/* MWS Shop — storefront styles on top of MWS design tokens (tokens.css). */

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

html, body {
  margin: 0;
  padding: 0;
  background: var(--sys-background-lower);
  color: var(--sys-text-primary);
  font-family: var(--const-typography-family-text), system-ui, sans-serif;
  font-size: var(--sys-typography-size-paragraph-p3);
  line-height: var(--sys-typography-lineHeight-paragraph-p3);
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--const-spacing-08); }

/* ---------- Typography helpers ---------- */
.t-wide  { font-family: var(--const-typography-family-wide), sans-serif; font-weight: 500; }
.promo-3 { font-family: var(--const-typography-family-wide), sans-serif; font-weight: 400; font-size: var(--sys-typography-size-promo-3); line-height: var(--sys-typography-lineHeight-promo-3); letter-spacing: -0.01em; }
.h2 { font-family: var(--const-typography-family-wide), sans-serif; font-weight: 500; font-size: var(--sys-typography-size-header-h2); line-height: var(--sys-typography-lineHeight-header-h2); margin: 0; }
.h3 { font-family: var(--const-typography-family-wide), sans-serif; font-weight: 500; font-size: var(--sys-typography-size-header-h3); line-height: var(--sys-typography-lineHeight-header-h3); margin: 0; }
.h4 { font-family: var(--const-typography-family-wide), sans-serif; font-weight: 500; font-size: var(--sys-typography-size-header-h4); line-height: var(--sys-typography-lineHeight-header-h4); margin: 0; }
.p1 { font-size: var(--sys-typography-size-paragraph-p1); line-height: var(--sys-typography-lineHeight-paragraph-p1); }
.p2 { font-size: var(--sys-typography-size-paragraph-p2); line-height: var(--sys-typography-lineHeight-paragraph-p2); }
.p4 { font-size: var(--sys-typography-size-paragraph-p4); line-height: var(--sys-typography-lineHeight-paragraph-p4); }
.c1 { font-size: var(--sys-typography-size-caption-c1); line-height: var(--sys-typography-lineHeight-caption-c1); }
.muted { color: var(--sys-text-secondary); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--sys-background-bar);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--sys-background-stroke);
}
.site-header .container {
  display: flex;
  align-items: center;
  gap: var(--const-spacing-08);
  height: 64px;
}
.logo { display: inline-flex; align-items: baseline; gap: var(--const-spacing-03); }
.logo-mark {
  font-family: var(--const-typography-family-wide), sans-serif;
  font-weight: 700;
  font-size: var(--sys-typography-size-header-h3);
  color: var(--sys-brand-MTSRed);
  letter-spacing: -0.02em;
}
.logo-word {
  font-family: var(--const-typography-family-wide), sans-serif;
  font-weight: 500;
  font-size: var(--sys-typography-size-header-h3);
  letter-spacing: -0.02em;
}
.header-spacer { flex: 1; }
.header-nav { display: flex; gap: var(--const-spacing-07); }
.header-nav a { color: var(--sys-text-secondary); font-size: var(--sys-typography-size-paragraph-p4); }
.header-nav a:hover { color: var(--sys-text-primary); }

.cart-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--const-spacing-04);
  height: 44px;
  padding: 0 var(--const-spacing-06);
  border-radius: var(--const-radius-09);
  background: var(--sys-controls-tertiaryActive);
  color: var(--sys-text-primary);
  font-weight: 500;
  font-size: var(--sys-typography-size-paragraph-p4);
  transition: background .15s ease;
}
.cart-button:hover { background: var(--sys-controls-hoverPrimary); }
.cart-count {
  display: none;
  min-width: 20px;
  height: 20px;
  padding: 0 var(--const-spacing-02);
  border-radius: var(--const-radius-09);
  background: var(--sys-accent-notification);
  color: #fff;
  font-size: var(--sys-typography-size-caption-c1);
  line-height: 20px;
  text-align: center;
  font-weight: 500;
}
.cart-count.visible { display: inline-block; }

/* ---------- Hero ---------- */
.hero {
  margin-top: var(--const-spacing-09);
  border-radius: var(--const-radius-06);
  overflow: hidden;
  position: relative;
  background: var(--const-palette-greyscale-800);
  color: #fff;
  min-height: 320px;
  display: flex;
  align-items: flex-end;
}
.hero-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .85; }
.hero-shade { position: absolute; inset: 0; background: linear-gradient(78deg, rgba(0,0,0,.72) 18%, rgba(0,0,0,.12) 62%); }
.hero-content { position: relative; padding: var(--const-spacing-11); max-width: 640px; display: flex; flex-direction: column; gap: var(--const-spacing-06); align-items: flex-start; }
.hero-kicker {
  display: inline-flex;
  align-items: center;
  padding: var(--const-spacing-02) var(--const-spacing-05);
  border-radius: var(--const-radius-09);
  background: var(--sys-brand-MTSRed);
  color: #fff;
  font-size: var(--sys-typography-size-caption-c1);
  font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.hero-title { margin: 0; }
.hero-sub { margin: 0; color: rgba(255,255,255,.78); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--const-spacing-04);
  height: 44px;
  padding: 0 var(--const-spacing-07);
  border-radius: var(--const-radius-02);
  font-weight: 500;
  font-size: var(--sys-typography-size-paragraph-p3);
  transition: filter .15s ease, background .15s ease, transform .1s ease;
  user-select: none;
}
.btn:active { transform: scale(.98); }
.btn-primary { background: var(--sys-controls-primaryActive); color: #fff; }
.btn-primary:hover { filter: brightness(1.08); }
.btn-secondary { background: var(--sys-controls-secondaryActive); color: var(--sys-text-inverted); }
.btn-secondary:hover { filter: brightness(1.2); }
.btn-tertiary { background: var(--sys-controls-tertiaryActive); color: var(--sys-text-primary); }
.btn-tertiary:hover { background: var(--sys-controls-hoverPrimary); }
.btn-block { width: 100%; }
.btn[disabled] { background: var(--sys-controls-inactive); color: var(--sys-text-tertiary); cursor: not-allowed; filter: none; }
.btn.in-cart { background: var(--sys-background-positiveSoft); color: var(--sys-text-positiveStrong); }

/* ---------- Filter chips ---------- */
.chips { display: flex; gap: var(--const-spacing-04); flex-wrap: wrap; margin: var(--const-spacing-09) 0 var(--const-spacing-08); }
.chip {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 var(--const-spacing-06);
  border-radius: var(--const-radius-09);
  background: var(--sys-background-secondaryElevated);
  border: 1px solid var(--sys-background-stroke);
  color: var(--sys-text-primary);
  font-size: var(--sys-typography-size-paragraph-p4);
  transition: background .15s ease;
}
.chip:hover { background: var(--sys-controls-hoverPrimary); }
.chip.selected { background: var(--sys-controls-secondaryActive); border-color: var(--sys-controls-secondaryActive); color: var(--sys-text-inverted); }

/* ---------- Catalog grid ---------- */
.catalog {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--const-spacing-07);
  padding-bottom: var(--const-spacing-13);
}
.product-card {
  display: flex;
  flex-direction: column;
  background: var(--sys-background-primaryElevated);
  border: 1px solid var(--sys-background-stroke);
  border-radius: var(--const-radius-04);
  overflow: hidden;
  box-shadow: var(--const-shadow-01);
  transition: box-shadow .2s ease, transform .2s ease;
}
.product-card:hover { box-shadow: var(--const-shadow-02); transform: translateY(-2px); }
.card-media { position: relative; aspect-ratio: 1 / 1; background: var(--sys-background-secondary); }
.card-media img { width: 100%; height: 100%; object-fit: cover; }
.card-badge {
  position: absolute;
  top: var(--const-spacing-05);
  left: var(--const-spacing-05);
  padding: var(--const-spacing-02) var(--const-spacing-05);
  border-radius: var(--const-radius-09);
  font-size: var(--sys-typography-size-caption-c1);
  font-weight: 500;
}
.badge-hit  { background: var(--sys-brand-MTSRed); color: #fff; }
.badge-new  { background: var(--sys-background-activeSoft); color: var(--sys-text-activeStrong); }
.badge-sale { background: var(--sys-background-warningSoft); color: var(--sys-text-warningStrong); }
.card-body { display: flex; flex-direction: column; gap: var(--const-spacing-04); padding: var(--const-spacing-06); flex: 1; }
.card-brand { color: var(--sys-text-tertiary); font-size: var(--sys-typography-size-caption-c1); letter-spacing: .06em; text-transform: uppercase; }
.card-name { font-family: var(--const-typography-family-wide), sans-serif; font-weight: 500; font-size: var(--sys-typography-size-header-h4); line-height: var(--sys-typography-lineHeight-header-h4); margin: 0; }
.card-specs { color: var(--sys-text-secondary); font-size: var(--sys-typography-size-paragraph-p4); line-height: var(--sys-typography-lineHeight-paragraph-p4); flex: 1; }
.card-price-row { display: flex; align-items: baseline; gap: var(--const-spacing-04); margin-top: var(--const-spacing-03); }
.card-price { font-family: var(--const-typography-family-wide), sans-serif; font-weight: 500; font-size: var(--sys-typography-size-header-h4); }
.card-old-price { color: var(--sys-text-tertiary); text-decoration: line-through; font-size: var(--sys-typography-size-paragraph-p4); }

/* ---------- Product page ---------- */
.breadcrumbs { display: flex; gap: var(--const-spacing-04); margin: var(--const-spacing-08) 0; color: var(--sys-text-secondary); font-size: var(--sys-typography-size-paragraph-p4); }
.breadcrumbs a:hover { color: var(--sys-text-primary); }
.product-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: var(--const-spacing-09);
  padding-bottom: var(--const-spacing-13);
  align-items: start;
}
.product-gallery {
  background: var(--sys-background-primaryElevated);
  border: 1px solid var(--sys-background-stroke);
  border-radius: var(--const-radius-05);
  overflow: hidden;
  position: sticky;
  top: 88px;
}
.product-gallery img { width: 100%; aspect-ratio: 1/1; object-fit: cover; }
.product-info { display: flex; flex-direction: column; gap: var(--const-spacing-07); }
.price-card {
  background: var(--sys-background-primaryElevated);
  border: 1px solid var(--sys-background-stroke);
  border-radius: var(--const-radius-04);
  padding: var(--const-spacing-08);
  display: flex;
  flex-direction: column;
  gap: var(--const-spacing-06);
  box-shadow: var(--const-shadow-01);
}
.price-row { display: flex; align-items: baseline; gap: var(--const-spacing-05); }
.price-current { font-family: var(--const-typography-family-wide), sans-serif; font-weight: 500; font-size: var(--sys-typography-size-promo-4); }
.price-old { color: var(--sys-text-tertiary); text-decoration: line-through; }
.discount-pill { padding: var(--const-spacing-02) var(--const-spacing-04); border-radius: var(--const-radius-09); background: var(--sys-brand-MTSRed); color: #fff; font-size: var(--sys-typography-size-caption-c1); font-weight: 500; }
.color-dots { display: flex; gap: var(--const-spacing-04); align-items: center; }
.color-dot { width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--sys-background-stroke); }
.specs-table { width: 100%; border-collapse: collapse; }
.specs-table th, .specs-table td { text-align: left; padding: var(--const-spacing-05) 0; border-bottom: 1px solid var(--sys-background-stroke); font-weight: 400; vertical-align: top; }
.specs-table th { color: var(--sys-text-secondary); width: 40%; padding-right: var(--const-spacing-06); }
.section-card {
  background: var(--sys-background-primaryElevated);
  border: 1px solid var(--sys-background-stroke);
  border-radius: var(--const-radius-04);
  padding: var(--const-spacing-08);
  display: flex;
  flex-direction: column;
  gap: var(--const-spacing-06);
}

/* ---------- Cart & checkout ---------- */
.page-title { margin: var(--const-spacing-09) 0 var(--const-spacing-08); }
.cart-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
  gap: var(--const-spacing-08);
  padding-bottom: var(--const-spacing-13);
  align-items: start;
}
.cart-items { display: flex; flex-direction: column; gap: var(--const-spacing-05); }
.cart-item {
  display: grid;
  grid-template-columns: 96px 1fr auto;
  gap: var(--const-spacing-06);
  align-items: center;
  background: var(--sys-background-primaryElevated);
  border: 1px solid var(--sys-background-stroke);
  border-radius: var(--const-radius-03);
  padding: var(--const-spacing-06);
}
.cart-item-thumb { width: 96px; height: 96px; border-radius: var(--const-radius-02); object-fit: cover; background: var(--sys-background-secondary); }
.cart-item-name { font-weight: 500; }
.qty-control { display: inline-flex; align-items: center; gap: var(--const-spacing-04); }
.qty-btn {
  width: 32px; height: 32px;
  border-radius: var(--const-radius-01);
  background: var(--sys-controls-tertiaryActive);
  color: var(--sys-text-primary);
  font-size: var(--sys-typography-size-paragraph-p2);
  line-height: 1;
}
.qty-btn:hover { background: var(--sys-controls-hoverPrimary); }
.cart-item-right { display: flex; flex-direction: column; align-items: flex-end; gap: var(--const-spacing-04); }
.remove-link { color: var(--sys-text-secondary); font-size: var(--sys-typography-size-caption-c1); background: none; padding: 0; }
.remove-link:hover { color: var(--sys-text-negative); }

.summary-card {
  background: var(--sys-background-primaryElevated);
  border: 1px solid var(--sys-background-stroke);
  border-radius: var(--const-radius-04);
  padding: var(--const-spacing-08);
  display: flex;
  flex-direction: column;
  gap: var(--const-spacing-06);
  box-shadow: var(--const-shadow-01);
  position: sticky;
  top: 88px;
}
.summary-row { display: flex; justify-content: space-between; align-items: baseline; }
.summary-total { font-family: var(--const-typography-family-wide), sans-serif; font-weight: 500; font-size: var(--sys-typography-size-header-h3); }

.field { display: flex; flex-direction: column; gap: var(--const-spacing-03); }
.field label { font-size: var(--sys-typography-size-paragraph-p4); color: var(--sys-text-secondary); }
.field input, .field textarea {
  height: 44px;
  padding: 0 var(--const-spacing-06);
  border-radius: var(--const-radius-02);
  border: 1px solid var(--sys-controls-stroke);
  background: var(--sys-background-primaryElevated);
  color: var(--sys-text-primary);
  font: inherit;
  outline: none;
  transition: border-color .15s ease;
  width: 100%;
}
.field textarea { height: auto; min-height: 72px; padding: var(--const-spacing-05) var(--const-spacing-06); resize: vertical; }
.field input:focus, .field textarea:focus { border-color: var(--sys-accent-active); }

.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--const-spacing-02);
  background: var(--sys-background-secondary);
  border-radius: var(--const-radius-02);
  padding: var(--const-spacing-02);
}
.segmented button {
  height: 40px;
  border-radius: calc(var(--const-radius-02) - 2px);
  background: transparent;
  color: var(--sys-text-secondary);
  font-weight: 500;
  font-size: var(--sys-typography-size-paragraph-p4);
}
.segmented button.active { background: var(--sys-background-primaryElevated); color: var(--sys-text-primary); box-shadow: var(--const-shadow-01); }

.form-error {
  display: none;
  padding: var(--const-spacing-05) var(--const-spacing-06);
  border-radius: var(--const-radius-02);
  background: var(--sys-background-negativeSoft);
  color: var(--sys-text-negativeStrong);
  font-size: var(--sys-typography-size-paragraph-p4);
}
.form-error.visible { display: block; }

.empty-state {
  text-align: center;
  padding: var(--const-spacing-14) var(--const-spacing-08);
  display: flex;
  flex-direction: column;
  gap: var(--const-spacing-06);
  align-items: center;
}

.success-card {
  max-width: 560px;
  margin: var(--const-spacing-13) auto;
  text-align: center;
  background: var(--sys-background-primaryElevated);
  border: 1px solid var(--sys-background-stroke);
  border-radius: var(--const-radius-05);
  padding: var(--const-spacing-11);
  display: flex;
  flex-direction: column;
  gap: var(--const-spacing-06);
  align-items: center;
  box-shadow: var(--const-shadow-01);
}
.success-icon {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: var(--sys-background-positiveSoft);
  color: var(--sys-text-positiveStrong);
  display: flex; align-items: center; justify-content: center;
  font-size: var(--sys-typography-size-header-h2);
}

/* ---------- Benefits strip ---------- */
.benefits {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--const-spacing-07);
  margin: var(--const-spacing-09) 0;
}
.benefit {
  display: flex;
  gap: var(--const-spacing-05);
  align-items: flex-start;
  background: var(--sys-background-primaryElevated);
  border: 1px solid var(--sys-background-stroke);
  border-radius: var(--const-radius-03);
  padding: var(--const-spacing-06) var(--const-spacing-07);
}
.benefit-icon { font-size: var(--sys-typography-size-header-h3); line-height: 1.2; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--sys-background-stroke);
  background: var(--sys-background-primary);
  padding: var(--const-spacing-09) 0;
  margin-top: var(--const-spacing-09);
}
.site-footer .container { display: flex; justify-content: space-between; align-items: center; gap: var(--const-spacing-06); flex-wrap: wrap; }

/* ---------- Toast ---------- */
.toast {
  position: fixed;
  bottom: var(--const-spacing-08);
  left: 50%;
  transform: translate(-50%, 120%);
  background: var(--sys-background-inverted);
  color: var(--sys-text-inverted);
  padding: var(--const-spacing-05) var(--const-spacing-08);
  border-radius: var(--const-radius-09);
  box-shadow: var(--const-shadow-04);
  font-size: var(--sys-typography-size-paragraph-p4);
  transition: transform .25s ease;
  z-index: 100;
  max-width: calc(100vw - 32px);
}
.toast.visible { transform: translate(-50%, 0); }

/* ---------- Reveal animation ---------- */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(14px); transition: opacity .45s ease, transform .45s ease; }
  .reveal.shown { opacity: 1; transform: none; }
}

/* ---------- Skeleton ---------- */
.skeleton {
  border-radius: var(--const-radius-04);
  background: linear-gradient(100deg, var(--sys-background-secondary) 40%, var(--sys-background-primaryElevated) 50%, var(--sys-background-secondary) 60%);
  background-size: 200% 100%;
  animation: shimmer 1.2s infinite linear;
  min-height: 380px;
}
@keyframes shimmer { to { background-position: -200% 0; } }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .catalog { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 820px) {
  .catalog { grid-template-columns: repeat(2, 1fr); }
  .product-layout, .cart-layout { grid-template-columns: 1fr; }
  .product-gallery, .summary-card { position: static; }
  .benefits { grid-template-columns: 1fr; }
  .header-nav { display: none; }
  .hero-content { padding: var(--const-spacing-08); }
  .hero { min-height: 260px; }
}
@media (max-width: 480px) {
  .container { padding: 0 var(--const-spacing-06); }
  .catalog { grid-template-columns: 1fr; }
  .cart-item { grid-template-columns: 72px 1fr; }
  .cart-item-thumb { width: 72px; height: 72px; }
  .cart-item-right { grid-column: 1 / -1; flex-direction: row; justify-content: space-between; align-items: center; }
  .cart-button span.cart-label { display: none; }
}