body {
  font-family: Arial, sans-serif;
  background-color: #f7f9fc;
  color: #333;
  margin: 0;
  padding: 2rem;
  text-align: center;
}

h1 {
  margin-bottom: 0.5rem;
}

h4 {
  font-weight: normal;
  color: #555;
  margin-top: 0;
}

input[type="file"] {
  margin: 1rem 0;
}

button {
  background-color: #007acc;
  color: white;
  border: none;
  padding: 0.6rem 1.2rem;
  font-size: 1rem;
  cursor: pointer;
  border-radius: 4px;
  transition: background-color 0.2s ease;
}

button:hover {
  background-color: #005ea6;
}

button:active {
  background-color: #004b87;
}

a {
  color: #007acc;
}

.github-link {
  margin-top: 1.5rem;
  font-size: 0.9rem;
}

.github-link a {
  color: #007acc;
  text-decoration: none;
}

.github-link a:hover {
  text-decoration: underline;
}