:root {
  --bg: #0d1117;
  --panel: #161b22;
  --border: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --green: #3fb950;
  --red: #f85149;
  --blue: #58a6ff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

header { padding: 20px 24px 8px; border-bottom: 1px solid var(--border); }
header h1 { margin: 0 0 4px; font-size: 22px; }
.muted { color: var(--muted); }
code { background: var(--panel); border: 1px solid var(--border); border-radius: 4px; padding: 0 4px; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; }
.chip {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 12.5px;
}
.chip b { color: var(--blue); font-weight: 600; margin-right: 4px; }

main { display: grid; grid-template-columns: 360px 1fr; gap: 0; min-height: calc(100vh - 210px); }
aside { border-right: 1px solid var(--border); padding: 16px; overflow-y: auto; max-height: 78vh; }
aside h2 { font-size: 15px; margin: 0 0 10px; }

#task-list { list-style: none; margin: 0; padding: 0; }
#task-list li {
  display: grid;
  grid-template-columns: 22px 1fr auto;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border-radius: 6px;
  cursor: pointer;
  border: 1px solid transparent;
}
#task-list li:hover { background: var(--panel); }
#task-list li.active { border-color: var(--blue); background: var(--panel); }
#task-list .tid { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; }
#task-list .mut { color: var(--muted); font-size: 11.5px; }
#task-list .badge { font-weight: 700; text-align: center; }
#task-list li.pass .badge { color: var(--green); }
#task-list li.fail .badge { color: var(--red); }

#detail { padding: 16px 24px; overflow-y: auto; max-height: 78vh; }
#detail h2 { margin: 0 0 6px; font-size: 18px; }
.symptom { color: var(--text); background: var(--panel); border-left: 3px solid var(--blue); padding: 8px 12px; border-radius: 4px; }
.verdict { font-size: 12px; border-radius: 4px; padding: 2px 8px; margin-left: 8px; vertical-align: middle; }
.verdict.ok { background: rgba(63, 185, 80, 0.15); color: var(--green); border: 1px solid var(--green); }
.verdict.bad { background: rgba(248, 81, 73, 0.15); color: var(--red); border: 1px solid var(--red); }

.steps { padding-left: 20px; }
.steps li { margin: 10px 0; }
.step-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.step-head .idx {
  display: inline-grid; place-items: center;
  width: 22px; height: 22px; border-radius: 50%;
  background: var(--panel); border: 1px solid var(--border); font-size: 12px;
}
.step-head .tok { color: var(--muted); font-size: 11.5px; margin-left: auto; }
details { margin: 4px 0 0 30px; }
summary { cursor: pointer; color: var(--muted); font-size: 12.5px; }
pre {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 8px 10px;
  overflow-x: auto;
  font-size: 12px;
  max-height: 260px;
  white-space: pre-wrap;
  word-break: break-word;
}

footer { border-top: 1px solid var(--border); padding: 10px 24px; font-size: 12.5px; }

@media (max-width: 860px) {
  main { grid-template-columns: 1fr; }
  aside { border-right: 0; border-bottom: 1px solid var(--border); max-height: 40vh; }
}