:root {
    --primary-dark: #1A237E;
    --primary-light: #651FFF;
    --accent: #FF9800;
    --secondary: #81C784;
    --text-light: #FFFFFF;
    --text-dark: #212121;
    --card-bg: rgba(255, 255, 255, 0.1);
    --transition: all 0.3s ease;
  }

  @font-face {
    font-family: 'Roboto Bold';
    src: local('Roboto Bold'), local('Roboto-Bold');
    font-weight: 700;
  }

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

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

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

  .header {
    text-align: center;
    padding: 60px 0 40px;
    position: relative;
  }

  .header::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
  }

  h1, h2, h3, h4 {
    font-family: 'Roboto Bold', sans-serif;
    margin-bottom: 20px;
    color: var(--accent);
  }

  h1 {
    font-size: 2.5rem;
    background: linear-gradient(90deg, var(--accent), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 10px;
  }

  h2 {
    font-size: 2rem;
    margin-top: 40px;
    position: relative;
    padding-bottom: 10px;
  }

  h2::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 2px;
    background: var(--secondary);
  }

  h3 {
    font-size: 1.5rem;
    margin-top: 30px;
    color: var(--secondary);
  }

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

  .note {
    background: rgba(255, 255, 255, 0.05);
    border-left: 4px solid var(--accent);
    padding: 20px;
    margin: 30px 0;
    border-radius: 0 8px 8px 0;
  }

  .note p {
    margin-bottom: 0;
  }

  .grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 30px;
    margin: 40px 0;
  }

  .card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  .card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
  }

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

  .image-card {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
  }

  .image-card:hover {
    transform: scale(1.03);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  }

  .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, 0.2);
    border-radius: 8px;
    padding: 20px;
    margin: 20px 0;
    overflow: auto;
    border-left: 4px solid var(--accent);
    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: 2px 5px;
    border-radius: 3px;
    font-size: 0.9rem;
  }

  .cta-button {
    display: inline-block;
    background-color: var(--accent);
    color: var(--text-dark);
    padding: 15px 30px;
    border: none;
    border-radius: 30px;
    transition: var(--transition);
    cursor: pointer;
    font-weight: bold;
    text-decoration: none;
    margin: 20px 0;
    box-shadow: 0 4px 15px rgba(255, 152, 0, 0.3);
  }

  .cta-button:hover {
    background-color: #FFA726;
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(255, 152, 0, 0.4);
  }

  .navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 35, 126, 0.8);
    transition: background 0.5s ease;
    padding: 20px;
    z-index: 1000;
    backdrop-filter: blur(10px);
  }

  .navbar.scrolled {
    background: rgba(26, 35, 126, 0.95);
  }

  .footer {
    text-align: center;
    padding: 40px 0;
    margin-top: 60px;
    background: rgba(0, 0, 0, 0.1);
    position: relative;
  }

  .footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--secondary), transparent);
  }

  @keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0px); }
  }

  .floating {
    animation: float 6s ease-in-out infinite;
  }

  @media (max-width: 768px) {
    .grid-container {
      grid-template-columns: 1fr;
    }
    
    h1 {
      font-size: 2rem;
    }
    
    h2 {
      font-size: 1.5rem;
    }
    
    h3 {
      font-size: 1.2rem;
    }
  }