/* ==========================================================================
   NATUR'O — Product detail & cart pages
   ========================================================================== */

/* --- Breadcrumb --- */

.crumb {
  padding-top: clamp(22px, 3vw, 34px);
  font-size: var(--fs-xs);
  color: var(--muted-2);
}

.crumb ol { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; }
.crumb a { transition: color .2s ease; }
.crumb a:hover { color: var(--cyan-700); }
.crumb li[aria-current] { color: var(--deep); font-weight: 700; }
.crumb .sep { opacity: .4; }

/* ==========================================================================
   Product hero
   ========================================================================== */

.pdp-hero {
  padding-block: clamp(30px, 4vw, 52px) var(--sec-y);
  background: linear-gradient(180deg, #fff 0%, var(--soft) 100%);
}

.pdp-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
  gap: clamp(36px, 5vw, 76px);
  align-items: start;
}

/* Gallery */

.gallery { position: sticky; top: 104px; }

.gallery__stage {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 1 / 1;
  padding: clamp(26px, 4vw, 56px);
  background: radial-gradient(120% 96% at 50% 6%, #fff 0%, var(--soft) 56%, var(--soft-2) 100%);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.gallery__stage img {
  max-height: 100%;
  width: auto;
  object-fit: contain;
  transition: opacity .4s var(--ease);
}

.gallery__thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--s-3);
  margin-top: var(--s-3);
}

.thumb {
  display: grid;
  place-items: center;
  aspect-ratio: 1 / 1;
  padding: 10px;
  border: 1.5px solid var(--line-soft);
  border-radius: var(--r-md);
  background: var(--soft);
  cursor: pointer;
  transition: border-color .25s ease, background .25s ease;
}

.thumb img { max-height: 100%; width: auto; object-fit: contain; }
.thumb:hover { border-color: rgba(32, 185, 223, .5); }
.thumb.is-active { border-color: var(--cyan); background: #fff; }

/* Purchase panel */

.pdp-info { padding-top: var(--s-3); }

.pdp-info .tag { position: static; display: inline-block; margin-bottom: var(--s-4); }

.pdp-info h1 {
  font-size: clamp(2.3rem, 1.5rem + 2.6vw, 3.7rem);
  line-height: 0.98;
  letter-spacing: var(--tr-display);
  text-transform: uppercase;
  font-weight: 900;
  color: var(--deep);
}

.pdp-info__tagline {
  margin-top: var(--s-4);
  font-size: var(--fs-lead);
  line-height: 1.4;
  font-weight: 600;
  color: var(--cyan-700);
}

.pdp-info__intro { margin-top: var(--s-5); color: var(--muted); line-height: 1.72; }

.pdp-price {
  display: flex;
  align-items: baseline;
  gap: var(--s-3);
  margin-top: clamp(26px, 3vw, 34px);
  padding-top: clamp(26px, 3vw, 34px);
  border-top: 1px solid var(--line);
}

.pdp-price strong {
  font-size: clamp(1.85rem, 1.4rem + 1.5vw, 2.5rem);
  line-height: 1;
  letter-spacing: var(--tr-display);
  font-weight: 900;
  color: var(--deep);
}

.pdp-price span { font-size: var(--fs-sm); color: var(--muted-2); }

.pdp-buy { display: flex; flex-wrap: wrap; gap: var(--s-3); margin-top: var(--s-5); }
.pdp-buy .qty { height: 52px; }
.pdp-buy .qty button { width: 44px; height: 100%; }
.pdp-buy .btn { flex: 1; min-width: 210px; }

.pdp-options { margin-top: var(--s-5); }

.pdp-options__label {
  font-size: var(--fs-xs);
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: var(--s-3);
}

.color-opts { display: flex; gap: var(--s-3); }

.color-opt {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 15px 8px 9px;
  border: 1.5px solid var(--line);
  border-radius: var(--r-pill);
  background: #fff;
  font-size: var(--fs-xs);
  font-weight: 700;
  cursor: pointer;
  transition: border-color .25s ease;
}

.color-opt:hover { border-color: rgba(32, 185, 223, .55); }
.color-opt.is-active { border-color: var(--cyan); }
.color-opt .swatch { width: 19px; height: 19px; }

/* Reassurance row */

.pdp-assure {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-4);
  margin-top: clamp(28px, 3vw, 38px);
  padding-top: clamp(24px, 3vw, 32px);
  border-top: 1px solid var(--line);
}

.pdp-assure div { display: flex; align-items: center; gap: 11px; }
.pdp-assure .ico { width: 21px; height: 21px; color: var(--cyan); }
.pdp-assure span { font-size: .77rem; font-weight: 700; line-height: 1.34; color: var(--deep); }

/* --- Water types --- */

.water-types { display: flex; flex-wrap: wrap; gap: var(--s-2); margin-top: var(--s-5); }

.water-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: var(--r-pill);
  background: var(--cyan-050);
  border: 1px solid rgba(32, 185, 223, .26);
  font-size: var(--fs-xs);
  font-weight: 700;
  color: var(--cyan-700);
}

.water-chip .ico { width: 15px; height: 15px; stroke-width: 2.2; }

/* ==========================================================================
   Feature table
   ========================================================================== */

.pdp-features { padding-block: var(--sec-y); background: #fff; }

.feature-table {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.feature-row {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1fr) minmax(0, 1.25fr) auto;
  gap: clamp(16px, 2vw, 30px);
  align-items: center;
  padding: clamp(20px, 2.2vw, 26px) clamp(20px, 2.4vw, 30px);
  border-bottom: 1px solid var(--line-soft);
  transition: background .3s ease;
}

.feature-row:last-child { border-bottom: 0; }
.feature-row:hover { background: var(--soft); }

.feature-row__name {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  font-size: var(--fs-sm);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: var(--tr-tight);
  color: var(--deep);
}

.feature-row__name .ico { width: 22px; height: 22px; color: var(--cyan); }
.feature-row__spec { font-size: var(--fs-sm); color: var(--ink-2); line-height: 1.5; }

.feature-row__benefit {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  font-size: var(--fs-sm);
  line-height: 1.55;
  color: var(--muted);
}

.feature-row__benefit .ico { width: 17px; height: 17px; margin-top: 3px; color: var(--cyan); stroke-width: 2.4; }

.pill {
  padding: 5px 12px;
  border-radius: var(--r-pill);
  background: var(--soft-2);
  font-size: .655rem;
  font-weight: 800;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

/* ==========================================================================
   Highlights + filtration
   ========================================================================== */

.pdp-highlights { padding-block: var(--sec-y); background: var(--soft); }

.pdp-highlights__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(36px, 4.5vw, 72px);
  align-items: start;
}

.highlight-list { display: grid; gap: var(--s-3); }

.highlight {
  display: flex;
  align-items: flex-start;
  gap: var(--s-4);
  padding: clamp(17px, 2vw, 22px) clamp(18px, 2vw, 24px);
  background: #fff;
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--cyan);
  border-radius: var(--r-md);
}

.highlight .ico { width: 21px; height: 21px; margin-top: 2px; color: var(--cyan); }
.highlight p { font-size: var(--fs-sm); line-height: 1.6; color: var(--ink-2); }

/* Filtration chain */

.filtration {
  padding: clamp(28px, 3.4vw, 42px);
  background: linear-gradient(168deg, var(--deep-900) 0%, var(--deep) 100%);
  border-radius: var(--r-lg);
  color: #fff;
}

.filtration h3 {
  font-size: var(--fs-h4);
  letter-spacing: var(--tr-tight);
  text-transform: uppercase;
}

.filtration__steps { display: grid; gap: 0; margin-top: var(--s-5); }

.filt-step {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: var(--s-4);
  padding-bottom: var(--s-5);
}

.filt-step:last-child { padding-bottom: 0; }

.filt-step::before {
  content: "";
  position: absolute;
  left: 17px; top: 38px; bottom: 4px;
  width: 1.5px;
  background: linear-gradient(180deg, rgba(32, 185, 223, .6), rgba(32, 185, 223, .1));
}

.filt-step:last-child::before { display: none; }

.filt-step__n {
  position: relative;
  z-index: 1;
  display: grid; place-items: center;
  width: 35px; height: 35px;
  flex: none;
  border-radius: var(--r-pill);
  background: rgba(32, 185, 223, .18);
  border: 1.5px solid var(--cyan);
  font-size: var(--fs-xs);
  font-weight: 800;
  color: var(--cyan);
}

.filt-step__t { padding-top: 5px; }
.filt-step__t strong { display: block; font-size: var(--fs-sm); letter-spacing: var(--tr-tight); }
.filt-step__t span { display: block; margin-top: 4px; font-size: var(--fs-xs); line-height: 1.5; color: rgba(255, 255, 255, .62); }

.usage-note {
  margin-top: var(--s-5);
  padding-top: var(--s-5);
  border-top: 1px solid rgba(255, 255, 255, .14);
}

.usage-note strong {
  display: block;
  font-size: var(--fs-xs);
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: var(--s-2);
}

.usage-note p { font-size: var(--fs-sm); line-height: 1.6; color: rgba(255, 255, 255, .74); }

/* ==========================================================================
   Spec sheet
   ========================================================================== */

.pdp-specs { padding-block: var(--sec-y); background: #fff; }

.spec-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(272px, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.spec {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-4);
  padding: clamp(16px, 1.8vw, 21px) clamp(18px, 2vw, 24px);
  background: #fff;
}

.spec dt { font-size: var(--fs-xs); color: var(--muted); letter-spacing: .01em; }
.spec dd { margin: 0; font-size: var(--fs-sm); font-weight: 800; letter-spacing: var(--tr-tight); color: var(--deep); text-align: right; }

/* ==========================================================================
   Related products
   ========================================================================== */

.related { padding-block: var(--sec-y); background: var(--soft); }
.related__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(18px, 2vw, 26px); }

/* ==========================================================================
   Cart page
   ========================================================================== */

.cart-page { padding-block: clamp(30px, 4vw, 46px) var(--sec-y); background: var(--soft); min-height: 62vh; }

.cart-page__head { margin-bottom: clamp(30px, 4vw, 44px); }

.cart-page h1 {
  font-size: var(--fs-h1);
  line-height: var(--lh-tight);
  letter-spacing: var(--tr-display);
  text-transform: uppercase;
  color: var(--deep);
}

.cart-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.62fr) minmax(0, 1fr);
  gap: clamp(24px, 3vw, 40px);
  align-items: start;
}

.cart-items {
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.cart-row {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr) auto auto auto auto;
  gap: clamp(14px, 2vw, 22px);
  align-items: center;
  padding: clamp(18px, 2.2vw, 24px);
  border-bottom: 1px solid var(--line-soft);
}

.cart-row:last-child { border-bottom: 0; }

.cart-row__media {
  display: grid; place-items: center;
  aspect-ratio: 1 / 1;
  padding: 9px;
  background: var(--soft);
  border-radius: var(--r-md);
}

.cart-row__media img { max-height: 100%; width: auto; object-fit: contain; }

.cart-row__name {
  font-size: var(--fs-h4);
  line-height: 1.16;
  letter-spacing: var(--tr-tight);
  text-transform: uppercase;
  color: var(--deep);
}

.cart-row__meta { margin-top: 5px; font-size: var(--fs-xs); line-height: 1.45; color: var(--muted); max-width: 34ch; }
.cart-row__unit { font-size: var(--fs-sm); color: var(--muted); white-space: nowrap; }
.cart-row__total { font-size: var(--fs-h4); font-weight: 800; letter-spacing: var(--tr-tight); color: var(--deep); white-space: nowrap; }

.cart-remove {
  display: grid; place-items: center;
  width: 36px; height: 36px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: #fff;
  color: var(--muted);
  cursor: pointer;
  transition: color .22s ease, border-color .22s ease, background .22s ease;
}

.cart-remove:hover { color: #c8453d; border-color: rgba(200, 69, 61, .4); background: #fef4f3; }
.cart-remove .ico { width: 17px; height: 17px; }

/* Summary */

.cart-summary {
  position: sticky;
  top: 104px;
  padding: clamp(24px, 3vw, 32px);
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  box-shadow: var(--sh-md);
}

.cart-summary h2 {
  font-size: var(--fs-h4);
  letter-spacing: var(--tr-tight);
  text-transform: uppercase;
  color: var(--deep);
  padding-bottom: var(--s-4);
  border-bottom: 1px solid var(--line-soft);
}

.sum-row {
  display: flex;
  justify-content: space-between;
  gap: var(--s-4);
  padding: 13px 0;
  font-size: var(--fs-sm);
  color: var(--muted);
}

.sum-row span:last-child { font-weight: 700; color: var(--ink); }

.sum-row--total {
  margin-top: var(--s-2);
  padding-top: var(--s-4);
  border-top: 1px solid var(--line);
  font-size: var(--fs-h4);
  font-weight: 800;
  letter-spacing: var(--tr-tight);
  color: var(--deep);
}

.sum-row--total span:last-child { color: var(--cyan-700); font-weight: 900; }

.cart-summary .btn { margin-top: var(--s-5); }

.cart-summary__note {
  margin-top: var(--s-4);
  font-size: var(--fs-xs);
  line-height: 1.55;
  color: var(--muted-2);
  text-align: center;
}

.cart-perks { margin-top: var(--s-5); padding-top: var(--s-5); border-top: 1px solid var(--line-soft); display: grid; gap: 13px; }
.cart-perks div { display: flex; align-items: center; gap: 11px; font-size: var(--fs-xs); font-weight: 700; color: var(--deep); }
.cart-perks .ico { width: 19px; height: 19px; color: var(--cyan); }

/* Empty state */

.cart-empty {
  display: grid;
  justify-items: center;
  text-align: center;
  padding: clamp(56px, 8vw, 100px) var(--s-5);
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
}

.cart-empty .ico { width: 58px; height: 58px; color: var(--cyan); opacity: .5; stroke-width: 1.1; }
.cart-empty h2 { margin-top: var(--s-5); font-size: var(--fs-h3); letter-spacing: var(--tr-tight); text-transform: uppercase; color: var(--deep); }
.cart-empty p { margin-top: var(--s-3); max-width: 40ch; color: var(--muted); }
.cart-empty .btn { margin-top: var(--s-6); }

/* Toast */

.toast {
  position: fixed;
  left: 50%; bottom: 26px;
  z-index: 200;
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 14px 22px;
  border-radius: var(--r-pill);
  background: var(--deep);
  color: #fff;
  font-size: var(--fs-sm);
  font-weight: 700;
  box-shadow: var(--sh-xl);
  transform: translate(-50%, 24px);
  opacity: 0;
  pointer-events: none;
  transition: opacity .32s var(--ease), transform .32s var(--ease);
}

.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }
.toast .ico { width: 19px; height: 19px; color: var(--cyan); stroke-width: 2.4; }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 1080px) {
  .pdp-hero__grid, .pdp-highlights__grid, .cart-layout { grid-template-columns: 1fr; }
  .gallery, .cart-summary { position: static; }
  .related__grid { grid-template-columns: repeat(2, 1fr); }
  .feature-row { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); row-gap: var(--s-3); }
  .feature-row__benefit { grid-column: 1 / -1; }
  .feature-row .pill { grid-column: 1 / -1; justify-self: start; }
}

@media (max-width: 720px) {
  .cart-row {
    grid-template-columns: 74px minmax(0, 1fr) auto;
    row-gap: var(--s-3);
  }
  .cart-row__unit { grid-column: 2 / 3; }
  .cart-row__total { grid-column: 2 / -1; justify-self: end; }
  .cart-remove { grid-row: 1; grid-column: 3; align-self: start; }
}

@media (max-width: 620px) {
  .related__grid, .pdp-assure, .feature-row { grid-template-columns: 1fr; }
  .gallery__thumbs { grid-template-columns: repeat(4, 1fr); }
  .pdp-buy .btn { min-width: 0; }
}