/* Стенд ПИД-регулятора.
   Образ — лабораторный прибор: светло-серая лицевая панель с органами управления
   и тёмные «экраны» с механизмом и осциллограммами. Цвет каналов один и тот же
   на сцене, в графиках и на регуляторах: жёлтый — измеряемая величина, голубой — P,
   пурпурный — I, зелёный — D, белый — уставка, оранжевый — нагрузка, красный — насыщение. */

:root {
  color-scheme: light;
  --panel: #ccd1cb;
  --panel-hi: #e0e3de;
  --panel-mid: #d5d9d3;
  --panel-lo: #bcc1bb;
  --panel-edge: #9aa099;
  --ink: #1b2022;
  --ink-2: #454d50;
  --ink-3: #697174;
  --groove: #a3a9a2;
  --fill-neutral: #4f5856;
  --rule-dark: rgba(28, 34, 32, .2);
  --rule-light: rgba(255, 255, 255, .55);
  --key-top: #e8ebe6;
  --key-bottom: #cdd1cb;
  --key-shadow: inset 0 1px 0 rgba(255, 255, 255, .75), 0 1px 1px rgba(0, 0, 0, .2);
  --well-shadow: inset 0 1px 2px rgba(0, 0, 0, .2);
  --focus: #0a62bd;
  --cap-top: #f6f7f4;
  --cap-bottom: #c4c9c2;
  --cap-edge: #737a72;

  --screen: #0d1518;
  --screen-2: #111b1f;
  --screen-grid: #18262b;
  --screen-grid-2: #223339;
  --screen-ink: #c7d5d9;
  --screen-ink-2: #81979d;
  --screen-ink-3: #5a6d72;
  --bezel: #060909;

  --ch1: #f3d016;
  --ch2: #2bc6e8;
  --ch3: #f160c0;
  --ch4: #4fd68f;
  --sp: #e9eff1;
  --out: #dce6e9;
  --load: #ff8b2c;
  --alarm: #ff4b3e;
  --warn: #f0a51a;
  --go: #2d9c5c;

  --font-ui: 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-osd: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  --sidebar-w: 376px;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --panel: #2a2f32;
    --panel-hi: #3a4044;
    --panel-mid: #31373a;
    --panel-lo: #1e2326;
    --panel-edge: #151819;
    --ink: #e3e8e9;
    --ink-2: #a8b1b4;
    --ink-3: #7e888b;
    --groove: #171b1d;
    --fill-neutral: #b4bdbf;
    --rule-dark: rgba(0, 0, 0, .55);
    --rule-light: rgba(255, 255, 255, .05);
    --key-top: #41484c;
    --key-bottom: #33393c;
    --key-shadow: inset 0 1px 0 rgba(255, 255, 255, .08), 0 1px 2px rgba(0, 0, 0, .55);
    --well-shadow: inset 0 1px 3px rgba(0, 0, 0, .6);
    --focus: #5ba8ff;
    --cap-top: #d9ddd8;
    --cap-bottom: #9da39c;
    --cap-edge: #101314;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --panel: #2a2f32;
  --panel-hi: #3a4044;
  --panel-mid: #31373a;
  --panel-lo: #1e2326;
  --panel-edge: #151819;
  --ink: #e3e8e9;
  --ink-2: #a8b1b4;
  --ink-3: #7e888b;
  --groove: #171b1d;
  --fill-neutral: #b4bdbf;
  --rule-dark: rgba(0, 0, 0, .55);
  --rule-light: rgba(255, 255, 255, .05);
  --key-top: #41484c;
  --key-bottom: #33393c;
  --key-shadow: inset 0 1px 0 rgba(255, 255, 255, .08), 0 1px 2px rgba(0, 0, 0, .55);
  --well-shadow: inset 0 1px 3px rgba(0, 0, 0, .6);
  --focus: #5ba8ff;
  --cap-top: #d9ddd8;
  --cap-bottom: #9da39c;
  --cap-edge: #101314;
}

/* ---------- основа ---------- */

*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--panel);
  color: var(--ink);
  font: 400 13px/1.4 var(--font-ui);
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}
button, input, select { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.icon { width: 16px; height: 16px; flex: none; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
[hidden] { display: none !important; }

.app {
  height: 100%;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
}

/* ---------- клавиши (кнопки панели) ---------- */

.key {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  height: 32px; padding: 0 12px;
  border: 1px solid var(--panel-edge);
  border-radius: 5px;
  background: linear-gradient(var(--key-top), var(--key-bottom));
  box-shadow: var(--key-shadow);
  color: var(--ink);
  font-weight: 500;
  white-space: nowrap;
  user-select: none;
}
.key:hover { filter: brightness(1.04); }
.key:active, .key[aria-pressed="true"] {
  background: linear-gradient(var(--key-bottom), var(--key-top));
  box-shadow: var(--well-shadow);
}
.key:disabled { opacity: .5; cursor: default; filter: none; }
.key.icon-only { width: 32px; padding: 0; }
.key.small { height: 26px; padding: 0 9px; font-size: 12.5px; gap: 6px; }
.key.small .icon { width: 14px; height: 14px; }
.key.wide { width: 100%; }

.led {
  width: 8px; height: 8px; border-radius: 50%;
  background: #5b625d;
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, .5);
  flex: none;
}
.led.on { background: #43d17f; box-shadow: 0 0 6px #43d17f, inset 0 -1px 1px rgba(0, 0, 0, .25); }
.led.hold { background: var(--warn); box-shadow: 0 0 6px var(--warn), inset 0 -1px 1px rgba(0, 0, 0, .25); }

/* ---------- верхняя панель ---------- */

.topbar {
  display: flex; align-items: center; flex-wrap: wrap; gap: 10px 14px;
  padding-block: 9px;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
  border-bottom: 1px solid var(--rule-dark);
  box-shadow: 0 1px 0 var(--rule-light);
  position: relative; z-index: 2;
}
.brand { display: flex; align-items: center; gap: 9px; margin-right: 4px; }
.brand-mark { width: 26px; height: 26px; flex: none; }
.brand-name { font-size: 15.5px; font-weight: 600; letter-spacing: .005em; white-space: nowrap; }
.brand-sub { color: var(--ink-3); font-size: 12px; white-space: nowrap; }

.seg {
  display: inline-flex; align-items: stretch; gap: 2px;
  padding: 2px;
  border-radius: 6px;
  background: var(--panel-lo);
  box-shadow: var(--well-shadow);
}
.seg > button {
  border: 1px solid transparent;
  border-radius: 4px;
  background: transparent;
  padding: 0 12px;
  height: 28px;
  color: var(--ink-2);
  font-weight: 500;
  white-space: nowrap;
}
.seg > button:hover { color: var(--ink); }
.seg > button[aria-pressed="true"], .seg > button[aria-selected="true"] {
  background: linear-gradient(var(--key-top), var(--key-bottom));
  border-color: var(--panel-edge);
  box-shadow: var(--key-shadow);
  color: var(--ink);
}
.seg.small > button { height: 24px; padding: 0 9px; font-size: 12.5px; }
.seg.stretch { display: flex; }
.seg.stretch > button { flex: 1 1 0; padding: 0 4px; }

.cluster { display: flex; align-items: center; gap: 6px; }
.speed { display: inline-flex; align-items: center; gap: 6px; color: var(--ink-2); font-size: 12.5px; }

.clock {
  display: inline-flex; align-items: baseline; gap: 12px;
  height: 32px; padding: 0 12px;
  border-radius: 5px;
  background: var(--screen);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, .7), 0 1px 0 var(--rule-light);
  color: var(--screen-ink);
  font: 500 13px/32px var(--font-osd);
  white-space: nowrap;
}
.clock .lag { color: var(--warn); }
.topbar .spacer { flex: 1 1 auto; }

/* ---------- основная область ---------- */

.main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--sidebar-w);
  min-height: 0;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
}
.workspace {
  display: flex; flex-direction: column;
  min-height: 0; min-width: 0;
  padding: 12px 8px 12px 0;
}

.screen {
  position: relative;
  padding: 4px;
  border-radius: 11px;
  background: var(--bezel);
  box-shadow: 0 1px 0 var(--rule-light), inset 0 0 0 1px rgba(255, 255, 255, .03);
  min-height: 0;
}
.screen-face {
  position: relative;
  height: 100%;
  border-radius: 8px;
  background: var(--screen);
  overflow: hidden;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .035);
}
.scene-screen { flex: 1 1 auto; min-height: 180px; }
.plots-screen { flex: 0 0 auto; height: 40%; min-height: 150px; }

.splitter {
  flex: none;
  height: 12px;
  cursor: row-resize;
  display: grid; place-items: center;
  touch-action: none;
}
.splitter::before {
  content: '';
  width: 44px; height: 4px; border-radius: 2px;
  background: var(--panel-lo);
  box-shadow: var(--well-shadow);
}
.splitter:hover::before, .splitter.dragging::before { background: var(--ink-3); }

#scene { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; }

/* ---------- экранная индикация (OSD) ---------- */

.hud {
  position: absolute; top: 10px; left: 10px;
  display: grid;
  grid-template-columns: auto auto auto;
  gap: 1px 10px;
  align-items: baseline;
  padding: 8px 11px 9px;
  border-radius: 7px;
  background: rgba(13, 21, 24, .78);
  border: 1px solid var(--screen-grid-2);
  color: var(--screen-ink);
  font: 400 12.5px/1.5 var(--font-osd);
  pointer-events: none;
  max-width: calc(100% - 20px);
}
.hud .k { color: var(--screen-ink-2); font-family: var(--font-ui); font-size: 12px; white-space: nowrap; }
.hud .v { text-align: right; white-space: nowrap; }
.hud .u { color: var(--screen-ink-3); white-space: nowrap; }
.hud .sw { display: inline-block; width: 8px; height: 8px; border-radius: 2px; margin-right: 6px; vertical-align: 0; }
.hud .bar {
  grid-column: 1 / -1;
  height: 5px; margin: 3px 0 4px;
  border-radius: 3px;
  background: var(--screen-grid);
  position: relative; overflow: hidden;
}
.hud .bar > i { position: absolute; top: 0; bottom: 0; left: 50%; background: var(--out); }
.hud .bar.sat > i { background: var(--alarm); }
.hud .bar::after { content: ''; position: absolute; left: 50%; top: -1px; bottom: -1px; width: 1px; background: var(--screen-ink-3); }

.badges {
  position: absolute; top: 10px; right: 10px;
  display: flex; flex-direction: column; align-items: flex-end; gap: 6px;
  pointer-events: none;
}
.badge {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 4px 10px 4px 8px;
  border-radius: 999px;
  background: rgba(13, 21, 24, .85);
  border: 1px solid var(--screen-grid-2);
  color: var(--screen-ink);
  font: 500 12px/1.3 var(--font-ui);
  white-space: nowrap;
}
.badge::before { content: ''; width: 7px; height: 7px; border-radius: 50%; background: var(--screen-ink-2); }
.badge.alarm { border-color: rgba(255, 75, 62, .6); color: #ffd9d5; }
.badge.alarm::before { background: var(--alarm); box-shadow: 0 0 6px var(--alarm); }
.badge.warn { border-color: rgba(240, 165, 26, .55); color: #ffe7bd; }
.badge.warn::before { background: var(--warn); }
.badge.info::before { background: var(--ch2); }

.hint {
  position: absolute; left: 12px; bottom: 9px; right: 300px;
  max-width: 560px;
  color: var(--screen-ink-3);
  font: 400 12px/1.35 var(--font-ui);
  pointer-events: none;
}
.hint b { color: var(--screen-ink-2); font-weight: 500; }

.alert {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  width: min(420px, calc(100% - 32px));
  padding: 16px 18px;
  border-radius: 9px;
  background: rgba(17, 27, 31, .96);
  border: 1px solid rgba(255, 75, 62, .55);
  color: var(--screen-ink);
  box-shadow: 0 10px 40px rgba(0, 0, 0, .5);
}
.alert h2 { margin: 0 0 6px; font-size: 15px; font-weight: 600; color: #ffd9d5; display: flex; align-items: center; gap: 8px; }
.alert p { margin: 0 0 12px; color: var(--screen-ink-2); }

/* ---------- графики ---------- */

.plots-face { display: flex; flex-direction: column; }
.plots-toolbar {
  display: flex; align-items: center; flex-wrap: wrap; gap: 6px 12px;
  padding: 6px 8px 6px 10px;
  border-bottom: 1px solid var(--screen-grid);
  background: var(--screen-2);
  font: 400 12px/1 var(--font-ui);
  color: var(--screen-ink-2);
}
.plots-toolbar .grow { flex: 1 1 auto; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  height: 24px; padding: 0 9px;
  border-radius: 5px;
  border: 1px solid var(--screen-grid-2);
  background: transparent;
  color: var(--screen-ink-2);
  font: 400 12px/1 var(--font-ui);
  white-space: nowrap;
}
.chip:hover { color: var(--screen-ink); border-color: #33494f; }
.chip[aria-pressed="true"] { color: var(--screen-ink); background: #1a2a2f; border-color: #33494f; }
.chip .icon { width: 14px; height: 14px; }
.chip .tick {
  width: 10px; height: 10px; border-radius: 2px;
  border: 1px solid var(--screen-ink-3);
}
.chip[aria-pressed="true"] .tick { background: var(--screen-ink); border-color: var(--screen-ink); box-shadow: inset 0 0 0 2px #1a2a2f; }
.chipset { display: inline-flex; gap: 0; }
.chipset .chip { border-radius: 0; margin-left: -1px; }
.chipset .chip:first-child { border-radius: 5px 0 0 5px; margin-left: 0; }
.chipset .chip:last-child { border-radius: 0 5px 5px 0; }
.chipset .chip[aria-pressed="true"] { position: relative; z-index: 1; }

.menu-wrap { position: relative; }
.menu {
  position: absolute; right: 0; top: calc(100% + 6px);
  z-index: 20;
  min-width: 250px;
  padding: 6px;
  border-radius: 8px;
  background: #142126;
  border: 1px solid #2a3f45;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .5);
  display: flex; flex-direction: column; gap: 2px;
}
.menu.left { left: 0; right: auto; min-width: 200px; }
.chip .count { color: var(--screen-ink-3); }
.menu button {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 9px;
  border: 0; border-radius: 5px;
  background: transparent;
  color: var(--screen-ink);
  text-align: left;
  font-size: 12.5px;
}
.menu button:hover { background: #1d3036; }
.menu .sub { color: var(--screen-ink-3); font-size: 11.5px; margin-left: auto; }
.menu label { display: flex; align-items: center; gap: 8px; padding: 6px 9px; color: var(--screen-ink-2); font-size: 12px; }
.menu hr { border: 0; border-top: 1px solid #23363c; margin: 4px 2px; }

.plots { flex: 1 1 auto; min-height: 0; display: flex; flex-direction: column; position: relative; }
.chart { position: relative; flex: 1 1 0; min-height: 64px; display: flex; flex-direction: column; border-top: 1px solid var(--screen-grid); }
.chart:first-child { border-top: 0; }
.chart-head {
  display: flex; align-items: center; flex-wrap: wrap; gap: 2px 12px;
  padding: 4px 10px 0 10px;
  min-height: 22px;
  font: 400 11.5px/1.2 var(--font-osd);
  color: var(--screen-ink-2);
}
.chart-title { color: var(--screen-ink); font-family: var(--font-ui); font-size: 12px; font-weight: 500; margin-right: 2px; }
.chart-unit { color: var(--screen-ink-3); font-family: var(--font-ui); font-size: 11.5px; }
.legend { display: inline-flex; align-items: center; gap: 6px; padding: 1px 4px; border: 0; background: transparent; color: var(--screen-ink-2); font: inherit; border-radius: 4px; }
.legend:hover { background: #172529; color: var(--screen-ink); }
.legend .sw { width: 14px; height: 3px; border-radius: 2px; background: currentColor; flex: none; }
.legend .sw.dash { background: repeating-linear-gradient(90deg, currentColor 0 4px, transparent 4px 7px); height: 2px; }
.legend .val { color: var(--screen-ink); min-width: 6ch; text-align: right; }
.legend.off { opacity: .4; }
.legend.off .val { visibility: hidden; }
.chart-select {
  margin-left: auto;
  height: 20px; padding: 0 4px;
  background: #142126; color: var(--screen-ink-2);
  border: 1px solid var(--screen-grid-2); border-radius: 4px;
  font: 400 11.5px var(--font-ui);
}
.chart-body { position: relative; flex: 1 1 auto; min-height: 0; }
.chart-body canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.plots.pannable .chart-body { cursor: grab; }
.plots.panning .chart-body { cursor: grabbing; }
.history-chip { position: absolute; right: 10px; bottom: 8px; z-index: 3; }
.plots-empty { position: absolute; inset: 0; display: grid; place-items: center; color: var(--screen-ink-3); font-size: 12.5px; pointer-events: none; }

/* ---------- боковая панель ---------- */

.sidebar {
  min-height: 0;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 4px 4px 28px 12px;
  scrollbar-width: thin;
  scrollbar-color: var(--panel-edge) transparent;
}
.group { border-top: 1px solid var(--rule-dark); box-shadow: inset 0 1px 0 var(--rule-light); }
.group:first-child { border-top: 0; box-shadow: none; }
.group-head {
  display: flex; align-items: center; gap: 8px;
  padding: 11px 0 9px;
}
.group-toggle {
  display: flex; align-items: center; gap: 8px;
  flex: 1 1 auto; min-width: 0;
  padding: 0; border: 0; background: none;
  font-size: 14px; font-weight: 600; text-align: left;
  color: var(--ink);
}
.group-toggle .icon { width: 15px; height: 15px; color: var(--ink-3); transition: transform .15s ease; }
.group.collapsed .group-toggle .icon { transform: rotate(-90deg); }
.group-aside { display: flex; align-items: center; gap: 8px; color: var(--ink-3); font-size: 12px; }
.group-body { padding: 0 0 14px; display: flex; flex-direction: column; gap: 10px; }
.group.collapsed .group-body { display: none; }

.subhead { display: flex; align-items: center; gap: 8px; margin-top: 4px; font-weight: 500; color: var(--ink-2); font-size: 12.5px; }
.subhead::after { content: ''; flex: 1 1 auto; height: 1px; background: var(--rule-dark); box-shadow: 0 1px 0 var(--rule-light); }
.note { margin: 0; color: var(--ink-3); font-size: 12px; line-height: 1.45; }
.note b { color: var(--ink-2); font-weight: 500; }

/* строка параметра: подпись, значение, единица; ниже — ползунок */
.ctl { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 3px 8px; align-items: center; }
.ctl-label { display: flex; align-items: baseline; gap: 6px; min-width: 0; color: var(--ink); }
.ctl-label .sub { color: var(--ink-3); font-size: 12px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.ctl-value { display: flex; align-items: center; gap: 5px; justify-self: end; }
.ctl-unit { color: var(--ink-3); font-size: 12px; width: 74px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.ctl .fader { grid-column: 1 / -1; }
.ctl.disabled { opacity: .45; pointer-events: none; }

.num {
  width: 78px; height: 26px;
  padding: 0 7px;
  border: 1px solid var(--panel-edge);
  border-radius: 4px;
  background: var(--panel-lo);
  box-shadow: var(--well-shadow);
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.num:focus { outline: 2px solid var(--focus); outline-offset: 0; }
.num.invalid { border-color: var(--alarm); }

/* бегунок — колпачок фейдера */
.fader {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 22px; margin: 0;
  background: transparent;
  cursor: pointer;
  --f0: 0%; --f1: 0%; --fc: var(--fill-neutral);
}
.fader:focus-visible { outline-offset: 0; }
.fader::-webkit-slider-runnable-track {
  height: 6px; border-radius: 3px;
  background:
    linear-gradient(to right, transparent var(--f0), var(--fc) var(--f0), var(--fc) var(--f1), transparent var(--f1)),
    var(--groove);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, .35);
}
.fader::-moz-range-track {
  height: 6px; border-radius: 3px;
  background:
    linear-gradient(to right, transparent var(--f0), var(--fc) var(--f0), var(--fc) var(--f1), transparent var(--f1)),
    var(--groove);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, .35);
}
.fader.centered::-webkit-slider-runnable-track {
  background:
    linear-gradient(to right, transparent calc(50% - .5px), var(--ink-3) calc(50% - .5px), var(--ink-3) calc(50% + .5px), transparent calc(50% + .5px)),
    linear-gradient(to right, transparent var(--f0), var(--fc) var(--f0), var(--fc) var(--f1), transparent var(--f1)),
    var(--groove);
}
.fader.centered::-moz-range-track {
  background:
    linear-gradient(to right, transparent calc(50% - .5px), var(--ink-3) calc(50% - .5px), var(--ink-3) calc(50% + .5px), transparent calc(50% + .5px)),
    linear-gradient(to right, transparent var(--f0), var(--fc) var(--f0), var(--fc) var(--f1), transparent var(--f1)),
    var(--groove);
}
.fader::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 13px; height: 20px; margin-top: -7px;
  border-radius: 3px;
  border: 1px solid var(--cap-edge);
  background:
    linear-gradient(to right, transparent 5px, rgba(0, 0, 0, .45) 5px, rgba(0, 0, 0, .45) 6px, transparent 6px),
    linear-gradient(var(--cap-top), var(--cap-bottom));
  box-shadow: 0 1px 2px rgba(0, 0, 0, .4);
}
.fader::-moz-range-thumb {
  width: 11px; height: 18px;
  border-radius: 3px;
  border: 1px solid var(--cap-edge);
  background:
    linear-gradient(to right, transparent 4.5px, rgba(0, 0, 0, .45) 4.5px, rgba(0, 0, 0, .45) 5.5px, transparent 5.5px),
    linear-gradient(var(--cap-top), var(--cap-bottom));
  box-shadow: 0 1px 2px rgba(0, 0, 0, .4);
}
.fader:active::-webkit-slider-thumb { background: linear-gradient(to right, transparent 5px, rgba(0, 0, 0, .55) 5px, rgba(0, 0, 0, .55) 6px, transparent 6px), linear-gradient(var(--cap-bottom), var(--cap-top)); }

/* метка канала P / I / D */
.tag {
  display: inline-grid; place-items: center;
  width: 22px; height: 20px;
  border-radius: 4px;
  font: 600 12px/1 var(--font-ui);
  color: #10181b;
  flex: none;
}
.tag.p { background: var(--ch2); }
.tag.i { background: var(--ch3); }
.tag.d { background: var(--ch4); }
.tag.m { background: var(--ch1); }

/* компактная строка коэффициента: метка, ползунок, значение */
.gain { display: grid; grid-template-columns: 22px minmax(0, 1fr) 74px; gap: 8px; align-items: center; }
.gain .num { width: 74px; }

.loop {
  border: 1px solid var(--rule-dark);
  box-shadow: inset 0 1px 0 var(--rule-light);
  border-radius: 7px;
  padding: 8px 9px 9px;
  display: flex; flex-direction: column; gap: 5px;
  background: color-mix(in srgb, var(--panel-mid) 60%, transparent);
}
.loop-head { display: flex; align-items: center; gap: 8px; }
.loop-name { font-weight: 600; display: flex; align-items: center; gap: 7px; }
.loop-name .dot { width: 9px; height: 9px; border-radius: 2px; }
.loop-units { margin-left: auto; color: var(--ink-3); font-size: 11.5px; white-space: nowrap; }
.loop.off .gain, .loop.off .check { opacity: .45; }

/* переключатель */
.switch { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; user-select: none; }
.switch input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.switch .track {
  position: relative;
  width: 32px; height: 18px; flex: none;
  border-radius: 9px;
  background: var(--groove);
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, .4);
  transition: background .12s ease;
}
.switch .track::after {
  content: '';
  position: absolute; top: 2px; left: 2px;
  width: 14px; height: 14px; border-radius: 50%;
  background: linear-gradient(var(--cap-top), var(--cap-bottom));
  border: 1px solid var(--cap-edge);
  box-sizing: border-box;
  transition: transform .12s ease;
}
.switch input:checked + .track { background: var(--go); }
.switch input:checked + .track::after { transform: translateX(14px); }
.switch input:focus-visible + .track { outline: 2px solid var(--focus); outline-offset: 2px; }
.switch .lbl { color: var(--ink); }

.check { display: flex; align-items: flex-start; gap: 8px; cursor: pointer; user-select: none; color: var(--ink); }
.check input { margin: 2px 0 0; accent-color: var(--go); width: 15px; height: 15px; flex: none; }
.check .sub { display: block; color: var(--ink-3); font-size: 12px; }

.field { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 8px; }
.field.stack { grid-template-columns: minmax(0, 1fr); gap: 5px; }
.field.stack .seg { display: flex; }
.field.stack .seg > button { flex: 1 1 0; padding: 0 4px; }
.field > span { color: var(--ink); }
.select {
  height: 28px; max-width: 100%;
  padding: 0 26px 0 9px;
  border: 1px solid var(--panel-edge);
  border-radius: 5px;
  background:
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23697174' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 8px center,
    linear-gradient(var(--key-top), var(--key-bottom));
  box-shadow: var(--key-shadow);
  -webkit-appearance: none; appearance: none;
  font-size: 12.5px;
}
.row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.row.end { justify-content: flex-end; }
.presets { display: flex; flex-wrap: wrap; gap: 6px; }

/* ---------- всплывающие сообщения и справка ---------- */

.toasts {
  position: fixed; left: 50%; bottom: calc(18px + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
  z-index: 50; pointer-events: none;
}
.toast {
  max-width: min(520px, calc(100vw - 32px));
  padding: 9px 14px;
  border-radius: 7px;
  background: var(--screen-2);
  border: 1px solid var(--screen-grid-2);
  color: var(--screen-ink);
  box-shadow: 0 8px 24px rgba(0, 0, 0, .35);
  font-size: 12.5px;
  animation: toast-in .18s ease-out;
}
.toast.error { border-color: rgba(255, 75, 62, .6); }
@keyframes toast-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.help {
  width: min(700px, calc(100vw - 32px));
  max-height: calc(100vh - 48px);
  padding: 0;
  border: 1px solid var(--panel-edge);
  border-radius: 10px;
  background: var(--panel);
  color: var(--ink);
  box-shadow: 0 20px 60px rgba(0, 0, 0, .45);
}
.help::backdrop { background: rgba(10, 14, 15, .55); }
.help-inner { padding: 18px 22px 20px; overflow-y: auto; max-height: calc(100vh - 50px); }
.help h2 { margin: 0 0 4px; font-size: 18px; font-weight: 600; }
.help h3 { margin: 18px 0 6px; font-size: 14px; font-weight: 600; }
.help p, .help li { color: var(--ink-2); line-height: 1.5; max-width: 72ch; }
.help ul { margin: 0; padding-left: 18px; }
.help li { margin: 3px 0; }
.help .close { position: absolute; top: 12px; right: 12px; }
.kbd {
  display: inline-block; min-width: 22px; padding: 1px 6px;
  border: 1px solid var(--panel-edge); border-bottom-width: 2px;
  border-radius: 4px;
  background: var(--panel-hi);
  font: 500 12px/1.4 var(--font-osd);
  text-align: center; color: var(--ink);
}
.shortcuts { display: grid; grid-template-columns: auto 1fr; gap: 6px 12px; align-items: baseline; color: var(--ink-2); }
.shortcuts .kbd { justify-self: start; }

/* ---------- узкие экраны ---------- */

@media (max-width: 1100px) {
  :root { --sidebar-w: 336px; }
  .brand-sub { display: none; }
}
@media (max-width: 900px) {
  body { overflow: auto; }
  .app { height: auto; min-height: 100%; }
  .main { grid-template-columns: minmax(0, 1fr); }
  .workspace { padding: 10px 0; }
  .scene-screen { flex: none; height: 56vh; min-height: 300px; }
  .plots-screen { height: 62vh !important; min-height: 320px; }
  .splitter { display: none; }
  .sidebar { overflow: visible; padding: 4px 0 32px; }
  .hint { right: 12px; }
}
@media (max-width: 560px) {
  .topbar { padding-block: 8px; gap: 8px; }
  .brand-name { font-size: 14px; }
  .key .label-wide { display: none; }
  .key { padding: 0 10px; }
  .clock { gap: 8px; padding: 0 8px; font-size: 12px; }
  .hud { font-size: 11.5px; padding: 6px 8px; }
  .hint { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}