:root {
  color-scheme: dark;
  --bg: #0a0d12;
  --panel: #11151c;
  --panel2: #161b23;
  --line: #232a34;
  --text: #e6edf3;
  --muted: #8b96a5;
  --accent: #4f8cff;
  --green: #3fb950;
  --amber: #d29922;
  --red: #f85149;
  --purple: #a371f7;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 14px/1.55 system-ui, -apple-system, "Segoe UI", sans-serif; }

.topbar {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 12px 20px; border-bottom: 1px solid var(--line);
  position: sticky; top: 0; background: rgba(10,13,18,.9); backdrop-filter: blur(8px); z-index: 5;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand h1 { font-size: 16px; margin: 0; letter-spacing: .2px; }
.brand .sub { color: var(--muted); font-size: 12px; }
.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 10px var(--accent); }
.badges { display: flex; gap: 8px; flex-wrap: wrap; margin-left: auto; }
.badge { font-size: 12px; padding: 3px 9px; border-radius: 20px; border: 1px solid var(--line); background: var(--panel2); }
.badge.on { border-color: var(--green); color: var(--green); }
.badge.off { color: var(--muted); }

main { max-width: 1400px; margin: 0 auto; padding: 20px; }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 18px; }
.field { margin-bottom: 14px; }
.field > label { display: block; font-size: 13px; margin-bottom: 6px; color: var(--text); }
.muted { color: var(--muted); font-weight: 400; }
textarea, input, select, button { font: inherit; }
textarea, input[type=text], input[type=number], select {
  width: 100%; background: var(--panel2); color: var(--text);
  border: 1px solid var(--line); border-radius: 8px; padding: 9px 11px; resize: vertical;
}
.row { display: flex; align-items: center; gap: 12px; margin: 4px 0 6px; }
.inline { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); white-space: nowrap; }
.inline input, .inline select { width: auto; }
.spacer, .grow { flex: 1; }

button { cursor: pointer; border-radius: 8px; border: 1px solid var(--line); background: var(--panel2); color: var(--text); padding: 9px 14px; transition: .12s; }
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
button.primary:hover { filter: brightness(1.08); }
button.primary:disabled { opacity: .55; cursor: default; filter: none; }

/* ---- model builder: searchable combobox ---- */
.builder-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 6px; }
.builder-head label { margin: 0; }
.builder-head .cap { margin-left: auto; }
.cap input[type=checkbox] { accent-color: var(--accent); }

/* two side-by-side slot pickers */
.slots { display: flex; gap: 14px; align-items: stretch; }
.slot {
  flex: 1 1 0; min-width: 0; background: var(--panel2); border: 1px solid var(--line);
  border-radius: 10px; padding: 12px; display: flex; flex-direction: column; gap: 8px;
}
.slot-head { font-size: 11px; text-transform: uppercase; letter-spacing: .07em; color: var(--muted); }
.slot select.slot-provider { width: 100%; background: var(--panel); }
.slot .slot-search { background: var(--panel); }
.slot-vs { align-self: center; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
.slot-empty {
  border: 1px dashed var(--line); border-radius: 10px; padding: 14px;
  color: var(--muted); font-size: 12.5px; text-align: center;
}

.combo { position: relative; }
.combo-list {
  position: absolute; top: calc(100% + 4px); left: 0; right: 0; z-index: 20;
  max-height: 340px; overflow-y: auto;
  background: var(--panel2); border: 1px solid var(--line); border-radius: 10px;
  box-shadow: 0 12px 32px rgba(0,0,0,.5);
}
.combo-list.hidden { display: none; }
.combo-group {
  position: sticky; top: 0; padding: 6px 12px; font-size: 11px; text-transform: uppercase;
  letter-spacing: .07em; color: var(--muted); background: var(--panel); border-bottom: 1px solid var(--line);
}
.combo-row {
  display: flex; align-items: center; gap: 10px; padding: 7px 12px; cursor: pointer;
  border-bottom: 1px solid rgba(35,42,52,.5); font-size: 13px;
}
.combo-row:hover { background: rgba(79,140,255,.10); }
.combo-row.added { opacity: .55; }
.cr-name { font-weight: 550; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 0 1 auto; }
.cr-scores { display: flex; gap: 5px; flex: 1; justify-content: flex-end; flex-wrap: nowrap; overflow: hidden; }
.cr-price { color: var(--muted); font-size: 11.5px; white-space: nowrap; text-align: right; min-width: 118px; }
.cr-add { color: var(--accent); font-size: 11.5px; white-space: nowrap; min-width: 52px; text-align: right; }
.combo-row.added .cr-add { color: var(--green); }
.combo-empty { padding: 10px 12px; color: var(--muted); font-size: 12.5px; }

.score {
  font-size: 10.5px; padding: 1px 6px; border-radius: 10px; white-space: nowrap;
  border: 1px solid var(--line); color: var(--purple); background: rgba(163,113,247,.08);
}
.score.none { color: var(--muted); border-style: dashed; background: none; }

/* ---- picked model card (inside a slot) ---- */
.card {
  background: var(--panel); border: 1px solid var(--accent); border-radius: 10px;
  padding: 8px 10px;
}
.card-top { display: flex; align-items: baseline; gap: 8px; }
.card-name { font-weight: 600; font-size: 13px; overflow-wrap: anywhere; }
.card-x { margin-left: auto; border: none; background: none; color: var(--muted); font-size: 15px; padding: 0 2px; line-height: 1; }
.card-x:hover { color: var(--red); }
.card-meta { display: flex; gap: 8px; font-size: 11px; color: var(--muted); margin-top: 2px; flex-wrap: wrap; }
.card-scores { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 5px; }

/* ---- side-by-side output columns ---- */
.outputs { margin-top: 20px; }
.outputs.hidden, .results.hidden, .hidden { display: none; }

.blind-bar {
  display: flex; align-items: center; gap: 12px; margin-bottom: 10px;
  padding: 8px 12px; border: 1px solid var(--purple); border-radius: 10px;
  background: rgba(163,113,247,.08); color: var(--text); font-size: 13px;
}
.blind-bar button { margin-left: auto; color: var(--purple); border-color: var(--purple); }

.cursor { color: var(--accent); animation: blink 1s steps(2) infinite; }
@keyframes blink { 50% { opacity: 0; } }

.col-stats .act { padding: 2px 8px; font-size: 11px; }

/* markdown inside responses */
.md p { margin: 0 0 10px; }
.md p:last-child { margin-bottom: 0; }
.md ul, .md ol { margin: 0 0 10px; padding-left: 22px; }
.md li { margin: 2px 0; }
.md .md-h { margin: 12px 0 6px; font-size: 13.5px; }
.md hr { border: none; border-top: 1px solid var(--line); margin: 10px 0; }
.md a { color: var(--accent); }
.md .md-inline { background: rgba(79,140,255,.12); padding: 1px 5px; border-radius: 5px; font-size: 12px; }
.md .md-code {
  background: #0c1017; border: 1px solid var(--line); border-radius: 8px;
  padding: 10px 12px; overflow-x: auto; margin: 0 0 10px;
  font-size: 12px; line-height: 1.5;
}
.md .md-code code { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }
.cols { display: flex; gap: 12px; overflow-x: auto; padding-bottom: 6px; }
.col {
  flex: 1 0 300px; max-width: 480px; display: flex; flex-direction: column;
  background: var(--panel); border: 1px solid var(--line); border-radius: 12px; overflow: hidden;
}
.col-head {
  display: flex; align-items: center; gap: 8px; padding: 10px 12px;
  background: var(--panel2); border-bottom: 1px solid var(--line);
}
.col-title { display: flex; flex-direction: column; min-width: 0; }
.col-title .m { font-weight: 600; font-size: 13px; overflow-wrap: anywhere; }
.col-title .p { font-size: 11px; color: var(--muted); }
.col-head .pill { margin-left: auto; flex-shrink: 0; }
.col-text {
  padding: 12px; white-space: pre-wrap; word-break: break-word; color: #cdd6e0;
  font-size: 13px; overflow-y: auto; max-height: 420px; flex: 1;
}
.col-wait { padding: 24px 12px; color: var(--muted); font-size: 13px; text-align: center; flex: 1; }
.err-detail { color: var(--red); }
.col-stats {
  display: flex; gap: 10px; flex-wrap: wrap; padding: 8px 12px;
  border-top: 1px solid var(--line); background: var(--panel2);
  font-size: 11.5px; color: var(--muted); font-variant-numeric: tabular-nums;
}

/* ---- metrics table ---- */
.results { margin-top: 20px; }
.results-head { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; flex-wrap: wrap; }
.results-head h2 { font-size: 15px; margin: 0; }
.leaders { display: flex; gap: 8px; flex-wrap: wrap; }
.leader { font-size: 11.5px; padding: 3px 9px; border-radius: 16px; border: 1px solid var(--line); }
.leader.fast { border-color: var(--green); color: var(--green); }
.leader.cheap { border-color: var(--accent); color: var(--accent); }

.table-scroll { overflow-x: auto; border: 1px solid var(--line); border-radius: 10px; }
table { border-collapse: collapse; width: 100%; min-width: 680px; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); }
th { font-size: 11.5px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); background: var(--panel2); position: sticky; top: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr:last-child td { border-bottom: none; }
.model-cell { display: flex; flex-direction: column; }
.model-cell .m { font-weight: 600; }
.model-cell .p { font-size: 11px; color: var(--muted); }
.pill { font-size: 11px; padding: 2px 8px; border-radius: 12px; display: inline-block; }
.pill.ok { background: rgba(63,185,80,.15); color: var(--green); }
.pill.err { background: rgba(248,81,73,.15); color: var(--red); }
.pill.run { background: rgba(210,153,34,.15); color: var(--amber); }
.best { color: var(--green); font-weight: 700; }
.disclaimer { color: var(--muted); font-size: 12px; margin: 10px 2px 0; }
.disclaimer code { background: var(--panel2); padding: 1px 5px; border-radius: 5px; }
.spin { display: inline-block; width: 12px; height: 12px; border: 2px solid var(--line); border-top-color: var(--amber); border-radius: 50%; animation: spin .7s linear infinite; vertical-align: -2px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- run history ---- */
.history { margin-top: 20px; }
.history summary {
  cursor: pointer; color: var(--muted); font-size: 13px; padding: 8px 4px;
  user-select: none;
}
.hist-row {
  display: flex; gap: 12px; align-items: baseline; padding: 7px 10px;
  border: 1px solid var(--line); border-radius: 8px; margin: 6px 0;
  background: var(--panel); cursor: pointer; font-size: 12.5px; min-width: 0;
}
.hist-row:hover { border-color: var(--accent); }
.hist-when { color: var(--muted); white-space: nowrap; font-size: 11.5px; }
.hist-models { font-weight: 600; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 34%; }
.hist-prompt { color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }

.builder-head #addSlot { padding: 3px 9px; font-size: 12px; }
.inline.blind input { accent-color: var(--purple); }

@media (max-width: 720px) {
  .cols { flex-direction: column; }
  .col { flex-basis: auto; max-width: none; }
  .builder-head .cap { margin-left: 0; }
  .slots { flex-direction: column; }
  .slot-vs { align-self: flex-start; }
}