:root {
  color-scheme: dark;
  --bg: #0b0e13;
  --panel: #11161e;
  --panel-2: #161d27;
  --line: #232c39;
  --text: #e8edf3;
  --muted: #8d9aab;
  --accent: #f2c14e;
  --accent-ink: #1a1405;
  --accent-soft: rgba(242, 193, 78, 0.14);
  --ok: #46c38a;
  --err: #f2685c;
  --font: ui-sans-serif, system-ui, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "Cascadia Mono", Menlo, Consolas, monospace;
  --gutter: max(16px, env(safe-area-inset-left, 0px));
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f6f7f9;
  --panel: #ffffff;
  --panel-2: #f1f3f6;
  --line: #dde2e8;
  --text: #14181f;
  --muted: #5b6675;
  --accent: #a87a06;
  --accent-ink: #ffffff;
  --accent-soft: rgba(168, 122, 6, 0.12);
  --ok: #1f8a5b;
  --err: #c4392d;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    color-scheme: light;
    --bg: #f6f7f9;
    --panel: #ffffff;
    --panel-2: #f1f3f6;
    --line: #dde2e8;
    --text: #14181f;
    --muted: #5b6675;
    --accent: #a87a06;
    --accent-ink: #ffffff;
    --accent-soft: rgba(168, 122, 6, 0.12);
    --ok: #1f8a5b;
    --err: #c4392d;
  }
}

* { box-sizing: border-box; }

html { background: var(--bg); -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 15px/1.55 var(--font);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
a:hover { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
code { font: 500 0.92em var(--mono); }

.sr {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip { position: fixed; left: var(--gutter); top: 8px; z-index: 10; padding: 8px 12px; background: var(--accent); color: var(--accent-ink); transform: translateY(-200%); }
.skip:focus { transform: none; }
[hidden] { display: none !important; }

/* ---------- header ---------- */
.top {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 14px var(--gutter);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; font-size: 16px; }
.brand b { font-weight: 700; letter-spacing: -0.01em; }
.brand-sub { font: 500 11px/1 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); }
.mark { width: 14px; height: 14px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-left: auto; }
.chip {
  display: inline-flex; align-items: center; gap: 6px; min-height: 28px; padding: 0 10px;
  border: 1px solid var(--line); border-radius: 999px;
  font: 500 12px/1 var(--mono); color: var(--muted); white-space: nowrap;
}
.chip::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.chip-live { color: var(--accent); border-color: var(--accent-soft); }
.chip-ok { color: var(--ok); }
.chip-err { color: var(--err); }
.top-link { font-weight: 600; text-decoration: none; }
@media (max-width: 640px) {
  .top { gap: 10px 16px; }
  .top-link { margin-left: auto; }
  .chips { order: 3; width: 100%; margin-left: 0; }
  .chip { font-size: 11px; padding: 0 8px; }
}

.banner {
  margin: 0; padding: 10px var(--gutter);
  background: var(--accent-soft); border-bottom: 1px solid var(--line);
  font-size: 14px;
}

/* ---------- layout ---------- */
main { max-width: 1240px; margin: 0 auto; padding: 32px var(--gutter) 24px; display: grid; gap: 20px; }

.hero { display: grid; gap: 24px; align-items: end; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 960px) { .hero { grid-template-columns: minmax(0, 1fr) auto; } }
.eyebrow { margin: 0 0 8px; font: 500 12px/1.4 var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--accent); }
h1 { margin: 0; max-width: 22ch; font-size: clamp(28px, 3.4vw, 44px); line-height: 1.08; letter-spacing: -0.02em; font-weight: 700; }
.lede { margin: 12px 0 0; max-width: 64ch; color: var(--muted); font-size: 16px; }
.flow { font: 500 0.92em var(--mono); color: var(--text); white-space: nowrap; }
.actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; max-width: 420px; }
.hint { flex-basis: 100%; margin: 0; font-size: 13px; color: var(--muted); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 40px; padding: 0 16px;
  border: 1px solid var(--line); border-radius: 8px;
  background: var(--panel); color: var(--text);
  font: 600 14px/1 var(--font); cursor: pointer;
}
.btn:hover { border-color: var(--muted); }
.btn:disabled { opacity: 0.55; cursor: progress; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.06); border-color: var(--accent); }

/* ---------- processor chain ---------- */
/* Five equal columns put the node centres at 10%, 30%, 50%, 70% and 90%. */
.pipe { padding: 16px 18px 14px; background: var(--panel); border: 1px solid var(--line); border-radius: 12px; }
.pipe-track { position: relative; }
.pipe-track::before { content: ""; position: absolute; left: 10%; right: 10%; top: 6px; height: 2px; background: var(--line); }
.pipe-steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); }
.pipe-steps li { display: grid; justify-items: center; gap: 2px; min-width: 0; text-align: center; }
.pipe-steps li::before { content: ""; position: relative; z-index: 1; width: 14px; height: 14px; margin-bottom: 6px; border: 2px solid var(--line); border-radius: 50%; background: var(--panel); }
.pipe.has-events li:last-child::before { border-color: var(--accent); }
.pipe-steps b { font: 600 12.5px/1.2 var(--mono); }
.pipe-steps small { font-size: 12px; line-height: 1.3; color: var(--muted); }
.pipe-dot { position: absolute; z-index: 2; top: 2px; left: 10%; width: 10px; height: 10px; margin-left: -5px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft), 0 0 14px var(--accent); opacity: 0; }
.pipe-error .pipe-dot { background: var(--err); box-shadow: 0 0 0 4px rgba(242, 104, 92, 0.16), 0 0 14px var(--err); }
.pipe-now { margin: 12px 0 0; font: 500 12.5px/1.4 var(--mono); color: var(--muted); text-align: center; overflow-wrap: anywhere; }
@media (max-width: 640px) {
  .pipe { padding: 14px 8px 12px; }
  .pipe-steps b { font-size: 10.5px; letter-spacing: -0.02em; }
  .pipe-steps small { display: none; }
}

/* ---------- KPIs ---------- */
/* Phones: total and tokens get full rows, the three counts share one. */
.kpis { display: grid; gap: 1px; grid-template-columns: repeat(3, minmax(0, 1fr)); background: var(--line); border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.kpi { display: flex; flex-direction: column; gap: 6px; padding: 14px; background: var(--panel); min-width: 0; }
.kpi-main, .kpi-wide { grid-column: 1 / -1; }
.kpi-wide { order: 1; }
@media (min-width: 760px) {
  .kpis { grid-template-columns: 1.25fr 0.7fr 1fr 1.6fr 0.7fr; }
  .kpi { padding: 16px 18px; }
  .kpi-main, .kpi-wide { grid-column: auto; order: 0; }
}
.kpi-label { font: 500 11px/1.3 var(--mono); letter-spacing: 0.05em; text-transform: uppercase; color: var(--muted); }
.kpi strong { font: 600 clamp(18px, 1.8vw, 22px)/1.1 var(--mono); font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.kpi-main strong { font-size: clamp(26px, 3vw, 36px); color: var(--accent); }

/* ---------- panels ---------- */
.grid { display: grid; gap: 20px; grid-template-columns: minmax(0, 1fr); }
@media (min-width: 960px) { .grid { grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr); } }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 12px; padding: 18px; min-width: 0; }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
h2 { margin: 0; font-size: 16px; font-weight: 650; letter-spacing: -0.005em; }
.panel-note { font: 500 11px/1 var(--mono); color: var(--muted); }
.empty { margin: 4px 0 0; color: var(--muted); font-size: 14px; }

/* tenant bars */
.tenants { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.tenant-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 6px 12px; align-items: baseline; }
.tenant-name { font: 600 14px/1.2 var(--mono); overflow-wrap: anywhere; }
.tenant-cost { font: 600 14px/1.2 var(--mono); font-variant-numeric: tabular-nums; text-align: right; }
.tenant-cost small { margin-left: 8px; font-weight: 500; color: var(--muted); }
.bar { grid-column: 1 / -1; height: 8px; border-radius: 999px; background: var(--panel-2); overflow: hidden; }
.bar i { display: block; height: 100%; border-radius: inherit; background: var(--accent); min-width: 2px; }
.tenant-meta { grid-column: 1 / -1; font-size: 12.5px; color: var(--muted); }

/* checks */
.checks { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.checks li { display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 2px 10px; }
.checks .tick { grid-row: span 2; width: 22px; height: 22px; border-radius: 50%; display: grid; place-items: center; font: 700 12px/1 var(--mono); background: var(--panel-2); color: var(--muted); }
.checks .pass .tick { background: rgba(70, 195, 138, 0.16); color: var(--ok); }
.checks .fail .tick { background: rgba(242, 104, 92, 0.16); color: var(--err); }
.checks b { font-weight: 650; }
.checks p { margin: 0; font-size: 13.5px; color: var(--muted); overflow-wrap: anywhere; }

/* filters */
.filters { display: flex; flex-wrap: wrap; gap: 6px; }
.filter { min-height: 32px; padding: 0 12px; border: 1px solid var(--line); border-radius: 999px; background: transparent; color: var(--muted); font: 500 12px/1 var(--mono); cursor: pointer; }
.filter[aria-pressed="true"] { background: var(--accent-soft); border-color: var(--accent); color: var(--text); }

/* events table */
.table-wrap { overflow-x: auto; margin: 0 -18px; padding: 0 18px; }
.events { width: 100%; min-width: 760px; border-collapse: collapse; font-size: 13.5px; }
.events th { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: left; font: 500 11px/1.3 var(--mono); letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted); white-space: nowrap; }
.events td { padding: 9px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.events .num { text-align: right; font-family: var(--mono); font-variant-numeric: tabular-nums; white-space: nowrap; }
.events .idx { color: var(--muted); font-family: var(--mono); }
.events .mono { font-family: var(--mono); white-space: nowrap; }
.events tr.is-error td { background: rgba(242, 104, 92, 0.06); }
.kind { display: inline-block; padding: 2px 8px; border-radius: 6px; background: var(--panel-2); font: 500 11.5px/1.5 var(--mono); white-space: nowrap; }
.kind-error { background: rgba(242, 104, 92, 0.16); color: var(--err); }
.raw-btn { min-height: 28px; padding: 0 8px; border: 1px solid var(--line); border-radius: 6px; background: transparent; color: var(--muted); font: 500 11px/1 var(--mono); cursor: pointer; }
.raw-btn[aria-expanded="true"] { color: var(--text); border-color: var(--muted); }
.raw td { padding: 0 10px 12px; }
.raw pre { margin: 0; padding: 12px 14px; border-radius: 8px; background: var(--panel-2); font: 12px/1.6 var(--mono); white-space: pre-wrap; overflow-wrap: anywhere; }

/* custom span form */
.custom summary { cursor: pointer; font-weight: 650; }
.span-form { display: grid; gap: 12px; margin-top: 16px; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); align-items: end; }
.span-form label { display: grid; gap: 6px; font: 500 12px/1.3 var(--mono); color: var(--muted); }
.span-form input, .span-form select { min-height: 40px; padding: 0 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--panel-2); color: var(--text); font: 500 14px/1 var(--mono); width: 100%; }
.span-form .check { display: flex; align-items: center; gap: 8px; min-height: 40px; }
.span-form .check input { width: 18px; min-height: 18px; }

.foot { max-width: 1240px; margin: 0 auto; padding: 8px var(--gutter) 32px; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; font: 500 12px/1.5 var(--mono); color: var(--muted); }
.foot p { margin: 0; overflow-wrap: anywhere; }

@media (prefers-reduced-motion: no-preference) {
  .bar i { transition: width 0.5s ease; }

  .chip-live::before { animation: live 1.6s ease-in-out infinite; }

  /* one span crossing the chain (TRAVEL_MS in app.js), each node lighting as it passes */
  .pipe.run .pipe-dot { animation: travel 240ms linear; }
  .pipe.run li::before { animation: node 160ms ease-out; }
  .pipe.run li:nth-child(2)::before { animation-delay: 60ms; }
  .pipe.run li:nth-child(3)::before { animation-delay: 120ms; }
  .pipe.run li:nth-child(4)::before { animation-delay: 180ms; }
  .pipe.run li:nth-child(5)::before { animation-delay: 240ms; }
  .pipe-error.run li::before { --flash: var(--err); }

  .events tr.enter td { animation: land 0.3s ease-out; }
  .tenant-row.enter { animation: rise 0.3s ease-out; }
  .checks li.flip .tick { animation: pop 0.42s cubic-bezier(0.2, 1.6, 0.4, 1); }
  .kpi strong.bump { animation: glow 0.45s ease-out; }
}

@keyframes rise { from { opacity: 0; transform: translateY(8px); } }
@keyframes live { 50% { opacity: 0.35; } }
@keyframes travel {
  0% { left: 10%; opacity: 0; }
  10%, 90% { opacity: 1; }
  100% { left: 90%; opacity: 0; }
}
@keyframes node { 0% { border-color: var(--flash, var(--accent)); background: var(--flash, var(--accent)); transform: scale(1.3); } }
@keyframes land { from { opacity: 0; transform: translateY(-6px); background: var(--accent-soft); } }
@keyframes pop { from { transform: scale(0.4); } }
@keyframes glow { from { text-shadow: 0 0 16px var(--accent); } }