body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
    margin: 0;
    background: #ffffff;
    color: #111827;
    line-height: 1.6;
  }
  
  .container {
    max-width: 800px;
    margin: auto;
    padding: 40px 20px;
  }
  
  h1, h2 {
    color: #111827;
    font-weight: 600;
    letter-spacing: -0.5px;
  }
  
  .card {
    background: #ffffff;
    padding: 24px;
    border-radius: 12px;
    margin-bottom: 20px;
    border: 1px solid #e5e7eb;
  }
  
  .highlight {
    background: #f9fafb;
    padding: 16px;
    border-radius: 10px;
    border-left: 4px solid #111827;
    font-weight: 500;
  }
  
  button {
    background: #111827;
    color: #ffffff;
    border: none;
    padding: 10px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
  }
  
  button:hover {
    background: #374151;
  }

  html, body {
    height: 100%;
    margin: 0; /* Removes default body margin */
  }
  .pdf-container {
    height: 100vh; /* 100% of the viewport height */
    width: 100%;
  }

  /* Chart responsive styling */
  #mainChart,
  #errorChart {
    max-width: 100%;
    min-height: 320px;
    height: auto;
  }

  .chart-container {
    position: relative;
    width: 100%;
    min-height: 320px;
    margin: 20px 0;
  }

  @media (max-width: 768px) {
    .container {
      padding: 20px 12px;
    }
    
    .card {
      padding: 16px;
    }

    button {
      padding: 8px 12px;
      font-size: 13px;
      margin-right: 8px;
      margin-bottom: 8px;
    }
  }