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

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  color: #333;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

header {
  background: #fff;
  padding: 1rem 0;
  border-bottom: 1px solid #eee;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: bold;
  color: #2c3e50;
}

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

.nav-links a {
  text-decoration: none;
  color: #333;
}

.nav-links a:hover {
  color: #3498db;
}

.auth-links {
  display: flex;
  gap: 1rem;
}

.auth-links a {
  text-decoration: none;
  color: #333;
  padding: 8px 16px;
  border: 1px solid #ddd;
  border-radius: 4px;
}

.auth-links .login {
  background: transparent;
}

.auth-links .signup {
  background: #3498db;
  color: white;
  border-color: #3498db;
}

.auth-links a:hover {
  opacity: 0.8;
}

.mobile-menu {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.mobile-menu span {
  width: 25px;
  height: 3px;
  background: #333;
  margin: 3px 0;
}

.nav-content {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.hero {
  background: #f8f9fa;
  padding: 4rem 0;
  text-align: center;
}

.hero h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  color: #2c3e50;
}

.hero p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: #666;
}

.btn {
  display: inline-block;
  background: #3498db;
  color: white;
  padding: 12px 30px;
  text-decoration: none;
  border-radius: 5px;
  margin: 0 10px;
}

.btn:hover {
  background: #2980b9;
}

.btn-secondary {
  background: transparent;
  color: #3498db;
  border: 2px solid #3498db;
}

.btn-secondary:hover {
  background: #3498db;
  color: white;
}

.features {
  padding: 4rem 0;
}

.features h2 {
  text-align: center;
  margin-bottom: 3rem;
  font-size: 2rem;
  color: #2c3e50;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature {
  text-align: center;
  padding: 2rem;
  background: #fff;
  border: 1px solid #eee;
  border-radius: 8px;
}

.feature h3 {
  margin-bottom: 1rem;
  color: #2c3e50;
}

.stats {
  background: #2c3e50;
  color: white;
  padding: 3rem 0;
  text-align: center;
}

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

.stat h3 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

footer {
  background: #34495e;
  color: white;
  text-align: center;
  padding: 2rem 0;
}

@media (max-width: 768px) {
  .nav-content {
    display: none;
  }

  .mobile-menu {
    display: flex;
  }

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

  .btn {
    display: block;
    margin: 10px 0;
  }
}