:root {
  --bg: #f3f5f8;
  --surface: #ffffff;
  --text: #15181d;
  --muted: #5d6673;
  --border: #d9dee6;
  --primary: #0f5fd7;
  --primary-text: #ffffff;
  --ok: #12804a;
  --ok-bg: #e5f5ec;
  --warn: #9a5b00;
  --warn-bg: #fff3dc;
  --err: #c0262d;
  --err-bg: #fde8e8;
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #101317;
    --surface: #1a1f26;
    --text: #e9edf2;
    --muted: #9aa4b1;
    --border: #2c333d;
    --primary: #4c8dff;
    --primary-text: #0b1220;
    --ok: #4ccb86;
    --ok-bg: #12301f;
    --warn: #f0b14a;
    --warn-bg: #33270f;
    --err: #ff7a7f;
    --err-bg: #3a1618;
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font: 16px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  padding: env(safe-area-inset-top) 0 env(safe-area-inset-bottom);
  -webkit-tap-highlight-color: transparent;
}
[hidden] { display: none !important; }
.view { max-width: 640px; margin: 0 auto; padding: 0 16px 24px; }
.muted { color: var(--muted); }
.error { color: var(--err); min-height: 1.4em; margin: 8px 0 0; }

input {
  width: 100%;
  font: inherit;
  font-size: 17px;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
  color: var(--text);
}
input:focus { outline: 2px solid var(--primary); outline-offset: 0; border-color: transparent; }
label { display: block; font-size: 14px; color: var(--muted); margin-bottom: 12px; }
label input { margin-top: 4px; color: var(--text); }

.btn {
  font: inherit;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 10px;
  padding: 12px 16px;
  cursor: pointer;
}
.btn.primary { background: var(--primary); border-color: var(--primary); color: var(--primary-text); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--primary); padding-left: 4px; padding-right: 4px; }
.btn.small { padding: 8px 12px; font-size: 14px; }
.btn.big { width: 100%; padding: 16px; font-size: 18px; }
.btn:disabled { opacity: .5; }

.login-card { padding-top: 12vh; text-align: center; }
.login-card form { text-align: left; margin-top: 24px; }
.login-logo { width: 72px; height: 72px; border-radius: 18px; }
.login-card h1 { margin: 12px 0 4px; font-size: 24px; }

.topbar {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 12px 0; background: var(--bg);
}
.topbar strong { font-size: 18px; }
#who { margin-left: 8px; font-size: 14px; }
.count-pill {
  min-width: 36px; text-align: center; padding: 4px 10px; border-radius: 999px;
  background: var(--primary); color: var(--primary-text); font-weight: 700;
}

.home-menu { display: grid; gap: 14px; margin-top: 8px; }
.menu-tile {
  display: grid; gap: 4px; text-align: left; font: inherit; color: var(--text);
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px; cursor: pointer;
}
.tile-icon { font-size: 32px; }
.tile-title { font-size: 20px; font-weight: 700; }

.scanner-wrap { margin-bottom: 10px; }
.scanner {
  position: relative; width: 100%; border-radius: var(--radius); overflow: hidden;
  background: #000; margin-bottom: 8px;
}
.scanner:empty { display: none; }
.scanner video { width: 100%; display: block; }
.scanner canvas.drawingBuffer { display: none; }
/* vạch ngắm: khung ngang ở giữa - đưa mã vạch vào trong khung này */
.scanner::after {
  content: ""; position: absolute; left: 6%; right: 6%; top: 32%; bottom: 32%;
  border: 3px solid rgba(255, 255, 255, .85); border-radius: 8px;
  box-shadow: 0 0 0 999px rgba(0, 0, 0, .35); pointer-events: none;
  transition: border-color .15s;
}
.scanner.hit::after { border-color: #2ee07a; border-width: 5px; }
.scan-actions { display: flex; gap: 8px; }
.scan-actions .btn { flex: 1; text-align: center; }
.photo-btn { margin: 0; color: var(--text); font-size: 16px; }

.manual { display: flex; gap: 8px; margin-bottom: 12px; }
.manual input { flex: 1; }

.tabs { display: flex; gap: 6px; margin-bottom: 8px; }
.tab {
  flex: 1; font: inherit; font-weight: 600; padding: 10px; border-radius: 10px;
  border: 1px solid var(--border); background: transparent; color: var(--muted); cursor: pointer;
}
.tab.active { background: var(--surface); color: var(--text); }

.scan-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.scan-item {
  display: flex; align-items: center; gap: 10px; padding: 12px;
  border-radius: 12px; background: var(--surface); border: 1px solid var(--border);
  border-left-width: 6px;
}
.scan-item.ok { border-left-color: var(--ok); }
.scan-item.warn { border-left-color: var(--warn); background: var(--warn-bg); }
.scan-item.err { border-left-color: var(--err); background: var(--err-bg); }
.scan-item.pending { border-left-color: var(--border); opacity: .7; }
.scan-main { flex: 1; min-width: 0; }
.scan-code { font-weight: 700; font-variant-numeric: tabular-nums; word-break: break-all; }
.scan-sub { font-size: 14px; color: var(--muted); }
.scan-item.err .scan-sub { color: var(--err); }
.scan-item.warn .scan-sub { color: var(--warn); }
.scan-time { font-size: 13px; color: var(--muted); }
.remove { border: none; background: transparent; color: var(--err); font-size: 22px; padding: 4px 8px; cursor: pointer; }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; margin: 12px 0;
}
.grid-4 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 0 10px; }
.bag-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; font-size: 18px; }

.toast {
  position: fixed; left: 16px; right: 16px; bottom: calc(16px + env(safe-area-inset-bottom));
  max-width: 608px; margin: 0 auto; padding: 14px 16px; border-radius: 12px;
  font-weight: 600; z-index: 20; box-shadow: 0 6px 24px rgba(0,0,0,.18);
  background: var(--surface); color: var(--text); border: 1px solid var(--border);
}
.toast.ok { background: var(--ok-bg); color: var(--ok); }
.toast.warn { background: var(--warn-bg); color: var(--warn); }
.toast.err { background: var(--err-bg); color: var(--err); }