:root{
  /* ультра-чёрный + тёплая кость + янтарь; синего нет */
  --ink:#000000;
  --ink-2:#080807;
  --bone:#e9e4db;
  --amber:#ffb454;
  --text:#e9e4db;
  --muted:#6e6a63;
  --warn:#ff6b4a;

  --hair:rgba(233,228,219,.07);
  --glass:rgba(18,17,15,.52);
  --glass-line:rgba(233,228,219,.11);
  --glass-hi:rgba(255,255,255,.06);

  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --display:"Martian Mono",var(--mono);
  --plots:30vh;
  --foot:32px;
  --ease:cubic-bezier(.16,1,.3,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{height:100%}
body{
  min-height:100dvh;background:var(--ink);color:var(--text);
  font:400 12px/1.45 var(--mono);
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
  display:flex;flex-direction:column;overflow-x:hidden;
}
a{color:var(--bone);text-decoration:none;border-bottom:1px solid rgba(233,228,219,.3)}
a:hover{color:var(--amber);border-bottom-color:var(--amber)}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;-webkit-tap-highlight-color:transparent}
:focus-visible{outline:1px solid var(--amber);outline-offset:2px}

/* ═══ сцена ═══ */
.stage{
  position:relative;flex:0 0 auto;
  height:calc(100dvh - var(--plots) - var(--foot));
  min-height:360px;
}
#scene{position:absolute;inset:0;width:100%;height:100%;display:block}

.over{position:absolute;z-index:5;pointer-events:none;-webkit-user-select:none;user-select:none}
.over-tl{top:14px;left:16px}
.over-tr{top:14px;right:16px}
.over-bl{left:16px;right:16px;bottom:82px}

.ttl{
  font-family:"Martian Mono",var(--mono);font-weight:800;
  font-size:12.5px;letter-spacing:-.03em;color:var(--text);margin-bottom:12px;
}
.hud{display:grid;grid-template-columns:auto auto auto;gap:2px 8px;font-size:11.5px}
.hud.qual{margin-top:12px;padding-top:10px;border-top:1px solid var(--hair);font-size:10.5px}
.hud.qual .hk{letter-spacing:.02em}
.hk{color:var(--muted);text-align:right}
.hv{color:var(--text);text-align:right;min-width:7ch}
.hu{color:var(--muted);font-size:10px}
.hk.dim,.hv.dim{color:rgba(110,106,99,.65)}

.chips{display:flex;flex-direction:column;align-items:flex-end;gap:6px}
.chip{
  display:flex;align-items:center;gap:6px;
  font-size:9.5px;letter-spacing:.13em;text-transform:uppercase;
  color:var(--muted);opacity:.45;white-space:nowrap;
}
.chip::before{content:"";width:5px;height:5px;border-radius:50%;background:currentColor}
.chip.on{opacity:1;color:var(--bone)}
.chip.on::before{box-shadow:0 0 7px currentColor}
#chip-sat.on,#chip-fail.on{color:var(--warn)}
#chip-catch.on,#chip-enc.on{color:var(--amber)}

.status{font-size:11.5px;color:var(--muted);max-width:64ch}
.status b{color:var(--text);font-weight:500}
.status .bad{color:var(--warn)}
.status .ok{color:var(--amber)}

.touch{
  display:none;position:absolute;top:0;bottom:0;width:32%;z-index:4;
  align-items:center;justify-content:center;color:var(--muted);font-size:24px;
  -webkit-user-select:none;user-select:none;touch-action:none;
}
#touch-l{left:0}
#touch-r{right:0}
.touch.act{background:rgba(233,228,219,.07);color:var(--bone)}

/* ═══ единственное меню: стекло ═══ */
.dock{
  -webkit-user-select:none;user-select:none;
  position:absolute;z-index:20;left:50%;bottom:18px;transform:translateX(-50%);
  width:max-content;max-width:calc(100% - 24px);
  display:flex;flex-direction:column;align-items:stretch;gap:8px;
}
.rail,.sheet{
  position:relative;
  background:var(--glass);
  -webkit-backdrop-filter:blur(20px) saturate(150%);
  backdrop-filter:blur(20px) saturate(150%);
  border:1px solid var(--glass-line);
  border-radius:14px;
  box-shadow:0 18px 44px -22px rgba(0,0,0,.9), 0 0 0 .5px rgba(0,0,0,.4);
}
.rail::before,.sheet::before{
  content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;
  background:linear-gradient(180deg,var(--glass-hi),rgba(255,255,255,0) 46%);
}
@supports not ((backdrop-filter:blur(1px)) or (-webkit-backdrop-filter:blur(1px))){
  .rail,.sheet{background:rgba(10,9,8,.95)}
}

.rail{display:flex;align-items:center;gap:8px;padding:5px;flex-wrap:wrap;justify-content:center}
.rail>*{position:relative;z-index:1}
.sep{width:1px;height:18px;background:var(--glass-line);flex:0 0 auto}

.seg{display:flex;gap:2px;padding:2px;border-radius:10px;background:rgba(0,0,0,.28)}
.seg button{
  display:flex;align-items:center;gap:6px;
  min-height:32px;padding:0 11px;border-radius:8px;
  font-size:11px;font-weight:500;letter-spacing:.04em;color:var(--muted);
  transition:color .15s var(--ease),background .15s var(--ease);
}
.seg button b{font-weight:700;opacity:.45}
.seg button:hover{color:var(--text)}
.seg button.on{background:var(--bone);color:#0a0906;font-weight:700}
.seg button.on b{opacity:.55;color:#0a0906}

.acts{display:flex;gap:2px}
.acts button,.disc{
  min-height:32px;padding:0 10px;border-radius:8px;
  font-size:11px;color:var(--muted);letter-spacing:.02em;
  transition:color .15s var(--ease),background .15s var(--ease);
}
.acts button:hover,.disc:hover{color:var(--text);background:rgba(233,228,219,.07)}
.acts button:active{background:rgba(233,228,219,.16);color:var(--text)}
#a-pause.on{color:var(--amber)}

.disc{display:flex;align-items:center;gap:7px}
.disc .chev{
  width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;
  border-bottom:5px solid currentColor;transition:transform .2s var(--ease);
}
.disc[aria-expanded="true"]{color:var(--text)}
.disc[aria-expanded="true"] .chev{transform:rotate(180deg)}

/* ─── лист параметров ─── */
.sheet{
  display:none;order:-1;padding:16px 18px;
  width:min(1180px,calc(100vw - 24px));
  max-height:min(58vh,470px);overflow:auto;overscroll-behavior:contain;
}
.sheet.open{display:block;animation:rise .2s var(--ease)}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.sheet-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1fr;gap:18px 30px;
}
@media (min-width:780px){ .sheet-grid{grid-template-columns:1fr 1fr} }
@media (min-width:1140px){ .sheet-grid{grid-template-columns:1fr 1fr 1.35fr} }
.col{display:flex;flex-direction:column;gap:10px;min-width:0}
.lbl{
  font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);
  padding-bottom:7px;border-bottom:1px solid var(--hair);
}

.presets,.toggles{display:flex;flex-wrap:wrap;gap:4px}
.presets button,.tg{
  min-height:30px;padding:0 9px;border-radius:7px;font-size:10.5px;color:var(--muted);
  border:1px solid var(--hair);transition:color .15s var(--ease),border-color .15s var(--ease);
}
.presets button:hover,.tg:hover{color:var(--text);border-color:var(--glass-line)}
.presets button.on{background:var(--bone);border-color:var(--bone);color:#0a0906;font-weight:500}
.tg b{color:var(--text);font-weight:500}
.tg.on{border-color:rgba(255,180,84,.5)}
.tg.on b{color:var(--amber)}
.tg[disabled]{opacity:.45;cursor:default}
#a-step{display:none}
body.reduced #a-step{display:inline-block}

.sliders{display:grid;grid-template-columns:1fr 1fr;gap:9px 18px}
.sl{display:grid;grid-template-columns:1fr auto;align-items:center;gap:2px 8px}
.sl .k{font-size:10.5px;color:var(--muted)}
.sl .v{font-size:11px;color:var(--text)}
.sl.mod .k,.sl.mod .v{color:var(--amber)}
.sl input{grid-column:1/3;width:100%}
.sl.off{display:none}

input[type=range]{-webkit-appearance:none;appearance:none;background:transparent;height:16px;cursor:pointer}
input[type=range]::-webkit-slider-runnable-track{height:1px;background:var(--glass-line)}
input[type=range]::-moz-range-track{height:1px;background:var(--glass-line)}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:8px;height:14px;margin-top:-6.5px;border-radius:2px;background:var(--bone);
}
input[type=range]::-moz-range-thumb{width:8px;height:14px;border-radius:2px;border:0;background:var(--bone)}

.note{font-size:10.5px;line-height:1.55;color:var(--muted)}
.note.dim{color:rgba(110,106,99,.72)}
.eq{font:400 10.5px/1.72 var(--mono);color:var(--text);white-space:pre;overflow-x:auto;
  -webkit-user-select:text;user-select:text}

.row-lbl{font-size:10px;color:var(--muted);letter-spacing:.04em;margin-top:2px}
.src-file{float:right;letter-spacing:0;text-transform:none;opacity:.75;font-size:9px}
.seg-flat{background:none;padding:0;gap:3px;flex-wrap:wrap}
.seg-flat button{
  min-height:28px;padding:0 9px;border-radius:7px;border:1px solid var(--hair);
  font-size:10.5px;color:var(--muted);
}
.seg-flat button.on{background:var(--bone);border-color:var(--bone);color:#0a0906;font-weight:500}
.eqbox summary{cursor:pointer;list-style:none;display:block}
.eqbox summary::-webkit-details-marker{display:none}
.eqbox summary::after{content:" +";float:right;opacity:.7}
.eqbox[open] summary::after{content:" −"}
.eqbox .eq{margin-top:10px}

/* ═══ графики ═══ */
.plots{
  flex:0 0 auto;height:var(--plots);min-height:200px;
  display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--hair);
}
.plots figure{position:relative;min-width:0;border-right:1px solid var(--hair)}
.plots figure:last-child{border-right:0}
.plots canvas{position:absolute;inset:0;width:100%;height:100%;display:block;z-index:0}
figcaption{
  position:absolute;z-index:1;top:9px;left:12px;pointer-events:none;
  font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);
}
figcaption i{font-style:normal;letter-spacing:.06em;text-transform:none;color:rgba(110,106,99,.7)}

/* ═══ низ ═══ */
footer{
  flex:0 0 auto;height:var(--foot);
  display:flex;align-items:center;gap:20px;padding:0 16px;
  border-top:1px solid var(--hair);font-size:10.5px;color:var(--muted);
}
.keys{display:flex;gap:14px;flex-wrap:wrap}
kbd{font:400 10px/1 var(--mono);color:var(--text);opacity:.75;margin-right:5px}
.src{margin-left:auto;color:rgba(110,106,99,.8);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* ═══ мобильный ═══ */
@media (max-width:900px){
  :root{--plots:0px;--foot:auto}
  body{padding-bottom:calc(76px + env(safe-area-inset-bottom))}
  .stage{height:46dvh;min-height:260px}

  .over-tl{top:10px;left:12px}
  .over-tr{top:10px;right:12px}
  .over-bl{bottom:10px;left:12px;right:12px}
  .ttl{font-size:11px;margin-bottom:8px}
  .hud{font-size:12px;gap:2px 8px}
  .hud .sec,.hud.qual{display:none}      /* на телефоне только t, θ, x, u */
  .chips{gap:5px}
  .chip{opacity:0;height:0;overflow:hidden}
  .chip.on{opacity:1;height:auto}        /* горят только активные лампы */
  .status{font-size:11.5px}

  .dock{
    position:fixed;left:0;right:0;bottom:0;transform:none;
    width:100%;max-width:100%;gap:0;
  }
  .rail{
    border-radius:0;border-left:0;border-right:0;border-bottom:0;
    padding:6px 8px calc(6px + env(safe-area-inset-bottom));
    box-shadow:0 -14px 34px -18px rgba(0,0,0,.95);
    gap:6px;
  }
  .rail .sep{display:none}
  .seg{flex:1 1 100%;justify-content:space-between}
  .seg button{flex:1;justify-content:center;min-height:44px;font-size:11px}
  .acts{flex:1 1 auto;gap:4px;justify-content:center}
  .acts button{flex:1 1 auto;white-space:nowrap;min-height:44px;border:1px solid var(--hair)}
  .disc{min-height:44px;padding:0 12px;border:1px solid var(--hair)}

  .sheet{
    order:-1;border-radius:14px 14px 0 0;border-bottom:0;
    width:100%;max-height:min(64dvh,540px);padding:14px 14px 18px;
  }
  .sheet-grid{gap:16px}
  .sliders{grid-template-columns:1fr 1fr}

  .plots{height:auto;grid-template-columns:1fr;border-top:0}
  .plots figure{height:32dvh;min-height:190px;border-right:0;border-top:1px solid var(--hair)}

  footer{height:auto;flex-direction:column;align-items:flex-start;gap:6px;padding:10px 12px 14px}
  .keys{display:none}
  .src{margin-left:0;white-space:normal}
}

/* телефон в альбомной: экран низкий, ужимаем всё по высоте */
@media (max-height:520px) and (orientation:landscape){
  .stage{height:62dvh;min-height:200px}
  .plots figure{height:46dvh;min-height:150px}
  .rail{padding:4px 8px calc(4px + env(safe-area-inset-bottom))}
  .rail button{min-height:36px!important}
  .sheet{max-height:70dvh}
  .hud.qual{display:none}
}

@media (max-width:430px){
  .sliders{grid-template-columns:1fr}
  .acts button{font-size:10.5px;padding:0 6px}
}

@media (pointer:coarse){
  body.manual .touch{display:flex}
  .rail button,.presets button,.tg,.seg-flat button{min-height:44px}
  .seg-flat button{flex:1}
}

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