/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f8f9fa;
}

/* Navigation */
.navbar {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: white;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-link {
  color: white;
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: 5px;
  transition: background-color 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
  background-color: rgba(255,255,255,0.2);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 5rem 2rem;
  text-align: center;
}

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

.hero h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.hero-subtitle {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

/* CTA Buttons */
.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 1rem 2rem;
  font-size: 1.1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}

.btn-primary {
  background-color: #ff6b6b;
  color: white;
}

.btn-primary:hover {
  background-color: #ff5252;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(255,107,107,0.4);
}

.btn-secondary {
  background-color: transparent;
  color: white;
  border: 2px solid white;
}

.btn-secondary:hover {
  background-color: white;
  color: #667eea;
}

/* Content Sections */
.content-section {
  padding: 4rem 0;
  background-color: white;
}

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

.content-section h2 {
  font-size: 2rem;
  color: #2c3e50;
  margin-bottom: 1rem;
  margin-top: 2rem;
}

.content-section h2:first-child {
  margin-top: 0;
}

.content-section h3 {
  font-size: 1.5rem;
  color: #34495e;
  margin-bottom: 0.5rem;
  margin-top: 1.5rem;
}

.content-section p {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 1rem;
  color: #555;
}

.content-section ul {
  margin: 1rem 0;
  padding-left: 2rem;
}

.content-section li {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 0.5rem;
  color: #555;
}

.content-section a {
  color: #667eea;
  text-decoration: none;
  font-weight: 600;
}

.content-section a:hover {
  color: #764ba2;
  text-decoration: underline;
}

/* Download Section */
.download-section {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  padding: 3rem;
  border-radius: 15px;
  margin-top: 3rem;
  text-align: center;
}

.download-section h2 {
  color: white;
  margin-bottom: 1rem;
}

.download-section p {
  color: white;
  font-size: 1.2rem;
}

/* Footer */
.footer {
  background-color: #2c3e50;
  color: white;
  text-align: center;
  padding: 2rem 0;
  margin-top: 4rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-container {
    flex-direction: column;
    gap: 1rem;
    padding: 0 1rem;
  }

  .nav-menu {
    gap: 1rem;
  }

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

  .hero-subtitle {
    font-size: 1.1rem;
  }

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

  .btn {
    width: 100%;
    max-width: 300px;
  }

  .container {
    padding: 0 1rem;
  }

  .content-section h2 {
    font-size: 1.5rem;
  }

  .content-section h3 {
    font-size: 1.3rem;
  }

  .download-section {
    padding: 2rem 1rem;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 3rem 1rem;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .content-section {
    padding: 2rem 0;
  }

  .content-section p,
  .content-section li {
    font-size: 1rem;
  }
}