:root {
  --bg: #141920;
  --panel: #1c2230;
  --panel2: #232b3a;
  --border: #2d3748;
  --fg: #e2e8f0;
  --muted: #7a8599;
  --accent: #4ade80;
  --accent-dim: rgba(74, 222, 128, 0.12);
  --accent-border: rgba(74, 222, 128, 0.3);
  --add: #4ade80;
  --del: #f87171;
  --cache: #fbbf24;
  --blue: #60a5fa;
  --blue-dim: rgba(96, 165, 250, 0.12);
  --orange: #fb923c;
  --orange-dim: rgba(251, 146, 60, 0.12);
  --purple: #a78bfa;
  --purple-dim: rgba(167, 139, 250, 0.12);
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  --card-radius: 12px;
}

[data-theme="light"] {
  --bg: #f6f8fa;
  --panel: #ffffff;
  --panel2: #f0f2f5;
  --border: #d8dee4;
  --fg: #1f2328;
  --muted: #656d76;
  --accent: #16a34a;
  --accent-dim: rgba(22, 163, 74, 0.1);
  --accent-border: rgba(22, 163, 74, 0.3);
  --add: #16a34a;
  --del: #dc2626;
  --cache: #ca8a04;
  --blue: #2563eb;
  --blue-dim: rgba(37, 99, 235, 0.1);
  --orange: #ea580c;
  --orange-dim: rgba(234, 88, 12, 0.1);
  --purple: #7c3aed;
  --purple-dim: rgba(124, 58, 237, 0.1);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--fg);
  height: 100vh;
  display: flex;
  flex-direction: column;
}
header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.logo { color: var(--accent); font-weight: 700; letter-spacing: .3px; }
.spacer { flex: 1; }
.badge {
  font-size: 11px; color: #0e1116; background: var(--accent);
  padding: 2px 10px; border-radius: 10px; font-weight: 600;
}
.badge.off { background: var(--muted); }
.badge.pass { background: var(--accent-dim); color: var(--accent); border: 1px solid var(--accent-border); }
.badge.fail { background: rgba(248,113,113,0.12); color: var(--del); border: 1px solid rgba(248,113,113,0.3); }
select, button {
  background: var(--panel2); color: var(--fg);
  border: 1px solid var(--border); border-radius: 6px;
  padding: 4px 10px; font-size: 13px; cursor: pointer;
}
button:hover { border-color: var(--accent); }
button.on { background: var(--accent); color: #0e1116; border-color: var(--accent); }
main { flex: 1; display: flex; min-height: 0; }
aside {
  width: 320px; flex-shrink: 0; overflow-y: auto;
  border-right: 1px solid var(--border); background: var(--panel);
}
.row {
  padding: 8px 12px; border-bottom: 1px solid var(--border);
  cursor: pointer; display: flex; flex-direction: column; gap: 2px;
}
.row:hover { background: var(--panel2); }
.row.sel { background: var(--panel2); border-left: 3px solid var(--accent); padding-left: 9px; }
.row.pick { box-shadow: inset 3px 0 0 var(--cache); }
.row .top { display: flex; justify-content: space-between; font-family: var(--mono); font-size: 12px; }
.row .sub { color: var(--muted); font-size: 11px; }
.row .sub .time { color: var(--accent); opacity: .8; }
.row .sub .toolcalls { color: var(--cache); }
.row .seq { color: var(--accent); }
.pending { color: var(--cache); }
.status-txt-4xx { color: var(--cache); }
.status-txt-5xx { color: var(--del); }
.row.status-4xx { border-left: 3px solid var(--cache); padding-left: 9px; }
.row.status-5xx { border-left: 3px solid var(--del); padding-left: 9px; }
.retry-badge { color: var(--muted); }
.card.err-card { border-color: var(--del); }
.card.err-card .v { color: var(--del); }
.card.warn-card { border-color: var(--cache); }
.card.warn-card .v { color: var(--cache); }
#detail { flex: 1; overflow-y: auto; padding: 0; }
.empty { color: var(--muted); padding: 40px; text-align: center; }
.tabs { display: flex; gap: 2px; padding: 8px 14px 0; position: sticky; top: 0; background: var(--bg); border-bottom: 1px solid var(--border); flex-wrap: wrap; }
.tab { padding: 6px 12px; border: 1px solid transparent; border-bottom: none; border-radius: 6px 6px 0 0; color: var(--muted); }
.tab.on { color: var(--fg); background: var(--panel); border-color: var(--border); }
.pane { padding: 16px 18px; }
.cards { display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: var(--card-radius); padding: 14px 18px; min-width: 120px; }
.card .k { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .4px; }
.card .v { font-size: 20px; font-weight: 700; font-family: var(--mono); }
.card .v small { font-size: 12px; color: var(--muted); font-weight: 400; }
.block { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; margin: 10px 0; overflow: hidden; }
.block > .h {
  display: flex; justify-content: space-between; align-items: center;
  padding: 6px 12px; background: var(--panel2); font-family: var(--mono); font-size: 12px; color: var(--muted);
}
.block pre {
  margin: 0; padding: 12px; white-space: pre-wrap; word-break: break-word;
  font-family: var(--mono); font-size: 12.5px; max-height: 460px; overflow: auto;
}
.tag { font-size: 10px; padding: 1px 6px; border-radius: 8px; margin-left: 6px; font-family: var(--mono); }
.tag.cache { background: var(--cache); color: #0e1116; }
.tag.tool { background: var(--accent); color: #0e1116; }
.tag.result { background: var(--add); color: #0e1116; }
.tag.err { background: var(--del); color: #0e1116; }
.tag.id { letter-spacing: .3px; }
.block details > summary {
  cursor: pointer; padding: 12px; color: var(--muted);
  font-family: var(--mono); font-size: 12.5px; white-space: pre-wrap; word-break: break-word;
}
.block details[open] > summary { border-bottom: 1px solid var(--border); }
.block details > summary .more { color: var(--accent); }
.block details > summary::-webkit-details-marker { display: none; }
.block details.fold > summary .hide { display: none; }
.block details.fold[open] > summary .show { display: none; }
.block details.fold[open] > summary .hide { display: inline; }
.block details > pre { border-top: none; }
.diff-add { border-left: 3px solid var(--add); }
.diff-del { border-left: 3px solid var(--del); opacity: .7; }
.diff-section { margin: 18px 0 8px; font-weight: 700; }
.diff-section.add { color: var(--add); }
.diff-section.del { color: var(--del); }
kbd { font-family: var(--mono); background: var(--panel2); border: 1px solid var(--border); border-radius: 4px; padding: 0 5px; font-size: 11px; }
a.dl { color: var(--accent); margin-right: 14px; }

/* ---- flow: conversation-level sequence diagram ---- */
.flow .toolmenu { margin: 0 0 12px; }
.timeline { position: relative; padding: 4px 0; }
.timeline::before {
  content: ""; position: absolute; left: 8px; top: 8px; bottom: 8px;
  width: 2px; background: var(--border);
}
.step { position: relative; display: flex; gap: 10px; padding: 5px 0 5px 26px; }
.step.indent { padding-left: 50px; }
.step .dot {
  position: absolute; left: 0; top: 5px; width: 18px; text-align: center;
  font-size: 12px; color: var(--accent);
}
.step.indent .dot { left: 24px; }
.step.user .dot { color: var(--cache); }
.step.stop .dot { color: var(--muted); }
.step .node { flex: 1; min-width: 0; }
.step .lead { font-family: var(--mono); font-size: 12.5px; }
.step .lead b { color: var(--accent); }
.step .prev { color: var(--muted); font-size: 12px; font-family: var(--mono); }
/* paired tool_use ⇄ tool_result: same hue from the call_id */
.step.tool_use, .step.skill, .step.tool_result {
  border-left: 2px solid hsl(var(--hue, 210) 60% 48%);
  background: hsl(var(--hue, 210) 60% 48% / 0.07);
  border-radius: 0 6px 6px 0; margin-left: -2px;
}
.step.tool_use .dot, .step.skill .dot { color: hsl(var(--hue, 210) 70% 66%); }
.step .step-body { background: none; border: none; margin: 2px 0 0; }
.step .step-body > summary { padding: 0; }
.step .step-body > pre {
  margin: 4px 0 0; padding: 8px 10px; background: var(--panel2);
  border-radius: 6px; max-height: 320px; overflow: auto;
  white-space: pre-wrap; word-break: break-word;
  font-family: var(--mono); font-size: 12px;
}
.tag.skill { background: #b48ead; color: #0e1116; }
.tag.latest { background: var(--accent); color: #0e1116; }
.tag.id { background: var(--panel2); color: var(--muted); }