:root {
  --bg: #0f172a;
  --surface: #111827;
  --panel: #1f2937;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #14b8a6;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  background: linear-gradient(180deg, #020617 0%, #111827 100%);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

main {
  width: 100%;
  max-width: 480px;
}

.card {
  background: var(--panel);
  border-radius: 14px;
  box-shadow: 0 14px 30px rgba(0, 0, 0, .32);
  padding: 1.1rem;
}

h1 {
  margin-top: 0;
  font-size: 1.45rem;
}

label {
  display: block;
  margin-bottom: .35rem;
  font-weight: 600;
}

select, button, input[type="text"], .status {
  width: 100%;
  padding: .8rem;
  border-radius: 10px;
  border: 1px solid #334155;
  background: #0b1220;
  color: var(--text);
}

.field {
  margin-bottom: .95rem;
}

button {
  background: linear-gradient(90deg, var(--accent), #06b6d4);
  border: none;
  font-weight: 800;
  letter-spacing: .04em;
  margin-top: .6rem;
}

button:disabled {
  opacity: .55;
}

.hint {
  color: var(--muted);
  font-size: .9rem;
  margin-top: .65rem;
}

.hidden {
  display: none;
}

.badge {
  display: inline-block;
  padding: .25rem .5rem;
  border-radius: 999px;
  font-size: .75rem;
  background: #0f766e;
  margin-top: .35rem;
}

pre {
  background: #020617;
  border: 1px solid #334155;
  border-radius: 10px;
  padding: .65rem;
  white-space: pre-wrap;
  word-break: break-word;
}