:root {
  --color-text: #202020;
  --color-text-muted: #606060;
  --color-text-light: #868e96;
  --color-border: #cbcbcb;
  --color-bg: #ffffff;
  --color-bg-soft: #f6f7f8;
  --color-accent: #f5d730;
  --color-sale: #dc3545;
  --color-success: #28a745;

  --font-body: "Open Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif;
  --font-heading: "Oswald", "Arial Narrow", Arial, sans-serif;

  --radius: 4px;
  --transition: 0.2s ease;
  --container: 1200px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  cursor: pointer;
}

fieldset {
  margin: 0;
  padding: 0;
  border: 0;
  min-width: 0;
}

figure,
h1,
h2,
p,
dl,
dd {
  margin: 0;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.page {
  max-width: var(--container);
  margin: 0 auto;
  padding: 32px 40px 64px;
}

.product {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  grid-template-areas:
    "crumbs crumbs"
    "gallery info";
  column-gap: 64px;
  row-gap: 24px;
  align-items: start;
}

.product__gallery {
  grid-area: gallery;
  position: sticky;
  top: 24px;
}

.product__info {
  grid-area: info;
  min-width: 0;
}

.breadcrumbs {
  grid-area: crumbs;
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--color-text-light);
}

.breadcrumbs__item:not(:last-child)::after {
  content: "/";
  margin-left: 8px;
}

.breadcrumbs__link {
  transition: color var(--transition);
}

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

.product__figure {
  overflow: hidden;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
}

.product__image {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

.product__category {
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-light);
}

.product__category-link {
  transition: color var(--transition);
}

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

.product__title {
  font-family: var(--font-heading);
  font-size: 40px;
  font-weight: 500;
  line-height: 1.15;
  text-transform: uppercase;
}

.product__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 12px;
  font-size: 14px;
  color: var(--color-text-muted);
}

.product__sku-value {
  font-variant-numeric: tabular-nums;
}

.product__stock {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-success);
}

.product__stock::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}

.product__form {
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
}

.variants__legend {
  margin-bottom: 12px;
  padding: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-muted);
}

.variants__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.variants__item {
  cursor: pointer;
}

.variants__label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 84px;
  padding: 10px 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  transition: border-color var(--transition), background-color var(--transition), color var(--transition), box-shadow var(--transition);
}

.variants__item:hover .variants__label {
  border-color: var(--color-text);
}

.variants__input:checked + .variants__label {
  border-color: var(--color-text);
  background: var(--color-text);
  color: var(--color-accent);
}

.variants__input:focus-visible + .variants__label {
  box-shadow: 0 0 0 3px rgba(245, 215, 48, 0.6);
}

.price {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  margin-top: 24px;
}

.price__current {
  font-family: var(--font-heading);
  font-size: 36px;
  font-weight: 600;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.price__old {
  font-size: 18px;
  color: var(--color-text-light);
  font-variant-numeric: tabular-nums;
}

.price__old:empty,
.price__discount:empty {
  display: none;
}

.price__discount {
  padding: 3px 8px;
  border-radius: var(--radius);
  background: var(--color-sale);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.2;
  color: #fff;
}

.product__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  margin-top: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 12px 36px;
  border: 2px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn--primary {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-text);
}

.btn--primary:hover {
  background: var(--color-text);
  border-color: var(--color-text);
  color: var(--color-accent);
}

.btn--primary:active {
  transform: translateY(1px);
}

.btn--primary:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(32, 32, 32, 0.25);
}

.btn__icon {
  flex-shrink: 0;
}

.product__added {
  font-size: 14px;
  color: var(--color-success);
  opacity: 0;
  transition: opacity var(--transition);
}

.product__added.is-visible {
  opacity: 1;
}

.product__description {
  margin-top: 32px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
  font-size: 15px;
  line-height: 1.6;
  color: var(--color-text-muted);
}

.product__description p + p {
  margin-top: 12px;
}

.product__description-title {
  margin-bottom: 12px;
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 500;
  text-transform: uppercase;
  color: var(--color-text);
}

.product__composition b {
  color: var(--color-text);
}

.product__props {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.product__prop {
  padding: 12px 14px;
  border-radius: var(--radius);
  background: var(--color-bg-soft);
}

.product__prop dt {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-light);
}

.product__prop dd {
  margin-top: 4px;
  font-size: 14px;
  font-weight: 600;
}

@media (max-width: 1023px) {
  .page {
    padding: 24px 32px 48px;
  }

  .product {
    column-gap: 32px;
  }

  .product__title {
    font-size: 32px;
  }

  .price__current {
    font-size: 30px;
  }

  .product__props {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 767px) {
  .page {
    padding: 16px 16px 40px;
  }

  .product {
    grid-template-columns: 1fr;
    grid-template-areas:
      "crumbs"
      "gallery"
      "info";
    row-gap: 20px;
  }

  .product__gallery {
    position: static;
  }

  .product__title {
    font-size: 28px;
  }

  .product__form {
    margin-top: 20px;
    padding-top: 20px;
  }

  .variants__list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
  }

  .variants__label {
    width: 100%;
  }

  .price__current {
    font-size: 28px;
  }

  .btn--cart {
    width: 100%;
  }

  .product__props {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
  }
}