body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 500px;
  margin: 60px auto;
  padding: 30px;
  background: white;
  border-radius: 8px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  text-align: center;
}

input[type="file"] {
  margin: 20px 0;
}

button {
  padding: 10px 20px;
  background-color: #007BFF;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
}

button:hover {
  background-color: #0056b3;
}

.progress-bar {
  width: 100%;
  background-color: #eee;
  border-radius: 10px;
  margin: 20px 0;
  height: 20px;
  display: none;
}

.progress-bar-fill {
  height: 100%;
  background-color: #28a745;
  width: 0%;
  border-radius: 10px;
  transition: width 0.4s ease;
}

.status {
  margin-top: 10px;
  font-weight: bold;
  color: #333;
}