body {
  margin: 0;
  font-family: 'Helvetica Neue', sans-serif;
  background: linear-gradient(135deg, #000066, #660099);
  color: white;
  line-height: 1.6;
  overflow-x: hidden;
}

header {
  text-align: center;
  padding: 40px 20px;
  background: rgba(0, 0, 102, 0.8);
  position: relative;
}

header h1 {
  font-size: 2.5rem;
  margin: 0;
  background: linear-gradient(90deg, #660099, #ff66ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

header p {
  font-size: 1.2rem;
  margin-top: 10px;
}

section {
  padding: 60px 20px;
  position: relative;
  overflow: hidden;
}

section:nth-child(even) {
  background: rgba(0, 0, 51, 0.8);
}

section h2 {
  font-size: 2rem;
  margin-bottom: 20px;
  text-align: center;
  position: relative;
}

section h2::after {
  content: '';
  display: block;
  width: 50px;
  height: 3px;
  background: #ff66ff;
  margin: 10px auto 20px;
}

.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.grid-item {
  background: rgba(255, 255, 255, 0.1);
  padding: 20px;
  border-radius: 10px;
  text-align: center;
  position: relative;
}

.grid-item img {
  width: 100%;
  height: auto;
  border-radius: 10px;
}

.grid-item h3 {
  font-size: 1.2rem;
  margin: 15px 0 10px;
}

button {
  background: #ff66ff;
  border: none;
  color: white;
  padding: 12px 25px;
  font-size: 1rem;
  border-radius: 25px;
  cursor: pointer;
  transition: transform 0.3s ease, background 0.3s ease;
}

button:hover {
  transform: scale(1.1);
  background: #cc00cc;
}

code {
  display: block;
  background: rgba(0, 0, 0, 0.7);
  color: #00ff00;
  padding: 15px;
  border-radius: 5px;
  overflow-x: auto;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  header h1 {
    font-size: 2rem;
  }
  section h2 {
    font-size: 1.5rem;
  }
  button {
    padding: 10px 20px;
    font-size: 0.9rem;
  }
}

footer {
  text-align: center;
  padding: 20px;
  background: rgba(0, 0, 102, 0.8);
  margin-top: 40px;
}