/* Base styles */
:root {
    --primary-color: #000;
    --secondary-color: #fff;
    --glow-color: rgba(255, 255, 255, 0.7);
    --glow-spread: 10px;
    --glow-intensity: 0.8;
  }
  
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: 'Arial', sans-serif;
    background-color: var(--primary-color);
    color: var(--secondary-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
  }
  
  /* Layout */
  .wrapper {
    display: flex;
    width: 100%;
    max-width: 1200px;
    height: 80vh;
    box-shadow: 0 0 var(--glow-spread) var(--glow-color);
    border-radius: 10px;
    overflow: hidden;
  }
  
  .main-content {
    flex: 3;
    padding: 30px;
    background-color: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  .sidebar {
    flex: 1;
    background-color: rgba(20, 20, 20, 0.9);
    border-left: 1px solid var(--glow-color);
    box-shadow: inset 0 0 15px rgba(255, 255, 255, 0.2);
  }
  
  /* Content styling */
  .content-box {
    text-align: center;
    padding: 40px;
    border-radius: 8px;
    background-color: rgba(10, 10, 10, 0.7);
    box-shadow: 
      0 0 15px var(--glow-color),
      0 0 30px rgba(255, 255, 255, 0.3);
    animation: pulse 4s infinite alternate;
  }
  
  h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--secondary-color);
    text-shadow: 
      0 0 5px var(--glow-color),
      0 0 10px var(--glow-color),
      0 0 15px var(--glow-color);
  }
  
  p {
    font-size: 1.2rem;
    line-height: 1.6;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.9);
  }
  
  /* Animations */
  @keyframes pulse {
    0% {
      box-shadow: 
        0 0 15px rgba(255, 255, 255, 0.5),
        0 0 30px rgba(255, 255, 255, 0.2);
    }
    100% {
      box-shadow: 
        0 0 25px rgba(255, 255, 255, 0.8),
        0 0 50px rgba(255, 255, 255, 0.4);
    }
  }
  
  /* Responsive adjustments */
  @media (max-width: 768px) {
    .wrapper {
      flex-direction: column;
      height: auto;
    }
    
    .sidebar {
      height: 100px;
      border-left: none;
      border-top: 1px solid var(--glow-color);
    }
    
    h1 {
      font-size: 2rem;
    }
  }