body {
  font-family: Arial, sans-serif;
  background: #fff;
  color: #000;
  margin: 2rem;
}

h1 {
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

#files-list div {
  margin: 0.5rem 0;
}

#files-list a {
  text-decoration: none;
  color: #0077cc;
}

#files-list a:hover {
  text-decoration: underline;
}

/* Secret upload button */
#secret-button {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 20px;
  height: 20px;
  background: transparent; /* invisible */
  cursor: pointer;
  z-index: 1000;
}
#secret-button:hover {
  background: rgba(0,0,0,0.1); /* subtle hint on hover */
}