* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: #0f0f23;
  color: #e0e0e0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.container {
  text-align: center;
  padding: 2rem;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, #f6821f, #fbad41);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.subtitle {
  color: #888;
  margin-bottom: 2rem;
}

button {
  background: #f6821f;
  color: #fff;
  border: none;
  padding: 0.8rem 2rem;
  font-size: 1.1rem;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s;
}

button:hover {
  background: #e06b10;
}

.result {
  margin-top: 1.5rem;
  padding: 1.2rem;
  background: #1a1a3e;
  border-radius: 8px;
  font-family: monospace;
  font-size: 1.1rem;
  border: 1px solid #333;
}

.result.error {
  border-color: #e74c3c;
  color: #e74c3c;
}

.loading {
  margin-top: 1rem;
  color: #888;
}

.hidden {
  display: none;
}