:root {
  color-scheme: light;
  --ink: #1b1b1b;
  --muted: #6d6a60;
  --line: #ded9ca;
  --paper: #fffdf7;
  --wash: #f5f1e6;
  --green: #1f6b3a;
  --green-2: #2f8a4e;
  --danger: #b53a2f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 20% 10%, rgba(47, 138, 78, 0.18), transparent 28rem),
    linear-gradient(145deg, #f8f5eb 0%, #eeeadf 50%, #fdfbf5 100%);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.shell {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 32px;
}

.checkout {
  width: min(100%, 520px);
  border: 1px solid rgba(88, 83, 69, 0.22);
  border-radius: 18px;
  background: rgba(255, 253, 247, 0.88);
  box-shadow: 0 24px 80px rgba(31, 42, 28, 0.15);
  backdrop-filter: blur(22px);
  padding: 28px;
}

.brand-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 12px;
  background: var(--green);
  color: white;
  font-weight: 800;
}

.eyebrow,
.label,
.details span {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 2px 0 0;
  font-size: 22px;
  line-height: 1.2;
}

.status {
  margin-top: 24px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--wash);
  padding: 14px 16px;
  color: var(--muted);
  font-size: 14px;
}

.status.error {
  border-color: rgba(181, 58, 47, 0.32);
  background: rgba(181, 58, 47, 0.08);
  color: var(--danger);
}

.panel {
  margin-top: 22px;
}

.hidden {
  display: none;
}

.summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 20px;
}

.amount {
  margin: 6px 0 0;
  font-size: 42px;
  font-weight: 760;
  letter-spacing: 0;
}

.pill {
  border: 1px solid rgba(31, 107, 58, 0.28);
  border-radius: 999px;
  background: rgba(31, 107, 58, 0.08);
  color: var(--green);
  padding: 7px 11px;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.details {
  display: grid;
  gap: 10px;
  margin: 20px 0;
}

.details div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.details strong {
  text-align: right;
}

.form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
  font: inherit;
  padding: 13px 14px;
}

input:focus {
  border-color: rgba(31, 107, 58, 0.6);
  outline: 3px solid rgba(31, 107, 58, 0.13);
}

.method-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 2px;
}

.method {
  border: 1px solid rgba(31, 107, 58, 0.24);
  border-radius: 999px;
  background: rgba(31, 107, 58, 0.08);
  color: var(--green);
  padding: 8px 11px;
  font-size: 12px;
  font-weight: 800;
}

button {
  margin-top: 8px;
  border: 0;
  border-radius: 12px;
  background: var(--green);
  color: white;
  cursor: pointer;
  font: inherit;
  font-weight: 800;
  padding: 14px 16px;
  transition: background 160ms ease, transform 160ms ease;
}

button:hover {
  background: var(--green-2);
}

button:active {
  transform: translateY(1px);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

@media (max-width: 560px) {
  .shell {
    padding: 16px;
  }

  .checkout {
    border-radius: 16px;
    padding: 22px;
  }

  .amount {
    font-size: 34px;
  }
}