body {
  background-color: #0f0f0f;
  color: #fff;
  font-family: 'Poppins', sans-serif;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
}
.container {
  text-align: center;
  padding: 40px;
  border-radius: 12px;
  background-color: #1a1a1a;
  box-shadow: 0 0 12px rgba(0,255,120,0.5);
}
input[type=file] {
  background: #222;
  color: #fff;
  border: 1px solid #444;
  padding: 10px;
  border-radius: 8px;
  margin-top: 10px;
}
button {
  background: #00ff99;
  color: #000;
  padding: 10px 20px;
  border: none;
  margin-top: 15px;
  border-radius: 8px;
  font-weight: bold;
  cursor: pointer;
}
button:hover {
  background: #00cc77;
}
#status {
  margin-top: 15px;
  color: #aaa;
}