:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --ink: #142033;
  --muted: #647084;
  --line: #d9dee7;
  --accent: #1769aa;
  --accent-soft: #e8f2fb;
  --danger: #b42318;
  --ok: #11845b;
  --shadow: 0 18px 45px rgba(20, 32, 51, .09);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
.app-shell { position: sticky; top: 0; z-index: 10; background: rgba(246, 247, 249, .92); backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
.topbar { min-height: 112px; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 12px 24px; }
.brand { display: flex; align-items: center; min-width: 220px; }
.app-logo { display: block; width: clamp(210px, 24vw, 360px); height: auto; max-height: 88px; object-fit: contain; object-position: left center; }
.top-actions, .panel-head, .preview-tools, .export-actions, .toggle-row, .automation-grid { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.primary, .secondary, .icon-button, .export-actions button, .nav-item, .link-button {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  min-height: 42px;
  padding: 0 14px;
  color: var(--ink);
}
.link-button { display: inline-flex; align-items: center; text-decoration: none; }
.primary { background: var(--accent); border-color: var(--accent); color: white; font-weight: 700; }
.secondary:hover, .icon-button:hover, .export-actions button:hover, .nav-item:hover { border-color: var(--accent); color: var(--accent); }
.icon-button { width: 42px; padding: 0; font-size: 18px; }
.layout { display: grid; grid-template-columns: 220px 1fr; min-height: calc(100vh - 72px); }
.sidebar { border-right: 1px solid var(--line); padding: 18px; background: #fff; display: flex; flex-direction: column; gap: 8px; }
.nav-item { text-align: left; font-weight: 650; }
.nav-item.active { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.status-box { padding: 14px; border: 1px solid var(--line); border-radius: 8px; background: #fbfcfe; }
.sidebar .status-box:first-of-type { margin-top: auto; }
.status-dot { display: inline-block; width: 10px; height: 10px; border-radius: 99px; background: var(--ok); margin-right: 6px; }
.status-box small { display: block; color: var(--muted); margin-top: 4px; }
.workspace { display: grid; grid-template-columns: minmax(520px, 1fr) minmax(390px, 44vw); gap: 18px; padding: 18px; align-items: start; }
.editor { display: flex; flex-direction: column; gap: 16px; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; box-shadow: var(--shadow); padding: 18px; }
.panel-head { justify-content: space-between; margin-bottom: 12px; }
h1, h2 { margin: 0 0 12px; letter-spacing: 0; }
h1 { font-size: 26px; }
h2 { font-size: 17px; }
.grid { display: grid; gap: 12px; }
.grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
label { display: grid; gap: 6px; color: var(--muted); font-size: 13px; font-weight: 650; }
input, select, textarea {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 11px;
  color: var(--ink);
  background: white;
}
textarea { min-height: 98px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 3px solid var(--accent-soft); border-color: var(--accent); }
.items { display: grid; gap: 10px; }
.item-row { display: grid; grid-template-columns: .9fr 1.6fr .7fr .7fr .9fr .7fr .8fr .8fr 42px; gap: 8px; align-items: end; padding: 12px; background: #fbfcfe; border: 1px solid var(--line); border-radius: 8px; }
.remove-item { min-height: 42px; border-radius: 8px; border: 1px solid #f1b8b2; background: #fff5f4; color: var(--danger); font-size: 22px; }
.toggle-row label, .automation-grid label { display: flex; align-items: center; gap: 8px; min-height: 40px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: #fbfcfe; }
.toggle-row input, .automation-grid input { width: auto; min-height: auto; }
.preview-column { position: sticky; top: 90px; display: grid; gap: 12px; }
.preview-tools { justify-content: space-between; }
.pill { border-radius: 99px; padding: 7px 12px; background: var(--accent-soft); color: var(--accent); font-weight: 700; }
.invoice-preview { background: white; min-height: 1122px; box-shadow: var(--shadow); border: 1px solid var(--line); padding: 38px; color: #111827; }
.inv-head { display: flex; justify-content: space-between; gap: 30px; border-bottom: 2px solid var(--preview-accent, var(--accent)); padding-bottom: 24px; }
.logo-preview { max-width: 150px; max-height: 80px; object-fit: contain; }
.logo-placeholder { display: grid; place-items: center; width: 150px; height: 70px; border: 1px dashed #aab3c2; color: #647084; border-radius: 8px; }
.invoice-preview h2 { font-size: 28px; margin: 22px 0 4px; }
.muted { color: #667085; }
.preview-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; margin: 24px 0; }
.meta-table, .totals, .positions { width: 100%; border-collapse: collapse; }
.positions th, .positions td, .meta-table td, .totals td { border-bottom: 1px solid #e5e7eb; padding: 8px; text-align: left; vertical-align: top; }
.positions th { background: #f2f5f8; font-size: 12px; }
.num { text-align: right !important; white-space: nowrap; }
.totals { margin-left: auto; max-width: 360px; margin-top: 18px; }
.totals tr:last-child td { font-size: 18px; font-weight: 800; color: var(--preview-accent, var(--accent)); }
.qr { width: 132px; height: 132px; border: 8px solid white; box-shadow: 0 0 0 1px #d0d5dd; image-rendering: pixelated; }
.notes { display: grid; gap: 8px; margin-top: 24px; font-size: 13px; color: #344054; }
.signature { margin-top: 22px; padding-top: 12px; border-top: 1px solid #98a2b3; width: 260px; }
.archived { opacity: .62; filter: grayscale(.4); }
.invoice-list { display: grid; gap: 8px; }
.invoice-list-item {
  display: grid;
  gap: 3px;
  width: 100%;
  min-height: 54px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfe;
  color: var(--ink);
  text-align: left;
}
.invoice-list-item span { color: var(--muted); font-size: 13px; }
.invoice-list-item:hover { border-color: var(--accent); background: var(--accent-soft); }
@media (max-width: 1180px) {
  .layout { grid-template-columns: 1fr; }
  .sidebar { flex-direction: row; overflow-x: auto; position: sticky; top: 72px; z-index: 5; }
  .status-box { margin: 0; min-width: 170px; }
  .workspace { grid-template-columns: 1fr; }
  .preview-column { position: static; }
}
@media (max-width: 760px) {
  .topbar, .workspace { padding: 12px; }
  .topbar { align-items: flex-start; flex-direction: column; }
  .app-logo { width: min(300px, 86vw); max-height: 92px; }
  .grid.two, .grid.three, .preview-grid { grid-template-columns: 1fr; }
  .item-row { grid-template-columns: 1fr; }
  .invoice-preview { padding: 22px; min-height: auto; overflow-x: auto; }
  .inv-head { flex-direction: column; }
}
@media print {
  body { background: white; }
  .app-shell, .sidebar, .editor, .preview-tools { display: none !important; }
  .layout, .workspace { display: block; padding: 0; min-height: auto; }
  .preview-column { position: static; }
  .invoice-preview { box-shadow: none; border: 0; width: 210mm; min-height: 297mm; padding: 14mm; }
  @page { size: A4; margin: 0; }
}