body {
  font-family: Arial, sans-serif;
  background-color: #0f172a;
  color: #f8fafc;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
}

.container {
  background: #1e293b;
  padding: 2rem;
  border-radius: 12px;
  width: 90%;
  max-width: 500px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

.input-group, .token-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 1rem;
}

.input-group {
  flex-direction: row;
}

input {
  flex: 1;
  padding: 10px;
  border-radius: 6px;
  border: 1px solid #334155;
  background: #0f172a;
  color: white;
}

button {
  padding: 10px 16px;
  border: none;
  border-radius: 6px;
  background: #2563eb;
  color: white;
  cursor: pointer;
  font-weight: bold;
}

button:disabled {
  background: #475569;
  cursor: not-allowed;
}

.output-container {
  margin-top: 1.5rem;
  text-align: center;
}

img {
  max-width: 100%;
  border-radius: 8px;
}

.hidden {
  display: none;
}

.error-text {
  color: #ef4444;
  font-size: 0.9rem;
}

small {
  color: #94a3b8;
}