:root {
  --bg: #f3f4f1;
  --card: #ffffff;
  --ink: #1d2320;
  --muted: #5d6762;
  --line: #d5d9d4;
  --brand: #1f4e3d;
  --brand-ink: #ffffff;
  --pass: #1e7a46;
  --pass-bg: #e3f3e8;
  --fail: #b3261e;
  --fail-bg: #fbe7e5;
  --warn: #9a6200;
  --warn-bg: #fff2d6;
  --gray: #5f6b66;
  --gray-bg: #eceeec;
  --focus: #2f6fd6;
  --radius: 12px;
  --tap: 52px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-tap-highlight-color: transparent;
}
button, input, select, textarea { font: inherit; color: inherit; }
.loading { padding: 40px; text-align: center; color: var(--muted); }

/* bilingual labels: English first, Russian second */
.bi { display: inline-flex; flex-direction: column; line-height: 1.15; }
.bi .ru { font-size: .82em; color: var(--muted); }
.btn .bi .ru, .badge .bi .ru, nav .bi .ru { color: inherit; opacity: .8; }
.bi.inline { flex-direction: row; gap: .4em; align-items: baseline; }
.bi.inline .ru::before { content: "/ "; }

/* top bar + tabs stick together, whatever the header height */
.sticky { position: sticky; top: 0; z-index: 20; }
.top {
  background: var(--brand); color: var(--brand-ink);
  display: flex; align-items: center; gap: 12px; padding: 8px 16px;
  padding-top: max(8px, env(safe-area-inset-top));
}
.top h1 { font-size: 20px; margin: 0; flex: 1; white-space: nowrap; }
.top .who { text-align: right; font-size: 15px; }
.top .who small { display: block; opacity: .8; }
.top .btn { background: rgba(255,255,255,.14); color: #fff; border-color: rgba(255,255,255,.35); min-height: 48px; }
nav.tabs {
  display: flex; gap: 4px; overflow-x: auto; background: #fff; border-bottom: 1px solid var(--line); padding: 6px 10px;
  scrollbar-width: none;
}
nav.tabs a {
  flex: 0 0 auto; min-height: 48px; padding: 6px 14px; border-radius: 10px; text-decoration: none; color: var(--ink);
  display: flex; align-items: center;
}
nav.tabs a.on { background: var(--brand); color: #fff; }

main { max-width: 1100px; margin: 0 auto; padding: 16px 16px 120px; }
h2 { font-size: 24px; margin: 8px 0 14px; }
h3 { font-size: 19px; margin: 0 0 10px; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin-bottom: 14px; }
.card.sec { scroll-margin-top: 140px; }
.badge.void { background: var(--gray-bg); color: var(--gray); text-decoration: line-through; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 14px; }
.row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.row.end { justify-content: flex-end; }
.spacer { flex: 1; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.note { font-size: 14px; color: var(--muted); margin: 0 0 12px; }
.note .ru { display: block; }

/* buttons */
.btn {
  min-height: var(--tap); min-width: var(--tap); padding: 6px 18px; border-radius: 10px;
  border: 1.5px solid var(--line); background: #fff; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  text-decoration: none; touch-action: manipulation;
}
.btn:active { transform: translateY(1px); }
.btn:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn.big { min-height: 64px; font-size: 19px; padding: 8px 24px; }
.btn.pass { border-color: var(--pass); color: var(--pass); }
.btn.fail { border-color: var(--fail); color: var(--fail); }
.btn.warn { border-color: var(--warn); color: var(--warn); }
.btn.gray { border-color: var(--gray); color: var(--gray); }
.btn.pass.sel { background: var(--pass); color: #fff; }
.btn.fail.sel { background: var(--fail); color: #fff; }
.btn.warn.sel { background: var(--warn); color: #fff; }
.btn.gray.sel { background: var(--gray); color: #fff; }
.btn.link { border: 0; background: none; color: var(--focus); min-height: 48px; min-width: 48px; padding: 4px 8px; }
.btn[disabled] { opacity: .45; cursor: not-allowed; }

.tbl td b { white-space: nowrap; }
.badge { white-space: nowrap; display: inline-flex; align-items: center; padding: 4px 10px; border-radius: 999px; font-weight: 600; font-size: 14px; background: var(--gray-bg); color: var(--gray); }
.badge.pass, .badge.ok, .badge.reviewed { background: var(--pass-bg); color: var(--pass); }
.badge.fail, .badge.not_ok, .badge.high, .badge.overdue { background: var(--fail-bg); color: var(--fail); }
.badge.warn, .badge.drying, .badge.awaiting_review, .badge.in_progress { background: var(--warn-bg); color: var(--warn); }

/* forms */
label.f { display: block; margin-bottom: 12px; }
label.f > .lbl { display: block; font-weight: 600; margin-bottom: 4px; }
input[type=text], input[type=number], input[type=date], input:not([type]), select, textarea {
  width: 100%; min-height: var(--tap); padding: 10px 12px; border: 1.5px solid var(--line); border-radius: 10px; background: #fff;
}
textarea { min-height: 96px; resize: vertical; }
input.narrow { max-width: 180px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { min-height: 48px; padding: 6px 16px; border-radius: 999px; border: 1.5px solid var(--line); background: #fff; cursor: pointer; }
.chip.on { background: var(--brand); color: #fff; border-color: var(--brand); }
.seg { display: flex; flex-wrap: wrap; gap: 8px; }

/* field rows */
.field { display: grid; grid-template-columns: minmax(150px, 220px) 1fr auto; gap: 10px; align-items: center; padding: 10px 0; border-top: 1px solid var(--line); }
.field:first-of-type { border-top: 0; }
.field .val { font-weight: 600; }
.field .val .muted { font-weight: 400; }
.field .edit { display: flex; gap: 8px; align-items: center; }
@media (max-width: 700px) { .field { grid-template-columns: 1fr; } }

/* check items */
.item { border: 1.5px solid var(--line); border-radius: var(--radius); padding: 14px; margin-bottom: 12px; background: #fff; }
.item.closed { border-color: #b7d9c3; background: #fbfefc; }
.item.open-fail { border-color: #e6aaa5; }
.item .head { display: grid; grid-template-columns: 200px 1fr; gap: 12px; }
.item .equip { font-weight: 700; }
.item .obs .ru { display: block; color: var(--muted); font-size: .9em; margin-top: 2px; }
.item .acts { margin-top: 12px; display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }
.item .state { margin-top: 10px; display: flex; flex-direction: column; gap: 6px; }
.item .state .line { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
@media (max-width: 700px) { .item .head { grid-template-columns: 1fr; } }

.stamp { color: var(--muted); font-size: 14px; }
.blockers { background: var(--warn-bg); border-radius: 10px; padding: 10px 14px; margin: 10px 0; font-size: 15px; }
.blockers ul { margin: 6px 0 0; padding-left: 20px; }
.okline { background: var(--pass-bg); color: var(--pass); border-radius: 10px; padding: 12px 14px; font-weight: 600; }
.badline { background: var(--fail-bg); color: var(--fail); border-radius: 10px; padding: 12px 14px; font-weight: 600; }

.steps { display: flex; gap: 8px; overflow-x: auto; margin-bottom: 14px; }
.steps a { flex: 0 0 auto; min-height: 48px; padding: 6px 14px; border-radius: 10px; background: #fff; border: 1.5px solid var(--line); text-decoration: none; color: var(--ink); display: flex; align-items: center; gap: 8px; }
.steps a.done { border-color: var(--pass); }
.steps a .n { width: 26px; height: 26px; border-radius: 50%; background: var(--gray-bg); display: inline-flex; align-items: center; justify-content: center; font-weight: 700; font-size: 14px; }
.steps a.done .n { background: var(--pass); color: #fff; }

/* tables */
.tbl { width: 100%; border-collapse: collapse; font-size: 15px; }
.tbl th, .tbl td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
.tbl th { font-size: 13px; color: var(--muted); font-weight: 600; }
.tbl tr.click { cursor: pointer; }
.tbl tr.click:hover td { background: #f7f8f6; }
.scroll-x { overflow-x: auto; }
.log td { font-size: 13px; word-break: break-word; }
.log .old { color: var(--fail); }
.log .new { color: var(--pass); }

/* status banner */
.banner {
  position: fixed; left: 50%; transform: translateX(-50%); bottom: 20px; z-index: 50; max-width: min(680px, calc(100% - 32px));
  padding: 14px 18px; border-radius: 12px; box-shadow: 0 8px 30px rgba(0,0,0,.18); font-weight: 600; display: flex; gap: 12px; align-items: center;
}
.banner.err { background: var(--fail); color: #fff; }
.banner.ok { background: var(--pass); color: #fff; }
.banner .bi .ru { color: inherit; opacity: .9; }
.banner button { background: rgba(255,255,255,.2); color: #fff; border: 0; border-radius: 8px; min-height: 48px; min-width: 48px; padding: 4px 12px; }
details > summary { min-height: 48px; display: flex; align-items: center; }
nav.tabs::after { content: ""; flex: 0 0 8px; } /* room to see the last tab is scrollable */

/* modal */
.modal-bg { position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 40; display: flex; align-items: flex-start; justify-content: center; padding: 40px 16px; overflow-y: auto; }
.modal { background: #fff; border-radius: 14px; width: min(640px, 100%); padding: 20px; }
.modal h3 { margin-bottom: 14px; }
.modal .err { background: var(--fail-bg); color: var(--fail); border-radius: 10px; padding: 10px 12px; margin-bottom: 12px; font-weight: 600; }
.modal .err .ru { color: var(--fail); }

/* login */
.login { max-width: 760px; margin: 30px auto; padding: 0 16px; }
.login h1 { font-size: 28px; }
.users { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 12px; }
.users .btn { min-height: 76px; font-size: 19px; }
.pin { max-width: 360px; margin: 16px auto; text-align: center; }
.pin .dots { font-size: 34px; letter-spacing: 12px; min-height: 52px; }
.pad { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.pad .btn { min-height: 70px; font-size: 26px; }

.big-actions { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; margin-bottom: 14px; }
.zone-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; align-items: center; }
.zone-grid .z { font-weight: 600; }
.instr { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.instr p { margin: 0 0 12px; }
@media (max-width: 800px) { .instr { grid-template-columns: 1fr; } }
.demo-flag { background: #fff2d6; color: #7a4d00; text-align: center; font-size: 14px; padding: 6px; }
@media print { .top, nav.tabs, .btn { display: none !important; } }