:root {
  --ink: #1d2433;
  --muted: #5d6779;
  --line: #dfe3ea;
  --panel: #f6f7f9;
  --accent: #1f6feb;
  --ok: #1a7f37;
  --bad: #c62828;
  font-family:
    system-ui,
    -apple-system,
    "Segoe UI",
    sans-serif;
  color: var(--ink);
}

body {
  margin: 0;
  background: #fff;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 32px;
  border-bottom: 1px solid var(--line);
}

.brand {
  font-weight: 700;
}

.step,
.viewer {
  color: var(--muted);
}

.viewer {
  margin-left: auto;
}

.badge {
  min-width: 20px;
  padding: 0 6px;
  border-radius: 10px;
  background: var(--accent);
  color: #fff;
  font-size: 12px;
  line-height: 20px;
  text-align: center;
}

.checkout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 32px;
  max-width: 960px;
  margin: 32px auto;
  padding: 0 32px;
}

h1,
h2 {
  margin: 0 0 16px;
  font-size: 20px;
}

.items {
  list-style: none;
  margin: 0;
  padding: 0;
}

.item {
  display: grid;
  grid-template-columns: 1fr auto 90px;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.gift-wrap {
  margin-top: 16px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  font-size: 14px;
  padding: 8px 14px;
  cursor: pointer;
}

.qty {
  color: var(--muted);
}

.price {
  text-align: right;
}

.summary {
  background: var(--panel);
  border-radius: 8px;
  padding: 24px;
}

.discount label {
  display: block;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 6px;
}

.discount-row {
  display: flex;
  gap: 8px;
}

.discount input {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 15px;
}

.discount button,
.pay {
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  padding: 8px 14px;
  cursor: pointer;
}

.discount button:disabled {
  opacity: 0.6;
  cursor: progress;
}

.status {
  min-height: 20px;
  margin: 8px 0 0;
  font-size: 14px;
}

.status.ok {
  color: var(--ok);
}

.status.bad {
  color: var(--bad);
}

.totals {
  margin: 20px 0;
}

.totals div {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
}

.totals dt,
.totals dd {
  margin: 0;
}

.totals .total {
  border-top: 1px solid var(--line);
  margin-top: 6px;
  padding-top: 12px;
  font-weight: 700;
  font-size: 18px;
}

.pay {
  width: 100%;
  padding: 12px;
}