/* Handheld styles. Warehouse lighting is harsh (glare, dim aisles, freezer fog): high contrast, big type,
   touch targets ≥ 48 px so they work with gloves. Colours are tokens so dark/light is one switch. */
:root {
  --bg: #ffffff;
  --surface: #f1f3f6;
  --text: #0b1220;
  --muted: #3d4757;
  --border: #9aa4b2;
  --accent: #0047b3;
  --accent-text: #ffffff;
  --ok: #0a6b2d;
  --ok-bg: #d9f5e3;
  --warn: #8a4b00;
  --warn-bg: #ffecc7;
  --err: #a30015;
  --err-bg: #ffdfe3;
  --focus: #ff9e00;
  --tap: 3.25rem; /* 52 px: above the 48 px minimum */
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --surface: #18212f;
    --text: #f5f7fa;
    --muted: #b8c2d0;
    --border: #5a6678;
    --accent: #5aa2ff;
    --accent-text: #04101f;
    --ok: #5ee08b;
    --ok-bg: #0d3a1f;
    --warn: #ffc15e;
    --warn-bg: #3d2a05;
    --err: #ff7a8a;
    --err-bg: #4a0d16;
    --focus: #ffb84d;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  background: var(--bg); color: var(--text);
  font: 18px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  min-height: 100vh; display: flex; flex-direction: column;
  padding-bottom: calc(var(--tap) + env(safe-area-inset-bottom));
}
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
[hidden] { display: none !important; }
h1 { font-size: 1.4rem; margin: .25rem 0 .75rem; }
h2 { font-size: 1.15rem; margin: .5rem 0; }
.muted { color: var(--muted); }
.mono { font-family: ui-monospace, "Roboto Mono", monospace; word-break: break-all; }

/* ── Chrome ── */
.topbar {
  position: sticky; top: 0; z-index: 2; display: flex; align-items: center; gap: .5rem;
  padding: .25rem .5rem; background: var(--surface); border-bottom: 2px solid var(--border);
}
.brand { font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 30%; }
.status { flex: 1; display: flex; gap: .35rem; flex-wrap: wrap; justify-content: flex-end; }
.pill { border-radius: 999px; padding: .15rem .6rem; font-size: .85rem; font-weight: 700; border: 2px solid currentColor; }
.pill.ok { color: var(--ok); background: var(--ok-bg); }
.pill.warn { color: var(--warn); background: var(--warn-bg); }
.pill.err { color: var(--err); background: var(--err-bg); }
.pill button { all: unset; cursor: pointer; text-decoration: underline; }

main { flex: 1; padding: .75rem; max-width: 40rem; width: 100%; margin: 0 auto; }

.bottomnav {
  position: fixed; inset: auto 0 0 0; z-index: 2; display: grid; grid-template-columns: repeat(4, 1fr);
  background: var(--surface); border-top: 2px solid var(--border); padding-bottom: env(safe-area-inset-bottom);
}
.bottomnav a {
  min-height: var(--tap); display: flex; align-items: center; justify-content: center;
  color: var(--text); text-decoration: none; font-weight: 600; font-size: .95rem;
}
.bottomnav a[aria-current="page"] { color: var(--accent); box-shadow: inset 0 4px 0 var(--accent); }

.flash {
  position: sticky; top: 3rem; z-index: 3; margin: .5rem .75rem 0; padding: .75rem 1rem; border-radius: .5rem;
  font-weight: 700; font-size: 1.1rem; border: 2px solid currentColor;
}
.flash.ok { color: var(--ok); background: var(--ok-bg); }
.flash.err { color: var(--err); background: var(--err-bg); }
.flash.warn { color: var(--warn); background: var(--warn-bg); }

/* ── Controls ── */
.btn, .icon-btn, select, input {
  min-height: var(--tap); font: inherit; color: var(--text); border-radius: .5rem;
}
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem; padding: 0 1.1rem;
  background: var(--surface); border: 2px solid var(--border); font-weight: 700; cursor: pointer; text-decoration: none;
}
.btn-primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.btn-danger { color: var(--err); border-color: var(--err); }
.btn-block { width: 100%; }
.btn:disabled { opacity: .5; cursor: default; }
.icon-btn {
  min-width: var(--tap); display: inline-flex; align-items: center; justify-content: center;
  background: transparent; border: 2px solid transparent; font-size: 1.4rem; text-decoration: none; cursor: pointer;
}
.icon-btn[aria-pressed="true"] { border-color: var(--accent); }
select, input { width: 100%; padding: 0 .75rem; background: var(--bg); border: 2px solid var(--border); }
label { display: block; font-weight: 600; margin: .75rem 0 .25rem; }
.hint { font-size: .9rem; color: var(--muted); margin: .25rem 0 0; }
.stack > * + * { margin-top: .75rem; }
.row { display: flex; gap: .5rem; }
.row > * { flex: 1; }

.scan-row { display: flex; gap: .35rem; align-items: stretch; margin: .5rem 0 .75rem; }
.scan-row input { flex: 1; font-family: ui-monospace, "Roboto Mono", monospace; font-size: 1.1rem; border-width: 3px; border-color: var(--accent); }

/* ── Cards / lists ── */
.cards { list-style: none; margin: 0; padding: 0; }
.cards > li + li { margin-top: .6rem; }
.card {
  display: block; padding: .75rem; border: 2px solid var(--border); border-radius: .6rem;
  background: var(--surface); color: var(--text); text-decoration: none;
}
a.card { min-height: var(--tap); }
.card-head { display: flex; justify-content: space-between; align-items: center; gap: .5rem; }
.kind { font-weight: 800; letter-spacing: .03em; }
.prio { font-weight: 800; padding: .1rem .5rem; border-radius: .35rem; border: 2px solid var(--border); }
.prio.urgent { color: var(--err); border-color: var(--err); background: var(--err-bg); }
.tail { font: 800 2.4rem/1.1 ui-monospace, "Roboto Mono", monospace; letter-spacing: .05em; margin: .25rem 0; }
.route { font-size: 1.1rem; font-weight: 600; }
.sev-CRITICAL { border-color: var(--err); }
.sev-CRITICAL .sev { color: var(--err); }
.sev-WARNING .sev, .sev-WARN .sev { color: var(--warn); }

.big-count { font: 800 4.5rem/1 system-ui, sans-serif; text-align: center; margin: .5rem 0; }
.compare { display: grid; gap: .5rem; margin: .75rem 0; }
.compare > div { padding: .6rem .75rem; border-radius: .5rem; border: 2px solid var(--border); }
.compare .bad { border-color: var(--err); background: var(--err-bg); }
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; text-align: center; }
.stats div { background: var(--surface); border: 2px solid var(--border); border-radius: .5rem; padding: .5rem; }
.stats b { display: block; font-size: 1.8rem; }
.recent li { display: flex; justify-content: space-between; gap: .5rem; padding: .4rem 0; border-bottom: 1px solid var(--border); }
.recent { list-style: none; padding: 0; margin: 0; }
.tag-sent { color: var(--ok); font-weight: 700; }
.tag-queued { color: var(--warn); font-weight: 700; }
.panel { padding: .75rem; border-radius: .6rem; border: 2px solid var(--border); background: var(--surface); }
.panel.ok { border-color: var(--ok); }
.panel.warn { border-color: var(--warn); }
details summary { min-height: var(--tap); display: flex; align-items: center; cursor: pointer; font-weight: 600; }

/* ── Camera ── */
.camera { padding: 0; border: 0; background: #000; width: 100vw; max-width: 100vw; height: 100vh; max-height: 100vh; }
.camera::backdrop { background: #000; }
.camera video { width: 100%; height: calc(100% - var(--tap) - 1rem); object-fit: cover; display: block; }
.camera form { padding: .5rem; }