/* Observability (the agent-monitoring viewers' stylesheet, copied in part). Opened full screen or in an
   iframe, which cannot see the site's own light/dim switch, so it follows
   the reader's system preference, as the other viewers do (their controls,
   cards and flights are copied here, so the series look alike). */

:root {
  --bg: #ffffff;
  --card: #ffffff;
  --border: #dfe3e8;
  --text: #22272e;
  --dim: #5f6b78;
  --accent: #326ce5;
  --btn: #f4f5f7;
  --panel: #0d2436;
  --panel-text: #eaf1f6;
  --raw: #f7f8fa;
  --flash: rgba(255, 196, 0, 0.3);
  --code-bg: #f6f8fa;
  --ok: #1f883d;
  --late: #cf222e;
  --busy: #bf8700;
  /* the runs: ours, for the reader; the records carry none of them */
  --rA: #2563eb; --rB: #0d9488; --rC: #ea580c; --rD: #7c3aed; --rE: #db2777;
  /* the spans, by what they are */
  --s-run: #64748b; --s-agent: #3b82f6; --s-chat: #8b5cf6; --s-tool: #d97706;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1d2b;
    --card: #112b40;
    --border: #234862;
    --text: #eaf1f6;
    --dim: #9fb2c2;
    --accent: #6f9bff;
    --btn: #16374f;
    --panel: #081b29;
    --raw: #0d2233;
    --flash: rgba(255, 196, 0, 0.18);
    --code-bg: #0d2233;
    --ok: #4ac26b;
    --late: #ff7b72;
    --busy: #e3b341;
    --rA: #6f9bff; --rB: #2dd4bf; --rC: #fb923c; --rD: #a78bfa; --rE: #f472b6;
    --s-run: #94a3b8; --s-agent: #60a5fa; --s-chat: #a78bfa; --s-tool: #f59e0b;
  }
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; }
code, .mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.dim { color: var(--dim); font-weight: 400; }
.kv-app { padding: 0.5rem 16px 0.8rem; max-width: 1800px; margin: 0 auto; }
.kv-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.2rem 0.9rem; margin: 0 0 0.45rem; }
.kv-head h1 { font-size: 1.3rem; margin: 0; letter-spacing: -0.01em; }
.kv-head p { margin: 0; color: var(--dim); font-size: 0.92rem; }
.in-viewer .kv-head { display: none; }

/* --- the controls, with the step's explanation beside them */
.am-top { display: grid; grid-template-columns: 15rem minmax(0, 1fr); gap: 12px; height: 128px; margin-bottom: 10px; }
.kv-bar { display: flex; flex-direction: column; gap: 0.45rem; }
.kv-bar .row { display: flex; align-items: center; gap: 0.5rem; }
.kv-bar .count { font-family: ui-monospace, Menlo, monospace; font-size: 0.8rem; color: var(--dim); margin-left: auto; }
.kv-btn { background: var(--btn); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: 0.35rem 0.9rem; font-size: 0.88rem; cursor: pointer; font-family: inherit; }
.kv-btn:hover:not(:disabled) { border-color: var(--accent); }
.kv-btn:disabled { opacity: 0.45; cursor: default; }
.kv-btn.play { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis; text-align: left; }
.kv-bar select { background: var(--btn); color: var(--text); border: 1px solid var(--border); border-radius: 7px;
  padding: 0.3rem 0.4rem; font-size: 0.86rem; font-family: inherit; min-width: 0; max-width: 100%; }
.am-explain { overflow: auto; border: 1px solid var(--border); border-left: 4px solid var(--accent); border-radius: 10px;
  padding: 0.45rem 0.8rem; font-size: 0.86rem; line-height: 1.42; background: var(--card); }
.am-explain p { margin: 0 0 0.3rem; }
.am-explain .main { font-weight: 650; font-size: 1.02rem; }
.am-explain ul.steps { margin: 0 0 0.3rem; padding-left: 1.1rem; columns: 2 26rem; column-gap: 2rem; }
.am-explain ul.steps li { break-inside: avoid; margin: 0 0 0.15rem; }
.am-explain ul.steps ul.steps { columns: auto; margin: 0.1rem 0; list-style: circle; }
.am-explain code { font-size: 0.92em; background: var(--code-bg); padding: 0 0.2em; border-radius: 3px; }

.kv-card { display: flex; flex-direction: column; min-height: 0; min-width: 0; overflow: hidden;
  border: 1px solid var(--border); border-radius: 12px; background: var(--card); font-size: 0.84rem;
  transition: box-shadow 0.25s, border-color 0.25s, opacity 0.4s; }
.kv-card.here { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 35%, transparent); }
.kv-card > header { flex: none; display: flex; align-items: center; gap: 0.5rem; flex-wrap: wrap;
  padding: 0.4rem 0.7rem 0.35rem; border-bottom: 1px solid var(--border); }
.kv-card > header h2 { font-size: 0.92rem; margin: 0; flex: 1; min-width: 0; }
.kv-card > header h2 code { font-size: 0.72rem; color: var(--dim); font-weight: 400; margin-left: 0.3rem; }
.kv-body { flex: 1; min-height: 0; overflow: auto; padding: 0.45rem 0.7rem; }
h3 { font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--dim); margin: 0 0 0.3rem; }


/* --- the signals' colours */
:root { --logs: #0d9488; --metrics: #d97706; --traces: #7c3aed; --otel: #4f46e5; }
@media (prefers-color-scheme: dark) { :root { --logs: #2dd4bf; --metrics: #f59e0b; --traces: #a78bfa; --otel: #818cf8; } }

/* --- the stage: the services, the matrix beside the vendors, the history */
.ob-stage { position: relative; display: grid; gap: 10px;
  grid-template-columns: minmax(0, 1fr) 13rem; grid-template-rows: auto minmax(0, 1fr) auto;
  grid-template-areas: "svcs svcs" "matrix vendors" "history history";
  height: max(560px, calc(100vh - 128px - 3.6rem)); }
@media (min-width: 1101px) { .in-viewer .ob-stage { height: max(520px, calc(100vh - 128px - 1.4rem)); } }
.ob-svcs { grid-area: svcs; } .ob-matrix { grid-area: matrix; } .ob-vendors { grid-area: vendors; } .ob-history { grid-area: history; }
@media (max-width: 1100px) {
  .am-top { grid-template-columns: minmax(0, 1fr); height: auto; position: sticky; top: 0; z-index: 40; background: var(--bg);
    margin: 0 -16px 10px; padding: 0.4rem 16px; box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12); }
  .kv-bar { flex-direction: row; flex-wrap: wrap; }
  .am-explain { max-height: 30vh; }
  .ob-stage { height: auto; grid-template-columns: minmax(0, 1fr); grid-template-areas: "svcs" "matrix" "vendors" "history"; }
  .ob-matrix { overflow-x: auto; }
}

/* the services: a user, A, the hop between them, B */
.ob-svcs { flex-direction: row; align-items: stretch; gap: 0.8rem; padding: 0.5rem 0.8rem; }
.ob-svcs .user { align-self: center; color: var(--dim); font-size: 0.82rem; padding: 0.3rem 0.6rem; border: 1px dashed var(--border); border-radius: 20px; }
.ob-svcs .svc { flex: 0 1 17rem; border: 1px solid var(--border); border-radius: 9px; background: var(--raw); padding: 0.35rem 0.6rem;
  display: flex; flex-direction: column; gap: 0.25rem; }
.ob-svcs .svc b { font-size: 0.86rem; }
.ob-svcs .lib { align-self: flex-start; font-size: 0.72rem; font-weight: 600; color: #fff; background: var(--otel); border-radius: 5px; padding: 0.05rem 0.4rem; }
.ob-svcs .hop { flex: 0 1 12rem; display: flex; flex-direction: column; align-items: center; justify-content: center; border-radius: 8px;
  border-bottom: 2px solid var(--border); font-size: 0.74rem; }
.ob-svcs .hop small { color: var(--dim); }

/* the matrix: a row per signal, a column per stage, an arrow between stages */
.ob-matrix { display: grid; position: relative; gap: 6px 0; padding: 0.4rem 0.6rem 0.6rem; overflow: auto;
  grid-template-columns: minmax(13rem, 1.35fr) minmax(0, 1fr) 4.6rem minmax(0, 1fr) 4.6rem minmax(0, 1.1fr) 4.6rem minmax(0, 1fr);
  grid-template-rows: auto repeat(3, minmax(0, 1fr)); }
.mh { font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--dim); font-weight: 700; align-self: end;
  padding: 0.15rem 0.4rem; border-radius: 5px; }
.sig { display: flex; flex-direction: column; gap: 0.15rem; padding: 0.35rem 0.5rem; border-radius: 9px; border-left: 4px solid var(--c); min-height: 0; overflow: hidden; }
.sig > b { font-size: 0.95rem; color: var(--c); }
.sig > span { font-size: 0.74rem; color: var(--dim); }
.sig:has(.nm-logs) { --c: var(--logs); } .sig:has(.nm-metrics) { --c: var(--metrics); } .sig:has(.nm-traces) { --c: var(--traces); }
.sig.here, .cell.here { background: color-mix(in srgb, var(--accent) 7%, transparent); }
.sample { margin-top: 0.2rem; font: 0.66rem/1.4 ui-monospace, Menlo, monospace; background: var(--raw); border: 1px solid var(--border); border-radius: 6px; padding: 0.2rem 0.35rem; }
.sample.empty { border-style: dashed; min-height: 2.2rem; background: none; }
.sample .ln { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sample i { color: var(--dim); font-style: normal; }
.sample .tid { color: var(--traces); }
.sample .ex { color: var(--dim); }
.sample.spans .sp { position: relative; height: 0.95rem; margin: 0.1rem 0; }
.sample.spans .sp::before { content: ''; position: absolute; left: var(--a); width: var(--w); top: 0.1rem; bottom: 0.1rem; border-radius: 3px;
  background: color-mix(in srgb, var(--traces) 35%, transparent); }
.sample.spans .sp.b::before { background: color-mix(in srgb, var(--traces) 60%, transparent); }
.sample.spans .sp span { position: relative; padding-left: calc(var(--a) + 0.25rem); }
.cell { display: flex; flex-wrap: wrap; align-content: center; gap: 0.25rem; padding: 0.3rem; border-radius: 9px; border: 1px solid var(--border); min-height: 0; overflow: auto; }
.arrow { position: relative; display: flex; align-items: center; justify-content: center; text-align: center; font-size: 0.66rem; color: var(--dim); padding: 0 0.15rem; border-radius: 5px; }
.arrow::after { content: ''; position: absolute; left: 0.3rem; right: 0.3rem; top: 50%; border-top: 2px solid var(--border); }
.arrow::before { content: ''; position: absolute; right: 0.25rem; top: calc(50% - 4px); border: 5px solid transparent; border-left: 7px solid var(--border); border-right: 0; }
.arrow.pull::before { right: auto; left: 0.25rem; border-left: 0; border-right: 7px solid var(--border); }
.arrow span { position: relative; z-index: 1; background: var(--card); padding: 0 0.15rem; transform: translateY(-0.7rem); line-height: 1.15; }
.arrow.blank::before, .arrow.blank::after { opacity: 0.35; }

/* a program: a chip; a click opens its card */
.chip { font: 600 0.72rem -apple-system, 'Segoe UI', Roboto, sans-serif; color: var(--text); background: var(--btn); border: 1px solid var(--border);
  border-radius: 6px; padding: 0.12rem 0.4rem; cursor: pointer; transition: opacity 0.3s; }
.chip:hover { border-color: var(--accent); }
.chip.gone { text-decoration: line-through; color: var(--dim); }
.chip.dim { opacity: 0.3; }
.chip.picked { background: var(--accent); border-color: var(--accent); color: #fff; }
.chip.under { opacity: 0.25; }

/* OpenTelemetry's bands, across the three rows */
.band { position: relative; z-index: 2; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.35rem;
  text-align: center; padding: 0.5rem; border-radius: 10px; color: #fff;
  background: var(--otel); box-shadow: 0 6px 18px rgba(0, 0, 0, 0.2); }
.band.sdk { grid-area: 2 / 2 / 5 / 3; } .band.col { grid-area: 2 / 4 / 5 / 5; }
.band b { font-size: 0.9rem; } .band small { font-size: 0.72rem; opacity: 0.9; }
.band .chip { background: rgba(255, 255, 255, 0.18); color: #fff; border-color: rgba(255, 255, 255, 0.5); }
.band .alts { display: flex; flex-wrap: wrap; gap: 0.25rem; justify-content: center; }

/* the companies selling it all */
.ob-vendors { padding: 0.5rem 0.6rem; flex-direction: row; flex-wrap: wrap; align-content: flex-start; gap: 0.3rem; overflow: auto; }
.ob-vendors h3 { flex-basis: 100%; margin: 0.2rem 0 0; }

/* the history: one equal slot per event, coloured by its signal */
.ob-history { padding: 0.35rem 0.8rem; }
.axis { position: relative; list-style: none; margin: 0; padding: 0; display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); }
.axis::before { content: ''; position: absolute; left: 0; right: 0; top: 1.45rem; border-top: 2px solid var(--border); }
.ev { position: relative; width: 100%; display: flex; flex-direction: column; align-items: center; gap: 0.2rem; background: none; border: 0; padding: 0;
  cursor: pointer; font: inherit; color: var(--text); text-align: center; }
.ev .y { font: 700 0.7rem ui-monospace, Menlo, monospace; color: var(--c); }
.ev i { width: 11px; height: 11px; border-radius: 50%; background: var(--c); }
.ev .n { font-size: 0.7rem; font-weight: 600; line-height: 1.15; padding: 0 0.15rem; }
.ev.s-logs { --c: var(--logs); } .ev.s-metrics { --c: var(--metrics); } .ev.s-traces { --c: var(--traces); } .ev.s-all { --c: var(--otel); }
.ev:hover .n { color: var(--accent); }

/* a program's card */
.ob-card { position: absolute; z-index: 60; width: 18rem; background: var(--card); color: var(--text); border: 1px solid var(--border);
  border-radius: 10px; padding: 0.5rem 0.7rem; box-shadow: 0 10px 28px rgba(0, 0, 0, 0.25); font-size: 0.82rem; }
.ob-card p { margin: 0.25rem 0 0.35rem; line-height: 1.4; }
.ob-card a { color: var(--accent); font-size: 0.78rem; }
.ob-card code { background: var(--code-bg); padding: 0 0.2em; border-radius: 3px; }
.ob-stage.spotlight .kv-card:not(.here) { opacity: 0.35; }
.ob-stage.spotlight .off { opacity: 0.25; }
.ob-stage .act { outline: 3px solid color-mix(in srgb, var(--accent) 60%, transparent); outline-offset: 1px;
  background-color: color-mix(in srgb, var(--flash) 80%, transparent); }
/* --- what is in the air: a message flying along its arrow */
#am-fly { position: absolute; left: 0; top: 0; width: 0; height: 0; overflow: visible; pointer-events: none; z-index: 50; }
#am-fly .trail { position: absolute; left: 0; top: 0; overflow: visible; }
#am-fly .trail polyline { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-linecap: round; stroke-dasharray: 3 7; }
#am-fly .trail path { fill: var(--accent); }
#am-fly .msg { position: absolute; transform: translate(-50%, -50%); background: var(--panel); color: var(--panel-text);
  border-radius: 6px; padding: 0.12rem 0.5rem; font-size: 0.74rem; font-weight: 600; white-space: nowrap;
  font-family: ui-monospace, Menlo, Consolas, monospace; box-shadow: 0 6px 16px rgba(0, 0, 0, 0.3); }
#am-fly .msg.doc { background: #fffdf4; color: #22272e; border: 1px solid #c9b98a; border-radius: 3px 10px 3px 3px; font-size: 0.78rem; }