:root {
  --trace-blue: #6677f8;
  --trace-blue-soft: #eef0ff;
  --trace-cyan: #3ab8dc;
  --trace-green: #30a56b;
  --trace-red: #f2555d;
  --trace-orange: #f19a3e;
  --trace-purple: #c446df;
  --trace-text: #25272a;
  --trace-muted: #747980;
  --trace-faint: #a3a7ad;
  --trace-line: #e6e7ea;
  --trace-surface: rgba(255,255,255,.91);
  --trace-shadow: 0 14px 34px rgba(37,42,60,.09), 0 2px 5px rgba(37,42,60,.04);
}

.trace-page {
  min-height: calc(100vh - 72px);
  color: var(--trace-text);
  background:
    linear-gradient(180deg, rgba(244,247,255,.72), rgba(251,250,255,.72) 62%, rgba(248,248,250,.9)),
    #fbfbfc;
}
.trace-container { width: min(1560px, calc(100% - 80px)); margin-inline: auto; }
.trace-site-header .trace-nav-active {
  padding: 10px 18px;
  border-radius: 999px;
  color: var(--trace-blue) !important;
  background: var(--trace-blue-soft);
  text-decoration: none !important;
}

/* List view */
.trace-list-view { padding: 76px 0 94px; }
.trace-hero { text-align: center; }
.trace-hero h1 { margin: 0; font-size: clamp(38px, 4vw, 54px); font-weight: 760; letter-spacing: 0; line-height: 1.05; }
.trace-hero p {
  display: inline-block;
  max-width: min(820px, 92vw);
  margin: 28px 0 0;
  padding: 10px 32px;
  border-radius: 999px;
  color: #1688e8;
  background: #eaf4ff;
  font-size: clamp(15px, 1.5vw, 21px);
  font-weight: 570;
  line-height: 1.35;
}
.trace-filter-bar { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px 28px; margin: 42px auto 48px; }
.trace-filter {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  gap: 8px;
  padding: 0 17px;
  border: 1px solid transparent;
  border-radius: 999px;
  color: #71757b;
  background: transparent;
  font: 650 13px var(--sans);
  cursor: pointer;
  transition: transform .16s ease, color .16s ease, background .16s ease, box-shadow .16s ease;
}
.trace-filter:hover { color: var(--trace-text); transform: translateY(-1px); }
.trace-filter[aria-pressed="true"] { color: #fff; background: var(--trace-blue); box-shadow: 0 8px 22px rgba(102,119,248,.28); }
.trace-filter-icon { font-size: 15px; }
.trace-filter-count { min-width: 25px; padding: 3px 7px; border-radius: 999px; color: var(--trace-blue); background: #e9edff; font: 700 10px var(--mono); text-align: center; }
.trace-filter[aria-pressed="true"] .trace-filter-count { color: #fff; background: rgba(255,255,255,.22); }

.trace-card-list { display: flex; flex-direction: column; gap: 22px; }
.trace-card {
  --card-accent: var(--trace-blue);
  display: block;
  min-height: 160px;
  padding: 30px 34px 26px;
  border: 1px solid rgba(223,225,230,.95);
  border-left: 4px solid var(--card-accent);
  border-radius: 22px;
  color: inherit;
  background: var(--trace-surface);
  box-shadow: var(--trace-shadow);
  text-decoration: none;
  transition: transform .18s ease, box-shadow .18s ease;
}
.trace-card:hover { transform: translateY(-2px); box-shadow: 0 18px 40px rgba(37,42,60,.12), 0 2px 5px rgba(37,42,60,.04); text-decoration: none; }
.trace-card[data-status="rejected"] { --card-accent: var(--trace-red); }
.trace-card[data-kind="meta-agent"] { --card-accent: var(--trace-purple); }
.trace-card[data-kind="task-agent"] { --card-accent: var(--trace-orange); }
.trace-card-head { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; }
.trace-chip { display: inline-flex; min-height: 30px; align-items: center; gap: 6px; padding: 0 11px; border: 1px solid #dfe2ff; border-radius: 999px; color: #5d70dd; background: #f5f6ff; font: 690 11px var(--sans); }
.trace-chip.id { border-color: color-mix(in srgb, var(--card-accent) 32%, #fff); color: var(--card-accent); background: color-mix(in srgb, var(--card-accent) 7%, #fff); font-family: var(--mono); }
.trace-chip.status { border-color: #bfe5ce; color: #248350; background: #f0faf4; text-transform: uppercase; }
.trace-card[data-status="rejected"] .trace-chip.status { border-color: #ffc8cb; color: var(--trace-red); background: #fff2f3; }
.trace-kind-label { color: var(--card-accent); font-size: 12px; font-weight: 720; text-transform: capitalize; }
.trace-card-time { display: inline-flex; align-items: center; gap: 5px; color: var(--trace-muted); font: 500 11px var(--mono); }
.trace-card-date { margin-left: auto; color: #969aa0; font: 500 11px var(--mono); }
.trace-card h2 { margin: 17px 0 0; color: #60656b; font-size: 15px; font-weight: 520; line-height: 1.55; }
.trace-card footer { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.trace-card-tag { padding: 6px 12px; border: 1px solid #e0e2e6; border-radius: 999px; color: #777c82; background: #fff; font: 600 10px var(--mono); }
.trace-empty { padding: 60px 20px; color: var(--trace-muted); text-align: center; }

/* Detail view */
.trace-detail-view { padding: 50px 0 90px; }
.trace-breadcrumb { display: flex; min-width: 0; align-items: center; gap: 15px; margin: 0 10px 34px; color: var(--trace-muted); font: 500 12px var(--mono); }
.trace-breadcrumb a { color: var(--trace-blue); font-family: var(--sans); font-weight: 720; }
.trace-breadcrumb span:last-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.trace-meta-card { padding: 26px 32px 19px; border: 1px solid var(--trace-line); border-radius: 22px; background: var(--trace-surface); box-shadow: var(--trace-shadow); }
.trace-instruction { margin: 0 0 24px; color: #63686e; font-size: 14px; line-height: 1.55; }
.trace-meta-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 29px 34px; margin: 0; }
.trace-meta-item { min-width: 0; }
.trace-meta-item dt { display: flex; align-items: center; gap: 6px; color: #90949a; font-size: 11px; font-weight: 650; }
.trace-meta-icon { width: 17px; color: var(--meta-color, var(--trace-blue)); font-size: 14px; font-style: normal; text-align: center; }
.trace-meta-item dd { margin: 7px 0 0; overflow-wrap: anywhere; color: #292c30; font: 650 12px/1.45 var(--mono); }
.trace-result-pill { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border: 1px solid #bae3ca; border-radius: 999px; color: var(--trace-green); background: #eff9f3; font-family: var(--sans); font-size: 11px; font-weight: 780; text-transform: uppercase; }
.trace-result-pill.rejected { border-color: #ffc5c8; color: var(--trace-red); background: #fff1f2; }
.trace-meta-actions { display: flex; justify-content: flex-end; margin-top: 24px; padding-top: 17px; border-top: 1px solid var(--trace-line); }
.trace-export { height: 38px; padding: 0 16px; border: 1px solid var(--trace-blue); border-radius: 999px; color: var(--trace-blue); background: #fff; font: 720 11px var(--sans); cursor: pointer; }
.trace-export:hover { background: var(--trace-blue-soft); }

.trace-tabs { display: flex; gap: 8px; margin: 40px 6px 28px; overflow-x: auto; border-bottom: 1px solid var(--trace-line); }
.trace-tab { position: relative; display: inline-flex; flex: 0 0 auto; min-height: 48px; align-items: center; gap: 8px; padding: 0 15px; border: 0; color: #83878d; background: transparent; font: 680 12px var(--sans); cursor: pointer; }
.trace-tab::after { position: absolute; right: 0; bottom: -1px; left: 0; height: 3px; border-radius: 3px 3px 0 0; background: transparent; content: ""; }
.trace-tab[aria-selected="true"] { border-radius: 11px 11px 0 0; color: var(--trace-blue); background: #f1f2ff; }
.trace-tab[aria-selected="true"]::after { background: var(--trace-blue); }
.trace-tab-count { padding: 3px 7px; border-radius: 999px; color: var(--trace-blue); background: #e6e9ff; font: 700 9px var(--mono); }
.trace-tab-content { min-height: 520px; }
.trace-agent-panels { display: grid; grid-template-columns: 440px minmax(0, 1fr); gap: 28px; align-items: start; }
.trace-step-panel, .trace-step-detail, .trace-evidence-card { border: 1px solid var(--trace-line); border-radius: 19px; background: rgba(255,255,255,.94); box-shadow: var(--trace-shadow); }
.trace-step-panel { position: sticky; top: 91px; max-height: 640px; overflow: auto; padding: 7px; }
.trace-step-search { position: sticky; z-index: 2; top: -7px; display: flex; align-items: center; gap: 9px; padding: 13px 11px; border-bottom: 1px solid var(--trace-line); background: rgba(255,255,255,.97); }
.trace-step-search input { min-width: 0; flex: 1; border: 0; outline: 0; color: var(--trace-text); background: transparent; font: 500 11px var(--mono); }
.trace-step-search span { color: var(--trace-faint); font: 500 9px var(--mono); white-space: nowrap; }
.trace-step { --step-accent: var(--trace-blue); display: grid; width: 100%; grid-template-columns: 28px 22px minmax(0,1fr) auto; min-height: 48px; align-items: center; gap: 6px; padding: 7px 10px; border: 0; border-left: 3px solid var(--step-accent); border-radius: 8px; color: var(--trace-text); background: transparent; text-align: left; cursor: pointer; }
.trace-step + .trace-step { margin-top: 2px; }
.trace-step:hover, .trace-step[aria-current="true"] { background: #f4f5ff; }
.trace-step[data-type="tool_call"] { --step-accent: var(--trace-purple); }
.trace-step[data-type="tool_result"] { --step-accent: var(--trace-green); }
.trace-step[data-error="true"] { --step-accent: var(--trace-red); }
.trace-step-num { color: #9a9da3; font: 500 10px var(--mono); text-align: right; }
.trace-step-symbol { color: var(--step-accent); text-align: center; }
.trace-step-name { overflow: hidden; font: 520 11px var(--mono); text-overflow: ellipsis; white-space: nowrap; }
.trace-step-duration { color: #969aa0; font: 500 9px var(--mono); }
.trace-step-detail { min-height: 520px; max-height: 640px; overflow: auto; padding: 32px 34px; }
.trace-detail-label { display: flex; align-items: center; gap: 8px; margin: 0; color: #81858b; font-size: 11px; font-weight: 760; letter-spacing: .07em; text-transform: uppercase; }
.trace-detail-label i { color: var(--trace-orange); font-style: normal; }
.trace-step-detail h2 { margin: 18px 0 0; font-size: 20px; font-weight: 690; letter-spacing: 0; }
.trace-message-section { margin-top: 24px; padding-top: 22px; border-top: 1px solid var(--trace-line); }
.trace-message-section h3 { margin: 0 0 13px; color: #858990; font-size: 10px; font-weight: 760; letter-spacing: .06em; text-transform: uppercase; }
.trace-message-copy { color: #42474d; font: 500 13px/1.72 var(--mono); overflow-wrap: anywhere; white-space: pre-wrap; }
.trace-tool-response { margin-top: 18px; color: #747980; font: 500 10px/1.55 var(--mono); }
.trace-tool-response span { display: block; margin-bottom: 5px; color: #9a9ea5; font-size: 9px; font-weight: 720; text-transform: uppercase; }
.trace-tool-response p { margin: 0; overflow-wrap: anywhere; white-space: pre-wrap; }
.trace-code-block { margin: 0; overflow-x: auto; border: 1px solid #e4e6eb; border-radius: 10px; padding: 17px 18px; color: #34383e; background: #f8f9fb; font: 500 12px/1.65 var(--mono); overflow-wrap: anywhere; white-space: pre-wrap; word-break: break-word; }
.trace-code-block.error { border-color: #ffc8cb; color: #9b3037; background: #fff5f5; }
.trace-step-facts { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 12px; margin: 26px 0 0; }
.trace-step-facts div { padding: 13px; border: 1px solid var(--trace-line); border-radius: 10px; background: #fafafd; }
.trace-step-facts span, .trace-step-facts strong { display: block; }
.trace-step-facts span { color: var(--trace-faint); font: 600 9px var(--mono); text-transform: uppercase; }
.trace-step-facts strong { margin-top: 7px; overflow-wrap: anywhere; font: 650 11px var(--mono); }

.trace-evidence-card { padding: 28px 30px; }
.trace-evidence-card h2 { margin: 0; font-size: 20px; letter-spacing: 0; }
.trace-evidence-card > p { max-width: 940px; margin: 14px 0 0; color: #62676d; font-size: 13px; line-height: 1.75; }
.trace-score-banner { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 24px; padding: 18px 20px; border: 1px solid #bde4cc; border-radius: 12px; background: #f0faf4; }
.trace-score-banner.rejected { border-color: #ffc8cb; background: #fff3f3; }
.trace-score-banner strong { color: var(--trace-green); font-size: 13px; }
.trace-score-banner.rejected strong { color: var(--trace-red); }
.trace-score-banner span { color: #6d7278; font: 600 10px var(--mono); }
.trace-eval-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 12px; margin-top: 20px; }
.trace-eval-item { padding: 18px; border: 1px solid var(--trace-line); border-radius: 12px; background: #fcfcfd; }
.trace-eval-item span, .trace-eval-item strong { display: block; }
.trace-eval-item span { color: #8c9096; font-size: 10px; font-weight: 650; }
.trace-eval-item strong { margin-top: 10px; font: 690 15px var(--mono); }
.trace-provenance { display: grid; grid-template-columns: 180px 1fr; margin: 24px 0 0; border-top: 1px solid var(--trace-line); }
.trace-provenance dt, .trace-provenance dd { margin: 0; padding: 12px 0; border-bottom: 1px solid var(--trace-line); font-size: 11px; }
.trace-provenance dt { color: #8d9197; font-family: var(--mono); text-transform: uppercase; }
.trace-provenance dd { overflow-wrap: anywhere; color: #454a50; }
.trace-disclosure { margin: 18px 3px 0; color: #969aa0; font-size: 9px; line-height: 1.6; }

.trace-loading { padding: 110px 0; }
.trace-loading-line { width: 290px; height: 24px; margin: 0 auto 46px; border-radius: 999px; background: #e9ebf1; animation: trace-pulse 1.2s ease-in-out infinite alternate; }
.trace-loading-card { height: 160px; margin-top: 22px; border-radius: 22px; background: #f0f1f4; animation: trace-pulse 1.2s ease-in-out infinite alternate; }
@keyframes trace-pulse { to { opacity: .48; } }

@media (max-width: 1180px) {
  .trace-meta-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .trace-agent-panels { grid-template-columns: 350px minmax(0,1fr); }
}
@media (max-width: 820px) {
  .trace-site-header { height: 62px; padding: 0 16px; overflow: hidden; }
  .trace-site-header .portal-brand { flex: 0 0 auto; }
  .trace-site-header .portal-nav { flex: 1 1 auto; justify-content: flex-start; gap: 18px; margin-left: 24px; overflow-x: auto; scrollbar-width: none; white-space: nowrap; }
  .trace-site-header .portal-nav::-webkit-scrollbar { display: none; }
  .trace-site-header .portal-nav .github-link { display: none; }
  .trace-container { width: min(100% - 32px, 1560px); }
  .trace-list-view { padding-top: 48px; }
  .trace-hero p { border-radius: 15px; padding-inline: 18px; }
  .trace-filter-bar { gap: 8px; margin: 32px 0; }
  .trace-card { min-height: 0; padding: 22px 20px; border-radius: 16px; }
  .trace-card-date { width: 100%; margin-left: 0; }
  .trace-meta-card { padding: 22px 20px 17px; }
  .trace-meta-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .trace-agent-panels { grid-template-columns: 1fr; }
  .trace-step-panel { position: static; max-height: 360px; }
  .trace-step-detail { min-height: 390px; max-height: none; padding: 24px 21px; }
  .trace-step-facts, .trace-eval-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .trace-provenance { grid-template-columns: 120px 1fr; }
}
@media (max-width: 560px) {
  .trace-hero h1 { font-size: 38px; }
  .trace-filter { min-height: 40px; padding-inline: 12px; }
  .trace-meta-grid, .trace-step-facts, .trace-eval-grid { grid-template-columns: 1fr 1fr; gap: 18px 12px; }
  .trace-instruction { font-size: 12px; }
}