:root {
  color-scheme: light;
  --bg: #f4f4f2;
  --surface: #fcfcfb;
  --border: #e2e1dc;
  --text: #0b0b0b;
  --text-2: #52514e;
  --muted: #7a7974;
  --accent: #2a78d6;
  --accent-ink: #ffffff;
  --good: #0f7a3d;
  --warn-bg: #fdf0d5;
  --warn-ink: #8a5300;
  --bad: #c42b2b;
  --flash: #e6f0fc;
  --series-1: #2a78d6;
  --grid: #e8e7e3;
  --radius: 10px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #121211;
    --surface: #1a1a19;
    --border: #2f2f2d;
    --text: #f0efec;
    --text-2: #c3c2b7;
    --muted: #94938c;
    --accent: #3987e5;
    --good: #4cc27e;
    --warn-bg: #3a2c0c;
    --warn-ink: #f2c46b;
    --bad: #ef7070;
    --flash: #1d2b3d;
    --series-1: #3987e5;
    --grid: #2a2a28;
  }
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font-size: 15px; }
h2 { font-size: 16px; margin: 0 0 12px; }
[hidden] { display: none !important; }

.topbar {
  position: sticky; top: 0; z-index: 5;
  display: flex; align-items: center; gap: 16px;
  padding: 10px 16px; background: var(--surface); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; font-size: 18px; white-space: nowrap; }
.tabs { display: flex; gap: 4px; overflow-x: auto; flex: 1; }
.tabs button {
  border: 0; background: none; color: var(--text-2); font: inherit; font-weight: 600;
  padding: 8px 14px; border-radius: 8px; cursor: pointer; white-space: nowrap;
}
.tabs button:hover { background: var(--bg); }
.tabs button.active { background: var(--accent); color: var(--accent-ink); }
.lang { border: 1px solid var(--border); background: none; color: var(--text); border-radius: 8px; padding: 6px 10px; cursor: pointer; font-weight: 600; }

main { max-width: 1200px; margin: 0 auto; padding: 16px; display: grid; gap: 16px; }
.page { display: grid; gap: 16px; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; min-width: 0; }

.btn {
  font: inherit; font-weight: 600; border: 1px solid var(--border); background: var(--surface); color: var(--text);
  padding: 9px 14px; border-radius: 8px; cursor: pointer;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn.ghost { background: none; }
.btn.small { padding: 4px 9px; font-size: 13px; }
.btn.big { padding: 16px; font-size: 18px; width: 100%; }

input, select {
  font: inherit; color: var(--text); background: var(--surface);
  border: 1px solid var(--border); border-radius: 8px; padding: 9px 11px; width: 100%;
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }

.scan-row { display: flex; gap: 8px; }
.scan-input { font-size: 22px; padding: 12px 14px; font-family: ui-monospace, Menlo, Consolas, monospace; }
.hint { color: var(--muted); font-size: 13px; margin: 8px 0 12px; }
.empty { color: var(--muted); text-align: center; padding: 24px 8px; margin: 0; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.mono { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 13px; }
.error { color: var(--bad); min-height: 1em; margin: 4px 0; }
.pos { color: var(--good); font-weight: 600; }
.neg { color: var(--bad); font-weight: 600; }

.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; }
.table th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); font-weight: 600; padding: 8px; border-bottom: 1px solid var(--border); }
.table td { padding: 10px 8px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table .num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.table .actions { text-align: right; white-space: nowrap; }
.table tr.flash td { background: var(--flash); }
.items-cell { color: var(--text-2); font-size: 13px; max-width: 420px; }
.pname { font-weight: 600; }
.badge { display: inline-block; padding: 1px 7px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.warn { background: var(--warn-bg); color: var(--warn-ink); }

.qty { display: inline-flex; align-items: center; gap: 4px; }
.qty-input { width: 56px; text-align: center; padding: 4px; }

.sell-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 16px; align-items: start; }
.checkout { display: grid; gap: 12px; position: sticky; top: 72px; }
.total-label { color: var(--muted); font-weight: 600; }
.total { font-size: 40px; font-weight: 800; font-variant-numeric: tabular-nums; }
.pay-toggle { display: flex; gap: 16px; }
.pay-toggle input { width: auto; }
.change { display: flex; justify-content: space-between; font-size: 18px; }
#changeAmt.neg { color: var(--bad); }

.field { display: grid; gap: 4px; font-size: 13px; color: var(--text-2); font-weight: 600; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.price-card { max-width: 640px; width: 100%; margin: 0 auto; }
.price-result { text-align: center; padding: 32px 8px 16px; display: grid; gap: 8px; }
.price-name { font-size: 26px; font-weight: 700; }
.price-big { font-size: 72px; font-weight: 800; color: var(--accent); font-variant-numeric: tabular-nums; line-height: 1.1; }
.price-stock { font-size: 18px; }
.price-stock.low strong { color: var(--bad); }

.toolbar { display: flex; gap: 8px; }
.toolbar input { flex: 1; }
.toolbar .btn { white-space: nowrap; }

.stock-form { display: grid; grid-template-columns: 2fr 1fr 1.5fr auto; gap: 12px; align-items: end; margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--border); }
.stock-product { display: grid; gap: 4px; }

.seg { display: inline-flex; background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 3px; justify-self: start; }
.seg button { border: 0; background: none; color: var(--text-2); font: inherit; font-weight: 600; padding: 6px 12px; border-radius: 6px; cursor: pointer; }
.seg button.active { background: var(--accent); color: var(--accent-ink); }

.kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.kpi { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.kpi-label { color: var(--text-2); font-size: 13px; font-weight: 600; }
.kpi-value { font-size: 28px; font-weight: 800; margin-top: 4px; font-variant-numeric: tabular-nums; }
.kpi-note { color: var(--muted); font-size: 12px; margin-top: 2px; }
.report-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

.chart { width: 100%; overflow: hidden; }
.chart svg { display: block; }
.chart .bar { fill: var(--series-1); }
.chart .grid { stroke: var(--grid); stroke-width: 1; }
.chart .axis { fill: var(--muted); font-size: 11px; }
.chart .val { fill: var(--text); font-size: 12px; font-weight: 600; }
.chart .hit { fill: transparent; cursor: default; }
.chart .hit:hover { fill: var(--text); fill-opacity: .04; }
details { margin-top: 12px; }
summary { cursor: pointer; color: var(--text-2); font-size: 13px; font-weight: 600; }

.chart-tip {
  position: fixed; z-index: 20; pointer-events: none;
  background: var(--surface); color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 10px; font-size: 13px; box-shadow: 0 4px 16px rgb(0 0 0 / .12);
}
.tip-title { font-weight: 700; margin-bottom: 2px; }

dialog { border: 1px solid var(--border); border-radius: 14px; padding: 0; background: var(--surface); color: var(--text); width: min(520px, calc(100vw - 32px)); }
dialog::backdrop { background: rgb(0 0 0 / .4); }
.dialog-form { display: grid; gap: 12px; padding: 20px; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; }

.toasts { position: fixed; bottom: 16px; right: 16px; display: grid; gap: 8px; z-index: 30; max-width: calc(100vw - 32px); }
.toast { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-radius: 10px; background: var(--surface); border: 1px solid var(--border); border-left: 5px solid var(--accent); box-shadow: 0 4px 16px rgb(0 0 0 / .12); font-weight: 600; }
.toast-success { border-left-color: var(--good); }
.toast-error { border-left-color: var(--bad); }
.toast-warn { border-left-color: var(--warn-ink); }

@media (max-width: 860px) {
  .sell-layout, .report-grid { grid-template-columns: 1fr; }
  .checkout { position: static; }
  .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stock-form { grid-template-columns: 1fr 1fr; }
  .stock-product { grid-column: 1 / -1; }
  .topbar { flex-wrap: wrap; }
  .tabs { order: 3; flex-basis: 100%; }
  .brand { flex: 1; }
}

/* ---------- SaaS shell: auth, market switcher, my markets ---------- */
.auth-view { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.auth-card { width: min(420px, 100%); display: grid; gap: 14px; padding: 24px; }
.auth-card form { display: grid; gap: 12px; }
.auth-head { display: flex; justify-content: space-between; align-items: center; }
.auth-head .brand { font-size: 22px; }
.auth-card p { margin: 0; }
.auth-seg { justify-self: stretch; display: grid; grid-template-columns: 1fr 1fr; }

.market-select { width: auto; max-width: 220px; font-weight: 600; padding: 7px 10px; }
.user-box { display: flex; align-items: center; gap: 8px; }
.user-name { font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 160px; }
.grow { flex: 1; margin: 0; align-self: center; }
.onboard { text-align: center; padding: 32px 16px; display: grid; gap: 8px; justify-items: center; }
.onboard p { margin: 0 0 8px; max-width: 460px; }

.market-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.market-card { display: grid; gap: 12px; }
.market-card.current { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.market-card h3 { margin: 0; font-size: 17px; }
.market-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.market-stats .lbl { color: var(--muted); font-size: 12px; font-weight: 600; }
.market-stats .v { font-size: 20px; font-weight: 800; font-variant-numeric: tabular-nums; }
.market-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.tabs button:disabled { opacity: .4; cursor: not-allowed; }

@media (max-width: 860px) {
  .user-name { display: none; }
  .market-select { flex: 1; max-width: none; }
}

/* ---------- camera barcode scanning ---------- */
.cam-btn { display: inline-flex; align-items: center; justify-content: center; padding: 8px 12px; flex: none; }
.cam-btn[hidden] { display: none !important; }
.input-row { display: flex; gap: 8px; }
.input-row input { flex: 1; min-width: 0; }

.camera-dialog {
  width: min(560px, 100vw); max-width: 100vw; max-height: 100dvh;
  padding: 0; overflow: hidden; background: #000; color: #fff; border: 0;
}
.camera-dialog::backdrop { background: rgb(0 0 0 / .8); }
.camera-view { position: relative; aspect-ratio: 4 / 3; background: #000; overflow: hidden; }
.camera-view video { width: 100%; height: 100%; object-fit: cover; display: block; }
.camera-frame {
  position: absolute; left: 5%; right: 5%; top: 25%; bottom: 25%;
  border: 3px solid rgb(255 255 255 / .9); border-radius: 12px;
  box-shadow: 0 0 0 100vmax rgb(0 0 0 / .45);
}
.camera-line {
  position: absolute; left: 6%; right: 6%; top: 50%; height: 2px;
  background: #ff4d4d; box-shadow: 0 0 8px #ff4d4d;
  animation: camera-scan 1.8s ease-in-out infinite alternate;
}
@keyframes camera-scan { from { transform: translateY(-40px); } to { transform: translateY(40px); } }
@media (prefers-reduced-motion: reduce) { .camera-line { animation: none; } }
.camera-bar { display: grid; gap: 10px; padding: 14px 16px 16px; background: #111; }
.camera-status { min-height: 1.4em; color: #ddd; font-weight: 600; }
.camera-status.ok { color: #7ee2a8; }
.camera-status.error { color: #ff9b9b; }
.camera-actions { display: flex; gap: 8px; justify-content: flex-end; }
.camera-actions .btn { background: #2a2a28; color: #fff; border-color: #3a3a38; }
.camera-actions .btn.primary { background: var(--accent); border-color: var(--accent); }
#cameraTorch.active { background: #f2c46b; color: #111; }

@media (max-width: 860px) {
  .camera-dialog { width: 100vw; height: 100dvh; max-height: 100dvh; margin: 0; border-radius: 0; display: none; }
  .camera-dialog[open] { display: flex; flex-direction: column; }
  .camera-view { flex: 1; aspect-ratio: auto; min-height: 0; }
  .camera-actions .btn { flex: 1; padding: 14px; font-size: 16px; }
}

/* ---------- Excel import ---------- */
.import-dialog { width: min(880px, calc(100vw - 32px)); max-height: calc(100dvh - 32px); }
.import-dialog h3 { font-size: 14px; margin: 8px 0 0; }
.import-pick { display: grid; gap: 14px; justify-items: start; }
.import-pick p { margin: 0; }
.file-pick { display: flex; align-items: center; gap: 12px; cursor: pointer; }
.file-pick input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.file-pick:focus-within .btn { outline: 2px solid var(--accent); outline-offset: 2px; }
.import-map { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 10px; }
.import-map select { padding: 7px 8px; }
.import-existing { border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px 10px; display: grid; gap: 6px; margin: 0; }
.import-existing legend { font-size: 13px; font-weight: 600; color: var(--text-2); padding: 0 4px; }
.import-existing input { width: auto; }
.import-summary { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { display: inline-block; padding: 3px 10px; border-radius: 999px; background: var(--bg); border: 1px solid var(--border); font-size: 13px; font-weight: 600; }
.chip.ok { border-color: var(--good); color: var(--good); }
.chip.bad { border-color: var(--bad); color: var(--bad); }
#importPreview td { padding: 7px 8px; font-size: 14px; }
#importPreview .badge { white-space: normal; }
.import-errors { margin: 0; }
.import-errors ul { margin: 8px 0 0; padding-left: 18px; max-height: 180px; overflow: auto; font-size: 13px; color: var(--text-2); }
.import-result p { margin: 4px 0 8px; font-weight: 600; }
.import-dialog { overflow-y: auto; }
.import-dialog .dialog-form > *, #importReview > * { min-width: 0; }
#importReview { display: grid; gap: 12px; min-width: 0; }
@media (max-width: 860px) {
  .import-map { grid-template-columns: 1fr 1fr; }
  .import-dialog .dialog-actions { flex-wrap: wrap; }
  .import-dialog .dialog-actions .btn { flex: 1 1 auto; }
}