/* Dark theme (default) */
:root,
[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0e1116;
  --panel: #161b22;
  --panel2: #1c2230;
  --border: #2a313c;
  --fg: #e6edf3;
  --muted: #8b949e;
  --accent: #39d0d8;
  --accent-soft: rgba(57, 208, 216, 0.12);
  --on-accent: #0e1116;
  --add: #3fb950;
  --del: #f85149;
  --cache: #d29922;
  --shadow: rgba(0, 0, 0, 0.35);
  --header-glass: rgba(22, 27, 34, 0.92);
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

/* Light theme — fresh sky / mint */
[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f7fb;
  --panel: #ffffff;
  --panel2: #eef3f9;
  --border: #d5dee9;
  --fg: #1a2433;
  --muted: #5a6b82;
  --accent: #0d9488;
  --accent-soft: rgba(13, 148, 136, 0.1);
  --on-accent: #ffffff;
  --add: #16a34a;
  --del: #dc2626;
  --cache: #b45309;
  --shadow: rgba(26, 36, 51, 0.08);
  --header-glass: rgba(255, 255, 255, 0.88);
}

* { 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;
  transition: background 0.2s ease, color 0.2s ease;
}
header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 14px;
  background: var(--header-glass);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.logo { color: var(--accent); font-weight: 700; letter-spacing: .3px; }
.spacer { flex: 1; }
.badge {
  font-size: 11px; color: var(--on-accent); background: var(--accent);
  padding: 1px 7px; border-radius: 10px; font-weight: 600;
}
.badge.off { background: var(--muted); color: var(--on-accent); }
select, button {
  background: var(--panel2); color: var(--fg);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 4px 10px; font-size: 13px; cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}
select:hover, button:hover { border-color: var(--accent); }
button.on { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.theme-select { min-width: 5.5rem; font-size: 12px; }
.model-filter {
  max-width: 11rem; font-size: 12px;
  text-overflow: ellipsis;
}
.session-stats .scope {
  color: var(--accent); font-weight: 600; max-width: 8rem;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
main { flex: 1; display: flex; min-height: 0; }
aside {
  width: 320px; flex-shrink: 0; display: flex; flex-direction: column;
  min-height: 0; border-right: 1px solid var(--border); background: var(--panel);
}
#list { flex: 1; overflow-y: auto; min-height: 0; }
.session-stats {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
  font-size: 11px; color: var(--muted); font-family: var(--mono);
}
.session-stats span { white-space: nowrap; }
.session-stats b { color: var(--fg); font-weight: 600; }
.latency-trend {
  flex-shrink: 0; padding: 8px 10px 4px; border-bottom: 1px solid var(--border);
  background: var(--panel2);
}
.latency-trend .title {
  font-size: 10px; text-transform: uppercase; letter-spacing: .06em;
  color: var(--muted); margin-bottom: 6px;
}
.latency-trend .bars {
  display: flex; align-items: flex-end; gap: 2px; height: 36px;
}
.latency-trend .bar {
  flex: 1; min-width: 3px; max-width: 12px; background: var(--accent);
  border-radius: 2px 2px 0 0; opacity: .85;
}
.latency-trend .bar.pending { background: var(--muted); opacity: .35; }
.latency-trend .meta {
  margin-top: 4px; font-size: 10px; color: var(--muted); font-family: var(--mono);
}
.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(--accent-soft); 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: .9; }
.row .sub .latency { color: var(--cache); }
.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); background: color-mix(in srgb, var(--del) 6%, var(--panel)); }
.card.err-card .v { color: var(--del); }
.card.warn-card { border-color: var(--cache); background: color-mix(in srgb, var(--cache) 6%, var(--panel)); }
.card.warn-card .v { color: var(--cache); }
.card.timing-card { border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
#detail { flex: 1; overflow-y: auto; padding: 0; background: var(--bg); }
.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; z-index: 1;
}
.tab {
  padding: 6px 12px; border: 1px solid transparent; border-bottom: none;
  border-radius: 8px 8px 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: 10px;
  padding: 10px 14px; min-width: 120px; box-shadow: 0 1px 2px var(--shadow);
}
.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; }
.overview-section {
  font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: .05em;
  color: var(--muted); margin: 4px 0 8px; width: 100%;
}
.block {
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
  margin: 10px 0; overflow: hidden; box-shadow: 0 1px 2px var(--shadow);
}
.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: var(--on-accent); }
.tag.tool { background: var(--accent); color: var(--on-accent); }
.tag.result { background: var(--add); color: var(--on-accent); }
.tag.err { background: var(--del); color: var(--on-accent); }
.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; text-decoration: none; }
a.dl:hover { text-decoration: underline; }
.export-row { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 0; margin-bottom: 12px; }
button.dl.copy-curl {
  font-family: inherit; background: transparent; border: none; padding: 0;
  color: var(--accent); margin-right: 14px; cursor: pointer; font-size: inherit;
}
button.dl.copy-curl:hover { text-decoration: underline; }

/* ---- flow ---- */
.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); }
.step.tool_use, .step.skill, .step.tool_result {
  border-left: 2px solid hsl(var(--hue, 210) 55% 48%);
  background: hsl(var(--hue, 210) 55% 48% / 0.08);
  border-radius: 0 6px 6px 0; margin-left: -2px;
}
[data-theme="light"] .step.tool_use,
[data-theme="light"] .step.skill,
[data-theme="light"] .step.tool_result {
  background: hsl(var(--hue, 175) 45% 42% / 0.07);
}
.step.tool_use .dot, .step.skill .dot { color: hsl(var(--hue, 210) 55% 42%); }
.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: #a78bfa; color: var(--on-accent); }
[data-theme="light"] .tag.skill { background: #8b5cf6; color: #fff; }
.tag.latest { background: var(--accent); color: var(--on-accent); }
.tag.id { background: var(--panel2); color: var(--muted); }

/* ---- summary: cross-session usage rollup ---- */
.usage-table {
  width: 100%; border-collapse: collapse; margin-top: 12px;
  font-family: var(--mono); font-size: 12.5px;
}
.usage-table th, .usage-table td {
  padding: 6px 10px; border-bottom: 1px solid var(--border); text-align: left;
}
.usage-table thead th {
  color: var(--muted); font-weight: 600; text-transform: uppercase;
  font-size: 11px; letter-spacing: .4px;
  background: var(--panel2); position: sticky; top: 0;
}
.usage-table td.n, .usage-table th.n {
  text-align: right; font-variant-numeric: tabular-nums;
}
.usage-table tbody tr:hover { background: var(--panel2); }
.summary-body { margin-top: 4px; }