:root {
  --bg: #0e1116;
  --fg: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --border: #30363d;
  --error: #f85149;
  --ok: #3fb950;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--fg); font-family: ui-sans-serif, system-ui, -apple-system, sans-serif; }
.card { max-width: 880px; margin: 32px auto; padding: 24px; background: #161b22; border: 1px solid var(--border); border-radius: 8px; }
h1 { margin-top: 0; font-size: 22px; }
h2 { font-size: 16px; margin: 16px 0 8px; color: var(--accent); }
.row { display: flex; gap: 8px; align-items: end; }
label { display: flex; flex-direction: column; font-size: 12px; color: var(--muted); }
input, select { background: #0d1117; color: var(--fg); border: 1px solid var(--border); border-radius: 4px; padding: 6px 8px; font: inherit; }
input { flex: 1; min-width: 220px; }
button { background: var(--accent); color: #0d1117; border: 0; border-radius: 4px; padding: 8px 16px; font-weight: 600; cursor: pointer; }
button:disabled { opacity: 0.5; cursor: wait; }
.status { margin-top: 12px; padding: 8px; border-radius: 4px; }
.status.error { background: rgba(248,81,73,0.1); color: var(--error); border: 1px solid rgba(248,81,73,0.4); }
.summary { color: var(--muted); font-size: 13px; margin-top: 12px; }
#trace-list { padding-left: 0; list-style: none; }
#trace-list li { border-left: 2px solid var(--accent); padding: 6px 10px; margin: 6px 0; background: #0d1117; border-radius: 0 4px 4px 0; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
#trace-list .step-head { color: var(--accent); }
#trace-list .step-meta { color: var(--muted); font-size: 12px; }
table { width: 100%; border-collapse: collapse; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: normal; }