card h3 {
  font-size: var(--text-2xl);
  margin-bottom: var(--space-4);
  color: var(--color-text-primary);
}

.price {
  font-size: var(--text-4xl);
  font-weight: var(--font-extrabold);
  color: var(--color-primary-700);
  margin-bottom: var(--space-8);
  display: block;
}

.price-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  flex-grow: 1;
  margin-bottom: var(--space-6);
}

.price-card li {
  position: relative;
  padding-left: var(--space-6);
  font-size: var(--text-base);
  color: var(--color-text-secondary);
}

.price-card li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent-600);
  font-weight: var(--font-bold);
  font-size: var(--text-lg);
}

/* ==========================================================================
   13. FAQ
   ========================================================================== */

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.faq-list details {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all var(--transition-base);
}

.faq-list details:hover {
  border-color: var(--color-primary-200);
  box-shadow: var(--shadow-md);
}

.faq-list details[open] {
  border-color: var(--color-primary-400);
  box-shadow: var(--shadow-lg);
}

.faq-list summary {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color var(--transition-fast);
}

.faq-list summary:hover {
  color: var(--color-primary-600);
}

.faq-list summary::after {
  content: '+';
  font-size: var(--text-2xl);
  color: var(--color-primary-600);
  transition: transform var(--transition-base);
}

.faq-list details[open] summary::after {
  transform: rotate(45deg);
}

.faq-list div {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
}

.faq-list p {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  margin: 0;
}

/* ==========================================================================
   14. Footer
   ========================================================================== */

.site-footer {
  background: var(--color-gray-900);
  color: var(--color-gray-300);
  padding: var(--space-16) 0 var(--space-8);
  margin-top: var(--space-24);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: var(--space-8);
}

.site-footer p {
  color: var(--color-gray-400);
  margin-bottom: var(--space-2);
}

.site-footer a {
  color: var(--color-gray-300);
  transition: color var(--transition-fast);
}

.site-footer a:hover {
  color: white;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-links a {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
}

/* ==========================================================================
   15. Utilities
   ========================================================================== */

.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary-600);
  color: white;
  padding: var(--space-2) var(--space-4);
  text-decoration: none;
  border-radius: var(--radius-md);
  z-index: 100;
}

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

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

/* ==========================================================================
   16. Animations
   ========================================================================== */

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideOutRight {
  from {
    opacity: 1;
    transform: translateX(0);
  }
  to {
    opacity: 0;
    transform: translateX(30px);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* Apply animations on scroll */
@media (prefers-reduced-motion: no-preference) {
  .hero-text {
    animation: slideInLeft 0.8s ease-out;
  }

  .hero-panel {
    animation: slideInRight 0.8s ease-out;
  }

  .card {
    animation: fadeIn 0.6s ease-out backwards;
  }

  .card:nth-child(1) { animation-delay: 0.1s; }
  .card:nth-child(2) { animation-delay: 0.2s; }
  .card:nth-child(3) { animation-delay: 0.3s; }
  .card:nth-child(4) { animation-delay: 0.4s; }
}

/* ==========================================================================
   17. Mobile Responsive
   ========================================================================== */

@media (max-width: 767px) {
  .hero {
    padding: var(--space-16) 0 var(--space-12);
  }

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

  .hero-subtitle {
    font-size: var(--text-base);
  }

  .section {
    padding: var(--space-12) 0;
  }

  .section-header h2 {
    font-size: var(--text-3xl);
  }

  .cards-grid,
  .pricing-grid,
  .demo-grid {
    grid-template-columns: 1fr;
  }

  .price-card--highlight {
    transform: scale(1);
  }

  .footer-inner {
    flex-direction: column;
  }

  .footer-links {
    width: 100%;
  }
}

/* ==========================================================================
   18. Print Styles
   ========================================================================== */

@media print {
  .site-header,
  .site-footer,
  .hero-actions,
  .demo-grid,
  .skip-link,
  .header-cta {
    display: none;
  }

  body {
    font-size: 12pt;
    color: black;
    background: white;
  }

  .section {
    page-break-inside: avoid;
  }

  .card,
  .price-card {
    box-shadow: none;
    border: 1px solid #000;
  }

  a {
    text-decoration: underline;
  }

  a[href]:after {
    content: " (" attr(href) ")";
  }
}