/* ============================================
   Product Detail Page
   ============================================ */

/* ---- Product Layout ---- */
.product {
  padding: var(--space-2xl) 0 var(--space-3xl);
}

.product__layout {
  display: grid;
  grid-template-columns: 55% 45%;
  gap: var(--space-2xl);
  align-items: start;
}

/* ---- Swiper Gallery (replaces static gallery) ---- */
.product-gallery {
  display: flex;
  gap: var(--space-md);
  position: sticky;
  top: calc(var(--navbar-height) + var(--space-lg));
  overflow: hidden;
  min-width: 0;
}

.product-gallery__thumbs-col {
  width: 80px;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

.product-gallery__thumbs-swiper {
  position: absolute;
  inset: 0;
}

.product-gallery__thumbs-swiper .swiper-slide {
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  opacity: 0.6;
  transition: opacity var(--transition-fast), border-color var(--transition-fast);
}

.product-gallery__thumbs-swiper .swiper-slide-thumb-active {
  border-color: var(--color-primary);
  opacity: 1;
}

.product-gallery__thumbs-swiper .swiper-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-gallery__main-col {
  flex: 1;
  min-width: 0;
}

.product-gallery__main-swiper {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background-color: var(--color-bg-light);
}

.product-gallery__main-swiper .swiper-slide img {
  width: 100%;
  height: auto;
  display: block;
}

/* ---- Product Info ---- */
.product-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.product-info__badge {
  display: inline-block;
  background-color: var(--color-badge-yellow);
  color: var(--color-text-dark);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  align-self: flex-start;
}

.product-info__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-dark);
  line-height: var(--line-height-tight);
}

.product-info__rating {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.product-info__reviews {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.product-info__reviews a {
  color: var(--color-primary);
  text-decoration: underline;
}

/* ---- Pricing ---- */
.product-price {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.product-price__current {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-dark);
}

.product-price__original {
  font-size: var(--font-size-md);
  color: var(--color-text-muted);
  text-decoration: line-through;
}

.product-price__save {
  display: inline-block;
  background-color: var(--color-badge-red);
  color: var(--color-text-white);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
}

.product-info__desc {
  font-size: var(--font-size-base);
  color: var(--color-text-body);
  line-height: var(--line-height-relaxed);
}

/* ---- Payment Icons ---- */
.product-info__payment-icons {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  opacity: 0.6;
}

/* ---- Photo Upload ---- */
.photo-upload {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
  background-color: var(--color-bg-white);
}

.photo-upload:hover {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.photo-upload__icon {
  width: 40px;
  height: 40px;
  margin-inline: auto;
  margin-bottom: var(--space-sm);
  color: var(--color-primary);
}

.photo-upload__text {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-dark);
  margin-bottom: var(--space-xs);
}

.photo-upload__hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.photo-upload__input {
  display: none;
}

/* ---- Quantity Selector ---- */
.quantity-selector {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 6px;
  background-color: var(--color-bg-light);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-pill);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.quantity-selector:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px hsla(var(--hue-primary), 100%, 56%, 0.12);
}

.quantity-selector__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: var(--color-bg-white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-dark);
  box-shadow: var(--shadow-sm);
  transition: background-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  user-select: none;
}

.quantity-selector__btn:hover {
  background-color: var(--color-primary);
  color: var(--color-text-white);
  transform: scale(1.05);
}

.quantity-selector__btn:active {
  transform: scale(0.96);
}

.quantity-selector__btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none;
  background-color: var(--color-bg-white);
  color: var(--color-text-muted);
}

.quantity-selector__btn:disabled:hover {
  background-color: var(--color-bg-white);
  color: var(--color-text-muted);
}

.quantity-selector__value {
  width: 56px;
  text-align: center;
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-dark);
  background-color: transparent;
  border: none;
  padding: var(--space-sm) 0;
  -moz-appearance: textfield;
  outline: none;
}

.quantity-selector__value::-webkit-outer-spin-button,
.quantity-selector__value::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* ---- Add to Cart Row ---- */
.product-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.product-actions__row {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.product-actions .btn--full {
  flex: 1;
}

.product-actions__wishlist {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--transition-fast);
  background: none;
  border: none;
  padding: 0;
}

.product-actions__wishlist:hover {
  color: var(--color-primary);
}

.product-actions__wishlist svg {
  width: 18px;
  height: 18px;
}

/* ---- Mini-FAQ Accordion ---- */
.product-faq {
  border-top: 1px solid var(--color-border);
}

.product-faq__item {
  border-bottom: 1px solid var(--color-border);
}

.product-faq__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-md) 0;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-dark);
  cursor: pointer;
  background: none;
  border: none;
  text-align: start;
}

.product-faq__question svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  transition: transform var(--transition-base);
  color: var(--color-text-muted);
}

.product-faq__item.is-open .product-faq__question svg {
  transform: rotate(180deg);
}

.product-faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-slow);
}

.product-faq__answer-inner {
  padding-bottom: var(--space-md);
  font-size: var(--font-size-sm);
  color: var(--color-text-body);
  line-height: var(--line-height-relaxed);
}

.product-faq__item.is-open .product-faq__answer {
  max-height: 500px;
}

/* ---- Step Flow (Personalise) ---- */
.step-flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.step-flow__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
}

.step-flow__number {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-circle);
  background-color: var(--color-primary);
  color: var(--color-text-white);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-flow__title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-dark);
}

.step-flow__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  max-width: 260px;
}

/* ---- Upload Tips ---- */
.upload-tips {
  margin-top: var(--space-2xl);
}

.upload-tips__heading {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-dark);
  margin-bottom: var(--space-lg);
  text-align: center;
}

.upload-tips__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.upload-tips__card {
  text-align: center;
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-bg-white);
  box-shadow: var(--shadow-sm);
}

.upload-tips__image {
  aspect-ratio: 1 / 1;
  overflow: hidden;
}

.upload-tips__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.upload-tips__badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  border-radius: var(--radius-pill);
  margin: var(--space-sm) 0;
}

.upload-tips__badge--good {
  background-color: hsl(145, 63%, 90%);
  color: hsl(145, 63%, 30%);
}

.upload-tips__badge--bad {
  background-color: hsl(6, 78%, 92%);
  color: hsl(6, 78%, 35%);
}

.upload-tips__text {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  padding: 0 var(--space-sm) var(--space-sm);
}

/* ---- Personalise Upload ---- */
.personalise-upload {
  max-width: 500px;
  margin-inline: auto;
  margin-top: var(--space-xl);
}

.personalise-upload__privacy {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-align: center;
  margin-top: var(--space-sm);
}

/* ---- Comparison Slider ---- */
.comparison-slider {
  position: relative;
  max-width: 800px;
  margin-inline: auto;
  overflow: hidden;
  border-radius: var(--radius-lg);
  cursor: ew-resize;
  user-select: none;
}

.comparison-slider__before,
.comparison-slider__after {
  position: relative;
}

.comparison-slider__after {
  position: absolute;
  inset: 0;
  clip-path: inset(0 0 0 50%);
}

.comparison-slider__before img,
.comparison-slider__after img {
  width: 100%;
  height: auto;
  display: block;
}

.comparison-slider__label {
  position: absolute;
  bottom: var(--space-md);
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-pill);
  color: var(--color-text-white);
}

.comparison-slider__label--before {
  left: var(--space-md);
  background-color: var(--color-text-muted);
}

.comparison-slider__label--after {
  right: var(--space-md);
  background-color: var(--color-primary);
}

.comparison-slider__handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

.comparison-slider__handle-line {
  position: absolute;
  inset: 0;
  background-color: var(--color-bg-white);
  box-shadow: 0 0 4px rgba(0, 0, 0, 0.3);
}

.comparison-slider__handle-circle {
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-circle);
  background-color: var(--color-bg-white);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.comparison-slider__handle-circle svg {
  width: 14px;
  height: 14px;
  color: var(--color-text-muted);
}

/* ---- Trust Pillars ---- */
.trust-pillars__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  text-align: center;
}

.trust-pillars__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.trust-pillars__icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-circle);
  background-color: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
}

.trust-pillars__icon svg {
  width: 28px;
  height: 28px;
  color: var(--color-primary);
}

.trust-pillars__title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-dark);
}

.trust-pillars__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  max-width: 280px;
}

/* ---- Reactions Carousel ---- */
.reactions-slide {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
}

.reactions-slide img,
.reactions-slide video {
  width: 100%;
  height: auto;
  display: block;
}

.reactions-slide__play {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 56px;
  border-radius: var(--radius-circle);
  background-color: var(--color-primary);
  color: var(--color-text-white);
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-fast);
}

.reactions-slide__play:hover {
  transform: translate(-50%, -50%) scale(1.1);
}

.reactions-slide__play svg {
  width: 24px;
  height: 24px;
  margin-inline-start: 3px;
}

/* ---- Featured Logos (Product) ---- */
.product-logos {
  padding: var(--space-2xl) 0;
  text-align: center;
}

/* ---- Related Products ---- */
.related-products {
  background-color: var(--color-bg-light);
}

.related-products__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

/* ---- Add to Cart on Product Cards ---- */
.product-card__add-to-cart {
  margin-top: var(--space-sm);
  width: 100%;
}

/* ---- Personalise Split Layout ---- */
.personalise__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: start;
}

.personalise__left .section-title {
  text-align: start;
  margin-bottom: var(--space-lg);
}

.personalise__left .section-title__label {
  margin-bottom: var(--space-sm);
}

.personalise__desc {
  font-size: var(--font-size-base);
  color: var(--color-text-body);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-xl);
}

.personalise__left .step-flow {
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: 0;
}

/* ---- Upload Tips (Right Column) ---- */
.personalise__right {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.personalise__tips-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.personalise__tip {
  text-align: center;
}

.personalise__tip-image {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-circle);
  overflow: hidden;
  margin-inline: auto;
  margin-bottom: var(--space-sm);
  position: relative;
}

.personalise__tip-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.personalise__tip-badge {
  position: absolute;
  bottom: 4px;
  right: 4px;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-circle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-white);
}

.personalise__tip-badge--good {
  background-color: hsl(145, 63%, 42%);
}

.personalise__tip-badge--bad {
  background-color: hsl(6, 78%, 50%);
}

.personalise__tip-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.personalise__upload-wrap {
  max-width: 100%;
}

.personalise__privacy {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-align: center;
  margin-top: var(--space-sm);
}

/* ---- Comparison Split Layout ---- */
.comparison__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.comparison__text {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.comparison__heading {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-dark);
  line-height: var(--line-height-tight);
}

.comparison__desc {
  font-size: var(--font-size-base);
  color: var(--color-text-body);
  line-height: var(--line-height-relaxed);
}

/* ---- Trust Pillars (Purple Gradient) ---- */
.trust-pillars--purple {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: var(--color-text-white);
}

.trust-pillars--purple .trust-pillars__heading {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  text-align: center;
  margin-bottom: var(--space-2xl);
  color: var(--color-text-white);
}

.trust-pillars--purple .trust-pillars__icon {
  background-color: rgba(255, 255, 255, 0.2);
}

.trust-pillars--purple .trust-pillars__icon svg {
  color: var(--color-text-white);
}

.trust-pillars--purple .trust-pillars__title {
  color: var(--color-text-white);
}

.trust-pillars--purple .trust-pillars__desc {
  color: rgba(255, 255, 255, 0.8);
}

/* ============================================
   Responsive -- 1024px
   ============================================ */
@media (max-width: 1024px) {
  .product__layout {
    grid-template-columns: 50% 50%;
    gap: var(--space-xl);
  }
}

/* ============================================
   Responsive -- 768px (Tablet)
   ============================================ */
@media (max-width: 768px) {
  .product__layout {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .product-gallery {
    flex-direction: column-reverse;
    position: static;
  }

  .product-gallery__thumbs-col {
    width: 100%;
    height: 68px;
  }

  .product-gallery__thumbs-swiper {
    position: relative;
    height: 100%;
  }

  .product-gallery__thumbs-swiper .swiper-wrapper {
    flex-direction: row;
  }

  .product-gallery__thumbs-swiper .swiper-slide {
    width: 60px !important;
  }

  .product-info__title {
    font-size: var(--font-size-xl);
  }

  .step-flow {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

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

  .trust-pillars__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

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

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

  .personalise__left .step-flow {
    grid-template-columns: 1fr;
  }

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

/* ============================================
   Responsive -- 480px (Mobile)
   ============================================ */
@media (max-width: 480px) {
  .upload-tips__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-sm);
  }

  .related-products__grid {
    grid-template-columns: 1fr;
  }

  .product-actions__row {
    flex-direction: column;
  }

  .product-actions__row .quantity-selector {
    width: 100%;
    justify-content: center;
  }

  .product-actions__row .btn--full {
    width: 100%;
  }
}