:root {
  color-scheme: light;
  --ink: #171918;
  --ink-soft: #5e645f;
  --paper: #f7f8f5;
  --surface: #ffffff;
  --line: #dfe3dd;
  --line-strong: #c8cec7;
  --green: #12835f;
  --green-soft: #e4f3ec;
  --blue: #275dad;
  --blue-soft: #e8eef8;
  --amber: #a06008;
  --amber-soft: #f8eedc;
  --red: #b33c32;
  --sidebar: #171918;
  --sidebar-muted: #aeb5af;
  --sidebar-line: #303430;
  --radius: 6px;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  letter-spacing: 0;
}

button, input, select { font: inherit; letter-spacing: 0; }
button { cursor: pointer; }

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 10;
  display: flex;
  width: 232px;
  flex-direction: column;
  background: var(--sidebar);
  color: #f5f7f4;
  border-right: 1px solid #232623;
}

.brand {
  display: flex;
  min-height: 76px;
  align-items: center;
  gap: 12px;
  padding: 0 20px;
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--sidebar-line);
}

.brand-mark {
  position: relative;
  display: grid;
  width: 34px;
  height: 34px;
  grid-template-columns: repeat(3, 1fr);
  align-items: end;
  gap: 3px;
  padding: 6px;
  background: #f3f8f3;
  border-radius: 5px;
}

.brand-mark span { display: block; background: var(--green); border-radius: 1px; }
.brand-mark span:nth-child(1) { height: 9px; }
.brand-mark span:nth-child(2) { height: 20px; background: var(--blue); }
.brand-mark span:nth-child(3) { height: 14px; background: #d38a1d; }
.brand-copy { display: grid; gap: 2px; }
.brand-copy strong { font-size: 15px; }
.brand-copy small { color: var(--sidebar-muted); font-size: 11px; }

.primary-nav { display: grid; gap: 4px; padding: 20px 12px; }
.nav-item {
  display: flex;
  min-height: 42px;
  align-items: center;
  gap: 11px;
  padding: 0 12px;
  color: var(--sidebar-muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: 5px;
  text-align: left;
}
.nav-item svg, .sidebar-foot svg { width: 17px; height: 17px; }
.nav-item:hover { color: #fff; background: #222622; }
.nav-item.active { color: #fff; background: #262b27; border-color: #353b36; }

.sidebar-foot {
  display: grid;
  gap: 14px;
  margin-top: auto;
  padding: 18px 20px 22px;
  border-top: 1px solid var(--sidebar-line);
  color: var(--sidebar-muted);
  font-size: 12px;
}
.sidebar-foot a, .live-state { display: flex; align-items: center; gap: 9px; color: inherit; text-decoration: none; }
.sidebar-foot a:hover { color: #fff; }
.pulse { width: 8px; height: 8px; background: #40d39b; border-radius: 50%; box-shadow: 0 0 0 3px rgb(64 211 155 / 12%); }

.workspace { min-height: 100vh; margin-left: 232px; }
.topbar {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: space-between;
  padding: 12px 28px;
  background: rgb(247 248 245 / 94%);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 8;
  backdrop-filter: blur(12px);
}
.eyebrow, .section-heading p, .answer-block > p {
  margin: 0 0 4px;
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 700;
}
.topbar h1 { margin: 0; font-size: 21px; line-height: 1.2; }
.topbar-actions { display: flex; align-items: center; gap: 10px; }
.version { color: var(--ink-soft); font-size: 12px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.icon-button, .copy-button {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  color: var(--ink-soft);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 5px;
}
.icon-button:hover, .copy-button:hover { color: var(--ink); border-color: #909890; }
.icon-button svg, .copy-button svg { width: 16px; height: 16px; }

.view { display: none; padding: 24px 28px 40px; }
.view.active { display: block; }

.metric-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.metric-strip > div { display: grid; gap: 3px; min-height: 72px; align-content: center; padding: 0 18px; border-right: 1px solid var(--line); }
.metric-strip > div:last-child { border-right: 0; }
.metric-strip span { color: var(--ink-soft); font-size: 11px; }
.metric-strip strong { font-size: 17px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.run-composer { display: grid; grid-template-columns: minmax(220px, 1fr) 170px auto; gap: 10px; margin: 18px 0 22px; }
.composer-field { position: relative; }
.composer-field svg { position: absolute; left: 13px; top: 50%; width: 16px; transform: translateY(-50%); color: var(--ink-soft); }
.composer-field input, .run-composer select {
  width: 100%;
  height: 42px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  outline: none;
}
.composer-field input { padding: 0 14px 0 40px; }
.run-composer select { padding: 0 34px 0 12px; }
.composer-field input:focus, .run-composer select:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgb(39 93 173 / 10%); }
.primary-button {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 16px;
  color: #fff;
  background: var(--ink);
  border: 1px solid var(--ink);
  border-radius: 5px;
  font-weight: 700;
}
.primary-button:hover { background: #2c302d; }
.primary-button:disabled { opacity: .55; cursor: progress; }
.primary-button svg { width: 15px; height: 15px; }

.trace-layout { display: grid; grid-template-columns: 230px minmax(420px, 1fr) minmax(240px, 310px); min-height: 590px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.trace-layout > * { min-width: 0; }
.run-rail, .trace-main { border-right: 1px solid var(--line); }
.section-heading { display: flex; min-height: 68px; align-items: center; justify-content: space-between; padding: 0 16px; border-bottom: 1px solid var(--line); }
.section-heading h2 { margin: 0; font-size: 14px; }
.count { display: grid; min-width: 26px; height: 22px; place-items: center; color: var(--ink-soft); background: var(--paper); border: 1px solid var(--line); border-radius: 11px; font-size: 11px; }
.run-list { max-height: 660px; overflow: auto; }
.run-item {
  display: grid;
  width: 100%;
  gap: 9px;
  padding: 15px 16px;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--line);
  text-align: left;
}
.run-item:hover { background: #fafbf8; }
.run-item.active { background: #f0f5f1; box-shadow: inset 3px 0 var(--green); }
.run-item-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.run-item code { color: var(--ink-soft); font-size: 11px; }
.run-item p { margin: 0; display: -webkit-box; overflow: hidden; -webkit-line-clamp: 2; -webkit-box-orient: vertical; line-height: 1.45; }
.run-item small { color: var(--ink-soft); }
.run-dot { width: 8px; height: 8px; flex: 0 0 auto; border-radius: 50%; background: var(--amber); }
.run-dot.completed { background: var(--green); }
.run-dot.failed { background: var(--red); }

.trace-header { display: flex; min-height: 108px; align-items: center; justify-content: space-between; gap: 20px; padding: 16px 20px; border-bottom: 1px solid var(--line); }
.trace-header-actions { display: flex; align-items: center; gap: 10px; }
.run-id-line { display: flex; align-items: center; gap: 6px; }
.run-id-line code { color: var(--green); font-size: 11px; font-weight: 700; }
.copy-button { width: 26px; height: 26px; background: transparent; border-color: transparent; }
.trace-header h2 { max-width: 660px; margin: 7px 0 0; font-size: 15px; line-height: 1.45; }
.status { display: inline-flex; align-items: center; min-height: 26px; padding: 0 9px; border-radius: 13px; color: var(--amber); background: var(--amber-soft); font-size: 11px; font-weight: 700; }
.status.completed { color: var(--green); background: var(--green-soft); }
.status.failed { color: var(--red); background: #f8e6e4; }

.trace-controls { display: flex; min-height: 52px; align-items: center; justify-content: space-between; gap: 12px; padding: 8px 20px; border-bottom: 1px solid var(--line); }
.segmented { display: inline-flex; padding: 3px; background: var(--paper); border: 1px solid var(--line); border-radius: 5px; }
.segmented button { min-height: 28px; padding: 0 11px; color: var(--ink-soft); background: transparent; border: 0; border-radius: 3px; font-size: 11px; }
.segmented button.active { color: var(--ink); background: var(--surface); box-shadow: 0 1px 3px rgb(0 0 0 / 8%); }
.trace-summary { display: flex; gap: 14px; color: var(--ink-soft); font: 11px ui-monospace, SFMono-Regular, Menlo, monospace; }

.timeline { position: relative; min-height: 420px; padding: 10px 20px 28px; }
.timeline::before { content: ""; position: absolute; top: 26px; bottom: 28px; left: 34px; width: 1px; background: var(--line-strong); }
.event-row { position: relative; display: grid; grid-template-columns: 29px minmax(0, 1fr) auto; gap: 10px; min-height: 70px; padding: 12px 0; }
.event-node { z-index: 1; display: grid; width: 29px; height: 29px; place-items: center; color: var(--ink-soft); background: var(--surface); border: 1px solid var(--line-strong); border-radius: 50%; }
.event-node.model { color: var(--blue); border-color: #9eb5da; background: var(--blue-soft); }
.event-node.tool { color: var(--amber); border-color: #dbbd8f; background: var(--amber-soft); }
.event-node.run { color: var(--green); border-color: #8fc6af; background: var(--green-soft); }
.event-node svg { width: 14px; height: 14px; }
.event-body { min-width: 0; padding-top: 2px; }
.event-title { display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px; }
.event-title strong { font-size: 12px; }
.event-title code { color: var(--ink-soft); font-size: 10px; }
.event-detail { max-width: 680px; margin: 6px 0 0; color: var(--ink-soft); font-size: 12px; line-height: 1.5; overflow-wrap: anywhere; }
.event-time { padding-top: 3px; color: var(--ink-soft); font: 10px ui-monospace, SFMono-Regular, Menlo, monospace; white-space: nowrap; }
.empty-state { display: grid; min-height: 320px; place-items: center; color: var(--ink-soft); }

.inspector { background: #fbfcfa; }
.run-facts { display: grid; grid-template-columns: auto 1fr; gap: 10px 12px; margin: 0; padding: 18px 16px; border-bottom: 1px solid var(--line); font-size: 12px; }
.run-facts dt { color: var(--ink-soft); }
.run-facts dd { margin: 0; text-align: right; overflow-wrap: anywhere; }
.answer-block { padding: 18px 16px; }
.answer-block > div { color: #303532; font-size: 12px; line-height: 1.65; overflow-wrap: anywhere; }

.compare-toolbar {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto minmax(220px, 1fr) auto;
  align-items: end;
  gap: 12px;
  margin-bottom: 18px;
}
.compare-toolbar > svg { width: 18px; margin-bottom: 12px; color: var(--ink-soft); }
.compare-toolbar label { display: grid; gap: 7px; }
.compare-toolbar label > span, .fingerprint-grid span {
  color: var(--ink-soft);
  font-size: 10px;
  font-weight: 700;
}
.compare-toolbar select {
  width: 100%;
  height: 42px;
  padding: 0 12px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 5px;
}
.compare-summary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-bottom: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.compare-summary > div {
  display: grid;
  min-height: 88px;
  align-content: center;
  gap: 5px;
  padding: 0 18px;
  border-right: 1px solid var(--line);
}
.compare-summary > div:last-child { border-right: 0; }
.compare-summary span { color: var(--ink-soft); font-size: 11px; }
.compare-summary strong { font-size: 15px; overflow-wrap: anywhere; }
.compare-score strong { font-size: 28px; }
.verdict-ok { color: var(--green); }
.verdict-bad { color: var(--red); }
.fingerprint-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-bottom: 18px;
  overflow: hidden;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.fingerprint-grid > div { display: grid; gap: 8px; min-width: 0; padding: 14px 16px; background: #fbfcfa; }
.fingerprint-grid code { overflow: hidden; color: var(--blue); font-size: 11px; text-overflow: ellipsis; white-space: nowrap; }
.check-badge.notice { color: var(--amber); background: var(--amber-soft); }
.diff-table td:last-child { min-width: 280px; }
.diff-table td:last-child code { display: block; overflow-wrap: anywhere; white-space: normal; }
.diff-arrow { display: block; margin: 5px 0; color: var(--ink-soft); }
.table-empty { height: 180px; color: var(--ink-soft); text-align: center; }
.success-empty { color: var(--green); }

.view-toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 22px; }
.score-lockup { display: flex; align-items: baseline; gap: 10px; }
.score-lockup strong { font-size: 34px; }
.score-lockup span { color: var(--ink-soft); }
.matrix-visual { display: grid; grid-template-columns: repeat(5, minmax(60px, 1fr)); gap: 8px; margin-bottom: 22px; }
.matrix-cell { height: 76px; padding: 12px; background: var(--surface); border: 1px solid var(--line); border-top: 3px solid var(--line-strong); border-radius: var(--radius); }
.matrix-cell.passed { border-top-color: var(--green); }
.matrix-cell.failed { border-top-color: var(--red); }
.matrix-cell strong { display: block; margin-top: 8px; font-size: 11px; }
.matrix-cell span { color: var(--ink-soft); font: 10px ui-monospace, SFMono-Regular, Menlo, monospace; }

.data-table-wrap { overflow: auto; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.data-table { width: 100%; border-collapse: collapse; text-align: left; }
.data-table th { height: 42px; padding: 0 16px; color: var(--ink-soft); background: #fafbf8; border-bottom: 1px solid var(--line); font-size: 10px; text-transform: uppercase; }
.data-table td { padding: 15px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
.data-table tbody tr:last-child td { border-bottom: 0; }
.data-table code { font-size: 11px; }
.check-badge { display: inline-flex; min-height: 22px; align-items: center; padding: 0 8px; color: var(--green); background: var(--green-soft); border-radius: 11px; font-size: 10px; font-weight: 700; }
.check-badge.failed { color: var(--red); background: #f8e6e4; }

.adapter-grid { display: grid; grid-template-columns: repeat(3, minmax(220px, 1fr)); gap: 14px; }
.adapter-card { min-height: 180px; padding: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.adapter-card-head { display: flex; align-items: center; justify-content: space-between; }
.adapter-icon { display: grid; width: 36px; height: 36px; place-items: center; color: var(--blue); background: var(--blue-soft); border-radius: 5px; }
.adapter-icon svg { width: 18px; height: 18px; }
.adapter-card h2 { margin: 18px 0 6px; font-size: 15px; }
.adapter-card p { margin: 0; color: var(--ink-soft); font-size: 12px; line-height: 1.5; }
.adapter-card footer { display: flex; align-items: center; justify-content: space-between; margin-top: 20px; color: var(--ink-soft); font: 10px ui-monospace, SFMono-Regular, Menlo, monospace; }

.agent-toolbar {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(220px, 1fr) auto auto auto auto;
  align-items: end;
  gap: 10px;
  margin: 18px 0;
}
.agent-toolbar label { display: grid; gap: 6px; }
.agent-toolbar label > span { color: var(--ink-soft); font-size: 10px; font-weight: 700; }
.agent-toolbar select { width: 100%; height: 42px; padding: 0 12px; color: var(--ink); background: var(--surface); border: 1px solid var(--line-strong); border-radius: 5px; }
.agent-toolbar .icon-button { height: 42px; }
.control-stages { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); margin-bottom: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.control-stages > div { position: relative; display: grid; min-height: 84px; grid-template-columns: 24px 1fr; grid-template-rows: auto auto; align-content: center; column-gap: 8px; padding: 0 14px; border-right: 1px solid var(--line); }
.control-stages > div:last-child { border-right: 0; }
.control-stages > div:not(:last-child)::after { content: ""; position: absolute; right: -4px; top: 50%; z-index: 1; width: 7px; height: 7px; margin-top: -4px; background: var(--surface); border-top: 1px solid var(--line-strong); border-right: 1px solid var(--line-strong); transform: rotate(45deg); }
.control-stages svg { grid-row: 1 / 3; width: 18px; color: var(--blue); }
.control-stages span { font-weight: 700; font-size: 12px; }
.control-stages small { color: var(--ink-soft); font-size: 10px; }
.agent-grid { display: grid; grid-template-columns: minmax(520px, 1fr) 320px; margin-bottom: 18px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.agent-plan { min-width: 0; border-right: 1px solid var(--line); }
.agent-step-list { min-height: 430px; }
.agent-step { display: grid; grid-template-columns: 44px minmax(0, 1fr) auto; min-height: 72px; align-items: center; gap: 12px; padding: 10px 16px; border-bottom: 1px solid var(--line); }
.agent-step:last-child { border-bottom: 0; }
.agent-step-index { display: grid; width: 34px; height: 34px; place-items: center; color: var(--ink-soft); background: var(--paper); border: 1px solid var(--line); border-radius: 50%; font: 10px ui-monospace, SFMono-Regular, Menlo, monospace; }
.agent-step.succeeded .agent-step-index { color: var(--green); background: var(--green-soft); border-color: #8fc6af; }
.agent-step.failed .agent-step-index, .agent-step.blocked .agent-step-index { color: var(--red); background: #f8e6e4; border-color: #d6a19d; }
.agent-step.compensated .agent-step-index { color: var(--amber); background: var(--amber-soft); border-color: #dbbd8f; }
.agent-step.running .agent-step-index, .agent-step.queued .agent-step-index { color: var(--blue); background: #e7eff7; border-color: #9bb8d1; }
.agent-step.cancelled .agent-step-index { color: var(--ink-soft); background: var(--paper); border-color: var(--line-strong); }
.agent-step > div:nth-child(2) { display: grid; gap: 4px; min-width: 0; }
.agent-step code, .agent-step small { color: var(--ink-soft); font-size: 10px; overflow-wrap: anywhere; }
.agent-step-outcome { display: grid; justify-items: end; gap: 7px; }
.agent-budget { background: #fbfcfa; }
.agent-budget .run-facts { grid-template-columns: auto 1fr; }
.budget-bars { display: grid; gap: 16px; padding: 18px 16px; border-top: 1px solid var(--line); }
.budget-bars > div, .budget-bars span { display: grid; gap: 7px; }
.budget-bars span { grid-template-columns: 1fr auto; }
.budget-bars strong, .budget-bars small { font-size: 10px; }
.budget-bars small { color: var(--ink-soft); }
.budget-bars i { display: block; height: 5px; overflow: hidden; background: var(--line); border-radius: 3px; }
.budget-bars b { display: block; height: 100%; background: var(--green); }
.agent-evidence { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.agent-evidence .section-heading { border-bottom: 0; }
.agent-event-table { max-height: 390px; border: 0; border-top: 1px solid var(--line); border-radius: 0; }
.agent-event-table td:nth-child(2) { min-width: 220px; }
.agent-event-table td:last-child { color: var(--ink-soft); font-size: 12px; overflow-wrap: anywhere; }

.toast { position: fixed; right: 20px; bottom: 20px; z-index: 20; padding: 11px 14px; color: #fff; background: var(--ink); border-radius: 5px; box-shadow: 0 8px 30px rgb(0 0 0 / 18%); opacity: 0; transform: translateY(8px); pointer-events: none; transition: .18s ease; }
.toast.show { opacity: 1; transform: translateY(0); }

@media (max-width: 1180px) {
  .trace-layout { grid-template-columns: 210px minmax(390px, 1fr); }
  .inspector { grid-column: 1 / -1; border-top: 1px solid var(--line); }
  .run-facts { grid-template-columns: repeat(4, auto 1fr); }
  .answer-block { border-top: 1px solid var(--line); }
}

@media (max-width: 820px) {
  .sidebar { inset: auto 0 0; width: 100%; height: 62px; flex-direction: row; border: 0; border-top: 1px solid var(--sidebar-line); }
  .brand, .sidebar-foot { display: none; }
  .primary-nav { width: 100%; grid-template-columns: repeat(6, 1fr); gap: 0; padding: 5px 8px; }
  .nav-item { min-width: 0; min-height: 50px; flex-direction: column; justify-content: center; gap: 3px; padding: 0 3px; font-size: 9px; }
  .workspace { margin-left: 0; padding-bottom: 62px; }
  .topbar { min-height: 66px; padding: 10px 16px; }
  .topbar h1 { font-size: 18px; }
  .view { padding: 16px 12px 26px; }
  .metric-strip { grid-template-columns: repeat(2, 1fr); }
  .metric-strip > div:nth-child(2) { border-right: 0; }
  .metric-strip > div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .run-composer { grid-template-columns: 1fr auto; }
  .composer-field { grid-column: 1 / -1; }
  .trace-layout { grid-template-columns: 1fr; }
  .run-rail, .trace-main, .inspector { width: 100%; min-width: 0; border-right: 0; overflow: hidden; }
  .run-rail { max-height: 260px; border-bottom: 1px solid var(--line); }
  .run-list { display: flex; overflow-x: auto; }
  .run-item { min-width: 220px; border-right: 1px solid var(--line); }
  .trace-header { align-items: flex-start; }
  .trace-summary span:last-child { display: none; }
  .run-facts { grid-template-columns: auto 1fr; }
  .matrix-visual { grid-template-columns: repeat(2, 1fr); }
  .adapter-grid { grid-template-columns: 1fr; }
  .agent-toolbar { grid-template-columns: 1fr auto auto auto auto; }
  .agent-toolbar label:nth-child(2) { grid-column: 1 / -1; grid-row: 2; }
  .control-stages { grid-template-columns: repeat(3, 1fr); }
  .control-stages > div:nth-child(3) { border-right: 0; }
  .control-stages > div:nth-child(-n+3) { border-bottom: 1px solid var(--line); }
  .agent-grid { grid-template-columns: 1fr; }
  .agent-plan { border-right: 0; border-bottom: 1px solid var(--line); }
  .compare-toolbar { grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); }
  .compare-toolbar .primary-button { grid-column: 1 / -1; width: 100%; }
  .compare-summary { grid-template-columns: repeat(2, 1fr); }
  .compare-summary > div:nth-child(2) { border-right: 0; }
  .compare-summary > div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .fingerprint-grid { grid-template-columns: 1fr; }
  .toast { right: 12px; bottom: 76px; left: 12px; text-align: center; }
}

@media (max-width: 460px) {
  .version { display: none; }
  .metric-strip strong { font-size: 14px; }
  .run-composer { grid-template-columns: minmax(0, 1fr) auto; }
  .run-composer select { min-width: 0; }
  .primary-button span { display: none; }
  .primary-button { width: 42px; padding: 0; }
  .agent-toolbar { grid-template-columns: repeat(4, 42px) minmax(0, 1fr); }
  .agent-toolbar label:first-child, .agent-toolbar label:nth-child(2) {
    grid-column: 1 / -1;
    grid-row: auto;
  }
  .control-stages { grid-template-columns: repeat(2, 1fr); }
  .control-stages > div { min-height: 76px; }
  .control-stages > div:nth-child(2n) { border-right: 0; }
  .control-stages > div:nth-child(-n+4) { border-bottom: 1px solid var(--line); }
  .agent-step { grid-template-columns: 38px minmax(0, 1fr); }
  .agent-step-outcome { grid-column: 2; grid-template-columns: auto auto; justify-content: start; justify-items: start; }
  .trace-header { min-height: 126px; flex-direction: column; gap: 10px; }
  .trace-controls { align-items: flex-start; flex-direction: column; }
  .event-row { grid-template-columns: 29px minmax(0, 1fr); }
  .event-time { grid-column: 2; padding: 0; }
  .compare-toolbar { grid-template-columns: 1fr; }
  .compare-toolbar > svg { display: none; }
  .compare-toolbar .primary-button { width: 100%; }
  .compare-toolbar .primary-button span { display: inline; }
}