/* =========================================================================
   ПОВЕРКА СРЕДСТВ ИЗМЕРЕНИЙ
   Оформление: лицевая панель лабораторного стенда конца 1970-х.
   Крашеная эмаль, гравированные таблички, галетный переключатель,
   стрелочный индикатор. Бланк лежит в утопленном окне панели.
   Вся «приборность» — в раме; данные остаются плоскими и читаемыми.
   ========================================================================= */

/* ---------- 1. Материалы ---------- */

:root {
  /* гравировка на табличках и шкалах */
  --f-plate: "Bahnschrift", "DIN Condensed", "DIN Alternate", "Oswald",
             "Arial Narrow", sans-serif;
  /* отсчёты, номера, показания */
  --f-read: "Cascadia Mono", Consolas, "SF Mono", "DejaVu Sans Mono", ui-monospace, monospace;
  /* пояснения и подписи строк — гуманистический гротеск, слой «документации» */
  --f-body: Corbel, Candara, Optima, "Gill Sans", "Gill Sans MT", sans-serif;

  --ease: cubic-bezier(.4, 0, .2, 1);
  --click: cubic-bezier(.2, .9, .3, 1.25);

  --shell: min(1360px, 100% - clamp(1rem, 3vw, 3rem));

  --speckle: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='s'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23s)'/%3E%3C/svg%3E");
}

/* — дневной стенд: светло-серая эмаль, кремовый бланк — */
:root[data-mode="day"] {
  --enamel: #8b9484;
  --enamel-hi: #a3ab99;
  --enamel-lo: #666e60;
  --enamel-edge: #4b5146;

  --plate: #e4dfd0;
  --plate-lo: #cec8b6;
  --plate-ink: #22241e;
  --plate-dim: #6c6c60;

  --form: #efebdf;
  --form-ink: #1b1c17;
  --form-dim: #5f5f53;
  --form-rule: #a8a494;
  --form-band: #e2ddcd;

  --field: #fbf9f1;
  --field-on: #fffdf3;
  --field-ink: #16170f;

  --signal: #a92a1e;
  --go: #2b6b34;
  --amber: #9a6a00;
  --rail-ink: #ece7d8;
  --room: #232622;
  --room-hi: rgba(255,255,255,.07);
  --line: #3d423b;
  --speck: .05;
}

/* — ночной стенд: тёмная эмаль, подсвеченное поле индикатора — */
:root[data-mode="night"] {
  --enamel: #3a4038;
  --enamel-hi: #495046;
  --enamel-lo: #2a2e28;
  --enamel-edge: #191c18;

  --plate: #2d312c;
  --plate-lo: #21241f;
  --plate-ink: #d8d3bf;
  --plate-dim: #8b8b7c;

  --form: #12160f;
  --form-ink: #dcd8c4;
  --form-dim: #8d8c7b;
  --form-rule: #333a2f;
  --form-band: #191e15;

  --field: #0b0f09;
  --field-on: #141a10;
  --field-ink: #ffc35a;

  --signal: #e5533d;
  --go: #5fc36a;
  --amber: #ffc35a;
  --rail-ink: #cdc8b6;
  --room: #0d0f0d;
  --room-hi: rgba(255,255,255,.05);
  --line: #c8c3b0;
  --speck: .09;
}

/* ---------- 2. База ---------- */

*, *::before, *::after { box-sizing: border-box; }

/* [hidden] обязан скрывать: авторский display перебивает браузерное правило */
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  font-family: var(--f-body);
  font-size: 1rem;
  line-height: 1.5;
  color: var(--plate-ink);
  background: var(--room);
  transition: background-color .4s var(--ease), color .4s var(--ease);
}
body::before {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background: radial-gradient(130% 80% at 50% -10%, var(--room-hi), transparent 62%);
}
body > * { position: relative; z-index: 1; }

h1, h2, h3, legend { margin: 0; font-weight: 400; line-height: 1.1; }
p { margin: 0; }
a { color: inherit; }
::selection { background: var(--signal); color: #fff; }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 2px; }

/* ---------- 3. Панель ---------- */

.stand {
  flex: 1; width: var(--shell); margin-inline: auto;
  padding-block: clamp(.75rem, 2vw, 1.5rem);
  display: flex; flex-direction: column;
}
.stand > * { margin-block: auto; }   /* панель стоит на столе, а не растянута по нему */

.face {
  position: relative;
  padding: clamp(1.1rem, 2.4vw, 2rem);
  background: linear-gradient(176deg, var(--enamel-hi), var(--enamel) 22%, var(--enamel) 78%, var(--enamel-lo));
  border: 1px solid var(--enamel-edge);
  border-radius: 3px;
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, var(--enamel-hi) 80%, #fff),
    inset 0 -1px 0 var(--enamel-lo),
    0 2px 0 var(--enamel-edge),
    0 0 0 1px rgba(0, 0, 0, .35),
    0 26px 60px -24px rgba(0, 0, 0, .85);
}
/* шагрень эмали */
.face::after {
  content: ""; position: absolute; inset: 0; border-radius: 3px;
  background-image: var(--speckle); opacity: var(--speck);
  mix-blend-mode: overlay; pointer-events: none;
}

/* винты по углам */
.screw {
  position: absolute; width: 11px; height: 11px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, var(--enamel-hi), var(--enamel-lo) 70%, var(--enamel-edge));
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, .35), 0 1px 1px rgba(0, 0, 0, .4);
}
.screw::before {
  content: ""; position: absolute; inset: 3px 2px; border-top: 1px solid var(--enamel-edge);
  transform: rotate(var(--turn, 28deg)); transform-origin: center;
}
.screw--tl { top: 8px; left: 8px; }
.screw--tr { top: 8px; right: 8px; --turn: -14deg; }
.screw--bl { bottom: 8px; left: 8px; --turn: 62deg; }
.screw--br { bottom: 8px; right: 8px; --turn: 8deg; }

/* ---------- 4. Гравированные таблички ---------- */

.plate {
  position: relative;
  padding: .6rem .95rem;
  background: linear-gradient(180deg, var(--plate), var(--plate-lo));
  border: 1px solid var(--enamel-edge);
  border-radius: 2px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .45), 0 1px 2px rgba(0, 0, 0, .35);
}
.plate__main {
  display: block;
  font-family: var(--f-plate); font-size: clamp(1rem, .55rem + 1.1vw, 1.6rem);
  letter-spacing: .07em; text-transform: uppercase; color: var(--plate-ink);
  text-shadow: 0 1px 0 rgba(255, 255, 255, .5);
}
.plate__sub {
  display: block; margin-top: .1rem;
  font-family: var(--f-plate); font-size: .68rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--plate-dim);
}

/* ---------- 5. Шапка стенда ---------- */

.rack {
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
  width: var(--shell); margin-inline: auto; padding-block: .8rem;
}
.rack__mark { display: flex; align-items: center; gap: .6rem; text-decoration: none; }
.rack__mark svg { width: 34px; height: 22px; overflow: visible; }
.rack__mark svg path { fill: none; stroke: #ddd8c8; stroke-width: 1.6; stroke-linecap: square; }
.rack__mark svg .jaw { stroke: var(--signal); }
.rack__name {
  font-family: var(--f-plate); font-size: .82rem; letter-spacing: .16em;
  text-transform: uppercase; color: #ddd8c8;
}

.rack__nav { margin-left: auto; display: flex; gap: .4rem; }
.rack__nav a {
  padding: .3rem .7rem; border: 1px solid transparent; border-radius: 2px;
  font-family: var(--f-plate); font-size: .72rem; letter-spacing: .1em;
  text-transform: uppercase; color: color-mix(in srgb, var(--plate) 65%, transparent);
  text-decoration: none; transition: color .2s var(--ease), border-color .2s var(--ease);
}
.rack__nav a { color: rgba(221, 216, 200, .6); }
.rack__nav a:hover { color: #ddd8c8; }
.rack__nav a.is-on { color: #ddd8c8; border-color: rgba(221, 216, 200, .35); }

/* кто вошёл */
.who-bar { display: flex; align-items: center; gap: .5rem; }
.who-bar form { display: inline; }
.who-bar__name {
  max-width: 12rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  font-family: var(--f-plate); font-size: .72rem; letter-spacing: .08em;
  text-transform: uppercase; color: #ddd8c8;
}
.who-bar__in, .who-bar__out {
  padding: .3rem .7rem; border: 1px solid rgba(221, 216, 200, .3); border-radius: 2px;
  background: none; cursor: pointer; text-decoration: none;
  font-family: var(--f-plate); font-size: .68rem; letter-spacing: .1em;
  text-transform: uppercase; color: rgba(221, 216, 200, .75);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.who-bar__in:hover, .who-bar__out:hover { color: #ddd8c8; border-color: rgba(221, 216, 200, .6); }
.who-bar__in--alt { border-color: transparent; }

/* тумблер режима */
.toggle {
  display: flex; align-items: center; gap: .55rem;
  padding: 0; border: 0; background: none; cursor: pointer;
  font-family: var(--f-plate); font-size: .66rem; letter-spacing: .12em;
  text-transform: uppercase; color: rgba(221, 216, 200, .6);
}
.toggle__body {
  position: relative; width: 20px; height: 34px; border-radius: 3px;
  background: linear-gradient(180deg, var(--enamel-lo), var(--enamel-edge));
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, .6);
}
.toggle__lever {
  position: absolute; left: 50%; width: 9px; height: 15px; border-radius: 4px 4px 2px 2px;
  background: linear-gradient(180deg, #d8d4c6, #8d897c);
  box-shadow: 0 1px 2px rgba(0, 0, 0, .5);
  transform: translateX(-50%); top: 3px;
  transition: top .18s var(--click);
}
:root[data-mode="night"] .toggle__lever { top: 16px; }
.toggle:hover { color: #ddd8c8; }

/* ---------- 6. Утопленное окно с бланком ---------- */

.well {
  position: relative;
  background: var(--form); color: var(--form-ink);
  border-radius: 2px;
  box-shadow:
    inset 0 2px 7px rgba(0, 0, 0, .38),
    0 1px 0 color-mix(in srgb, var(--enamel-hi) 70%, #fff);
  padding: clamp(1.1rem, 2.5vw, 2rem);
}

/* ---------- 7. Стрелочный индикатор ---------- */

.meter { display: flex; align-items: center; gap: .9rem; margin-left: auto; }
.meter__dial {
  width: clamp(122px, 15vw, 168px); height: auto;
  background: linear-gradient(180deg, var(--plate), var(--plate-lo));
  border: 1px solid var(--enamel-edge); border-radius: 2px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .45), 0 1px 2px rgba(0, 0, 0, .35);
}
.meter__arc { fill: none; stroke: var(--plate-ink); stroke-width: 1; }
.meter__tick { stroke: var(--plate-ink); stroke-width: 1; }
.meter__tick--major { stroke-width: 1.6; }
.meter__zone--bad { stroke: var(--signal); stroke-width: 3.5; fill: none; }
.meter__zone--good { stroke: var(--go); stroke-width: 3.5; fill: none; }
.meter__label { font-family: var(--f-plate); font-size: 7px; letter-spacing: .1em; fill: var(--plate-dim); }
.meter__needle {
  stroke: var(--signal); stroke-width: 1.8; stroke-linecap: round;
  transform: rotate(var(--a, -50deg)); transform-origin: 100px 96px;
  transition: transform 1.1s var(--click);
}
.meter__pin { fill: var(--enamel-edge); }

/* окно счётчика */
.counter {
  display: grid; gap: .25rem; padding: .5rem .7rem;
  background: var(--field); border: 1px solid var(--enamel-edge); border-radius: 2px;
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, .45);
}
.counter__n {
  font-family: var(--f-read); font-size: 1.15rem; letter-spacing: .06em;
  color: var(--field-ink); font-variant-numeric: tabular-nums;
}
.counter__cap {
  font-family: var(--f-plate); font-size: .58rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--form-dim);
}

/* ---------- 8. Галетный переключатель этапов ---------- */

.selector { position: relative; margin: clamp(.9rem, 2vw, 1.4rem) 0; }
/* края галетника: видно, что шкала продолжается за обрез */
.selector::before, .selector::after {
  content: ""; position: absolute; top: 1px; bottom: 1px; width: 2.6rem; z-index: 3;
  pointer-events: none; opacity: 0; transition: opacity .25s var(--ease);
}
.selector::before { left: 1px; background: linear-gradient(90deg, var(--enamel-lo) 20%, transparent); }
.selector::after { right: 1px; background: linear-gradient(270deg, var(--enamel-lo) 20%, transparent); }
.selector[data-edge~="start"]::before { opacity: 1; }
.selector[data-edge~="end"]::after { opacity: 1; }
.selector__rail {
  position: relative; display: flex; overflow-x: auto; scrollbar-width: none;
  padding: .5rem .4rem .1rem;
  background: linear-gradient(180deg, var(--enamel-lo), var(--enamel));
  border: 1px solid var(--enamel-edge); border-radius: 2px;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, .35);
}
.selector__rail::-webkit-scrollbar { display: none; }

.pos {
  position: relative; flex: 1 0 auto; min-width: 5.6rem;
  display: grid; justify-items: center; gap: .18rem;
  padding: .3rem .5rem .55rem; border: 0; background: none; cursor: pointer;
  color: color-mix(in srgb, var(--rail-ink) 58%, transparent);
  transition: color .18s var(--ease);
}
.pos:hover { color: color-mix(in srgb, var(--rail-ink) 85%, transparent); }
.pos.is-on { color: var(--rail-ink); }

.pos__notch {
  width: 1px; height: 7px; background: currentColor; opacity: .7;
}
.pos.is-on .pos__notch { background: var(--signal); opacity: 1; width: 2px; }

.pos__n {
  font-family: var(--f-read); font-size: .66rem; letter-spacing: .05em;
}
.pos__t {
  font-family: var(--f-plate); font-size: .76rem; letter-spacing: .05em;
  text-transform: uppercase; white-space: nowrap;
}
.pos.is-on .pos__t { text-shadow: 0 0 8px color-mix(in srgb, var(--rail-ink) 35%, transparent); }

/* лампа готовности этапа */
.pos__lamp {
  position: absolute; top: .22rem; right: .5rem;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--enamel-edge);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, .6);
  transition: background-color .3s var(--ease), box-shadow .3s var(--ease);
}
.pos__lamp[data-state="part"] { background: var(--amber); box-shadow: 0 0 5px var(--amber); }
.pos__lamp[data-state="full"] { background: var(--go); box-shadow: 0 0 5px var(--go); }

/* риска установленного положения */
.selector__index {
  position: absolute; bottom: -1px; height: 3px;
  width: var(--w, 0px); transform: translateX(var(--x, 0px));
  background: var(--signal); pointer-events: none;
  transition: transform .3s var(--click), width .3s var(--click);
}

/* предложение восстановить черновик — форма при этом остаётся пустой */
.draft {
  display: flex; align-items: center; gap: .8rem; flex-wrap: wrap;
  margin-bottom: 1.2rem; padding: .55rem .8rem;
  background: var(--form-band); border-left: 3px solid var(--amber);
}
.draft__t { font-size: .88rem; color: var(--form-dim); }
.draft__t b { font-family: var(--f-read); font-weight: 400; color: var(--form-ink); }
.draft__acts { margin-left: auto; display: flex; gap: .5rem; }
.draft--sent { border-left-color: var(--go); }
.draft button {
  padding: .25rem .7rem; border: 1px solid var(--form-rule); border-radius: 2px;
  background: none; color: var(--form-dim); cursor: pointer;
  font-family: var(--f-plate); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.draft button:hover { color: var(--form-ink); border-color: var(--form-ink); }

/* ---------- 9. Бланк ---------- */

.sheet__step {
  display: flex; align-items: baseline; gap: .7rem; flex-wrap: wrap;
  padding-bottom: .5rem; border-bottom: 1px solid var(--form-rule);
}
.sheet__no {
  font-family: var(--f-read); font-size: .74rem; letter-spacing: .08em; color: var(--signal);
}
.sheet__title { font-family: var(--f-plate); font-size: 1.35rem; letter-spacing: .02em; text-transform: uppercase; }
.sheet__lead { margin-top: .8rem; max-width: 74ch; color: var(--form-dim); font-size: .95rem; }

.card { display: none; }
.card.is-on { display: block; }

.help-btn {
  margin-top: .9rem; padding: .28rem .7rem;
  border: 1px solid var(--form-rule); border-radius: 2px; background: none;
  color: var(--form-dim); cursor: pointer;
  font-family: var(--f-plate); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.help-btn:hover { color: var(--form-ink); border-color: var(--form-ink); }

.note {
  margin-top: 1rem; padding: .9rem 1.1rem; max-width: 76ch;
  background: var(--form-band); border-left: 3px solid var(--amber);
}
.note ul { margin: 0; padding-left: 1.1rem; display: grid; gap: .4rem; }
.note li { color: var(--form-dim); font-size: .92rem; }
.note__ref { margin-top: .8rem; font-size: .82rem; color: var(--form-dim); }
.note__ref a { color: var(--amber); }

/* ---------- 10. Таблицы ---------- */

.tbl { margin: 1.6rem 0 0; }
.tbl__cap {
  display: flex; align-items: baseline; gap: .6rem; flex-wrap: wrap; margin-bottom: .5rem;
}
.tbl__cap b {
  font-family: var(--f-read); font-size: .7rem; letter-spacing: .06em;
  color: var(--signal); font-weight: 400;
}
.tbl__cap span { font-size: .95rem; color: var(--form-ink); }

.tbl__scroll { overflow-x: auto; border: 1px solid var(--form-ink); }

table { width: 100%; border-collapse: collapse; table-layout: fixed; min-width: 46rem; }

thead th {
  padding: .5rem .5rem; border: 1px solid var(--form-rule);
  background: var(--form-band); color: var(--form-dim);
  font-family: var(--f-body); font-size: .78rem; font-weight: 400;
  line-height: 1.25; text-align: center; vertical-align: middle;
}
tbody th, tbody td { border: 1px solid var(--form-rule); vertical-align: middle; }

.c-label {
  padding: .45rem .55rem; text-align: left; font-weight: 400;
  background: var(--form-band); font-size: .88rem; line-height: 1.3; color: var(--form-ink);
}
.c-static {
  padding: .45rem .35rem; text-align: center; background: var(--form-band);
  font-family: var(--f-read); font-size: .8rem; color: var(--form-dim);
}

.c-in { position: relative; padding: 0; }
.c-in:has(.c-formula) { padding: .4rem .35rem; background: var(--form-band); }
.c-formula {
  display: block; margin-bottom: .28rem; text-align: center;
  font-family: var(--f-read); font-size: .72rem; color: var(--form-dim);
}
.c-in:has(.c-formula) input { border: 1px solid var(--form-rule); }

.c-in input, .pick select {
  width: 100%; padding: .5rem .45rem; border: 0; border-radius: 0;
  background: var(--field); color: var(--field-ink);
  font-family: var(--f-body); font-size: .9rem; text-align: center;
  transition: background-color .15s var(--ease), box-shadow .15s var(--ease);
}
.c-in input.is-num { font-family: var(--f-read); font-variant-numeric: tabular-nums; }
.c-in input:hover, .pick select:hover { background: var(--field-on); }
.c-in input:focus, .pick select:focus {
  outline: 0; background: var(--field-on); box-shadow: inset 0 0 0 2px var(--amber);
}

/* код поля исходной программы */
.c-in::before {
  content: attr(data-code); position: absolute; top: 1px; left: 3px; z-index: 1;
  font-family: var(--f-read); font-size: .55rem; color: var(--form-dim);
  opacity: 0; pointer-events: none; transition: opacity .15s var(--ease);
}
.c-in:hover::before, .c-in:focus-within::before { opacity: .7; }

.pick { position: relative; }
.pick::after {
  content: ""; position: absolute; right: .5rem; top: 50%; width: 5px; height: 5px;
  border-right: 1px solid var(--form-dim); border-bottom: 1px solid var(--form-dim);
  transform: translateY(-70%) rotate(45deg); pointer-events: none;
}
.pick select { appearance: none; cursor: pointer; padding-right: 1.4rem; }

/* ---------- 11. Сведения и вывод ---------- */

.ident { display: grid; gap: 1.2rem 2rem; grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr)); max-width: 58rem; margin-top: 1.4rem; }
.fld { display: grid; gap: .25rem; }
.fld__cap {
  font-family: var(--f-plate); font-size: .66rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--form-dim);
}
.fld input, .fld textarea {
  width: 100%; padding: .5rem .55rem;
  border: 1px solid var(--form-rule); border-radius: 0;
  background: var(--field); color: var(--field-ink);
  font-family: var(--f-body); font-size: .95rem;
}
.fld input::placeholder, .fld textarea::placeholder { color: var(--form-dim); opacity: .65; }
.fld input:focus, .fld textarea:focus { outline: 0; box-shadow: inset 0 0 0 2px var(--amber); }

.crew { grid-column: 1 / -1; border: 0; margin: 0; padding: 0; display: grid; gap: .6rem; }
.crew legend {
  padding: 0; font-family: var(--f-plate); font-size: .66rem;
  letter-spacing: .12em; text-transform: uppercase; color: var(--form-dim);
}
.fld--crew { grid-template-columns: 1.6rem 1fr; align-items: center; gap: .5rem; max-width: 30rem; }
.fld__n { font-family: var(--f-read); font-size: .8rem; color: var(--form-dim); }

.verdict { display: grid; gap: 1.6rem; grid-template-columns: minmax(0, 1fr) auto; align-items: start; margin-top: 1.4rem; }
.fld--memo textarea { min-height: 15rem; resize: vertical; line-height: 1.6; }

/* оттиск на бланке */
.stamp { display: grid; place-items: center; padding-top: 1.6rem; }
.stamp__ring {
  display: grid; place-items: center; gap: .15rem;
  width: 10.5rem; height: 10.5rem; border: 3px double var(--signal); border-radius: 50%;
  color: var(--signal); text-align: center;
  opacity: 0; transform: rotate(-26deg) scale(1.35);
  transition: opacity .35s var(--ease), transform .5s var(--click);
}
.stamp.is-on .stamp__ring { opacity: .85; transform: rotate(-9deg) scale(1); }
.stamp__word { font-family: var(--f-plate); font-size: 1.4rem; letter-spacing: .1em; text-transform: uppercase; }
.stamp__sub { font-family: var(--f-read); font-size: .58rem; letter-spacing: .06em; }

/* ---------- 12. Клавиши ---------- */

.keys {
  display: flex; align-items: center; gap: .8rem; flex-wrap: wrap;
  margin-top: 1.6rem; padding-top: 1rem; border-top: 1px solid var(--form-rule);
}
.keys__state { font-family: var(--f-read); font-size: .74rem; color: var(--form-dim); min-height: 1.2em; }
.keys__set { margin-left: auto; display: flex; gap: .7rem; flex-wrap: wrap; }

.key {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .6rem 1.2rem; border: 1px solid var(--enamel-edge); border-radius: 2px;
  cursor: pointer; text-decoration: none;
  font-family: var(--f-plate); font-size: .78rem; letter-spacing: .1em; text-transform: uppercase;
  background: linear-gradient(180deg, var(--enamel-hi), var(--enamel-lo));
  color: var(--plate);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .3), 0 2px 0 var(--enamel-edge);
  transition: transform .07s linear, box-shadow .07s linear;
}
.key:active { transform: translateY(2px); box-shadow: inset 0 1px 3px rgba(0, 0, 0, .5); }
.key--go {
  background: linear-gradient(180deg, color-mix(in srgb, var(--signal) 78%, #fff 22%), var(--signal));
  color: #fff; border-color: color-mix(in srgb, var(--signal) 50%, #000);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .35), 0 2px 0 color-mix(in srgb, var(--signal) 50%, #000);
}
.key--go:active { box-shadow: inset 0 1px 3px rgba(0, 0, 0, .45); }

.walk { display: flex; gap: .7rem; margin-top: 1.4rem; }
.walk button {
  padding: .45rem .95rem; border: 1px solid var(--form-rule); border-radius: 2px;
  background: var(--form-band); color: var(--form-dim); cursor: pointer;
  font-family: var(--f-plate); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.walk button:hover:not(:disabled) { color: var(--form-ink); border-color: var(--form-ink); }
.walk button:disabled { opacity: .35; cursor: default; }
.walk button:last-child { margin-left: auto; }

/* ---------- 13. Главная: два модуля в стойке ---------- */

.bays { display: grid; gap: clamp(.75rem, 1.6vw, 1.1rem); grid-template-columns: repeat(auto-fit, minmax(min(100%, 25rem), 1fr)); }

.bay {
  display: grid; gap: 1rem; align-content: start;
  padding: clamp(1.1rem, 2.2vw, 1.7rem);
  text-decoration: none; color: inherit;
  background: linear-gradient(176deg, var(--enamel-hi), var(--enamel) 30%, var(--enamel-lo));
  border: 1px solid var(--enamel-edge); border-radius: 3px;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, .3),
    inset 0 0 0 1px rgba(0, 0, 0, .12),
    0 2px 0 var(--enamel-edge), 0 10px 22px -14px rgba(0, 0, 0, .8);
  transition: box-shadow .2s var(--ease), transform .12s linear;
}
.bay:hover { box-shadow: inset 0 1px 0 rgba(255, 255, 255, .45), 0 2px 0 var(--enamel-edge), 0 0 0 2px var(--amber); }
.bay:active { transform: translateY(1px); }

.bay__art { display: block; width: 100%; height: auto; max-height: 140px; }
.bay__art path { fill: none; stroke: var(--line); stroke-width: 1.7; stroke-linejoin: round; stroke-linecap: square; opacity: .85; }
.bay__art .accent { stroke: var(--signal); }

.bay__strip { display: flex; align-items: center; gap: .7rem; }
.bay__readout {
  margin-left: auto; padding: .35rem .6rem; text-align: right;
  background: var(--field); border: 1px solid var(--enamel-edge); border-radius: 2px;
  box-shadow: inset 0 2px 5px rgba(0, 0, 0, .45);
  font-family: var(--f-read); font-size: .82rem; color: var(--field-ink);
  font-variant-numeric: tabular-nums; white-space: nowrap;
}
.bay__note {
  padding: .5rem .7rem; border-left: 3px solid var(--amber);
  background: color-mix(in srgb, var(--plate) 55%, transparent);
  font-family: var(--f-body); font-size: .84rem; color: var(--plate-ink); line-height: 1.45;
}
.bay__note--sent { border-left-color: var(--go); }
.bay__note b { font-weight: 400; }
.bay__note span { margin-left: .35rem; }
.bay__grade { font-family: var(--f-read); font-size: 1rem; color: var(--signal); }

.bay__meta {
  display: flex; gap: 1.1rem; flex-wrap: wrap;
  font-family: var(--f-read); font-size: .72rem; color: var(--line); opacity: .8;
}

/* ---------- 14. Текстовые страницы ---------- */

.doc { max-width: 74ch; display: grid; gap: 1rem; }
.doc h1 { font-family: var(--f-plate); font-size: 1.9rem; text-transform: uppercase; letter-spacing: .03em; }
.doc h2 { font-family: var(--f-plate); font-size: 1.15rem; text-transform: uppercase; letter-spacing: .03em; margin-top: 1rem; }
.doc p, .doc li { color: var(--form-dim); }
.doc b { color: var(--form-ink); }
.doc ul { margin: 0; padding-left: 1.1rem; display: grid; gap: .55rem; }

.spec { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 10rem), 1fr)); border-top: 1px solid var(--form-rule); border-left: 1px solid var(--form-rule); margin-top: .6rem; }
.spec > div { padding: .7rem .8rem; border-right: 1px solid var(--form-rule); border-bottom: 1px solid var(--form-rule); display: grid; gap: .2rem; }
.spec dt { font-family: var(--f-plate); font-size: .6rem; letter-spacing: .12em; text-transform: uppercase; color: var(--form-dim); }
.spec dd { margin: 0; font-family: var(--f-read); font-size: .88rem; color: var(--form-ink); }

.foot {
  display: flex; gap: 1rem; flex-wrap: wrap; align-items: center;
  width: var(--shell); margin-inline: auto; padding-block: 1rem;
  font-family: var(--f-plate); font-size: .64rem; letter-spacing: .1em;
  text-transform: uppercase; color: rgba(221, 216, 200, .38);
}
.foot span:last-child { margin-left: auto; }

/* ---------- 15. Сдача работы ---------- */

.receipt {
  display: flex; align-items: center; gap: .9rem;
  margin-top: 1.4rem; padding: .8rem 1rem;
  background: var(--form-band); border-left: 3px solid var(--go);
}
.receipt__mark {
  display: grid; place-items: center; width: 26px; height: 26px; flex: none;
  border-radius: 50%; background: var(--go); color: #fff; font-size: .85rem;
}
.receipt__t { font-size: .95rem; color: var(--form-ink); }
.receipt__n { font-size: .85rem; color: var(--form-dim); }
.receipt__n b { font-family: var(--f-read); color: var(--form-ink); }
.receipt--over { border-left-color: var(--signal); }
.receipt--over .receipt__mark { background: var(--signal); }

/* ---------- 16. Кабинет преподавателя ---------- */

.face--narrow { max-width: 40rem; margin-inline: auto; }

.warn { margin-top: .5rem; color: var(--signal); font-size: .9rem; }
.empty { color: var(--form-dim); font-size: .92rem; }
code {
  font-family: var(--f-read); font-size: .85em;
  background: var(--form-band); padding: .1em .35em;
}

.filters { display: flex; gap: 1rem; align-items: flex-end; flex-wrap: wrap; }
.filters .fld { min-width: 11rem; }
.filters select, .filters input {
  padding: .5rem .55rem; border: 1px solid var(--form-rule);
  background: var(--field); color: var(--field-ink);
  font-family: var(--f-body); font-size: .95rem;
}

table.journal { min-width: 54rem; }
table.journal tbody tr { cursor: pointer; transition: background-color .12s var(--ease); }
table.journal tbody tr:hover { background: var(--form-band); }
table.journal td { padding: .5rem .55rem; font-size: .9rem; }
table.journal .who { color: var(--form-dim); font-size: .86rem; }
.grade-cell { font-family: var(--f-read); font-size: 1.05rem; font-weight: 400; }

.tag {
  display: inline-block; padding: .1rem .5rem; border-radius: 2px;
  font-family: var(--f-plate); font-size: .64rem; letter-spacing: .08em; text-transform: uppercase;
}
.tag--ok { background: color-mix(in srgb, var(--go) 22%, transparent); color: var(--go); }
.tag--bad { background: color-mix(in srgb, var(--signal) 22%, transparent); color: var(--signal); }
.tag--wait { background: color-mix(in srgb, var(--amber) 22%, transparent); color: var(--amber); }

.workbar {
  display: flex; align-items: center; gap: 1rem; flex-wrap: wrap;
  padding-bottom: 1rem; margin-bottom: 1.2rem; border-bottom: 1px solid var(--form-rule);
}
.workbar__who { color: var(--form-dim); font-size: .92rem; }
.workbar__acts { margin-left: auto; display: flex; gap: .6rem; flex-wrap: wrap; align-items: center; }

.counter__n.grade { font-size: 1.9rem; line-height: 1; }

.review { margin-top: 1.4rem; }
.review__h {
  margin-top: 1.8rem; margin-bottom: .6rem;
  font-family: var(--f-plate); font-size: .8rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--form-dim);
  padding-bottom: .35rem; border-bottom: 1px solid var(--form-rule);
}
.review__lead { font-size: 1.02rem; max-width: 74ch; }
.review__sig {
  margin-top: 2rem; padding-top: .7rem; border-top: 1px solid var(--form-rule);
  font-family: var(--f-read); font-size: .72rem; color: var(--form-dim);
}

.verdictbox {
  display: flex; align-items: center; gap: 1.2rem; margin-top: 1rem;
  padding: 1rem 1.2rem; background: var(--form-band);
}
.verdictbox__g {
  font-family: var(--f-read); font-size: 3rem; line-height: 1; color: var(--signal); flex: none;
}
.verdictbox p { color: var(--form-dim); font-size: .95rem; }

.remarks, .plain, .questions { margin: 0; padding: 0; display: grid; gap: .7rem; }
.remarks { list-style: none; }
.plain, .questions { padding-left: 1.2rem; }
.plain li, .questions li { color: var(--form-dim); }

.remark { padding: .7rem .9rem; background: var(--form-band); border-left: 3px solid var(--form-rule); }
.remark--bad { border-left-color: var(--signal); }
.remark--warn { border-left-color: var(--amber); }
.remark--note { border-left-color: var(--form-rule); }
.remark__sev {
  font-family: var(--f-plate); font-size: .62rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--form-dim); margin-right: .6rem;
}
.remark__where { font-family: var(--f-read); font-size: .78rem; color: var(--form-ink); }
.remark p { margin-top: .3rem; font-size: .93rem; color: var(--form-dim); }

.sheets { margin-top: 2rem; }
.sheets summary {
  cursor: pointer; font-family: var(--f-plate); font-size: .74rem;
  letter-spacing: .12em; text-transform: uppercase; color: var(--form-dim);
}
.sheetblock { margin-top: 1.4rem; }
.sheetblock h3 { font-family: var(--f-body); font-size: .95rem; color: var(--form-ink); }
.sheetblock dl {
  margin: .5rem 0 0; display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 17rem), 1fr));
  border-top: 1px solid var(--form-rule); border-left: 1px solid var(--form-rule);
}
.sheetblock dl > div {
  display: flex; gap: .6rem; padding: .35rem .55rem;
  border-right: 1px solid var(--form-rule); border-bottom: 1px solid var(--form-rule);
}
.sheetblock dt { flex: 1; font-size: .82rem; color: var(--form-dim); }
.sheetblock dd { margin: 0; font-family: var(--f-read); font-size: .84rem; color: var(--form-ink); }
.memo { margin-top: .5rem; white-space: pre-wrap; font-size: .93rem; color: var(--form-dim); }

/* ---------- 16б. Журнал: состояние работ ---------- */

.hintline { margin-top: .6rem; font-size: .84rem; color: var(--form-dim); }

.fld--check { flex-direction: row; align-items: center; gap: .45rem; padding-bottom: .5rem; }
.fld--check span { font-size: .9rem; color: var(--form-dim); }

table.journal tr.row--new td { background: color-mix(in srgb, var(--amber) 8%, transparent); }
.dot-new {
  display: inline-block; width: 6px; height: 6px; border-radius: 50%;
  background: var(--amber); margin-right: .4rem; vertical-align: middle;
  box-shadow: 0 0 4px var(--amber);
}
.grade-cell--final { color: var(--form-ink); }
.grade-cell--hint { font-family: var(--f-read); font-size: .95rem; color: var(--form-dim); }

.cell--none { color: var(--form-dim); opacity: .5; }
.cell--sent { color: var(--amber); }
.cell--done { color: var(--go); }

.mini {
  padding: .2rem .55rem; border: 1px solid var(--form-rule); border-radius: 2px;
  background: none; color: var(--form-dim); cursor: pointer;
  font-family: var(--f-plate); font-size: .62rem; letter-spacing: .08em; text-transform: uppercase;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.mini:hover { color: var(--form-ink); border-color: var(--form-ink); }

/* значок подозрения на списывание */
.warn-mark {
  display: inline-grid; place-items: center; width: 15px; height: 15px;
  border-radius: 50%; background: var(--signal); color: #fff;
  font-family: var(--f-plate); font-size: .62rem; margin-right: .35rem;
  vertical-align: middle; cursor: help;
}
table.journal tr.row--susp td { background: color-mix(in srgb, var(--signal) 9%, transparent); }

/* ---------- 17. Адаптив и печать ---------- */

@media (max-width: 56rem) {
  .rack__nav { order: 3; width: 100%; margin-left: 0; }
  .verdict { grid-template-columns: 1fr; }
  .stamp { justify-self: center; padding-top: 0; }
  .head-row { flex-direction: column; align-items: stretch; }
  .meter { margin-left: 0; }
}

@media print {
  .rack, .selector, .keys, .walk, .help-btn, .foot, .screw, .meter { display: none !important; }
  .card { display: block !important; }
  .face, .well { box-shadow: none; background: #fff; padding: 0; }
  body { background: #fff; color: #000; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important; transition-duration: .01ms !important;
  }
}