:root {
  --primary: #0f172a;
  --secondary: #334155;
  --cta: #0369a1;
  --cta-hover: #075985;
  --bg: #f8fafc;
  --text: #020617;
  --muted: #475569;
  --line: #dbe5ef;
  --card: #ffffff;
  --card-soft: #f1f5f9;
  --danger: #b42318;
  --radius: 14px;
  --shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Nunito Sans", sans-serif;
  color: var(--text);
  background:
    linear-gradient(130deg, #eff6ff 0%, #f8fafc 42%, #ecfeff 100%);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
}

.skip-link:focus {
  left: 12px;
  top: 12px;
  z-index: 999;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 12px;
}

.app-shell {
  max-width: 1220px;
  margin: 0 auto;
  padding: 26px 16px 36px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 16px;
}

.app-header {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 12px;
}

.eyebrow {
  margin: 0;
  color: var(--cta);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  font-weight: 800;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  color: var(--primary);
  letter-spacing: -0.01em;
  font-family: "Rubik", sans-serif;
}

h1 {
  font-size: clamp(2rem, 4vw, 2.6rem);
}

h2 {
  font-size: 1.45rem;
}

.today {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  border-radius: 999px;
  border: 1px solid #bfdbfe;
  background: #fff;
  padding: 10px 14px;
  box-shadow: var(--shadow);
}

.today span {
  color: var(--muted);
  font-size: 0.88rem;
}

.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
  padding: 16px;
}

.products-panel {
  grid-row: span 2;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 12px;
}

.panel-head p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.category-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-bottom: 12px;
}

.category-tab {
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--secondary);
  font-weight: 800;
  cursor: pointer;
}

.category-tab[aria-selected="true"] {
  border-color: #93c5fd;
  background: #eff6ff;
  color: var(--cta);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(175px, 1fr));
  gap: 10px;
}

.product-card {
  border-radius: 12px;
  border: 1px solid #e2e8f0;
  background: var(--card-soft);
  padding: 10px;
  display: grid;
  gap: 8px;
}

.product-card.is-selected {
  border-color: #38bdf8;
  box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

.product-btn {
  min-height: 76px;
  border: 1px solid #bfdbfe;
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  text-align: left;
  padding: 10px;
  cursor: pointer;
  transition: border-color 200ms ease, transform 200ms ease;
}

.product-btn:hover {
  border-color: #38bdf8;
  transform: translateY(-1px);
}

.product-btn strong {
  display: block;
  margin-bottom: 4px;
  font-size: 1rem;
}

.product-btn span {
  color: var(--muted);
  font-size: 0.85rem;
}

.qty-controls {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.qty-controls button {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--primary);
  font-size: 1.1rem;
  cursor: pointer;
}

.qty-controls output {
  min-width: 44px;
  text-align: center;
  font-weight: 800;
}

.pick-btn {
  min-height: 36px;
  padding: 0 10px;
  border-radius: 8px;
  border: 1px solid #bfdbfe;
  background: #eff6ff;
  color: var(--cta);
  font-weight: 700;
  cursor: pointer;
}

.keypad-panel {
  margin-top: 12px;
  border: 1px solid #dbeafe;
  border-radius: 12px;
  background: #f8fbff;
  padding: 12px;
}

.keypad-head {
  margin-bottom: 8px;
}

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

.keypad-selected strong {
  color: var(--primary);
}

.keypad-display {
  margin-top: 8px;
  border: 1px solid #bfdbfe;
  border-radius: 10px;
  background: #fff;
  min-height: 52px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 0 12px;
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.keypad-shortcuts {
  margin-top: 8px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.keypad-shortcuts button {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--secondary);
  font-weight: 700;
  cursor: pointer;
}

.keypad-grid {
  margin-top: 8px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.keypad-grid button {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--primary);
  font-weight: 800;
  cursor: pointer;
}

.keypad-grid .apply {
  grid-column: 1 / -1;
  background: var(--cta);
  color: #fff;
  border: 0;
}

.keypad-grid .apply:disabled {
  background: #94a3b8;
  cursor: not-allowed;
}

.summary-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.metric {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--card-soft);
  padding: 12px;
}

.metric p {
  margin: 0 0 6px;
  color: var(--muted);
}

.metric strong {
  font-size: 1.35rem;
}

.summary-list,
.ledger-list {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.summary-list li {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  padding: 9px 10px;
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

.register-form {
  margin-top: 12px;
  display: grid;
  gap: 8px;
}

label {
  font-size: 0.9rem;
}

input,
select {
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  padding: 10px 12px;
  font-size: 0.95rem;
}

button {
  min-height: 44px;
  font: inherit;
}

#registerBtn {
  border: 0;
  border-radius: 10px;
  background: var(--cta);
  color: #fff;
  font-weight: 800;
  cursor: pointer;
}

#registerBtn:hover {
  background: var(--cta-hover);
}

.action-row {
  margin-top: 8px;
}

.ghost {
  width: 100%;
  border: 1px dashed #cbd5e1;
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
}

.status {
  min-height: 24px;
  margin: 10px 0 0;
  color: var(--cta);
  font-weight: 700;
}

.sync-status {
  min-height: 22px;
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

.status.error {
  color: var(--danger);
}

.ledger-tools {
  display: grid;
  gap: 8px;
  margin-bottom: 10px;
}

.ledger-list li {
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  padding: 10px;
}

.ledger-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
}

.ledger-head strong {
  font-size: 1.08rem;
}

.ledger-head time {
  color: var(--muted);
  font-size: 0.86rem;
}

.ledger-meta {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.ledger-actions {
  margin-top: 8px;
}

.cancel-btn {
  min-height: 36px;
  border: 1px solid #fecaca;
  border-radius: 8px;
  background: #fff1f2;
  color: #991b1b;
  padding: 0 10px;
  cursor: pointer;
}

.ledger-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 800;
}

.ledger-tag.canceled {
  color: #991b1b;
}

.empty-ledger {
  margin: 10px 0 0;
  color: var(--muted);
}

button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid #38bdf8;
  outline-offset: 1px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}

@media (max-width: 920px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .products-panel {
    grid-row: auto;
  }

  .category-tabs {
    grid-template-columns: 1fr;
  }
}