:root {
  --bg: #0f1115;
  --card: #181a21;
  --border: #262a33;
  --text: #e8eaed;
  --muted: #9aa3b2;
  --accent: #7c5cff;
  --accent-hover: #6747ff;
  --ok: #34d399;
  --err: #f87171;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, sans-serif;
  line-height: 1.5;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1rem 4rem;
}

header {
  text-align: center;
  margin-bottom: 2rem;
}
header h1 { margin: 0 0 0.25rem; font-size: 1.8rem; }
.tagline { color: var(--muted); margin: 0; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
}
.card h2 { margin-top: 0; font-size: 1.1rem; }
.card.error { border-color: var(--err); }

.row {
  display: flex;
  justify-content: space-between;
  padding: 0.4rem 0;
  border-bottom: 1px dashed var(--border);
  font-size: 0.95rem;
}
.row:last-child { border-bottom: none; }
.label { color: var(--muted); }
.value.mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 0.85rem; }

textarea {
  width: 100%;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem;
  font-family: inherit;
  font-size: 0.95rem;
  resize: vertical;
}

button {
  background: var(--accent);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 0.65rem 1.1rem;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  margin-top: 0.75rem;
  transition: background 0.15s ease;
}
button:hover:not(:disabled) { background: var(--accent-hover); }
button:disabled { opacity: 0.5; cursor: not-allowed; }

.status { color: var(--muted); margin: 0.5rem 0 0; font-size: 0.9rem; }

.progress { margin-top: 1rem; }
.progress ol { padding-left: 1.25rem; margin: 0; color: var(--muted); }
.progress li { padding: 0.15rem 0; }
.progress li.active { color: var(--text); }
.progress li.done { color: var(--ok); }
.progress li.done::before { content: "✓ "; }
.progress li.fail { color: var(--err); }
.progress li.fail::before { content: "✗ "; }

pre {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1rem;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.9rem;
}

.meta { color: var(--muted); font-size: 0.85rem; }
.meta a { color: var(--accent); }

footer {
  margin-top: 2rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
}
footer a { color: var(--accent); }

.hidden { display: none; }