:root {
    /* Base Layers */
    --bg: #f5f5f8;       /* Clean, light background with a hint of cool slate */
    --surface: #ffffff;  /* Pure white for cards/content areas to pop */
    --surface2: #eaeaf0; /* Slightly darker light gray for secondary elements/hovers */
    --border: #d2d2e1;   /* Soft but visible border line */

    /* Typography */
    --text: #0e0e12;     /* Your original deep dark background color becomes the main text */
    --muted: #62627a;    /* Darkened slightly from the original to pass WCAG contrast on light bg */

    /* Accents & Status */
    --accent: #dbba00;   /* Deepened from #f5c542 so yellow/gold is actually readable on white */
    --accent2: #008585;  /* Deepened from #3ecfcf so cyan doesn't wash out */
    --danger: #dc2626;   /* Swapped to a rich, urgent light-theme red */
    --success: #0c5025;  /* Swapped to a crisp, readable light-theme green */
}

  body[data-theme='dark'] {
    --bg: #0e0e12;
    --surface: #17171f;
    --surface2: #1f1f2a;
    --border: #2a2a38;
    --text: #e8e8f0;
    --muted: #6b6b88;
    --accent: #f5c542;
    --accent2: #3ecfcf;
    --danger: #ff5f5f;
    --success: #4ade80;
  }
  * { box-sizing: border-box; margin: 0; padding: 0; }
  body { background: var(--bg); color: var(--text); font-family: 'Helvetica', sans-serif; min-height: 100vh; transition: background .08s;}

  /* ── Header ── */
  header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 16px 28px;
    display: flex; align-items: center; gap: 16px;
  }
  header .logo { font-family: 'Helvetica', sans-serif; font-weight: 100; font-size: 1.15rem; letter-spacing: -0.02em; }
  header .logo span { color: var(--accent); }
  header .subtitle { color: var(--muted); font-size: 0.8rem; font-family: 'Helvetica', monospace; }

  /* ── Layout ── */
  .app { display: grid; grid-template-columns: 35% 1fr; height: calc(100vh); }
  .sidebar { background: var(--surface); border-right: 1px solid var(--border); display: flex; flex-direction: column; overflow: hidden; transition: background .08s;}
  .main { display: flex; flex-direction: column; overflow: hidden; }

  /* ── Controls ── */
  .controls { padding: 16px; border-bottom: 1px solid var(--border); display: flex; flex-direction: column; gap: 10px; }
  .sidebar-actions { display: flex; flex-direction: row; gap: 10px; .btn { flex: 1; } a { text-decoration: none; color: #000; }}
  .search-wrap { position: relative; flex: 5;}
  .search-wrap input {
    width: 100%; height: 4rem; background: var(--surface2); border: 1px solid var(--border); border-radius: 8px;
    padding: 9px 12px 9px 36px; color: var(--text); font-size: 0.85rem; outline: none;
  }
  .search-wrap input:focus { border-color: var(--accent2); }
  .search-wrap svg { position: absolute; left: 10px; top: 50%; transform: translateY(-50%); opacity: .4; pointer-events: none; }
  .filter-row { display: flex; gap: 8px; }
  .filter-row select {
    flex: 1; background: var(--surface2); border: 1px solid var(--border); border-radius: 8px;
    padding: 8px 10px; color: var(--text); font-size: 0.8rem; outline: none; cursor: pointer;
  }
  .filter-row select:focus { border-color: var(--accent2); }
  .filter-text {
    display: flex;
    align-items: center;
    gap: 14px;
    font-family: 'Helvetica', monospace;
    font-size: 0.72rem;
    color: var(--muted);
  }
  .zero-qty-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    color: inherit;
    font-family: inherit;
    font-size: inherit;
    text-decoration: none;
    margin: 0;
  }
  .zero-qty-toggle span {
    text-decoration: none;
  }
  .zero-qty-toggle input {
    width: 16px;
    height: 16px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--surface2);
    cursor: pointer;
  }
  .count-badge { color: inherit; padding-top: 0; }

  /* ── Table ── */
  .table-wrap { flex: 1; overflow-y: auto; }
  .table-wrap::-webkit-scrollbar { width: 5px; }
  .table-wrap::-webkit-scrollbar-track { background: transparent; }
  .table-wrap::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
  table { width: 100%; border-collapse: collapse; font-size: 0.78rem; }
  thead th {
    position: sticky; top: 0; background: var(--surface2); color: var(--muted);
    font-family: 'Helvetica', monospace; font-size: 0.68rem; text-transform: uppercase; letter-spacing: .05em;
    padding: 8px 10px; text-align: left; border-bottom: 1px solid var(--border);
  }
  tbody tr { border-bottom: 1px solid var(--border); cursor: pointer; }
  tbody tr:hover { background: var(--surface2); }
  tbody tr.active { background: rgba(245,197,66,.06); }
  tbody tr.active td:first-child { border-left: 2px solid var(--accent); }
  td { padding: 7px 10px; vertical-align: top; }
  td.line { font-family: 'Helvetica', monospace; color: var(--muted); width: 36px; }
  td.area { color: var(--accent2); font-size: 0.72rem; max-width: 80px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  td.desc { max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text); }
  td.art { font-family: 'Helvetica', monospace; color: var(--muted); font-size: 0.72rem; }
  .qty-chips { display: flex; gap: 3px; flex-wrap: wrap; }
  .qty-chip {
    font-family: 'Helvetica', monospace; font-size: 0.65rem; padding: 1px 5px; border-radius: 4px;
    background: var(--surface2); border: 0.1rem solid var(--border); color: var(--muted);
  }
  .qty-chip.has-qty { background: rgba(78,222,128,.3); border-color: rgba(78,222,128,.4); color: var(--success); }

  /* ── Right panel ── */
  .main-header { padding: 20px 28px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
  .main-header h2 { font-family: 'Helvetica', sans-serif; font-size: 1rem; color: var(--muted); }
  .main-header h2 span { color: var(--text); }
  .empty-state { flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 12px; color: var(--muted); }
  .empty-state svg { opacity: .2; }
  .empty-state p { font-size: 0.85rem; }

  /* ── Label editor ── */
  .editor-area { flex: 1; overflow-y: auto; padding: 24px 28px; display: flex; flex-direction: column; gap: 24px; }
  .rdc-tabs { display: flex; gap: 6px; flex-wrap: wrap; }
  .rdc-tab {
    padding: 6px 14px; border-radius: 8px; font-family: 'Helvetica', monospace; font-size: 0.78rem;
    border: 0.1rem solid var(--border); background: var(--surface2); color: var(--muted); cursor: pointer;
  }
  .rdc-tab.active { background: var(--accent); color: #000; border-color: var(--accent); font-weight: 500; }
  .rdc-tab.has-qty:not(.active) { background: rgba(78,222,128,.3); border-color: rgba(78,222,128,.4); color: var(--success); }
  
  /* ── Label section ── */
  .label-section { display: flex; gap: 24px; align-items: flex-start; flex-wrap: wrap; background-color: var(--surface3); padding: 8px; border-radius: 8px; }
  .label-form { flex: 1; min-width: 260px; display: flex; flex-direction: column; gap: 12px; }
  .field-group { display: flex; flex-direction: column; gap: 4px; }
  .field-group label { font-family: 'Helvetica', monospace; font-size: 0.68rem; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; }
  .field-group input, .field-group textarea {
    background: var(--surface2); border: 1px solid var(--border); border-radius: 8px;
    padding: 9px 12px; color: var(--text); font-size: 0.85rem; outline: none;
    font-family: 'Helvetica', sans-serif; width: 100%;
  }
  .field-group input:focus, .field-group textarea:focus { border-color: var(--accent); }
  .field-group textarea { resize: vertical; min-height: 56px; }

  .checkbox-label { display: flex; align-items: center; gap: 12px; margin: 12px 0; }
  .checkbox-label h1 { text-transform: uppercase; letter-spacing: .05em; color: var(--danger); font-family: 'Helvetica', monospace; font-size: 1rem; font-weight: 400; cursor: pointer; }
  .checkbox-label p { font-family: 'Helvetica', sans-serif; font-size: 0.85rem; color: var(--text); }
  .checkbox-label span { font-weight: 900; text-decoration: underline;}
  .checkbox-label.zero-qty-toggle span { text-decoration: none; }
  .checkbox-label input { width: 24px; height: 24px; border: 2px solid var(--border); border-radius: 4px; background: var(--surface2); cursor: pointer; }

  /* ── Summary panel editor ── */
  .summary-form { flex: 1; min-width: 260px; display: flex; flex-direction: column; gap: 12px; max-height: 45vh; overflow-y: auto; }
  .summary-articles-editor { display: flex; flex-direction: column; gap: 8px; }
  .summary-editor-row { display: flex; gap: 4px; align-items: center; padding: 4px; background: var(--surface2); border-radius: 6px; }
  .summary-editor-row .summary-editor-label { font-family: 'Helvetica', monospace; font-size: 0.75rem; color: var(--muted); flex-shrink: 0; width: 80px; text-overflow: ellipsis; overflow: hidden; white-space: nowrap; }
  .summary-editor-row .summary-article-input, .summary-editor-row .extra-article-input { flex: 1; font-family: 'Helvetica', monospace; font-size: 0.85rem; font-weight: 500; background: var(--surface); border: 1px solid var(--border); border-radius: 4px; padding: 6px 8px; color: var(--text); outline: none; }
  .summary-editor-row .summary-article-input:focus, .summary-editor-row .extra-article-input:focus { border-color: var(--accent2); }
  .summary-editor-row .summary-article-qty-input, .summary-editor-row .extra-qty-input { width: 60px; font-family: 'Helvetica', monospace; font-size: 0.85rem; font-weight: 500; background: var(--surface); border: 1px solid var(--border); border-radius: 4px; padding: 6px 8px; color: var(--text); outline: none; text-align: right; }
  .summary-editor-row .summary-article-qty-input:focus, .summary-editor-row .extra-qty-input:focus { border-color: var(--accent2); }
  .summary-editor-spacer { width: 24px; flex-shrink: 0; }
  .extra-row { border: 1px solid var(--accent2); }
  .btn-remove-extra { width: 24px; height: 24px; border-radius: 4px; border: 1px solid var(--border); background: var(--surface); color: var(--danger); font-size: 0.75rem; cursor: pointer; display: flex; align-items: center; justify-content: center; flex-shrink: 0; padding: 0; }
  .btn-remove-extra:hover { background: var(--danger); color: #fff; border-color: var(--danger); }
  .btn-add-article { margin-top: 4px; width: 100%; padding: 8px; border-radius: 6px; border: 1px dashed var(--border); background: transparent; color: var(--muted); font-size: 0.8rem; font-family: 'Helvetica', sans-serif; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 6px; }
  .btn-add-article:hover { border-color: var(--accent2); color: var(--accent2); background: rgba(0,133,133,.05); }
  .btn-add-extra { margin-top: 4px; width: 100%; padding: 8px; border-radius: 6px; border: 1px dashed var(--border); background: var(--surface2); color: var(--text); font-size: 0.8rem; font-family: 'Helvetica', sans-serif; cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 6px; }

  /* ── Label Preview (105×150 mm) ── */
  .label-preview-wrap { display: flex; flex-direction: column; }
  .label-preview-wrap .preview-label { font-family: 'Helvetica', monospace; font-size: 0.68rem; color: var(--muted); text-transform: uppercase; letter-spacing: .05em; margin-bottom: 8px; }

  .label-105-150 {
    width: 105mm;
    height: 150mm;
    background: #fff;
    border-radius: 6px;
    padding: 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    flex-shrink: 0;
    position: relative;
    overflow: hidden;
  }
  .label-top { display: flex; flex-direction: column; gap: 4px; margin-top: 0; }
  .label-rdc, .label-po-num { font-family: 'Helvetica', sans-serif; font-size: 1.5rem; font-weight: 800; color: #111; line-height: 1; text-align: center;}
  .label-po-num { font-size: 0.8rem;  line-height: 1.5; text-align: left;}
  .label-numAndrdc { display: flex; justify-content: space-between;  }
  .label-divider { border: none; border-top: 1px solid #000000; margin: 0; }
  .label-area { font-family: 'Helvetica', monospace; font-size: 0.75rem; color: #888; text-transform: uppercase; letter-spacing: .08em; }
  .label-desc { font-family: 'Helvetica', sans-serif; font-size: 1.5rem; font-weight: 500; color: #111; line-height: 1.3; word-break: break-word; }
  .label-bottom { display: flex; flex-direction: column; gap: 14px; }
  .label-fields { display: flex; flex-direction: column; gap: 6px; }
  .label-field { display: flex; justify-content: space-between; align-items: baseline; border-bottom: 1px solid #000000; padding-bottom: 5px; }
  .label-field-key { font-family: 'Helvetica', monospace; font-size: 1rem; color: #000000; text-transform: uppercase; }
  .label-field-val { font-family: 'Helvetica', monospace; font-size: 1.4rem; color: #000000; font-weight: 500; }
  .label-qty-big { text-align: center; background: #111; border-radius: 8px; padding: 14px; }
  .label-qty-big .qty-label { font-family: 'Helvetica', monospace; font-size: 0.65rem; color: #888; text-transform: uppercase; letter-spacing: .1em; }
  .label-qty-big .qty-val { font-family: 'Helvetica', sans-serif; font-size: 2.8rem; font-weight: 800; color: #ffe000; line-height: 1; }

  /* ── Actions ── */
  .actions { padding: 16px 28px; border-top: 1px solid var(--border); display: flex; flex-direction: row; gap: 10px; }
  .btn {
    padding: 9px 20px; border-radius: 8px; font-size: 0.85rem; font-weight: 500;
    cursor: pointer; border: none; font-family: 'Helvetica', sans-serif;
    display: flex; align-items: center; gap: 6px;
  }
  .btn-primary { background: var(--accent); color: #000; height: 4rem; flex: 5;}
  .btn-primary:hover { background: #ffd060; }
  .btn-secondary { background: var(--surface2); color: var(--text); border: 1px solid var(--border); flex: 1;}
  .btn-secondary:hover { border-color: var(--accent2); color: var(--accent2); }
  .btn-ghost { background: transparent; color: var(--muted); padding: 9px 12px; }
  .btn-ghost:hover { color: var(--text); }
  .btn-ghost.active { color: var(--accent2); }
  .print-note { font-size: 0.75rem; color: var(--muted); margin-left: auto; font-family: 'Helvetica', monospace; }
  .print-copy { display: none; }

  /* ── Print styles ── */
  @media print {
    * { -webkit-print-color-adjust: exact !important; print-color-adjust: exact !important; }
    body { background: white; }
    .sidebar, header, .actions, .controls, .main-header, .rdc-tabs, .label-form, .editor-area > *:not(.label-section) { display: none !important; }
    .app { display: block; height: auto; }
    .main { display: block; }
    .label-section { display: flex !important; justify-content: center; padding: 0; margin: 0; }
    .print-hide { display: none !important; }
    .print-copy { display: block !important; }
    @page { size: 105mm 150mm; margin: 0; }
    .label-105-150 {
      width: 100mm; height: 130mm; box-shadow: none; border-radius: 0; padding: 6mm;
      page-break-after: always;
    }
    .print-copy { display: block !important; }
  }
  /* ── Label mode toggle ── */
  .label-mode-group {
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .label-mode-toggle {
    display: flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden;
  }
  .label-mode-btn {
    height: 4rem; width: 10rem; padding: 6px 14px; font-size: 0.8rem; font-family: 'Helvetica', sans-serif;
    background: var(--surface2); color: var(--muted); border: none; cursor: pointer;
  }
  .label-mode-btn.active { background: var(--accent); color: #000; font-weight: 500; }
  .label-mode-btn:hover:not(.active) { color: var(--text); }
  .hide-zero-toggle {
    margin: 0;
    white-space: nowrap;
  }
  .hide-zero-toggle input {
    width: 18px;
    height: 18px;
  }

  /* ── Box label panel ── */
  .summary-panel { flex: 1; overflow-y: auto; padding: 24px 28px; display: flex; flex-direction: column; gap: 24px; }
  .summary-controls { display: flex; flex-direction: column; gap: 16px; }
  .summary-area-tabs { display: flex; gap: 6px; flex-wrap: wrap; }
  .summary-phase-night {
    margin-top: 8px;
    font-family: 'Helvetica', monospace;
    font-size: 0.88rem;
    color: var(--text);
    line-height: 1.3;
  }
  .summary-phase-name {
    font-family: 'Helvetica', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: #000;
    margin-top: 6px;
    line-height: 1.1;
  }
  .summary-phase-tabs { margin-top: 8px; display:flex; gap:6px; }
  .summary-phase-tab {
    padding: 6px 12px; border-radius: 8px; font-family: 'Helvetica', monospace; font-size: 0.78rem;
    border: 0.1rem solid var(--border); background: var(--surface2); color: var(--muted); cursor: pointer;
  }
  .summary-phase-tab.active { background: var(--accent); color: #000; border-color: var(--accent); font-weight: 500; }
  .summary-area-tab {
    padding: 6px 14px; border-radius: 8px; font-family: 'Helvetica', monospace; font-size: 0.78rem;
    border: 0.1rem solid var(--border); background: var(--surface2); color: var(--muted); cursor: pointer;
  }
  .summary-area-tab.active { background: var(--accent); color: #000; border-color: var(--accent); font-weight: 500; }
  .summary-area-tab.has-items:not(.active) { background: rgba(78,222,128,.3); border-color: rgba(78,222,128,.4); color: var(--success); }

  /* ── Box label internals ── */
  .summary-label { justify-content: flex-start; gap: 0; padding: 6mm; }
  .summary-label-top { display: flex; flex-direction: column; gap: 4px; margin-bottom: 8px; }
  .summary-po-lines { font-family: 'Helvetica', monospace; font-size: 0.8rem; line-height: 1.5; font-weight: 800; color: #000;}
  .summary-rdc-name { font-family: 'Helvetica', sans-serif; font-size: 1.4rem; font-weight: 800; color: #000; line-height: 1.1; margin-top: 4px; }
  .summary-numAndrdc { display: flex; justify-content: space-between;  }
  .summary-area-name { font-family: 'Helvetica', sans-serif; font-size: 1rem; font-weight: 500; color: #000; text-transform: uppercase; letter-spacing: .05em; margin-bottom: 4px; }
  .summary-field { display: flex; justify-content: space-between; align-items: baseline; border-bottom: 1px solid #000; padding-bottom: 5px; }
  .summary-field-key { font-family: 'Helvetica', monospace; font-size: 1rem; color: #000; text-transform: uppercase; }
  .summary-field-val { font-family: 'Helvetica', monospace; font-size: 1.4rem; color: #000; font-weight: 500; text-align: right;}
  .summary-articles { display: flex; flex-direction: column; gap: 0; padding-top: 6px; flex: 1; overflow: hidden; }
  .summary-articles.two-col-active { padding-top: 3px; }
  .summary-article-row { display: flex; justify-content: space-between; align-items: baseline; border-bottom: 1px solid #999; padding: 4px 0; gap: 4px; }
  .summary-article-no { font-family: 'Helvetica', monospace; font-size: 0.95rem; font-weight: 500; color: #000;}
  .summary-article-qty { font-family: 'Helvetica', monospace; font-size: 1.1rem; font-weight: 700; color: #000;}
  .summary-empty { font-family: 'Helvetica', monospace; font-size: 0.8rem; color: #aaa; padding: 8px 0; }

  /* Two-column overflow layout */
  .summary-two-col { display: flex; gap: 8px; width: 100%; }
  .summary-col { flex: 1; display: flex; flex-direction: column; min-width: 0; }
  .summary-article-row.two-col { padding: 1px 0; }
  .summary-article-row.two-col .summary-article-no { font-size: 0.72rem; }
  .summary-article-row.two-col .summary-article-qty { font-size: 0.8rem; }

  /* ── Print: box label ── */
  @media print {
    .summary-panel .label-section { display: flex !important; justify-content: center; padding: 0; margin: 0; }
    #summaryPanel, #palletPanel { display: none; }
    body.print-summary #summaryPanel { display: flex !important; }
    body.print-summary .sidebar,
    body.print-summary header,
    body.print-summary .summaryActionsBar,
    body.print-summary .palletActionsBar,
    body.print-summary .summary-controls,
    body.print-summary .summary-form,
    body.print-summary .main-header { display: none !important; }
    body.print-summary .app { display: block; height: auto; }
    body.print-summary .main { display: block; }
    body.print-summary #summaryPanel { display: flex !important; padding: 0; }
    body.print-summary .summary-panel .label-section { display: flex !important; justify-content: center; }
    body.print-summary .label-105-150 { width: 100mm; height: 150mm; box-shadow: none; border-radius: 0; padding: 6mm; }

    /* ── Print: pallet label ── */
    body.print-pallet #palletPanel { display: flex !important; }
    body.print-pallet .sidebar,
    body.print-pallet header,
    body.print-pallet .summaryActionsBar,
    body.print-pallet .palletActionsBar,
    body.print-pallet .summary-controls,
    body.print-pallet .summary-form,
    body.print-pallet .main-header { display: none !important; }
    body.print-pallet .app { display: block; height: auto; }
    body.print-pallet .main { display: block; }
    body.print-pallet #palletPanel { display: flex !important; padding: 0; }
    body.print-pallet .summary-panel .label-section { display: flex !important; justify-content: center; }
    body.print-pallet .label-105-150 { width: 100mm; height: 150mm; box-shadow: none; border-radius: 0; padding: 6mm; }
    body.print-pallet #palletAreaForm { display: none !important; }
  }