body {
  margin: 0;
  font-family: 'Orbitron', sans-serif;
  background-color: #0a0a0a;
  color: #e0e0e0;
  overflow-x: hidden;
}

.container {
  display: flex;
}

.sidebar {
  width: 200px;
  height: 100vh;
  position: fixed;
  background-color: #111;
  display: flex;
  flex-direction: column;
  justify-content: center;
  z-index: 1000;
  border-right: 1px solid #222;
}

.sidebar ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar a {
  color: #39ff14;
  text-decoration: none;
  font-size: 18px;
  padding: 15px 20px;
  display: block;
  transition: background 0.3s;
}

.sidebar a:hover {
  background-color: #1a1a1a;
}

.content {
  margin-left: 200px;
  width: calc(100% - 200px);
  padding: 60px;
}

.parallax {
  background: url('https://www.transparenttextures.com/patterns/circuits.png') repeat;
  background-attachment: fixed;
  background-color: #0a0a0a;
  padding: 60px;
  min-height: 100vh;
  position: relative;
}

.intro-text h1 {
  font-size: 48px;
  color: #39ff14;
  margin: 0;
}

.intro-text h2 {
  font-size: 24px;
  color: #39ff14;
  margin-top: 10px;
}

.subtitle {
  color: #39ff14;
  margin-top: 20px;
  font-size: 16px;
}

.description {
  max-width: 600px;
  font-size: 16px;
  margin-top: 30px;
}

.intro-photo img {
  width:          50%;
  height:         auto;
  border-radius:  8px;
  margin-top:     30px;
  box-shadow:     0 0 15px #39ff14;
}

.cta {
  display:          inline-block;
  margin-top:       30px;
  padding:          12px 20px;
  color:            #39ff14;
  border:           2px solid #39ff14;
  border-radius:    4px;
  text-decoration:  none;
  transition:       background-color 0.3s;
}

.cta:hover {
  background-color: #39ff14;
  color: #000;
}

.hidden {
    display: none;
}

.center {
  text-align: center;
}

.centerBlock {
  margin-left:  auto;
  margin-right: auto;
}