body {
  font-family: Arial, sans-serif;
  background: #f5f5f5;
  text-align: center;
  margin: 0;
  padding: 0;
}

.container {
  padding: 20px;
}

#drop-area {
  border: 2px dashed #999;
  padding: 20px;
  max-width: 400px;
  margin: auto;
  background: white;
  cursor: pointer;
  border-radius: 10px;
}

#drop-area.dragover {
  border-color: #333;
}

button {
  padding: 10px 15px;
  margin-top: 10px;
  cursor: pointer;
  border: none;
  border-radius: 5px;
  background: #333;
  color: white;
}

#result {
  margin-top: 20px;
}

pre {
  background: #222;
  color: #0f0;
  padding: 15px;
  white-space: pre-wrap;
  border-radius: 8px;
  font-size: 14px;
  word-break: break-word;
}

/* Mobile */
@media (max-width: 480px) {
  h1 {
    font-size: 20px;
  }

  #drop-area {
    padding: 15px;
  }

  button {
    width: 100%;
  }
}