/* Общие компоненты прототипов КБ: плашка «Прототип», корзина, тост, поиск, reveal.
   Цвета, радиус и шрифт задаёт версия через переменные --kb-ui-* и --kb-proto-*. */
:root {
  --kb-ui-bg: #ffffff;
  --kb-ui-ink: #17181a;
  --kb-ui-muted: #5e6066;
  --kb-ui-line: rgba(23, 24, 26, 0.12);
  --kb-ui-accent: #ff5a1f;
  --kb-ui-accent-ink: #17181a;
  --kb-ui-radius: 16px;
  --kb-ui-font: inherit;
  --kb-ui-shadow: 0 24px 80px rgba(0, 0, 0, 0.18);
  --kb-proto-bg: #17181a;
  --kb-proto-ink: #f3f1ec;
}

.kb-lock,
.kb-lock body {
  overflow: hidden;
}

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

.kb-proto {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 6px 16px;
  background: var(--kb-proto-bg);
  color: var(--kb-proto-ink);
  font: 500 13px/1.3 var(--kb-ui-font);
  text-align: center;
}

.kb-proto a {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.kb-cart[hidden],
.kb-toast[hidden] {
  display: none;
}

.kb-cart {
  position: fixed;
  inset: 0;
  z-index: 400;
}

.kb-cart:not(.is-open) {
  pointer-events: none;
}

.kb-cart__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.42);
  opacity: 0;
  transition: opacity 0.24s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.kb-cart__panel {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  width: min(440px, 100vw);
  background: var(--kb-ui-bg);
  color: var(--kb-ui-ink);
  font-family: var(--kb-ui-font);
  box-shadow: var(--kb-ui-shadow);
  transform: translateX(104%);
  transition: transform 0.26s cubic-bezier(0.2, 0.8, 0.2, 1);
  outline: none;
}

.kb-cart.is-open .kb-cart__backdrop {
  opacity: 1;
}

.kb-cart.is-open .kb-cart__panel {
  transform: none;
}

.kb-cart__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 16px 16px 24px;
  border-bottom: 1px solid var(--kb-ui-line);
}

.kb-cart__title {
  margin: 0;
  font-size: 22px;
  font-weight: 600;
  line-height: 1.2;
}

.kb-cart__close {
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: var(--kb-ui-radius);
  background: transparent;
  color: inherit;
  font-size: 18px;
  cursor: pointer;
}

.kb-cart__list {
  flex: 1;
  margin: 0;
  padding: 4px 24px;
  overflow-y: auto;
  list-style: none;
}

.kb-cart__item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr) auto;
  grid-template-areas:
    "icon info price"
    "icon qty remove";
  gap: 8px 14px;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--kb-ui-line);
}

.kb-cart__icon {
  grid-area: icon;
  width: 56px;
  height: 56px;
}

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

.kb-cart__name {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.3;
}

.kb-cart__meta {
  margin: 2px 0 0;
  color: var(--kb-ui-muted);
  font-size: 13px;
  line-height: 1.35;
}

.kb-cart__qty {
  grid-area: qty;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.kb-cart__qty button {
  width: 44px;
  height: 44px;
  border: 1px solid var(--kb-ui-line);
  border-radius: calc(var(--kb-ui-radius) * 0.6);
  background: transparent;
  color: inherit;
  font-size: 18px;
  cursor: pointer;
}

.kb-cart__qty output {
  min-width: 28px;
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  text-align: center;
}

.kb-cart__price {
  grid-area: price;
  margin: 0;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.kb-cart__remove {
  grid-area: remove;
  justify-self: end;
  min-height: 44px;
  border: 0;
  background: none;
  color: var(--kb-ui-muted);
  font: inherit;
  font-size: 13px;
  text-decoration: underline;
  text-underline-offset: 3px;
  cursor: pointer;
}

.kb-cart__empty {
  margin: 32px 24px;
  color: var(--kb-ui-muted);
}

.kb-cart__foot {
  padding: 20px 24px 24px;
  border-top: 1px solid var(--kb-ui-line);
}

.kb-cart__sum {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin: 0 0 16px;
  font-size: 16px;
}

.kb-cart__sum strong {
  font-size: 26px;
  font-variant-numeric: tabular-nums;
}

.kb-cart__checkout {
  width: 100%;
  min-height: 52px;
  border: 0;
  border-radius: var(--kb-ui-radius);
  background: var(--kb-ui-accent);
  color: var(--kb-ui-accent-ink);
  font: 600 16px/1 var(--kb-ui-font);
  cursor: pointer;
}

.kb-cart__note {
  margin: 12px 0 0;
  color: var(--kb-ui-muted);
  font-size: 13px;
  line-height: 1.4;
}

.kb-toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 500;
  display: flex;
  gap: 16px;
  align-items: center;
  max-width: calc(100vw - 32px);
  padding: 10px 10px 10px 18px;
  border-radius: var(--kb-ui-radius);
  background: var(--kb-ui-ink);
  color: var(--kb-ui-bg);
  font: 500 14px/1.35 var(--kb-ui-font);
  opacity: 0;
  transform: translate(-50%, 16px);
  transition: opacity 0.2s, transform 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.kb-toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.kb-toast__action {
  min-height: 44px;
  padding: 0 14px;
  border: 0;
  border-radius: calc(var(--kb-ui-radius) * 0.6);
  background: var(--kb-ui-accent);
  color: var(--kb-ui-accent-ink);
  font: 600 14px/1 var(--kb-ui-font);
  cursor: pointer;
}

.kb-search {
  position: relative;
}

.kb-search [data-search-results] {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  right: 0;
  z-index: 300;
  min-width: min(420px, calc(100vw - 32px));
  margin: 0;
  padding: 6px;
  list-style: none;
  background: var(--kb-ui-bg);
  color: var(--kb-ui-ink);
  border: 1px solid var(--kb-ui-line);
  border-radius: var(--kb-ui-radius);
  box-shadow: var(--kb-ui-shadow);
}

.kb-search__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2px 12px;
  width: 100%;
  min-height: 52px;
  padding: 10px 12px;
  border: 0;
  border-radius: calc(var(--kb-ui-radius) * 0.6);
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.kb-search__item:hover,
.kb-search__item:focus-visible {
  background: color-mix(in oklab, var(--kb-ui-ink) 7%, transparent);
}

.kb-search__title {
  font-weight: 600;
}

.kb-search__price {
  font-weight: 600;
  white-space: nowrap;
}

.kb-search__meta,
.kb-search__cta {
  color: var(--kb-ui-muted);
  font-size: 13px;
}

.kb-search__cta {
  text-align: right;
}

.kb-search__empty {
  padding: 12px;
  color: var(--kb-ui-muted);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.6s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

[data-cart-count][data-empty] {
  display: none;
}

[data-cart-count].is-bump {
  animation: kb-bump 0.42s cubic-bezier(0.2, 0.8, 0.2, 1);
}

@keyframes kb-bump {
  40% {
    transform: scale(1.35);
  }
}

@media (max-width: 767px) {
  .kb-proto {
    display: block;
  }

  /* left: 50% без right сжимает фиксированный тост до половины экрана — на узких экранах растягиваем его между полями 16px. */
  .kb-toast {
    right: 16px;
    bottom: 84px;
    left: 16px;
    justify-content: space-between;
    transform: translateY(16px);
  }

  .kb-toast.is-visible {
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .kb-cart__panel,
  .kb-cart__backdrop,
  .kb-toast {
    transition: none;
  }

  [data-cart-count].is-bump {
    animation: none;
  }
}