/* 
 * Gov.br Design System - Importação Direta
 * Seguindo rigorosamente as especificações oficiais do padrão digital do governo brasileiro
 * Baseado em design-tokens.json e guia_visual_govbr.md
 */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  color: #333333;
  background-color: #FFFFFF;
}

/* Design Tokens - Cores Gov.br */
:root {
  /* Cores Primárias */
  --gov-primary: #0059C8;
  --gov-white: #FFFFFF;
  --gov-gray: #333333;
  --gov-success: #38B44A;
  
  /* Cores Secundárias */
  --gov-gray-light: #F5F5F5;
  --gov-gray-medium: #E0E0E0;
  --gov-gray-dark: #666666;
  --gov-blue-light: #E6F2FF;
  
  /* Tipografia */
  --font-size-xs: 12px;
  --font-size-sm: 14px;
  --font-size-base: 16px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-2xl: 30px;
  --font-size-3xl: 36px;
  
  /* Espaçamento (Sistema 4pt) */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;
  --spacing-3xl: 64px;
  --spacing-4xl: 96px;
  
  /* Breakpoints */
  --breakpoint-tablet: 768px;
  --breakpoint-desktop: 1024px;
}

/* Barra de Identidade Visual Gov.br */
.gov-identity-bar {
  background-color: var(--gov-primary);
  height: 40px;
  width: 100%;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-md);
}

.gov-identity-bar img {
  height: 24px;
  width: auto;
  filter: brightness(0) invert(1);
}

/* Skip Links para Acessibilidade */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--gov-primary);
  color: var(--gov-white);
  padding: 8px 16px;
  text-decoration: none;
  z-index: 1001;
  border-radius: 4px;
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.skip-link:focus {
  top: 6px;
}

/* Layout Principal */
.main-container {
  margin-top: 40px; /* Espaço para barra fixa */
  min-height: 100vh;
}

/* Header/Navigation */
.header {
  background: var(--gov-white);
  box-shadow: 0 2px 4px rgba(0, 89, 200, 0.1);
  position: sticky;
  top: 40px;
  z-index: 999;
}

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

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

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.nav-menu a {
  text-decoration: none;
  color: var(--gov-gray);
  font-weight: 500;
  font-size: var(--font-size-base);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 4px;
  transition: all 0.2s ease;
}

.nav-menu a:hover,
.nav-menu a:focus {
  background-color: var(--gov-blue-light);
  color: var(--gov-primary);
  outline: 2px solid var(--gov-primary);
  outline-offset: 2px;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--gov-primary) 0%, #003d99 100%);
  color: var(--gov-white);
  padding: var(--spacing-4xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  opacity: 0.3;
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xl);
  opacity: 0.95;
  font-weight: 400;
}

.hero-highlight {
  background: var(--gov-success);
  color: var(--gov-white);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: 6px;
  display: inline-block;
  font-weight: 600;
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xl);
}

/* Buttons - Padrão Gov.br */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: 600;
  text-decoration: none;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 44px; /* Padrão de acessibilidade para touch */
  line-height: 1.4;
  text-align: center;
}

.btn-primary {
  background-color: var(--gov-primary);
  color: var(--gov-white);
  box-shadow: 0 2px 4px rgba(0, 89, 200, 0.2);
}

.btn-primary:hover,
.btn-primary:focus {
  background-color: #0041a8;
  box-shadow: 0 4px 8px rgba(0, 89, 200, 0.3);
  outline: 2px solid var(--gov-white);
  outline-offset: 2px;
}

.btn-secondary {
  background-color: transparent;
  color: var(--gov-primary);
  border: 2px solid var(--gov-primary);
}

.btn-secondary:hover,
.btn-secondary:focus {
  background-color: var(--gov-primary);
  color: var(--gov-white);
  outline: 2px solid var(--gov-primary);
  outline-offset: 2px;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--gov-gray);
  text-align: center;
  margin-bottom: var(--spacing-xl);
  line-height: 1.3;
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--gov-gray-dark);
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  line-height: 1.5;
}

/* Cards */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.card {
  background: var(--gov-white);
  border-radius: 8px;
  padding: var(--spacing-xl);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--gov-gray-medium);
  transition: all 0.2s ease;
}

.card:hover {
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  transform: translateY(-2px);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--gov-primary);
  margin-bottom: var(--spacing-md);
}

.card-text {
  font-size: var(--font-size-base);
  color: var(--gov-gray);
  line-height: 1.6;
}

/* Credibilidade Governamental */
.gov-credibility {
  background: var(--gov-gray-light);
  padding: var(--spacing-3xl) 0;
}

.logos-container {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
}

.gov-logo {
  height: 60px;
  width: auto;
  opacity: 0.8;
  transition: opacity 0.2s ease;
}

.gov-logo:hover {
  opacity: 1;
}

/* Benefícios */
.benefits {
  background: var(--gov-white);
}

.benefit-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.benefit-icon {
  width: 24px;
  height: 24px;
  background: var(--gov-success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.benefit-icon::after {
  content: '✓';
  color: var(--gov-white);
  font-size: 14px;
  font-weight: bold;
}

/* WhatsApp Flutuante */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
  background: #25D366;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
  transition: all 0.2s ease;
  text-decoration: none;
}

.whatsapp-float:hover {
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.6);
}

.whatsapp-float svg {
  width: 32px;
  height: 32px;
  fill: var(--gov-white);
}

/* Footer */
.footer {
  background: var(--gov-gray);
  color: var(--gov-white);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
}

.footer-section h3 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--gov-white);
}

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

.footer-links a {
  color: #CCCCCC;
  text-decoration: none;
  font-size: var(--font-size-sm);
  display: block;
  padding: var(--spacing-xs) 0;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--gov-white);
}

.footer-bottom {
  border-top: 1px solid #555555;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: #CCCCCC;
  font-size: var(--font-size-sm);
}

/* Responsive Design */
@media (max-width: 768px) {
  .header-content {
    flex-direction: column;
    height: auto;
    padding: var(--spacing-md);
  }
  
  .nav-menu {
    margin-top: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
  }
  
  .hero-title {
    font-size: var(--font-size-2xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-lg);
  }
  
  .cards-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .logos-container {
    gap: var(--spacing-md);
  }
  
  .gov-logo {
    height: 40px;
  }
  
  .whatsapp-float {
    bottom: 16px;
    right: 16px;
    width: 50px;
    height: 50px;
  }
  
  .whatsapp-float svg {
    width: 24px;
    height: 24px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .hero {
    padding: var(--spacing-2xl) 0;
  }
  
  .section {
    padding: var(--spacing-2xl) 0;
  }
  
  .btn {
    width: 100%;
    margin-bottom: var(--spacing-sm);
  }
}

/* Focus Management */
*:focus {
  outline: 2px solid var(--gov-primary);
  outline-offset: 2px;
}

/* Acessibilidade - Padrão eMAG + WCAG AA */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Contraste Alto */
@media (prefers-contrast: high) {
  .btn-primary {
    background-color: #000000;
    border: 2px solid #000000;
  }
  
  .hero {
    background: #000000;
  }
}

/* Print Styles */
@media print {
  .gov-identity-bar,
  .header,
  .whatsapp-float,
  .btn {
    display: none;
  }
  
  .main-container {
    margin-top: 0;
  }
  
  .hero {
    background: #FFFFFF;
    color: #000000;
  }
}