.checkout-main {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 3rem;
}

.checkout-hero,
.checkout-panel {
  position: relative;
  background: var(--sheet);
  box-shadow: var(--shadow);
}

.checkout-hero::before,
.checkout-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(17, 17, 17, 0.08);
  pointer-events: none;
}

.checkout-hero {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: start;
  padding: 2rem;
  margin-bottom: 2rem;
  background:
    linear-gradient(180deg, rgba(243, 234, 84, 0.18), transparent 8rem),
    var(--sheet);
}

.checkout-panel--special {
  margin-bottom: 1.5rem;
  background:
    radial-gradient(circle at top right, rgba(255, 93, 71, 0.1), transparent 15rem),
    linear-gradient(180deg, rgba(243, 234, 84, 0.2), transparent 8rem),
    var(--sheet);
}

.checkout-hero h1,
.checkout-panel h2 {
  margin: 0;
  font-family: "RiccioneSerial", var(--ui-font);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.checkout-hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  line-height: 0.92;
  max-width: 14ch;
}

.checkout-hero__subtitle,
.checkout-panel__copy,
.summary-note__body,
.checkout-callout__body {
  margin: 0.75rem 0 0;
}

.checkout-hero__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.25rem;
}

.checkout-chip {
  display: inline-flex;
  align-items: center;
  min-height: 2rem;
  padding: 0.15rem 0.7rem;
  border: 1.5px solid var(--ink);
  background: transparent;
  font-family: "RiccioneSerial", var(--ui-font);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.checkout-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  gap: 1.5rem;
}

.special-feature__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.2rem;
}

.special-feature__includes {
  margin: 1rem 0 0;
  max-width: 60rem;
}

.checkout-panel {
  padding: 1.5rem;
}

.checkout-panel--summary {
  align-self: start;
}

.checkout-form {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}

.checkout-form__row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.checkout-form__row-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.quantity-picker {
  display: grid;
  grid-template-columns: 3rem 1fr 3rem;
  align-items: center;
  border: 2px solid rgba(17, 17, 17, 0.18);
}

.quantity-picker__button,
.quantity-picker__value {
  min-height: 3rem;
  border: 0;
  background: transparent;
  font: inherit;
  color: inherit;
  text-align: center;
}

.quantity-picker__button {
  cursor: pointer;
  font-family: "RiccioneSerial", var(--ui-font);
  font-size: 1.5rem;
}

.payment-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.crypto-wallet {
  display: grid;
  grid-template-columns: minmax(180px, 220px) minmax(0, 1fr);
  gap: 1rem;
  align-items: center;
  padding: 1rem;
  background:
    linear-gradient(180deg, rgba(255, 228, 10, 0.18), transparent 8rem),
    var(--sheet);
  border: 1px solid rgba(17, 17, 17, 0.08);
}

.crypto-wallet__art {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0.6rem;
  background: #ffffff;
  border: 2px solid rgba(17, 17, 17, 0.12);
}

.crypto-wallet__copy {
  display: grid;
  gap: 0.55rem;
}

.crypto-wallet__label,
.crypto-wallet__network,
.crypto-wallet__hint,
.crypto-wallet__note {
  margin: 0;
}

.crypto-wallet__label {
  font-family: "RiccioneSerial", var(--ui-font);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.crypto-wallet__network {
  font-size: 1.05rem;
}

.crypto-wallet__address {
  display: inline-flex;
  width: fit-content;
  max-width: 100%;
  padding: 0.5rem 0.65rem;
  overflow-wrap: anywhere;
  background: rgba(17, 17, 17, 0.06);
  border: 1px solid rgba(17, 17, 17, 0.12);
}

.crypto-wallet__hint,
.crypto-wallet__note {
  color: rgba(17, 17, 17, 0.72);
}

.payment-option {
  display: grid;
  gap: 0.35rem;
  min-height: 7rem;
  padding: 1rem;
  border: 2px solid rgba(17, 17, 17, 0.18);
  background: var(--sheet);
  text-align: left;
  cursor: pointer;
  transition: transform 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.payment-option strong,
.checkout-callout__label,
.summary-note__label {
  font-family: "RiccioneSerial", var(--ui-font);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.payment-option small {
  font: inherit;
  color: rgba(17, 17, 17, 0.68);
}

.payment-option:hover,
.payment-option.is-active {
  transform: translateY(-1px);
  border-color: var(--ink);
}

.payment-option.is-active {
  background: rgba(243, 234, 84, 0.2);
}

.checkout-callout,
.summary-note {
  padding: 1rem;
  background: var(--soft);
  border: 1px solid rgba(17, 17, 17, 0.08);
}

.checkout-callout__label,
.summary-note__label {
  margin: 0;
}

.checkout-submit {
  width: 100%;
}

.checkout-feedback {
  min-height: 1.5rem;
  margin: 0;
  font-family: "RiccioneSerial", var(--ui-font);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.summary-grid {
  display: grid;
  gap: 0.8rem;
  margin: 1.5rem 0;
}

.summary-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid rgba(17, 17, 17, 0.08);
}

.summary-row dt {
  font-family: "RiccioneSerial", var(--ui-font);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.summary-row dt,
.summary-row dd {
  margin: 0;
}

@media (max-width: 980px) {
  .checkout-layout {
    grid-template-columns: 1fr;
  }

  .checkout-hero {
    flex-direction: column;
  }
}

@media (max-width: 720px) {
  .checkout-main {
    width: min(100% - 1rem, 1180px);
    padding-top: 1rem;
  }

  .checkout-hero,
  .checkout-panel {
    padding: 1.2rem;
  }

  .checkout-form__row,
  .payment-grid {
    grid-template-columns: 1fr;
  }

  .crypto-wallet {
    grid-template-columns: 1fr;
  }
}

.modal {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1rem;
}

.modal[hidden] {
  display: none !important;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(17, 17, 17, 0.8);
  backdrop-filter: blur(4px);
}

.modal__content {
  position: relative;
  background: var(--sheet);
  border: 1px solid rgba(17, 17, 17, 0.08);
  box-shadow: var(--shadow);
  padding: 2.5rem;
  max-width: 28rem;
  width: 100%;
  text-align: center;
}

.modal__title {
  margin: 0 0 1rem;
  font-family: "RiccioneSerial", var(--ui-font);
  font-size: 2rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.modal__body {
  margin: 0 0 2rem;
  color: rgba(17, 17, 17, 0.72);
}

.modal__loader {
  width: 3rem;
  height: 3rem;
  border: 3px solid rgba(17, 17, 17, 0.1);
  border-top-color: var(--ink);
  border-radius: 50%;
  margin: 0 auto;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.how-to-pay-list {
  margin: 0.5rem 0 0;
  padding-left: 1.25rem;
  line-height: 1.5;
}

.how-to-pay-list li {
  margin-bottom: 0.5rem;
}