:root {
    --primary: #2c3e50;
    --secondary: #4ca1af;
    --accent: #8e44ad;
    --light: #ecf0f1;
    --dark: #1a1a1a;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  }

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

  body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: linear-gradient(135deg, var(--primary), var(--secondary), var(--accent));
    background-size: 600% 600%;
    animation: GradientAnimation 15s ease infinite;
    padding: 0;
    margin: 0;
  }

  @keyframes GradientAnimation {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
  }

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

  header {
    text-align: center;
    padding: 40px 0;
    position: relative;
  }

  header::after {
    content: "";
    display: block;
    width: 100px;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary), var(--accent));
    margin: 20px auto;
    border-radius: 2px;
  }

  h1, h2, h3, h4 {
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--light);
  }

  h1 { font-size: 2.5rem; }
  h2 { font-size: 2rem; }
  h3 { font-size: 1.5rem; }
  h4 { font-size: 1.25rem; }

  .tech-banner {
    background: rgba(0,0,0,0.7);
    color: white;
    padding: 15px;
    text-align: center;
    font-size: 1.2rem;
    margin-bottom: 40px;
    border-radius: 5px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  }

  article {
    background: rgba(255,255,255,0.9);
    border-radius: 15px;
    padding: 40px;
    margin-bottom: 40px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  }

  p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: #333;
  }

  pre {
    background: #2d3748;
    color: #f8f8f2;
    padding: 20px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 20px 0;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    position: relative;
  }

  pre::before {
    content: "CSS";
    position: absolute;
    top: 0;
    right: 0;
    background: var(--accent);
    color: white;
    padding: 3px 10px;
    border-radius: 0 0 0 5px;
    font-size: 0.8rem;
  }

  code {
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
  }

  table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  }

  th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #ddd;
  }

  th {
    background: var(--primary);
    color: white;
  }

  tr:hover {
    background: rgba(76, 161, 175, 0.1);
  }

  .gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin: 40px 0;
  }

  .gallery-item {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
    transition: var(--transition);
    position: relative;
  }

  .gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.3);
  }

  .gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
  }

  .gallery-item::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
    opacity: 0;
    transition: var(--transition);
  }

  .gallery-item:hover::after {
    opacity: 1;
  }

  .nav-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin: 30px 0;
  }

  .nav-link {
    padding: 10px 20px;
    background: rgba(255,255,255,0.2);
    color: white;
    border-radius: 30px;
    text-decoration: none;
    transition: var(--transition);
    font-weight: 500;
  }

  .nav-link:hover {
    background: rgba(255,255,255,0.4);
    transform: translateY(-3px);
  }

  footer {
    text-align: center;
    padding: 30px;
    color: white;
    font-size: 0.9rem;
  }

  @media (max-width: 768px) {
    article {
      padding: 25px;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.25rem; }
    
    .gallery {
      grid-template-columns: 1fr;
    }
  }