/* Product detail page. Tokens only. */
@layer page {
  .product-layout {
    display: grid;
    gap: var(--space-6);
    padding-block: var(--space-5) var(--space-12);
  }

  @media (min-width: 1024px) {
    .product-layout {
      grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
      align-items: start;
      gap: var(--space-12);
    }
  }

  .product-gallery {
    display: grid;
    place-items: center;
    overflow: hidden;
    aspect-ratio: 4 / 3;
    border-radius: var(--radius-xl);
    background: var(--color-surface-alt);
    color: var(--color-text-muted);
  }

  .product-gallery img {
    inline-size: 100%;
    block-size: 100%;
    object-fit: cover;
  }

  @media (min-width: 1024px) {
    .product-gallery {
      position: sticky;
      inset-block-start: calc(68px + var(--space-6));
    }
  }

  /* ─── Purchase panel ────────────────────────────────────────────── */
  .purchase {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
  }

  .purchase__category {
    color: var(--color-text-strong-muted);
    font-size: var(--text-14);
    text-decoration: none;
  }

  .purchase__category:hover {
    color: var(--color-text);
  }

  .purchase__head h1 {
    margin-block-start: var(--space-1);
    font-size: var(--text-h2);
  }

  .purchase__summary {
    margin-block-start: var(--space-2);
    color: var(--color-text-strong-muted);
    font-size: var(--text-16);
    line-height: var(--leading-body);
  }

  .purchase__form {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
  }

  .option-group {
    margin: 0;
    padding: 0;
    border: 0;
    min-inline-size: 0;
  }

  .option-group__legend {
    margin-block-end: var(--space-2);
    padding: 0;
    color: var(--color-text);
    font-size: var(--text-15);
    font-weight: var(--weight-semibold);
  }

  .option-list {
    display: grid;
    gap: var(--space-2);
  }

  /* Selectable card wrapping a native radio (kept focusable and announced). */
  .option-card {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-block-size: 56px;
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    cursor: pointer;
    transition:
      border-color var(--duration-micro) var(--ease-out),
      background-color var(--duration-micro) var(--ease-out);
  }

  .option-card:hover {
    border-color: var(--color-text-secondary);
  }

  .option-card input {
    position: absolute;
    inline-size: 1px;
    block-size: 1px;
    opacity: 0;
  }

  .option-card__radio {
    flex: none;
    inline-size: 18px;
    block-size: 18px;
    border: 1.5px solid var(--color-border-control);
    border-radius: var(--radius-full);
    background: var(--color-bg);
    transition:
      border-color var(--duration-micro) var(--ease-out),
      box-shadow var(--duration-micro) var(--ease-out);
  }

  .option-card:has(input:checked) {
    border-color: var(--color-primary);
    background: var(--color-primary-soft);
  }

  .option-card:has(input:checked) .option-card__radio {
    border-color: var(--color-primary);
    box-shadow: inset 0 0 0 4px var(--color-bg);
    background: var(--color-primary);
  }

  .option-card:has(input:focus-visible) {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
  }

  .option-card__body {
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: 2px;
    min-inline-size: 0;
  }

  .option-card__title {
    color: var(--color-text);
    font-size: var(--text-15);
    font-weight: var(--weight-semibold);
    line-height: var(--leading-snug);
  }

  .option-card__desc {
    color: var(--color-text-strong-muted);
    font-size: var(--text-13);
    line-height: var(--leading-snug);
  }

  .option-card__needs {
    display: flex;
    align-items: flex-start;
    gap: var(--space-1);
    margin-block-start: var(--space-1);
    color: var(--color-text-strong-muted);
    font-size: var(--text-13);
    line-height: var(--leading-snug);
  }

  .option-card__needs .icon {
    margin-block-start: 2px;
    color: var(--color-info-text);
  }

  .option-card__price {
    flex: none;
    color: var(--color-text);
    font-size: var(--text-15);
    font-weight: var(--weight-semibold);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
  }

  .option-card--method {
    align-items: flex-start;
  }

  .option-card--method .option-card__radio {
    margin-block-start: 3px;
  }

  .amount-input {
    position: relative;
    max-inline-size: 240px;
  }

  .amount-input .input {
    padding-inline-end: var(--space-10);
  }

  .amount-input__suffix {
    position: absolute;
    inset-block-start: 50%;
    inset-inline-end: var(--space-3);
    color: var(--color-text-secondary);
    pointer-events: none;
    translate: 0 -50%;
  }

  .stepper {
    display: inline-flex;
    align-items: center;
    align-self: flex-start;
    border: 1px solid var(--color-border-control);
    border-radius: var(--radius-md);
  }

  .stepper .btn {
    border-radius: var(--radius-md);
  }

  .stepper input {
    inline-size: 56px;
    min-block-size: var(--control-md);
    border: 0;
    background: none;
    font-size: var(--text-16);
    font-weight: var(--weight-semibold);
    font-variant-numeric: tabular-nums;
    text-align: center;
    appearance: textfield;
  }

  .stepper input::-webkit-inner-spin-button,
  .stepper input::-webkit-outer-spin-button {
    appearance: none;
  }

  .stepper input:focus-visible {
    outline-offset: -2px;
  }

  .price-box {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    padding: var(--space-5);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-bg);
    transition: opacity var(--duration-normal) var(--ease-out);
  }

  .price-box.htmx-request {
    opacity: 0.6;
  }

  .price-box__label {
    color: var(--color-text-secondary);
    font-size: var(--text-14);
  }

  .price-box__total {
    color: var(--color-text);
    font-size: var(--text-h3);
    font-weight: var(--weight-bold);
    line-height: var(--leading-tight);
  }

  .price-box__error {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    min-block-size: 40px;
    color: var(--color-danger-text);
    font-size: var(--text-15);
    font-weight: var(--weight-medium);
  }

  .price-box__note {
    color: var(--color-text-secondary);
    font-size: var(--text-13);
  }

  .purchase-facts {
    display: grid;
    gap: var(--space-3);
    margin: 0;
    padding: var(--space-5) 0 0;
    border-block-start: 1px solid var(--color-border);
    list-style: none;
    color: var(--color-text-strong-muted);
    font-size: var(--text-14);
    line-height: var(--leading-snug);
  }

  .purchase-facts li {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .purchase-facts .icon {
    color: var(--color-text-secondary);
  }

  /* ─── Details & related ─────────────────────────────────────────── */
  .product-details {
    max-inline-size: 820px;
  }

  .product-details .tabs__panel {
    padding-block: var(--space-6);
  }

  .product-related {
    margin-block-start: var(--space-16);
  }

  .product-related h2 {
    margin-block-end: var(--space-6);
    font-size: var(--text-h2);
  }
}