:root {
  color-scheme: dark;
  --bg: #050505;
  --panel: #151515;
  --paper: #f4f4f4;
  --muted: #a3a3a3;
  --signal: #ffffff;
  --line: rgb(255 255 255 / 12%);
  font-family: 'Segoe UI', sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px), var(--bg);
  background-size: 4rem 4rem;
  color: var(--paper);
}

button,
a {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  border: 1px solid var(--line);
  padding: 0.75rem 1rem;
  background: transparent;
  color: var(--paper);
  cursor: pointer;
}

button:hover,
button:focus-visible {
  border-color: var(--signal);
}

button:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

.demo-shell {
  width: min(calc(100% - 2rem), 80rem);
  margin: 0 auto;
}

.demo-nav {
  min-height: 4.5rem;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.demo-nav a {
  color: var(--muted);
  font-size: 0.75rem;
}

.demo-badge {
  border: 1px solid var(--signal);
  padding: 0.35rem 0.5rem;
  color: var(--signal);
  font: 600 0.58rem/1 monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.demo-head {
  padding-block: clamp(4rem, 10vw, 8rem);
  display: grid;
  grid-template-columns: 1fr 0.65fr;
  align-items: end;
  gap: 3rem;
}

.demo-kicker {
  margin: 0 0 1rem;
  color: var(--signal);
  font: 600 0.62rem/1 monospace;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  font-family: 'Arial Narrow', 'Segoe UI', sans-serif;
  text-transform: uppercase;
}

h1 {
  max-width: 10ch;
  margin-bottom: 0;
  font-size: clamp(4rem, 10vw, 8rem);
  line-height: 0.8;
}

.demo-intro {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.workspace {
  margin-bottom: 5rem;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel) 94%, transparent);
}

.workspace-bar {
  min-height: 4rem;
  border-bottom: 1px solid var(--line);
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.workspace-bar p {
  margin: 0;
  color: var(--muted);
  font: 500 0.64rem/1 monospace;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.workspace-actions {
  display: flex;
  gap: 0.5rem;
}

.primary {
  border-color: var(--signal);
  background: var(--signal);
  color: var(--bg);
  font-weight: 700;
}

.workspace-body {
  padding: clamp(1rem, 3vw, 2.5rem);
}

.summary-grid {
  margin-bottom: 2rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
}

.summary-grid article {
  min-height: 8rem;
  padding: 1.25rem;
  background: var(--bg);
}

.summary-grid small {
  color: var(--muted);
  font: 500 0.58rem/1 monospace;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.summary-grid strong {
  margin-top: 1.8rem;
  display: block;
  font:
    600 2.6rem/0.8 'Arial Narrow',
    'Segoe UI',
    sans-serif;
}

.summary-grid strong[data-tone='ok'] {
  color: var(--signal);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.75rem;
}

.data-table th,
.data-table td {
  border-bottom: 1px solid var(--line);
  padding: 1rem 0.75rem;
  text-align: left;
}

.data-table th {
  color: var(--muted);
  font: 500 0.58rem/1 monospace;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.data-table td:last-child {
  text-align: right;
}

.status {
  color: var(--muted);
  font: 500 0.6rem/1 monospace;
}

.status.ok,
[data-status='approved'] {
  color: var(--paper);
  font-weight: 700;
}

.status.warn,
[data-status='pending'] {
  color: #b5b5b5;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

[data-status='rejected'] {
  color: #858585;
  text-decoration: line-through;
}

.data-table tr.is-checked {
  background: rgb(255 255 255 / 5%);
}

.counter-layout {
  display: grid;
  grid-template-columns: 1fr 22rem;
  gap: 1.5rem;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.product {
  min-height: 9rem;
  padding: 1rem;
  display: grid;
  align-content: space-between;
  text-align: left;
}

.product span {
  color: var(--muted);
  font-size: 0.7rem;
}

.product strong {
  font:
    600 1.7rem/1 'Arial Narrow',
    'Segoe UI',
    sans-serif;
}

.receipt {
  min-height: 27rem;
  border: 1px solid var(--line);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
}

.receipt h2 {
  margin-bottom: 2rem;
  font-size: 1.7rem;
}

.cart-lines {
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
  list-style: none;
  color: var(--muted);
  font-size: 0.72rem;
}

.cart-lines li {
  display: flex;
  justify-content: space-between;
}

.cart-empty {
  color: var(--muted);
  font-size: 0.75rem;
}

.receipt-total {
  margin-top: auto;
  border-top: 1px solid var(--line);
  padding-top: 1rem;
  display: flex;
  align-items: end;
  justify-content: space-between;
}

.receipt-total span {
  color: var(--muted);
  font-size: 0.65rem;
}

.receipt-total strong {
  font:
    600 2rem/1 'Arial Narrow',
    'Segoe UI',
    sans-serif;
}

.queue {
  display: grid;
  gap: 0.75rem;
}

.queue-item {
  border: 1px solid var(--line);
  padding: 1rem;
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 1.5rem;
}

.queue-item p {
  margin: 0;
  font-size: 0.78rem;
}

.queue-item small {
  color: var(--muted);
  font: 500 0.58rem/1 monospace;
}

.queue-status {
  min-width: 5rem;
  font: 500 0.6rem/1 monospace;
  text-align: right;
  text-transform: uppercase;
}

.queue-actions {
  display: flex;
  gap: 0.5rem;
}

.demo-note {
  padding-block: 1.5rem 3rem;
  color: var(--muted);
  font: 500 0.62rem/1.7 monospace;
}

@media (max-width: 720px) {
  .demo-head,
  .counter-layout {
    grid-template-columns: 1fr;
  }

  .summary-grid {
    grid-template-columns: 1fr;
  }

  .workspace-bar {
    align-items: flex-start;
    flex-direction: column;
  }

  .data-table {
    display: block;
    overflow-x: auto;
  }

  .queue-item {
    grid-template-columns: 1fr auto;
  }

  .queue-actions {
    grid-column: 1 / -1;
  }
}

@media (max-width: 430px) {
  .product-grid {
    grid-template-columns: 1fr;
  }
}