/**
 * CPF.CNPJ Landing Pages - Styles
 * Modern, optimized CSS for Brazilian document validation landing pages
 * Mobile-first, performance-focused, accessibility-ready
 */

/* ==========================================================================
   1. CSS CUSTOM PROPERTIES (Variables)
   ========================================================================== */

:root {
  /* Primary Colors - Trust & Security */
  --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;
  --color-primary-950: #172554;

  /* Secondary Colors - Success & Validation */
  --color-secondary-50: #ecfdf5;
  --color-secondary-100: #d1fae5;
  --color-secondary-200: #a7f3d0;
  --color-secondary-300: #6ee7b7;
  --color-secondary-400: #34d399;
  --color-secondary-500: #10b981;
  --color-secondary-600: #059669;
  --color-secondary-700: #047857;
  --color-secondary-800: #065f46;
  --color-secondary-900: #064e3b;

  /* 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;
  --color-gray-950: #030712;

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

  /* Background Colors */
  --bg-body: #ffffff;
  --bg-section: var(--color-gray-50);
  --bg-section-alt: var(--color-primary-50);
  --bg-card: #ffffff;
  --bg-card-hover: var(--color-gray-50);

  /* Text Colors */
  --text-primary: var(--color-gray-900);
  --text-secondary: var(--color-gray-600);
  --text-tertiary: var(--color-gray-500);
  --text-inverse: #ffffff;
  --text-link: var(--color-primary-600);
  --text-link-hover: var(--color-primary-700);

  /* Border Colors */
  --border-light: var(--color-gray-200);
  --border-medium: var(--color-gray-300);
  --border-focus: var(--color-primary-500);

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

  /* Font Sizes - Fluid Typography */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
  --text-sm: clamp(0.8125rem, 0.775rem + 0.1875vw, 0.875rem);
  --text-base: clamp(0.9375rem, 0.9rem + 0.1875vw, 1rem);
  --text-lg: clamp(1.0625rem, 1rem + 0.3125vw, 1.125rem);
  --text-xl: clamp(1.1875rem, 1.1rem + 0.4375vw, 1.25rem);
  --text-2xl: clamp(1.375rem, 1.25rem + 0.625vw, 1.5rem);
  --text-3xl: clamp(1.625rem, 1.45rem + 0.875vw, 1.875rem);
  --text-4xl: clamp(1.875rem, 1.6rem + 1.375vw, 2.25rem);
  --text-5xl: clamp(2.25rem, 1.85rem + 2vw, 3rem);
  --text-6xl: clamp(2.75rem, 2.2rem + 2.75vw, 3.75rem);

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

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

  /* Letter Spacing */
  --tracking-tight: -0.025em;
  --tracking-normal: 0;
  --tracking-wide: 0.025em;

  /* Spacing Scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-3xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --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);
  --shadow-inner: inset 0 2px 4px 0 rgb(0 0 0 / 0.05);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 200ms ease;
  --transition-slow: 300ms ease;
  --transition-slower: 500ms ease;

  /* Z-Index Scale */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;

  /* Container */
  --container-max: 1200px;
  --container-padding: var(--space-4);

  /* Header */
  --header-height: 4rem;
}

/* Dark Mode Variables (optional - uncomment to enable)
@media (prefers-color-scheme: dark) {
  :root {
    --bg-body: var(--color-gray-950);
    --bg-section: var(--color-gray-900);
    --bg-section-alt: var(--color-gray-800);
    --bg-card: var(--color-gray-900);
    --bg-card-hover: var(--color-gray-800);
    --text-primary: var(--color-gray-100);
    --text-secondary: var(--color-gray-400);
    --text-tertiary: var(--color-gray-500);
    --border-light: var(--color-gray-800);
    --border-medium: var(--color-gray-700);
  }
}
*/

/* ==========================================================================
   2. CSS RESET (Minimal & Modern)
   ========================================================================== */

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

* {
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  -moz-tab-size: 4;
  tab-size: 4;
  scroll-behavior: smooth;
}

@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-family-base);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

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

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  background: transparent;
  border: none;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

/* ==========================================================================
   3. BASE ELEMENTS
   ========================================================================== */

/* Links */
.link {
  color: var(--text-link);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--transition-fast);
}

.link:hover,
.link:focus-visible {
  color: var(--text-link-hover);
}

/* Focus Styles */
:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

/* Selection */
::selection {
  background-color: var(--color-primary-200);
  color: var(--color-primary-900);
}

/* ==========================================================================
   4. LAYOUT & GRID SYSTEM
   ========================================================================== */

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.container--narrow {
  max-width: 900px;
}

.container--wide {
  max-width: 1400px;
}

/* Section Spacing */
.section {
  padding-block: var(--space-16);
}

.section--sm {
  padding-block: var(--space-10);
}

.section--lg {
  padding-block: var(--space-24);
}

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

.section--primary {
  background-color: var(--bg-section-alt);
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--space-6);
}

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

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

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

/* Flex Utilities */
.flex {
  display: flex;
}

.flex--center {
  align-items: center;
  justify-content: center;
}

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

.flex--col {
  flex-direction: column;
}

.flex--wrap {
  flex-wrap: wrap;
}

.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* ==========================================================================
   5. TYPOGRAPHY
   ========================================================================== */

.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-base { font-size: var(--text-base); }
.text-lg { font-size: var(--text-lg); }
.text-xl { font-size: var(--text-xl); }
.text-2xl { font-size: var(--text-2xl); }
.text-3xl { font-size: var(--text-3xl); }
.text-4xl { font-size: var(--text-4xl); }
.text-5xl { font-size: var(--text-5xl); }
.text-6xl { font-size: var(--text-6xl); }

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary { color: var(--text-tertiary); }
.text-accent { color: var(--color-primary-600); }
.text-success { color: var(--color-success); }

.font-normal { font-weight: var(--font-normal); }
.font-medium { font-weight: var(--font-medium); }
.font-semibold { font-weight: var(--font-semibold); }
.font-bold { font-weight: var(--font-bold); }

/* Headings */
.heading-1 {
  font-size: var(--text-5xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
}

.heading-2 {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
}

.heading-3 {
  font-size: var(--text-3xl);
  font-weight: var(--font-semibold);
  line-height: var(--leading-snug);
}

.heading-4 {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  line-height: var(--leading-snug);
}

.heading-5 {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
}

.heading-6 {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
}

/* Lead Text */
.lead {
  font-size: var(--text-xl);
  line-height: var(--leading-relaxed);
  color: var(--text-secondary);
}

/* Section Header */
.section-header {
  text-align: center;
  max-width: 800px;
  margin-inline: auto;
  margin-bottom: var(--space-12);
}

.section-header__label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-primary-600);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  margin-bottom: var(--space-3);
}

.section-header__title {
  margin-bottom: var(--space-4);
}

.section-header__description {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* ==========================================================================
   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: var(--leading-none);
  text-align: center;
  white-space: nowrap;
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  cursor: pointer;
  border: 2px solid transparent;
}

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

.btn:disabled,
.btn--disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary Button */
.btn--primary {
  background-color: var(--color-primary-600);
  color: var(--text-inverse);
  border-color: var(--color-primary-600);
}

.btn--primary:hover {
  background-color: var(--color-primary-700);
  border-color: var(--color-primary-700);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

/* Secondary Button */
.btn--secondary {
  background-color: transparent;
  color: var(--color-primary-600);
  border-color: var(--color-primary-600);
}

.btn--secondary:hover {
  background-color: var(--color-primary-50);
  border-color: var(--color-primary-700);
  color: var(--color-primary-700);
}

/* Success Button */
.btn--success {
  background-color: var(--color-secondary-600);
  color: var(--text-inverse);
  border-color: var(--color-secondary-600);
}

.btn--success:hover {
  background-color: var(--color-secondary-700);
  border-color: var(--color-secondary-700);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Ghost Button */
.btn--ghost {
  background-color: transparent;
  color: var(--text-primary);
  border-color: transparent;
}

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

/* White Button */
.btn--white {
  background-color: #ffffff;
  color: var(--color-primary-700);
  border-color: #ffffff;
}

.btn--white:hover {
  background-color: var(--color-gray-100);
  border-color: var(--color-gray-100);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Button Sizes */
.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
}

.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
  border-radius: var(--radius-xl);
}

.btn--xl {
  padding: var(--space-5) var(--space-10);
  font-size: var(--text-xl);
  border-radius: var(--radius-xl);
}

/* Full Width Button */
.btn--full {
  width: 100%;
}

/* Button with Icon */
.btn__icon {
  width: 1.25em;
  height: 1.25em;
  flex-shrink: 0;
}

/* ==========================================================================
   7. CARDS
   ========================================================================== */

.card {
  background-color: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 1px solid var(--border-light);
  transition: all var(--transition-base);
}

.card--hover:hover {
  border-color: var(--border-medium);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card--shadow {
  box-shadow: var(--shadow-md);
  border: none;
}

.card--featured {
  border: 2px solid var(--color-primary-500);
  box-shadow: var(--shadow-lg);
  position: relative;
}

.card--featured::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: calc(var(--radius-xl) + 2px);
  background: linear-gradient(135deg, var(--color-primary-400), var(--color-secondary-400));
  z-index: -1;
  opacity: 0.2;
}

/* Card Header */
.card__header {
  margin-bottom: var(--space-4);
}

.card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary-100), var(--color-primary-50));
  color: var(--color-primary-600);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
}

.card__icon svg {
  width: 24px;
  height: 24px;
}

.card__title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-2);
}

.card__description {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* Card Footer */
.card__footer {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-light);
}

/* ==========================================================================
   8. BADGES & TAGS
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  line-height: var(--leading-normal);
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge--primary {
  background-color: var(--color-primary-100);
  color: var(--color-primary-700);
}

.badge--secondary {
  background-color: var(--color-secondary-100);
  color: var(--color-secondary-700);
}

.badge--neutral {
  background-color: var(--color-gray-100);
  color: var(--color-gray-700);
}

.badge--success {
  background-color: var(--color-secondary-100);
  color: var(--color-secondary-800);
}

.badge--warning {
  background-color: #fef3c7;
  color: #92400e;
}

.badge--error {
  background-color: #fee2e2;
  color: #991b1b;
}

/* Tag (larger, with optional remove button) */
.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  background-color: var(--color-gray-100);
  color: var(--color-gray-700);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
}

.tag--outline {
  background-color: transparent;
}

.tag__remove {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border-radius: var(--radius-full);
  background-color: var(--color-gray-300);
  color: var(--color-gray-600);
  transition: all var(--transition-fast);
}

.tag__remove:hover {
  background-color: var(--color-gray-400);
  color: var(--color-gray-800);
}

/* ==========================================================================
   9. HEADER & NAVIGATION
   ========================================================================== */

.header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-light);
  height: var(--header-height);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-primary-700);
}

.header__logo img {
  height: 32px;
  width: auto;
}

.header__nav {
  display: none;
}

.header__nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.header__nav-link {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.header__nav-link:hover {
  color: var(--color-primary-600);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Mobile Menu Button */
.header__menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--text-primary);
}

/* ==========================================================================
   10. HERO SECTION
   ========================================================================== */

.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-primary-900) 0%, var(--color-primary-700) 50%, var(--color-primary-600) 100%);
  color: var(--text-inverse);
  padding-block: var(--space-16);
}

.hero--lg {
  padding-block: var(--space-24);
}

/* Background Pattern */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

/* Decorative Elements */
.hero__decoration {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  pointer-events: none;
}

.hero__decoration--1 {
  width: 300px;
  height: 300px;
  top: -100px;
  right: -100px;
}

.hero__decoration--2 {
  width: 200px;
  height: 200px;
  bottom: -50px;
  left: -50px;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  margin-bottom: var(--space-6);
  backdrop-filter: blur(4px);
}

.hero__title {
  font-size: var(--text-5xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  max-width: 900px;
  margin-bottom: var(--space-6);
}

.hero__title-highlight {
  background: linear-gradient(135deg, var(--color-secondary-300), var(--color-secondary-400));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__description {
  font-size: var(--text-xl);
  line-height: var(--leading-relaxed);
  max-width: 700px;
  margin-bottom: var(--space-8);
  opacity: 0.9;
}

.hero__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  width: 100%;
  max-width: 400px;
}

.hero__stats {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-8);
  margin-top: var(--space-12);
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.hero__stat {
  text-align: center;
}

.hero__stat-value {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-1);
}

.hero__stat-label {
  font-size: var(--text-sm);
  opacity: 0.8;
}

/* ==========================================================================
   11. FEATURES SECTION
   ========================================================================== */

.features {
  padding-block: var(--space-20);
}

.features__grid {
  display: grid;
  gap: var(--space-6);
  grid-template-columns: 1fr;
}

.feature-card {
  background-color: var(--bg-card);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 1px solid var(--border-light);
  transition: all var(--transition-base);
}

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

.feature-card__icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
  color: var(--text-inverse);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-5);
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.3);
}

.feature-card__icon svg {
  width: 28px;
  height: 28px;
}

.feature-card__title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-3);
}

.feature-card__description {
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* Feature List */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.feature-list__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.feature-list__icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--color-secondary-500);
  margin-top: 2px;
}

/* ==========================================================================
   12. BENEFITS SECTION
   ========================================================================== */

.benefits {
  background-color: var(--bg-section);
  padding-block: var(--space-20);
}

.benefits__content {
  display: grid;
  gap: var(--space-12);
  align-items: center;
}

.benefits__text {
  max-width: 600px;
}

.benefits__title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

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

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

.benefit-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  padding: var(--space-4);
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  transition: all var(--transition-base);
}

.benefit-item:hover {
  border-color: var(--color-primary-200);
  box-shadow: var(--shadow-md);
}

.benefit-item__icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-secondary-100);
  color: var(--color-secondary-600);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.benefit-item__icon svg {
  width: 22px;
  height: 22px;
}

.benefit-item__content {
  flex: 1;
}

.benefit-item__title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-1);
}

.benefit-item__description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

/* Benefits Visual */
.benefits__visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.benefits__image {
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  border: 4px solid var(--bg-card);
}

/* ==========================================================================
   13. STATISTICS SECTION
   ========================================================================== */

.stats {
  background: linear-gradient(135deg, var(--color-primary-700), var(--color-primary-800));
  color: var(--text-inverse);
  padding-block: var(--space-16);
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

.stat-item {
  text-align: center;
  padding: var(--space-4);
}

.stat-item__value {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-2);
  background: linear-gradient(135deg, #ffffff, var(--color-secondary-300));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-item__label {
  font-size: var(--text-sm);
  opacity: 0.9;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

/* ==========================================================================
   14. FAQ SECTION (Accordion)
   ========================================================================== */

.faq {
  padding-block: var(--space-20);
}

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

.faq-item {
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.faq-item:hover {
  border-color: var(--border-medium);
}

.faq-item.is-open {
  border-color: var(--color-primary-300);
  box-shadow: var(--shadow-md);
}

.faq-item__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  cursor: pointer;
  user-select: none;
}

.faq-item__question {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--text-primary);
  text-align: left;
}

.faq-item__icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  color: var(--color-primary-500);
  transition: transform var(--transition-base);
}

.faq-item.is-open .faq-item__icon {
  transform: rotate(180deg);
}

.faq-item__content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.faq-item.is-open .faq-item__content {
  max-height: 500px;
}

.faq-item__answer {
  padding: 0 var(--space-6) var(--space-6);
  color: var(--text-secondary);
  line-height: var(--leading-relaxed);
}

.faq-item__answer p + p {
  margin-top: var(--space-4);
}

/* ==========================================================================
   15. CALL TO ACTION SECTION
   ========================================================================== */

.cta {
  background: linear-gradient(135deg, var(--color-primary-600) 0%, var(--color-primary-800) 100%);
  color: var(--text-inverse);
  padding-block: var(--space-16);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
  pointer-events: none;
}

.cta__inner {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin-inline: auto;
}

.cta__title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

.cta__description {
  font-size: var(--text-lg);
  opacity: 0.9;
  margin-bottom: var(--space-8);
  line-height: var(--leading-relaxed);
}

.cta__actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

/* ==========================================================================
   16. FOOTER
   ========================================================================== */

.footer {
  background-color: var(--color-gray-900);
  color: var(--color-gray-300);
  padding-top: var(--space-16);
}

.footer__main {
  display: grid;
  gap: var(--space-10);
  padding-bottom: var(--space-12);
}

.footer__brand {
  max-width: 320px;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--text-inverse);
  margin-bottom: var(--space-4);
}

.footer__description {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

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

.footer__social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-gray-800);
  border-radius: var(--radius-md);
  color: var(--color-gray-400);
  transition: all var(--transition-fast);
}

.footer__social-link:hover {
  background-color: var(--color-primary-600);
  color: var(--text-inverse);
  transform: translateY(-2px);
}

.footer__social-link svg {
  width: 20px;
  height: 20px;
}

/* Footer Navigation */
.footer__nav {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

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

.footer__nav-title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--text-inverse);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

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

.footer__nav-link {
  font-size: var(--text-sm);
  color: var(--color-gray-400);
  transition: color var(--transition-fast);
}

.footer__nav-link:hover {
  color: var(--text-inverse);
}

/* Footer Bottom */
.footer__bottom {
  border-top: 1px solid var(--color-gray-800);
  padding-block: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  text-align: center;
}

.footer__copyright {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
}

.footer__legal-link {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
  transition: color var(--transition-fast);
}

.footer__legal-link:hover {
  color: var(--color-gray-300);
}

/* ==========================================================================
   17. TRUST INDICATORS
   ========================================================================== */

.trust {
  padding-block: var(--space-12);
  background-color: var(--bg-section);
}

.trust__title {
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  text-align: center;
  margin-bottom: var(--space-6);
}

.trust__logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-8);
}

.trust__logo {
  height: 32px;
  opacity: 0.6;
  filter: grayscale(100%);
  transition: all var(--transition-base);
}

.trust__logo:hover {
  opacity: 1;
  filter: grayscale(0%);
}

/* Trust Badges */
.trust-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background-color: var(--bg-card);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
}

.trust-badge__icon {
  width: 18px;
  height: 18px;
  color: var(--color-secondary-500);
}

/* ==========================================================================
   18. FORMS
   ========================================================================== */

.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  background-color: var(--bg-card);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-input:hover {
  border-color: var(--color-gray-400);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px var(--color-primary-100);
}

.form-input::placeholder {
  color: var(--color-gray-400);
}

.form-input--lg {
  padding: var(--space-4) var(--space-5);
  font-size: var(--text-lg);
  border-radius: var(--radius-lg);
}

.form-input--error {
  border-color: var(--color-error);
}

.form-input--error:focus {
  box-shadow: 0 0 0 3px #fee2e2;
}

.form-error {
  font-size: var(--text-sm);
  color: var(--color-error);
  margin-top: var(--space-1);
}

.form-help {
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  margin-top: var(--space-1);
}

/* Input with Button */
.input-group {
  display: flex;
  gap: var(--space-2);
}

.input-group .form-input {
  flex: 1;
}

/* ==========================================================================
   19. ANIMATIONS
   ========================================================================== */

/* Fade In */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.fade-in {
  animation: fadeIn var(--transition-slow) ease-out;
}

/* Fade In Up */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp var(--transition-slow) ease-out;
}

/* Fade In Down */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-down {
  animation: fadeInDown var(--transition-slow) ease-out;
}

/* Scale In */
@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.scale-in {
  animation: scaleIn var(--transition-slow) ease-out;
}

/* Slide In Left */
@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.slide-in-left {
  animation: slideInLeft var(--transition-slow) ease-out;
}

/* Slide In Right */
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.slide-in-right {
  animation: slideInRight var(--transition-slow) ease-out;
}

/* Pulse */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.7;
  }
}

.pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* Float */
@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.float {
  animation: float 3s ease-in-out infinite;
}

/* Stagger Children Animation */
.stagger-children > * {
  opacity: 0;
  animation: fadeInUp var(--transition-slow) ease-out forwards;
}

.stagger-children > *:nth-child(1) { animation-delay: 0ms; }
.stagger-children > *:nth-child(2) { animation-delay: 100ms; }
.stagger-children > *:nth-child(3) { animation-delay: 200ms; }
.stagger-children > *:nth-child(4) { animation-delay: 300ms; }
.stagger-children > *:nth-child(5) { animation-delay: 400ms; }
.stagger-children > *:nth-child(6) { animation-delay: 500ms; }

/* Intersection Observer Animation Triggers */
[data-animate] {
  opacity: 0;
}

[data-animate].is-visible {
  opacity: 1;
}

[data-animate="fade-up"] {
  transform: translateY(30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

[data-animate="fade-up"].is-visible {
  transform: translateY(0);
}

[data-animate="fade-down"] {
  transform: translateY(-30px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

[data-animate="fade-down"].is-visible {
  transform: translateY(0);
}

[data-animate="scale"] {
  transform: scale(0.9);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

[data-animate="scale"].is-visible {
  transform: scale(1);
}

/* ==========================================================================
   20. UTILITIES
   ========================================================================== */

/* Spacing */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mt-12 { margin-top: var(--space-12); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }

.py-4 { padding-block: var(--space-4); }
.py-8 { padding-block: var(--space-8); }
.py-12 { padding-block: var(--space-12); }
.py-16 { padding-block: var(--space-16); }

.px-4 { padding-inline: var(--space-4); }
.px-6 { padding-inline: var(--space-6); }
.px-8 { padding-inline: var(--space-8); }

/* Display */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.inline-flex { display: inline-flex; }

/* Width */
.w-full { width: 100%; }
.max-w-xs { max-width: 20rem; }
.max-w-sm { max-width: 24rem; }
.max-w-md { max-width: 28rem; }
.max-w-lg { max-width: 32rem; }
.max-w-xl { max-width: 36rem; }
.max-w-2xl { max-width: 42rem; }
.max-w-3xl { max-width: 48rem; }
.max-w-4xl { max-width: 56rem; }

/* Positioning */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

/* Screen Reader Only */
.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;
}

/* ==========================================================================
   21. MEDIA QUERIES
   ========================================================================== */

/* Small devices (landscape phones, 576px and up) */
@media (min-width: 576px) {
  :root {
    --container-padding: var(--space-6);
  }

  .hero__actions {
    flex-direction: row;
    justify-content: center;
  }

  .hero__actions .btn {
    min-width: 180px;
  }

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

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

  .cta__actions {
    flex-direction: row;
  }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
  :root {
    --header-height: 5rem;
  }

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

  .section--lg {
    padding-block: var(--space-32);
  }

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

  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .header__nav {
    display: block;
  }

  .header__menu-btn {
    display: none;
  }

  .hero {
    padding-block: var(--space-20);
  }

  .hero--lg {
    padding-block: var(--space-32);
  }

  .hero__title {
    font-size: var(--text-6xl);
  }

  .features__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }

  .benefits__content {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }

  .faq-item__question {
    font-size: var(--text-xl);
  }

  .footer__main {
    grid-template-columns: 1.5fr 2fr;
  }

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

  .footer__bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* Large devices (desktops, 992px and up) */
@media (min-width: 992px) {
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }

  .grid--4 {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

/* Extra large devices (large desktops, 1200px and up) */
@media (min-width: 1200px) {
  :root {
    --container-padding: var(--space-8);
  }

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

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

/* High DPI / Retina displays */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  /* Ensure crisp text on retina displays */
  body {
    -webkit-font-smoothing: subpixel-antialiased;
  }
}

/* Print Styles */
@media print {
  *,
  *::before,
  *::after {
    background: transparent !important;
    color: #000 !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }

  a,
  a:visited {
    text-decoration: underline;
  }

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

  .header,
  .footer,
  .btn,
  .no-print {
    display: none !important;
  }

  .container {
    max-width: none;
  }
}