/* RELAY command center. See DESIGN.md for the system. */

:root {
  --bg: oklch(0.165 0.006 60);
  --bg-deep: oklch(0.14 0.006 60);
  --surface: oklch(0.2 0.007 60);
  --surface-2: oklch(0.235 0.008 60);
  --line: oklch(0.3 0.008 60);
  --line-soft: oklch(0.25 0.007 60);
  --ink: oklch(0.93 0.01 80);
  --ink-muted: oklch(0.7 0.012 70);
  --ink-faint: oklch(0.56 0.01 70);
  --accent: oklch(0.74 0.17 52);
  --accent-ink: oklch(0.2 0.03 52);
  --accent-soft: oklch(0.74 0.17 52 / 0.14);
  --good: oklch(0.78 0.13 155);
  --bad: oklch(0.64 0.19 25);   /* deepened so it stays distinct from --good for deuteranopes (dE 13.4) */
  --bad-soft: oklch(0.64 0.19 25 / 0.16);

  --f-ui: "Space Grotesk", ui-sans-serif, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, monospace;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --hold-ms: 1200ms;
  --gap: 1.6rem;
  --pad: clamp(1.6rem, 2vw, 2.4rem);
}

* { box-sizing: border-box; }
html { font-size: 10px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font: 400 1.4rem/1.45 var(--f-ui);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
/* Grain: the panel glass of an instrument stack, not a flat fill */
body::after {
  content: "";
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  opacity: 0.05;
  pointer-events: none;
  z-index: 9999;
}
[hidden] { display: none !important; }
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.muted { color: var(--ink-muted); }

/* ---------- type primitives ---------- */
.label {
  margin: 0;
  font: 500 1.1rem/1.3 var(--f-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.idx { color: var(--accent); }
.hint { margin: 0.8rem 0 0; font-size: 1.2rem; line-height: 1.45; color: var(--ink-faint); max-width: 60ch; }
.num, .table td, .ledger dd { font-variant-numeric: tabular-nums; }

/* ---------- buttons ---------- */
.btn {
  position: relative;
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 4.4rem; padding: 0 1.8rem;
  border: 1px solid var(--line); border-radius: 0.4rem;
  background: var(--surface-2);
  font: 600 1.2rem/1 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase;
  overflow: hidden;
  transition: border-color 150ms var(--ease), background-color 150ms var(--ease), transform 150ms var(--ease);
}
.btn:hover { border-color: var(--ink-muted); }
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn--accent { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn--accent:hover { border-color: var(--ink); }
.btn--danger { border-color: var(--bad); color: var(--ink); background: var(--bad-soft); width: 100%; margin-top: 2.4rem; }
.btn--danger:hover { border-color: var(--ink); }
.btn--hold { width: 100%; margin-top: 1rem; }
.link {
  background: none; border: 0; padding: 0.4rem 0;
  font: 500 1.1rem/1 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-muted);
  border-bottom: 1px solid var(--line);
  transition: color 150ms var(--ease), border-color 150ms var(--ease);
}
.link:hover { color: var(--ink); border-color: var(--ink); }

/* Press-and-hold: the fill IS the countdown. Releasing early cancels. */
.hold { touch-action: none; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; }
.hold__fill {
  position: absolute; inset: 0;
  background: currentColor; opacity: 0.18;
  transform: scaleX(0); transform-origin: left;
  transition: transform 180ms var(--ease);
}
.hold__text { position: relative; }
.hold.is-holding .hold__fill { transform: scaleX(1); transition: transform var(--hold-ms) linear; }
.btn--danger .hold__fill { background: var(--bad); opacity: 0.45; }
.hold.is-armed { border-color: var(--accent); }

/* ---------- login ---------- */
.login { min-height: 100vh; display: grid; place-items: center; padding: 2.4rem 1.6rem; }
.login__form { width: min(100%, 42rem); display: grid; gap: 2rem; }
.login__title { margin: 0; font: 600 clamp(3.6rem, 7vw, 5.6rem)/0.95 var(--f-ui); letter-spacing: -0.03em; }
.login__error { margin: 0; min-height: 2rem; color: var(--bad); font: 500 1.2rem/1.4 var(--f-mono); }
.field { display: grid; gap: 0.8rem; }
.field input, .field select, .num {
  min-height: 4.4rem; padding: 0 1.2rem;
  background: var(--bg-deep); border: 1px solid var(--line); border-radius: 0.4rem;
  font: 500 1.5rem/1 var(--f-mono);
  transition: border-color 150ms var(--ease);
}
.field input:hover, .num:hover, .field select:hover { border-color: var(--ink-faint); }
.field input:focus, .num:focus, .field select:focus { border-color: var(--accent); outline: none; }

/* ---------- top bar ---------- */
.app { padding: 0 var(--pad) 4rem; max-width: 1680px; margin: 0 auto; }
.top {
  display: flex; align-items: center; justify-content: space-between; gap: 1.6rem;
  padding: 1.8rem 0 1.4rem;
  border-bottom: 1px solid var(--line-soft);
}
.top__brand, .top__meta { display: flex; align-items: center; gap: 1.2rem; flex-wrap: wrap; }
.top__meta { gap: 2rem; }
.wordmark { font: 700 2rem/1 var(--f-ui); letter-spacing: -0.02em; }
.badge {
  display: inline-flex; align-items: center; min-height: 2.4rem; padding: 0 0.9rem;
  border: 1px solid var(--line); border-radius: 0.3rem;
  font: 600 1.05rem/1 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-muted);
}
.badge--mode { border-color: var(--accent); color: var(--accent); }
.badge.is-live { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.badge.is-halted { background: var(--bad); border-color: var(--bad); color: oklch(0.18 0.03 25); }

/* ---------- 01 / the rail ---------- */
.rail { position: relative; padding: 2.8rem 0 2.4rem; }
.rail__track {
  position: absolute; left: 0; right: 0; top: calc(2.8rem + 0.55rem);
  height: 1px; background: var(--line); overflow: hidden;
}
.rail__pulse {
  position: absolute; top: 0; left: 0; height: 1px; width: 12%;
  background: var(--accent);
  box-shadow: 0 0 12px 1px var(--accent);
  transform: translateX(-100%);
}
.rail.is-pulsing .rail__pulse { animation: pulse 1400ms var(--ease) 1; }
@keyframes pulse { from { transform: translateX(-100%); } to { transform: translateX(840%); } }
.rail__nodes { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 1.6rem; }
.node { position: relative; display: grid; gap: 0.3rem; align-content: start; }
.node__dot {
  width: 1.1rem; height: 1.1rem; border-radius: 50%;
  background: var(--bg); border: 1px solid var(--ink-faint);
  margin-bottom: 1.2rem;
  transition: background-color 250ms var(--ease), border-color 250ms var(--ease), transform 250ms var(--ease);
}
.node[data-state="ok"] .node__dot { background: var(--good); border-color: var(--good); }
.node[data-state="warn"] .node__dot { background: var(--accent); border-color: var(--accent); }
.node[data-state="down"] .node__dot { background: var(--bad); border-color: var(--bad); }
.node.is-lit .node__dot { transform: scale(1.6); }
.node__idx { font: 500 1.1rem/1 var(--f-mono); color: var(--accent); letter-spacing: 0.05em; }
.node__name { font: 600 1.7rem/1.15 var(--f-ui); letter-spacing: -0.01em; }
.node__status { font: 600 1.1rem/1.3 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; }
.node[data-state="ok"] .node__status { color: var(--ink); }
.node[data-state="down"] .node__status { color: var(--bad); }
.node[data-state="warn"] .node__status { color: var(--accent); }
.node[data-state="idle"] .node__status { color: var(--ink-muted); }
.node__detail { font: 400 1.2rem/1.35 var(--f-mono); color: var(--ink-faint); overflow-wrap: anywhere; }
.node__name .short { display: none; }

/* ---------- grid ---------- */
.grid {
  display: grid; gap: var(--gap);
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-template-areas:
    "book book book book book book book book ctrl ctrl ctrl ctrl"
    "pos  pos  pos  pos  pos  pos  pos  pos  ctrl ctrl ctrl ctrl"
    "tape tape tape tape tape tape tape lim  lim  lim  lim  lim"
    "tape tape tape tape tape tape tape fill fill fill fill fill";
  align-items: start;
}
.panel {
  min-width: 0;
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: 0.6rem;
  padding: var(--pad);
}
.panel > .label:first-child, .panel__head { margin-bottom: 2rem; }
.panel__head { display: flex; justify-content: space-between; align-items: center; gap: 1.2rem; flex-wrap: wrap; }
.panel__head .label { margin: 0; }
.book { grid-area: book; }
.control { grid-area: ctrl; background: var(--bg-deep); }
.positions { grid-area: pos; }
.limits { grid-area: lim; }
.tape { grid-area: tape; }
.fills { grid-area: fill; }

/* ---------- 02 / book ---------- */
.book { display: grid; grid-template-columns: max-content minmax(20rem, 1fr); gap: 2.4rem 4rem; }
.book > .label { grid-column: 1 / -1; margin-bottom: 0; }
.book__hero { align-self: end; }
.hero { display: flex; align-items: baseline; gap: 1.2rem; }
.hero__value {
  font: 600 clamp(5.6rem, 5.6vw, 9.6rem)/0.9 var(--f-ui);
  letter-spacing: -0.04em;
  transition: opacity 200ms var(--ease);
}
.hero__glyph { font: 600 2.4rem/1 var(--f-mono); align-self: center; }
.hero__glyph.up { color: var(--good); }
.hero__glyph.down { color: var(--bad); }
.hero__caption { margin: 1.4rem 0 0; display: flex; gap: 1.2rem; flex-wrap: wrap; }

.spark { margin: 0; align-self: end; display: grid; gap: 1rem; }
.spark__plot { position: relative; height: 13rem; }
@media (max-width: 760px) { .spark__plot { height: 10rem; } }
.spark svg { display: block; width: 100%; height: 100%; overflow: visible; }
.spark svg:focus-visible { outline-offset: 6px; }
.spark .s-grid { stroke: var(--line-soft); stroke-width: 1; }
.spark .s-line { fill: none; stroke: var(--accent); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; vector-effect: non-scaling-stroke; }
.spark .s-area { fill: var(--accent-soft); stroke: none; }
.spark .s-cross { stroke: var(--ink-muted); stroke-width: 1; vector-effect: non-scaling-stroke; }
.spark .s-dot { fill: var(--accent); stroke: var(--surface); stroke-width: 2; }
.spark .s-empty { fill: var(--ink-faint); font: 500 11px var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; }
.spark__tip {
  position: absolute; top: -0.4rem; transform: translate(-50%, -100%);
  padding: 0.6rem 0.9rem; border: 1px solid var(--line); border-radius: 0.4rem;
  background: var(--bg-deep); white-space: nowrap; pointer-events: none;
  font: 500 1.2rem/1.3 var(--f-mono);
}
.spark__tip strong { display: block; font: 600 1.4rem/1.2 var(--f-mono); color: var(--ink); }
.spark__tip span { color: var(--ink-muted); }

.ledger {
  grid-column: 1 / -1; margin: 0;
  display: flex; flex-wrap: wrap; gap: 1.2rem 0;
  border-top: 1px solid var(--line-soft); padding-top: 1.8rem;
}
.ledger > div { flex: 1 1 14rem; padding-right: 2rem; }
.ledger > div + div { border-left: 1px solid var(--line-soft); padding-left: 2rem; }
.ledger dd { margin: 0.6rem 0 0; font: 500 2rem/1.1 var(--f-mono); letter-spacing: -0.01em; }

/* value flash on change: brief, transform/opacity only via an outline pseudo */
.flash { animation: flash 700ms var(--ease) 1; }
@keyframes flash { 0% { opacity: 0.55; } 100% { opacity: 1; } }

/* ---------- 03 / control ---------- */
.control { display: grid; gap: 0; }
.kill {
  width: 100%; display: grid; gap: 0.4rem; justify-items: start; text-align: left;
  padding: 2rem 2rem; border-radius: 0.6rem;
  border: 1px solid var(--bad); background: var(--bad-soft);
  position: relative; overflow: hidden;
  transition: background-color 150ms var(--ease), transform 150ms var(--ease), border-color 150ms var(--ease);
}
.kill:hover { background: oklch(0.7 0.18 25 / 0.24); }
.kill:active { transform: scale(0.99); }
.kill__label { font: 700 3.2rem/1 var(--f-ui); letter-spacing: -0.02em; text-transform: uppercase; position: relative; }
.kill__sub { font: 500 1.1rem/1.3 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-muted); position: relative; }
.kill.is-halted { border-color: var(--accent); background: var(--accent-soft); }
.kill.is-halted .hold__fill { background: var(--accent); opacity: 0.35; }

.switches { list-style: none; margin: 2.4rem 0 0; padding: 0; display: grid; gap: 0.4rem; }
.switch {
  width: 100%; display: flex; align-items: center; gap: 1.4rem; text-align: left;
  padding: 1.2rem 0; background: none; border: 0; border-bottom: 1px solid var(--line-soft);
}
.switch__track {
  flex: none; width: 4.4rem; height: 2.4rem; border-radius: 1.2rem;
  border: 1px solid var(--line); background: var(--surface);
  position: relative; transition: background-color 200ms var(--ease), border-color 200ms var(--ease);
}
.switch__thumb {
  position: absolute; top: 0.3rem; left: 0.3rem; width: 1.6rem; height: 1.6rem; border-radius: 50%;
  background: var(--ink-muted); transition: transform 200ms var(--ease), background-color 200ms var(--ease);
}
.switch[aria-checked="true"] .switch__track { background: var(--accent); border-color: var(--accent); }
.switch[aria-checked="true"] .switch__thumb { transform: translateX(2rem); background: var(--accent-ink); }
.switch:hover .switch__track { border-color: var(--ink-muted); }
.switch.is-armed .switch__track { border-color: var(--accent); }
.switch.is-armed .switch__hint { color: var(--accent); }
.switch__text { display: grid; gap: 0.2rem; }
.switch__name { font: 600 1.5rem/1.2 var(--f-ui); }
.switch__hint { font-size: 1.2rem; color: var(--ink-faint); }

.meter { margin-top: 2.4rem; }
.meter__head { display: flex; justify-content: space-between; align-items: end; gap: 1rem; }
.meter__limit { display: flex; align-items: center; gap: 0.8rem; }
.meter__limit .num { width: 7.6rem; min-height: 3.6rem; text-align: right; }
.meter__bar { margin-top: 1.2rem; height: 0.6rem; border-radius: 0.3rem; background: var(--surface-2); overflow: hidden; }
.meter__fill { display: block; height: 100%; width: 100%; background: var(--accent); transform: scaleX(0); transform-origin: left; transition: transform 400ms var(--ease); }
.meter__fill.is-full { background: var(--bad); }
.meter__value { margin: 1rem 0 0; font: 600 2.4rem/1 var(--f-mono); }
.meter__value .muted { font-size: 1.3rem; font-weight: 500; }

.manual { margin-top: 2.8rem; padding-top: 2.4rem; border-top: 1px solid var(--line-soft); }
.manual .label { margin-bottom: 1.2rem; }
.manual__row { display: flex; gap: 1rem; }
.manual__row .field { flex: 1; min-width: 0; }
.manual__row select { width: 100%; }
.stepper { display: flex; }
.stepper .num { width: 6.4rem; text-align: center; border-radius: 0; border-left: 0; border-right: 0; }
.stepper__btn {
  width: 4.4rem; min-height: 4.4rem; border: 1px solid var(--line); background: var(--surface-2);
  font: 500 1.8rem/1 var(--f-mono);
  transition: background-color 150ms var(--ease);
}
.stepper__btn:first-child { border-radius: 0.4rem 0 0 0.4rem; }
.stepper__btn:last-child { border-radius: 0 0.4rem 0.4rem 0; }
.stepper__btn:hover { background: var(--line); }

/* ---------- tables ---------- */
.table { width: 100%; border-collapse: collapse; }
.table th {
  text-align: left; padding: 0 1.2rem 1rem 0;
  font: 500 1.05rem/1.2 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint);
  border-bottom: 1px solid var(--line-soft); white-space: nowrap;
}
.table td { padding: 1.3rem 1.2rem 1.3rem 0; border-bottom: 1px solid var(--line-soft); font: 500 1.4rem/1.3 var(--f-mono); vertical-align: middle; }
.table tr:last-child td { border-bottom: 0; }
.table .r { text-align: right; }
.table td:last-child, .table th:last-child { padding-right: 0; }
.inst { display: grid; gap: 0.2rem; }
.inst__key { font: 600 1.6rem/1.1 var(--f-ui); }
.inst__sub { font: 400 1.15rem/1.2 var(--f-mono); color: var(--ink-faint); }
.pos-val { font-weight: 600; }
.pos-work { display: block; font-size: 1.1rem; color: var(--accent); }
.pnl { white-space: nowrap; }
.pnl__g { font-size: 1rem; margin-right: 0.4rem; }
.pnl__g.up { color: var(--good); }
.pnl__g.down { color: var(--bad); }
.warn-line { display: block; margin-top: 0.4rem; font: 500 1.1rem/1.3 var(--f-mono); color: var(--accent); }
.row-btn {
  position: relative; overflow: hidden; white-space: nowrap;
  min-height: 3.6rem; padding: 0 1.2rem; border-radius: 0.4rem;
  border: 1px solid var(--line); background: none;
  font: 600 1.05rem/1 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase;
  transition: border-color 150ms var(--ease);
}
.row-btn:hover { border-color: var(--bad); }
.row-btn .hold__fill { background: var(--bad); opacity: 0.4; }
.row-btn:disabled { opacity: 0.35; cursor: not-allowed; border-color: var(--line); }
.table--limits .num { width: 7.2rem; min-height: 3.6rem; text-align: right; font-size: 1.4rem; }
.table--limits td { padding-top: 0.9rem; padding-bottom: 0.9rem; }
.mini-switch { padding: 0; border: 0; background: none; display: inline-flex; }
.mini-switch .switch__track { width: 3.8rem; height: 2.2rem; }
.mini-switch .switch__thumb { width: 1.4rem; height: 1.4rem; }
.mini-switch[aria-checked="true"] .switch__track { background: var(--accent); border-color: var(--accent); }
.mini-switch[aria-checked="true"] .switch__thumb { transform: translateX(1.6rem); background: var(--accent-ink); }
.empty { padding: 2rem 0 0.4rem; color: var(--ink-faint); font: 500 1.2rem/1.4 var(--f-mono); letter-spacing: 0.06em; text-transform: uppercase; }

/* ---------- 06 / tape ---------- */
.chips { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.chip {
  min-height: 3.2rem; padding: 0 1.1rem; border-radius: 1.6rem;
  border: 1px solid var(--line); background: none;
  font: 500 1.05rem/1 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-muted);
  transition: border-color 150ms var(--ease), color 150ms var(--ease), background-color 150ms var(--ease);
}
.chip:hover { color: var(--ink); border-color: var(--ink-muted); }
.chip[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.tape__list { list-style: none; margin: 0; padding: 0; max-height: 64rem; overflow-y: auto; overscroll-behavior: contain; }
.tick {
  display: grid; grid-template-columns: 8.4rem 9.6rem minmax(0, 1fr); gap: 1.2rem; align-items: baseline;
  padding: 1rem 0; border-bottom: 1px solid var(--line-soft);
  font: 400 1.3rem/1.4 var(--f-mono);
}
.tick.is-new { animation: tick-in 500ms var(--ease) 1; }
@keyframes tick-in { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }
.tick__time { color: var(--ink-faint); }
.tick__tag {
  justify-self: start; padding: 0.3rem 0.7rem; border-radius: 0.3rem;
  border: 1px solid var(--line); font: 600 1rem/1.2 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-muted);
}
.tick__tag--order, .tick__tag--flatten, .tick__tag--bracket_fill { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.tick__tag--dry_run { border-color: var(--accent); color: var(--accent); }
.tick__tag--rejected, .tick__tag--error, .tick__tag--invalid, .tick__tag--unauthorized { border-color: var(--bad); color: var(--bad); }
.tick__tag--received { border-color: var(--ink-muted); color: var(--ink); }
.tick__text { color: var(--ink); overflow-wrap: anywhere; }
.tick__text .muted { color: var(--ink-faint); }

/* ---------- dock (mobile) + toasts ---------- */
.dock { display: none; }
.toasts { position: fixed; right: 1.6rem; bottom: 1.6rem; display: grid; gap: 0.8rem; z-index: 50; max-width: min(42rem, calc(100vw - 3.2rem)); }
.toast {
  padding: 1.2rem 1.6rem; border-radius: 0.5rem; border: 1px solid var(--line);
  background: var(--surface-2); font: 500 1.3rem/1.4 var(--f-mono);
  animation: tick-in 300ms var(--ease) 1;
}
.toast--bad { border-color: var(--bad); }
.toast--good { border-color: var(--accent); }
.noscript { padding: 2rem; }

/* ---------- responsive ---------- */
@media (max-width: 1180px) {
  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-areas: "book book" "pos ctrl" "tape ctrl" "tape lim" "fill fill";
  }
  .book { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  :root { --pad: 1.6rem; --gap: 1.2rem; }
  .app { padding: 0 1.6rem calc(9.6rem + env(safe-area-inset-bottom)); }
  .grid { grid-template-columns: minmax(0, 1fr); grid-template-areas: "book" "pos" "ctrl" "tape" "lim" "fill"; }
  .top { padding-top: 1.4rem; }
  .top__chi, .top__unit { display: none; }
  .top { flex-wrap: nowrap; align-items: flex-start; }
  .top__brand { gap: 0.8rem; }
  .top__meta { gap: 1.4rem; }

  .rail { padding: 2rem 0 1.6rem; }
  .rail__track { top: calc(2rem + 0.55rem); }
  .rail__nodes { gap: 0.6rem; }
  .node__name { font-size: 1.15rem; font-family: var(--f-mono); font-weight: 600; letter-spacing: 0.02em; }
  .node__idx { display: none; }
  .node__name .full { display: none; }
  .node__name .short { display: inline; }
  .node__status { font-size: 0.95rem; letter-spacing: 0.04em; }
  .node__detail { display: none; }

  .hero__value { font-size: clamp(4.8rem, 15vw, 6.4rem); }
  .ledger > div { flex-basis: 45%; }
  .ledger > div + div { border-left: 0; padding-left: 0; }
  .ledger dd { font-size: 1.7rem; }

  /* positions + fills become stacked cards */
  .table--cards thead { display: none; }
  .table--cards tr { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem 1.2rem; padding: 1.4rem 0; border-bottom: 1px solid var(--line-soft); }
  .table--cards tr:last-child { border-bottom: 0; }
  .table--cards td, .table--cards td.r { border: 0; padding: 0; text-align: left; }
  .table--cards td[data-label]::before {
    content: attr(data-label); display: block; margin-bottom: 0.3rem;
    font: 500 1rem/1.2 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint);
  }
  .table--cards td.span { grid-column: 1 / -1; }
  .table--cards .row-btn { width: 100%; min-height: 4.4rem; }

  .tick { grid-template-columns: 6.4rem minmax(0, 1fr); gap: 0.4rem 1rem; }
  .tick__text { grid-column: 1 / -1; }
  .tape__list { max-height: none; overflow: visible; }

  .dock {
    display: grid; grid-template-columns: 1fr 1.4fr; gap: 0.8rem;
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 40;
    padding: 1rem 1.6rem calc(1rem + env(safe-area-inset-bottom));
    background: var(--bg-deep); border-top: 1px solid var(--line);
  }
  .dock__btn {
    position: relative; overflow: hidden; min-height: 5.2rem; border-radius: 0.5rem;
    border: 1px solid var(--bad); background: var(--bad-soft);
    font: 700 1.3rem/1 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase;
  }
  .dock__btn.is-halted { border-color: var(--accent); background: var(--accent-soft); }
  .dock__btn.is-halted .hold__fill { background: var(--accent); opacity: 0.35; }
  .dock__btn--danger { border-color: var(--line); background: var(--surface-2); }
  .dock__btn--danger .hold__fill { background: var(--bad); opacity: 0.45; }
  .control__kill, #flatten-all, #flatten-all + .hint { display: none; }
  .switches { margin-top: 0; }
  .toasts { bottom: calc(8.4rem + env(safe-area-inset-bottom)); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 1ms !important; animation-iteration-count: 1 !important; transition-duration: 1ms !important; }
  /* the hold countdown is information, not decoration: keep it */
  .hold.is-holding .hold__fill { transition-duration: var(--hold-ms) !important; }
  .rail.is-pulsing .rail__pulse { animation: none; }
}

/* =====================================================================
   PERFORMANCE VIEW
   ===================================================================== */

/* view switch in the header */
.views { display: flex; gap: 0.4rem; margin-right: auto; margin-left: 2.4rem; }
.views__tab {
  display: inline-flex; align-items: center; min-height: 3.2rem; padding: 0 1.2rem;
  border-radius: 0.4rem; border: 1px solid transparent;
  font: 600 1.15rem/1 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-muted); text-decoration: none;
  transition: color 150ms var(--ease), border-color 150ms var(--ease), background-color 150ms var(--ease);
}
.views__tab:hover { color: var(--ink); border-color: var(--line); }
.views__tab[aria-current="page"] { color: var(--ink); background: var(--surface-2); border-color: var(--line); }

.perf {
  display: grid; gap: var(--gap); padding-top: 2.4rem;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  grid-template-areas:
    "bar   bar   bar   bar   bar   bar   bar   bar   bar   bar   bar   bar"
    "sum   sum   sum   sum   sum   sum   sum   sum   sum   sum   sum   sum"
    "cal   cal   cal   cal   cal   cal   cal   curve curve curve curve curve"
    "cal   cal   cal   cal   cal   cal   cal   bars  bars  bars  bars  bars"
    "trd   trd   trd   trd   trd   trd   trd   trd   brk   brk   brk   brk";
  align-items: start;
}
.perf__bar { grid-area: bar; display: flex; align-items: center; gap: 1.6rem 2.4rem; flex-wrap: wrap; }
.perf-sum { grid-area: sum; }
.perf-cal { grid-area: cal; }
.perf-curve { grid-area: curve; }
.perf-bars { grid-area: bars; }
.perf-trades { grid-area: trd; }
.perf-break { grid-area: brk; }

/* segmented period control */
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 0.5rem; padding: 0.3rem; background: var(--bg-deep); }
.seg__btn {
  min-height: 3.6rem; padding: 0 1.4rem; border: 0; border-radius: 0.3rem; background: none;
  font: 600 1.15rem/1 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-muted);
  transition: color 150ms var(--ease), background-color 150ms var(--ease);
}
.seg__btn:hover { color: var(--ink); }
.seg__btn[aria-pressed="true"] { background: var(--ink); color: var(--bg); }
.period { display: inline-flex; align-items: center; gap: 0.8rem; }
.period__nav {
  width: 3.6rem; height: 3.6rem; border-radius: 0.4rem; border: 1px solid var(--line); background: var(--surface);
  font: 500 2rem/1 var(--f-ui); color: var(--ink-muted);
  transition: color 150ms var(--ease), border-color 150ms var(--ease);
}
.period__nav:hover:not(:disabled) { color: var(--ink); border-color: var(--ink-muted); }
.period__nav:disabled { opacity: 0.3; cursor: default; }
.period__label { min-width: 16rem; text-align: center; font: 600 1.7rem/1.2 var(--f-ui); letter-spacing: -0.01em; }
.perf__filter select {
  min-height: 3.6rem; padding: 0 1rem; border-radius: 0.4rem; border: 1px solid var(--line); background: var(--bg-deep);
  font: 500 1.3rem/1 var(--f-mono);
}

/* summary */
.perf-sum { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 2rem 4.8rem; align-items: end; }
.perf-sum > .label { grid-column: 1 / -1; margin-bottom: 0; }
.perf-sum__sub { margin: 1.2rem 0 0; font: 500 1.3rem/1.5 var(--f-mono); color: var(--ink-muted); }
.perf-sum .hint { grid-column: 1 / -1; margin: 0; }
.stats {
  margin: 0; display: grid; grid-template-columns: repeat(6, minmax(0, 1fr));
  border-top: 1px solid var(--line-soft); border-left: 1px solid var(--line-soft);
}
.stats > div { padding: 1.2rem 1.4rem; border-right: 1px solid var(--line-soft); border-bottom: 1px solid var(--line-soft); min-width: 0; }
.stats dt { margin: 0; font: 500 1rem/1.3 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); }
.stats dd { margin: 0.5rem 0 0; font: 500 1.7rem/1.15 var(--f-mono); font-variant-numeric: tabular-nums; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.stats dd small { display: block; margin-top: 0.3rem; font-size: 1.05rem; line-height: 1.3; color: var(--ink-faint); white-space: normal; }

/* calendar: polarity = tint hue + the sign in the text; magnitude = tint strength */
.cal__grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)) minmax(0, 1.1fr); gap: 0.4rem; }
.cal__dow { padding: 0 0.6rem 0.6rem; font: 500 1rem/1 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); }
.cell {
  position: relative; min-height: 8.4rem; padding: 0.8rem; border-radius: 0.4rem;
  border: 1px solid var(--line-soft); background: var(--bg-deep);
  display: flex; flex-direction: column; justify-content: space-between; text-align: left;
  font: 500 1.2rem/1.2 var(--f-mono); color: var(--ink);
  transition: border-color 150ms var(--ease);
}
button.cell { cursor: pointer; }
button.cell:hover { border-color: var(--ink-muted); }
.cell--out { opacity: 0.32; }
/* oklab, not oklch: mixing in oklch swings green through yellow toward the warm background (olive) */
.cell--up { background: color-mix(in oklab, var(--good) var(--t, 20%), var(--bg-deep)); border-color: color-mix(in oklab, var(--good) 40%, var(--line-soft)); }
.cell--down { background: color-mix(in oklab, var(--bad) var(--t, 20%), var(--bg-deep)); border-color: color-mix(in oklab, var(--bad) 45%, var(--line-soft)); }
.cell--sel { outline: 2px solid var(--accent); outline-offset: 1px; }
.cell--today .cell__day { color: var(--accent); }
.cell__day { font-size: 1.1rem; color: var(--ink-muted); }
.cell__pnl { font-size: 1.5rem; font-weight: 600; letter-spacing: -0.01em; }
.cell__n { font-size: 1rem; color: var(--ink-muted); }
.cell--week { background: var(--surface-2); border-style: dashed; }
.cal__year { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.6rem; }
.cal__year .cell { min-height: 10rem; }
.cal__year .cell__day { font-size: 1.2rem; text-transform: uppercase; letter-spacing: 0.08em; }

/* charts */
.chart { position: relative; height: 22rem; }
.chart svg { display: block; width: 100%; height: 100%; overflow: visible; }
.chart svg:focus-visible { outline-offset: 6px; }
.chart .c-grid { stroke: var(--line-soft); stroke-width: 1; }
.chart .c-zero { stroke: var(--ink-faint); stroke-width: 1; }
.chart .c-axis { fill: var(--ink-faint); font: 500 10px var(--f-mono); letter-spacing: 0.04em; }
.chart .c-line { fill: none; stroke: var(--accent); stroke-width: 2; stroke-linejoin: round; vector-effect: non-scaling-stroke; }
.chart .c-area { fill: var(--accent-soft); }
.chart .c-pt { fill: var(--accent); stroke: var(--surface); stroke-width: 2; }
.chart .c-up { fill: var(--good); }
.chart .c-down { fill: var(--bad); }
.chart .c-bar.is-hover { opacity: 0.75; }
.chart .c-cross { stroke: var(--ink-muted); stroke-width: 1; }
.chart .c-empty { fill: var(--ink-faint); font: 500 11px var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; }
.chart__tip {
  position: absolute; top: 0; transform: translate(-50%, -100%);
  padding: 0.6rem 0.9rem; border: 1px solid var(--line); border-radius: 0.4rem; background: var(--bg-deep);
  white-space: nowrap; pointer-events: none; font: 500 1.2rem/1.35 var(--f-mono); z-index: 2;
}
.chart__tip strong { display: block; font: 600 1.4rem/1.2 var(--f-mono); }
.chart__tip span { color: var(--ink-muted); }

/* trades + breakdown */
.side-tag {
  display: inline-block; padding: 0.25rem 0.6rem; border-radius: 0.3rem; border: 1px solid var(--line);
  font: 600 1rem/1.2 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-muted);
}
.side-tag--long { border-color: var(--good); color: var(--ink); }
.side-tag--short { border-color: var(--bad); color: var(--ink); }
.fee-flag { color: var(--accent); margin-left: 0.3rem; cursor: help; }
.table--trades tbody tr { cursor: default; }
.table--break .grp { font: 600 1.4rem/1.2 var(--f-ui); }
.table--break .grp-head td { padding-top: 1.8rem; font: 500 1rem/1 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); }
.table--break .grp-head:first-child td { padding-top: 0.4rem; }

@media (min-width: 761px) {
  .table--trades.table--cards thead { display: table-header-group; }
}
@media (max-width: 1180px) {
  .perf { grid-template-columns: minmax(0, 1fr); grid-template-areas: "bar" "sum" "cal" "curve" "bars" "trd" "brk"; }
  .perf-sum { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .views { margin-left: 0; }
  .views__tab { padding: 0 0.8rem; font-size: 1.05rem; }
  .top { flex-wrap: wrap; }
  .perf__bar { gap: 1.2rem; }
  .seg { width: 100%; }
  .seg__btn { flex: 1; padding: 0; font-size: 1rem; }
  .period { flex: 1; justify-content: space-between; }
  .period__label { min-width: 0; font-size: 1.5rem; }
  .perf__filter, .perf__filter select { width: 100%; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cal__grid { grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 0.3rem; }
  .cal__dow--week, .cell--week { display: none; }
  .cell { min-height: 5.6rem; padding: 0.5rem; }
  .cell__pnl { font-size: 1.1rem; }
  .cell__n { display: none; }
  .cal__year { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .cal__year .cell { min-height: 7.2rem; }
  .chart { height: 18rem; }
}

/* =====================================================================
   BACKTEST
   ===================================================================== */
.bt {
  display: grid; gap: var(--gap); padding-top: 2.4rem;
  grid-template-columns: repeat(12, minmax(0, 1fr)); align-items: start;
}
.bt > .panel { grid-column: 1 / -1; }
.bt > .bt-grid { grid-column: span 8; }
.bt > .bt-check { grid-column: span 4; }
.bt-lede { margin: 0 0 2rem; font: 600 2rem/1.3 var(--f-ui); letter-spacing: -0.01em; }
.bt-head .stats { margin-bottom: 1.4rem; }
.bt-facts dd { white-space: normal; }
.bt-steps { margin: 0; padding-left: 2rem; display: grid; gap: 0.8rem; max-width: 72ch; color: var(--ink-muted); }
.bt-steps code, .bt-check code { font: 500 1.25rem/1 var(--f-mono); color: var(--ink); }

.bt-legend { display: flex; flex-wrap: wrap; gap: 0.6rem 2rem; margin-bottom: 1.2rem; font: 500 1.2rem/1.4 var(--f-mono); color: var(--ink-muted); }
.bt-key { display: inline-flex; align-items: center; gap: 0.8rem; }
.bt-key::before { content: ""; width: 2rem; border-top: 2px solid var(--accent); }
.bt-key--sel { color: var(--ink); }
.bt-key--base::before { border-top: 1.5px solid var(--ink-faint); }
.bt-key--limit::before { border-top: 1px dashed var(--bad); }
.bt-key--ref::before { border-top: 1px dashed var(--ink-faint); }
.bt-key--zone::before { border-top: 0; height: 1.2rem; background: var(--ink); opacity: 0.08; }
.chart .c-zone { fill: var(--ink); opacity: 0.05; }
.chart .c-ref { fill: none; stroke: var(--ink-faint); stroke-width: 1; stroke-dasharray: 3 4; vector-effect: non-scaling-stroke; }
.bt-steady-chips { margin-bottom: 1.2rem; }
.bt-hours-wrap { overflow-x: auto; }
.bt-hours th, .bt-hours td { padding: 0.4rem 0.8rem 0.4rem 0; font-size: 1.15rem; text-align: right; }
.bt-hours th:first-child, .bt-hours td:first-child { text-align: left; }
.bt-hours td.up { color: var(--good); }
.bt-hours td.down { color: var(--bad); }
.bt-chart { height: 28rem; margin-bottom: 2.4rem; }
.chart .c-base { fill: none; stroke: var(--ink-faint); stroke-width: 1.5; stroke-linejoin: round; vector-effect: non-scaling-stroke; }
.chart .c-limit { stroke: var(--bad); stroke-width: 1; stroke-dasharray: 4 4; }
.chart .c-pt--base { fill: var(--ink-faint); }

.bt-table td { font-size: 1.3rem; }
.bt-table td.r { white-space: nowrap; }
.bt-table th { white-space: normal; }   /* long headers wrap instead of widening the page */
@media (min-width: 761px) {
  .bt-table .bt-gap { padding-left: 2.4rem; }
  .bt-sortable td { padding-top: 0.9rem; padding-bottom: 0.9rem; }
}
.bt .hint { max-width: 96ch; }
.bt-table .inst__key { font-size: 1.45rem; }
.bt-table tr.is-sel .inst__key::before { content: "● "; color: var(--accent); }
.bt-tag {
  display: inline-block; margin-left: 0.8rem; padding: 0.2rem 0.6rem; border-radius: 0.3rem; vertical-align: 0.15em;
  border: 1px solid var(--accent); font: 600 0.95rem/1.2 var(--f-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent);
}
.bt-bad { color: var(--bad); }
.th-sort {
  padding: 0; border: 0; background: none; cursor: pointer;
  font: inherit; letter-spacing: inherit; text-transform: inherit; color: inherit;
}
.th-sort:hover { color: var(--ink); }
th[aria-sort] .th-sort { color: var(--ink); }
th[aria-sort="descending"] .th-sort::after { content: " ↓"; }
th[aria-sort="ascending"] .th-sort::after { content: " ↑"; }
.bt-more { margin-top: 1.6rem; }
.bt-more:hover { border-color: var(--ink-muted); }

.bt-search .stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.bt-good { color: var(--good); }
.bt-small { font-size: 1.15rem; color: var(--ink-muted); }
.bt-sub { margin: 2.8rem 0 1.2rem; }
.bt-filters { display: flex; align-items: center; gap: 1.2rem; flex-wrap: wrap; }
.bt-search-input { min-height: 3.6rem; width: 26rem; padding: 0 1rem; border-radius: 0.4rem; border: 1px solid var(--line); background: var(--bg-deep); font: 500 1.3rem/1 var(--f-mono); }
.bt-search-input:focus { border-color: var(--accent); outline: none; }
.bt-check-label { display: inline-flex; align-items: center; gap: 0.6rem; font: 500 1.15rem/1 var(--f-mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-muted); cursor: pointer; }
.bt-check-label input { accent-color: var(--accent); width: 1.6rem; height: 1.6rem; }
.bt-quarters { display: inline-flex; gap: 0.6rem; font-size: 1.1rem; }
.bt-quarters .up::before { content: "▲"; color: var(--good); font-size: 0.8rem; margin-right: 0.2rem; }
.bt-quarters .down::before { content: "▼"; color: var(--bad); font-size: 0.8rem; margin-right: 0.2rem; }
.bt-checks { display: grid; gap: 1.2rem; }
.bt-check-card { display: grid; gap: 1.2rem; padding: 1.6rem; border-radius: 0.5rem; border: 1px solid var(--line-soft); background: var(--bg-deep); }
.bt-check-card .acct-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }

@media (max-width: 760px) {
  .bt-quarters { flex-wrap: wrap; }
  /* card rows: long labels wrap instead of widening the columns past the screen */
  .bt-table.table--cards tr { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bt-table.table--cards td.r { white-space: normal; }
  .bt-search .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bt-filters, .bt-filters .perf__filter, .bt-filters select, .bt-search-input { width: 100%; }
}
@media (max-width: 1180px) {
  .bt > .bt-grid, .bt > .bt-check { grid-column: 1 / -1; }
  .bt .stats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 760px) {
  .bt .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .bt-lede { font-size: 1.6rem; }
  .bt-chart { height: 22rem; }
  .bt-check-card .acct-facts { grid-template-columns: minmax(0, 1fr); }
}

/* =====================================================================
   ACCOUNTS
   ===================================================================== */
.acct-pick select {
  min-height: 3.2rem; max-width: 22rem; padding: 0 0.8rem; border-radius: 0.4rem;
  border: 1px solid var(--line); background: var(--bg-deep);
  font: 600 1.15rem/1 var(--f-mono); letter-spacing: 0.04em;
}
.badge.is-live-money { background: var(--bad); border-color: var(--bad); color: oklch(0.97 0.01 25); }
/* a thin red edge on every screen while a real-money account is selected */
body.live-money .app { box-shadow: inset 0 3px 0 var(--bad); }
.acct-banner {
  margin: 1.2rem 0 0; padding: 1.2rem 1.6rem; border-radius: 0.5rem;
  border: 1px solid var(--bad); background: var(--bad-soft);
  font: 500 1.3rem/1.45 var(--f-mono);
}

.accts {
  display: grid; gap: var(--gap); padding-top: 2.4rem;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); align-items: start;
}
.acct-cards { display: grid; gap: 1.2rem; }
.acct-card {
  display: grid; gap: 1.4rem; padding: 1.6rem; border-radius: 0.5rem;
  border: 1px solid var(--line-soft); background: var(--bg-deep);
}
.acct-card.is-current { border-color: var(--ink-faint); }
.acct-card--live { border-left: 1px solid var(--bad); box-shadow: inset 3px 0 0 var(--bad); }
.acct-head { display: flex; justify-content: space-between; align-items: start; gap: 1rem; }
.acct-facts { margin: 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.acct-facts dt { font: 500 1rem/1.3 var(--f-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-faint); }
.acct-facts dd { margin: 0.4rem 0 0; font: 500 1.3rem/1.35 var(--f-mono); overflow-wrap: anywhere; }
.st-ok { color: var(--ink); }
.st-ok::before { content: "● "; color: var(--good); }
.st-warn::before { content: "● "; color: var(--accent); }
.st-down::before { content: "● "; color: var(--bad); }
.acct-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; align-items: center; }
.acct-hook { display: grid; gap: 0.6rem; }
.acct-code {
  display: block; padding: 0.8rem 1rem; border-radius: 0.4rem; border: 1px solid var(--line-soft);
  background: var(--surface); font: 400 1.15rem/1.45 var(--f-mono); overflow-wrap: anywhere; user-select: all;
}
.acct-live { display: grid; gap: 0.8rem; padding-top: 1.2rem; border-top: 1px solid var(--line-soft); }
.acct-confirm-input { width: 16rem; text-transform: uppercase; }
.acct-confirm-btn { width: auto; margin: 0; padding: 0 1.6rem; }
.acct-form { display: grid; gap: 1.4rem; }
.acct-form select, .acct-form input:not(.num) { min-height: 4.4rem; padding: 0 1.2rem; background: var(--bg-deep); border: 1px solid var(--line); border-radius: 0.4rem; font: 500 1.4rem/1 var(--f-mono); }
.acct-form .num { width: 100%; }

@media (max-width: 1180px) { .accts { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 760px) {
  .acct-pick select { max-width: 15rem; font-size: 1rem; }
  .acct-facts { grid-template-columns: minmax(0, 1fr); }
}
.acct-hook > .row-btn, .acct-actions .row-btn { justify-self: start; width: auto; }