body {
  margin: 0;
  font-family: "Poppins", sans-serif;
  background: #f5f5f5;
  color: #111;
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: black;
  padding: 1rem 2rem;
  color: white;
}

.logo {
  font-weight: 700;
  font-size: 1.4rem;
  color: white;
}

.nav-links a {
  margin-left: 1rem;
  text-decoration: none;
  color: white;
  font-weight: 500;
  transition: 0.3s;
}

.nav-links a:hover {
  color: #ffeb3b;
}

/* Main Container */
main.container {
  max-width: 1100px;
  margin: 2rem auto;
  text-align: center;
  padding: 0 1rem;
}

h1 {
  margin-bottom: 2rem;
  font-size: 2rem;
  color: #111;
}

/* Puzzle Grid */
.puzzle-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.puzzle-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: white;
  border-radius: 12px;
  text-decoration: none;
  padding: 1.5rem;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
  transition: transform 0.25s, box-shadow 0.25s;
  color: #111;
  font-weight: 600;
}

.puzzle-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.puzzle-card small {
  color: #444;
  font-weight: 500;
  margin-top: 0.4rem;
  font-size: 0.9rem;
}

/* Footer */
footer {
  background: black;
  color: white;
  text-align: center;
  padding: 1rem 0;
  margin-top: 3rem;
}

/* Responsive */
@media (max-width: 600px) {
  h1 {
    font-size: 1.6rem;
  }

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

  .nav-links {
    margin-top: 0.5rem;
  }

  .nav-links a {
    margin: 0 0.5rem;
  }

  .puzzle-card {
    padding: 1.2rem;
  }
}