:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel2: #1e222b;
  --border: #2a2f3a;
  --text: #e6e8ec;
  --muted: #8b93a1;
  --claude: #c15f3c;
  --codex: #10a37f;
  --judge: #8b7be8;
  --primary: #3b82f6;
  --danger: #ef4444;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px; border-bottom: 1px solid var(--border); background: var(--panel);
}
.brand { font-weight: 700; font-size: 16px; }
.brand .sub { color: var(--muted); font-weight: 400; font-size: 13px; margin-left: 6px; }
.conn { display: flex; align-items: center; gap: 8px; color: var(--muted); }
.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; }
.dot.off { background: #555; }
.dot.ok { background: #22c55e; }
.dot.bad { background: var(--danger); }

button { cursor: pointer; border-radius: 7px; border: 1px solid var(--border);
  padding: 7px 13px; font-size: 13px; color: var(--text); background: var(--panel2); }
button:hover { border-color: #3a4150; }
button:disabled { opacity: .45; cursor: not-allowed; }
button.primary { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
button.danger { background: transparent; border-color: var(--danger); color: #ff8a8a; }
button.ghost { background: transparent; }

.settings { padding: 14px 18px; border-bottom: 1px solid var(--border); background: var(--panel); }
.settings .grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.settings label, .form label, .stances label, .opts label { display: flex; flex-direction: column;
  gap: 4px; font-size: 12px; color: var(--muted); }
.settings input, .settings select, .form input, .stances input, .opts input, .opts select {
  background: var(--panel2); border: 1px solid var(--border); border-radius: 6px;
  padding: 8px; color: var(--text); font-size: 13px; }
.hint { color: var(--muted); font-size: 12px; margin-top: 10px; }

.tabs { display: flex; gap: 4px; padding: 10px 18px 0; }
.tab { border-bottom: 2px solid transparent; border-radius: 6px 6px 0 0; background: transparent; }
.tab.active { color: #fff; border-bottom-color: var(--primary); background: var(--panel); }

.tab-panel { padding: 16px 18px; }
.prompt { width: 100%; min-height: 96px; resize: vertical; background: var(--panel2);
  border: 1px solid var(--border); border-radius: 8px; padding: 11px; color: var(--text);
  font-size: 14px; font-family: inherit; }
.row { display: flex; align-items: center; gap: 10px; margin: 12px 0; }
.status { color: var(--muted); font-size: 12px; margin-left: auto; }

.panes { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.pane { border: 1px solid var(--border); border-radius: 10px; overflow: hidden; background: var(--panel); }
.pane-head { padding: 9px 13px; font-weight: 600; border-bottom: 1px solid var(--border);
  font-size: 13px; }
.pane-head.claude { color: var(--claude); }
.pane-head.codex { color: var(--codex); }
.pane-body { margin: 0; padding: 13px; min-height: 240px; white-space: pre-wrap;
  word-break: break-word; font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 13px; line-height: 1.5; }
.pane-body.err { color: #ff9a9a; }

.form { display: flex; flex-direction: column; gap: 12px; }
.form .wide input { width: 100%; }
.stances, .opts { display: flex; gap: 14px; flex-wrap: wrap; }
.stances label { flex: 1; min-width: 220px; }
.opts label { min-width: 90px; }
.opts .check { flex-direction: row; align-items: center; gap: 7px; color: var(--text);
  align-self: flex-end; }

.debate-view { border: 1px solid var(--border); border-radius: 10px; background: var(--panel);
  padding: 8px 16px; min-height: 300px; max-height: 62vh; overflow-y: auto; }
.turn { padding: 11px 0; border-bottom: 1px solid var(--border); }
.turn:last-child { border-bottom: none; }
.turn .head { font-weight: 700; font-size: 13px; margin-bottom: 5px; }
.turn .head .meta { color: var(--muted); font-weight: 400; font-size: 12px; margin-left: 8px; }
.turn.claude .head { color: var(--claude); }
.turn.codex .head { color: var(--codex); }
.turn.judge .head { color: var(--judge); }
.turn .body { white-space: pre-wrap; word-break: break-word; line-height: 1.55; }
.turn .body.err { color: #ff9a9a; }
.turn .body.pending { color: var(--muted); font-style: italic; }
.intro { color: var(--muted); font-size: 13px; padding: 10px 0; border-bottom: 1px solid var(--border); }

.hidden { display: none !important; }

@media (max-width: 760px) {
  .settings .grid { grid-template-columns: 1fr; }
  .panes { grid-template-columns: 1fr; }
}