/* ═══════════════════════════════════════════════
   Biashara Invoice & Quotation Generator
   Main Stylesheet
   Brand: Black / White / #fec63f (Gold)
═══════════════════════════════════════════════ */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@500;700&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── Variables ── */
:root {
  --black:      #0a0a0a;
  --black-soft: #1a1a1a;
  --black-mid:  #2a2a2a;
  --gold:       #fec63f;
  --gold-dark:  #e5a800;
  --gold-light: #fff3cc;
  --white:      #ffffff;
  --gray-50:    #fafafa;
  --gray-100:   #f4f4f5;
  --gray-200:   #e4e4e7;
  --gray-300:   #d4d4d8;
  --gray-400:   #a1a1aa;
  --gray-500:   #71717a;
  --gray-600:   #52525b;
  --gray-700:   #3f3f46;
  --danger:     #ef4444;
  --success:    #22c55e;

  --font-display: 'Playfair Display', Georgia, serif;
  --font-body:    'DM Sans', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  24px;

  --shadow-sm:  0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md:  0 4px 16px rgba(0,0,0,.1);
  --shadow-lg:  0 12px 40px rgba(0,0,0,.14);
  --shadow-paper: 0 2px 8px rgba(0,0,0,.08), 0 8px 32px rgba(0,0,0,.06);

  --transition: 180ms cubic-bezier(.4,0,.2,1);
  --header-h:   62px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
  color: var(--black);
  background: var(--gray-100);
  min-height: 100vh;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea, select {
  font-family: inherit;
  font-size: 14px;
  outline: none;
  border: none;
  background: none;
}
a { text-decoration: none; color: inherit; }
::selection { background: var(--gold); color: var(--black); }

/* ══════════════════════════════════════════════
   HEADER
══════════════════════════════════════════════ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--header-h);
  background: var(--black);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 12px;
  z-index: 100;
  border-bottom: 2px solid var(--gold);
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 36px; height: 36px;
  background: var(--gold);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: 20px; font-weight: 700;
  color: var(--black);
  line-height: 1;
}
.brand-info { display: flex; flex-direction: column; gap: 0; }
.brand-name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--white);
  line-height: 1.1;
}
.brand-tag {
  font-size: 10px;
  color: var(--gold);
  letter-spacing: .06em;
  text-transform: uppercase;
  font-weight: 500;
  line-height: 1;
}

/* Doc-type tabs */
.doc-tabs {
  display: flex;
  align-items: center;
  background: var(--black-soft);
  border-radius: var(--radius-md);
  padding: 3px;
  gap: 2px;
  margin: 0 auto;
}
.doc-tab {
  display: flex; align-items: center; gap: 6px;
  padding: 6px 14px;
  border-radius: 7px;
  font-size: 13px;
  font-weight: 500;
  color: var(--gray-400);
  transition: var(--transition);
  white-space: nowrap;
}
.doc-tab svg { width: 14px; height: 14px; flex-shrink: 0; }
.doc-tab:hover { color: var(--white); }
.doc-tab.active {
  background: var(--gold);
  color: var(--black);
  font-weight: 600;
}

/* Header actions */
.header-actions {
  display: flex; align-items: center; gap: 8px; flex-shrink: 0;
}

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font-body);
  transition: var(--transition);
  white-space: nowrap;
  line-height: 1;
}
.btn svg { width: 15px; height: 15px; flex-shrink: 0; }

.btn-ghost {
  color: var(--gray-300);
  padding: 8px 12px;
}
.btn-ghost:hover { color: var(--white); background: var(--black-soft); }

.btn-outline {
  color: var(--gray-300);
  border: 1px solid var(--gray-700);
  padding: 7px 14px;
}
.btn-outline:hover { color: var(--white); border-color: var(--gray-500); }

.btn-primary {
  background: var(--gold);
  color: var(--black);
  font-weight: 700;
}
.btn-primary:hover {
  background: var(--gold-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(254,198,63,.4);
}
.btn-primary:active { transform: translateY(0); }

.btn-danger {
  background: var(--danger);
  color: var(--white);
}
.btn-danger:hover { background: #dc2626; }

.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-icon { padding: 8px; width: 36px; height: 36px; justify-content: center; }

/* ══════════════════════════════════════════════
   MAIN LAYOUT
══════════════════════════════════════════════ */
.main-wrap {
  display: grid;
  grid-template-columns: minmax(0, 480px) minmax(0, 1fr);
  gap: 0;
  min-height: calc(100vh - var(--header-h));
  padding-top: var(--header-h);
}

/* ── Form Panel ── */
.form-panel {
  padding: 20px 16px 60px;
  overflow-y: auto;
  background: var(--gray-100);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ── Preview Panel ── */
.preview-panel {
  background: #e8e8e8;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 28px 20px 60px;
  overflow-y: auto;
  position: sticky;
  top: var(--header-h);
  height: calc(100vh - var(--header-h));
}
.preview-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.preview-label::before,
.preview-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--gray-300);
}

/* ══════════════════════════════════════════════
   FORM CARDS
══════════════════════════════════════════════ */
.form-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.form-card .card-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gray-400);
  padding-bottom: 8px;
  border-bottom: 1px solid var(--gray-100);
  margin-bottom: 2px;
}

/* Logo + From grid */
.logo-from-grid {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 16px;
  align-items: start;
}

/* Logo upload */
.logo-upload-area {
  width: 120px;
  height: 120px;
  border: 2px dashed var(--gray-300);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  background: var(--gray-50);
  flex-shrink: 0;
}
.logo-upload-area:hover { border-color: var(--gold); background: var(--gold-light); }
.logo-upload-area svg { width: 24px; height: 24px; color: var(--gray-400); }
.logo-upload-area span { font-size: 11px; color: var(--gray-400); font-weight: 500; text-align: center; }
.logo-upload-area img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: contain;
  padding: 8px;
}
.logo-remove-btn {
  position: absolute;
  top: 4px; right: 4px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: rgba(0,0,0,.6);
  color: var(--white);
  font-size: 12px;
  line-height: 20px;
  text-align: center;
  display: none;
}
.logo-upload-area:hover .logo-remove-btn { display: block; }

/* Input fields */
.field-group { display: flex; flex-direction: column; gap: 4px; }
.field-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--gray-500);
  text-transform: uppercase;
}
.input-field {
  width: 100%;
  padding: 9px 12px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  color: var(--black);
  background: var(--white);
  transition: border-color var(--transition);
  line-height: 1.4;
}
.input-field:focus { border-color: var(--gold); }
.input-field::placeholder { color: var(--gray-300); }
.input-field.textarea {
  resize: vertical;
  min-height: 72px;
  font-family: inherit;
}
.input-field.input-sm { padding: 7px 10px; font-size: 13px; }

/* Select */
select.input-field {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2371717a' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 32px;
  cursor: pointer;
}

/* Two-col grid for form fields */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.three-col { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 10px; }

/* Collapsible sections */
.section-toggle-header {
  display: flex; align-items: center; justify-content: space-between;
}
.toggle-add-btn {
  font-size: 12px;
  font-weight: 600;
  color: var(--gold-dark);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: var(--gold-light);
  transition: var(--transition);
}
.toggle-add-btn:hover { background: var(--gold); color: var(--black); }
.collapsible { display: none; }
.collapsible.open { display: block; }

/* ══════════════════════════════════════════════
   LINE ITEMS TABLE
══════════════════════════════════════════════ */
.items-table {
  width: 100%;
  border-collapse: collapse;
}
.items-thead th {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--gray-400);
  padding: 6px 8px;
  text-align: left;
  border-bottom: 1.5px solid var(--gray-200);
}
.items-thead th.th-qty,
.items-thead th.th-rate,
.items-thead th.th-amt { text-align: right; }
.items-thead th.th-del { width: 32px; }

.item-row td {
  padding: 5px 4px;
  vertical-align: middle;
}
.item-row .td-desc { width: 40%; }
.item-row .td-qty,
.item-row .td-rate,
.item-row .td-amt { width: 18%; }
.item-row .td-amt input,
.item-row .td-qty input,
.item-row .td-rate input { text-align: right; }
.item-row .td-del { width: 32px; text-align: center; }

.item-row input.input-field { padding: 7px 8px; }

.item-del-btn {
  width: 26px; height: 26px;
  border-radius: 6px;
  color: var(--gray-400);
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
  font-size: 16px;
  line-height: 1;
}
.item-del-btn:hover { background: #fef2f2; color: var(--danger); }

.add-item-btn {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 10px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  color: var(--gold-dark);
  border: 1.5px dashed var(--gold);
  background: var(--gold-light);
  transition: var(--transition);
}
.add-item-btn:hover { background: var(--gold); color: var(--black); border-style: solid; }
.add-item-btn svg { width: 14px; height: 14px; }

/* ══════════════════════════════════════════════
   TOTALS SECTION
══════════════════════════════════════════════ */
.totals-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}
.totals-controls .full-col { grid-column: 1 / -1; }
.inline-select-group {
  display: flex;
  gap: 6px;
  align-items: center;
}
.inline-select-group select.input-field { flex: 1; }
.inline-select-group input.input-field { width: 90px; }

.totals-display {
  border-top: 1.5px solid var(--gray-200);
  padding-top: 10px;
  margin-top: 4px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.total-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 3px 0;
  font-size: 13.5px;
  color: var(--gray-600);
}
.total-row .total-label { font-weight: 500; }
.total-row .total-value { font-family: var(--font-mono); font-size: 13px; }
.total-row.is-grand {
  padding-top: 8px;
  margin-top: 4px;
  border-top: 2px solid var(--black);
  font-size: 16px;
  font-weight: 700;
  color: var(--black);
}
.total-row.is-grand .total-value { font-size: 16px; color: var(--gold-dark); }

/* ══════════════════════════════════════════════
   INVOICE PAPER PREVIEW
══════════════════════════════════════════════ */
.invoice-paper {
  width: 100%;
  max-width: 680px;
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-paper);
  padding: 40px 44px;
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--black);
  min-height: 900px;
  position: relative;
}

/* Paper header stripe */
.paper-top-stripe {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 5px;
  background: var(--gold);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
}

/* Paper header */
.paper-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 32px;
  gap: 16px;
}
.paper-logo-area {
  max-width: 160px;
  max-height: 80px;
  overflow: hidden;
  display: flex; align-items: center;
}
.paper-logo-area img { max-height: 80px; max-width: 160px; object-fit: contain; }
.paper-logo-placeholder {
  width: 80px; height: 50px;
  border: 2px dashed var(--gray-200);
  border-radius: var(--radius-sm);
  display: flex; align-items: center; justify-content: center;
  color: var(--gray-300);
  font-size: 11px;
}

.paper-doc-info { text-align: right; }
.paper-doc-type {
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 700;
  color: var(--black);
  line-height: 1.1;
  margin-bottom: 6px;
}
.paper-doc-num {
  font-size: 12px;
  color: var(--gray-500);
  font-weight: 500;
}
.paper-doc-num span { color: var(--black); font-weight: 600; }

/* Addresses */
.paper-addresses {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}
.addr-block .addr-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 5px;
}
.addr-block .addr-name {
  font-weight: 700;
  font-size: 14px;
  color: var(--black);
  margin-bottom: 2px;
}
.addr-block p {
  color: var(--gray-600);
  font-size: 12.5px;
  line-height: 1.5;
  white-space: pre-line;
}

/* Details row */
.paper-details {
  display: flex;
  gap: 0;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 24px;
}
.detail-cell {
  flex: 1;
  padding: 10px 14px;
  border-right: 1.5px solid var(--gray-200);
}
.detail-cell:last-child { border-right: none; }
.detail-cell .dc-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 3px;
}
.detail-cell .dc-value {
  font-size: 13px;
  font-weight: 600;
  color: var(--black);
}

/* Items table (preview) */
.paper-items { width: 100%; border-collapse: collapse; margin-bottom: 20px; }
.paper-items thead tr { background: var(--black); }
.paper-items thead th {
  padding: 9px 12px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--gold);
  text-align: left;
}
.paper-items thead th.right { text-align: right; }
.paper-items tbody tr { border-bottom: 1px solid var(--gray-100); }
.paper-items tbody tr:nth-child(even) { background: var(--gray-50); }
.paper-items tbody td {
  padding: 10px 12px;
  font-size: 13px;
  color: var(--gray-700);
  vertical-align: top;
}
.paper-items tbody td.right { text-align: right; }
.paper-items tbody td.bold { font-weight: 600; color: var(--black); }
.paper-items tbody .item-desc { color: var(--gray-500); font-size: 11.5px; margin-top: 2px; }

/* Totals */
.paper-totals {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 28px;
}
.paper-totals-table {
  width: 260px;
  border-collapse: collapse;
}
.paper-totals-table tr td {
  padding: 4px 0;
  font-size: 13px;
}
.paper-totals-table .tot-label { color: var(--gray-600); }
.paper-totals-table .tot-value {
  text-align: right;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
}
.paper-totals-table tr.grand-row {
  border-top: 2px solid var(--black);
}
.paper-totals-table tr.grand-row td {
  padding-top: 8px;
  font-size: 16px;
  font-weight: 700;
}
.paper-totals-table .grand-value {
  color: var(--gold-dark);
  font-size: 17px;
}

/* Notes & Terms */
.paper-footer-notes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  border-top: 1.5px solid var(--gray-200);
  padding-top: 18px;
}
.paper-note-block .note-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 5px;
}
.paper-note-block p {
  font-size: 12px;
  color: var(--gray-600);
  white-space: pre-line;
  line-height: 1.6;
}

/* Paper watermark for empty state */
.paper-empty-hint {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--gray-300);
  pointer-events: none;
}
.paper-empty-hint svg { width: 48px; height: 48px; }
.paper-empty-hint p { font-size: 14px; font-weight: 500; }

/* ══════════════════════════════════════════════
   MODAL
══════════════════════════════════════════════ */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.6);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
}
.modal-overlay.open { opacity: 1; pointer-events: all; }

.modal-box {
  background: var(--white);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 640px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transform: translateY(16px) scale(.98);
  transition: transform 240ms cubic-bezier(.34,1.56,.64,1), opacity var(--transition);
}
.modal-overlay.open .modal-box { transform: translateY(0) scale(1); }

.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 24px 16px;
  border-bottom: 1.5px solid var(--gray-200);
  flex-shrink: 0;
}
.modal-header h2 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
}
.modal-close {
  width: 32px; height: 32px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--gray-500);
  font-size: 18px;
  transition: var(--transition);
}
.modal-close:hover { background: var(--gray-100); color: var(--black); }
.modal-body {
  padding: 16px 24px 24px;
  overflow-y: auto;
  flex: 1;
}
.modal-filter-tabs {
  display: flex; gap: 6px;
  margin-bottom: 14px;
}
.filter-tab {
  padding: 6px 14px;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-500);
  border: 1.5px solid var(--gray-200);
  transition: var(--transition);
}
.filter-tab.active { background: var(--black); color: var(--white); border-color: var(--black); }

/* History list */
.history-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1.5px solid var(--gray-100);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
  cursor: pointer;
  transition: var(--transition);
}
.history-item:hover { border-color: var(--gold); background: var(--gold-light); }
.history-badge {
  padding: 3px 8px;
  border-radius: 99px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  flex-shrink: 0;
}
.badge-invoice { background: #e0f2fe; color: #0369a1; }
.badge-quotation { background: #f0fdf4; color: #166534; }
.history-info { flex: 1; min-width: 0; }
.history-num { font-weight: 700; font-size: 13.5px; color: var(--black); }
.history-client { font-size: 12px; color: var(--gray-500); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.history-meta { text-align: right; flex-shrink: 0; }
.history-amount { font-weight: 700; font-size: 14px; color: var(--black); }
.history-date { font-size: 11px; color: var(--gray-400); }
.history-del-btn {
  width: 30px; height: 30px;
  border-radius: 6px;
  color: var(--gray-400);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 14px;
  transition: var(--transition);
}
.history-del-btn:hover { background: #fef2f2; color: var(--danger); }
.history-empty {
  text-align: center;
  padding: 40px 20px;
  color: var(--gray-400);
}
.history-empty svg { width: 40px; height: 40px; margin: 0 auto 10px; }
.history-empty p { font-size: 14px; }

/* ══════════════════════════════════════════════
   TOAST NOTIFICATION
══════════════════════════════════════════════ */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(80px);
  background: var(--black);
  color: var(--white);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 13.5px;
  font-weight: 500;
  z-index: 300;
  display: flex; align-items: center; gap: 8px;
  box-shadow: var(--shadow-lg);
  transition: transform 280ms cubic-bezier(.34,1.56,.64,1);
  white-space: nowrap;
}
.toast.show { transform: translateX(-50%) translateY(0); }
.toast.success { border-left: 4px solid var(--success); }
.toast.error   { border-left: 4px solid var(--danger); }
.toast.info    { border-left: 4px solid var(--gold); }
.toast svg { width: 16px; height: 16px; flex-shrink: 0; }

/* ══════════════════════════════════════════════
   CURRENCY BADGE
══════════════════════════════════════════════ */
.currency-chip {
  display: inline-flex; align-items: center; gap: 4px;
  background: var(--gold-light);
  border: 1.5px solid var(--gold);
  border-radius: 99px;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 700;
  color: var(--gold-dark);
  cursor: pointer;
  transition: var(--transition);
}
.currency-chip:hover { background: var(--gold); color: var(--black); }
.currency-chip svg { width: 12px; height: 12px; }

/* ══════════════════════════════════════════════
   MOBILE TYPE PILL & PDF BTN (hidden on desktop)
══════════════════════════════════════════════ */
.mob-type-pill { display: none; }
.mob-pdf-btn   { display: none; }

/* ══════════════════════════════════════════════
   MOBILE BOTTOM NAV BAR (hidden on desktop)
══════════════════════════════════════════════ */
.mob-bar { display: none; }

/* ══════════════════════════════════════════════
   ITEMS TABLE — desktop wrapper
══════════════════════════════════════════════ */
.items-table-wrap { display: block; overflow-x: auto; }
.items-cards      { display: none; } /* mobile only */

/* ══════════════════════════════════════════════
   PRINT STYLES
══════════════════════════════════════════════ */
@media print {
  body * { visibility: hidden !important; }
  .invoice-paper, .invoice-paper * { visibility: visible !important; }
  .invoice-paper {
    position: fixed !important;
    inset: 0 !important;
    margin: 0 !important;
    padding: 32px 36px !important;
    box-shadow: none !important;
    border-radius: 0 !important;
    max-width: 100% !important;
    width: 100% !important;
  }
  .paper-top-stripe { display: none !important; }
  @page { margin: 0; size: A4; }
}

/* ══════════════════════════════════════════════
   ≤ 900px  — tablet / landscape phone
══════════════════════════════════════════════ */
@media (max-width: 900px) {
  .main-wrap {
    grid-template-columns: 1fr;
  }
  .preview-panel {
    display: none;
    position: static;
    height: auto;
    min-height: 500px;
    padding: 16px 12px 100px; /* room for mob-bar */
  }
  .preview-panel.mob-active { display: flex; }
  .form-panel.mob-hidden    { display: none; }
  .form-panel               { padding-bottom: 100px; } /* room for mob-bar */

  /* Hide desktop tabs/actions, show mobile controls */
  #desktopDocTabs  { display: none; }
  #desktopActions  { display: none; }
  .mob-type-pill   { display: flex; }
  .mob-pdf-btn     { display: flex; }

  /* Header layout for mobile */
  .site-header {
    padding: 0 12px;
    gap: 10px;
  }
  .brand-tag { display: none; }

  /* Bottom nav bar */
  .mob-bar {
    display: flex;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    height: 66px;
    background: var(--black);
    border-top: 1.5px solid var(--gold);
    z-index: 110;
    align-items: stretch;
    box-shadow: 0 -4px 20px rgba(0,0,0,.3);
  }
  .mob-bar-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    color: var(--gray-500);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: .02em;
    text-transform: uppercase;
    padding: 8px 4px 10px;
    transition: var(--transition);
    position: relative;
    border: none;
    background: none;
    cursor: pointer;
  }
  .mob-bar-btn:hover  { color: var(--gray-300); }
  .mob-bar-btn.active { color: var(--gold); }
  .mob-bar-btn.active::after {
    content: '';
    position: absolute;
    top: 0; left: 16%; right: 16%;
    height: 2px;
    background: var(--gold);
    border-radius: 0 0 2px 2px;
  }
  .mob-bar-icon {
    display: flex; align-items: center; justify-content: center;
    width: 36px; height: 28px;
  }

  /* Center "New" button — gold elevated */
  .mob-bar-center { position: relative; }
  .mob-bar-icon-center {
    background: var(--gold);
    color: var(--black) !important;
    border-radius: 50%;
    width: 42px; height: 42px;
    margin-top: -14px;
    box-shadow: 0 4px 14px rgba(254,198,63,.5);
    position: relative;
    z-index: 1;
  }
  .mob-bar-btn.mob-bar-center { color: var(--gray-500); }
  .mob-bar-btn.mob-bar-center svg { stroke: var(--black); }
  .mob-bar-btn.mob-bar-center:hover .mob-bar-icon-center {
    background: var(--gold-dark);
  }
}

/* ══════════════════════════════════════════════
   ≤ 640px  — portrait phone
══════════════════════════════════════════════ */
@media (max-width: 640px) {
  :root { --header-h: 56px; }

  /* Header */
  .site-header { gap: 8px; padding: 0 10px; }
  .brand-name  { font-size: 14px; }
  .brand-icon  { width: 30px; height: 30px; font-size: 16px; }

  /* Mobile type pill */
  .mob-type-pill {
    align-items: center;
    background: var(--black-soft);
    border-radius: 8px;
    padding: 3px;
    gap: 2px;
    flex: 1;
    margin: 0 4px;
  }
  .mob-type-btn {
    flex: 1;
    padding: 5px 8px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 700;
    color: var(--gray-400);
    text-align: center;
    transition: var(--transition);
    white-space: nowrap;
  }
  .mob-type-btn.active {
    background: var(--gold);
    color: var(--black);
  }

  /* Mobile PDF button */
  .mob-pdf-btn {
    padding: 7px 12px;
    font-size: 12px;
    font-weight: 700;
    flex-shrink: 0;
  }
  .mob-pdf-label { display: none; } /* icon-only on very small */

  /* Form layout */
  .logo-from-grid        { grid-template-columns: 1fr; }
  .logo-upload-area      { width: 80px; height: 80px; }
  .two-col               { grid-template-columns: 1fr; }
  .three-col             { grid-template-columns: 1fr 1fr; }
  .totals-controls       { grid-template-columns: 1fr; }
  .form-card             { padding: 14px 12px; }

  /* Line items — switch to card mode */
  .items-table-wrap { display: none; }
  .items-cards      { display: flex; flex-direction: column; gap: 10px; }

  /* Item card */
  .item-card {
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-md);
    padding: 12px;
    background: var(--gray-50);
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
  }
  .item-card-desc input {
    width: 100%;
    padding: 9px 12px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--black);
    background: var(--white);
  }
  .item-card-desc input:focus { border-color: var(--gold); outline: none; }
  .item-card-desc input::placeholder { color: var(--gray-300); font-weight: 400; }
  .item-card-nums {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
    align-items: end;
  }
  .item-card-field { display: flex; flex-direction: column; gap: 3px; }
  .item-card-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: .07em;
    text-transform: uppercase;
    color: var(--gray-400);
  }
  .item-card-field input {
    width: 100%;
    padding: 8px 10px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 13px;
    text-align: right;
    color: var(--black);
    background: var(--white);
    font-family: var(--font-mono);
  }
  .item-card-field input:focus { border-color: var(--gold); outline: none; }
  .item-card-field.amt input {
    background: var(--gold-light);
    border-color: var(--gold);
    font-weight: 700;
    color: var(--gold-dark);
  }
  .item-card-del {
    position: absolute;
    top: 8px; right: 8px;
    width: 28px; height: 28px;
    border-radius: 50%;
    background: var(--gray-100);
    color: var(--gray-400);
    display: flex; align-items: center; justify-content: center;
    border: none;
    cursor: pointer;
    transition: var(--transition);
  }
  .item-card-del:hover { background: #fef2f2; color: var(--danger); }

  /* Preview paper */
  .paper-header        { flex-direction: column; gap: 12px; }
  .paper-doc-info      { text-align: left; }
  .paper-addresses     { grid-template-columns: 1fr; gap: 14px; }
  .paper-footer-notes  { grid-template-columns: 1fr; }
  .paper-details       { flex-wrap: wrap; }
  .detail-cell         { flex: 1 1 50%; }
  .invoice-paper       { padding: 22px 16px; }
}

/* ══════════════════════════════════════════════
   ≤ 400px  — tiny phones
══════════════════════════════════════════════ */
@media (max-width: 400px) {
  .mob-pdf-btn         { padding: 7px 10px; }
  .form-card           { padding: 12px 10px; }
  .invoice-paper       { padding: 18px 12px; }
  .paper-doc-type      { font-size: 22px; }
  .three-col           { grid-template-columns: 1fr; }
  .item-card-nums      { grid-template-columns: 1fr 1fr 1fr; gap: 6px; }
  .item-card-field input { padding: 7px 6px; font-size: 12px; }
  .mob-bar             { height: 60px; }
  .mob-bar-btn         { font-size: 9px; gap: 2px; }
  .mob-bar-icon        { width: 28px; height: 24px; }
  .mob-bar-icon svg    { width: 18px; height: 18px; }
  .mob-bar-icon-center { width: 36px; height: 36px; margin-top: -10px; }
}

/* ══════════════════════════════════════════════
   POST-DOWNLOAD MODAL
══════════════════════════════════════════════ */
.pdm-box {
  max-width: 520px;
}

/* Confetti burst animation */
@keyframes confettiBurst {
  0%   { transform: scale(0) rotate(-20deg); opacity: 0; }
  60%  { transform: scale(1.12) rotate(4deg); opacity: 1; }
  100% { transform: scale(1) rotate(0deg); opacity: 1; }
}
@keyframes floatUp {
  0%   { transform: translateY(8px); opacity: 0; }
  100% { transform: translateY(0);   opacity: 1; }
}

.pdm-hero {
  background: var(--black);
  border-radius: var(--radius-lg);
  padding: 28px 20px 22px;
  text-align: center;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
}
.pdm-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(254,198,63,.22) 0%, transparent 70%);
}
.pdm-emoji {
  font-size: 48px;
  line-height: 1;
  margin-bottom: 10px;
  display: block;
  animation: confettiBurst .5s cubic-bezier(.34,1.56,.64,1) both;
}
.pdm-headline {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 4px;
  animation: floatUp .4s .1s ease both;
}
.pdm-sub {
  font-size: 13px;
  color: var(--gray-400);
  animation: floatUp .4s .15s ease both;
}
.pdm-sub strong { color: var(--gold); }
.pdm-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(254,198,63,.12);
  border: 1px solid rgba(254,198,63,.3);
  border-radius: 99px;
  padding: 5px 14px;
  margin-top: 12px;
  font-size: 13px;
  font-weight: 600;
  color: var(--gold);
  animation: floatUp .4s .2s ease both;
}

/* Action grid */
.pdm-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 16px;
}
.pdm-action-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  padding: 14px 10px;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--gray-200);
  font-size: 12px;
  font-weight: 600;
  color: var(--gray-700);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  background: var(--white);
}
.pdm-action-btn:hover {
  border-color: var(--gold);
  background: var(--gold-light);
  color: var(--black);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(254,198,63,.2);
}
.pdm-action-btn .pdm-btn-icon {
  width: 36px; height: 36px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px;
}
.pdm-action-btn.wa  .pdm-btn-icon { background: #dcfce7; }
.pdm-action-btn.mail .pdm-btn-icon { background: #e0f2fe; }
.pdm-action-btn.edit .pdm-btn-icon { background: var(--gold-light); }
.pdm-action-btn.new  .pdm-btn-icon { background: #f3f4f6; }
.pdm-action-btn.copy .pdm-btn-icon { background: #f5f3ff; }
.pdm-action-btn.dl   .pdm-btn-icon { background: #fef3c7; }

/* Bottom row (full width) */
.pdm-actions-row {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}
.pdm-actions-row .pdm-action-btn {
  flex: 1;
  flex-direction: row;
  justify-content: center;
  gap: 8px;
  padding: 11px 14px;
}
.pdm-divider {
  text-align: center;
  font-size: 11px;
  color: var(--gray-400);
  font-weight: 500;
  letter-spacing: .05em;
  text-transform: uppercase;
  margin: 4px 0 12px;
  display: flex; align-items: center; gap: 8px;
}
.pdm-divider::before, .pdm-divider::after {
  content: ''; flex: 1; height: 1px; background: var(--gray-200);
}

/* Footer credit */
.pdm-credit {
  text-align: center;
  font-size: 11.5px;
  color: var(--gray-400);
  padding-top: 12px;
  border-top: 1px solid var(--gray-100);
}
.pdm-credit strong { color: var(--gold-dark); font-style: normal; }

/* ══════════════════════════════════════════════
   SITE FOOTER
══════════════════════════════════════════════ */
.site-footer {
  background: var(--black);
  border-top: 2px solid var(--gold);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 12px;
  color: var(--gray-500);
  text-align: center;
  flex-wrap: wrap;
}
.site-footer strong { color: var(--gold); }
.site-footer span.heart { color: var(--gold); font-size: 13px; }
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--gray-400); }

@media (max-width: 640px) {
  .pdm-actions { grid-template-columns: 1fr 1fr; gap: 8px; }
  .pdm-hero { padding: 22px 14px 18px; }
  .pdm-headline { font-size: 19px; }
  .pdm-emoji { font-size: 40px; }
  .site-footer { font-size: 11px; padding: 10px 14px; }
}
@media (max-width: 380px) {
  .pdm-actions { grid-template-columns: 1fr; }
}