:root {
    --primary: #0f0f0f;
    --secondary: #1a1a1a;
    --accent: #00bfff;
    --text: #ffffff;
    --card-bg: #2a2a2a;
    --highlight: #1e3c72;
  }

  * {
    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;
    padding-top: 80px;
  }

  .design-notice {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: rgba(0,0,0,0.7);
    padding: 10px 15px;
    border-radius: 20px;
    font-size: 12px;
    z-index: 1000;
    backdrop-filter: blur(5px);
  }

  .navbar {
    background: linear-gradient(90deg, var(--highlight), #2a5298);
    position: fixed;
    top: 0;
    width: 100%;
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
    z-index: 1000;
  }

  .nav-links {
    display: flex;
    gap: 25px;
  }

  .nav-links a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: all 0.3s ease;
  }

  .nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
  }

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

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

  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px;
  }

  article {
    background: rgba(26, 26, 26, 0.8);
    border-radius: 15px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    margin-bottom: 50px;
  }

  h2 {
    color: var(--accent);
    margin: 30px 0 20px;
    font-size: 28px;
    position: relative;
    padding-bottom: 10px;
  }

  h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), transparent);
  }

  p {
    margin-bottom: 20px;
    font-size: 17px;
  }

  pre {
    background: #1a1a1a;
    border-radius: 8px;
    padding: 20px;
    margin: 25px 0;
    overflow-x: auto;
    border-left: 4px solid var(--accent);
    box-shadow: inset 0 0 10px rgba(0,0,0,0.5);
  }

  code {
    font-family: 'Courier New', monospace;
    color: #f8f8f2;
  }

  .image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
    margin: 40px 0;
  }

  .image-card {
    background: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }

  .image-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,191,255,0.3);
  }

  .image-card img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s ease;
  }

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

  .image-caption {
    padding: 15px;
    text-align: center;
    font-size: 14px;
    color: #cccccc;
  }

  .accordion {
    margin: 30px 0;
  }

  .accordion-item {
    background: var(--card-bg);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
  }

  .accordion-header {
    padding: 15px 20px;
    background: linear-gradient(90deg, rgba(30,60,114,0.5), transparent);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s ease;
  }

  .accordion-header:hover {
    background: linear-gradient(90deg, rgba(30,60,114,0.7), transparent);
  }

  .accordion-content {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
  }

  .accordion-item.active .accordion-content {
    padding: 20px;
    max-height: 1000px;
  }

  .accordion-icon {
    transition: transform 0.3s ease;
  }

  .accordion-item.active .accordion-icon {
    transform: rotate(180deg);
  }

  @media (max-width: 768px) {
    .container {
      padding: 20px;
    }
    
    article {
      padding: 25px;
    }
    
    .nav-links {
      gap: 15px;
    }
    
    .image-grid {
      grid-template-columns: 1fr;
    }
  }

  @media (max-width: 480px) {
    .navbar {
      padding: 15px;
    }
    
    h2 {
      font-size: 24px;
    }
  }

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

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

  @keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
  }

  .pulsing {
    animation: pulse 2s ease-in-out infinite;
  }