:root {
  /* Primitive Color Tokens */
  --color-white: rgba(255, 255, 255, 1);
  --color-black: rgba(0, 0, 0, 1);
  --color-cream-50: rgba(252, 252, 249, 1);
  --color-cream-100: rgba(255, 255, 253, 1);
  --color-gray-200: rgba(245, 245, 245, 1);
  --color-gray-300: rgba(167, 169, 169, 1);
  --color-gray-400: rgba(119, 124, 124, 1);
  --color-slate-500: rgba(98, 108, 113, 1);
  --color-brown-600: rgba(94, 82, 64, 1);
  --color-charcoal-700: rgba(31, 33, 33, 1);
  --color-charcoal-800: rgba(38, 40, 40, 1);
  --color-slate-900: rgba(19, 52, 59, 1);
  --color-teal-300: rgba(50, 184, 198, 1);
  --color-teal-400: rgba(45, 166, 178, 1);
  --color-teal-500: rgba(33, 128, 141, 1);
  --color-teal-600: rgba(29, 116, 128, 1);
  --color-teal-700: rgba(26, 104, 115, 1);
  --color-teal-800: rgba(41, 150, 161, 1);
  --color-red-400: rgba(255, 84, 89, 1);
  --color-red-500: rgba(192, 21, 47, 1);
  --color-orange-400: rgba(230, 129, 97, 1);
  --color-orange-500: rgba(168, 75, 47, 1);
  --color-green-500: rgba(34, 197, 94, 1);

  /* RGB versions for opacity control */
  --color-brown-600-rgb: 94, 82, 64;
  --color-teal-500-rgb: 33, 128, 141;
  --color-slate-900-rgb: 19, 52, 59;
  --color-slate-500-rgb: 98, 108, 113;
  --color-red-500-rgb: 192, 21, 47;
  --color-red-400-rgb: 255, 84, 89;
  --color-orange-500-rgb: 168, 75, 47;
  --color-orange-400-rgb: 230, 129, 97;
  --color-green-500-rgb: 34, 197, 94;
  --color-gray-400-rgb: 119, 124, 124;
  --color-teal-300-rgb: 50, 184, 198;
  --color-gray-300-rgb: 167, 169, 169;
  --color-gray-200-rgb: 245, 245, 245;

  /* Background color tokens (Light Mode) */
  --color-bg-1: rgba(59, 130, 246, 0.08);
  --color-bg-2: rgba(245, 158, 11, 0.08);
  --color-bg-3: rgba(34, 197, 94, 0.08);
  --color-bg-4: rgba(239, 68, 68, 0.08);
  --color-bg-5: rgba(147, 51, 234, 0.08);
  --color-bg-6: rgba(249, 115, 22, 0.08);
  --color-bg-7: rgba(236, 72, 153, 0.08);
  --color-bg-8: rgba(6, 182, 212, 0.08);

  /* Semantic Color Tokens (Light Mode) */
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);
  --color-text-muted: var(--color-slate-500);
  --color-primary: var(--color-teal-500);
  --color-primary-hover: var(--color-teal-600);
  --color-primary-active: var(--color-teal-700);
  --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
  --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
  --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);
  --color-border: rgba(var(--color-brown-600-rgb), 0.2);
  --color-btn-primary-text: var(--color-cream-50);
  --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
  --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
  --color-error: var(--color-red-500);
  --color-success: var(--color-green-500);
  --color-warning: var(--color-orange-500);
  --color-info: var(--color-slate-500);
  --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);
  --color-select-caret: rgba(var(--color-slate-900-rgb), 0.8);

  /* Common style patterns */
  --focus-ring: 0 0 0 3px var(--color-focus-ring);
  --focus-outline: 2px solid var(--color-primary);
  --status-bg-opacity: 0.15;
  --status-border-opacity: 0.25;
  --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

  /* RGB versions for opacity control */
  --color-success-rgb: var(--color-green-500-rgb);
  --color-error-rgb: var(--color-red-500-rgb);
  --color-warning-rgb: var(--color-orange-500-rgb);
  --color-info-rgb: var(--color-slate-500-rgb);

  /* Typography - Fluid Type Scale */
  --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-mono: "Berkeley Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --font-size-xs: clamp(10px, 0.8vw, 11px);
  --font-size-sm: clamp(11px, 0.9vw, 12px);
  --font-size-base: clamp(13px, 1vw, 14px);
  --font-size-md: clamp(13px, 1vw, 14px);
  --font-size-lg: clamp(15px, 1.1vw, 16px);
  --font-size-xl: clamp(16px, 1.3vw, 18px);
  --font-size-2xl: clamp(18px, 1.5vw, 20px);
  --font-size-3xl: clamp(20px, 2vw, 24px);
  --font-size-4xl: clamp(24px, 2.5vw, 30px);
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 550;
  --font-weight-bold: 600;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --letter-spacing-tight: -0.01em;

  /* Fluid Spacing */
  --space-0: 0;
  --space-1: 1px;
  --space-2: 2px;
  --space-3: clamp(8px, 1vw, 12px);
  --space-4: clamp(3px, 0.5vw, 4px);
  --space-5: clamp(16px, 1.5vw, 20px);
  --space-6: clamp(4px, 0.7vw, 6px);
  --space-8: clamp(6px, 0.8vw, 8px);
  --space-10: clamp(8px, 1vw, 10px);
  --space-12: clamp(10px, 1.1vw, 12px);
  --space-16: clamp(12px, 1.3vw, 16px);
  --space-20: clamp(16px, 1.6vw, 20px);
  --space-24: clamp(18px, 2vw, 24px);
  --space-32: clamp(24px, 2.5vw, 32px);
  --space-48: clamp(32px, 3.5vw, 48px);
  --space-64: clamp(48px, 5vw, 64px);

  /* Border Radius */
  --radius-sm: 6px;
  --radius-base: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  --radius-full: 9999px;

  /* Enhanced Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.15), inset 0 -1px 0 rgba(0, 0, 0, 0.03);

  /* Animation */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
  --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);

  /* Layout - Responsive Containers */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1536px;
}

/* Dark mode colors */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg-1: rgba(29, 78, 216, 0.15);
    --color-bg-2: rgba(180, 83, 9, 0.15);
    --color-bg-3: rgba(21, 128, 61, 0.15);
    --color-bg-4: rgba(185, 28, 28, 0.15);
    --color-bg-5: rgba(107, 33, 168, 0.15);
    --color-bg-6: rgba(194, 65, 12, 0.15);
    --color-bg-7: rgba(190, 24, 93, 0.15);
    --color-bg-8: rgba(8, 145, 178, 0.15);

    --color-background: var(--color-charcoal-700);
    --color-surface: var(--color-charcoal-800);
    --color-text: var(--color-gray-200);
    --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
    --color-text-muted: rgba(var(--color-gray-300-rgb), 0.7);
    --color-primary: var(--color-teal-300);
    --color-primary-hover: var(--color-teal-400);
    --color-primary-active: var(--color-teal-800);
    --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
    --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
    --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);
    --color-border: rgba(var(--color-gray-400-rgb), 0.3);
    --color-error: var(--color-red-400);
    --color-success: var(--color-teal-300);
    --color-warning: var(--color-orange-400);
    --color-info: var(--color-gray-300);
    --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
    --color-btn-primary-text: var(--color-slate-900);
    --color-card-border: rgba(var(--color-gray-400-rgb), 0.2);
    --color-card-border-inner: rgba(var(--color-gray-400-rgb), 0.15);
    --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1), inset 0 -1px 0 rgba(0, 0, 0, 0.15);
    --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);
    --color-success-rgb: var(--color-teal-300-rgb);
    --color-error-rgb: var(--color-red-400-rgb);
    --color-warning-rgb: var(--color-orange-400-rgb);
    --color-info-rgb: var(--color-gray-300-rgb);
  }
}

/* Data attribute for manual theme switching */
[data-color-scheme="dark"] {
  --color-background: var(--color-charcoal-700);
  --color-surface: var(--color-charcoal-800);
  --color-text: var(--color-gray-200);
  --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
  --color-text-muted: rgba(var(--color-gray-300-rgb), 0.7);
  --color-primary: var(--color-teal-300);
  --color-primary-hover: var(--color-teal-400);
  --color-primary-active: var(--color-teal-800);
  --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
  --color-secondary-hover: rgba(var(--color-gray-400-rgb), 0.25);
  --color-secondary-active: rgba(var(--color-gray-400-rgb), 0.3);
  --color-border: rgba(var(--color-gray-400-rgb), 0.3);
  --color-error: var(--color-red-400);
  --color-success: var(--color-teal-300);
  --color-warning: var(--color-orange-400);
  --color-info: var(--color-gray-300);
  --color-focus-ring: rgba(var(--color-teal-300-rgb), 0.4);
  --color-btn-primary-text: var(--color-slate-900);
  --color-card-border: rgba(var(--color-gray-400-rgb), 0.15);
  --color-card-border-inner: rgba(var(--color-gray-400-rgb), 0.15);
  --shadow-inset-sm: inset 0 1px 0 rgba(255, 255, 255, 0.1), inset 0 -1px 0 rgba(0, 0, 0, 0.15);
  --color-select-caret: rgba(var(--color-gray-200-rgb), 0.8);
  --color-success-rgb: var(--color-teal-300-rgb);
  --color-error-rgb: var(--color-red-400-rgb);
  --color-warning-rgb: var(--color-orange-400-rgb);
  --color-info-rgb: var(--color-gray-300-rgb);
}

[data-color-scheme="light"] {
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);
  --color-text-muted: var(--color-slate-500);
  --color-primary: var(--color-teal-500);
  --color-primary-hover: var(--color-teal-600);
  --color-primary-active: var(--color-teal-700);
  --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
  --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
  --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);
  --color-border: rgba(var(--color-brown-600-rgb), 0.2);
  --color-btn-primary-text: var(--color-cream-50);
  --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
  --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
  --color-error: var(--color-red-500);
  --color-success: var(--color-green-500);
  --color-warning: var(--color-orange-500);
  --color-info: var(--color-slate-500);
  --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);
  --color-success-rgb: var(--color-green-500-rgb);
  --color-error-rgb: var(--color-red-500-rgb);
  --color-warning-rgb: var(--color-orange-500-rgb);
  --color-info-rgb: var(--color-slate-500-rgb);
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Container - Enhanced Responsive */
.container {
  width: 100%;
  max-width: min(1200px, 100% - var(--space-32));
  margin: 0 auto;
  padding: 0 var(--space-16);
}

@media (min-width: 640px) {
  .container {
    max-width: var(--container-sm);
  }
}

@media (min-width: 768px) {
  .container {
    max-width: var(--container-md);
    padding: 0 var(--space-24);
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: var(--container-lg);
    padding: 0 var(--space-32);
  }
}

@media (min-width: 1280px) {
  .container {
    max-width: var(--container-xl);
  }
}

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

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

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

.justify-between {
  justify-content: space-between;
}

.justify-center {
  justify-content: center;
}

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.gap-4 {
  gap: var(--space-4);
}

.gap-8 {
  gap: var(--space-8);
}

.gap-12 {
  gap: var(--space-12);
}

.gap-16 {
  gap: var(--space-16);
}

.gap-24 {
  gap: var(--space-24);
}

.py-16 {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}

.py-24 {
  padding-top: var(--space-24);
  padding-bottom: var(--space-24);
}

.py-32 {
  padding-top: var(--space-32);
  padding-bottom: var(--space-32);
}

.hidden {
  display: none;
}

/* Header - Enhanced */
.header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: background var(--duration-normal) var(--ease-standard);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.logo-text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  transition: transform var(--duration-fast) var(--ease-standard);
}

.logo-text:hover {
  transform: scale(1.02);
}

.nav-links {
  display: flex;
  gap: clamp(16px, 3vw, 32px);
  align-items: center;
}

.nav-link {
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: var(--font-weight-medium);
  transition: color var(--duration-fast) var(--ease-standard);
  position: relative;
  padding: var(--space-4) 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--duration-normal) var(--ease-standard);
}

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

.nav-link:hover::after {
  width: 100%;
}
/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  background: transparent;
  border: none;
  padding: var(--space-8);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-standard);
}

.mobile-menu-toggle:hover {
  background: var(--color-secondary);
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 3px;
  background: var(--color-text);
  margin: 3px 0;
  transition: all var(--duration-normal) var(--ease-standard);
  border-radius: 2px;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--duration-normal) var(--ease-standard);
}

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

/* Mobile Navigation Menu */
.nav-links.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100vh;
  background: var(--color-surface);
  flex-direction: column;
  justify-content: flex-start;
  align-items: stretch;
  padding: var(--space-24) var(--space-20);
  z-index: 1000;
  transition: right var(--duration-normal) var(--ease-standard);
  box-shadow: var(--shadow-xl);
  border-left: 1px solid var(--color-border);
}

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

.nav-links.mobile-menu .nav-link {
  padding: var(--space-16) var(--space-12);
  margin: var(--space-4) 0;
  text-align: center;
  border-radius: var(--radius-md);
  transition: all var(--duration-fast) var(--ease-standard);
  font-size: var(--font-size-lg);
}

.nav-links.mobile-menu .nav-link:hover {
  background: var(--color-secondary);
}

.nav-links.mobile-menu .nav-link::after {
  display: none;
}

.mobile-menu-close {
  position: absolute;
  top: var(--space-16);
  right: var(--space-16);
  background: transparent;
  border: none;
  font-size: var(--font-size-2xl);
  color: var(--color-text-muted);
  cursor: pointer;
  padding: var(--space-8);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-standard);
}

.mobile-menu-close:hover {
  background: var(--color-secondary);
  color: var(--color-text);
}


/* Sections - Enhanced */
.generator,
.validator,
.about {
  padding: var(--space-48) 0;
}

@media (max-width: 768px) {
  .generator,
  .validator,
  .about {
    padding: var(--space-32) 0;
  }
}

.generator {
  background: linear-gradient(135deg, rgba(var(--color-teal-500-rgb), 0.03) 0%, rgba(255, 255, 255, 0.01) 100%);
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  text-align: center;
  margin-bottom: var(--space-16);
  color: var(--color-text);
  letter-spacing: var(--letter-spacing-tight);
  line-height: var(--line-height-tight);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  text-align: center;
  color: var(--color-text-muted);
  margin-bottom: var(--space-24);
  line-height: var(--line-height-normal);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Cards - Enhanced with Glassmorphism */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-sm);
  transition: all var(--duration-normal) var(--ease-standard);
  overflow: hidden;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  border-color: rgba(var(--color-teal-500-rgb), 0.3);
}

.card__body {
  padding: clamp(16px, 3vw, 24px);
}

/* Generator Section */
.generator-content {
  max-width: 600px;
  margin: 0 auto;
  width: 100%;
}

.generator-form {
  margin-bottom: var(--space-32);
}

/* Forms - Enhanced */
.form-group {
  margin-bottom: var(--space-20);
}

.form-label {
  display: block;
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-8);
  color: var(--color-text);
  font-size: var(--font-size-sm);
}

.form-input,
.form-select {
  width: 100%;
  padding: var(--space-12) var(--space-16);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-surface);
  transition: all var(--duration-fast) var(--ease-standard);
  font-family: var(--font-family-base);
}

.form-select {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  background-image: var(--select-caret-light);
  background-repeat: no-repeat;
  background-position: right var(--space-12) center;
  background-size: 16px;
  padding-right: var(--space-32);
  cursor: pointer;
}

@media (prefers-color-scheme: dark) {
  .form-select {
    background-image: var(--select-caret-dark);
  }
}

[data-color-scheme="dark"] .form-select {
  background-image: var(--select-caret-dark);
}

[data-color-scheme="light"] .form-select {
  background-image: var(--select-caret-light);
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}

.form-input:hover,
.form-select:hover {
  border-color: rgba(var(--color-teal-500-rgb), 0.4);
}

/* Checkbox - Enhanced */
.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-12);
  cursor: pointer;
  font-weight: var(--font-weight-medium);
  user-select: none;
  transition: color var(--duration-fast) var(--ease-standard);
}

.checkbox-label:hover {
  color: var(--color-primary);
}

.checkbox-label input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--color-primary);
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-standard);
}

.checkbox-label input[type="checkbox"]:hover {
  transform: scale(1.1);
}

/* Buttons - Enhanced */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  padding: var(--space-12) var(--space-24);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-normal);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--duration-normal) var(--ease-standard);
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
  white-space: nowrap;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width var(--duration-slow) var(--ease-out), height var(--duration-slow) var(--ease-out);
}

.btn:active::before {
  width: 300px;
  height: 300px;
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  border-color: var(--color-primary);
}

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

.btn--primary:active {
  background: var(--color-primary-active);
  transform: translateY(0);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-border);
}

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

.btn--sm {
  padding: var(--space-6) var(--space-12);
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
}

.btn--lg {
  padding: var(--space-16) var(--space-32);
  font-size: var(--font-size-lg);
  border-radius: var(--radius-lg);
}

.btn--full {
  width: 100%;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn:disabled:hover {
  transform: none;
  box-shadow: none;
}

/* Loading Spinner */
.loading-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top: 2px solid currentColor;
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Results - Enhanced */
.results {
  margin-top: var(--space-32);
  animation: fadeInUp var(--duration-slow) var(--ease-out);
}

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

.results-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-20);
  flex-wrap: wrap;
  gap: var(--space-16);
}

.results-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.results-actions {
  display: flex;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.cpf-list {
  display: grid;
  gap: var(--space-12);
}

.cpf-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-16);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--duration-fast) var(--ease-standard);
  animation: slideIn var(--duration-normal) var(--ease-out);
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.cpf-item:hover {
  background: rgba(var(--color-teal-500-rgb), 0.05);
  border-color: rgba(var(--color-teal-500-rgb), 0.3);
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

.cpf-number {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

.copy-btn {
  padding: var(--space-6) var(--space-16);
  background: transparent;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-standard);
  white-space: nowrap;
}

.copy-btn:hover {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  transform: scale(1.05);
}

.copy-btn.copied {
  background: var(--color-success);
  border-color: var(--color-success);
  color: var(--color-white);
}

/* Validator Section */
.validator-content {
  max-width: 500px;
  margin: 0 auto;
  width: 100%;
}

.validation-result {
  margin-top: var(--space-20);
  padding: var(--space-20);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  animation: fadeInUp var(--duration-slow) var(--ease-out);
}

.validation-status {
  display: flex;
  align-items: center;
  gap: var(--space-16);
}

.status-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  color: var(--color-white);
  flex-shrink: 0;
  transition: transform var(--duration-normal) var(--ease-standard);
}

.status-icon.valid {
  background: var(--color-success);
  animation: scaleIn var(--duration-normal) var(--ease-out);
}

@keyframes scaleIn {
  from {
    transform: scale(0);
  }
  to {
    transform: scale(1);
  }
}

.status-icon.valid::after {
  content: '✓';
}

.status-icon.invalid {
  background: var(--color-error);
  animation: shake var(--duration-slow) var(--ease-standard);
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

.status-icon.invalid::after {
  content: '✗';
}

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

.status-text.valid {
  color: var(--color-success);
}

.status-text.invalid {
  color: var(--color-error);
}

/* About Section - Enhanced Grid */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
  gap: var(--space-24);
  margin-top: var(--space-24);
}

.about-item-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-16);
  color: var(--color-text);
}

.about-item-text {
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* Footer - Enhanced */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-24) 0;
  margin-top: auto;
}

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

.footer-text {
  color: var(--color-text-muted);
  margin-bottom: var(--space-8);
  font-size: var(--font-size-sm);
}

.footer-disclaimer {
  color: var(--color-orange-500);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
}

/* Status Indicators */
.status {
  display: inline-flex;
  align-items: center;
  padding: var(--space-6) var(--space-12);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-sm);
  gap: var(--space-6);
}

.status--success {
  background-color: rgba(var(--color-success-rgb), var(--status-bg-opacity));
  color: var(--color-success);
  border: 1px solid rgba(var(--color-success-rgb), var(--status-border-opacity));
}

.status--error {
  background-color: rgba(var(--color-error-rgb), var(--status-bg-opacity));
  color: var(--color-error);
  border: 1px solid rgba(var(--color-error-rgb), var(--status-border-opacity));
}

.status--warning {
  background-color: rgba(var(--color-warning-rgb), var(--status-bg-opacity));
  color: var(--color-warning);
  border: 1px solid rgba(var(--color-warning-rgb), var(--status-border-opacity));
}

.status--info {
  background-color: rgba(var(--color-info-rgb), var(--status-bg-opacity));
  color: var(--color-info);
  border: 1px solid rgba(var(--color-info-rgb), var(--status-border-opacity));
}

/* Utility Classes */
.m-0 { margin: 0; }
.mt-8 { margin-top: var(--space-8); }
.mb-8 { margin-bottom: var(--space-8); }
.mx-8 { margin-left: var(--space-8); margin-right: var(--space-8); }
.my-8 { margin-top: var(--space-8); margin-bottom: var(--space-8); }
.p-0 { padding: 0; }
.py-8 { padding-top: var(--space-8); padding-bottom: var(--space-8); }
.px-8 { padding-left: var(--space-8); padding-right: var(--space-8); }
.block { display: block; }

/* Accessibility */
.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;
}

:focus-visible {
  outline: var(--focus-outline);
  outline-offset: 2px;
}

/* Responsive Design - Enhanced */
@media (max-width: 1024px) {
  .container {
    padding: 0 var(--space-20);
  }
}

@media (max-width: 768px) {
  .nav-links:not(.mobile-menu) {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .nav-link {
    font-size: var(--font-size-sm);
  }

  .section-title {
    font-size: var(--font-size-2xl);
  }

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

  .results-header {
    flex-direction: column;
    align-items: stretch;
  }

  .results-actions {
    justify-content: center;
  }

  .cpf-item {
    flex-direction: column;
    gap: var(--space-12);
    text-align: center;
  }

  .copy-btn {
    width: 100%;
  }

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

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-16);
  }

  .py-16 {
    padding-top: var(--space-24);
    padding-bottom: var(--space-24);
  }

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

  .generator,
  .validator,
  .about {
    padding: var(--space-24) 0;
  }

  .section-title {
    font-size: var(--font-size-xl);
  }

  .section-subtitle {
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-16);
  }

  .generator-form {
    margin-bottom: var(--space-24);
  }

  .form-group {
    margin-bottom: var(--space-16);
  }

  .results {
    margin-top: var(--space-24);
  }

  .results-header {
    margin-bottom: var(--space-16);
    gap: var(--space-12);
  }

  .cpf-list {
    gap: var(--space-8);
  }

  .cpf-item {
    padding: var(--space-12);
  }

  .cpf-number {
    font-size: var(--font-size-base);
  }

  .validation-result {
    margin-top: var(--space-16);
    padding: var(--space-16);
  }

  .about-grid {
    gap: var(--space-20);
    margin-top: var(--space-20);
  }

  .about-item-title {
    margin-bottom: var(--space-12);
    font-size: var(--font-size-lg);
  }

  .btn {
    padding: var(--space-10) var(--space-20);
  }

  .btn--lg {
    padding: var(--space-12) var(--space-24);
  }

  .nav-links.mobile-menu {
    width: 100%;
    right: -100%;
  }

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

/* Mobile landscape optimization */
@media (max-height: 600px) and (orientation: landscape) {
  .generator,
  .validator,
  .about {
    padding: var(--space-20) 0;
  }

  .section-title {
    margin-bottom: var(--space-12);
  }
}

/* Tablet optimizations */
@media (min-width: 768px) and (max-width: 1024px) {
  .cpf-list {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }

  .about-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
}

/* Print styles */
@media print {
  .header,
  .footer,
  .btn,
  .nav-links {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

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

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

@font-face {
  font-family: 'FKGroteskNeue';
  src: url('https://r2cdn.perplexity.ai/fonts/FKGroteskNeue.woff2') format('woff2');
  font-display: swap;
}


/* Article Section Styles */
.article-section {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    padding: 4rem 0;
    margin-top: 2rem;
}

.article-content {
    max-width: 900px;
    margin: 0 auto;
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    overflow: hidden;
}

/* Table of Contents */
.table-of-contents {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    padding: 2rem;
    margin-bottom: 0;
}

.table-of-contents h3 {
    margin: 0 0 1rem 0;
    font-size: 1.2rem;
    font-weight: 600;
}

.table-of-contents ul {
    list-style: none;
    padding: 0;
    margin: 0;
    columns: 2;
    column-gap: 2rem;
}

.table-of-contents li {
    break-inside: avoid;
    margin-bottom: 0.5rem;
}

.table-of-contents a {
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    display: block;
    padding: 0.25rem 0;
}

.table-of-contents a:hover {
    color: white;
    padding-left: 0.5rem;
}

/* Article Header */
.article-header {
    padding: 3rem 2rem 2rem;
    text-align: center;
    border-bottom: 2px solid #e2e8f0;
}

.article-header h1 {
    font-size: 2.5rem;
    color: #1e293b;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    color: #64748b;
    font-size: 0.9rem;
}

/* Article Section Content */
.article-section-content {
    padding: 2rem;
    border-bottom: 1px solid #e2e8f0;
}

.article-section-content:last-child {
    border-bottom: none;
}

.article-section-content h2 {
    color: #4f46e5;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e0e7ff;
}

.article-section-content h3 {
    color: #1e293b;
    font-size: 1.3rem;
    margin: 2rem 0 1rem 0;
}

.article-section-content h4 {
    color: #475569;
    font-size: 1.1rem;
    margin: 1.5rem 0 0.75rem 0;
}

.article-section-content p {
    line-height: 1.7;
    margin-bottom: 1rem;
    color: #334155;
}

.article-section-content a {
    color: #4f46e5;
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}

.article-section-content a:hover {
    color: #3730a3;
    border-bottom-color: #4f46e5;
}

/* Special Boxes */
.highlight-box {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    border: 1px solid #f59e0b;
    border-radius: 12px;
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.info-table {
    margin: 1.5rem 0;
    overflow-x: auto;
}

.info-table table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.info-table th,
.info-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.info-table th {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    font-weight: 600;
}

.warning-box {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    border: 1px solid #f87171;
    border-radius: 12px;
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.warning-banner {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    color: white;
    padding: 2rem;
    border-radius: 12px;
    margin: 2rem 0;
    text-align: center;
}

.warning-banner h3 {
    color: white !important;
    margin-bottom: 1rem;
}

/* Grid Layouts */
.use-cases-grid,
.special-cases-grid,
.takeaway-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.use-case-card,
.case-card,
.takeaway-card {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.use-case-card:hover,
.case-card:hover,
.takeaway-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.use-case-card h3,
.case-card h3,
.takeaway-card h4 {
    color: #4f46e5;
    margin-bottom: 1rem;
}

/* Algorithm Steps */
.algorithm-steps {
    margin: 2rem 0;
}

.step-card {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 1.5rem;
    margin: 1rem 0;
}

.step-card h4 {
    color: #4f46e5;
    margin-bottom: 0.5rem;
}

/* Code Example */
.code-example {
    background: #1e293b;
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem 0;
}

.code-example h4 {
    color: #f1f5f9 !important;
    margin-bottom: 1rem;
}

.code-example pre {
    color: #94a3b8;
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
    margin: 0;
    overflow-x: auto;
}

.code-example code {
    color: #e2e8f0;
}

/* Process Steps */
.process-steps {
    margin: 2rem 0;
}

.step {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
}

.step-number {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-right: 1rem;
    flex-shrink: 0;
}

.step-content h4 {
    margin: 0 0 0.5rem 0;
    color: #1e293b;
}

/* Timeline */
.timeline-info {
    margin: 2rem 0;
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: #f8fafc;
    border-radius: 8px;
}

.timeline-date {
    background: #4f46e5;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-right: 1rem;
    white-space: nowrap;
}

.timeline-content h4 {
    margin: 0 0 0.25rem 0;
    color: #1e293b;
}

.timeline-content p {
    margin: 0;
    color: #64748b;
    font-size: 0.9rem;
}

/* Blockquotes */
blockquote {
    border-left: 4px solid #4f46e5;
    background: #f8fafc;
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: #475569;
}

/* Best Practices */
.best-practices {
    background: #f0fdf4;
    border: 1px solid #22c55e;
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem 0;
}

.best-practices h3 {
    color: #16a34a !important;
    margin-bottom: 1rem;
}

.best-practices ul {
    margin: 0;
    padding-left: 1.5rem;
}

.best-practices li {
    margin-bottom: 0.5rem;
    color: #166534;
}

/* Status Comparison Table */
.status-comparison {
    margin: 2rem 0;
    overflow-x: auto;
}

.status-comparison table {
    width: 100%;
    border-collapse: collapse;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.status-comparison th {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    padding: 1rem;
    text-align: left;
    font-weight: 600;
}

.status-comparison td {
    padding: 1rem;
    border-bottom: 1px solid #e2e8f0;
}

.status-regular td:first-child {
    background: #f0fdf4;
    color: #166534;
    font-weight: 600;
}

.status-pending td:first-child {
    background: #fefce8;
    color: #ca8a04;
    font-weight: 600;
}

.status-cancelled td:first-child {
    background: #fef2f2;
    color: #dc2626;
    font-weight: 600;
}

/* Method Cards */
.consultation-methods,
.method-card {
    margin: 2rem 0;
}

.consultation-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.method-card {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.method-card h3 {
    color: #4f46e5;
    margin-bottom: 1rem;
}

.method-card ul {
    padding-left: 1.5rem;
    margin: 0;
}

.method-card li {
    margin-bottom: 0.5rem;
    color: #475569;
}

/* Evolution Timeline */
.process-evolution {
    margin: 2rem 0;
}

.evolution-timeline {
    position: relative;
    padding-left: 2rem;
}

.evolution-timeline::before {
    content: '';
    position: absolute;
    left: 1rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, #4f46e5, #7c3aed);
}

.evolution-step {
    position: relative;
    margin-bottom: 2rem;
}

.evolution-step::before {
    content: '';
    position: absolute;
    left: -1.75rem;
    top: 0.5rem;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #4f46e5;
}

.year {
    display: inline-block;
    background: #4f46e5;
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.evolution-content h4 {
    margin: 0 0 0.5rem 0;
    color: #1e293b;
}

/* Requirements Matrix */
.requirements-matrix {
    margin: 2rem 0;
}

.requirements-matrix table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.requirements-matrix th,
.requirements-matrix td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
    vertical-align: top;
}

.requirements-matrix th {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    font-weight: 600;
}

/* Legal Framework */
.legal-framework {
    margin: 2rem 0;
}

.law-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.law-card {
    background: #fef2f2;
    border: 1px solid #fca5a5;
    border-radius: 12px;
    padding: 1.5rem;
}

.law-card h4 {
    color: #dc2626 !important;
    margin-bottom: 0.75rem;
}

/* Consequences Table */
.consequences-table {
    margin: 2rem 0;
    overflow-x: auto;
}

.consequences-table table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.consequences-table th,
.consequences-table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.consequences-table th {
    background: linear-gradient(135deg, #dc2626 0%, #b91c1c 100%);
    color: white;
}

.severity-high {
    background: #fef2f2;
}

.severity-medium {
    background: #fefce8;
}

.severity-low {
    background: #f0fdf4;
}

/* Practice Cards */
.best-practices-legal {
    margin: 2rem 0;
}

.practice-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
}

.practice-card {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.practice-card h4 {
    color: #4f46e5 !important;
    margin-bottom: 1rem;
}

.practice-card ul {
    padding-left: 1.5rem;
    margin: 0;
}

.practice-card li {
    margin-bottom: 0.5rem;
    color: #475569;
}

/* Ethics Principles */
.ethical-guidelines {
    margin: 2rem 0;
}

.ethics-principles {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.principle {
    display: flex;
    align-items: flex-start;
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.principle-icon {
    font-size: 2rem;
    margin-right: 1rem;
    flex-shrink: 0;
}

.principle-content h4 {
    margin: 0 0 0.5rem 0;
    color: #1e293b;
}

.principle-content p {
    margin: 0;
    color: #64748b;
    font-size: 0.9rem;
}

/* Compliance Checklist */
.compliance-checklist {
    margin: 2rem 0;
}

.checklist {
    background: #f8fafc;
    border-radius: 12px;
    padding: 2rem;
}

.checkbox-item {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    cursor: pointer;
    font-size: 0.95rem;
    color: #475569;
}

.checkbox-item input[type="checkbox"] {
    display: none;
}

.checkmark {
    display: inline-block;
    width: 20px;
    height: 20px;
    background: #22c55e;
    color: white;
    text-align: center;
    line-height: 20px;
    border-radius: 4px;
    margin-right: 0.75rem;
    font-weight: bold;
    font-size: 0.8rem;
}

/* Final Recommendations */
.final-recommendations {
    margin: 2rem 0;
}

.recommendation-list {
    margin-top: 1.5rem;
}

.recommendation-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    background: #f8fafc;
    padding: 1.5rem;
    border-radius: 12px;
}

.rec-number {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 0.9rem;
    margin-right: 1rem;
    flex-shrink: 0;
}

.rec-content h4 {
    margin: 0 0 0.5rem 0;
    color: #1e293b;
}

.rec-content p {
    margin: 0;
    color: #64748b;
}

/* Call to Action */
.call-to-action {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    color: white;
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    margin: 2rem 0;
}

.call-to-action h3 {
    color: white !important;
    margin-bottom: 1rem;
}

.call-to-action p {
    color: rgba(255,255,255,0.9) !important;
    margin-bottom: 2rem;
}

.action-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-button {
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.cta-button.primary {
    background: white;
    color: #4f46e5;
}

.cta-button.primary:hover {
    background: #f1f5f9;
    transform: translateY(-2px);
}

.cta-button.secondary {
    background: rgba(255,255,255,0.2);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
}

.cta-button.secondary:hover {
    background: rgba(255,255,255,0.3);
    transform: translateY(-2px);
}

/* Final Disclaimer */
.final-disclaimer {
    background: #fef3c7;
    border: 1px solid #f59e0b;
    border-radius: 12px;
    padding: 1.5rem;
    margin: 2rem 0;
    text-align: center;
}

/* External Sources */
.external-sources {
    margin: 2rem 0;
}

.sources-list {
    display: grid;
    gap: 1.5rem;
    margin-top: 1rem;
}

.source-item {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

.source-item h4 {
    color: #4f46e5 !important;
    margin-bottom: 0.75rem;
}

.source-item small {
    color: #64748b;
    font-style: italic;
}

/* Author Bio */
.author-bio {
    background: #f8fafc;
    border-radius: 16px;
    padding: 2rem;
    margin: 3rem 0 2rem 0;
    border: 1px solid #e2e8f0;
}

.author-info h3 {
    color: #1e293b !important;
    margin-bottom: 1rem;
}

/* Article Navigation */
.article-navigation {
    padding: 2rem;
    border-top: 1px solid #e2e8f0;
    background: #f8fafc;
}

.nav-links {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

.nav-link {
    padding: 1rem 1.5rem;
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    text-decoration: none;
    color: #4f46e5;
    font-weight: 600;
    transition: all 0.3s ease;
}

.nav-link:hover {
    background: #4f46e5;
    color: white;
    transform: translateY(-2px);
}

/* App Features */
.mobile-apps-info,
.app-features {
    background: #f0f9ff;
    border: 1px solid #0ea5e9;
    border-radius: 12px;
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.app-features h4 {
    color: #0369a1 !important;
    margin-bottom: 1rem;
}

.app-features ul {
    padding-left: 1.5rem;
    margin: 0;
}

.app-features li {
    margin-bottom: 0.5rem;
    color: #1e40af;
}

/* Case Details */
.case-details {
    margin-top: 1rem;
}

.case-details p {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: #64748b;
}

.case-details strong {
    color: #1e293b;
}

/* Responsive Design */
@media (max-width: 768px) {
    .article-header h1 {
        font-size: 2rem;
    }

    .article-meta {
        flex-direction: column;
        gap: 0.5rem;
    }

    .table-of-contents ul {
        columns: 1;
    }

    .use-cases-grid,
    .special-cases-grid,
    .takeaway-grid {
        grid-template-columns: 1fr;
    }

    .consultation-methods {
        grid-template-columns: 1fr;
    }

    .law-grid,
    .practice-cards,
    .ethics-principles {
        grid-template-columns: 1fr;
    }

    .action-buttons {
        flex-direction: column;
        align-items: center;
    }

    .nav-links {
        flex-direction: column;
    }

    .step {
        flex-direction: column;
        text-align: center;
    }

    .step-number {
        margin: 0 auto 1rem auto;
    }

    .recommendation-item,
    .principle {
        flex-direction: column;
        text-align: center;
    }

    .rec-number,
    .principle-icon {
        margin: 0 auto 1rem auto;
    }

    .timeline-item {
        flex-direction: column;
        text-align: center;
    }

    .timeline-date {
        margin: 0 auto 1rem auto;
    }
}

@media (max-width: 480px) {
    .article-section {
        padding: 2rem 0;
    }

    .article-section-content {
        padding: 1.5rem;
    }

    .table-of-contents {
        padding: 1.5rem;
    }

    .article-header {
        padding: 2rem 1.5rem;
    }

    .article-header h1 {
        font-size: 1.75rem;
    }
}

/* Collapsible Article Sections */
.collapsible-section {
    margin-bottom: 2rem;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    overflow: hidden;
}

.collapsible-header {
    background: var(--color-surface);
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
    border-bottom: 1px solid var(--color-border);
}

.collapsible-header:hover {
    background: rgba(var(--color-primary-rgb), 0.05);
}

.collapsible-header h2 {
    margin: 0;
    font-size: 1.25rem;
    color: var(--color-text);
}

.collapsible-toggle {
    font-size: 1.5rem;
    color: var(--color-primary);
    transition: transform 0.3s ease;
    user-select: none;
}

.collapsible-toggle.expanded {
    transform: rotate(45deg);
}

.collapsible-content {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.collapsible-content.expanded {
    max-height: 10000px;
    padding: 1.5rem;
}

.collapsible-content .article-section-content {
    padding: 0;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background-color: var(--color-teal-500);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 1000;
}

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

.back-to-top:hover {
    background-color: var(--color-teal-600);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.back-to-top:active {
    transform: translateY(1px);
}

.back-to-top svg {
    width: 1.5rem;
    height: 1.5rem;
}

@media (max-width: 768px) {
    .back-to-top {
        width: 2.5rem;
        height: 2.5rem;
        right: 1rem;
        bottom: 1rem;
    }
    
    .back-to-top svg {
        width: 1.25rem;
        height: 1.25rem;
    }
}
.back-to-top-btn {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--color-primary);
    color: var(--color-btn-primary-text);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    opacity: 0;
    visibility: hidden;
/* Related Articles Section */
.related-articles {
    margin: 3rem 0 2rem 0;
    padding: 2rem;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: 16px;
    border: 1px solid #e2e8f0;
}

.related-articles h2 {
    color: #1e293b !important;
    font-size: 1.8rem;
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
}

.related-articles h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    border-radius: 2px;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.related-card {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.related-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    border-color: #4f46e5;
}

.related-card h3 {
    margin: 0 0 1rem 0;
    font-size: 1.1rem;
    line-height: 1.4;
}

.related-card h3 a {
    color: #1e293b !important;
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}

.related-card h3 a:hover {
    color: #4f46e5 !important;
    border-bottom-color: #4f46e5;
}

.related-card p {
    color: #64748b !important;
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
}

.related-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
    padding: 2rem;
    background: white;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
}

.related-links a {
    color: #4f46e5;
    text-decoration: none;
    font-weight: 600;
    padding: 1rem 1.5rem;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    transition: all 0.3s ease;
    background: #f8fafc;
}

.related-links a:hover {
    background: #4f46e5;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

@media (max-width: 768px) {
    .related-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .related-articles {
        padding: 1.5rem;
        margin: 2rem 0;
    }

    .related-articles h2 {
        font-size: 1.5rem;
    }

    .related-links {
        padding: 1.5rem;
    }

    .related-links a {
        text-align: center;
        padding: 1rem;
    }
}

/* Sources Section Enhancement */
.sources-section {
    margin: 3rem 0 2rem 0;
    padding: 2rem;
    background: #f8fafc;
    border-radius: 16px;
    border: 1px solid #e2e8f0;
}

.sources-section h2 {
    color: #1e293b !important;
    font-size: 1.8rem;
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
}

.sources-section h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, #059669 0%, #10b981 100%);
    border-radius: 2px;
}

/* Related Articles Section */
.related-articles {
    margin: 3rem 0 2rem 0;
    padding: 2rem;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border-radius: 16px;
    border: 1px solid #e2e8f0;
}

.related-articles h2 {
    color: #1e293b !important;
    font-size: 1.8rem;
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
}

.related-articles h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    border-radius: 2px;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.related-card {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.related-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
}

.related-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    border-color: #4f46e5;
}

.related-card h3 {
    margin: 0 0 1rem 0;
    font-size: 1.1rem;
    line-height: 1.4;
}

.related-card h3 a {
    color: #1e293b !important;
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: all 0.3s ease;
}

.related-card h3 a:hover {
    color: #4f46e5 !important;
    border-bottom-color: #4f46e5;
}

.related-card p {
    color: #64748b !important;
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
}

.related-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 2rem;
    padding: 2rem;
    background: white;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
}

.related-links a {
    color: #4f46e5;
    text-decoration: none;
    font-weight: 600;
    padding: 1rem 1.5rem;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    transition: all 0.3s ease;
    background: #f8fafc;
}

.related-links a:hover {
    background: #4f46e5;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

@media (max-width: 768px) {
    .related-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .related-articles {
        padding: 1.5rem;
        margin: 2rem 0;
    }

    .related-articles h2 {
        font-size: 1.5rem;
    }

    .related-links {
        padding: 1.5rem;
    }

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 3rem;
    height: 3rem;
    background: var(--color-primary);
    color: var(--color-btn-primary-text);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 0.25rem 1rem rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    transform: translateY(1rem);
    z-index: 1000;
}

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

.back-to-top:hover {
    background: var(--color-primary-hover);
    transform: translateY(-0.125rem);
    box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.3);
}

.back-to-top:active {
    transform: translateY(0);
}

/* Mobile responsiveness for back to top button */
@media (max-width: 768px) {
    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 2.5rem;
        height: 2.5rem;
        font-size: 1rem;
    }
}

/* Enhanced mobile responsiveness */
@media (max-width: 768px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .article-section {
        padding: 1rem 0;
    }

    .table-of-contents {
        margin-bottom: 1.5rem;
    }

    .table-of-contents ul {
        padding-left: 1rem;
    }

    .article-header h1 {
        font-size: var(--font-size-3xl);
        line-height: 1.2;
    }

    .info-table,
    .status-comparison {
        font-size: 0.875rem;
    }

    .info-table th,
    .info-table td,
    .status-comparison th,
    .status-comparison td {
        padding: 0.5rem;
    }

    .related-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .related-item h4 {
        font-size: var(--font-size-lg);
    }

    .highlight-box,
    .warning-box,
    .best-practices {
        margin: 1rem 0;
        padding: 1rem;
    }

    .step-card {
        margin: 1rem 0;
    }

    .algorithm-steps .step-card {
        margin-bottom: 0.75rem;
    }

    .code-example {
        margin: 1rem 0;
    }

    .code-example pre {
        font-size: 0.75rem;
        padding: 0.75rem;
    }

    .blockquote {
        margin: 1rem 0;
        padding-left: 1rem;
    }

    .footer-content {
        text-align: center;
        padding: 1rem;
    }

    .footer-text,
    .footer-disclaimer {
        font-size: 0.875rem;
    }
}

/* Improved mobile menu responsiveness */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .nav-links:not(.mobile-menu) {
        display: none;
    }

    .mobile-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--color-surface);
        z-index: 1001;
        flex-direction: column;
        justify-content: flex-start;
        padding-top: 4rem;
        transition: right 0.3s ease;
        box-shadow: -0.5rem 0 1rem rgba(0, 0, 0, 0.1);
    }

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

    .mobile-menu-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1000;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

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

    .mobile-menu-close {
        position: absolute;
        top: 1rem;
        right: 1rem;
        background: none;
        border: none;
        font-size: 1.5rem;
        color: var(--color-text);
        cursor: pointer;
        width: 2rem;
        height: 2rem;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .mobile-menu .nav-link {
        padding: 1rem 1.5rem;
        border-bottom: 1px solid var(--color-border);
        text-align: left;
        font-size: var(--font-size-lg);
    }

    .mobile-menu .nav-link:first-child {
        border-top: 1px solid var(--color-border);
    }
}

/* Enhanced animations for mobile */
@media (prefers-reduced-motion: no-preference) {
    .back-to-top {
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .mobile-menu {
        transition: right 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .mobile-menu-overlay {
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .back-to-top {
        border: 2px solid var(--color-text);
    }

    .highlight-box,
    .warning-box {
        border: 2px solid currentColor;
    }
}

/* Print styles */
@media print {
    .back-to-top,
    .mobile-menu-toggle,
    .mobile-menu,
    .mobile-menu-overlay {
        display: none !important;
    }

    .article-content {
        max-width: none;
        margin: 0;
        padding: 0;
    }

    .container {
        padding: 0;
        max-width: none;
    }

    .table-of-contents,
    .related-articles,
    .external-sources {
        break-inside: avoid;
    }

    h1, h2, h3, h4, h5, h6 {
        break-after: avoid;
    }

    blockquote {
        border-left: 4px solid #000;
        padding-left: 1rem;
        margin-left: 0;
    }
}

/* Artigos Page Styles */
.hero-section {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(245, 158, 11, 0.1));
    padding: var(--space-48) 0 var(--space-32);
    text-align: center;
    border-bottom: 1px solid rgba(119, 124, 124, 0.2);
}

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text);
    margin-bottom: var(--space-8);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-16);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-meta {
    display: flex;
    justify-content: center;
    gap: var(--space-24);
    flex-wrap: wrap;
}

.meta-item {
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
    background: var(--color-surface);
    padding: var(--space-6) var(--space-12);
    border-radius: var(--radius-base);
    border: 1px solid var(--color-card-border);
}

.categories-nav {
    display: flex;
    justify-content: center;
    gap: var(--space-8);
    margin-bottom: var(--space-32);
    flex-wrap: wrap;
    padding: var(--space-16) 0;
    border-bottom: 1px solid rgba(119, 124, 124, 0.2);
}

.category-btn {
    background: transparent;
    border: 1px solid var(--color-card-border);
    color: var(--color-text);
    padding: var(--space-8) var(--space-16);
    border-radius: var(--radius-full);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--duration-fast) var(--ease-standard);
}

.category-btn:hover {
    background: rgba(119, 124, 124, 0.12);
    border-color: var(--color-border);
}

.category-btn.active {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-btn-primary-text);
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-24);
    margin-bottom: var(--space-48);
}

.article-card {
    background: var(--color-surface);
    border: 1px solid var(--color-card-border);
    border-radius: var(--radius-lg);
    padding: var(--space-24);
    transition: all var(--duration-normal) var(--ease-standard);
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
}

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

.card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-12);
    margin-bottom: var(--space-16);
}

.article-icon {
    font-size: var(--font-size-2xl);
    opacity: 0.8;
    flex-shrink: 0;
}

.article-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    line-height: var(--line-height-tight);
    margin: 0;
}

.article-description {
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    margin-bottom: var(--space-16);
    flex-grow: 1;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    gap: var(--space-8);
    margin-bottom: var(--space-16);
    flex-wrap: wrap;
}

.reading-time, .article-date {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    background: rgba(59, 130, 246, 0.1);
    padding: var(--space-4) var(--space-8);
    border-radius: var(--radius-sm);
}

.article-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-8);
    color: var(--color-primary);
    text-decoration: none;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    padding: var(--space-12) var(--space-16);
    border: 1px solid var(--color-primary);
    border-radius: var(--radius-base);
    transition: all var(--duration-fast) var(--ease-standard);
    margin-top: auto;
}

.article-link:hover {
    background: var(--color-primary);
    color: var(--color-btn-primary-text);
    transform: translateX(2px);
}

.arrow-icon {
    transition: transform var(--duration-fast) var(--ease-standard);
}

.article-link:hover .arrow-icon {
    transform: translateX(2px);
}

.articles-summary {
    text-align: center;
    padding: var(--space-32) 0;
    border-top: 1px solid rgba(119, 124, 124, 0.2);
}

.summary-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-32);
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--space-4);
}

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

/* Mobile Responsiveness for Artigos */
@media (max-width: 768px) {
    .hero-section {
        padding: var(--space-32) 0 var(--space-24);
    }

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

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

    .hero-meta {
        flex-direction: column;
        align-items: center;
        gap: var(--space-8);
    }

    .categories-nav {
        gap: var(--space-6);
        padding: var(--space-12) 0;
    }

    .category-btn {
        padding: var(--space-6) var(--space-12);
        font-size: var(--font-size-sm);
    }

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

    .article-meta {
        flex-direction: column;
        gap: var(--space-6);
    }

    .summary-stats {
        flex-direction: column;
        gap: var(--space-16);
    }
}

@media (max-width: 480px) {
    .hero-section {
        padding: var(--space-24) 0 var(--space-16);
    }

    .hero-title {
        font-size: var(--font-size-2xl);
    }

    .article-card {
        padding: var(--space-16);
    }

/* About Hero Section */
.about-hero {
  background: linear-gradient(135deg, rgba(var(--color-teal-500-rgb), 0.08) 0%, rgba(var(--color-brown-600-rgb), 0.04) 100%);
  padding: var(--space-64) 0;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}

.about-hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.about-hero-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  margin-bottom: var(--space-16);
  letter-spacing: var(--letter-spacing-tight);
  line-height: var(--line-height-tight);
}

.about-hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-muted);
  line-height: var(--line-height-normal);
  max-width: 600px;
  margin: 0 auto;
}

/* Mission Grid */
.mission-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-24);
  margin-top: var(--space-32);
}

.mission-card {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: var(--space-24);
  text-align: center;
  transition: all var(--duration-normal) var(--ease-standard);
  position: relative;
  overflow: hidden;
}

.mission-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--duration-normal) var(--ease-standard);
}

.mission-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(var(--color-teal-500-rgb), 0.3);
}

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

.mission-icon {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-16);
  display: block;
}

.mission-card h3 {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-12);
  color: var(--color-text);
}

.mission-card p {
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Steps Container */
.steps-container {
  display: grid;
  gap: var(--space-20);
  margin-top: var(--space-24);
}

.step {
  display: flex;
  gap: var(--space-20);
  align-items: flex-start;
}

.step-number {
  background: var(--color-primary);
  color: var(--color-btn-primary-text);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  font-size: var(--font-size-lg);
  flex-shrink: 0;
}

.step-content h4 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-8);
  color: var(--color-text);
}

.step-content p {
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Ethics Content */
.ethics-content {
  margin-top: var(--space-24);
}

.ethics-highlight {
  background: rgba(var(--color-teal-500-rgb), 0.05);
  border: 1px solid rgba(var(--color-teal-500-rgb), 0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-20);
  margin-bottom: var(--space-16);
  position: relative;
}

.ethics-highlight::before {
  content: '🔒';
  position: absolute;
  top: var(--space-12);
  left: var(--space-16);
  font-size: var(--font-size-lg);
}

.ethics-highlight p {
  color: var(--color-text);
  line-height: 1.6;
  padding-left: var(--space-24);
}

.disclaimer-box {
  background: rgba(var(--color-orange-500-rgb), 0.1);
  border: 1px solid rgba(var(--color-orange-500-rgb), 0.3);
  border-radius: var(--radius-lg);
  padding: var(--space-20);
  text-align: center;
}

.disclaimer-box h4 {
  color: var(--color-warning);
  margin-bottom: var(--space-12);
  font-size: var(--font-size-lg);
}

.disclaimer-box p {
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-20);
  margin-top: var(--space-24);
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  padding: var(--space-20);
  transition: all var(--duration-normal) var(--ease-standard);
}

.feature-card:hover {
  border-color: rgba(var(--color-teal-500-rgb), 0.3);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.feature-card h4 {
  color: var(--color-primary);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-12);
}

.feature-card p {
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Stats Container */
.stats-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-24);
  margin-top: var(--space-32);
  text-align: center;
}

.stat-item {
  padding: var(--space-20);
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  transition: all var(--duration-normal) var(--ease-standard);
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(var(--color-teal-500-rgb), 0.3);
}

.stat-number {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
  margin-bottom: var(--space-8);
}

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

/* CTA Section */
.cta-section {
  margin-top: var(--space-48);
}

.cta-box {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
  color: var(--color-btn-primary-text);
  padding: var(--space-48);
  border-radius: var(--radius-2xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  transform: rotate(45deg);
  transition: transform var(--duration-slow) var(--ease-standard);
  opacity: 0;
}

.cta-box:hover::before {
  opacity: 1;
  transform: rotate(45deg) translate(20px, 20px);
}

.cta-box h3 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-12);
  position: relative;
  z-index: 1;
}

.cta-box p {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-24);
  opacity: 0.9;
  position: relative;
  z-index: 1;
}

.cta-buttons {
  display: flex;
  gap: var(--space-16);
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* Enhanced Mobile Responsiveness */
@media (max-width: 768px) {
  .mission-grid {
    grid-template-columns: 1fr;
    gap: var(--space-20);
  }

  .steps-container {
    gap: var(--space-16);
  }

  .step {
    flex-direction: column;
    text-align: center;
    gap: var(--space-12);
  }

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

  .stats-container {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-16);
  }

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

  .cta-box {
    padding: var(--space-32);
  }

  .about-hero {
    padding: var(--space-48) 0;
  }

  .about-hero-title {
    font-size: var(--font-size-3xl);
  }

  .about-hero-subtitle {
    font-size: var(--font-size-lg);
  }
}

@media (max-width: 480px) {
  .stats-container {
    grid-template-columns: 1fr;
  }

  .cta-buttons .btn {
    width: 100%;
    max-width: 250px;
  }
}

/* Improved Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

.about-section {
  animation: slideUp var(--duration-slow) var(--ease-out);
  animation-fill-mode: both;
}

.about-section:nth-child(1) { animation-delay: 0.1s; }
.about-section:nth-child(2) { animation-delay: 0.2s; }
.about-section:nth-child(3) { animation-delay: 0.3s; }
.about-section:nth-child(4) { animation-delay: 0.4s; }
.about-section:nth-child(5) { animation-delay: 0.5s; }
.about-section:nth-child(6) { animation-delay: 0.6s; }

/* Enhanced Focus States for Accessibility */
.nav-link:focus-visible,
.btn:focus-visible,
.form-input:focus-visible,
.form-select:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Dark Mode Adjustments for New Sections */
@media (prefers-color-scheme: dark) {
  .cta-box {
    background: linear-gradient(135deg, var(--color-teal-300) 0%, var(--color-teal-400) 100%);
  }

  .ethics-highlight {
    background: rgba(var(--color-teal-300-rgb), 0.1);
    border-color: rgba(var(--color-teal-300-rgb), 0.3);
  }

  .disclaimer-box {
    background: rgba(var(--color-orange-400-rgb), 0.15);
    border-color: rgba(var(--color-orange-400-rgb), 0.4);
  }
}

[data-color-scheme="dark"] .cta-box {
  background: linear-gradient(135deg, var(--color-teal-300) 0%, var(--color-teal-400) 100%);
}

[data-color-scheme="dark"] .ethics-highlight {
  background: rgba(var(--color-teal-300-rgb), 0.1);
  border-color: rgba(var(--color-teal-300-rgb), 0.3);
}

[data-color-scheme="dark"] .disclaimer-box {
  background: rgba(var(--color-orange-400-rgb), 0.15);
  border-color: rgba(var(--color-orange-400-rgb), 0.4);
}

[data-color-scheme="light"] .cta-box {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-hover) 100%);
}

[data-color-scheme="light"] .ethics-highlight {
  background: rgba(var(--color-teal-500-rgb), 0.05);
  border-color: rgba(var(--color-teal-500-rgb), 0.2);
}

[data-color-scheme="light"] .disclaimer-box {
  background: rgba(var(--color-orange-500-rgb), 0.1);
  border-color: rgba(var(--color-orange-500-rgb), 0.3);
}
}