:root {
  --primary-color: #0A192F;
  --secondary-color: #414D65;
  --accent-color: #64FFDA;
  --highlight-color: #C77DFF;
  --text-color: #FFFFFF;
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  color: var(--text-color);
  background: linear-gradient(135deg, var(--primary-color), #000000);
  line-height: 1.6;
  overflow-x: hidden;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  background: rgba(0, 0, 0, 0.8);
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header h1 {
  font-family: 'Roboto Mono', monospace;
  font-size: 24px;
  color: var(--accent-color);
}

nav a {
  text-decoration: none;
  color: var(--highlight-color);
  margin-left: 20px;
  font-weight: bold;
  transition: color 0.3s ease;
}

nav a:hover {
  color: var(--accent-color);
}

.hero {
  height: 100vh;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  text-align: center;
  position: relative;
}

.hero h1 {
  font-size: 48px;
  font-family: 'Roboto Mono', monospace;
  color: var(--accent-color);
  text-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

.hero p {
  font-size: 20px;
  margin-top: 20px;
  max-width: 800px;
}

.section {
  padding: 80px 40px;
  position: relative;
  overflow: hidden;
}

.section:nth-child(even) {
  background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
}

.section h2 {
  font-family: 'Roboto Mono', monospace;
  font-size: 36px;
  color: var(--accent-color);
  margin-bottom: 30px;
  text-align: center;
}

.module {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 40px;
}

.module-item {
  background: rgba(255, 255, 255, 0.1);
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s ease;
}

.module-item:hover {
  transform: translateY(-10px);
}

.code-block {
  background: rgba(0, 0, 0, 0.8);
  padding: 20px;
  border-radius: 8px;
  overflow-x: auto;
  margin: 20px 0;
}

.code-block pre {
  font-family: 'Roboto Mono', monospace;
  color: var(--accent-color);
}

button {
  background: var(--highlight-color);
  border: none;
  padding: 15px 30px;
  font-size: 16px;
  color: var(--primary-color);
  font-weight: bold;
  cursor: pointer;
  border-radius: 5px;
  transition: transform 0.3s ease, background 0.3s ease;
}

button:hover {
  transform: scale(1.1);
  background: #C77DFF;
}

.parallax {
  background-image: url('https://images.gptkong.com/demo/sample1.png'), url('https://images.gptkong.com/demo/sample2.png');
  background-size: cover;
  background-attachment: fixed;
  background-position: center;
  height: 400px;
  position: relative;
}

footer {
  background: var(--primary-color);
  padding: 40px;
  text-align: center;
  color: var(--accent-color);
}

@media (max-width: 768px) {
  .hero h1 {
    font-size: 36px;
  }

  .section h2 {
    font-size: 30px;
  }

  nav a {
    margin-left: 10px;
  }

  header {
    padding: 15px 20px;
  }
}