body {
  background: #181a20;
  color: #f5f6fa;
  font-family: 'Segoe UI', Arial, sans-serif;
  margin: 0;
  padding: 0;
}

h1 {
  text-align: center;
  padding: 2rem 0 1rem 0;
  font-size: 2.5rem;
  font-weight: bold;
  letter-spacing: 2px;
  color: #00aaff;
}

label {
  font-size: 1.1rem;
  color: #f5f6fa;
  margin-left: 1rem;
}

select, button {
  background: #23272f;
  color: #00aaff;
  border: none;
  border-radius: 6px;
  padding: 0.7rem 1.2rem;
  font-size: 1rem;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  margin: 0.5rem 0.5rem 0.5rem 0;
}

button:hover, select:hover {
  background: #00aaff;
  color: #23272f;
}

#sortCanvas {
  display: block;
  margin: 2rem auto 2rem auto;
  background: #23272f;
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}

#output {
  max-width: 900px;
  margin: 0 auto 2rem auto;
  background: #23272f;
  border-radius: 8px;
  padding: 1rem 2rem;
  color: #f5f6fa;
  font-size: 1.1rem;
  box-shadow: 0 2px 12px rgba(0,0,0,0.2);
}