:root {
  --bg: #eceef1;
  --bg2: #f7f8f9;
  --card: rgba(255, 255, 255, 0.86);
  --ink: #121417;
  --mid: #737a83;
  --soft: #aab0b8;
  --line: #e1e4e8;
  --red: #e22718;
  --intake: #2f7cf6;
  --comp: #f0a23b;
  --exh: #8b9096;
  --m1: #81c4ff;
  --m2: #16588e;
  --m3: #e7222e;
  --shadow: 0 1px 2px rgba(18, 20, 23, 0.04), 0 8px 28px rgba(18, 20, 23, 0.06);
  --cw: 272px;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
  --cond: "Barlow Condensed", "Arial Narrow", sans-serif;
}

* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; }
body {
  background: radial-gradient(120% 90% at 50% 38%, var(--bg2) 0%, var(--bg) 62%, #e2e5e9 100%);
  color: var(--ink);
  font: 500 13px/1.35 "Barlow", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  user-select: none;
  -webkit-user-select: none;
}
button { font: inherit; color: inherit; }

#stage { position: fixed; inset: 0; }
#gl { width: 100%; height: 100%; display: block; touch-action: none; cursor: grab; }
#gl.grabbing { cursor: grabbing; }
#gl.pointer { cursor: pointer; }
#lines { position: fixed; inset: 0; width: 100%; height: 100%; pointer-events: none; }
#callouts { position: fixed; inset: 0; pointer-events: none; }

.ui { position: fixed; z-index: 5; transition: opacity 0.35s ease, transform 0.35s ease; }
body.hide-ui .ui, body.hide-ui #callouts, body.hide-ui #lines { opacity: 0; pointer-events: none; }
body.loading .ui { opacity: 0; }

/* ---------------------------------------------------------------- brand */
.brand { top: 22px; left: 24px; width: var(--cw); }
.mstripe { display: flex; gap: 0; width: 34px; height: 4px; transform: skewX(-20deg); margin-bottom: 12px; }
.mstripe i { flex: 1; }
.mstripe i:nth-child(1) { background: var(--m1); }
.mstripe i:nth-child(2) { background: var(--m2); }
.mstripe i:nth-child(3) { background: var(--m3); }
.brand h1 { font: 700 21px/1 "Barlow", sans-serif; margin: 0; letter-spacing: -0.01em; }
.brand h1 span { color: var(--soft); font-weight: 500; }
.brand .sub { margin: 6px 0 0; font: 500 9.5px/1.4 var(--mono); color: var(--mid); text-transform: uppercase; letter-spacing: 0.04em; }
.tach { margin-top: 16px; }
.rpm { display: flex; align-items: baseline; gap: 10px; }
.rpm b { font: italic 800 64px/0.9 var(--cond); color: var(--red); letter-spacing: -0.02em; font-variant-numeric: tabular-nums; min-width: 2.4ch; }
.rpm small { font: 600 9px var(--mono); color: var(--mid); text-transform: uppercase; letter-spacing: 0.1em; }
.tachbar { position: relative; height: 5px; background: var(--line); margin-top: 10px; border-radius: 3px; overflow: hidden; }
.tachbar i { position: absolute; left: 0; top: 0; bottom: 0; width: 10%; background: var(--red); border-radius: 3px; transition: width 0.06s linear; }
.tachbar em { position: absolute; left: 97.1%; right: 0; top: 0; bottom: 0; background: repeating-linear-gradient(-45deg, var(--red) 0 2px, transparent 2px 4px); opacity: 0.5; }
.tachscale { display: flex; justify-content: space-between; font: 500 8.5px var(--mono); color: var(--soft); margin-top: 4px; }
.tachscale .r { color: var(--red); }
.readouts { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 12px; padding-top: 10px; border-top: 1px solid var(--line); }
.readouts small { display: block; font: 600 8.5px var(--mono); color: var(--mid); text-transform: uppercase; letter-spacing: 0.08em; }
.readouts b { font: 700 19px/1.1 var(--cond); font-variant-numeric: tabular-nums; }
.readouts u { text-decoration: none; font: 600 9px var(--mono); color: var(--mid); margin-left: 3px; }
.readouts em { display: block; font: 500 9px var(--mono); color: var(--soft); font-style: normal; }
body.limiter .rpm b { animation: lim 0.08s steps(2) infinite; }
@keyframes lim { 50% { opacity: 0.35; } }

/* ---------------------------------------------------------------- legend */
.legend { top: 24px; left: 50%; transform: translateX(-50%); display: flex; gap: 18px; font: 600 9px var(--mono); text-transform: uppercase; letter-spacing: 0.08em; color: var(--mid); white-space: nowrap; }
.legend i { display: inline-block; width: 14px; height: 2px; background: var(--c); vertical-align: middle; margin-right: 6px; }

/* ---------------------------------------------------------------- cards / columns */
.charts-wrap { display: contents; }
.sheet-close { display: none; }
.col { display: flex; flex-direction: column; gap: 10px; width: var(--cw); overflow-y: auto; scrollbar-width: none; padding: 2px; }
.col::-webkit-scrollbar { display: none; }
.col.left { left: 22px; top: 300px; bottom: 316px; }
.col.right { right: 22px; top: 20px; bottom: 286px; }
body.charts-off .charts { opacity: 0; pointer-events: none; transform: translateY(8px); }

.card {
  background: var(--card);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow);
  border-radius: 10px;
  padding: 11px 12px 10px;
  flex: none;
}
.card > header { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 8px; }
.card > header b { font: 700 9.5px var(--mono); text-transform: uppercase; letter-spacing: 0.1em; }
.card > header span { font: 500 9px var(--mono); color: var(--mid); text-transform: uppercase; letter-spacing: 0.06em; }
.cv { width: 100%; display: block; }
.cv.scrub { cursor: ew-resize; touch-action: none; }
.formula { display: flex; flex-direction: column; gap: 2px; margin-top: 6px; font: 500 9px var(--mono); color: var(--mid); }
.formula b { color: var(--ink); font-weight: 600; font-variant-numeric: tabular-nums; }
.formula.keys { flex-direction: row; flex-wrap: wrap; gap: 4px 12px; }
.k { display: inline-block; width: 10px; height: 2px; vertical-align: middle; margin-right: 5px; }
.k.ink { background: var(--ink); } .k.red { background: var(--red); } .k.blue { background: var(--intake); } .k.grey { background: #6f747b; }

.stroke h2 { font: 700 25px/1 "Barlow", sans-serif; color: var(--red); margin: 0 0 8px; letter-spacing: -0.01em; }
.strokebody { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; align-items: end; }
#st-list { list-style: none; margin: 0; padding: 0; font: 500 9.5px var(--mono); text-transform: uppercase; letter-spacing: 0.06em; color: var(--soft); }
#st-list li { position: relative; padding-left: 22px; line-height: 1.7; transition: color 0.2s; }
#st-list li::before { content: ""; position: absolute; left: 0; top: 50%; width: 14px; height: 1.5px; background: var(--line); }
#st-list li.on { color: var(--ink); font-weight: 700; }
#st-list li.on::before { background: var(--red); height: 2px; }
.press { text-align: right; }
.press b { font: italic 800 38px/0.9 var(--cond); color: var(--red); font-variant-numeric: tabular-nums; display: block; }
.press small { display: block; font: 600 8px/1.3 var(--mono); color: var(--mid); text-transform: uppercase; letter-spacing: 0.08em; margin-top: 4px; }
.pbar { width: 92px; height: 3px; background: var(--line); margin-top: 8px; margin-left: auto; border-radius: 2px; overflow: hidden; }
.pbar i { display: block; height: 100%; width: 0; background: var(--red); }

/* ---------------------------------------------------------------- info card */
.info { left: 50%; top: 74px; transform: translateX(-50%); width: min(340px, calc(100vw - 32px)); padding: 14px 16px 14px; z-index: 8; }
.info[hidden] { display: none; }
.info small { font: 600 9px var(--mono); color: var(--red); text-transform: uppercase; letter-spacing: 0.1em; }
.info h3 { margin: 3px 0 6px; font: 700 20px/1.1 "Barlow", sans-serif; }
.info p { margin: 0 0 10px; color: #3b4047; font-size: 12.5px; line-height: 1.45; }
.info dl { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 0 0 10px; }
.info dl div { border-top: 1px solid var(--line); padding-top: 6px; }
.info dt { font: 600 8px var(--mono); color: var(--mid); text-transform: uppercase; letter-spacing: 0.08em; }
.info dd { margin: 2px 0 0; font: 700 16px var(--cond); font-variant-numeric: tabular-nums; }
.info .x { position: absolute; right: 8px; top: 6px; border: 0; background: none; font-size: 20px; color: var(--mid); cursor: pointer; width: 28px; height: 28px; border-radius: 6px; }
.info .x:hover { background: var(--line); color: var(--ink); }
.info-actions { display: flex; gap: 6px; }

/* ---------------------------------------------------------------- docks */
.dock { background: var(--card); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border: 1px solid rgba(255,255,255,0.9); box-shadow: var(--shadow); border-radius: 12px; padding: 12px; display: flex; flex-direction: column; gap: 10px; }
.controls { left: 22px; bottom: 22px; width: var(--cw); }
.view { right: 22px; bottom: 22px; width: var(--cw); }
.row { display: flex; gap: 6px; align-items: center; }
.btn { border: 1px solid var(--line); background: #fff; border-radius: 7px; padding: 0 10px; height: 30px; font: 600 9.5px var(--mono); text-transform: uppercase; letter-spacing: 0.06em; cursor: pointer; transition: background 0.15s, color 0.15s, border-color 0.15s, transform 0.1s; white-space: nowrap; }
.btn:hover { border-color: var(--soft); }
.btn:active { transform: scale(0.97); }
.btn.primary { background: var(--red); border-color: var(--red); color: #fff; min-width: 72px; }
.btn.primary::before { content: "■ "; font-size: 8px; }
.btn.primary.paused::before { content: "▶ "; }
.btn.rev { flex: 1; background: var(--ink); color: #fff; border-color: var(--ink); touch-action: none; }
.btn.rev.on { background: var(--red); border-color: var(--red); box-shadow: 0 0 0 4px rgba(226,39,24,0.18); }
.btn.ghost { width: 100%; }
.btn.ghost.on { background: var(--ink); color: #fff; border-color: var(--ink); }
.slider { display: grid; grid-template-columns: 1fr auto; row-gap: 4px; font: 600 9px var(--mono); text-transform: uppercase; letter-spacing: 0.07em; color: var(--mid); }
.slider b { color: var(--ink); font-variant-numeric: tabular-nums; }
.slider input { grid-column: 1 / -1; }
.slider[hidden] { display: none; }
input[type=range] { -webkit-appearance: none; appearance: none; width: 100%; height: 18px; background: transparent; margin: 0; cursor: pointer; }
input[type=range]::-webkit-slider-runnable-track { height: 3px; background: linear-gradient(to right, var(--red) var(--p, 0%), var(--line) var(--p, 0%)); border-radius: 2px; }
input[type=range]::-moz-range-track { height: 3px; background: var(--line); border-radius: 2px; }
input[type=range]::-moz-range-progress { height: 3px; background: var(--red); }
input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 13px; height: 13px; border-radius: 3px; background: var(--red); margin-top: -5px; box-shadow: 0 0 0 3px #fff, 0 1px 4px rgba(0,0,0,0.25); }
input[type=range]::-moz-range-thumb { width: 13px; height: 13px; border-radius: 3px; background: var(--red); border: 3px solid #fff; }
.lbl { font: 600 8.5px var(--mono); text-transform: uppercase; letter-spacing: 0.1em; color: var(--mid); margin-right: auto; }
.seg { display: flex; gap: 3px; flex-wrap: nowrap; }
.seg.wrap { flex-wrap: wrap; }
.seg button, .chip { border: 1px solid var(--line); background: #fff; border-radius: 5px; padding: 0 7px; height: 25px; font: 600 8.5px var(--mono); text-transform: uppercase; letter-spacing: 0.05em; cursor: pointer; transition: all 0.15s; white-space: nowrap; }
.seg button:hover, .chip:hover { border-color: var(--soft); }
.seg button.on { background: var(--ink); color: #fff; border-color: var(--ink); }
#ov button.on { background: var(--red); border-color: var(--red); }
.chip.on { background: var(--ink); color: #fff; border-color: var(--ink); }
.row.seg { gap: 3px; }
.grp { display: flex; flex-direction: column; gap: 5px; }

/* ---------------------------------------------------------------- firing order */
.firing { bottom: 26px; left: 50%; transform: translateX(-50%); text-align: center; }
.ft, .fs { font: 600 8.5px var(--mono); text-transform: uppercase; letter-spacing: 0.12em; color: var(--mid); }
.ft span { color: var(--soft); }
.fs { color: var(--soft); margin-top: 8px; }
#fo { display: flex; gap: 10px; justify-content: center; margin-top: 9px; }
#fo button { position: relative; width: 26px; height: 26px; border-radius: 50%; border: 1.5px solid var(--soft); background: rgba(255,255,255,0.8); font: 700 10px var(--mono); cursor: pointer; transition: transform 0.15s, border-color 0.15s; }
#fo button:hover { transform: scale(1.12); border-color: var(--ink); }
#fo button.fire { background: var(--red); border-color: var(--red); color: #fff; box-shadow: 0 0 0 5px rgba(226,39,24,0.18), 0 0 18px rgba(226,39,24,0.55); }
#fo button.tracked::after { content: ""; position: absolute; inset: -6px; border-radius: 50%; border: 1.5px solid var(--ink); }

.hintbar { bottom: 6px; left: 50%; transform: translateX(-50%); font: 500 8.5px var(--mono); color: var(--soft); text-transform: uppercase; letter-spacing: 0.08em; white-space: nowrap; pointer-events: none; }
kbd { font: inherit; border: 1px solid var(--soft); border-radius: 3px; padding: 0 3px; }

/* ---------------------------------------------------------------- callouts */
.co { position: absolute; left: 0; top: 0; opacity: 0; font: 600 9px var(--mono); text-transform: uppercase; letter-spacing: 0.07em; white-space: nowrap; color: var(--ink); transition: opacity 0.25s; will-change: transform; }
.co small { display: block; color: var(--mid); font-weight: 500; font-size: 8px; letter-spacing: 0.08em; }
.co.r { text-align: left; }
.co.l { text-align: right; }
#lines line { stroke: #404650; stroke-width: 0.8; }
#lines circle { fill: var(--red); }
#tooltip { position: fixed; pointer-events: none; z-index: 9; background: var(--ink); color: #fff; font: 600 9px var(--mono); text-transform: uppercase; letter-spacing: 0.08em; padding: 5px 8px; border-radius: 5px; opacity: 0; transform: translate(12px, 12px); transition: opacity 0.12s; white-space: nowrap; }
#tooltip.on { opacity: 1; }
#tooltip small { color: var(--soft); margin-left: 6px; }

/* ---------------------------------------------------------------- loader */
#loader { position: fixed; inset: 0; z-index: 20; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 14px; background: var(--bg); transition: opacity 0.8s ease 0.1s; }
#loader p { font: 600 10px var(--mono); text-transform: uppercase; letter-spacing: 0.16em; color: var(--mid); margin: 0; }
.mstripe.big { width: 70px; height: 7px; margin: 0; }
.lbar { width: 160px; height: 2px; background: var(--line); }
.lbar i { display: block; height: 100%; width: 0; background: var(--red); transition: width 0.3s; }
body:not(.loading) #loader { opacity: 0; pointer-events: none; }

/* ---------------------------------------------------------------- responsive */
@media (max-height: 860px) {
  .col.left { top: 290px; }
  .rpm b { font-size: 54px; }
}
@media (max-width: 1180px) {
  :root { --cw: 248px; }
  .legend { display: none; }
}
@media (max-width: 980px) {
  .col.left { display: none; }
}

@media (max-width: 760px) {
  :root { --cw: auto; }
  body { font-size: 12px; }
  .brand { top: calc(12px + env(safe-area-inset-top)); left: 16px; right: 16px; width: auto; }
  .brand h1 { font-size: 17px; }
  .brand .sub { display: none; }
  .mstripe { margin-bottom: 8px; }
  .tach { margin-top: 6px; display: grid; grid-template-columns: auto 1fr; column-gap: 14px; align-items: end; }
  .rpm b { font-size: 40px; }
  .rpm small { display: none; }
  .tachbar, .tachscale { display: none; }
  .readouts { margin: 0; padding: 0; border: 0; gap: 8px; }
  .readouts b { font-size: 16px; }
  .readouts em { display: none; }

  .charts-wrap { display: flex; flex-direction: column; position: fixed; left: 0; right: 0; bottom: 0; z-index: 12; max-height: 62vh; overflow-y: auto; padding: 14px 16px calc(16px + env(safe-area-inset-bottom)); background: rgba(236,238,241,0.94); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-top: 1px solid var(--line); border-radius: 16px 16px 0 0; transition: transform 0.35s ease; }
  body.charts-off .charts-wrap { transform: translateY(105%); }
  .col { position: static; width: auto; overflow: visible; padding: 0; }
  .col.left { display: flex; margin-top: 10px; }
  .col.right { order: -1; }
  .sheet-close { display: block; order: -2; align-self: center; margin-bottom: 10px; border: 0; background: var(--ink); color: #fff; border-radius: 99px; padding: 7px 14px; font: 600 9px var(--mono); text-transform: uppercase; letter-spacing: 0.1em; }
  body.charts-off .charts { opacity: 1; transform: none; }

  .controls { left: 16px; right: 16px; bottom: calc(16px + env(safe-area-inset-bottom)); width: auto; padding: 10px; gap: 8px; }
  .controls .slider:nth-of-type(2), #speed .lbl { display: none; }
  .controls .row:last-child { display: none; }
  #speed { justify-content: stretch; }
  #speed button { flex: 1; }
  .view { left: 16px; right: 16px; bottom: auto; top: calc(118px + env(safe-area-inset-top)); width: auto; padding: 8px; gap: 6px; flex-direction: row; overflow-x: auto; scrollbar-width: none; }
  .view::-webkit-scrollbar { display: none; }
  .view .grp { flex: none; }
  .view .lbl { display: none; }
  .view .seg.wrap { flex-wrap: nowrap; }
  .view .section-only { display: none; }
  .firing { bottom: calc(222px + env(safe-area-inset-bottom)); }
  .fs, .ft span { display: none; }
  #fo { gap: 7px; margin-top: 6px; }
  #fo button { width: 24px; height: 24px; font-size: 9px; }
  .hintbar { display: none; }
  .info { top: auto; bottom: calc(222px + env(safe-area-inset-bottom)); }
  .co small { display: none; }
}