/* =============================================
   AULA — Product Page Styles
   Extends base.css + style.css
   ============================================= */

/* ---- Product Hero ---- */
.product-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 90vh;
  align-items: stretch;
}

.product-hero__gallery {
  position: relative;
  background: var(--color-surface-2);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.product-hero__main-img {
  flex: 1;
  overflow: hidden;
  position: relative;
}
.product-hero__main-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.product-hero__thumbs {
  display: flex;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
}
.product-hero__thumb {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 2px solid transparent;
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color 180ms;
}
.product-hero__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.product-hero__thumb.active {
  border-color: var(--color-primary);
}
.product-hero__thumb:hover {
  border-color: var(--color-border);
}
.product-hero__thumb.active:hover {
  border-color: var(--color-primary);
}

/* ---- Product Info ---- */
.product-hero__info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(var(--space-10), 6vw, var(--space-20)) clamp(var(--space-8), 5vw, var(--space-16));
  background: var(--color-bg);
  overflow-y: auto;
}

.product-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.product-breadcrumb a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 160ms;
}
.product-breadcrumb a:hover { color: var(--color-text); }
.product-breadcrumb__sep { color: var(--color-text-faint); }

.product-category {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.product-category::before {
  content: '';
  width: 20px;
  height: 1px;
  background: var(--color-primary);
  flex-shrink: 0;
}

.product-name {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: -0.01em;
  line-height: 0.9;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}
.product-name em {
  font-style: italic;
  font-weight: 300;
  color: var(--color-primary);
}

.product-tagline {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 42ch;
  margin-bottom: var(--space-3);
  font-style: italic;
  font-weight: 500;
}

.product-description {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
  max-width: 44ch;
  margin-bottom: var(--space-6);
}

.product-hero-ingredient {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  background: var(--color-primary-soft);
  border: 1px solid oklch(from var(--color-primary) l c h / 0.2);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-5);
  margin-bottom: var(--space-6);
}
.product-hero-ingredient__pct {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 800;
  text-transform: uppercase;
  color: var(--color-primary);
  line-height: 1;
}
.product-hero-ingredient__name {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.product-divider {
  width: 100%;
  height: 1px;
  background: var(--color-divider);
  margin: var(--space-6) 0;
}

.product-price-row {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}
.product-price {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  text-transform: uppercase;
  color: var(--color-text);
  line-height: 1;
}
.product-size {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
}

.product-add-row {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-8);
}

.btn--add-to-cart {
  flex: 1;
  justify-content: center;
  padding: var(--space-5) var(--space-8);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.12em;
  background: var(--color-text);
  color: var(--color-text-inverse);
  border: 1.5px solid var(--color-text);
  border-radius: var(--radius-full);
  transition: all 180ms var(--ease-out);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  font-family: var(--font-body);
}
.btn--add-to-cart:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
}
.btn--add-to-cart.added {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.btn--wishlist {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-full);
  border: 1.5px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  flex-shrink: 0;
  transition: all 180ms;
  cursor: pointer;
  background: transparent;
}
.btn--wishlist:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.product-trust {
  display: flex;
  gap: var(--space-5);
  flex-wrap: wrap;
}
.product-trust-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
}
.product-trust-item svg {
  color: var(--color-primary);
  flex-shrink: 0;
}

@media (max-width: 900px) {
  .product-hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }
  .product-hero__gallery {
    height: 70vw;
    min-height: 320px;
    max-height: 520px;
  }
  .product-hero__info {
    padding: var(--space-8) var(--space-5) var(--space-10);
  }
  .product-name {
    font-size: var(--text-2xl);
  }
}

/* ---- Tabs ---- */
.product-tabs-section {
  background: var(--color-surface);
  border-top: 1px solid var(--color-divider);
  border-bottom: 1px solid var(--color-divider);
}
.product-tabs-nav {
  display: flex;
  border-bottom: 1px solid var(--color-divider);
  overflow-x: auto;
  scrollbar-width: none;
}
.product-tabs-nav::-webkit-scrollbar { display: none; }
.product-tab-btn {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  padding: var(--space-5) var(--space-8);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  flex-shrink: 0;
  cursor: pointer;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  transition: color 160ms, border-color 160ms;
}
.product-tab-btn:hover { color: var(--color-text); }
.product-tab-btn.active {
  color: var(--color-text);
  border-bottom-color: var(--color-primary);
}

.product-tab-panel {
  display: none;
  padding: clamp(var(--space-8), 4vw, var(--space-12)) 0;
}
.product-tab-panel.active { display: block; }

/* Details tab */
.product-details-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}
.product-benefits-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: var(--space-6);
}
.product-benefit {
  display: flex;
  align-items: flex-start;
  gap: var(--space-5);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-divider);
}
.product-benefit:first-child { border-top: 1px solid var(--color-divider); }
.product-benefit__num {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 800;
  color: oklch(from var(--color-text) l c h / 0.1);
  line-height: 1;
  flex-shrink: 0;
  width: 2.5rem;
}
.product-benefit__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-1);
}
.product-benefit__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

.product-how-to {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-top: var(--space-6);
}
.product-how-step {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-divider);
}
.product-how-step:first-child { border-top: 1px solid var(--color-divider); }
.product-how-step__num {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.product-how-step__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}
.product-how-step__text strong {
  display: block;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-1);
  font-size: var(--text-base);
}

@media (max-width: 768px) {
  .product-details-grid {
    grid-template-columns: 1fr;
    gap: var(--space-10);
  }
}

/* Ingredients tab */
.product-formula-intro {
  font-size: var(--text-base);
  line-height: 1.75;
  color: var(--color-text-muted);
  max-width: 70ch;
  margin-bottom: var(--space-10);
}
.product-ingredient-card__tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  border-radius: var(--radius-full);
  padding: 0.25em 0.85em;
  line-height: 1.4;
  margin-bottom: var(--space-3);
}
.product-key-ingredients {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-10);
}
.product-ingredient-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}
.product-ingredient-card__pct {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 800;
  text-transform: uppercase;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-2);
}
.product-ingredient-card__name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  line-height: 1.1;
}
.product-ingredient-card__role {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.5;
}

.product-inci-label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}
.product-inci {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  line-height: 1.8;
  letter-spacing: 0.02em;
}
.product-inci strong {
  color: var(--color-primary);
  font-weight: 600;
}

@media (max-width: 768px) {
  .product-key-ingredients {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 480px) {
  .product-key-ingredients {
    grid-template-columns: 1fr;
  }
}

/* ---- Layering Guide ---- */
.product-layering {
  background: var(--color-surface-2);
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
}
.product-layering-grid {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-8);
  align-items: stretch;
}
.product-layer-step {
  flex: 1;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  position: relative;
  transition: box-shadow 200ms;
}
.product-layer-step.current {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}
.product-layer-step__order {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
}
.product-layer-step.current .product-layer-step__order {
  color: var(--color-primary);
}
.product-layer-step__name {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-text);
  line-height: 1.2;
}
.product-layer-step__hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
  line-height: 1.4;
}

.product-layer-arrow {
  display: flex;
  align-items: center;
  color: var(--color-text-faint);
  flex-shrink: 0;
  font-size: 1rem;
  padding-top: var(--space-5);
}

@media (max-width: 768px) {
  .product-layering-grid {
    flex-direction: column;
    gap: var(--space-1);
  }
  .product-layer-arrow {
    transform: rotate(90deg);
    align-self: center;
    padding-top: 0;
  }
}

/* ---- You Might Also Like ---- */
.product-also-like {
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
  background: var(--color-bg);
}
.product-also-like-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-top: var(--space-8);
}
@media (max-width: 640px) {
  .product-also-like-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---- Prev / Next nav ---- */
.product-prev-next {
  display: flex;
  align-items: stretch;
  border-top: 1px solid var(--color-divider);
  background: var(--color-surface);
}
.product-prev-next__btn {
  flex: 1;
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-6) var(--space-8);
  text-decoration: none;
  color: var(--color-text-muted);
  transition: all 200ms var(--ease-out);
}
.product-prev-next__btn:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}
.product-prev-next__btn--next {
  justify-content: flex-end;
  text-align: right;
  border-left: 1px solid var(--color-divider);
}
.product-prev-next__btn--all {
  flex: 0 0 auto;
  border-left: 1px solid var(--color-divider);
  border-right: 1px solid var(--color-divider);
  padding-inline: var(--space-8);
  justify-content: center;
  flex-direction: column;
  gap: var(--space-1);
}
.product-prev-next__label {
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-faint);
}
.product-prev-next__name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-text);
  line-height: 1.1;
}
.product-prev-next__arrow {
  font-size: 1.25rem;
  flex-shrink: 0;
  transition: transform 200ms var(--ease-out);
}
.product-prev-next__btn:hover .product-prev-next__arrow { transform: translateX(-3px); }
.product-prev-next__btn--next:hover .product-prev-next__arrow { transform: translateX(3px); }

@media (max-width: 600px) {
  .product-prev-next { flex-wrap: wrap; }
  .product-prev-next__btn--all { order: -1; flex: 1 0 100%; border-right: none; border-bottom: 1px solid var(--color-divider); }
  .product-prev-next__btn--next { border-left: 1px solid var(--color-divider); }
}

/* =============================================
   PRODUCT VIDEO — in-motion block (additive)
   ============================================= */
.product-video-section {
  background: var(--color-bg);
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
}
.product-video-card {
  margin: 0 auto;
  max-width: 720px;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-surface-2);
}
.product-video-card video {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}
/* When two clips sit side by side */
.product-video-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(var(--space-4), 2vw, var(--space-6));
  max-width: 980px;
  margin: 0 auto;
}
.product-video-grid .product-video-card {
  max-width: none;
  aspect-ratio: 16 / 9;
}
.product-video-grid .product-video-card video {
  height: 100%;
}
@media (max-width: 768px) {
  .product-video-grid {
    grid-template-columns: 1fr;
  }
  .product-video-grid .product-video-card {
    aspect-ratio: 16 / 9;
  }
}