:root {
  --primary-color: #1a1a2e;
  --secondary-color: #6a11cb;
  --accent-color: #2575fc;
  --text-color: #f0f0f0;
  --light-bg: rgba(255,255,255,0.1);
  --card-bg: rgba(25,25,112,0.2);
  --gradient: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
}

@font-face {
  font-family: 'Orbitron';
  src: url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700&display=swap');
}

body {
  font-family: 'Roboto', sans-serif;
  color: var(--text-color);
  background: var(--primary-color);
  margin: 0;
  padding: 0;
  line-height: 1.6;
  overflow-x: hidden;
}

.header {
  background: rgba(25,25,112,0.7);
  backdrop-filter: blur(10px);
  padding: 1.5rem;
  position: fixed;
  width: 100%;
  z-index: 1000;
  transition: all 0.5s ease;
}

.header.scrolled {
  background: rgba(25,25,112,0.9);
}

.header-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.8rem;
  margin: 0;
  background: linear-gradient(90deg, #6a11cb, #2575fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 2rem 2rem;
}

.hero {
  min-height: 80vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('https://images.gptkong.com/demo/sample1.png') center/cover no-repeat;
  opacity: 0.2;
  z-index: -1;
}

.hero-content {
  max-width: 800px;
  padding: 3rem;
  background: var(--light-bg);
  backdrop-filter: blur(5px);
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.hero-title {
  font-family: 'Orbitron', sans-serif;
  font-size: 3rem;
  margin-bottom: 1.5rem;
  color: #fff;
}

.hero-subtitle {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.note {
  background: rgba(255,255,255,0.1);
  padding: 1rem;
  border-left: 3px solid var(--accent-color);
  margin: 2rem 0;
  font-size: 0.9rem;
}

article {
  background: var(--light-bg);
  padding: 3rem;
  border-radius: 20px;
  margin: 3rem 0;
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

article h2 {
  font-family: 'Orbitron', sans-serif;
  font-size: 2rem;
  margin-top: 3rem;
  color: #fff;
  position: relative;
  padding-bottom: 0.5rem;
}

article h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100px;
  height: 3px;
  background: var(--gradient);
}

article h3 {
  font-family: 'Orbitron', sans-serif;
  font-size: 1.5rem;
  margin-top: 2rem;
  color: #e0e0e0;
}

article h4 {
  font-size: 1.2rem;
  margin-top: 1.5rem;
  color: #d0d0d0;
}

article p {
  font-size: 1.1rem;
  margin: 1.5rem 0;
}

article strong {
  color: var(--accent-color);
}

pre {
  background: rgba(0,0,0,0.3);
  padding: 1.5rem;
  border-radius: 10px;
  overflow: auto;
  margin: 2rem 0;
  border-left: 4px solid var(--secondary-color);
}

code {
  font-family: 'Courier New', monospace;
  color: #f8f8f2;
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

.image-card {
  border-radius: 15px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0,0,0,0.3);
  transition: transform 0.3s ease;
}

.image-card:hover {
  transform: translateY(-10px);
}

.image-card img {
  width: 100%;
  height: auto;
  display: block;
}

.footer {
  text-align: center;
  padding: 2rem;
  margin-top: 3rem;
  background: rgba(0,0,0,0.2);
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2rem;
  }
  
  article {
    padding: 2rem;
  }
  
  .image-grid {
    grid-template-columns: 1fr;
  }
}

/* Animations */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}

.floating {
  animation: float 6s ease-in-out infinite;
}

/* Particle background */
.particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  opacity: 0.3;
}

.particle {
  position: absolute;
  width: 5px;
  height: 5px;
  background: rgba(255,255,255,0.8);
  border-radius: 50%;
  animation: particleMove 5s linear infinite;
}

@keyframes particleMove {
  0% { transform: translate(0, 0); opacity: 1; }
  100% { transform: translate(100px, 100px); opacity: 0; }
}

/* Navigation */
.nav-links {
  display: flex;
  gap: 2rem;
  margin-top: 1rem;
}

.nav-link {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-color);
  transition: width 0.3s ease;
}

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