:root {
    --primary: #0f0c29;
    --secondary: #302b63;
    --accent: #00ffcc;
    --highlight: #ffcc00;
    --text: #ffffff;
    --card-bg: #1e1e2f;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  }

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

  body {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--text);
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
  }

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

  header {
    text-align: center;
    padding: 2rem 0;
    position: relative;
  }

  header::after {
    content: "";
    display: block;
    width: 200px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    margin: 1rem auto;
  }

  h1, h2, h3 {
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 1.5rem;
    background: linear-gradient(90deg, var(--accent), var(--highlight));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

  h2 {
    font-size: 2rem;
    position: relative;
    padding-bottom: 0.5rem;
  }

  h2::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 2px;
    background: var(--accent);
  }

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

  article {
    background: rgba(30, 30, 47, 0.7);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 3rem;
    margin: 2rem 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  }

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

  .card {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 2rem;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
  }

  .card::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(0, 255, 204, 0.1), transparent);
    transform: rotate(45deg);
    transition: var(--transition);
    opacity: 0;
  }

  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
  }

  .card:hover::before {
    opacity: 1;
    animation: shine 1.5s;
  }

  @keyframes shine {
    0% { left: -50%; }
    100% { left: 150%; }
  }

  .image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin: 2rem 0;
  }

  .decor-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    transition: var(--transition);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  }

  .decor-img:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
  }

  pre {
    background: rgba(0, 0, 0, 0.3);
    border-left: 3px solid var(--accent);
    border-radius: 5px;
    padding: 1.5rem;
    margin: 1.5rem 0;
    overflow: auto;
    font-family: 'Courier New', monospace;
    position: relative;
  }

  pre::before {
    content: "CSS";
    position: absolute;
    top: 0;
    right: 0;
    background: var(--accent);
    color: var(--primary);
    padding: 0.2rem 0.5rem;
    font-size: 0.8rem;
    border-bottom-left-radius: 5px;
  }

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

  .notice {
    background: rgba(0, 255, 204, 0.1);
    border-left: 3px solid var(--accent);
    padding: 1rem;
    margin: 2rem 0;
    border-radius: 0 5px 5px 0;
  }

  .nav-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 2rem 0;
    flex-wrap: wrap;
  }

  .nav-link {
    color: var(--text);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.1);
  }

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

  @media (max-width: 768px) {
    .container {
      padding: 1rem;
    }
    
    article {
      padding: 1.5rem;
    }
    
    .grid {
      grid-template-columns: 1fr;
    }
  }

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

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