body {
  font-family: Arial, sans-serif;
  background: #f7fafc;
  display: flex;
  justify-content: center;
  padding-top: 50px;
}

.container {
  background: white;
  padding: 20px 30px;
  border-radius: 10px;
  box-shadow: 0 0 15px rgba(0,0,0,0.1);
  width: 400px;
  text-align: center;
}

h1 {
  margin-bottom: 20px;
}

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

#fileList {
  text-align: left;
  list-style: none;
  padding-left: 0;
  margin-bottom: 20px;
}

button {
  padding: 10px 20px;
  background: #3b82f6;
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
}

button:hover {
  background: #2563eb;
}