.product-purchase-card {
  width: min(100%, 780px);
  margin: 22px auto 28px;
  padding: clamp(20px, 4vw, 30px);
  border: 1px solid rgba(49, 91, 73, 0.2);
  border-radius: 20px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.96), rgba(233, 239, 199, 0.64));
  box-shadow: 0 18px 48px rgba(49, 91, 73, 0.1);
}

.product-purchase-copy {
  margin-bottom: 18px;
}

.product-purchase-copy h2 {
  margin: 0 0 5px;
  color: var(--leaf);
  font-size: clamp(1.35rem, 4vw, 1.8rem);
}

.product-purchase-copy p,
.product-purchase-unavailable,
.product-purchase-status {
  margin: 0;
  color: var(--muted);
  line-height: 1.5;
}

.product-purchase-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: end;
}

.product-size-field {
  display: grid;
  gap: 7px;
  color: var(--leaf);
  font-weight: 900;
}

.product-size-field select {
  width: 100%;
  min-height: 52px;
  padding: 0 42px 0 14px;
  border: 1px solid rgba(49, 91, 73, 0.28);
  border-radius: 12px;
  background-color: #fff;
  color: var(--ink);
  font: inherit;
}

.product-size-field select:focus-visible {
  outline: 3px solid rgba(142, 166, 66, 0.34);
  outline-offset: 2px;
}

.product-purchase-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.product-purchase-actions .btn {
  min-height: 52px;
}

.product-purchase-add.is-added {
  background: #6b8e23;
}

.product-purchase-status {
  margin-top: 14px;
  color: var(--leaf);
  font-weight: 850;
}

.product-detail-back {
  width: min(100%, 780px);
  margin: 24px auto 0;
}

@media (max-width: 680px) {
  .product-purchase-card {
    width: calc(100% - 12px);
    margin: 18px 6px 24px;
    padding: 20px;
    border-radius: 18px;
  }

  .product-purchase-grid {
    grid-template-columns: 1fr;
  }

  .product-purchase-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .product-purchase-actions .btn {
    width: 100%;
  }

  .product-detail-back {
    width: calc(100% - 12px);
  }
}