:root {
    --primary-color: #0f2027;
    --secondary-color: #203a43;
    --accent-color: #2c5364;
    --highlight-color: #8a2be2;
    --text-color: #e0e0e0;
    --card-bg: rgba(255, 255, 255, 0.1);
    --transition: all 0.3s ease;
  }

  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto', sans-serif;
  }

  body {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    background-size: 600% 600%;
    animation: gradientAnimation 15s ease infinite;
    color: var(--text-color);
    line-height: 1.6;
    padding: 0;
    margin: 0;
    overflow-x: hidden;
  }

  @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: 2rem;
  }

  header {
    text-align: center;
    padding: 3rem 0;
    position: relative;
  }

  header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--highlight-color), transparent);
  }

  h1, h2, h3, h4 {
    margin-bottom: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
    color: white;
  }

  h1 {
    font-size: 2.8rem;
    background: linear-gradient(90deg, #ffffff, #8a2be2);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 0.5rem;
  }

  h2 {
    font-size: 2rem;
    border-left: 4px solid var(--highlight-color);
    padding-left: 1rem;
    margin-top: 3rem;
  }

  h3 {
    font-size: 1.5rem;
    margin-top: 2rem;
    position: relative;
    display: inline-block;
  }

  h3::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 50%;
    height: 2px;
    background: var(--highlight-color);
  }

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

  .reference-banner {
    background: rgba(255, 255, 255, 0.1);
    padding: 1rem;
    text-align: center;
    border-radius: 8px;
    margin-bottom: 3rem;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, 0.2);
  }

  .card {
    background: var(--card-bg);
    border-radius: 15px;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.18);
    padding: 2rem;
    margin-bottom: 3rem;
    transition: var(--transition);
  }

  .card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.5);
  }

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

  .image-card {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
    position: relative;
  }

  .image-card:hover {
    transform: scale(1.03);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
  }

  .image-card img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
  }

  .image-card:hover img {
    transform: scale(1.1);
  }

  pre {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    padding: 1.5rem;
    margin: 2rem 0;
    overflow: auto;
    border-left: 4px solid var(--highlight-color);
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.5;
  }

  code {
    font-family: 'Courier New', monospace;
    background: rgba(0, 0, 0, 0.2);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9rem;
  }

  table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(5px);
    border-radius: 8px;
    overflow: hidden;
  }

  th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  th {
    background: rgba(255, 255, 255, 0.1);
    font-weight: 700;
  }

  tr:hover {
    background: rgba(255, 255, 255, 0.05);
  }

  .floating-button {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--highlight-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 60px;
    height: 60px;
    box-shadow: 0 4px 20px rgba(138, 43, 226, 0.4);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    z-index: 100;
  }

  .floating-button:hover {
    transform: scale(1.1) rotate(90deg);
    box-shadow: 0 6px 25px rgba(138, 43, 226, 0.6);
  }

  .stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
  }

  .star {
    position: absolute;
    width: 2px;
    height: 2px;
    background: white;
    border-radius: 50%;
    animation: twinkle 2s infinite ease-in-out;
  }

  @keyframes twinkle {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
  }

  @media (max-width: 768px) {
    .container {
      padding: 1.5rem;
    }
    
    h1 {
      font-size: 2rem;
    }
    
    h2 {
      font-size: 1.6rem;
    }
    
    .image-grid {
      grid-template-columns: 1fr;
    }
  }