:root {
  --primary: #ff7f00;
  --secondary: #ffb600;
  --dark: #333333;
  --light: #f8f9fa;
  --accent: #4a90e2;
  --gray: #6c757d;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Poppins", sans-serif;
}

body {
  color: var(--dark);
  background-color: var(--light);
  line-height: 1.6;
}

header {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  padding: 1rem 2rem;
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  align-items: center;
}

.logo i {
  margin-right: 10px;
}

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

nav li {
  margin-left: 2rem;
}

nav a {
  color: white;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
}

nav a:hover {
  color: #ffd700;
}

.hero {
  background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)),
    url("https://images.unsplash.com/photo-1550745165-9bc0b252726f?ixlib=rb-4.0.3&auto=format&fit=crop&w=2000&q=80");
  background-size: cover;
  background-position: center;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: white;
  padding-top: 80px;
}

.hero-content {
  max-width: 800px;
  padding: 2rem;
}

.hero h1 {
  font-size: 3.5rem;
  margin-bottom: 1rem;
  animation: fadeInUp 1s ease;
}

.hero p {
  font-size: 1.5rem;
  margin-bottom: 2rem;
  animation: fadeInUp 1.5s ease;
}

.btn {
  display: inline-block;
  background: var(--primary);
  color: white;
  padding: 0.8rem 2rem;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  animation: fadeInUp 2s ease;
}

.btn:hover {
  background: var(--secondary);
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

section {
  padding: 5rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2 {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 1rem;
}

.section-title p {
  color: var(--gray);
  max-width: 700px;
  margin: 0 auto;
}

.features {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
}

.feature-card {
  background: white;
  border-radius: 10px;
  overflow: hidden;
  width: 300px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-10px);
}

.feature-icon {
  background: var(--primary);
  color: white;
  font-size: 2.5rem;
  padding: 1.5rem;
  text-align: center;
}

.feature-content {
  padding: 1.5rem;
}

.feature-content h3 {
  margin-bottom: 1rem;
  color: var(--dark);
}

.game-showcase {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  text-align: center;
}

.game-showcase .section-title h2 {
  color: white;
}

.game-showcase .section-title p {
  color: rgba(255, 255, 255, 0.9);
}

.game-demo {
  max-width: 800px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 2rem;
  backdrop-filter: blur(10px);
}

.game-stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 3rem;
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.challenge-section {
  background: var(--light);
}

.challenge-cards {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
}

.challenge-card {
  background: white;
  border-radius: 10px;
  overflow: hidden;
  width: 350px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.challenge-image {
  height: 200px;
  background-size: cover;
  background-position: center;
}

.challenge-content {
  padding: 1.5rem;
}

.challenge-content h3 {
  color: var(--primary);
  margin-bottom: 1rem;
}

footer {
  background: var(--dark);
  color: white;
  padding: 3rem 2rem;
  text-align: center;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin: 2rem 0;
}

.footer-links a {
  color: white;
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.social-icons {
  margin: 2rem 0;
}

.social-icons a {
  color: white;
  font-size: 1.5rem;
  margin: 0 1rem;
  transition: color 0.3s ease;
}

.social-icons a:hover {
  color: var(--secondary);
}

.copyright {
  margin-top: 2rem;
  color: #999;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    text-align: center;
  }

  nav ul {
    margin-top: 1rem;
    flex-wrap: wrap;
    justify-content: center;
  }

  nav li {
    margin: 0.5rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero p {
    font-size: 1.2rem;
  }

  .features,
  .challenge-cards {
    flex-direction: column;
    align-items: center;
  }

  .game-stats {
    flex-direction: column;
    gap: 1rem;
  }

  .footer-links {
    flex-direction: column;
    gap: 1rem;
  }
}