:root {
  --bg: #0f0f13;
  --surface: #18181f;
  --surface2: #1e1e28;
  --border: #2a2a38;
  --accent: #f0b429;
  --accent2: #ffd166;
  --text: #e8e6f0;
  --text2: #9896a8;
  --text3: #5a5870;
  --danger: #ff6b6b;
  --success: #51cf66;
  --input-bg: #13131a;
  --radius: 10px;
  --font-head: 'Syne', sans-serif;
  --font-body: 'Lora', serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 14px; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ══ TOP NAV ══ */
.topnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  height: 56px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  flex-shrink: 0;
}
.logo-text {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.logo-text span { color: var(--accent); }
.nav-actions { display: flex; gap: 8px; align-items: center; }

/* ══ TABS ══ */
.tab-bar {
  display: flex;
  gap: 2px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 28px;
}
.tab {
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 10px 16px;
  border: none;
  background: none;
  color: var(--text3);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all 0.15s;
}
.tab:hover { color: var(--text2); }
.tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ══ LAYOUT ══ */
.workspace {
  display: grid;
  grid-template-columns: 600px 1fr;
  flex: 1;
  overflow: hidden;
}
.panel-left {
  background: var(--surface);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  height: calc(100vh - 57px - 38px);
}
.panel-right {
  background: #1a1a24;
  overflow-y: auto;
  height: calc(100vh - 57px - 38px);
  padding: 32px;
}

/* tab panes */
.tab-pane { display: none; padding: 20px; }
.tab-pane.active { display: block; }

/* ══ FORM ELEMENTS ══ */
.section { margin-bottom: 22px; }
.sec-head {
  font-family: var(--font-head);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 12px;
  padding-bottom: 7px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.sec-head-action {
  font-size: 10px;
  font-weight: 600;
  color: var(--accent);
  cursor: pointer;
  letter-spacing: 0.05em;
  background: none;
  border: none;
  font-family: var(--font-head);
  padding: 0;
}

.field { margin-bottom: 10px; }
.field label {
  display: block;
  font-family: var(--font-head);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text3);
  margin-bottom: 5px;
}
input[type="text"],
input[type="number"],
input[type="date"],
input[type="email"],
input[type="tel"],
input[type="color"],
textarea,
select {
  width: 100%;
  padding: 9px 12px;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 7px;
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text);
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(240,180,41,0.10);
}
select option { background: var(--surface2); }
textarea { resize: vertical; min-height: 64px; }
input[readonly] { color: var(--text3); cursor: default; }
input[type="color"] { padding: 4px 6px; height: 36px; cursor: pointer; }

.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.row3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; }

/* ══ LOGO UPLOAD ══ */
.logo-drop {
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 18px;
  text-align: center;
  cursor: pointer;
  position: relative;
  transition: all 0.2s;
}
.logo-drop:hover { border-color: var(--accent); background: rgba(240,180,41,0.04); }
.logo-drop input { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%; }
.logo-drop-label { font-size: 12px; color: var(--text3); font-family: var(--font-head); }
.logo-drop-label b { display: block; color: var(--text2); font-size: 13px; margin-bottom: 3px; }
#thumbImg { max-height: 50px; display: none; margin: 0 auto 8px; border-radius: 4px; }

/* ══ ITEMS TABLE ══ */
.items-wrap { overflow-x: auto; }
.items-tbl { width: 100%; border-collapse: collapse; font-size: 12px; min-width: 500px; }
.items-tbl th {
  background: var(--input-bg);
  padding: 7px 6px;
  font-family: var(--font-head);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text3);
  border-bottom: 1px solid var(--border);
  text-align: left;
  white-space: nowrap;
}
.items-tbl td { padding: 4px 3px; border-bottom: 1px solid rgba(42,42,56,0.6); vertical-align: middle; }
.items-tbl input, .items-tbl select { padding: 6px 7px; font-size: 12px; border-radius: 6px; }
.items-tbl input[type="number"] { text-align: right; }
.disc-type-toggle {
  display: flex;
  gap: 3px;
  align-items: center;
}
.disc-type-btn {
  font-family: var(--font-head);
  font-size: 9px;
  font-weight: 700;
  padding: 3px 6px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: none;
  color: var(--text3);
  cursor: pointer;
  transition: all 0.1s;
  white-space: nowrap;
}
.disc-type-btn.active { background: var(--accent); color: #000; border-color: var(--accent); }
.del-row-btn {
  background: none;
  border: none;
  color: var(--text3);
  cursor: pointer;
  font-size: 17px;
  line-height: 1;
  padding: 2px 5px;
  border-radius: 4px;
  transition: all 0.15s;
}
.del-row-btn:hover { color: var(--danger); background: rgba(255,107,107,0.1); }

/* ══ TAX ROWS ══ */
.tax-row {
  display: grid;
  grid-template-columns: 1fr 80px 32px;
  gap: 6px;
  align-items: center;
  margin-bottom: 7px;
}
.tax-row input { margin: 0; }
.remove-tax {
  background: none;
  border: none;
  color: var(--text3);
  cursor: pointer;
  font-size: 16px;
  padding: 0;
  border-radius: 4px;
  height: 34px;
  width: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}
.remove-tax:hover { color: var(--danger); background: rgba(255,107,107,0.1); }

/* ══ SIGNATURE PAD ══ */
.sig-pad-wrap {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  background: #0d0d14;
}
#sigCanvas { display: block; width: 100%; height: 90px; cursor: crosshair; }
.sig-actions { display: flex; gap: 6px; padding: 6px 8px; background: var(--input-bg); border-top: 1px solid var(--border); }

/* ══ TEMPLATE PICKER ══ */
.template-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.tpl-card {
  border: 2px solid var(--border);
  border-radius: 8px;
  padding: 10px 8px;
  cursor: pointer;
  text-align: center;
  transition: all 0.15s;
  background: var(--input-bg);
}
.tpl-card:hover { border-color: var(--accent); }
.tpl-card.active { border-color: var(--accent); background: rgba(240,180,41,0.06); }
.tpl-thumb {
  width: 100%;
  aspect-ratio: 3/4;
  border-radius: 4px;
  margin-bottom: 6px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  gap: 3px;
  padding: 5px;
}
.tpl-name {
  font-family: var(--font-head);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text2);
  text-transform: uppercase;
}

/* ══ STATUS BADGE ══ */
.status-selector { display: flex; gap: 8px; flex-wrap: wrap; }
.status-btn {
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 6px 14px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: none;
  color: var(--text3);
  cursor: pointer;
  transition: all 0.15s;
}
.status-btn[data-val="unpaid"].active  { background: rgba(255,107,107,0.15); color: #ff6b6b; border-color: #ff6b6b; }
.status-btn[data-val="paid"].active    { background: rgba(81,207,102,0.15); color: #51cf66; border-color: #51cf66; }
.status-btn[data-val="partial"].active { background: rgba(240,180,41,0.15); color: var(--accent); border-color: var(--accent); }
.status-btn[data-val="draft"].active   { background: rgba(152,150,168,0.15); color: var(--text2); border-color: var(--text2); }

/* ══ CATALOG ══ */
.catalog-list { max-height: 150px; overflow-y: auto; margin-bottom: 8px; }
.catalog-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 10px;
  background: var(--input-bg);
  border-radius: 6px;
  margin-bottom: 5px;
  font-size: 12px;
  cursor: pointer;
  transition: background 0.1s;
  border: 1px solid var(--border);
}
.catalog-item:hover { background: rgba(240,180,41,0.06); border-color: var(--accent); }
.catalog-item-name { font-weight: 500; color: var(--text); }
.catalog-item-price { color: var(--accent); font-weight: 600; font-size: 12px; }
.catalog-del { background: none; border: none; color: var(--text3); cursor: pointer; font-size: 14px; padding: 0 3px; }
.catalog-del:hover { color: var(--danger); }

/* ══ BUTTONS ══ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  border: none;
  cursor: pointer;
  transition: all 0.15s;
  text-decoration: none;
}
.btn-ghost {
  background: var(--surface2);
  color: var(--text2);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: var(--border); color: var(--text); }
.btn-accent {
  background: var(--accent);
  color: #000;
}
.btn-accent:hover { background: var(--accent2); }
.btn-danger {
  background: rgba(255,107,107,0.12);
  color: var(--danger);
  border: 1px solid rgba(255,107,107,0.3);
}
.btn-danger:hover { background: rgba(255,107,107,0.2); }
.btn-sm { padding: 5px 10px; font-size: 11px; }
.btn-full { width: 100%; justify-content: center; }

.action-bar {
  display: flex;
  gap: 8px;
  padding: 12px 20px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}

/* ══ PREVIEW PANEL ══ */
.preview-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.preview-label {
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text3);
  display: flex;
  align-items: center;
  gap: 6px;
}
.live-dot {
  width: 7px; height: 7px;
  background: var(--success);
  border-radius: 50%;
  animation: blink 2s infinite;
}
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.2} }

/* ══ INVOICE PREVIEW ══ */
#invoicePreview {
  max-width: 680px;
  margin: 0 auto;
  background: white;
  box-shadow: 0 20px 60px rgba(0,0,0,0.5);
  font-family: var(--font-body);
  color: #1a1a1a;
  position: relative;
  overflow: hidden;
  /* template-specific vars */
  --t-accent: #c0392b;
}

/* TEMPLATE: Classic */
.tpl-classic #inv-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 40px 44px 28px;
  border-bottom: 3px solid var(--t-accent);
}
.tpl-classic .inv-logo { max-height: 60px; max-width: 140px; object-fit: contain; display: none; }
.tpl-classic .inv-from-name {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 800;
  color: #1a1a1a;
}
.tpl-classic .inv-word {
  font-family: var(--font-head);
  font-size: 40px;
  font-weight: 800;
  color: var(--t-accent);
  letter-spacing: -1px;
  text-align: right;
  line-height: 1;
  margin-bottom: 8px;
}
.tpl-classic .inv-meta { font-size: 12px; color: #555; line-height: 1.9; text-align: right; }
.tpl-classic .inv-meta b { color: #1a1a1a; font-weight: 600; }
.tpl-classic .inv-body { padding: 28px 44px 36px; }
.tpl-classic .inv-parties {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
  margin-bottom: 28px;
}
.tpl-classic .party-label {
  font-family: var(--font-head);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--t-accent);
  margin-bottom: 5px;
}
.tpl-classic .party-name { font-size: 14px; font-weight: 600; color: #1a1a1a; margin-bottom: 3px; }
.tpl-classic .party-detail { font-size: 11px; color: #555; line-height: 1.7; }

/* TEMPLATE: Modern */
.tpl-modern #inv-header {
  background: var(--t-accent);
  padding: 36px 44px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}
.tpl-modern .inv-logo { max-height: 54px; max-width: 130px; object-fit: contain; display: none; filter: brightness(0) invert(1); }
.tpl-modern .inv-from-name {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 800;
  color: white;
}
.tpl-modern .inv-word {
  font-family: var(--font-head);
  font-size: 36px;
  font-weight: 800;
  color: rgba(255,255,255,0.25);
  letter-spacing: -1px;
  text-align: right;
  margin-bottom: 8px;
}
.tpl-modern .inv-meta { font-size: 12px; color: rgba(255,255,255,0.75); line-height: 1.9; text-align: right; }
.tpl-modern .inv-meta b { color: white; }
.tpl-modern .inv-body { padding: 28px 44px 36px; }
.tpl-modern .inv-parties {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
  margin-bottom: 28px;
}
.tpl-modern .party-label {
  font-family: var(--font-head);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--t-accent);
  margin-bottom: 5px;
}
.tpl-modern .party-name { font-size: 14px; font-weight: 600; color: #1a1a1a; margin-bottom: 3px; }
.tpl-modern .party-detail { font-size: 11px; color: #555; line-height: 1.7; }

/* TEMPLATE: Minimal */
.tpl-minimal #inv-header {
  padding: 48px 52px 24px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  border-bottom: 1px solid #e0e0e0;
}
.tpl-minimal .inv-logo { max-height: 52px; max-width: 130px; object-fit: contain; display: none; }
.tpl-minimal .inv-from-name {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: #111;
  letter-spacing: -0.3px;
}
.tpl-minimal .inv-word {
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #999;
  text-align: right;
  margin-bottom: 10px;
}
.tpl-minimal .inv-meta { font-size: 12px; color: #666; line-height: 2; text-align: right; }
.tpl-minimal .inv-meta b { color: #111; font-weight: 600; }
.tpl-minimal .inv-body { padding: 24px 52px 44px; }
.tpl-minimal .inv-parties {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
  margin-bottom: 28px;
}
.tpl-minimal .party-label {
  font-family: var(--font-head);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #999;
  margin-bottom: 5px;
}
.tpl-minimal .party-name { font-size: 14px; font-weight: 600; color: #111; margin-bottom: 3px; }
.tpl-minimal .party-detail { font-size: 11px; color: #666; line-height: 1.7; }

/* ── Shared invoice internals ── */
.inv-table { width: 100%; border-collapse: collapse; margin-bottom: 20px; font-size: 12.5px; }
.inv-table thead tr { background: #1a1a1a; }
.tpl-modern .inv-table thead tr { background: var(--t-accent); }
.tpl-minimal .inv-table thead tr { background: #f5f5f5; }
.inv-table th {
  padding: 9px 10px;
  text-align: left;
  font-family: var(--font-head);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: white;
}
.tpl-minimal .inv-table th { color: #555; }
.inv-table th:not(:first-child) { text-align: center; }
.inv-table th:last-child { text-align: right; }
.inv-table td {
  padding: 9px 10px;
  border-bottom: 1px solid #f0f0f0;
  color: #1a1a1a;
  font-size: 12px;
}
.inv-table td:not(:first-child) { text-align: center; }
.inv-table td:last-child { text-align: right; font-weight: 600; }
.inv-table tr:nth-child(even) td { background: #fafafa; }
.inv-item-name { font-weight: 600; font-size: 13px; }
.inv-item-desc { font-size: 11px; color: #888; font-style: italic; }

.inv-bottom { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; }

.inv-notes-box {
  flex: 1;
  background: #fafafa;
  border-left: 3px solid var(--t-accent);
  padding: 12px 14px;
  border-radius: 0 6px 6px 0;
  font-size: 11.5px;
  color: #555;
  line-height: 1.7;
  display: none;
}
.inv-notes-title { font-family: var(--font-head); font-size: 10px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: #333; margin-bottom: 5px; }

.inv-bank-box {
  flex: 1;
  font-size: 11px;
  color: #555;
  line-height: 1.8;
  display: none;
}
.inv-bank-title { font-family: var(--font-head); font-size: 10px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: #333; margin-bottom: 5px; }
.inv-bank-row { display: flex; gap: 4px; }
.inv-bank-key { font-weight: 600; color: #333; min-width: 60px; }

.inv-totals-box { min-width: 200px; }
.inv-totals-tbl { width: 100%; font-size: 12.5px; }
.inv-totals-tbl td { padding: 4px 0; color: #555; }
.inv-totals-tbl td:last-child { text-align: right; color: #111; font-weight: 500; }
.inv-grand-row td { border-top: 2px solid #1a1a1a; padding-top: 8px !important; font-size: 15px !important; font-weight: 700 !important; color: #1a1a1a !important; }
.tpl-modern .inv-grand-row td { border-color: var(--t-accent); color: var(--t-accent) !important; }

.inv-sig-block { margin-top: 28px; display: flex; justify-content: flex-end; }
.inv-sig-inner { text-align: center; min-width: 160px; }
.inv-sig-img { max-height: 52px; max-width: 160px; display: none; margin: 0 auto 6px; }
.inv-sig-line { border-top: 1px solid #ccc; padding-top: 6px; font-size: 11px; color: #888; font-family: var(--font-head); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; }

/* STATUS STAMP */
.inv-stamp {
  position: absolute;
  top: 60px;
  right: 44px;
  display: none;
  transform: rotate(12deg);
  pointer-events: none;
  z-index: 10;
}
.inv-stamp-inner {
  border: 3px solid #ccc;
  border-radius: 6px;
  padding: 6px 14px;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #ccc;
  opacity: 0.55;
}
.stamp-paid .inv-stamp-inner { border-color: #27ae60; color: #27ae60; }
.stamp-unpaid .inv-stamp-inner { border-color: #e74c3c; color: #e74c3c; }
.stamp-partial .inv-stamp-inner { border-color: #f39c12; color: #f39c12; }

.inv-footer {
  padding: 16px 44px;
  border-top: 1px solid #eee;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.inv-footer-text { font-size: 11px; color: #aaa; font-style: italic; }
.inv-qr { display: none; }
.inv-qr img { width: 56px; height: 56px; }

/* QR modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 999;
  align-items: center;
  justify-content: center;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 28px;
  width: 320px;
  text-align: center;
}
.modal h3 { font-family: var(--font-head); font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.modal p { font-size: 12px; color: var(--text2); margin-bottom: 16px; }
#qrOutput { display: flex; justify-content: center; margin-bottom: 16px; }
#qrOutput canvas, #qrOutput img { border-radius: 8px; border: 4px solid white; }
.modal-close { margin-top: 8px; }

/* ══ SCROLLBAR ══ */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ══ TOOLTIP ══ */
[data-tip] { position: relative; }
[data-tip]:hover::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: #000;
  color: #fff;
  font-size: 11px;
  padding: 4px 8px;
  border-radius: 4px;
  white-space: nowrap;
  pointer-events: none;
  z-index: 99;
}

/* ══ INVOICE FORMAT BUILDER ══ */
.fmt-chip {
  font-family: var(--font-head);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .05em;
  padding: 4px 9px;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--accent);
  cursor: pointer;
  transition: all .15s;
  white-space: nowrap;
}
.fmt-chip:hover { background: var(--accent); color: #000; border-color: var(--accent); }
.fmt-preset {
  font-family: var(--font-head);
  font-size: 10px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 5px;
  border: 1px solid var(--border);
  background: none;
  color: var(--text2);
  cursor: pointer;
  margin: 2px 3px 2px 0;
  transition: all .15s;
}
.fmt-preset:hover { border-color: var(--accent); color: var(--accent); }

/* ══ UPI SECTION ══ */
.upi-mode-btn {
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .04em;
  padding: 7px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: none;
  color: var(--text3);
  cursor: pointer;
  transition: all .15s;
  flex: 1;
}
.upi-mode-btn.active { background: var(--accent); color: #000; border-color: var(--accent); }
.app-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-family: var(--font-head);
  font-size: 11px;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text2);
  cursor: pointer;
  transition: all .15s;
}
.app-btn:hover { border-color: var(--accent); color: var(--accent); background: rgba(240,180,41,.06); }

/* ══ INVOICE QR LABEL IN PREVIEW ══ */
.inv-qr-label { font-size: 9px; color: #888; font-family: var(--font-head); font-weight: 700; letter-spacing: .1em; text-transform: uppercase; margin-top: 5px; }

@media print {
  .topnav, .tab-bar, .panel-left, .preview-top { display: none !important; }
  .workspace { grid-template-columns: 1fr; }
  .panel-right { height: auto; padding: 0; }
  #invoicePreview { box-shadow: none; max-width: 100%; }
}