:root {
  --bg: #f1f5f9;
  --surface: #ffffff;
  --surface-alt: #f8fafc;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --text: #0f172a;
  --text-muted: #475569;
  --text-subtle: #64748b;
  --primary: #0f172a;
  --accent-blue: #2563eb;
  --accent-blue-soft: #eff6ff;
  --pro: #7c3aed;
  --pro-soft: #f5f3ff;
  --emerald: #059669;
  --inv-accent: #1e3a8a;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 4px 22px rgba(15, 23, 42, 0.06);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.topbar {
  background: #0f172a;
  color: #f8fafc;
  border-bottom: 1px solid #1e293b;
  position: sticky;
  top: 0;
  z-index: 40;
}

.topbar-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 11px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.brand-home {
  color: #94a3b8;
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  padding: 4px 9px;
  border-radius: 6px;
  border: 1px solid #334155;
}

.brand-home:hover {
  color: #ffffff;
  border-color: #64748b;
}

.app-title-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.app-badge-icon {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  background: linear-gradient(135deg, #059669, #2563eb);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
}

.app-title {
  font-size: 16px;
  font-weight: 700;
}

.privacy-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  font-weight: 600;
  color: #34d399;
  background: rgba(16, 185, 129, 0.14);
  border: 1px solid rgba(52, 211, 153, 0.3);
  padding: 3px 9px;
  border-radius: 999px;
}

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

.nav-link-chip {
  color: #cbd5e1;
  text-decoration: none;
  font-size: 12.5px;
  padding: 6px 10px;
  border-radius: 7px;
}

.nav-link-chip:hover {
  background: #1e293b;
  color: #ffffff;
}

.lang-btn {
  background: #1e293b;
  color: #f8fafc;
  border: 1px solid #334155;
  padding: 6px 11px;
  border-radius: 7px;
  font-size: 12.5px;
  font-weight: 600;
  cursor: pointer;
}

.pro-status-btn {
  background: linear-gradient(135deg, #7c3aed, #2563eb);
  color: #ffffff;
  border: none;
  padding: 7px 13px;
  border-radius: 8px;
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
}

.pro-status-btn.unlocked {
  background: linear-gradient(135deg, #059669, #0d9488);
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 18px 20px 32px;
}

.toolbar-bar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  box-shadow: var(--shadow);
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.toolbar-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-subtle);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 13px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
  transition: all 0.14s;
  white-space: nowrap;
}

.btn:hover {
  background: var(--surface-alt);
}

.btn-xs {
  padding: 5px 9px;
  font-size: 12px;
  border-radius: 6px;
}

.btn-primary {
  background: var(--accent-blue);
  color: #ffffff;
  border-color: var(--accent-blue);
}

.btn-primary:hover {
  background: #1d4ed8;
}

.btn-emerald {
  background: var(--emerald);
  color: #ffffff;
  border-color: var(--emerald);
}

.btn-emerald:hover {
  background: #047857;
}

.btn-pro {
  background: linear-gradient(135deg, #7c3aed, #2563eb);
  color: #ffffff;
  border: none;
}

.input,
.select,
.textarea {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--border-strong);
  border-radius: 7px;
  font-size: 13px;
  font-family: inherit;
  color: var(--text);
  background: #ffffff;
}

.select-inline {
  width: auto;
  padding: 7px 10px;
  font-weight: 600;
}

.textarea {
  resize: vertical;
  min-height: 62px;
}

.workspace-split {
  display: grid;
  grid-template-columns: minmax(420px, 540px) 1fr;
  gap: 20px;
  align-items: start;
}

@media (max-width: 1080px) {
  .workspace-split {
    grid-template-columns: 1fr;
  }
}

.editor-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}

.card-pro {
  border-color: #c4b5fd;
  background: linear-gradient(180deg, #ffffff 0%, #faf5ff 100%);
}

.card-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
}

.card-title {
  font-size: 13.5px;
  font-weight: 800;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 7px;
}

.badge-pro {
  font-size: 10.5px;
  font-weight: 800;
  padding: 2px 7px;
  border-radius: 999px;
  background: #ede9fe;
  color: #6d28d9;
  text-transform: uppercase;
  white-space: nowrap;
}

.badge-free {
  font-size: 10.5px;
  font-weight: 800;
  padding: 2px 7px;
  border-radius: 999px;
  background: #dcfce7;
  color: #047857;
  text-transform: uppercase;
}

.form-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.form-grid-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.field label {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-muted);
}

.line-items-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.line-item-editor-row {
  display: grid;
  grid-template-columns: 1fr 72px 92px 86px 30px;
  gap: 6px;
  align-items: center;
  padding: 8px;
  background: var(--surface-alt);
  border: 1px solid var(--border);
  border-radius: 8px;
}

@media (max-width: 560px) {
  .line-item-editor-row {
    grid-template-columns: 1fr 1fr;
  }
}

.line-amt-chip {
  font-size: 12.5px;
  font-weight: 700;
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--text);
}

.icon-del-btn {
  border: 1px solid var(--border);
  background: #ffffff;
  color: #ef4444;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 700;
}

.icon-del-btn:hover {
  background: #fef2f2;
}

.color-swatches {
  display: flex;
  align-items: center;
  gap: 7px;
  flex-wrap: wrap;
}

.accent-dot {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  padding: 0;
}

.accent-dot.active {
  outline: 2px solid #0f172a;
  outline-offset: 2px;
}

.crm-tabs {
  display: flex;
  gap: 4px;
  background: #ede9fe;
  padding: 3px;
  border-radius: 8px;
  margin-bottom: 10px;
}

.crm-tab {
  flex: 1;
  border: none;
  background: transparent;
  padding: 6px 8px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  color: #5b21b6;
  cursor: pointer;
}

.crm-tab.active {
  background: #ffffff;
  color: #1e1b4b;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.crm-saved-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  max-height: 185px;
  overflow-y: auto;
  margin-top: 8px;
}

.crm-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 7px 10px;
  background: #ffffff;
  border: 1px solid #ddd6fe;
  border-radius: 7px;
  font-size: 12px;
}

.crm-row-meta {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.crm-row-title {
  font-weight: 700;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.crm-row-sub {
  color: var(--text-subtle);
  font-size: 11px;
}

/* Live Paper Preview Stage */
.preview-stage {
  background: #cbd5e1;
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: sticky;
  top: 72px;
}

.invoice-paper {
  background: #ffffff;
  width: 100%;
  max-width: 794px;
  min-height: 1020px;
  padding: 44px 48px;
  border-radius: 4px;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.2);
  color: #0f172a;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-top: 7px solid var(--inv-accent);
}

.invoice-paper.paper-letter {
  max-width: 816px;
  min-height: 980px;
}

@media (max-width: 680px) {
  .preview-stage {
    padding: 10px;
  }
  .invoice-paper {
    padding: 24px 20px;
    min-height: auto;
  }
}

.inv-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  padding-bottom: 22px;
  border-bottom: 1.5px solid #e2e8f0;
}

.inv-brand-box {
  max-width: 55%;
}

.inv-logo-img {
  display: block;
  max-width: 180px;
  object-fit: contain;
  margin-bottom: 10px;
}

.inv-sender-name {
  font-size: 19px;
  font-weight: 800;
  color: #0f172a;
  margin: 0 0 4px 0;
}

.inv-preline {
  font-size: 12.5px;
  color: #475569;
  white-space: pre-line;
  line-height: 1.5;
}

.inv-doc-meta {
  text-align: right;
}

.inv-doc-badge {
  font-size: 26px;
  font-weight: 900;
  letter-spacing: 0.04em;
  color: var(--inv-accent);
  margin: 0 0 8px 0;
  line-height: 1.1;
}

.inv-meta-grid {
  display: grid;
  grid-template-columns: auto auto;
  gap: 3px 14px;
  font-size: 12.5px;
  justify-content: end;
}

.inv-meta-label {
  color: #64748b;
  font-weight: 600;
}

.inv-meta-val {
  color: #0f172a;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.inv-parties {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 24px;
  margin: 22px 0;
}

.inv-section-kicker {
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--inv-accent);
  margin-bottom: 5px;
}

.inv-client-name {
  font-size: 15px;
  font-weight: 800;
  color: #0f172a;
  margin-bottom: 2px;
}

.inv-summary-highlight {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-left: 4px solid var(--inv-accent);
  border-radius: 8px;
  padding: 12px 14px;
  align-self: start;
}

.inv-highlight-amt {
  font-size: 22px;
  font-weight: 900;
  color: var(--inv-accent);
  font-variant-numeric: tabular-nums;
}

.inv-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 6px;
  font-size: 13px;
}

.inv-table th {
  background: #f8fafc;
  color: #334155;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 10px 10px;
  border-top: 1.5px solid #cbd5e1;
  border-bottom: 1.5px solid #cbd5e1;
  text-align: left;
}

.inv-table th.num,
.inv-table td.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.inv-table td {
  padding: 11px 10px;
  border-bottom: 1px solid #e2e8f0;
  vertical-align: top;
}

.inv-totals-wrap {
  display: flex;
  justify-content: flex-end;
  margin-top: 16px;
}

.inv-totals-box {
  width: 290px;
  font-size: 13px;
}

.inv-tot-row {
  display: flex;
  justify-content: space-between;
  padding: 5px 0;
  color: #334155;
  font-variant-numeric: tabular-nums;
}

.inv-tot-row.grand {
  margin-top: 6px;
  padding: 10px 0 8px;
  border-top: 2px solid #0f172a;
  font-size: 16px;
  font-weight: 900;
  color: #0f172a;
}

.inv-tot-row.balance {
  padding: 7px 10px;
  background: #eff6ff;
  border-radius: 6px;
  color: var(--inv-accent);
  font-weight: 800;
  margin-top: 4px;
}

.inv-bottom-grid {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 20px;
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid #e2e8f0;
}

.inv-notes-col {
  flex: 1;
}

.inv-qr-box {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  background: #f8fafc;
  max-width: 265px;
}

.inv-qr-svg-wrap {
  width: 78px;
  height: 78px;
  flex-shrink: 0;
  background: #ffffff;
  padding: 3px;
  border-radius: 6px;
  border: 1px solid #e2e8f0;
}

.inv-qr-svg-wrap svg {
  width: 100%;
  height: 100%;
  display: block;
}

.inv-qr-caption {
  font-size: 11px;
  line-height: 1.35;
  color: #334155;
  word-break: break-all;
}

.inv-footer-brand {
  margin-top: 16px;
  text-align: center;
  font-size: 11px;
  color: #94a3b8;
}

.below-workspace {
  margin-top: 22px;
}

.tip-strip {
  margin-top: 12px;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: var(--text-muted);
}

.seo-links-footer {
  margin-top: 14px;
  padding: 14px 16px;
  border-radius: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: 12.5px;
}

.seo-links-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-top: 8px;
}

.seo-links-grid a {
  color: var(--accent-blue);
  text-decoration: none;
}

.seo-links-grid a:hover {
  text-decoration: underline;
}

/* Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(3px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
  z-index: 100;
}

.modal-backdrop.open {
  display: flex;
}

.modal-box {
  background: #ffffff;
  border-radius: 16px;
  max-width: 500px;
  width: 100%;
  padding: 24px;
  box-shadow: 0 24px 50px rgba(15, 23, 42, 0.28);
  border: 1px solid var(--border);
}

.modal-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.modal-head h2 {
  margin: 0;
  font-size: 19px;
}

.modal-close {
  border: none;
  background: #f1f5f9;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 16px;
}

.pro-perks {
  margin: 14px 0;
  padding: 12px 14px;
  background: var(--pro-soft);
  border: 1px solid #ddd6fe;
  border-radius: 10px;
  font-size: 13px;
}

.pro-perks ul {
  margin: 6px 0 0 0;
  padding-left: 18px;
}

.pro-perks li {
  margin-bottom: 5px;
}

.key-input-row {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.key-input {
  flex: 1;
  padding: 10px 12px;
  border: 1.5px solid var(--border-strong);
  border-radius: 9px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13.5px;
  text-transform: uppercase;
}

.modal-msg {
  margin-top: 8px;
  font-size: 12.5px;
  min-height: 18px;
}

.modal-msg.err {
  color: #dc2626;
}

.modal-msg.ok {
  color: #059669;
  font-weight: 700;
}

/* Vector Print Isolation (activated on real browser Cmd+P / window.print()) */
@media print {
  body.print-invoice-only {
    background: #ffffff !important;
    margin: 0 !important;
    padding: 0 !important;
  }
  body.print-invoice-only .topbar,
  body.print-invoice-only .toolbar-bar,
  body.print-invoice-only .editor-col,
  body.print-invoice-only .below-workspace,
  body.print-invoice-only .modal-backdrop {
    display: none !important;
  }
  body.print-invoice-only .container {
    max-width: none !important;
    padding: 0 !important;
    margin: 0 !important;
  }
  body.print-invoice-only .workspace-split {
    display: block !important;
  }
  body.print-invoice-only .preview-stage {
    background: transparent !important;
    padding: 0 !important;
    position: static !important;
  }
  body.print-invoice-only .invoice-paper {
    box-shadow: none !important;
    max-width: none !important;
    width: 100% !important;
    min-height: auto !important;
    padding: 10mm 12mm !important;
    border-radius: 0 !important;
  }
  .inv-table tr,
  .inv-totals-wrap,
  .inv-bottom-grid {
    break-inside: avoid;
    page-break-inside: avoid;
  }
}