:root {
  --bg: #f3f4f6;
  --panel: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #2563eb;
  --accent-text: #ffffff;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding: 12px 20px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 5;
}
.topbar h1 { font-size: 18px; margin: 0; }
.actions { display: flex; gap: 8px; }

.btn {
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }

.layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 20px;
  padding: 20px;
  align-items: start;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px;
  position: sticky;
  top: 76px;
  max-height: calc(100vh - 96px);
  overflow: auto;
}

.tabs { display: flex; gap: 4px; margin-bottom: 14px; background: var(--bg); padding: 4px; border-radius: 8px; }
.tab { flex: 1; border: 0; background: transparent; padding: 8px; border-radius: 6px; cursor: pointer; font-size: 14px; color: var(--muted); }
.tab.active { background: var(--panel); color: var(--text); font-weight: 600; box-shadow: 0 1px 2px rgba(0,0,0,.08); }

label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 12px; }
label code { font-size: 12px; }
input[type=text], input[type=number], textarea, select {
  display: block;
  width: 100%;
  margin-top: 4px;
  padding: 8px 10px;
  font: inherit;
  font-size: 14px;
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}
textarea { resize: vertical; }
input[type=color] { display: block; margin-top: 4px; width: 60px; height: 32px; border: 1px solid var(--line); border-radius: 6px; padding: 2px; }
label.check { display: flex; align-items: center; gap: 8px; color: var(--text); font-size: 14px; }

fieldset { border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px 2px; margin: 0 0 14px; }
legend { font-size: 13px; font-weight: 600; padding: 0 4px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.presets { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; font-size: 13px; color: var(--muted); }
.chip { border: 1px solid var(--line); background: #fff; border-radius: 999px; padding: 3px 10px; font-size: 13px; cursor: pointer; }
.chip:hover { border-color: var(--accent); color: var(--accent); }

.status { font-size: 13px; color: var(--muted); margin: 4px 0 0; }
.status.error { color: #b91c1c; }

.preview { min-width: 0; overflow-x: auto; }
.hint { font-size: 13px; color: var(--muted); margin: 0 0 12px; }

/* ===== A4 sheet ===== */
.page {
  width: 210mm;
  height: 297mm;
  padding: 10mm;
  background: #fff;
  margin: 0 auto 20px;
  box-shadow: 0 2px 10px rgba(0,0,0,.12);
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 4mm;
  overflow: hidden;
}

.label {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 3mm;
  text-align: center;
  color: #000;
  break-inside: avoid;
}
.label.cut { outline: 0.2mm dashed #9ca3af; }
.label svg { display: block; }
.label .t {
  font-size: 9pt;
  font-weight: 600;
  line-height: 1.2;
  margin-top: 1.5mm;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  width: 100%;
}
.label .s {
  font-size: 7pt;
  line-height: 1.2;
  color: #374151;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  width: 100%;
}

.empty { text-align: center; color: var(--muted); padding: 60px 20px; }

@media (max-width: 860px) {
  .layout { grid-template-columns: 1fr; padding: 16px; }
  .panel { position: static; max-height: none; }
}

/* ===== Print ===== */
@page { size: A4; margin: 0; }
@media print {
  body { background: #fff; }
  .no-print { display: none !important; }
  .layout { display: block; padding: 0; }
  .preview { overflow: visible; }
  .page { margin: 0; box-shadow: none; page-break-after: always; break-after: page; }
  .page:last-child { page-break-after: auto; break-after: auto; }
  * { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}