:root {
  --bg: #0f141a; --panel: #161d26; --line: #263241; --text: #e6edf3; --muted: #93a1b2;
  --accent: #4ea1ff; --accent-2: #8cc3ff; --err: #ff8080;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
.top { padding: 18px 22px; border-bottom: 1px solid var(--line); display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 16px; }
.brand { font-size: 22px; font-weight: 700; }
.logo { color: var(--accent); }
.sub { color: var(--muted); font-size: 14px; }
.layout { display: grid; grid-template-columns: minmax(300px, 420px) 1fr; gap: 20px; padding: 20px; }
@media (max-width: 860px) { .layout { grid-template-columns: 1fr; } }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 14px; padding: 18px; align-self: start; }
.panel h3 { margin: 18px 0 8px; font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }
.field { display: block; margin: 0 0 12px; }
.field > span { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 9px 10px; border-radius: 9px; border: 1px solid var(--line); background: #0d1218; color: var(--text); font: inherit;
}
.field textarea { min-height: 70px; resize: vertical; }
.field input[type=checkbox] { width: auto; margin-right: 6px; }
.check { display: flex; align-items: center; gap: 6px; margin: 0 0 12px; color: var(--text); font-size: 14px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
button { font: inherit; padding: 10px 14px; border-radius: 10px; border: 1px solid var(--line); background: #1d2632; color: var(--text); cursor: pointer; }
button:hover { border-color: var(--muted); }
button.primary { background: var(--accent); border-color: var(--accent); color: #041222; font-weight: 700; }
.msg { min-height: 1.4em; margin: 10px 0 0; color: var(--accent-2); font-size: 14px; }
.list { margin: 6px 0 4px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 10px; }
.list summary { cursor: pointer; font-weight: 600; }
.note { color: var(--muted); font-size: 13px; margin: 6px 0; }
.help { margin-top: 12px; color: var(--muted); font-size: 13px; }
.help summary { cursor: pointer; color: var(--text); }
.preview-wrap { min-width: 0; }
.preview-head { display: flex; justify-content: space-between; gap: 10px; color: var(--muted); font-size: 14px; margin-bottom: 8px; }
.err { color: var(--err); }
.stage { background: repeating-conic-gradient(#1a222c 0 25%, #151c24 0 50%) 0 0 / 22px 22px; border: 1px solid var(--line); border-radius: 14px; min-height: 420px; display: grid; place-items: center; padding: 24px; overflow: hidden; }
#scaler { transform-origin: center center; }
.hint { color: var(--muted); font-size: 13px; }
:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 2px; }

/* ---------- the label itself (real units) ---------- */
.label { background: #fff; color: #000; overflow: hidden; position: relative; font-family: Arial, Helvetica, sans-serif; box-shadow: 0 6px 30px rgba(0,0,0,.45); border-radius: 2px; }
.label .pad { position: absolute; inset: 0.06in; display: flex; flex-direction: column; }
.label .grow { flex: 1; min-height: 0; }
.label .center { display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; }
.label .bc { width: 100%; display: block; }
.label .qr { display: block; }
.label .qr svg { width: 100%; height: 100%; display: block; }
.label .hr { border-top: 0.02in solid #000; margin: 0.04in 0; }
.label .small { font-size: 7pt; }
.label .tiny { font-size: 6pt; text-transform: uppercase; letter-spacing: .03em; }
.label .bold { font-weight: 700; }
.label .mono { font-family: "Courier New", monospace; }
.label .clip { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.label .band { color: #fff; font-weight: 700; text-align: center; }

/* ---------- printing ---------- */
#printArea { display: none; }
@media print {
  body > *:not(#printArea) { display: none !important; }
  #printArea { display: block; }
  #printArea .label { box-shadow: none; border-radius: 0; }
  .sheet { position: relative; break-after: page; page-break-after: always; }
  .sheet .label { position: absolute; }
  .single { break-after: page; page-break-after: always; }
  * { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}