/* ==========================================================================
   Barcode Restorer — styles
   ========================================================================== */

:root {
  --bg: #f4f6fa;
  --bg-soft: #ffffff;
  --surface: #ffffff;
  --surface-alt: #f7f9fc;
  --border: #dfe4ee;
  --border-strong: #c6cddd;
  --text: #131a2b;
  --text-muted: #5b677d;
  --accent: #2f5cff;
  --accent-hover: #2449d8;
  --accent-soft: #e8edff;
  --danger: #b42318;
  --danger-soft: #fef3f2;
  --warn: #8a5a00;
  --warn-soft: #fff6e5;
  --ok: #067647;
  --ok-soft: #e9f8ef;
  --radius: 14px;
  --radius-sm: 9px;
  /* Page and panel gutters. Kept as variables so the barcode can escape them on
     small screens without hard-coding the arithmetic in two places. */
  --app-pad: 24px;
  --panel-pad: 22px;
  --shadow: 0 1px 2px rgba(19, 26, 43, .06), 0 8px 24px -12px rgba(19, 26, 43, .18);
  --shadow-sm: 0 1px 2px rgba(19, 26, 43, .07);
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --ring: 0 0 0 3px color-mix(in srgb, var(--accent) 35%, transparent);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1117;
    --bg-soft: #151a23;
    --surface: #161b25;
    --surface-alt: #1b212c;
    --border: #2a323f;
    --border-strong: #3a4553;
    --text: #e8ecf4;
    --text-muted: #9aa6b8;
    --accent: #7d9cff;
    --accent-hover: #96aeff;
    --accent-soft: #1d2740;
    --danger: #ff9a90;
    --danger-soft: #33191a;
    --warn: #f0c070;
    --warn-soft: #2c2415;
    --ok: #6ee7a8;
    --ok-soft: #13301f;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 10px 28px -14px rgba(0, 0, 0, .7);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, .35);
  }
}

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

[hidden] { display: none !important; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, p, ul, ol, fieldset { margin: 0; }
fieldset { border: 0; padding: 0; min-width: 0; }
ul { padding: 0; list-style: none; }

a { color: var(--accent); text-underline-offset: 2px; }
a:hover { color: var(--accent-hover); }

kbd {
  font: 600 11px/1 var(--mono);
  padding: 2px 5px;
  border: 1px solid var(--border-strong);
  border-bottom-width: 2px;
  border-radius: 5px;
  background: var(--surface-alt);
  color: var(--text-muted);
  white-space: nowrap;
}

:focus-visible { outline: none; box-shadow: var(--ring); border-radius: 6px; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  clip: rect(0 0 0 0); clip-path: inset(50%);
  overflow: hidden; white-space: nowrap;
}

/* ────────────────────────────── layout ────────────────────────────── */

.app-header {
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
}

.app-header__inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px var(--app-pad);
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  align-items: center;
  justify-content: space-between;
}

.brand { display: flex; align-items: center; gap: 14px; min-width: 0; }

.brand__mark {
  width: 40px; height: 40px;
  flex: none;
  fill: var(--accent);
  background: var(--accent-soft);
  border-radius: 11px;
  padding: 7px;
}

.brand h1 { font-size: 18px; font-weight: 650; letter-spacing: -.01em; }

.brand__tagline { font-size: 13px; color: var(--text-muted); }

.offline-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  font-weight: 550;
  color: var(--ok);
  background: var(--ok-soft);
  border: 1px solid color-mix(in srgb, var(--ok) 30%, transparent);
  padding: 5px 11px;
  border-radius: 999px;
}

.offline-badge .dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: currentColor;
  flex: none;
}

.app-main {
  max-width: 1080px;
  margin: 0 auto;
  padding: var(--app-pad);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.app-footer {
  max-width: 1080px;
  margin: 0 auto;
  padding: 8px var(--app-pad) 40px;
  font-size: 12.5px;
  color: var(--text-muted);
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: var(--panel-pad);
}

/* Compact bar layout, used for "add a new barcode". */
.panel--compact {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  align-items: center;
  justify-content: space-between;
  padding: 16px 22px;
}

.panel--compact .hint { max-width: 62ch; }

.panel__title {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 16px;
  font-weight: 650;
  letter-spacing: -.01em;
  margin-bottom: 16px;
}

/* While a saved barcode is open, its name is headed at the same size it has in
   the saved list: both are 1.5em of the 15px body font. */
#save-panel.is-saved #h-save { font-size: 1.5em; }

/* Secondary line under a panel heading (e.g. the saved-barcode view hint). */
.panel__subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin: -10px 0 16px;
}

/* Collapsible panel heading: the whole row is the toggle. */
.panel__toggle {
  appearance: none;
  display: flex;
  align-items: center;
  gap: 11px;
  flex: 1;
  min-width: 0;
  padding: 0;
  border: 0;
  background: none;
  font: inherit;
  color: inherit;
  letter-spacing: inherit;
  text-align: left;
  cursor: pointer;
}

.panel__toggle:hover .panel__toggle-label { text-decoration: underline; }

.chevron {
  width: 16px;
  height: 16px;
  flex: none;
  margin-left: auto;
  color: var(--text-muted);
  transition: transform .18s ease-out;
}

.panel__toggle[aria-expanded="true"] .chevron { transform: rotate(180deg); }

.step {
  display: grid;
  place-items: center;
  width: 24px; height: 24px;
  flex: none;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 12.5px;
  font-weight: 650;
}

@media (prefers-color-scheme: dark) {
  .step { color: #10151f; }
}

/* ────────────────────────────── notices ───────────────────────────── */

.notice {
  font-size: 13px;
  color: var(--text-muted);
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-left-width: 3px;
  border-radius: var(--radius-sm);
  padding: 10px 13px;
  margin: 12px 0 0;
}

.notice--warn {
  color: var(--warn);
  background: var(--warn-soft);
  border-color: color-mix(in srgb, var(--warn) 32%, transparent);
  border-left-color: var(--warn);
}

.notice--error {
  color: var(--danger);
  background: var(--danger-soft);
  border-color: color-mix(in srgb, var(--danger) 32%, transparent);
  border-left-color: var(--danger);
}

.hint { font-size: 13px; color: var(--text-muted); }

.meta {
  font-size: 12.5px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.meta--strong { font-weight: 550; color: var(--text); }

.status { font-size: 13px; color: var(--text-muted); margin-top: 12px; min-height: 1.2em; }

/* ────────────────────────────── dropzone ──────────────────────────── */

.dropzone {
  display: grid;
  place-items: center;
  gap: 6px;
  text-align: center;
  padding: 38px 24px;
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface-alt);
  cursor: pointer;
  transition: border-color .15s, background .15s, transform .1s;
}

.dropzone:hover { border-color: var(--accent); background: var(--accent-soft); }
.dropzone:active { transform: scale(.995); }

.dropzone.is-dragover {
  border-color: var(--accent);
  border-style: solid;
  background: var(--accent-soft);
}

.dropzone__icon { width: 34px; height: 34px; color: var(--accent); }
.dropzone__title { font-weight: 600; }
.dropzone__hint { font-size: 12.5px; color: var(--text-muted); }

/* ────────────────────────────── buttons ───────────────────────────── */

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 14px;
}

.btn {
  appearance: none;
  font: inherit;
  font-size: 13.5px;
  font-weight: 575;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 9px 15px;
  cursor: pointer;
  transition: background .13s, border-color .13s, color .13s, transform .06s;
  white-space: nowrap;
}

.btn:hover:not(:disabled) { background: var(--surface-alt); border-color: var(--text-muted); }
.btn:active:not(:disabled) { transform: translateY(1px); }

.btn:disabled { opacity: .45; cursor: not-allowed; }

.btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn--primary:hover:not(:disabled) { background: var(--accent-hover); border-color: var(--accent-hover); }

@media (prefers-color-scheme: dark) {
  .btn--primary { color: #10151f; }
  .btn--primary:hover:not(:disabled) { color: #10151f; }
}

.btn--ghost { background: transparent; border-color: var(--border); color: var(--text-muted); }
.btn--ghost:hover:not(:disabled) { color: var(--text); }

/* Green action button (e.g. "Save barcode"). */
.btn--ok {
  background: var(--ok);
  border-color: var(--ok);
  color: #fff;
}
.btn--ok:hover:not(:disabled) {
  background: color-mix(in srgb, var(--ok) 85%, black);
  border-color: color-mix(in srgb, var(--ok) 85%, black);
}

@media (prefers-color-scheme: dark) {
  .btn--ok { color: #10151f; }
  .btn--ok:hover:not(:disabled) { color: #10151f; }
}

/* ─────────────────────────── source / preview ─────────────────────── */

.source-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(240px, 1fr);
  gap: 22px;
  align-items: start;
}

@media (max-width: 760px) {
  .source-layout { grid-template-columns: 1fr; }
}

/* Measurement column: a plain grid item, so its width is well defined and
   independent of the preview canvas we are about to size. */
.preview-col { min-width: 0; }

.preview-wrap {
  display: block;
  width: fit-content;
  max-width: 100%;
  line-height: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background:
    linear-gradient(45deg, var(--surface-alt) 25%, transparent 25%) 0 0 / 18px 18px,
    linear-gradient(-45deg, var(--surface-alt) 25%, transparent 25%) 0 9px / 18px 18px,
    linear-gradient(45deg, transparent 75%, var(--surface-alt) 75%) 9px -9px / 18px 18px,
    linear-gradient(-45deg, transparent 75%, var(--surface-alt) 75%) -9px 0 / 18px 18px,
    var(--surface);
}

/* Sized in JS so the aspect ratio is exact. */
.preview-canvas {
  display: block;
  width: 100%;
  height: auto;
}

.source-side { display: flex; flex-direction: column; gap: 12px; min-width: 0; }

.source-side .btn-row { margin-top: 0; }

/* ─────────────────────────────── checks ───────────────────────────── */

.check {
  display: flex;
  gap: 9px;
  align-items: flex-start;
  font-size: 13.5px;
  cursor: pointer;
  line-height: 1.45;
}

.check input[type="checkbox"] {
  flex: none;
  width: 16px; height: 16px;
  margin: 2px 0 0;
  accent-color: var(--accent);
  cursor: pointer;
}

.check small { color: var(--text-muted); font-size: 12.5px; }

.check--tight { align-items: center; font-size: 12.5px; white-space: nowrap; }

/* ────────────────────────────── progress ──────────────────────────── */

.progress { display: grid; gap: 7px; }

.progress__track {
  height: 6px;
  border-radius: 999px;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  overflow: hidden;
}

.progress__bar {
  height: 100%;
  width: 0;
  background: var(--accent);
  border-radius: 999px;
  transition: width .18s ease-out;
}

.progress__text { font-size: 12.5px; color: var(--text-muted); font-variant-numeric: tabular-nums; }

/* ─────────────────────────── result cards ─────────────────────────── */

.result-card {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 13px 15px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-alt);
  cursor: pointer;
  transition: border-color .13s, background .13s;
}

.result-card + .result-card { margin-top: 9px; }

.result-card:hover { border-color: var(--border-strong); }

.result-card.is-selected {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: inset 0 0 0 1px var(--accent);
}

.result-card input[type="radio"] { margin: 3px 0 0; accent-color: var(--accent); flex: none; }

.result-card__body { min-width: 0; flex: 1; display: grid; gap: 6px; }

.result-card__head { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }

.badge {
  font-size: 11.5px;
  font-weight: 650;
  letter-spacing: .02em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
}

.badge--ok { background: var(--ok-soft); color: var(--ok); border-color: color-mix(in srgb, var(--ok) 28%, transparent); }
.badge--warn { background: var(--warn-soft); color: var(--warn); border-color: color-mix(in srgb, var(--warn) 28%, transparent); }
.badge--muted { background: var(--surface); color: var(--text-muted); border-color: var(--border); }

.payload {
  font-family: var(--mono);
  font-size: 13px;
  word-break: break-all;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 7px;
  padding: 8px 10px;
  max-height: 8.5em;
  overflow: auto;
  white-space: pre-wrap;
}

.payload--empty { color: var(--text-muted); font-style: italic; font-family: inherit; }

/* ─────────────────────────────── output ───────────────────────────── */

/* The barcode preview lives in the save panel now, so the options stand alone. */
.output-layout { display: block; }

.controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  align-items: start;
  min-width: 0;
}

/* Single fields read badly squeezed into half a row, so they span the width;
   the two fieldsets pair up side by side. */
.controls > .field { grid-column: 1 / -1; }

@media (max-width: 760px) {
  .controls { grid-template-columns: minmax(0, 1fr); }
}

.fieldset {
  display: grid;
  gap: 13px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px;
  background: var(--surface-alt);
}

.fieldset legend {
  font-size: 11.5px;
  font-weight: 650;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-muted);
  padding: 0 6px;
}

.field { display: grid; gap: 6px; min-width: 0; }

.field__label {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.field__label output {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 6px;
}

.field__hint { font-size: 12px; color: var(--text-muted); }

input[type="text"], select {
  font: inherit;
  font-size: 13.5px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 9px 11px;
  width: 100%;
  min-width: 0;
}

input[type="text"] { font-family: var(--mono); }

select { cursor: pointer; }

input[type="text"]:hover, select:hover { border-color: var(--text-muted); }

input[type="range"] {
  width: 100%;
  margin: 2px 0;
  accent-color: var(--accent);
  cursor: pointer;
}

.color-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: flex-end;
}

.field--color { justify-items: start; gap: 5px; }

input[type="color"] {
  width: 46px;
  height: 32px;
  padding: 2px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: var(--surface);
  cursor: pointer;
}

/* ───────────────────────────── render frame ───────────────────────── */

.render-frame {
  display: grid;
  place-items: center;
  padding: 20px;
  min-height: 190px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
  overflow: auto;
}

.render-frame svg, .render-frame canvas { max-width: 100%; height: auto; display: block; }

/* ──────────────────────────── save panel ──────────────────────────── */

/* The symbol and the name-it/save controls sit side by side on wide screens. */
.save-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(260px, .75fr);
  gap: 20px;
  align-items: start;
  margin-top: 14px;
}

@media (max-width: 760px) {
  .save-layout { grid-template-columns: minmax(0, 1fr); }
}

.save-preview { display: flex; flex-direction: column; gap: 10px; min-width: 0; }

.save-form { display: flex; flex-direction: column; gap: 12px; min-width: 0; }

.save-form .btn-row { margin-top: 0; }

/* ────────────────────────── saved barcode library ─────────────────── */

.count {
  font-size: 11.5px;
  font-weight: 650;
  color: var(--text-muted);
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 9px;
  font-variant-numeric: tabular-nums;
}

.count:empty { display: none; }

.library { display: grid; gap: 10px; }

.library-item {
  display: grid;
  grid-template-columns: 132px minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-alt);
  cursor: pointer;
  transition: border-color .13s, background .13s, box-shadow .13s;
}

.library-item:hover { border-color: var(--border-strong); }

.library-item.is-active {
  border-color: var(--ok);
  background: var(--ok-soft);
  box-shadow: inset 0 0 0 1px var(--ok);
}

/* A fixed box plus preserveAspectRatio="meet" means both wide linear symbols
   and square QR codes fit without distortion. */
.library-item__thumb {
  height: 62px;
  padding: 6px;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.library-item__thumb svg { display: block; }

.library-item__thumb.is-broken {
  background: var(--warn-soft);
  border-color: color-mix(in srgb, var(--warn) 30%, transparent);
  color: var(--warn);
  font-size: 18px;
  font-weight: 700;
}

.library-item__body { min-width: 0; display: grid; gap: 6px; }

.library-item__head { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }

.library-item__name {
  appearance: none;
  font: inherit;
  font-size: 1.5em;
  font-weight: 650;
  color: var(--text);
  background: none;
  border: 0;
  padding: 0;
  text-align: left;
  cursor: pointer;
}

.library-item__name:hover { color: var(--accent); text-decoration: underline; }

.library-item__actions { display: flex; gap: 6px; align-items: center; }

.library-item .payload { max-height: 4.4em; font-size: 12.5px; }

.btn--sm { padding: 6px 11px; font-size: 12.5px; }

@media (max-width: 640px) {
  .library-item { grid-template-columns: 88px minmax(0, 1fr); }
  .library-item__actions { grid-column: 1 / -1; justify-content: flex-end; }
}

/* ─────────────────────────────── toast ────────────────────────────── */

.toast {
  position: fixed;
  left: 50%;
  bottom: 26px;
  transform: translate(-50%, 14px);
  z-index: 50;
  max-width: min(90vw, 460px);
  padding: 11px 17px;
  border-radius: 999px;
  background: #131a2b;
  color: #fff;
  font-size: 13.5px;
  font-weight: 550;
  box-shadow: 0 10px 30px -8px rgba(0, 0, 0, .5);
  opacity: 0;
  transition: opacity .2s, transform .2s;
  pointer-events: none;
}

.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }

@media (prefers-color-scheme: dark) {
  .toast { background: #e8ecf4; color: #10151f; }
}

/* ─────────────────────────────── print ────────────────────────────── */

/* ────────────────────────── pull to refresh ───────────────────────── */

/* We provide our own gesture, so suppress the browser's (Chrome on Android
   would otherwise show its spinner at the same time). */
html { overscroll-behavior-y: contain; }

.ptr {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  display: flex;
  justify-content: center;
  pointer-events: none;
  /* Resting state sits just above the viewport; pulling slides it into view.
     52px clears the pill (12px offset + ~30px tall + margin). */
  transform: translateY(calc(var(--ptr-offset, 0px) - 52px));
  transition: transform .22s ease-out;
}

.ptr.is-pulling { transition: none; }
.ptr.is-refreshing { transform: translateY(0); }

.ptr__inner {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 12px;
  padding: 7px 14px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow);
  font-size: 12.5px;
  font-weight: 550;
  color: var(--text-muted);
}

.ptr__spinner {
  width: 15px;
  height: 15px;
  flex: none;
  border: 2px solid var(--border-strong);
  border-top-color: var(--accent);
  border-radius: 50%;
}

.ptr.is-armed .ptr__inner {
  color: var(--accent);
  border-color: var(--accent);
}

.ptr.is-refreshing .ptr__spinner { animation: ptr-spin .65s linear infinite; }

@keyframes ptr-spin { to { transform: rotate(360deg); } }

/* The page content follows the pull. Applied only while the gesture is live, so
   the page is not left with a permanent transform / stacking context. */
body.ptr-active .app-header,
body.ptr-active .app-main {
  transform: translateY(var(--ptr-offset, 0px));
  transition: transform .22s ease-out;
}

body.ptr-drag .app-header,
body.ptr-drag .app-main { transition: none; }

/* ─────────────────────────────── mobile ───────────────────────────── */

/* Shrinking the gutters gives every panel a bit more room on a phone, and
   then the barcode breaks out of the panel entirely — a dense linear symbol
   needs every pixel, and a phone screen has none to spare. */
@media (max-width: 700px) {
  :root {
    --app-pad: 10px;
    --panel-pad: 15px;
  }

  .render-frame {
    /* Cancels the app gutter, the panel's 1px border and the panel gutter,
       which lands the frame exactly on the app-main border box (i.e. the full
       width of the layout), so this can never cause horizontal overflow. */
    margin-inline: calc(-1 * (var(--app-pad) + var(--panel-pad) + 1px));
    padding: 12px 8px;
    border-inline: 0;
    border-radius: 0;
    min-height: 150px;
  }

  /* The preview is always SVG, so it scales losslessly. Without this it would
     stop at the symbol's natural pixel width (the inline max-width), which on a
     phone can leave a wide barcode or QR code much narrower than the screen. */
  .render-frame > svg { max-width: 100% !important; }
}

/* ──────────────────── landscape full-screen symbol ────────────────── */

/* A phone turned sideways shows the symbol on its own: it is the thing being
   held up to a scanner, so everything else on the page is just clutter and
   something to bump. The class is only ever applied on a touch device with a
   symbol on screen — see syncFullscreenSymbol() in app.js. */
body.is-symbol-fullscreen { overflow: hidden; }

body.is-symbol-fullscreen .app-header,
body.is-symbol-fullscreen .app-main,
body.is-symbol-fullscreen .app-footer,
body.is-symbol-fullscreen .ptr { display: none; }

.fullscreen-symbol {
  position: fixed;
  inset: 0;
  z-index: 70;
  display: grid;
  place-items: center;
  /* Keeps the bars clear of the notch / camera cutout, which sits on a side
     edge once the phone is on its side. */
  padding: max(4px, env(safe-area-inset-top)) max(4px, env(safe-area-inset-right))
           max(4px, env(safe-area-inset-bottom)) max(4px, env(safe-area-inset-left));
  /* Same white as .render-frame: a symbol needs a light background to be
     legible, whatever the page theme is doing. */
  background: #fff;
}

/* The symbol keeps its aspect ratio and grows to the largest size that fits. */
.fullscreen-symbol > svg { display: block; width: 100%; height: 100%; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
  }
}