:root {
    --primary-color: #00ff00;
    --secondary-color: #008000;
    --background-color: #000000;
    --text-color: #00ff00;
    --box-background: rgba(0, 20, 0, 0.8);
  }
  
  body {
    font-family: "Share Tech Mono", monospace;
    margin: 0;
    padding: 20px;
    background-color: var(--background-color);
    color: var(--text-color);
    position: relative;
    overflow-x: hidden;
  }
  
  /* Matrix Rain Effect */
  .matrix-rain {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
      180deg,
      rgba(0, 0, 0, 0) 0%,
      rgba(0, 32, 0, 0.2) 50%,
      rgba(0, 64, 0, 0.3) 100%
    );
    pointer-events: none;
    z-index: -1;
  }
  
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
    z-index: 1;
  }
  
  h1 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 30px;
    text-shadow: 0 0 10px var(--primary-color);
    letter-spacing: 2px;
  }
  
  .upload-section {
    text-align: center;
    margin-bottom: 30px;
  }
  
  .file-input {
    display: none;
  }
  
  .upload-button {
    background-color: transparent;
    color: var(--primary-color);
    padding: 12px 24px;
    border: 2px solid var(--primary-color);
    border-radius: 4px;
    cursor: pointer;
    display: inline-block;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
  }
  
  .upload-button:hover {
    background-color: var(--primary-color);
    color: black;
    box-shadow: 0 0 20px var(--primary-color);
  }
  
  .image-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
  }
  
  .image-box {
    background-color: var(--box-background);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 15px rgba(0, 255, 0, 0.2);
    border: 1px solid var(--primary-color);
  }
  
  .image-box h2 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 15px;
    text-shadow: 0 0 5px var(--primary-color);
  }
  
  #originalImage,
  #processedCanvas {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    border: 1px solid var(--primary-color);
  }
  
  .download-button {
    background-color: transparent;
    color: var(--primary-color);
    padding: 12px 24px;
    border: 2px solid var(--primary-color);
    border-radius: 4px;
    cursor: pointer;
    display: block;
    margin: 0 auto;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-family: "Share Tech Mono", monospace;
  }
  
  .download-button:disabled {
    border-color: #333;
    color: #333;
    cursor: not-allowed;
  }
  
  .download-button:not(:disabled):hover {
    background-color: var(--primary-color);
    color: black;
    box-shadow: 0 0 20px var(--primary-color);
  }
  
  /* Snapchat Popup */
  .snapchat-popup {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--box-background);
    padding: 15px;
    border-radius: 8px;
    border: 1px solid var(--primary-color);
    box-shadow: 0 0 15px rgba(0, 255, 0, 0.2);
    z-index: 1000;
  }
  
  .snapchat-popup p {
    margin: 0 0 10px 0;
    color: var(--primary-color);
  }
  
  .snapchat-button {
    display: inline-block;
    background-color: #fffc00;
    color: #000;
    padding: 8px 16px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s;
  }
  
  a {
    color: var(--primary-color);
    text-decoration: none;
  }
  
  a:hover {
    text-decoration: underline;
  }
  
  .snapchat-button:hover {
    background-color: #fff;
    transform: scale(1.05);
  }
  
  @media (max-width: 768px) {
    .image-container {
      grid-template-columns: 1fr;
    }
  
    .snapchat-popup {
      bottom: 10px;
      right: 10px;
      left: 10px;
      text-align: center;
    }
  }
  
  .hidden {
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
  }
  
  .visible {
    display: grid;
    opacity: 1;
    animation: fadeIn 0.3s ease-in-out;
  }
  
  @keyframes fadeIn {
    from {
      opacity: 0;
    }
    to {
      opacity: 1;
    }
  }