:root {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color-scheme: light dark;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f5f5f5;
}

.container {
  width: 100%;
  max-width: 480px;
  padding: 2rem;
}

.card {
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  padding: 2rem;
}

.subtitle {
  margin-top: 0;
  color: #555;
}

.status {
  padding: 0.75rem 1rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.status.info {
  background: #eef4ff;
  color: #1f4ed8;
}

.status.success {
  background: #ecfdf3;
  color: #087443;
}

.status.error {
  background: #fef2f2;
  color: #9f1239;
}

.panel {
  margin-bottom: 2rem;
}

label {
  display: block;
  font-size: 0.9rem;
  color: #333;
  margin-bottom: 0.5rem;
}

input {
  width: 100%;
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid #d1d5db;
  margin-bottom: 1rem;
  font-size: 1rem;
}

button {
  width: 100%;
  padding: 0.75rem;
  background: #2563eb;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
}

button:hover {
  background: #1d4ed8;
}

.hidden {
  display: none;
}

.result {
  background: #111827;
  color: #f9fafb;
  padding: 1rem;
  border-radius: 8px;
  overflow-x: auto;
}