body {
  font-family: Arial, sans-serif;
  background: #0d0d0d;
  color: #eee;
  text-align: center;
  margin: 0;
  padding: 40px;
}
h1 { margin-bottom: 10px; }
#results {
  display: inline-block;
  background: #1a1a1a;
  padding: 20px 30px;
  border-radius: 10px;
  margin-top: 20px;
  text-align: left;
  font-size: 16px;
  line-height: 1.5;
  box-shadow: 0 0 15px rgba(0,0,0,0.5);
  min-width: 300px;
}
.good { color: #00ff88; }
.warn { color: #ffcc00; }
.bad  { color: #ff3344; }
button {
  padding: 10px 20px;
  font-size: 16px;
  background: #0078ff;
  color: white;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  margin-top: 20px;
}
button:disabled { background: #444; cursor: not-allowed; }
small { color: #aaa; display: block; margin-top: 15px; }