:root {
  --primary-color: #0f2027;
  --secondary-color: #203a43;
  --accent-color: #00ffff;
  --highlight-color: #00ff99;
  --text-color: #ffffff;
  --card-bg: rgba(32, 58, 67, 0.8);
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

@font-face {
  font-family: 'Roboto';
  src: local('Roboto'), url(https://fonts.gstatic.com/s/roboto/v30/KFOmCnqEu92Fr1Mu4mxK.woff2) format('woff2');
  font-display: swap;
}

body {
  font-family: 'Roboto', sans-serif;
  color: var(--text-color);
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  line-height: 1.6;
  margin: 0;
  padding: 0;
  min-height: 100%;
}

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

.header {
  text-align: center;
  padding: 60px 0 40px;
  position: relative;
  overflow: hidden;
}

.header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 50%, rgba(0, 255, 255, 0.1) 0%, transparent 70%);
  z-index: -1;
}

.header h1 {
  font-size: 3.5rem;
  margin: 0;
  background: linear-gradient(90deg, var(--accent-color), var(--highlight-color));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 10px rgba(0, 255, 255, 0.3);
}

.tagline {
  font-size: 1.2rem;
  color: var(--accent-color);
  margin-top: 20px;
  padding: 10px 20px;
  display: inline-block;
  border: 1px solid var(--accent-color);
  border-radius: 30px;
  background: rgba(0, 255, 255, 0.1);
}

.nav-container {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15, 32, 39, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.nav {
  display: flex;
  justify-content: center;
  padding: 15px 0;
}

.nav a {
  color: var(--text-color);
  text-decoration: none;
  margin: 0 15px;
  padding: 8px 15px;
  border-radius: 20px;
  transition: var(--transition);
  position: relative;
}

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

.nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent-color);
  transition: var(--transition);
  transform: translateX(-50%);
}

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

.content-grid {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 30px;
  margin: 40px 0;
}

.sidebar {
  position: sticky;
  top: 80px;
  align-self: start;
  background: var(--card-bg);
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.sidebar h3 {
  color: var(--accent-color);
  margin-top: 0;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(0, 255, 255, 0.3);
}

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

.sidebar li {
  margin-bottom: 10px;
}

.sidebar a {
  color: var(--text-color);
  text-decoration: none;
  display: block;
  padding: 8px 10px;
  border-radius: 5px;
  transition: var(--transition);
}

.sidebar a:hover {
  background: rgba(0, 255, 255, 0.1);
  color: var(--accent-color);
}

.main-content {
  background: var(--card-bg);
  border-radius: 15px;
  padding: 30px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

article h2 {
  color: var(--accent-color);
  font-size: 2rem;
  margin-top: 40px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(0, 255, 255, 0.3);
  position: relative;
}

article h2::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100px;
  height: 3px;
  background: var(--highlight-color);
}

article h3 {
  color: var(--highlight-color);
  font-size: 1.5rem;
  margin-top: 30px;
}

article p {
  margin: 20px 0;
  font-size: 1.1rem;
}

article span {
  color: var(--accent-color);
  font-weight: bold;
}

pre {
  background: rgba(15, 32, 39, 0.8);
  border-radius: 10px;
  padding: 20px;
  overflow-x: auto;
  margin: 25px 0;
  border-left: 3px solid var(--accent-color);
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.3);
}

code {
  font-family: 'Roboto Mono', monospace;
  color: var(--accent-color);
}

.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
  margin: 30px 0;
}

.image-card {
  background: var(--card-bg);
  border-radius: 10px;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.image-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 255, 255, 0.2);
}

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

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

.image-card .caption {
  padding: 15px;
}

.footer {
  text-align: center;
  padding: 30px 0;
  margin-top: 60px;
  background: rgba(15, 32, 39, 0.8);
  border-top: 1px solid rgba(0, 255, 255, 0.2);
}

.notice {
  background: rgba(0, 255, 255, 0.1);
  border: 1px solid var(--accent-color);
  border-radius: 10px;
  padding: 15px;
  margin: 30px 0;
  text-align: center;
  color: var(--accent-color);
}

@media (max-width: 768px) {
  .content-grid {
    grid-template-columns: 1fr;
  }
  
  .sidebar {
    position: static;
    margin-bottom: 30px;
  }
  
  .header h1 {
    font-size: 2.5rem;
  }
  
  .image-grid {
    grid-template-columns: 1fr;
  }
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
  100% { transform: translateY(0px); }
}

.floating {
  animation: float 3s ease-in-out infinite;
}

.highlight-box {
  background: rgba(0, 255, 255, 0.1);
  border-left: 3px solid var(--accent-color);
  padding: 20px;
  margin: 30px 0;
  border-radius: 0 10px 10px 0;
}

.highlight-box h4 {
  color: var(--accent-color);
  margin-top: 0;
}

.tech-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 20px;
  display: block;
  filter: drop-shadow(0 0 5px rgba(0, 255, 255, 0.5));
  transition: var(--transition);
}

.tech-icon:hover {
  transform: rotate(15deg) scale(1.1);
}