/**
 * Kazakan Tools 2.0 — Invoice Generator Pro & Multi-Paper Sheet Studio
 */
/* ==========================================================================
   Invoice Generator Pro (Modern Dual-Column Responsive Architecture)
   ========================================================================== */
/* Container full screen width expansion for Invoice Generator */
.container.tool-page:has(#invoice-generator-app),
.tool-page:has(#invoice-generator-app),
.container:has(#invoice-generator-app) {
  max-width: min(1680px, 98vw) !important;
}

#invoice-generator-app .kz-calc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1.1fr);
  gap: clamp(16px, 2.2vw, 32px);
  align-items: start;
}

#invoice-generator-app .kz-calc-layout.is-flipped {
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.15fr);
}
#invoice-generator-app .kz-calc-layout.is-flipped .inv-config-card {
  order: 2;
}
#invoice-generator-app .kz-calc-layout.is-flipped .inv-preview-card {
  order: 1;
}

/* Smart Segmented Navigation Tab Bar on Small Screens (< 1060px) */
.inv-screen-nav-bar {
  display: none;
}

@media (max-width: 1060px) {
  .inv-screen-nav-bar {
    display: flex;
    align-items: center;
    background: var(--bg-surface, #1e293b);
    border: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.1));
    border-radius: var(--radius-md, 12px);
    padding: 4px;
    gap: 4px;
    margin-block-end: var(--space-3, 14px);
    position: sticky;
    top: 10px;
    z-index: 50;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  }
  [data-theme="light"] .inv-screen-nav-bar {
    background: #ffffff;
    border-color: #cbd5e1;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  }
  .inv-nav-tab {
    flex: 1 1 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    padding: 8px 12px;
    border: none;
    border-radius: var(--radius-sm, 8px);
    background: transparent;
    color: var(--text-muted, #94a3b8);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
  }
  .inv-nav-tab:hover {
    color: var(--text-main);
  }
  .inv-nav-tab.active {
    background: var(--brand-primary, #3b82f6);
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.35);
  }
  .inv-nav-total-chip {
    padding: 2px 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    line-height: 1.2;
    direction: ltr;
  }
  .inv-nav-tab:not(.active) .inv-nav-total-chip {
    background: rgba(59, 130, 246, 0.15);
    color: var(--brand-primary, #3b82f6);
  }

  #invoice-generator-app .kz-calc-layout,
  #invoice-generator-app .kz-calc-layout.is-flipped {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  #invoice-generator-app .kz-calc-layout.is-flipped .inv-config-card {
    order: 1;
  }
  #invoice-generator-app .kz-calc-layout.is-flipped .inv-preview-card {
    order: 2;
  }

  /* Control visibility between edit and preview on small screens */
  #invoice-generator-app[data-mobile-view="preview"] .inv-config-card {
    display: none !important;
  }
  #invoice-generator-app[data-mobile-view="preview"] .inv-preview-card {
    display: flex !important;
  }
  #invoice-generator-app:not([data-mobile-view="preview"]) .inv-config-card {
    display: block !important;
  }
  #invoice-generator-app:not([data-mobile-view="preview"]) .inv-preview-card {
    display: none !important;
  }
}

@media (min-width: 1061px) {
  #invoice-generator-app .inv-config-card {
    display: block !important;
    position: sticky;
    top: 84px;
    align-self: start;
    z-index: 5;
  }
  #invoice-generator-app .inv-preview-card {
    display: flex !important;
    position: sticky;
    top: 84px;
    align-self: start;
    z-index: 5;
  }
}

@media (max-width: 1060px) {
  #invoice-generator-app .inv-config-card,
  #invoice-generator-app .inv-preview-card {
    position: static;
  }
}

.inv-mobile-preview-action {
  display: none;
  margin-block-start: var(--space-3, 14px);
}
.inv-mobile-back-btn {
  display: none;
}
@media (max-width: 1060px) {
  .inv-mobile-preview-action {
    display: block;
  }
  .inv-mobile-back-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 38px;
    padding: 0 12px;
    font-size: 0.8125rem;
    font-weight: 600;
  }
}

.inv-preview-header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-block-end: var(--space-3, 14px);
}

.inv-preview-actions-cluster {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.inv-paper-select {
  height: 38px;
  min-height: 38px;
  padding: 0 10px;
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: 8px;
  background: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
  cursor: pointer;
}

.inv-btn-flip {
  height: 38px;
  padding: 0 10px;
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* Field Header & Sleek Exclusion Toggles */
.inv-field-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: 6px;
  gap: 6px;
}
.inv-field-header > label,
.inv-field-header > span {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main);
}

.inv-toggle-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  padding: 2px 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle, rgba(255, 255, 255, 0.1));
  border-radius: 20px;
  font-size: 0.72rem;
  color: var(--text-muted, #94a3b8);
  transition: all 0.15s ease;
  user-select: none;
  min-height: 24px;
}
[data-theme="light"] .inv-toggle-pill {
  background: #f8fafc;
  border-color: #cbd5e1;
  color: #64748b;
}
.inv-toggle-pill:hover {
  border-color: var(--brand-primary, #3b82f6);
  color: var(--text-main);
}
.inv-toggle-pill input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 13px;
  height: 13px;
  border: 1.5px solid currentColor;
  border-radius: 3px;
  background: transparent;
  cursor: pointer;
  display: inline-grid;
  place-content: center;
  margin: 0;
  padding: 0;
}
.inv-toggle-pill input[type="checkbox"]:checked {
  background: #ef4444;
  border-color: #ef4444;
}
.inv-toggle-pill input[type="checkbox"]:checked::before {
  content: "✕";
  font-size: 9px;
  color: #ffffff;
  font-weight: 900;
  line-height: 1;
}
.inv-toggle-pill:has(input:checked) {
  background: rgba(239, 68, 68, 0.1);
  border-color: rgba(239, 68, 68, 0.4);
  color: #f87171;
}
[data-theme="light"] .inv-toggle-pill:has(input:checked) {
  background: #fef2f2;
  border-color: #fecaca;
  color: #dc2626;
}

/* Hidden Field on Invoice Sheet */
.is-hidden-inv {
  display: none !important;
}

/* Sleek Discount Box */
.inv-discount-box {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm, 10px);
  background: var(--bg-surface);
  height: 42px;
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.inv-discount-box:focus-within {
  border-color: var(--brand-primary, #3b82f6);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}
.inv-discount-input {
  flex: 1 1 auto;
  width: 100%;
  border: none !important;
  background: transparent !important;
  color: var(--text-main);
  font-size: 0.95rem !important;
  font-weight: 600;
  padding: 0 12px !important;
  outline: none !important;
  box-shadow: none !important;
}
.inv-discount-type-segmented {
  display: flex;
  align-items: center;
  background: rgba(255, 255, 255, 0.04);
  border-inline-start: 1px solid var(--border-subtle);
  padding: 3px;
  gap: 3px;
}
[data-theme="light"] .inv-discount-type-segmented {
  background: #f1f5f9;
  border-inline-start-color: #cbd5e1;
}
.inv-disc-btn {
  height: 30px;
  padding: 0 10px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}
.inv-disc-btn.active {
  background: var(--brand-primary, #3b82f6);
  color: #ffffff;
}

/* Searchable Currency Picker */
.inv-currency-picker {
  position: relative;
  width: 100%;
}
.inv-curr-trigger {
  display: flex;
  align-items: center;
  width: 100%;
  height: 42px;
  padding: 0 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm, 10px);
  color: var(--text-main);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  gap: 8px;
  text-align: start;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.inv-curr-trigger:hover,
.inv-curr-trigger:focus-visible {
  border-color: var(--brand-primary, #3b82f6);
  outline: none;
}
.inv-curr-flag {
  font-size: 1.15rem;
  line-height: 1;
}
.inv-curr-code {
  font-weight: 800;
  color: var(--brand-primary, #3b82f6);
}
.inv-curr-name {
  flex: 1 1 auto;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.82rem;
  color: var(--text-muted);
}
.inv-curr-arrow {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-inline-start: auto;
}
.inv-curr-popover {
  position: absolute;
  inset-inline-start: 0;
  top: calc(100% + 6px);
  width: 100%;
  min-width: 280px;
  max-width: 380px;
  background: #0f172a;
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4);
  z-index: 999;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
[data-theme="light"] .inv-curr-popover {
  background: #ffffff;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.12);
  border-color: #cbd5e1;
}
.inv-curr-search-box {
  position: relative;
}
.inv-curr-search-input {
  width: 100%;
  height: 38px;
  padding: 0 10px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  color: var(--text-main);
  font-size: 0.85rem;
  outline: none;
}
[data-theme="light"] .inv-curr-search-input {
  background: #f8fafc;
  border-color: #cbd5e1;
}
.inv-curr-list {
  max-height: 240px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.inv-curr-option {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 8px 10px;
  background: transparent;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  gap: 8px;
  color: var(--text-main);
  text-align: start;
  transition: background 0.15s ease;
}
.inv-curr-option:hover {
  background: rgba(59, 130, 246, 0.12);
}
.inv-curr-option.is-selected {
  background: rgba(59, 130, 246, 0.18);
  font-weight: 700;
}
.inv-curr-meta {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
}
.inv-curr-meta strong {
  font-size: 0.84rem;
}
.inv-curr-meta small {
  font-size: 0.72rem;
  color: var(--text-muted);
}
.inv-curr-check {
  color: var(--brand-primary, #3b82f6);
  font-weight: 800;
}
.inv-curr-empty {
  padding: 16px;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Service Templates Chips */
.inv-template-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-block-end: 12px;
}
.inv-template-chip {
  padding: 5px 11px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}
[data-theme="light"] .inv-template-chip {
  background: #f1f5f9;
  border-color: #cbd5e1;
}
.inv-template-chip:hover {
  background: var(--brand-primary, #3b82f6);
  border-color: var(--brand-primary, #3b82f6);
  color: #ffffff;
}

/* Item Unit Selection & Item Row Actions */
.item-unit-select {
  height: 30px;
  padding: 0 4px;
  font-size: 0.75rem;
  border-radius: 6px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  cursor: pointer;
  margin-block-start: 4px;
  width: 100%;
}
.item-actions-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
}
.item-action-btn {
  width: 28px;
  height: 28px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  border: 1px solid var(--border-subtle);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s;
}
.item-action-btn:hover {
  color: var(--text-main);
  border-color: var(--brand-primary, #3b82f6);
}
.item-action-btn.is-delete:hover {
  color: #ef4444;
  border-color: #ef4444;
}

/* Invoice Title Preset Chips */
.inv-title-preset-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-block-start: 8px;
}
.inv-title-chip {
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}
[data-theme="light"] .inv-title-chip {
  background: #f1f5f9;
  border-color: #cbd5e1;
  color: #475569;
}
.inv-title-chip:hover {
  background: var(--brand-primary, #3b82f6);
  border-color: var(--brand-primary, #3b82f6);
  color: #ffffff;
}

/* Config Card Responsive Grids */
.inv-meta-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-block-end: var(--space-3);
}
@media (max-width: 768px) {
  .inv-meta-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

.inv-parties-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  border-top: 1px solid var(--border-subtle);
  padding-block-start: var(--space-3);
  margin-block-end: var(--space-3);
}
@media (max-width: 880px) {
  .inv-parties-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
}

.inv-financials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  border-top: 1px solid var(--border-subtle);
  padding-block-start: var(--space-3);
}
@media (max-width: 768px) {
  .inv-financials-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

/* Responsive Line Items Table Transformation for Small Screens */
.inv-items-table {
  width: 100%;
}
.inv-cell-field-label,
.inv-cell-total-label {
  display: none;
}

@media (max-width: 680px) {
  .inv-items-table {
    display: block;
    width: 100%;
  }
  .inv-items-table thead {
    display: none;
  }
  .inv-items-table tbody {
    display: flex;
    flex-direction: column;
    gap: 10px;
    width: 100%;
  }
  .inv-items-table tbody tr {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding: 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm, 10px);
    width: 100%;
    box-sizing: border-box;
  }
  [data-theme="light"] .inv-items-table tbody tr {
    background: #f8fafc;
    border-color: #cbd5e1;
  }
  .inv-items-table td {
    padding: 0 !important;
    border: none !important;
    width: 100% !important;
  }
  .inv-items-table .inv-cell-desc {
    grid-column: 1 / -1;
  }
  .inv-items-table .inv-cell-qty {
    grid-column: 1 / 2;
  }
  .inv-items-table .inv-cell-price {
    grid-column: 2 / 3;
  }
  .inv-items-table .inv-cell-field-label {
    display: block;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-block-end: 4px;
  }
  .inv-items-table .inv-cell-total {
    grid-column: 1 / 2;
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 700;
    font-size: 0.875rem;
    color: var(--brand-primary, #3b82f6);
  }
  .inv-items-table .inv-cell-total-label {
    display: inline;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-muted);
  }
  .inv-items-table .inv-cell-actions {
    grid-column: 2 / 3;
    display: flex;
    justify-content: flex-end;
  }
}

.inv-preview-sheet-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-block-end: 8px;
}
@media (max-width: 600px) {
  #inv-printable-sheet {
    padding: 16px 14px !important;
    font-size: 0.8125rem !important;
  }
  #inv-printable-sheet h2#prev-seller-name {
    font-size: 1.1rem !important;
  }
  #inv-printable-sheet h3#prev-inv-title {
    font-size: 1.25rem !important;
  }
}

/* Printable Sheet Multi-Paper Specifications */
#inv-printable-sheet {
  background: #ffffff;
  color: #0f172a;
  padding: 32px;
  border-radius: 12px;
  border: 1px solid #e2e8f0;
  font-size: 0.88rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  width: 100%;
  box-sizing: border-box;
  transition: max-width 0.25s ease, padding 0.25s ease;
}

#inv-printable-sheet[data-paper="a4"] {
  max-width: 820px;
  min-height: 980px;
}
#inv-printable-sheet[data-paper="a5"] {
  max-width: 580px;
  min-height: 720px;
  padding: 22px;
  font-size: 0.82rem;
}
#inv-printable-sheet[data-paper="letter"] {
  max-width: 800px;
  min-height: 960px;
}
#inv-printable-sheet[data-paper="legal"] {
  max-width: 800px;
  min-height: 1120px;
}
#inv-printable-sheet[data-paper="thermal80"] {
  max-width: 360px;
  margin-inline: auto;
  padding: 16px 12px;
  font-size: 0.78rem;
  font-family: var(--font-mono, monospace);
  border-radius: 6px;
}
#inv-printable-sheet[data-paper="thermal80"] .inv-thermal-hide {
  display: none !important;
}
#inv-printable-sheet[data-paper="thermal80"] .inv-sheet-header {
  flex-direction: column !important;
  align-items: center !important;
  text-align: center !important;
  gap: 12px !important;
  border-bottom: 2px dashed #94a3b8 !important;
}
#inv-printable-sheet[data-paper="thermal80"] .inv-sheet-client {
  text-align: center !important;
  border: 1px dashed #cbd5e1 !important;
}
#inv-printable-sheet[data-paper="thermal80"] .inv-sheet-footer {
  flex-direction: column !important;
  gap: 14px !important;
  border-top: 2px dashed #94a3b8 !important;
  padding-top: 12px !important;
}
#inv-printable-sheet[data-paper="thermal80"] .inv-totals-box {
  width: 100% !important;
}

@media print {
  @page {
    size: var(--inv-print-page-size, A4 portrait);
    margin: 8mm;
  }
  body * {
    visibility: hidden !important;
  }
  #inv-printable-sheet,
  #inv-printable-sheet * {
    visibility: visible !important;
  }
  #inv-printable-sheet {
    position: absolute !important;
    inset-inline-start: 0 !important;
    top: 0 !important;
    width: 100% !important;
    max-width: 100% !important;
    min-height: 0 !important;
    box-shadow: none !important;
    border: none !important;
    padding: 0 !important;
    margin: 0 !important;
  }
}

@media (max-width: 480px) {
  #inv-printable-sheet {
    padding: 12px 10px !important;
    border-radius: 8px;
  }
}

/* Low-Spec & No-GPU Solid Fallback */
html.no-glass #inv-printable-sheet {
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1) !important;
}

@supports not (backdrop-filter: blur(10px)) {
  #inv-printable-sheet {
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1) !important;
  }
}