/* Reset and base styles */
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  body {
    font-family: 'Roboto Mono', monospace;
    background: linear-gradient(135deg, #2c3e50, #8e44ad, #34495e);
    color: #ecf0f1;
    line-height: 1.6;
    overflow-x: hidden;
  }

  a {
    color: #3498db;
    text-decoration: none;
    rel: nofollow;
  }

  a:hover {
    color: #e67e22;
  }

  /* Container and Grid Layout */
  .container {
    display: grid;
    grid-template-areas:
      'header'
      'main'
      'footer';
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr auto;
    min-height: 100vh;
    padding: 20px;
  }

  header {
    grid-area: header;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(52, 73, 94, 0.8);
    padding: 10px 20px;
    border-radius: 10px;
    position: fixed;
    width: calc(100% - 40px);
    top: 20px;
    z-index: 1000;
  }

  .logo {
    font-size: 1.5rem;
    color: #f1c40f;
  }

  nav ul {
    list-style: none;
    display: flex;
    gap: 15px;
  }

  nav ul li {
    position: relative;
  }

  nav ul li::after {
    content: '';
    display: block;
    width: 0;
    height: 2px;
    background: #f1c40f;
    transition: width 0.3s;
    position: absolute;
    bottom: -5px;
    left: 0;
  }

  nav ul li:hover::after {
    width: 100%;
  }

  main {
    grid-area: main;
    margin-top: 80px;
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 20px;
  }

  article {
    background: rgba(44, 62, 80, 0.9);
    padding: 20px;
    border-radius: 10px;
  }

  article h2, article h3, article h4 {
    color: #f39c12;
    margin-bottom: 15px;
  }

  article pre {
    background: #2c3e50;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 20px;
  }

  article code {
    color: #e74c3c;
  }

  .sidebar {
    background: rgba(52, 73, 94, 0.8);
    padding: 20px;
    border-radius: 10px;
    position: sticky;
    top: 100px;
    height: fit-content;
  }

  .sidebar h3 {
    color: #1abc9c;
    margin-bottom: 10px;
  }

  .sidebar ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .sidebar ul li a {
    color: #ecf0f1;
    padding: 10px;
    background: #16a085;
    border-radius: 5px;
    transition: background 0.3s;
  }

  .sidebar ul li a:hover {
    background: #1abc9c;
  }

  footer {
    grid-area: footer;
    text-align: center;
    padding: 10px;
    margin-top: 40px;
    background: rgba(52, 73, 94, 0.8);
    border-radius: 10px;
  }

  /* Responsive Design */
  @media (max-width: 1440px) {
    main {
      grid-template-columns: 1fr 250px;
    }
  }

  @media (max-width: 1200px) {
    main {
      grid-template-columns: 1fr 200px;
    }
  }

  @media (max-width: 1024px) {
    main {
      grid-template-columns: 1fr 180px;
    }
  }

  @media (max-width: 768px) {
    main {
      grid-template-columns: 1fr;
    }

    header {
      flex-direction: column;
      align-items: flex-start;
    }

    nav ul {
      flex-direction: column;
      gap: 10px;
    }

    .sidebar {
      display: none;
    }
  }

  @media (max-width: 480px) {
    .logo {
      font-size: 1.2rem;
    }

    nav ul li {
      font-size: 0.9rem;
    }
  }

  @media (max-width: 320px) {
    .container {
      padding: 10px;
    }

    header {
      padding: 5px 10px;
    }

    main {
      margin-top: 60px;
    }
  }

  /* Animation for particles */
  .particle {
    position: absolute;
    width: 8px;
    height: 8px;
    background: #e74c3c;
    border-radius: 50%;
    opacity: 0.7;
    animation: float 5s infinite;
  }

  @keyframes float {
    0% {
      transform: translateY(0) scale(1);
      opacity: 0.7;
    }
    50% {
      transform: translateY(-20px) scale(1.5);
      opacity: 0.4;
    }
    100% {
      transform: translateY(0) scale(1);
      opacity: 0.7;
    }
  }

  /* Hover effects */
  .hover-scale:hover {
    transform: scale(1.05);
    transition: transform 0.3s;
  }