body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  margin: 0;
  padding: 16px;
  background-color: #f0f0f0;
}

.screen {
  max-width: 700px;
  margin: 0 auto;
}

.hidden {
  display: none;
}

input, button {
  width: 100%;
  margin-bottom: 8px;
  padding: 12px;
  font-size: 16px;
}

button {
  background-color: #4a90e2;
  color: white;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
}

button:hover {
  background-color: #3a70b2;
}

.card {
  background-color: white;
  padding: 16px;
  border-radius: 8px;
  margin-top: 16px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

ul {
  list-style: none;
  padding: 0;
}

li {
  padding: 8px 0;
  border-bottom: 1px solid #eee;
}

.user-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  margin-top: 12px;
}

.user-chip {
  background: #e9f2ff;
  color: #1e3f66;
  border: 2px solid transparent;
}

.user-chip.selected {
  background: #4a90e2;
  color: #fff;
  border-color: #2f69ad;
}

.actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.actions button {
  flex: 1;
}

dialog {
  border: none;
  border-radius: 12px;
  padding: 0;
  width: min(92vw, 360px);
}

dialog::backdrop {
  background: rgba(0,0,0,0.35);
}

.qty-dialog-content {
  background: #fff;
  padding: 20px;
  border-radius: 12px;
}

.qty-control {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 20px 0;
}

.qty-control button {
  width: 72px;
  margin: 0;
}

#qty-value {
  font-size: 32px;
  font-weight: bold;
  min-width: 48px;
  text-align: center;
}

#payment-amount {
  margin-top: 12px;
}