body {
  margin: 0;
  font-family: 'Arial', sans-serif;
  background: #0a0a0a;
  color: #fff;
}
a { color: #00ff40; text-decoration: none; }

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: rgba(0,0,0,0.8);
  position: sticky;
  top: 0;
  z-index: 100;
}
header .logo img {
  height: 60px;
}
header nav a { margin: 0 1rem; }

.hero {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background: #000;
  position: relative;
  text-align: center;
}
.hero .overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.6);
}
.hero-logo {
  width: 300px;
  max-width: 90%;
  margin-bottom: 2rem;
}
.btn {
  padding: 0.8rem 2rem;
  background: #00ff40;
  color: black;
  border-radius: 5px;
  transition: background 0.3s;
}
.btn:hover { background: #00cc33; box-shadow: 0 0 10px #00ff40; }

.content {
  padding: 4rem 2rem;
  text-align: center;
}

.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

form {
  display: flex;
  flex-direction: column;
  max-width: 400px;
  margin: auto;
}
form input, form textarea {
  margin-bottom: 1rem;
  padding: 0.8rem;
  border: none;
  border-radius: 4px;
}
form button {
  background: #00ff40;
  color: black;
  padding: 0.8rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
}

@media (max-width: 768px) {
  .hero-logo {
    width: 250px;
  }
  header nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
  }
}