:root {
  --bg: #0a0a0a;
  --bg-alt: #111111;
  --text: #e0e0e0;
  --accent: #00ffcc;
  --accent-dark: #009999;
  --max-width: 1200px;
  --transition: 0.3s ease;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}

.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(0,0,0,0.8);
  backdrop-filter: blur(5px);
  z-index: 1000;
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  color: var(--accent);
  font-size: 1.5rem;
  font-weight: bold;
  text-decoration: none;
}

.nav-menu {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}

.nav-menu a {
  color: var(--text);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

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

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}

.nav-menu a:hover::after {
  width: 100%;
}

.hero {
  position: relative;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.6);
  z-index: -1;
}

.hero-overlay {
  max-width: var(--max-width);
  text-align: center;
  padding: 2rem;
  background: rgba(0,0,0,0.4);
  border-radius: 12px;
}

.hero-overlay h1 {
  font-size: 3rem;
  color: var(--accent);
  margin-bottom: 1rem;
  animation: fadeIn 1s ease-out;
}

.hero-overlay p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  color: var(--text);
  animation: fadeIn 1s ease-out 0.2s forwards;
  opacity: 0;
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  background: var(--accent);
  color: #000;
  text-decoration: none;
  border-radius: 6px;
  transition: var(--transition);
  font-weight: 600;
  animation: fadeIn 1s ease-out 0.4s forwards;
  opacity: 0;
}

.btn:hover {
  background: var(--accent-dark);
  transform: translateY(-3px);
  box-shadow: 0 6px 15px rgba(0,255,204,0.3);
}

.features {
  padding: 4rem 0;
  background: var(--bg-alt);
  color: var(--text);
}

.features h2 {
  text-align: center;
  margin-bottom: 3rem;
  font-size: 2.5rem;
  color: var(--accent);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  max-width: var(--max-width);
  margin: 0 auto;
}

.card {
  background: var(--bg);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0,0,0,0.5);
  transition: var(--transition);
  opacity: 0;
  transform: translateY(30px);
}

.card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  transition: var(--transition);
}

.card h3 {
  margin: 1rem;
  color: var(--accent);
  font-size: 1.4rem;
}

.card p {
  margin: 0 1rem 1rem;
  color: var(--text);
  font-size: 0.95rem;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 12px 20px rgba(0,255,204,0.2);
}

.content {
  padding: 4rem 0;
  background: var(--bg);
  color: var(--text);
  text-align: center;
}

.content h2 {
  margin-bottom: 1.5rem;
  color: var(--accent);
}

.content p {
  max-width: 800px;
  margin: 0 auto;
  font-size: 1.1rem;
  line-height: 1.7;
}

footer {
  background: var(--bg-alt);
  text-align: center;
  padding: 2rem 0;
  color: var(--text);
  opacity: 0;
  transform: translateY(30px);
  animation: fadeIn 1s ease-out 0.6s forwards;
}

@keyframes fadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Scroll behavior */
html {
  scroll-behavior: smooth;
}

/* Responsive */
@media (max-width: 768px) {
  .hero-overlay h1 {
    font-size: 2.2rem;
  }
  .hero-overlay p {
    font-size: 1rem;
  }
  .nav-menu {
    flex-direction: column;
    gap: 0.5rem;
  }
  .nav-logo {
    justify-self: center;
  }
}