:root {
  --bg: #f5f6f8;
  --panel: #ffffff;
  --text: #1d2025;
  --muted: #6b7280;
  --border: #e3e5e9;
  --accent: #0f766e;
  --accent-soft: #e6f4f2;
  --danger: #b42318;
}

* { box-sizing: border-box; }

html, body { margin: 0; height: 100%; }

body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.4 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

#app { display: flex; flex-direction: column; height: 100%; }

/* ---------- Top bar ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 16px; background: var(--panel); border-bottom: 1px solid var(--border);
}
.topbar h1 { font-size: 18px; margin: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.topbar-actions { display: flex; gap: 8px; }

/* ---------- Buttons ---------- */
.btn {
  font: inherit; border: 1px solid var(--border); background: var(--panel); color: var(--text);
  padding: 8px 14px; border-radius: 8px; cursor: pointer;
}
.btn:hover { border-color: #c9ccd2; }
.btn-ghost { background: transparent; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-primary:hover { filter: brightness(1.08); border-color: var(--accent); }
.btn-primary:disabled { opacity: .45; cursor: not-allowed; }
.btn-danger { color: var(--danger); border-color: #f1c4bf; }
.btn-sm { padding: 4px 10px; font-size: 13px; }
.btn-lg { padding: 14px; font-size: 17px; font-weight: 600; width: 100%; }

/* ---------- Layout ---------- */
.layout {
  flex: 1; min-height: 0;
  display: grid; grid-template-columns: 1fr 360px;
}
.menu-panel { padding: 16px; overflow: auto; }
.cart-panel {
  background: var(--panel); border-left: 1px solid var(--border);
  display: flex; flex-direction: column; padding: 16px; gap: 12px; min-height: 0;
}

/* ---------- Menu ---------- */
.menu-tools { display: flex; gap: 12px; align-items: center; margin-bottom: 10px; }
.menu-tools input[type=search] {
  flex: 1; font: inherit; padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px; background: var(--panel);
}
.edit-toggle { font-size: 14px; color: var(--muted); white-space: nowrap; display: flex; gap: 6px; align-items: center; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.chip {
  font: inherit; font-size: 13px; padding: 5px 12px; border-radius: 999px;
  border: 1px solid var(--border); background: var(--panel); cursor: pointer;
}
.chip.active { background: var(--accent); color: #fff; border-color: var(--accent); }

.menu-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; }
.menu-item {
  position: relative; text-align: left; font: inherit;
  background: var(--panel); border: 1px solid var(--border); border-radius: 10px;
  padding: 12px; cursor: pointer; min-height: 78px;
  display: flex; flex-direction: column; justify-content: space-between; gap: 6px;
}
.menu-item:hover { border-color: var(--accent); }
.menu-item:active { transform: scale(.98); }
.menu-item .name { font-weight: 600; word-break: break-word; }
.menu-item .price { color: var(--accent); font-weight: 600; }
.menu-item .badge {
  position: absolute; top: -7px; right: -7px; background: var(--accent); color: #fff;
  font-size: 12px; font-weight: 700; min-width: 22px; height: 22px; border-radius: 11px;
  display: grid; place-items: center; padding: 0 6px;
}
body.editing .menu-item { border-style: dashed; }
body.editing .menu-item::after { content: "✎"; position: absolute; bottom: 8px; right: 10px; color: var(--muted); }

.empty { color: var(--muted); text-align: center; padding: 24px 8px; }

/* ---------- Cart ---------- */
.cart-head { display: flex; justify-content: space-between; align-items: center; }
.cart-head h2 { margin: 0; font-size: 17px; }
.cart-list { flex: 1; overflow: auto; min-height: 80px; border-top: 1px solid var(--border); }
.cart-line {
  display: grid; grid-template-columns: 1fr auto auto; gap: 8px; align-items: center;
  padding: 9px 0; border-bottom: 1px solid var(--border);
}
.cart-line .ln-name { font-weight: 500; }
.cart-line .ln-rate { color: var(--muted); font-size: 13px; }
.cart-line .ln-amt { font-weight: 600; min-width: 64px; text-align: right; font-variant-numeric: tabular-nums; }
.qty { display: flex; align-items: center; gap: 4px; }
.qty button {
  width: 28px; height: 28px; border-radius: 6px; border: 1px solid var(--border);
  background: var(--panel); font-size: 16px; cursor: pointer; line-height: 1;
}
.qty input {
  width: 38px; text-align: center; font: inherit; border: 1px solid var(--border); border-radius: 6px; padding: 3px 0;
}

.discount-row { display: flex; align-items: center; gap: 8px; }
.discount-row label { flex: 1; color: var(--muted); }
.discount-row input, .discount-row select {
  font: inherit; padding: 6px 8px; border: 1px solid var(--border); border-radius: 6px; background: var(--panel);
}
.discount-row input { width: 90px; text-align: right; }

.totals { font-variant-numeric: tabular-nums; }
.totals .row { display: flex; justify-content: space-between; padding: 2px 0; color: var(--muted); }
.totals .grand {
  color: var(--text); font-size: 22px; font-weight: 700;
  border-top: 1px solid var(--border); margin-top: 6px; padding-top: 8px;
}

.printer-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  font-size: 13px; color: var(--muted);
}
.printer-bar[hidden] { display: none; }
#printerStatus.ok { color: var(--accent); font-weight: 600; }

/* ---------- Dialogs ---------- */
dialog {
  border: none; border-radius: 12px; padding: 20px; width: min(420px, calc(100vw - 32px));
  box-shadow: 0 20px 50px rgba(0,0,0,.2);
}
dialog::backdrop { background: rgba(0,0,0,.35); }
dialog h3 { margin: 0 0 14px; }
dialog form { display: flex; flex-direction: column; gap: 10px; }
dialog label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
dialog input, dialog textarea {
  font: inherit; color: var(--text); padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px;
}
dialog h4 { margin: 8px 0 0; font-size: 14px; border-top: 1px solid var(--border); padding-top: 12px; }
dialog select { font: inherit; color: var(--text); padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; background: var(--panel); }
dialog label.check { flex-direction: row; align-items: center; gap: 8px; align-self: end; padding-bottom: 10px; }
dialog form { max-height: calc(100vh - 80px); overflow: auto; }
#diagDialog { width: min(520px, calc(100vw - 32px)); }
.diag-help { margin: 0; font-size: 13px; color: var(--muted); }
.diag-status { font-weight: 600; }
.diag-channels { display: flex; flex-direction: column; gap: 6px; }
.diag-ch {
  display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap;
  border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px;
}
.diag-ch.in-use { border-color: var(--accent); background: var(--accent-soft); }
.diag-uuid { font: 12px/1.3 ui-monospace, Menlo, monospace; word-break: break-all; }
.diag-meta { font-size: 12px; color: var(--muted); }
.diag-actions { display: flex; gap: 6px; }
.tag { font: 600 11px system-ui, sans-serif; background: var(--accent); color: #fff; border-radius: 4px; padding: 1px 5px; }
.diag-log {
  margin: 0; min-height: 60px; max-height: 140px; overflow: auto; white-space: pre-wrap;
  font: 12px/1.4 ui-monospace, Menlo, monospace; background: var(--bg); border-radius: 8px; padding: 8px;
}
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.dialog-actions { display: flex; gap: 8px; margin-top: 6px; }
.spacer { flex: 1; }

/* ---------- Receipt (hidden on screen) ---------- */
#receipt { display: none; }

/* ---------- Mobile ---------- */
@media (max-width: 760px) {
  .layout { grid-template-columns: 1fr; grid-template-rows: auto auto; overflow: auto; }
  .menu-panel { overflow: visible; }
  .cart-panel { border-left: none; border-top: 1px solid var(--border); }
  .cart-list { max-height: none; }
  .menu-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
}

/* ---------- 58 mm thermal print ---------- */
@page { size: 58mm auto; margin: 0; }

@media print {
  html, body { background: #fff; height: auto; }
  body > *:not(#receipt) { display: none !important; }

  #receipt {
    display: block;
    width: 48mm;
    margin: 0 auto;
    padding: 2mm 0 6mm;
    color: #000;
    font: 9pt/1.25 "Courier New", Courier, monospace;
  }
  #receipt * { color: #000; background: none; }
  #receipt .c { text-align: center; }
  #receipt .shop { font-size: 12pt; font-weight: 700; }
  #receipt .small { font-size: 8pt; }
  #receipt .sep { border-top: 1px dashed #000; margin: 1.5mm 0; }
  #receipt .row { display: flex; justify-content: space-between; gap: 2mm; }
  #receipt .row span:last-child { text-align: right; white-space: nowrap; }
  #receipt .item-name { word-break: break-word; }
  #receipt .item-calc { padding-left: 2mm; }
  #receipt .total { font-size: 11pt; font-weight: 700; }
}