/* ============================================
   HELSINKI HEELS — Product Page
   ============================================ */

.product-page {
  background: var(--beige);
  min-height: 100dvh;
}

/* --- Product Hero --- */
.product-hero {
  background: var(--red);
  padding: 140px 48px 80px;
  position: relative;
  overflow: hidden;
}

.product-hero__bg-text {
  position: absolute;
  bottom: -5%;
  right: -2%;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20vw;
  line-height: 0.75;
  color: var(--white);
  opacity: 0.06;
  pointer-events: none;
  letter-spacing: -0.05em;
  user-select: none;
}

.product-hero__inner {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.product-hero__content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.product-hero__breadcrumb {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
}
.product-hero__breadcrumb a {
  color: rgba(255,255,255,0.5);
  transition: color 0.2s ease;
}
.product-hero__breadcrumb a:hover { color: var(--white); }
.product-hero__breadcrumb span { margin: 0 8px; }

.product-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(3rem, 6vw, 5.5rem);
  line-height: 0.85;
  letter-spacing: -0.05em;
  text-transform: uppercase;
  color: var(--white);
}

.product-hero__price {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  color: var(--white);
  letter-spacing: -0.02em;
}

.product-hero__desc {
  font-size: 16px;
  color: var(--white);
  opacity: 0.75;
  max-width: 45ch;
  line-height: 1.65;
}

/* --- Product Image --- */
.product-hero__image-wrapper {
  display: flex;
  justify-content: center;
}

.product-hero__image-shell {
  padding: 6px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 20px;
  max-width: 500px;
  width: 100%;
}

.product-hero__image-frame {
  position: relative;
  width: 100%;
  background: var(--blue);
  border: 10px solid var(--charcoal);
  border-radius: 14px;
  transform: translate(12px, 12px);
  box-shadow: var(--shadow-editorial);
  overflow: hidden;
}

.product-hero__image {
  width: 100%;
  height: auto;
  display: block;
  filter: grayscale(100%);
  transition: filter 0.6s var(--ease-out-expo);
}

.product-hero__image-frame:hover .product-hero__image {
  filter: grayscale(0%);
}

/* --- Product Details Section --- */
.product-details {
  padding: 80px 48px;
  background: var(--beige);
}

.product-details__inner {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

/* --- Gallery --- */
.product-gallery {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.product-gallery__main {
  border: 2px solid var(--charcoal);
  overflow: hidden;
  aspect-ratio: 4 / 5;
}

.product-gallery__main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
  transition: filter 0.6s var(--ease-out-expo);
}

.product-gallery__main:hover img {
  filter: grayscale(0%);
}

.product-gallery__thumbs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.product-gallery__thumb {
  border: 2px solid var(--charcoal);
  overflow: hidden;
  aspect-ratio: 1;
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.product-gallery__thumb:hover {
  border-color: var(--red);
}

.product-gallery__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
  transition: filter 0.6s var(--ease-out-expo);
}

.product-gallery__thumb:hover img {
  filter: grayscale(0%);
}

.product-gallery__thumb.active {
  border-color: var(--red);
}

/* --- Purchase Panel --- */
.product-purchase {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.product-purchase__header {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.product-purchase__brand {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--brand-muted);
}

.product-purchase__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 0.9;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.product-purchase__price {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
}

.product-purchase__desc {
  font-size: 15px;
  line-height: 1.7;
  color: var(--charcoal);
  opacity: 0.75;
  max-width: 50ch;
}

/* --- Size Selector --- */
.product-sizes {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.product-sizes__label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--charcoal);
}

.product-sizes__grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 8px;
}

.product-sizes__btn {
  padding: 12px 0;
  border: 2px solid var(--charcoal);
  background: transparent;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  text-align: center;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.product-sizes__btn:hover {
  background: var(--charcoal);
  color: var(--white);
}

.product-sizes__btn.selected {
  background: var(--charcoal);
  color: var(--white);
  box-shadow: 4px 4px 0 var(--red);
}

/* --- Add to Bag --- */
.product-add {
  display: flex;
  gap: 12px;
}

.product-add .btn {
  flex: 1;
  justify-content: center;
}

.product-add__wishlist {
  width: 56px;
  height: 56px;
  border: 2px solid var(--charcoal);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.2s ease, color 0.2s ease;
}

.product-add__wishlist:hover {
  background: var(--charcoal);
  color: var(--white);
}

/* --- Materials Section --- */
.product-materials {
  padding: 100px 48px;
  background: var(--charcoal);
  color: var(--white);
}

.product-materials__inner {
  max-width: 1400px;
  margin: 0 auto;
}

.product-materials__header {
  margin-bottom: 60px;
}

.product-materials__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 0.9;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.product-materials__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.product-material {
  padding: 32px;
  border: 1px solid rgba(255,255,255,0.1);
}

.product-material__icon {
  width: 32px;
  height: 32px;
  margin-bottom: 16px;
  color: var(--yellow);
}

.product-material__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.product-material__text {
  font-size: 14px;
  line-height: 1.65;
  opacity: 0.65;
}

/* --- Related Products --- */
.product-related {
  padding: 100px 48px;
  background: var(--beige);
}

.product-related__inner {
  max-width: 1400px;
  margin: 0 auto;
}

.product-related__header {
  margin-bottom: 48px;
}

.product-related__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 0.9;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.product-related__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-4px); }
  75% { transform: translateX(4px); }
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .product-hero__inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .product-hero__image-shell {
    max-width: 400px;
    margin: 0 auto;
  }

  .product-details__inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .product-materials__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

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

@media (max-width: 640px) {
  .product-hero { padding: 120px 20px 60px; }
  .product-hero__title { font-size: 2.5rem; }
  .product-hero__image-shell { max-width: 300px; }

  .product-details { padding: 60px 20px; }
  .product-sizes__grid { grid-template-columns: repeat(3, 1fr); }

  .product-materials { padding: 60px 20px; }

  .product-related { padding: 60px 20px; }
  .product-related__grid { grid-template-columns: 1fr; }
}