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

  body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #222;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    color: #fff;
  }

  .container {
    position: relative;
    background: #333;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    width: 100%;
    max-width: 600px;
    margin-top: 600px;
  }

  h1 {
    text-align: center;
    color: #fff;
    margin-bottom: 2rem;
    font-size: 1.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
  }

  .storage-info {
    background: #444;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    font-size: 0.9rem;
  }

  .storage-info p {
    margin: 0.5rem 0;
    color: #90CAF9;
  }

  .storage-bar {
    width: 100%;
    height: 20px;
    background: #555;
    border-radius: 10px;
    overflow: hidden;
    margin: 10px 0;
  }

  .storage-bar-fill {
    height: 100%;
    background: linear-gradient(145deg, #2196F3, #1976D2);
    transition: width 0.3s ease;
  }

  .actions {
    display: grid;
    gap: 1rem;
    margin-bottom: 2rem;
  }

  button {
    padding: 12px 20px;
    border: none;
    border-radius: 8px;
    background: linear-gradient(145deg, #2196F3, #1976D2);
    color: white;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.5px;
  }

  button:hover {
    background: linear-gradient(145deg, #1976D2, #1565C0);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(33, 150, 243, 0.3);
  }

  button.delete {
    background: linear-gradient(145deg, #f44336, #d32f2f);
  }

  button.delete:hover {
    background: linear-gradient(145deg, #d32f2f, #c62828);
    box-shadow: 0 4px 15px rgba(244, 67, 54, 0.3);
  }

  .control-panel {
    position: absolute;
    top: -50px;
    right: 0;
    padding: 15px 25px;
    border: none;
    border-radius: 8px;
    background: linear-gradient(145deg, #2196F3, #1976D2);
    color: white;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    
    font-weight: 600;
    letter-spacing: 0.5px;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(33, 150, 243, 0.2);
    display: inline-block;
  }

  .control-panel:hover {
    background: linear-gradient(145deg, #1976D2, #1565C0);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(33, 150, 243, 0.3);
  }

  #fileInput {
    display: none;
  }

  .message {
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    display: none;
  }

  .success {
    background: #43A047;
    color: white;
  }

  .error {
    background: #d32f2f;
    color: white;
  }

  .preview {
    background: #444;
    padding: 1.5rem;
    border-radius: 8px;
    margin-top: 1rem;
  }

  .preview h3 {
    margin-bottom: 1rem;
    color: #90CAF9;
    text-transform: uppercase;
    font-size: 1rem;
    letter-spacing: 0.5px;
  }

  pre {
    white-space: pre-wrap;
    word-break: break-all;
    background: #555;
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid #666;
    max-height: 200px;
    overflow-y: auto;
    color: #fff;
    font-family: 'Courier New', monospace;
  }

  ::-webkit-scrollbar {
    width: 8px;
  }

  ::-webkit-scrollbar-track {
    background: #444;
    border-radius: 4px;
  }

  ::-webkit-scrollbar-thumb {
    background: #666;
    border-radius: 4px;
  }

  ::-webkit-scrollbar-thumb:hover {
    background: #888;
  }