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

body {
  font-family: sans-serif;
  background: #f9f9f9;
  padding: 1rem;
  color: #333;
}

.container {
  max-width: 500px;
  margin: auto;
  background: #fff;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

h1 {
  text-align: center;
  margin-bottom: 0.5rem;
}

p {
  text-align: center;
  margin-bottom: 1rem;
}

input[type="file"] {
  display: block;
  margin: 1rem auto;
}

button {
  display: block;
  margin: 0 auto;
  padding: 0.6rem 1.2rem;
  border: none;
  border-radius: 8px;
  background: #4caf50;
  color: white;
  font-size: 1rem;
  cursor: pointer;
}

button:hover {
  background: #45a049;
}

#output {
  margin-top: 1rem;
  text-align: center;
}

footer {
  margin-top: 1.5rem;
  text-align: center;
}

footer a {
  text-decoration: none;
  color: #4caf50;
}