:root {
  --bg: #f4f6f9;
  --card: #ffffff;
  --text: #111827;
  --muted: #5b6474;
  --line: #d6dbe3;
  --accent: #1d4ed8;
  --accent-text: #ffffff;
  --ok-bg: #e8f5ec;
  --ok: #166534;
  --warn-bg: #fff4d6;
  --warn: #8a5a00;
  --bad-bg: #fde8e8;
  --bad: #b42318;
  --radius: 12px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1419;
    --card: #1a2129;
    --text: #e8edf3;
    --muted: #9aa5b4;
    --line: #2e3844;
    --accent: #3b82f6;
    --ok-bg: #12301f;
    --ok: #6ee79a;
    --warn-bg: #3a2e0c;
    --warn: #f5c451;
    --bad-bg: #3d1717;
    --bad: #ff8a80;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  padding-bottom: env(safe-area-inset-bottom, 0px);
}
main { max-width: 900px; margin: 0 auto; padding: 12px 16px 40px; }

.bar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: calc(8px + env(safe-area-inset-top, 0px)) 12px 8px;
  background: var(--card);
  border-bottom: 1px solid var(--line);
}
.bar h1 { flex: 1; margin: 0; font-size: 19px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.back { font-size: 34px; line-height: 1; padding: 0 12px 4px 4px; color: var(--accent); text-decoration: none; }
.back-space { width: 8px; }
.save-state { font-size: 13px; color: var(--muted); }
.save-state.bad { color: var(--bad); font-weight: 700; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin: 12px 0;
}
.card h2 { font-size: 17px; margin: 0 0 10px; display: flex; align-items: baseline; gap: 8px; }
.count { font-weight: 400; color: var(--muted); font-size: 15px; }

label { display: block; font-size: 14px; color: var(--muted); margin: 8px 0; }
label input, label textarea { margin-top: 4px; }
input[type="text"], input[type="search"], input[type="tel"], input[type="date"], input:not([type]), textarea {
  display: block;
  width: 100%;
  font: inherit;
  font-size: 17px; /* 16px+ stops iOS zooming in */
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
}
input:focus, textarea:focus { outline: 3px solid color-mix(in srgb, var(--accent) 40%, transparent); border-color: var(--accent); }
textarea { resize: vertical; }
.reading { font-size: 22px; font-variant-numeric: tabular-nums; letter-spacing: 0.02em; }
.serial { text-transform: uppercase; font-family: ui-monospace, Menlo, monospace; letter-spacing: 0.05em; }
#search { margin: 12px 0; }

.row { display: flex; gap: 10px; align-items: center; }
.row.wrap { flex-wrap: wrap; }
.row > input { flex: 1; min-width: 0; }
.grow { flex: 1 1 200px; }
.narrow { flex: 0 1 150px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 8px 16px;
  font: inherit;
  font-weight: 600;
  color: var(--accent);
  background: var(--card);
  border: 1.5px solid var(--accent);
  border-radius: 10px;
  text-decoration: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.btn.primary { background: var(--accent); color: var(--accent-text); }
.btn.danger { color: var(--bad); border-color: var(--bad); }
.btn.danger[data-armed] { background: var(--bad); color: #fff; }
.btn.big { min-height: 58px; font-size: 19px; width: 100%; margin: 6px 0; }
.row .btn.big { width: auto; }
.btn.small { min-height: 36px; padding: 4px 12px; font-size: 15px; }
.footer-actions { margin: 16px 0; }
.sticky { position: sticky; bottom: 0; background: var(--bg); padding: 8px 0 calc(8px + env(safe-area-inset-bottom, 0px)); margin: 0; z-index: 5; }

.list { list-style: none; margin: 0; padding: 0; }
.list li { border-top: 1px solid var(--line); }
.list li:first-child { border-top: 0; }
.list a { display: block; padding: 12px 4px; color: var(--text); text-decoration: none; }
.list small { display: block; color: var(--muted); font-size: 14px; margin-top: 2px; }
.list .dim { opacity: 0.55; }
.empty { color: var(--muted); text-align: center; padding: 16px; margin: 0; }
.hint { color: var(--muted); font-size: 14px; margin: 6px 0; }
.warn-text { color: var(--warn); font-weight: 600; }
.notice {
  background: var(--warn-bg);
  color: var(--text);
  border: 1px solid color-mix(in srgb, var(--warn) 40%, transparent);
  border-radius: 10px;
  padding: 10px 12px;
  margin: 10px 0;
  font-size: 15px;
}
.notice .btn { margin-top: 8px; }
.check { display: flex; align-items: center; gap: 10px; font-size: 17px; color: var(--text); }
.check input { width: 26px; height: 26px; }

.cells-choice { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 8px; }
.cells-choice > span:first-child { color: var(--muted); font-size: 14px; }
.cells-choice input { width: 90px; }
.seg {
  min-width: 56px;
  min-height: 44px;
  font: inherit;
  font-weight: 600;
  border: 1.5px solid var(--line);
  background: var(--bg);
  color: var(--text);
  border-radius: 10px;
  cursor: pointer;
}
.seg.on { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.seg.on.ok { background: var(--ok); border-color: var(--ok); color: #fff; }
.seg.on.issue { background: var(--bad); border-color: var(--bad); color: #fff; }
.seg.on.na { background: var(--muted); border-color: var(--muted); color: #fff; }
.checks { display: grid; gap: 8px; margin-bottom: 8px; }
.check-row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 8px; }
.segs { display: flex; gap: 6px; }

.big-out { font-size: 24px; font-weight: 700; min-width: 90px; text-align: right; font-variant-numeric: tabular-nums; }
.tools { justify-content: space-between; margin: 6px 0; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(76px, 1fr)); gap: 6px; margin-top: 6px; }
.cell {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 4px 6px 6px;
  background: var(--bg);
  cursor: pointer;
  min-height: 62px;
}
.cell .n { display: block; font-size: 12px; color: var(--muted); }
.cell .v { display: block; font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; }
.cell .was { display: block; font-size: 11px; color: var(--muted); }
.cell input { font-size: 18px; padding: 4px 6px; }
.cell.missing { border-style: dashed; }
.cell.missing .v { color: var(--muted); font-weight: 400; }
.cell.weak { background: var(--warn-bg); border-color: var(--warn); }
.cell.check, .cell.bad { background: var(--bad-bg); border-color: var(--bad); }
.cell.bad .v { font-size: 15px; color: var(--bad); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { padding: 6px 12px; border-radius: 999px; background: var(--ok-bg); color: var(--ok); font-weight: 600; font-variant-numeric: tabular-nums; }
.chip.low, .chip.check { background: var(--warn-bg); color: var(--warn); }
.chip.bad, .chip.extra { background: var(--bad-bg); color: var(--bad); }

.warnings { background: var(--bad-bg); border: 1px solid var(--bad); border-radius: var(--radius); padding: 10px 14px; margin: 12px 0; }
.warnings ul { margin: 6px 0 0; padding-left: 20px; }
.tips li { margin: 6px 0; }

.scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { border-bottom: 1px solid var(--line); padding: 6px 8px; text-align: left; vertical-align: top; }
th { color: var(--muted); font-weight: 600; white-space: nowrap; }
td.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
td.flag { background: var(--bad-bg); color: var(--bad); font-weight: 700; }
.trend td:first-child { color: var(--muted); }

.report { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; margin-top: 12px; }
.report h1 { font-size: 22px; margin: 0 0 12px; }
.report h2 { font-size: 17px; margin: 18px 0 8px; }
.rp-meta { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
.rp-cells { margin: 8px 0; break-inside: avoid; }
.rp-cells-h { font-weight: 600; font-size: 14px; }
.rp-grid { display: flex; flex-wrap: wrap; gap: 4px 12px; font-size: 13px; font-variant-numeric: tabular-nums; }
.rp-grid b { color: var(--muted); font-weight: 400; }
.rp-grid .flag { color: var(--bad); font-weight: 700; }

.toast {
  position: fixed;
  left: 50%;
  bottom: calc(20px + env(safe-area-inset-bottom, 0px));
  transform: translateX(-50%);
  max-width: min(560px, calc(100vw - 32px));
  background: #111827;
  color: #fff;
  padding: 12px 16px;
  border-radius: 10px;
  z-index: 50;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}
.update {
  position: fixed;
  top: calc(64px + env(safe-area-inset-top, 0px));
  left: 50%;
  transform: translateX(-50%);
  z-index: 40;
  font: inherit;
  font-weight: 600;
  padding: 12px 18px;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
}
[hidden] { display: none !important; }

@media print {
  :root { --bg: #fff; --card: #fff; --text: #000; --line: #bbb; --bad-bg: #fff; color-scheme: light; }
  .bar, .no-print, .toast, .update { display: none !important; }
  main { padding: 0; max-width: none; }
  .report { border: 0; padding: 0; margin: 0; }
  body { font-size: 12px; }
}

.cellrow { margin: 12px 0 16px; }
.cellrow + .cellrow { border-top: 1px solid var(--line); padding-top: 12px; }
.row-h { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; }
.row-h b { font-size: 15px; }
.row-count { flex: 1; color: var(--muted); font-size: 14px; font-weight: 600; }
.row-count.bad { color: var(--bad); }
.row-text { min-height: 52px; }
.cellrow .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
@media (max-width: 480px) { .cellrow .grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.quick { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 10px; }
.chip-btn {
  font: inherit;
  font-size: 15px;
  padding: 8px 14px;
  min-height: 40px;
  border-radius: 999px;
  border: 1.5px solid var(--line);
  background: var(--bg);
  color: var(--text);
  cursor: pointer;
}
.chip-btn:active { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }