:root {
  --primary: #0D0D0D;
  --secondary: #1E1E1E;
  --accent: #1E90FF;
  --highlight: #FF4500;
  --text: #E0E0E0;
  --card-bg: rgba(30, 30, 30, 0.8);
}

body {
  background: radial-gradient(circle at center, #0D0D0D, #1E1E1E);
  color: var(--text);
  font-family: 'Montserrat', sans-serif;
  line-height: 1.6;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(13, 13, 13, 0.9);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: 15px 0;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-links {
  display: flex;
  gap: 30px;
}

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

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

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

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

.hero {
  min-height: 600px;
  display: flex;
  align-items: center;
  position: relative;
  margin-top: 80px;
}

.hero-content {
  max-width: 600px;
  z-index: 2;
}

.hero-title {
  font-size: 3rem;
  margin-bottom: 20px;
  background: linear-gradient(90deg, var(--accent), var(--highlight));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: 1.2rem;
  margin-bottom: 30px;
  opacity: 0.9;
}

.hero-image {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 50%;
  max-width: 600px;
  z-index: 1;
}

.hero-image img {
  width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  transition: transform 0.5s ease;
}

.hero-image:hover img {
  transform: scale(1.05);
}

.section {
  padding: 100px 0;
  position: relative;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 50px;
  text-align: center;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 100px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--highlight));
  margin: 20px auto;
  border-radius: 2px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.card {
  background: var(--card-bg);
  border-radius: 15px;
  padding: 30px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--accent), var(--highlight));
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.card-title {
  font-size: 1.5rem;
  margin-bottom: 15px;
  color: var(--accent);
}

.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 20px;
  transition: transform 0.3s ease;
}

.card:hover .card-image {
  transform: scale(1.03);
}

.code-block {
  background: rgba(0, 0, 0, 0.3);
  border-radius: 10px;
  padding: 20px;
  margin: 30px 0;
  overflow-x: auto;
  border-left: 4px solid var(--accent);
}

.code-block pre {
  margin: 0;
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
  line-height: 1.5;
  color: #f8f8f2;
}

.footer {
  background: var(--primary);
  padding: 50px 0;
  text-align: center;
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--highlight));
}

.notice {
  background: rgba(255, 69, 0, 0.1);
  border: 1px solid var(--highlight);
  border-radius: 5px;
  padding: 15px;
  margin: 30px 0;
  text-align: center;
}

.star {
  position: absolute;
  background: white;
  border-radius: 50%;
  animation: twinkle 2s infinite;
  opacity: 0;
}

@keyframes twinkle {
  0%, 100% { opacity: 0.2; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1); }
}

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

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

@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: 50px;
  }
  
  .hero-content {
    max-width: 100%;
  }
  
  .hero-image {
    position: relative;
    width: 100%;
    margin-top: 50px;
    transform: none;
  }
  
  .nav-links {
    display: none;
  }
  
  .section-title {
    font-size: 2rem;
  }
}