/* css/catalog.css — Scroll-section catalog layout */

/* ── Hero ────────────────────────────────────────────────────────────────── */
.catalog-hero {
  padding: var(--s-16) var(--gutter) var(--s-12);
  text-align: center;
  border-bottom: 1px solid var(--c-border-lt);
}

.catalog-hero__eyebrow {
  font-size: var(--t-xs);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-light);
  margin-bottom: var(--s-4);
}

.catalog-hero__title {
  font-family: var(--f-display);
  font-weight: 300;
  font-size: clamp(var(--t-2xl), 8vw, var(--t-3xl));
  line-height: 1;
  color: var(--c-black);
  margin-bottom: var(--s-4);
  letter-spacing: -0.01em;
}

.catalog-hero__sub {
  max-width: 480px;
  margin: 0 auto;
  font-size: var(--t-sm);
  color: var(--c-light);
  line-height: 1.7;
}

/* ── View toggle (list / grid) ──────────────────────────────────────────── */
.view-toggle {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
  padding-left: var(--s-4);
}

@media (min-width: 768px) {
  .view-toggle {
    margin-top: auto;
    padding: var(--s-4) var(--s-5);
    border-top: 1px solid var(--c-border-lt);
  }
}

.view-toggle__btn {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-light);
  border: 1px solid transparent;
  background: none;
  cursor: pointer;
  transition: color var(--ease-fast), border-color var(--ease-fast);
}

.view-toggle__btn:hover { color: var(--c-mid); }

.view-toggle__btn.active {
  color: var(--c-black);
  border-color: var(--c-border-lt);
}

/* ── Catalog body (sidebar + content) ──────────────────────────────────── */
.catalog-body {
  display: block;
}

/* ── Series filter — horizontal on mobile, sidebar on desktop ──────────── */
.series-filter {
  display: flex;
  align-items: center;
  gap: var(--s-2);
  padding: var(--s-4) var(--gutter);
  border-bottom: 1px solid var(--c-border-lt);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  background: var(--c-warm-white);
}

.filter-btn {
  flex-shrink: 0;
  padding: var(--s-2) var(--s-4);
  font-size: var(--t-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-light);
  border: 1px solid transparent;
  transition: color var(--ease-base), border-color var(--ease-base);
  white-space: nowrap;
}

.filter-btn:hover,
.filter-btn.active {
  color: var(--c-black);
  border-color: var(--c-black);
}

/* Desktop: sidebar layout */
@media (min-width: 768px) {
  .catalog-body {
    display: flex;
    align-items: flex-start;
  }

  .series-filter {
    flex-direction: column;
    align-items: stretch;
    width: 170px;
    flex-shrink: 0;
    padding: var(--s-4) 0;
    gap: 0;
    border-bottom: none;
    border-right: 1px solid var(--c-border-lt);
    overflow-x: visible;
    overflow-y: auto;
    position: sticky;
    top: var(--header-h);
    height: calc(100vh - var(--header-h));
    z-index: 50;
  }

  .filter-btn {
    text-align: left;
    padding: var(--s-2) var(--s-5);
    border: none;
    border-left: 2px solid transparent;
  }

  .filter-btn:hover {
    border: none;
    border-left: 2px solid var(--c-light);
    color: var(--c-dark);
  }

  .filter-btn.active {
    border: none;
    border-left: 2px solid var(--c-black);
    color: var(--c-black);
    font-weight: 500;
  }

  #catalog-grid {
    flex: 1;
    min-width: 0;
  }
}

/* ── Catalog container (scroll list of model sections) ───────────────────── */
#catalog-grid {
  display: block;
}

/* ── Model section ───────────────────────────────────────────────────────── */
.model-section {
  border-bottom: 1px solid var(--c-border-lt);
  padding: var(--s-12) 0 var(--s-10);
  /* Scroll-reveal: start hidden, animate in when .revealed is added */
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.model-section.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Header: series label + model name */
.model-section__header {
  padding: 0 var(--gutter) var(--s-8);
}

.model-section__series {
  font-size: var(--t-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-light);
  margin-bottom: var(--s-2);
}

.model-section__name {
  font-family: var(--f-display);
  font-weight: 300;
  font-size: clamp(var(--t-2xl), 6vw, var(--t-3xl));
  line-height: 1;
  color: var(--c-black);
  letter-spacing: -0.01em;
}

/* ── Editorial image pair ────────────────────────────────────────────────── */
.model-section__editorial {
  display: flex;
  gap: 2px;
  margin-bottom: var(--s-8);
  background: var(--c-border-lt); /* hairline between the two images */
}

.editorial-img-wrap {
  flex: 1 1 50%;
  min-width: 0;
  aspect-ratio: 4 / 5;
  overflow: hidden;
  background: var(--c-off-white);
}

@media (min-width: 768px) {
  .editorial-img-wrap { aspect-ratio: 1 / 1; }
}

@media (min-width: 1024px) {
  .editorial-img-wrap { aspect-ratio: 5 / 4; }
}

.editorial-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* ── Variant rows — vertical stack, full width ───────────────────────────── */
.model-section__variants {
  display: flex;
  flex-direction: column;
  gap: 1px;                     /* hairline separator between rows */
  background: var(--c-border-lt);
  margin-top: var(--s-8);
}

/* ── Single variant row — full-width horizontal layout ───────────────────── */
.variant-card {
  display: flex;
  flex-direction: row;
  align-items: center;
  width: 100%;
  cursor: pointer;
  background: var(--c-warm-white);
  outline: none;
  transition: background var(--ease-fast);
}

.variant-card:hover,
.variant-card:focus-visible {
  background: var(--c-off-white);
}

.variant-card:focus-visible {
  outline: 2px solid var(--c-black);
  outline-offset: -2px;
}

/* Left: image — fixed width */
.variant-card__img-wrap {
  flex: 0 0 220px;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--c-off-white);
}

@media (min-width: 768px) {
  .variant-card__img-wrap { flex-basis: 300px; }
}

@media (min-width: 1280px) {
  .variant-card__img-wrap { flex-basis: 380px; }
}

.variant-card__img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: var(--s-4);
  display: block;
  transition: transform var(--ease-slow);
}

.variant-card:hover .variant-card__img-wrap img {
  transform: scale(1.03);
}

/* Right: label — grows to fill remaining width */
.variant-card__label {
  flex: 1;
  padding: var(--s-5) var(--s-8);
  display: flex;
  flex-direction: column;
  gap: var(--s-1);
  border-left: 1px solid var(--c-border-lt);
}

.variant-card__code {
  font-size: var(--t-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-light);
}

.variant-card__name {
  font-family: var(--f-display);
  font-weight: 300;
  font-size: clamp(var(--t-xl), 3vw, var(--t-2xl));
  color: var(--c-black);
  letter-spacing: 0.01em;
  line-height: 1.1;
}

.variant-card__price {
  font-size: var(--t-sm);
  color: var(--c-mid);
  letter-spacing: 0.06em;
  margin-top: var(--s-2);
}

/* ── In-cart badge ──────────────────────────────────────────────────────── */
.variant-card__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
  font-size: var(--t-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-top: var(--s-1);
}

.variant-card--in-cart {
  border-left: 3px solid var(--c-accent);
}

/* ── Quick-add button ──────────────────────────────────────────────────── */
.variant-card__add {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  margin-right: var(--s-4);
  border: 1px solid var(--c-border-lt);
  font-size: var(--t-md);
  font-weight: 300;
  color: var(--c-mid);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--ease-fast);
  background: transparent;
}

.variant-card__add:hover {
  background: var(--c-black);
  color: var(--c-warm-white);
  border-color: var(--c-black);
}

.variant-card__add--added {
  background: var(--c-success);
  color: #fff;
  border-color: var(--c-success);
}

@media (max-width: 480px) {
  .variant-card__add {
    width: 36px;
    height: 36px;
    margin-right: var(--s-2);
  }
}

/* ── Mobile responsive overrides ─────────────────────────────────────────── */
@media (max-width: 600px) {
  /* Editorial images: side by side, smaller */
  .model-section__editorial {
    flex-direction: row;
    gap: 2px;
  }

  .editorial-img-wrap {
    flex: 1 1 50%;
    aspect-ratio: 1 / 1;
  }

  /* Variant cards: vertical layout (image on top, text below) */
  .model-section__variants {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1px;
  }

  .variant-card {
    flex-direction: column;
    align-items: stretch;
    position: relative;
  }

  .variant-card__img-wrap {
    flex: none;
    width: 100%;
    aspect-ratio: 5 / 4;
  }

  .variant-card__label {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    border-left: none;
    border-top: none;
    padding: var(--s-3) var(--s-4);
    background: linear-gradient(to top, rgba(255,255,255,0.95) 60%, rgba(255,255,255,0) 100%);
  }

  .variant-card__name {
    font-size: var(--t-md);
  }

  /* Quick-add: overlay top-right */
  .variant-card__add {
    position: absolute;
    top: var(--s-2);
    right: var(--s-2);
    margin: 0;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(4px);
  }

  /* Reduce section padding */
  .model-section {
    padding: var(--s-8) 0 var(--s-6);
  }

  .model-section__header {
    padding: 0 var(--s-4) var(--s-5);
  }

  /* Tighter hero on phones */
  .catalog-hero {
    padding: var(--s-10) var(--s-4) var(--s-8);
  }
}

/* ═══════════════════════════════════════════════════════════════════════════
   GRID VIEW MODE
   ═══════════════════════════════════════════════════════════════════════════ */

/* Hide editorials in grid mode to save space */
#catalog-grid[data-view="grid"] .model-section__editorial {
  display: none;
}

/* Compact model header */
#catalog-grid[data-view="grid"] .model-section {
  padding: var(--s-6) 0 var(--s-4);
}

#catalog-grid[data-view="grid"] .model-section__header {
  padding-bottom: var(--s-4);
}

#catalog-grid[data-view="grid"] .model-section__name {
  font-size: clamp(var(--t-lg), 4vw, var(--t-xl));
}

/* Variants: 2-column grid */
#catalog-grid[data-view="grid"] .model-section__variants {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin-top: var(--s-4);
}

/* Variant card: vertical layout */
#catalog-grid[data-view="grid"] .variant-card {
  flex-direction: column;
  align-items: stretch;
  position: relative;
}

#catalog-grid[data-view="grid"] .variant-card__img-wrap {
  flex: none;
  width: 100%;
  aspect-ratio: 4 / 3;
}

#catalog-grid[data-view="grid"] .variant-card__label {
  border-left: none;
  border-top: 1px solid var(--c-border-lt);
  padding: var(--s-3) var(--s-4);
}

#catalog-grid[data-view="grid"] .variant-card__name {
  font-size: var(--t-md);
}

#catalog-grid[data-view="grid"] .variant-card__price {
  margin-top: var(--s-1);
}

/* Quick-add: overlay top-right */
#catalog-grid[data-view="grid"] .variant-card__add {
  position: absolute;
  top: var(--s-2);
  right: var(--s-2);
  margin: 0;
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(4px);
}

/* Mobile: single column in grid mode */
@media (max-width: 600px) {
  #catalog-grid[data-view="grid"] .model-section__variants {
    grid-template-columns: 1fr;
  }
}