:root {
  --background: #ffffff;
  --background-alt: #f8f9fa;
  --text: #0f0f0f;
  --text-muted: #6b7280;
  --text-light: #9ca3af;
  --border: #e5e7eb;
  --primary: #111827;
  --accent: #4f46e5;
  --accent-light: #818cf8;
}

/* Base styles */
body {
  font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    'Helvetica Neue', Arial, sans-serif;
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Header styles */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-content {
  height: 3.5rem;
  display: flex;
  align-items: center;
}

.logo-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Hero section */
.hero {
  padding: 8rem 0 10rem;
  text-align: center;
}

.hero-content {
  max-width: 64rem;
  margin: 0 auto;
}

.gradient-text {
  font-size: 3.75rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

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

.hero-subtitle {
  max-width: 36rem;
  margin: 1.5rem auto;
  color: var(--text-muted);
  font-size: 1.25rem;
  line-height: 1.7;
}

/* Features section */
.features {
  padding: 6rem 0;
  text-align: center;
  background: var(--background-alt);
}

.features h2 {
  margin-bottom: 1rem;
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  padding: 2rem 0;
  max-width: 1100px;
  margin: 0 auto;
}

.feature-card {
  padding: 2rem;
  background: var(--background);
  border-radius: 1rem;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
  text-align: left;
}

.feature-card:hover {
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.06);
  transform: translateY(-4px);
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.9375rem;
  margin: 0;
}

/* Science section */
.science-section {
  background: var(--background);
  padding: 6rem 0;
}

.science-header {
  max-width: 58rem;
  margin: 0 auto;
  text-align: center;
  margin-bottom: 3rem;
}

.science-header h2 {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 1rem;
}

.science-header p {
  color: var(--text-muted);
  font-size: 1.125rem;
  max-width: 48rem;
  margin: 0 auto;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

.benefit {
  background: var(--background-alt);
  padding: 2rem;
  border-radius: 1rem;
  transition: all 0.3s ease;
}

.benefit:hover {
  background: var(--background);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04);
}

.benefit h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.benefit p {
  color: var(--text-muted);
  font-size: 0.9375rem;
  margin: 0;
  line-height: 1.6;
}

/* Research quote */
.research-quote {
  max-width: 700px;
  margin: 4rem auto 0;
  padding: 2rem;
  text-align: center;
  font-style: italic;
  color: var(--text-muted);
  font-size: 1.125rem;
  border-left: 3px solid var(--accent);
  background: var(--background-alt);
  border-radius: 0 1rem 1rem 0;
}

/* Download section */
.download-section {
  text-align: center;
  padding: 6rem 0;
  background: var(--background-alt);
}

.download-section h2 {
  margin-bottom: 1rem;
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.download-section p {
  margin-bottom: 2rem;
  color: var(--text-muted);
  font-size: 1.125rem;
}

/* Footer */
.footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  background: var(--background);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-branding {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-branding p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.2s ease;
}

.footer-nav a:hover {
  color: var(--accent);
}

.copyright {
  color: var(--text-light);
  font-size: 0.875rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .gradient-text {
    font-size: 2.5rem;
  }

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

  .container {
    padding: 0 1.5rem;
  }

  .features-grid,
  .benefits-grid {
    grid-template-columns: 1fr;
    padding: 0 1rem;
  }

  .hero {
    padding: 4rem 0 6rem;
  }

  .features h2,
  .science-header h2,
  .download-section h2 {
    font-size: 1.75rem;
  }
}

/* Privacy Policy page specific styles */
.privacy-policy {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
}

.privacy-policy .logo-container {
  margin-bottom: 2rem;
}

.privacy-policy .logo-container img {
  width: 32px;
  height: 32px;
}

.privacy-policy h1 {
  font-size: 2rem;
  margin-bottom: 2rem;
}

.privacy-policy h2 {
  font-size: 1.5rem;
  margin: 2rem 0 1rem;
}

.privacy-policy p {
  margin-bottom: 1rem;
  line-height: 1.6;
}

.privacy-policy ul {
  margin: 1rem 0;
  padding-left: 2rem;
}

.privacy-policy li {
  margin-bottom: 0.5rem;
}

@media (max-width: 768px) {
  .privacy-policy {
    padding: 1.5rem;
  }
}

/* Contact links in privacy policy */
.privacy-policy .back-link {
  display: inline-block;
  margin-top: 20px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.privacy-policy .back-link:hover {
  color: var(--text);
}

/* Separar visualmente os links de contato */
.privacy-policy .contact-links {
  margin: 2rem 0;
  padding: 1rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}