:root{
  --paper:#F4F0E4; --paper-card:#FFFDF7; --ink:#221F1A; --ink-soft:#6B6459;
  --line:#D9D1BE; --stamp:#C1440E; --stamp-dark:#9B350A; --duplex:#2F6F62;
  --duplex-soft:#E5EFEC; --simplex-soft:#F6E9E2; --danger:#B23A2F;
  --shadow: 0 1px 0 rgba(34,31,26,0.04), 0 8px 20px -12px rgba(34,31,26,0.25);
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:
    radial-gradient(circle at 1px 1px, rgba(34,31,26,0.05) 1px, transparent 0) 0 0/14px 14px,
    var(--paper);
  color:var(--ink); font-family:'IBM Plex Mono', monospace; min-height:100vh; padding:28px 16px 60px;
}
.wrap{ max-width:980px; margin:0 auto; }

header{ display:flex; align-items:flex-end; justify-content:space-between; gap:16px; flex-wrap:wrap; margin-bottom:22px; border-bottom:2px solid var(--ink); padding-bottom:14px; }
h1{ font-family:'Space Grotesk',sans-serif; font-size:22px; font-weight:700; margin:0; text-transform:uppercase; }
.tagline{ font-size:11.5px; color:var(--ink-soft); margin-top:2px; }
nav.top-links{ font-size:12px; }
nav.top-links a{ color:var(--ink-soft); text-decoration:none; border-bottom:1px dashed var(--ink-soft); margin-left:14px; }
nav.top-links a:hover{ color:var(--stamp); border-color:var(--stamp); }

.panel{ background:var(--paper-card); border:1px solid var(--line); border-radius:8px; box-shadow:var(--shadow); }
.section-label{ font-family:'Space Grotesk',sans-serif; font-size:12px; font-weight:700; text-transform:uppercase; letter-spacing:0.08em; color:var(--ink-soft); }

.field label{ display:block; font-size:10.5px; color:var(--ink-soft); text-transform:uppercase; letter-spacing:0.05em; margin-bottom:5px; }
.field input, .field select{ width:100%; font-family:'IBM Plex Mono',monospace; font-size:14px; font-weight:600; padding:8px 9px; border:1.5px solid var(--ink); border-radius:5px; background:#fff; color:var(--ink); }
.field input:focus, .field select:focus{ outline:2px solid var(--stamp); outline-offset:1px; }

.btn{ font-family:'Space Grotesk',sans-serif; font-weight:600; font-size:13px; border-radius:6px; padding:11px 16px; border:2px solid var(--ink); background:var(--paper-card); color:var(--ink); cursor:pointer; display:inline-flex; align-items:center; gap:8px; text-decoration:none; }
.btn:hover{ box-shadow:0 3px 0 var(--ink); transform:translateY(-2px); }
.btn-primary{ background:var(--stamp); border-color:var(--stamp-dark); color:#fff; }
.btn-primary:hover{ box-shadow:0 3px 0 var(--stamp-dark); }
.btn-ghost{ border-style:dashed; }
.btn-danger{ color:var(--danger); border-color:var(--line); margin-left:auto; }
.btn-danger:hover{ border-color:var(--danger); box-shadow:0 3px 0 var(--danger); }
.btn:disabled{ opacity:0.5; cursor:not-allowed; pointer-events:none; }

table.list-table{ width:100%; border-collapse:collapse; font-size:13px; }
table.list-table th{ text-align:left; font-family:'Space Grotesk',sans-serif; font-size:11px; text-transform:uppercase; letter-spacing:0.05em; color:var(--ink-soft); padding:8px 10px; border-bottom:2px solid var(--ink); }
table.list-table td{ padding:9px 10px; border-bottom:1px dashed var(--line); }
table.list-table tr:hover td{ background:rgba(193,68,14,0.04); }

/* ---- Calculator layout ---- */
.layout{ display:grid; grid-template-columns:1.55fr 1fr; gap:20px; align-items:start; }
@media (max-width:760px){ .layout{ grid-template-columns:1fr; } }
.rates{ padding:16px 18px; margin-bottom:18px; }
.rates-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:12px; }
.rates-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:12px; }
@media (max-width:520px){ .rates-grid{ grid-template-columns:1fr 1fr; } }
.rate-hint{ font-size:10px; color:var(--ink-soft); margin-top:8px; line-height:1.5; }
.settings-divider{ border:none; border-top:1.5px dashed var(--line); margin:16px 0; }
.sides-panel{ padding:14px 18px; margin-bottom:14px; }
.global-sides-toggle{ display:flex; gap:10px; }
.side-btn{ flex:1; font-family:'Space Grotesk',sans-serif; font-weight:700; font-size:14px; padding:13px 10px; border:2px solid var(--ink); border-radius:7px; background:#fff; color:var(--ink-soft); cursor:pointer; }
.side-btn.active{ background:var(--stamp); border-color:var(--stamp-dark); color:#fff; }
.bulk-enable-toggle{ display:flex; align-items:center; gap:6px; font-size:11px; color:var(--ink-soft); text-transform:uppercase; }
.bulk-status-row{ font-size:11px; color:var(--ink-soft); text-transform:uppercase; letter-spacing:0.05em; display:flex; align-items:center; gap:8px; margin-top:8px; }
.bulk-status{ display:inline-block; font-family:'IBM Plex Mono',monospace; font-weight:600; font-size:12.5px; text-transform:none; letter-spacing:normal; padding:6px 10px; border:1.5px solid var(--line); border-radius:5px; background:#F0ECE0; color:var(--ink-soft); line-height:1.3; }
.bulk-status.active{ border-color:var(--stamp); background:var(--simplex-soft); color:var(--stamp-dark); }

.add-row{ display:flex; gap:10px; margin-bottom:18px; flex-wrap:wrap; }
.doc-list{ display:flex; flex-direction:column; gap:12px; }
.empty-state{ padding:36px 18px; text-align:center; color:var(--ink-soft); border:1.5px dashed var(--line); border-radius:8px; font-size:13px; background:var(--paper-card); }
.empty-state .big{ font-family:'Space Grotesk',sans-serif; font-size:15px; color:var(--ink); font-weight:600; margin-bottom:4px; }

.doc-card{ background:var(--paper-card); border:1px solid var(--line); border-left:4px solid var(--ink); border-radius:7px; padding:13px 15px; box-shadow:var(--shadow); }
.doc-card.simplex{ border-left-color:var(--stamp); }
.doc-card.duplex{ border-left-color:var(--duplex); }
.doc-top{ display:flex; align-items:flex-start; justify-content:space-between; gap:10px; margin-bottom:10px; }
.doc-name{ width:100%; border:none; background:transparent; font-family:'Space Grotesk',sans-serif; font-weight:600; font-size:14.5px; color:var(--ink); padding:2px 0; border-bottom:1px solid transparent; }
.doc-name:focus{ outline:none; border-bottom:1px solid var(--ink); }
.doc-source{ font-size:10px; text-transform:uppercase; color:var(--ink-soft); margin-top:1px; }
.remove-btn{ flex:none; width:26px;height:26px; border-radius:50%; border:1.5px solid var(--line); background:#fff; color:var(--ink-soft); cursor:pointer; }
.remove-btn:hover{ border-color:var(--danger); color:var(--danger); }
.doc-controls{ display:flex; flex-wrap:wrap; gap:12px 16px; align-items:end; }
.pages-field, .copies-field{ width:90px; }
.rate-mini{ display:flex; align-items:center; gap:4px; background:#fff; border:1.5px solid var(--ink); border-radius:5px; padding:2px 4px 2px 7px; }
.rate-mini input{ width:52px; border:none; background:transparent; font-family:'IBM Plex Mono',monospace; font-size:13px; font-weight:600; padding:6px 0; }
.rate-mini input:focus{ outline:none; }
.rate-mini-label{ font-size:9.5px; color:var(--ink-soft); }
.sides-toggle{ display:inline-flex; border:1.5px solid var(--ink); border-radius:6px; overflow:hidden; }
.sides-toggle button{ font-size:11.5px; font-weight:600; padding:8px 10px; border:none; background:#fff; color:var(--ink-soft); cursor:pointer; }
.sides-toggle button.active{ background:var(--simplex-soft); color:var(--stamp-dark); }
.doc-cost{ text-align:right; min-width:96px; margin-left:auto; }
.doc-cost .amt{ font-family:'Space Grotesk',sans-serif; font-weight:700; font-size:16px; }
.doc-cost .meta{ font-size:9.5px; color:var(--ink-soft); margin-top:2px; }

/* ---- Receipt ---- */
.receipt-sticky{ position:sticky; top:20px; }
.receipt{ background:var(--paper-card); border:1px solid var(--line); box-shadow:var(--shadow); border-radius:10px; padding:22px 20px; position:relative; }
.receipt-head{ text-align:center; margin-bottom:14px; }
.receipt-head .shop-name{ font-family:'Space Grotesk',sans-serif; font-weight:800; font-size:20px; }
.receipt-head .shop-address, .receipt-head .shop-contact{ font-size:11px; color:var(--ink-soft); line-height:1.5; }
.receipt-dash{ border:none; border-top:1.5px dashed var(--line); margin:12px 0; }
.inv-badge{ text-align:center; font-family:'Space Grotesk',sans-serif; font-weight:700; font-size:13px; letter-spacing:0.05em; color:var(--stamp-dark); margin-bottom:6px; }

.rt-header-row{ display:flex; gap:6px; padding-bottom:6px; border-bottom:2px solid var(--ink); font-size:9.5px; font-weight:700; text-transform:uppercase; color:var(--ink-soft); }
.rt-h-no{ width:16px; } .rt-h-desc{ flex:1; } .rt-h-qty{ width:26px; text-align:right; } .rt-h-rate{ width:60px; text-align:right; } .rt-h-total{ width:56px; text-align:right; }
.rt-item{ padding:7px 0; border-bottom:1px dashed var(--line); }
.rt-item-desc{ font-size:12.5px; font-weight:600; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.rt-item-meta{ font-size:9.5px; color:var(--ink-soft); margin-top:2px; }
.rt-item-row2{ display:flex; gap:6px; margin-top:4px; align-items:baseline; }
.rt-item-no{ width:16px; font-size:10.5px; color:var(--ink-soft); }
.rt-item-qty{ width:26px; text-align:right; font-size:10.5px; font-weight:600; color:var(--ink-soft); }
.rt-item-qty.qty-multi{ color:var(--stamp-dark); }
.rt-item-rate{ width:60px; text-align:right; font-size:10px; font-weight:600; color:var(--ink-soft); }
.rt-item-total{ width:56px; text-align:right; font-size:12px; font-weight:700; }

.receipt-line{ display:flex; justify-content:space-between; font-size:12px; padding:3px 0; color:var(--ink-soft); }
.receipt-line .val{ color:var(--ink); font-weight:600; }
.bulk-savings-line{ display:flex; justify-content:space-between; gap:10px; background:var(--simplex-soft); border-radius:5px; padding:6px 8px; margin-top:4px; color:var(--stamp-dark); font-weight:600; }
.grand-total{ display:flex; justify-content:space-between; align-items:center; margin-top:10px; padding:10px 12px; border-radius:6px; background:linear-gradient(135deg, var(--stamp) 0%, var(--stamp-dark) 100%); }
.grand-total .label{ font-family:'Space Grotesk',sans-serif; font-weight:800; font-size:14px; text-transform:uppercase; color:#fff; }
.grand-total .value{ font-family:'Space Grotesk',sans-serif; font-weight:700; font-size:22px; color:#fff; }
.receipt-foot-note{ text-align:center; font-size:9.5px; color:var(--ink-soft); margin-top:14px; }
.checkout-btn{ width:100%; justify-content:center; margin-top:14px; }

.invoice-actions{ max-width:380px; margin:16px auto 0; display:flex; gap:10px; }
.invoice-actions .btn{ flex:1; justify-content:center; }
.receipt-view{ max-width:380px; margin:0 auto; }

/* ---- Scroll nav ---- */
.scroll-nav{ position:fixed; right:20px; bottom:20px; display:flex; flex-direction:column; gap:8px; z-index:50; }
.scroll-nav-btn{ width:42px;height:42px; border-radius:50%; border:2px solid var(--ink); background:var(--paper-card); color:var(--ink); font-size:15px; cursor:pointer; box-shadow:var(--shadow); }
.scroll-nav-btn:hover{ background:var(--stamp); border-color:var(--stamp-dark); color:#fff; }

@media print{
  header, nav, .main-col, .btn-print, .invoice-actions, .scroll-nav, .checkout-btn, .receipt-actions{ display:none !important; }
  html, body{
    background:#fff !important;
    padding:0 !important;
    -webkit-print-color-adjust:exact;
    print-color-adjust:exact;
  }
  .wrap{ max-width:none !important; margin:0 !important; padding:0 !important; }
  .layout{ display:block !important; }
  .receipt-sticky{ position:static !important; max-width:88mm !important; margin:0 auto !important; }
  .receipt, .receipt-view{
    background:#fff !important;
    box-shadow:none !important;
    border:none !important;
    max-width:none !important;
    width:100% !important;
    margin:0 !important;
    padding:0 2mm 6px 0 !important;
    border-radius:0 !important;
  }
  .grand-total{ background:none !important; border:2px solid #000 !important; }
  .grand-total .label, .grand-total .value{ color:#000 !important; }
  @page{ size:88mm auto; margin:3mm 3mm 3mm 1mm; }
}