:root {
  --bg: #f4f4f2; --card: #ffffff; --text: #161616; --muted: #6b6b68; --border: #e2e2de; --soft: #f7f7f5;
  --ink: #111111; --ink-text: #ffffff; --accent: #1d7a55; --accent-soft: #e5f3ec;
  --ok: #1d7a55; --ok-soft: #e5f3ec; --warn: #9a5b00; --warn-soft: #fff1d6; --crit: #b42318; --crit-soft: #fde8e6;
  --bar: #2b2b2b; --bar-fc: transparent; --radius: 14px; --shadow: 0 1px 2px rgba(0,0,0,.04);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #121212; --card: #1b1b1b; --text: #ececea; --muted: #9a9a96; --border: #2d2d2b; --soft: #222220;
    --ink: #ececea; --ink-text: #111; --accent: #4cc38a; --accent-soft: #15301f;
    --ok: #4cc38a; --ok-soft: #15301f; --warn: #f0b552; --warn-soft: #33270f; --crit: #ff7b6e; --crit-soft: #3a1714;
    --bar: #d6d6d2; color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { font-family: Inter, system-ui, -apple-system, "Segoe UI", sans-serif; background: var(--bg); color: var(--text); font-size: 14px; line-height: 1.45; }
a { color: inherit; }
h1 { font-size: 20px; margin: 0; } h2 { font-size: 16px; margin: 0 0 12px; } h3 { font-size: 14px; margin: 18px 0 8px; } h4 { margin: 0 0 8px; font-size: 13px; }
.hidden { display: none !important; }
.muted { color: var(--muted); } .small { font-size: 12px; } .center { text-align: center; } .b { font-weight: 650; }
.up { color: var(--ok); } .down { color: var(--crit); } .warn-t { color: var(--warn); }
.grow { flex: 1; }

/* ---------- shell */
#app { display: grid; grid-template-columns: 236px 1fr; min-height: 100vh; }
#sidebar { background: var(--ink); color: var(--ink-text); padding: 18px 12px; position: sticky; top: 0; height: 100vh; overflow: auto; display: flex; flex-direction: column; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) #sidebar { background: #0b0b0b; color: #ececea; } }
.brand { display: flex; gap: 10px; align-items: center; padding: 0 6px 16px; }
.brand strong { display: block; font-size: 15px; } .brand small { opacity: .65; font-size: 12px; }
.logo { width: 34px; height: 34px; border-radius: 10px; background: var(--accent); color: #fff; display: grid; place-items: center; font-weight: 800; }
.nav-group { margin-bottom: 14px; }
.nav-label { font-size: 11px; text-transform: uppercase; letter-spacing: .06em; opacity: .5; padding: 0 10px 4px; }
#nav a { display: block; padding: 8px 10px; border-radius: 8px; text-decoration: none; opacity: .85; }
#nav a:hover { background: rgba(255,255,255,.08); opacity: 1; }
#nav a.active { background: rgba(255,255,255,.14); opacity: 1; font-weight: 600; }
.side-foot { margin-top: auto; padding: 12px 6px 0; border-top: 1px solid rgba(255,255,255,.12); }
.side-foot .user strong { display: block; } .side-foot .user small { opacity: .6; }
.side-foot .ghost { color: inherit; border-color: rgba(255,255,255,.2); background: transparent; margin-top: 8px; }
.main-col { min-width: 0; }
#topbar { display: flex; align-items: center; gap: 12px; padding: 14px 24px; background: var(--card); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 5; }
#menuBtn { display: none; }
.top-actions { margin-left: auto; display: flex; gap: 8px; align-items: center; }
main { padding: 20px 24px 40px; max-width: 1500px; }
.loading { color: var(--muted); padding: 30px; }

/* ---------- basic controls */
button, .btn { font: inherit; border: 1px solid var(--border); background: var(--card); color: var(--text); padding: 9px 14px; border-radius: 9px; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; gap: 6px; }
button:hover, .btn:hover { border-color: var(--muted); }
button.primary, .btn.primary { background: var(--ink); color: var(--ink-text); border-color: var(--ink); }
button.danger { color: var(--crit); border-color: var(--crit); background: transparent; }
button.ghost, .btn.ghost { background: transparent; }
button.small, .btn.small { padding: 5px 10px; font-size: 12px; }
button.big { padding: 14px; font-size: 16px; justify-content: center; }
.icon-btn { padding: 4px 10px; font-size: 16px; line-height: 1; }
input, select, textarea { width: 100%; padding: 9px 11px; border: 1px solid var(--border); border-radius: 9px; background: var(--card); color: var(--text); font: inherit; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; }
.compact { width: auto; padding: 7px 10px; }
label { display: grid; gap: 4px; font-size: 12px; color: var(--muted); }
label.check { display: flex; gap: 8px; align-items: center; color: var(--text); font-size: 13px; }
label.check input { width: auto; }
label.inline { display: inline-flex; align-items: center; gap: 6px; }
.stack { display: grid; gap: 10px; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin: 6px 0 14px; }
.form-grid.three { grid-template-columns: repeat(3, 1fr) auto; } .form-grid.four { grid-template-columns: 2fr 1fr 1fr auto; } .form-grid.five { grid-template-columns: 1fr 2fr 1fr 1fr 1fr auto; }
.span-all { grid-column: 1 / -1; }
.row-actions { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 9px; overflow: hidden; background: var(--card); }
.seg button { border: 0; border-radius: 0; padding: 7px 12px; text-transform: capitalize; }
.seg button.on { background: var(--ink); color: var(--ink-text); }
.chips { display: flex; gap: 6px; flex-wrap: wrap; margin: 10px 0; }
.chip { border-radius: 999px; padding: 6px 12px; font-size: 13px; }
.chip.on { background: var(--ink); color: var(--ink-text); border-color: var(--ink); }

/* ---------- cards & layout */
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow); margin-bottom: 14px; min-width: 0; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 14px; }
.cards .card { margin: 0; }
.metric span { display: block; color: var(--muted); font-size: 12px; }
.metric strong { display: block; font-size: 24px; margin: 4px 0 2px; font-variant-numeric: tabular-nums; letter-spacing: -.01em; }
.metric small { color: var(--muted); font-size: 12px; }
.metric small.up { color: var(--ok); } .metric small.down { color: var(--crit); }
.metric.accent { border-color: var(--accent); background: var(--accent-soft); }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; } .two-col > .card { margin: 0 0 14px; }
.two-col.wide-left { grid-template-columns: 2fr 1fr; }
.three-col { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; } .three-col > .card { margin: 0 0 14px; }
.three-col.tight { gap: 10px; margin: 12px 0; }
.section-head { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 10px; }
.section-head h2 { margin: 0; }
.alert { padding: 12px 14px; border-radius: 10px; background: var(--soft); border: 1px solid var(--border); display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.alert.warn { background: var(--warn-soft); border-color: transparent; } .alert.crit { background: var(--crit-soft); border-color: transparent; color: var(--crit); }
.error { color: var(--crit); }
.empty { color: var(--muted); padding: 14px 0; }
ul.plain { list-style: none; margin: 0; padding: 0; }
ul.plain li { display: flex; justify-content: space-between; gap: 10px; padding: 7px 0; border-bottom: 1px solid var(--border); }
ul.plain li:last-child { border-bottom: 0; }
ul.plain li > span:last-child { white-space: nowrap; text-align: right; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; background: var(--soft); border: 1px solid var(--border); font-size: 11.5px; white-space: nowrap; }
.badge.ok { background: var(--ok-soft); color: var(--ok); border-color: transparent; }
.badge.warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.badge.crit { background: var(--crit-soft); color: var(--crit); border-color: transparent; }
.pill { font-size: 12px; padding: 6px 10px; border-radius: 999px; cursor: pointer; white-space: nowrap; }
.pill.ok { background: var(--ok-soft); color: var(--ok); } .pill.warn { background: var(--warn-soft); color: var(--warn); }

/* ---------- tables */
.table-wrap { overflow: auto; }
table { border-collapse: collapse; width: 100%; font-size: 13px; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 12px; white-space: nowrap; position: sticky; top: 0; background: var(--card); }
td.r, th.r { text-align: right; }
tr.click { cursor: pointer; } tr.click:hover td { background: var(--soft); }
tr.b td { font-weight: 650; }
.meta { font-size: 12px; color: var(--muted); }
td .meta.why { max-width: 460px; }
table.reorder input.qty { width: 80px; text-align: right; padding: 6px; }
table.reorder select { min-width: 190px; padding: 6px; }
table.edit input, table.edit select { padding: 6px; }
.bar-cell { display: flex; gap: 6px; align-items: center; justify-content: flex-end; }
.bar-cell span { display: inline-block; height: 6px; border-radius: 3px; background: var(--accent); max-width: 70px; }
td.heat { background: color-mix(in srgb, var(--accent) calc(var(--h) * 28%), transparent); }

/* ---------- chart */
.chart { position: relative; }
.chart svg text { font-size: 10px; fill: var(--muted); }
.chart .hit { fill: transparent; }
.chart .mark { fill: var(--bar); }
.chart .fc .mark { fill: var(--accent-soft); stroke: var(--accent); stroke-width: 1.5; stroke-dasharray: 3 2; }
.chart .bar.on .mark { opacity: .75; }
.chart-tip { position: absolute; pointer-events: none; opacity: 0; background: var(--ink); color: var(--ink-text); font-size: 12px; padding: 6px 9px; border-radius: 7px; white-space: nowrap; transition: opacity .1s; }
.legend { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }
.legend .sw { width: 10px; height: 10px; border-radius: 3px; background: var(--bar); display: inline-block; margin-left: 8px; }
.legend .sw.fc { background: var(--accent-soft); border: 1.5px dashed var(--accent); }

/* ---------- briefing */
.briefing ul { list-style: none; padding: 0; margin: 0; }
.briefing li { display: grid; grid-template-columns: 96px 1fr auto; gap: 12px; padding: 9px 0 9px 12px; border-bottom: 1px solid var(--border); border-left: 3px solid var(--border); margin-bottom: 4px; align-items: center; }
.briefing li.crit { border-left-color: var(--crit); } .briefing li.warn { border-left-color: var(--warn); }
.briefing .area { font-size: 11px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.briefing .ask { font-size: 12px; color: var(--accent); text-decoration: none; white-space: nowrap; }

/* ---------- POS */
.pos { display: grid; grid-template-columns: 1.6fr 1fr; gap: 14px; }
.pos.disabled { opacity: .45; pointer-events: none; }
.search-row { display: flex; gap: 8px; }
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 8px; max-height: calc(100vh - 290px); overflow: auto; padding-bottom: 4px; }
.product { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; text-align: left; padding: 12px; background: var(--soft); min-height: 86px; }
.product:hover { border-color: var(--ink); }
.product .name { font-weight: 600; } .product .price { font-size: 15px; font-variant-numeric: tabular-nums; } .product .meta { margin-top: auto; }
.product.out { opacity: .45; }
.pos-right { position: sticky; top: 72px; align-self: start; }
#cart { max-height: calc(100vh - 470px); min-height: 80px; overflow: auto; }
.cart-row { display: grid; grid-template-columns: 1fr auto 80px; gap: 10px; align-items: center; padding: 9px 0; border-bottom: 1px solid var(--border); }
.cart-row .qty { display: flex; align-items: center; gap: 6px; }
.cart-row .r { text-align: right; font-variant-numeric: tabular-nums; }
.checkout { display: grid; gap: 10px; margin-top: 14px; }
.total { display: flex; justify-content: space-between; align-items: baseline; font-size: 18px; }
.total strong { font-size: 28px; font-variant-numeric: tabular-nums; }
.pay-toggle { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.pay { justify-content: center; padding: 12px; } .pay.on { background: var(--ink); color: var(--ink-text); border-color: var(--ink); }
.cash-box { display: grid; gap: 6px; }
.quick { display: flex; gap: 6px; flex-wrap: wrap; }
.change { font-size: 16px; min-height: 22px; }
.cart-bar { display: none; }
@media (max-width: 1100px) {
  .cart-bar { display: flex; position: sticky; bottom: 10px; z-index: 4; justify-content: space-between; align-items: center; gap: 10px;
    background: var(--ink); color: var(--ink-text); padding: 14px 18px; border-radius: 12px; text-decoration: none; box-shadow: 0 8px 24px rgba(0,0,0,.2); order: 2; }
  .pos-right { order: 3; }
}
video.cam { width: 100%; border-radius: 10px; background: #000; }

/* ---------- shifts */
.denoms { display: grid; grid-template-columns: repeat(5, 1fr); gap: 6px; margin-bottom: 12px; }
.denoms label { font-size: 11px; } .denoms input { padding: 6px; }
.diff { font-size: 15px; min-height: 20px; }

/* ---------- receipt */
.receipt { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 12px; background: #fff; color: #000; width: 300px; max-width: 100%; margin: 6px auto; padding: 14px; border: 1px dashed #bbb; }
.receipt .c { text-align: center; } .receipt .rl { display: flex; justify-content: space-between; gap: 8px; }
.receipt .rl.sub { color: #555; font-size: 11px; } .receipt .big { font-size: 15px; } .receipt hr { border: 0; border-top: 1px dashed #999; margin: 6px 0; }
.receipt.voided { background: repeating-linear-gradient(-45deg, #fff, #fff 10px, #fdf0ef 10px, #fdf0ef 20px); }
#printArea { display: none; }
@media print {
  @page { size: 80mm auto; margin: 3mm; }
  body > *:not(#printArea) { display: none !important; }
  #printArea { display: block !important; }
  #printArea .receipt { border: 0; width: 100%; padding: 0; margin: 0; }
}

/* ---------- modal & toast */
#modal { position: fixed; inset: 0; z-index: 50; display: none; }
#modal.open { display: grid; place-items: center; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(0,0,0,.45); }
.modal-card { position: relative; background: var(--card); color: var(--text); border-radius: 16px; padding: 22px; width: min(520px, calc(100vw - 24px)); max-height: calc(100vh - 40px); overflow: auto; box-shadow: 0 20px 60px rgba(0,0,0,.3); }
.modal-card.wide { width: min(980px, calc(100vw - 24px)); }
.modal-close { position: absolute; right: 12px; top: 12px; border: 0; }
.modal-card > .rl { display: flex; justify-content: space-between; padding: 10px; font-size: 15px; }
pre.mail { white-space: pre-wrap; background: var(--soft); padding: 12px; border-radius: 10px; font-size: 12.5px; }
#toast { position: fixed; right: 20px; bottom: 20px; background: var(--ink); color: var(--ink-text); padding: 12px 16px; border-radius: 10px; opacity: 0; transform: translateY(10px); transition: .2s; pointer-events: none; z-index: 60; max-width: 420px; }
#toast.show { opacity: 1; transform: none; } #toast.error { background: var(--crit); color: #fff; }

/* ---------- login */
.login { min-height: 100vh; display: grid; place-items: center; padding: 20px; background: var(--ink); }
.login-card { background: var(--card); border-radius: 20px; padding: 26px; width: min(520px, 100%); }
.login-card .brand { padding: 0 0 18px; }
.user-tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 8px; }
.user-tile { flex-direction: column; padding: 14px 8px; gap: 4px; justify-content: center; }
.user-tile small { color: var(--muted); font-size: 11px; }
.user-tile.sel { border-color: var(--accent); background: var(--accent-soft); }
.avatar { width: 38px; height: 38px; border-radius: 50%; background: var(--ink); color: var(--ink-text); display: grid; place-items: center; font-weight: 700; }
.pinpad { margin-top: 16px; display: grid; gap: 10px; justify-items: center; }
.pin-dots { font-size: 22px; letter-spacing: 8px; }
.keys { display: grid; grid-template-columns: repeat(3, 76px); gap: 8px; }
.key { justify-content: center; font-size: 20px; padding: 14px 0; }

/* ---------- AI */
.ai-wrap { max-width: 1000px; }
.ai-head { display: flex; justify-content: space-between; gap: 12px; align-items: flex-start; }
.ai-head p { margin: 0; }
.ai-log { display: grid; gap: 10px; margin: 10px 0 80px; }
.msg { padding: 12px 14px; border-radius: 12px; max-width: 100%; }
.msg.q { background: var(--ink); color: var(--ink-text); justify-self: end; max-width: 80%; }
.msg.a { background: var(--card); border: 1px solid var(--border); }
.msg.a p { margin: 0 0 8px; }
.ai-table { margin: 10px 0; } .ai-table h4 { color: var(--muted); }
.ai-form { position: sticky; bottom: 12px; display: flex; gap: 8px; background: var(--card); padding: 8px; border-radius: 12px; border: 1px solid var(--border); box-shadow: 0 6px 24px rgba(0,0,0,.08); }
.explainer p { margin: 0; }

/* ---------- responsive */
@media (max-width: 1100px) {
  .pos { grid-template-columns: 1fr; } .pos-right { position: static; }
  .three-col { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 860px) {
  #app { grid-template-columns: 1fr; }
  #sidebar { position: fixed; z-index: 40; left: 0; top: 0; width: 260px; transform: translateX(-100%); transition: transform .2s; }
  body.nav-open #sidebar { transform: none; box-shadow: 0 0 60px rgba(0,0,0,.4); }
  #menuBtn { display: inline-flex; }
  #topbar { padding: 10px 16px; flex-wrap: wrap; }
  main { padding: 14px 16px 40px; }
  .two-col, .two-col.wide-left, .three-col { grid-template-columns: 1fr; }
  .form-grid, .form-grid.three, .form-grid.four, .form-grid.five { grid-template-columns: 1fr; }
  .briefing li { grid-template-columns: 1fr; gap: 4px; }
  .denoms { grid-template-columns: repeat(3, 1fr); }
  .product-grid { max-height: none; }
  #cart { max-height: none; }
}
@media (max-width: 520px) {
  .top-actions #lockBtn { display: none; }
  .metric strong { font-size: 20px; }
  .cards { grid-template-columns: 1fr 1fr; }
}

/* ---------- environment banner, TSE on receipts, devices */
.env-banner { background: var(--warn-soft); color: var(--warn); text-align: center; font-weight: 600; font-size: 13px; padding: 7px 12px; }
body[data-env="production"] .env-banner { background: var(--crit-soft); color: var(--crit); }
.receipt .tse { font-size: 10px; word-break: break-all; }
.receipt .tse .rl span:first-child { white-space: nowrap; }
.receipt .qr { display: block; width: 150px; height: 150px; margin: 8px auto 2px; }
.receipt .qr svg { width: 100%; height: 100%; }
.receipt .warn-box { border: 1px solid #000; padding: 4px; text-align: center; font-weight: 700; margin: 4px 0; }
.pair-code { font-family: ui-monospace, Menlo, monospace; font-size: 34px; letter-spacing: 4px; text-align: center; padding: 14px; background: var(--soft); border-radius: 12px; }