body {
  background: radial-gradient(circle at top, rgba(31, 111, 255, 0.18), transparent 55%), radial-gradient(circle at bottom, rgba(49, 249, 137, 0.12), transparent 55%), var(--color-background);
}

.checkout-hero {
  padding-top: var(--space-12);
  padding-bottom: var(--space-8);
}

.checkout-hero__layout {
  display: grid;
  grid-template-columns: minmax(0, 2.3fr) minmax(0, 1.4fr);
  gap: var(--space-8);
  align-items: center;
}

.checkout-hero__text p {
  max-width: 42rem;
}

.checkout-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.checkout-hero__steps {
  justify-self: end;
}

.checkout-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(122, 129, 147, 0.4);
  background: linear-gradient(135deg, rgba(31, 111, 255, 0.15), rgba(49, 249, 137, 0.05));
  box-shadow: var(--shadow-soft);
}

.checkout-steps__item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--gray-300);
}

.checkout-steps__item--active {
  color: var(--gray-50);
}

.checkout-steps__index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(163, 168, 184, 0.7);
  font-size: var(--font-size-sm);
}

.checkout-steps__item--active .checkout-steps__index {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
}

.checkout-steps__label {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.checkout-main {
  padding-top: 0;
}

.checkout-main__grid {
  display: grid;
  grid-template-columns: minmax(0, 2.1fr) minmax(0, 1.2fr);
  gap: var(--space-6);
  align-items: flex-start;
}

.checkout-main__primary {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.checkout-main__sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.checkout-section__header {
  margin-bottom: var(--space-4);
}

.checkout-section__header--inline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.checkout-section__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  max-width: 44rem;
}

.checkout-cart {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 2fr);
  gap: var(--space-4);
  align-items: flex-start;
}

.checkout-cart__image {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(122, 129, 147, 0.35);
}

.checkout-cart__items {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.checkout-cart-item {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background-color: rgba(17, 19, 24, 0.8);
  border: 1px solid rgba(122, 129, 147, 0.4);
}

.checkout-cart-item__name {
  font-size: var(--font-size-md);
  margin-bottom: var(--space-1);
}

.checkout-cart-item__meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.checkout-cart-item__controls {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-2);
  min-width: 8rem;
}

.checkout-cart-item__quantity {
  max-width: 5rem;
  text-align: center;
}

.checkout-cart-item__price {
  font-weight: 600;
}

.checkout-cart__actions {
  grid-column: 1 / -1;
  display: flex;
  justify-content: flex-start;
}

.checkout-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.checkout-form__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4);
}

.checkout-form__grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.checkout-fieldset {
  border-radius: var(--radius-md);
  border: 1px solid rgba(122, 129, 147, 0.45);
  padding: var(--space-4);
  margin-top: var(--space-4);
}

.checkout-fieldset__legend {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--gray-300);
  padding-inline: 0.35rem;
}

.checkout-shipping-options,
.checkout-payment-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.checkout-option {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background-color: rgba(11, 13, 18, 0.9);
  border: 1px solid rgba(122, 129, 147, 0.55);
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast), transform var(--transition-fast);
}

.checkout-option--compact {
  grid-template-columns: auto minmax(0, 1fr);
}

.checkout-option__input {
  width: 1.1rem;
  height: 1.1rem;
}

.checkout-option__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.checkout-option__title {
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.checkout-option__meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.checkout-option__price {
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.checkout-option:hover {
  border-color: rgba(49, 249, 137, 0.7);
  box-shadow: 0 0 0 1px rgba(49, 249, 137, 0.25);
  background-color: rgba(17, 19, 24, 0.95);
  transform: translateY(-1px);
}

.checkout-option__input:checked + .checkout-option__body,
.checkout-option__input:checked ~ .checkout-option__price {
  color: var(--gray-50);
}

.checkout-subsection {
  margin-top: var(--space-6);
}

.checkout-subsection__header {
  margin-bottom: var(--space-3);
}

.checkout-subsection__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.checkout-billing-note {
  margin-top: var(--space-3);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.checkout-payment {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.checkout-payment__visual {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(122, 129, 147, 0.5);
}

.checkout-payment__details {
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background-color: rgba(11, 13, 18, 0.95);
  border: 1px solid rgba(122, 129, 147, 0.6);
}

.checkout-payment-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.checkout-discounts {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.checkout-inline-field {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-2);
}

.checkout-support {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
}

.checkout-support__channel {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-3);
  align-items: flex-start;
}

.checkout-support__icon {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  background: radial-gradient(circle at top, rgba(31, 111, 255, 0.5), transparent 70%);
}

.checkout-support__title {
  font-size: var(--font-size-md);
  margin-bottom: var(--space-1);
}

.checkout-summary {
  position: sticky;
  top: 5.5rem;
}

.checkout-costs {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
}

.checkout-costs__row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-4);
}

.checkout-costs__row--discount {
  color: var(--color-accent);
}

.checkout-costs__row--total {
  margin-top: var(--space-2);
  padding-top: var(--space-2);
  border-top: 1px solid rgba(122, 129, 147, 0.45);
  font-size: var(--font-size-md);
  font-weight: 600;
}

.checkout-summary__consent {
  margin-top: var(--space-4);
}

.checkout-consent {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.checkout-consent input[type="checkbox"] {
  margin-top: 0.15rem;
}

.checkout-summary__button {
  width: 100%;
  margin-top: var(--space-4);
}

.checkout-summary__security {
  margin-top: var(--space-3);
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.checkout-recommendations__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
}

.checkout-recommendation {
  padding: var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid rgba(122, 129, 147, 0.5);
  background-color: rgba(11, 13, 18, 0.9);
}

.checkout-recommendation__title {
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-1);
}

.checkout-recommendation__meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}

.checkout-recommendation__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.checkout-recommendation__price {
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.checkout-confirmation-preview__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.checkout-confirmation-preview__list {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  padding-left: var(--space-4);
}

.checkout-confirmation-preview__list li {
  margin-bottom: var(--space-1);
}

@media (max-width: 1024px) {
  .checkout-hero__layout {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1.2fr);
  }

  .checkout-main__grid {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1.3fr);
  }

  .checkout-summary {
    top: 4.5rem;
  }
}

@media (max-width: 900px) {
  .checkout-hero__layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .checkout-hero__steps {
    justify-self: flex-start;
  }

  .checkout-main__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .checkout-summary {
    position: static;
  }

  .checkout-cart {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 768px) {
  .checkout-hero {
    padding-top: var(--space-10);
  }

  .checkout-form__grid,
  .checkout-form__grid--3 {
    grid-template-columns: minmax(0, 1fr);
  }

  .checkout-section__header--inline {
    flex-direction: column;
    align-items: flex-start;
  }

  .checkout-support__channel {
    grid-template-columns: minmax(0, 1fr);
  }

  .checkout-inline-field {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 520px) {
  .checkout-cart-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .checkout-cart-item__controls {
    flex-direction: row;
    justify-content: space-between;
    width: 100%;
  }

  .checkout-recommendation__footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .checkout-summary__button {
    white-space: normal;
  }
}