/* Estilos globais */
:root {
  --color-primary: #1e3a8a;
  --color-secondary: #991b1b;
  --color-accent: #f59e0b;
  --color-background: #ffffff;
  --color-text: #1f2937;
  --color-muted: #6b7280;
  --color-border: #e5e7eb;
  --color-card: #f9fafb;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

/* Tema escuro */
.dark-mode {
  --color-primary: #3b82f6;
  --color-secondary: #ef4444;
  --color-accent: #f59e0b;
  --color-background: #111827;
  --color-text: #f9fafb;
  --color-muted: #9ca3af;
  --color-border: #374151;
  --color-card: #1f2937;
}

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-background);
  line-height: 1.6;
  transition: background-color 0.3s, color 0.3s;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  text-decoration: underline;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Cabeçalho */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--color-background);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 4rem;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
}

nav a:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.mobile-menu-button {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
}

/* Hero Section */
.hero {
  background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
  color: white;
  padding: 5rem 0;
  position: relative;
}

.hero-content {
  max-width: 48rem;
}

.hero h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.25rem;
  margin-bottom: 2rem;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 0.375rem;
  transition: all 0.2s;
  cursor: pointer;
}

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

.btn-primary:hover {
  background-color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
}

.btn-outline {
  background-color: transparent;
  border: 1px solid white;
  color: white;
}

.btn-outline:hover {
  background-color: rgba(255, 255, 255, 0.1);
  text-decoration: none;
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: white;
}

.btn-secondary:hover {
  background-color: var(--color-secondary);
  opacity: 0.9;
  text-decoration: none;
}

/* Seções */
section {
  padding: 4rem 0;
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  text-align: center;
}

.section-subtitle {
  font-size: 1.25rem;
  color: var(--color-muted);
  margin-bottom: 3rem;
  text-align: center;
  max-width: 48rem;
  margin-left: auto;
  margin-right: auto;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform 0.2s, box-shadow 0.2s;
}

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

.card-header {
  padding: 1.5rem;
  background-color: rgba(0, 0, 0, 0.03);
  border-bottom: 1px solid var(--color-border);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.card-subtitle {
  font-size: 0.875rem;
  color: var(--color-muted);
}

.card-content {
  padding: 1.5rem;
  flex-grow: 1;
}

.card-footer {
  padding: 1.5rem;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
}

/* Tabs */
.tabs {
  margin-bottom: 2rem;
}

.tab-list {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 1rem;
}

.tab-button {
  padding: 0.75rem 1rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-muted);
  cursor: pointer;
}

.tab-button.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.tab-content {
  display: none;
}

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

/* Listas */
ul.feature-list {
  list-style-position: inside;
  margin-bottom: 1.5rem;
}

ul.feature-list li {
  margin-bottom: 0.5rem;
  display: flex;
  align-items: flex-start;
}

ul.feature-list li::before {
  content: "•";
  color: var(--color-primary);
  font-weight: bold;
  display: inline-block;
  width: 1em;
  margin-right: 0.5em;
}

/* Rodapé */
footer {
  background-color: var(--color-primary);
  color: white;
  padding: 2rem 0;
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.footer-column h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer-column ul {
  list-style: none;
}

.footer-column ul li {
  margin-bottom: 0.5rem;
}

.footer-column a {
  color: rgba(255, 255, 255, 0.8);
}

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

.copyright {
  margin-top: 2rem;
  text-align: center;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
}

/* Responsividade */
@media (max-width: 768px) {
  .desktop-nav {
    display: none;
  }

  .mobile-menu-button {
    display: block;
  }

  .mobile-menu {
    position: fixed;
    top: 4rem;
    left: 0;
    right: 0;
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem;
    display: none;
  }

  .mobile-menu.active {
    display: block;
  }

  .mobile-menu ul {
    flex-direction: column;
    gap: 1rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

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

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

/* Utilitários */
.text-center {
  text-align: center;
}

.mt-4 {
  margin-top: 1rem;
}

.mt-8 {
  margin-top: 2rem;
}

.mb-4 {
  margin-bottom: 1rem;
}

.mb-8 {
  margin-bottom: 2rem;
}

.prose {
  max-width: 65ch;
  margin-left: auto;
  margin-right: auto;
}

.prose p {
  margin-bottom: 1.5rem;
}

.prose h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 1rem;
}

.prose h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

.bg-muted {
  background-color: rgba(0, 0, 0, 0.03);
}

.flex {
  display: flex;
}

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

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

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

.gap-4 {
  gap: 1rem;
}

.w-full {
  width: 100%;
}

.max-w-4xl {
  max-width: 56rem;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}