:root {
  --bg: #f3f5f8;
  --card: #fff;
  --text: #1c2430;
  --muted: #667085;
  --border: #d5dbe3;
  --primary: #1f4e79;
  --primary-text: #fff;
  --danger: #b42318;
  --ok: #067647;
  --warn: #b54708;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12161c;
    --card: #1b2129;
    --text: #e6e9ee;
    --muted: #98a2b3;
    --border: #2f3844;
    --primary: #4a8bd1;
    --primary-text: #0b1220;
    --danger: #f97066;
    --ok: #47cd89;
    --warn: #fdb022;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font: 15px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 10px 16px;
  background: var(--primary); color: var(--primary-text);
}
.topbar h1 { font-size: 18px; margin: 0; }
.tabs { display: flex; gap: 4px; }
.tabs button {
  background: transparent; color: inherit; border: 0; padding: 6px 12px; border-radius: 6px;
  font: inherit; cursor: pointer; opacity: .8;
}
.tabs button.active { background: rgba(255,255,255,.18); opacity: 1; font-weight: 600; }
.status { margin-left: auto; font-size: 13px; opacity: .9; }
.status.ok::before, .status.warn::before { content: "●"; margin-right: 6px; }
.status.ok::before { color: #7ee2a8; }
.status.warn::before { color: #fec84b; }

main { padding: 16px; max-width: 1200px; margin: 0 auto; }
.tab { display: none; }
.tab.active { display: grid; gap: 16px; }
#tab-nuevo.active { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); align-items: start; }
@media (max-width: 860px) { #tab-nuevo.active { grid-template-columns: 1fr; } }

.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 16px;
}
.card h2 { font-size: 15px; margin: 18px 0 10px; }
.card h2:first-child { margin-top: 0; }
.card h2 small { color: var(--muted); font-weight: 400; margin-left: 6px; }

.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.span2 { grid-column: span 2; }
@media (max-width: 480px) { .grid { grid-template-columns: 1fr; } .span2 { grid-column: auto; } }

label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
input, select {
  font: inherit; font-size: 16px; color: var(--text); background: var(--bg);
  border: 1px solid var(--border); border-radius: 6px; padding: 8px 10px; width: 100%;
}
input:focus, select:focus { outline: 2px solid var(--primary); outline-offset: -1px; }

.actions { display: flex; gap: 8px; justify-content: flex-end; flex-wrap: wrap; margin-top: 16px; }
.actions[hidden] { display: none; }
button, .file-btn {
  font: inherit; border-radius: 6px; padding: 9px 16px; cursor: pointer; border: 1px solid var(--border);
  background: var(--card); color: var(--text);
}
.file-btn { display: inline-flex; flex-direction: row; font-size: 15px; }
button.primary { background: var(--primary); color: var(--primary-text); border-color: var(--primary); font-weight: 600; }
button.primary kbd { font: 11px monospace; opacity: .75; margin-left: 6px; }
button.small { padding: 4px 10px; font-size: 13px; }
button.danger { color: var(--danger); }
button:hover { filter: brightness(1.05); }

.msg { min-height: 1.4em; margin: 10px 0 0; color: var(--ok); }
.msg.error { color: var(--danger); }
.hint { color: var(--muted); font-size: 13px; }

.row { display: flex; gap: 8px; margin-bottom: 12px; }
.row input { flex: 1; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; }
td.nowrap { white-space: nowrap; text-align: right; }
td.empty { text-align: center; color: var(--muted); padding: 24px; }

/* ---------- Etiqueta ---------- */
.preview { display: flex; flex-direction: column; gap: 12px; align-items: center; overflow: hidden; }
.preview .label { zoom: var(--zoom, 1); box-shadow: 0 1px 4px rgba(0,0,0,.25); border-radius: 2mm; }

.label {
  position: relative; overflow: hidden; background: #fff; color: #000;
  font-family: Arial, Helvetica, sans-serif;
}
.lb-box { position: absolute; background: #000; }
.lb-t { position: absolute; line-height: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.lb-t.b { font-weight: 700; }
.lb-t.inv { color: #fff; }
.lb-bc { position: absolute; }
.lb-bc svg { display: block; width: 100%; height: 100%; fill: #000; }

#print-area { display: none; }

@media print {
  body { background: #fff; }
  .topbar, main { display: none !important; }
  #print-area { display: block; }
  #print-area .label { break-after: page; page-break-after: always; }
  #print-area .label:last-child { break-after: auto; page-break-after: auto; }
  * { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}