/* ── Shop / PLP ──────────────────────────────────────────── */

.shop-header {
  padding-block: var(--sp-8) var(--sp-5);
  border-bottom: 1px solid var(--border);
}

.shop-header__inner {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--sp-4);
}

.shop-header__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: var(--fw-light);
  letter-spacing: var(--ls-tight);
}

.shop-header__count {
  font-size: var(--text-sm);
  color: var(--text-muted);
  letter-spacing: var(--ls-wide);
  white-space: nowrap;
}

/* Toolbar */

.shop-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-2);
  padding-block: var(--sp-3);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: var(--header-h);
  background: var(--bg);
  z-index: var(--z-above);
}

.shop-toolbar__left {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.filter-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: var(--text-xs);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--color-ink);
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color var(--t-fast);
}

.filter-toggle:hover { border-color: var(--color-ink); }

.filter-toggle svg { width: 0.875rem; height: 0.875rem; }

.active-filters {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  flex-wrap: wrap;
}

.filter-chip {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0.625rem;
  font-size: var(--text-xs);
  letter-spacing: var(--ls-wide);
  background: var(--color-ink);
  color: var(--color-paper);
  border-radius: var(--radius-full);
}

.filter-chip__remove {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 0.875rem;
  height: 0.875rem;
}

.filter-chip__remove svg { width: 0.625rem; height: 0.625rem; }

.sort-select {
  font-size: var(--text-xs);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-wide);
  color: var(--color-ink);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 2rem 0.5rem 0.875rem;
  background-color: transparent;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='7' viewBox='0 0 10 7'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%230C0C0C' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  appearance: none;
  cursor: pointer;
  transition: border-color var(--t-fast);
}

.sort-select:hover { border-color: var(--color-ink); }

/* Layout: grid + optional sidebar */

.shop-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-6);
  padding-block: var(--sp-6);
}

/* Filter panel (mobile: full-screen sheet; desktop: sidebar) */

.filter-panel {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--color-paper);
  z-index: var(--z-drawer);
  flex-direction: column;
  transform: translateY(100%);
  transition: transform var(--t-slow) var(--ease-out);
}

.filter-panel.is-open {
  display: flex;
  transform: translateY(0);
}

.filter-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-3);
  border-bottom: 1px solid var(--border);
}

.filter-panel__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--fw-light);
}

.filter-panel__close {
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-ink);
}

.filter-panel__close svg { width: 1rem; height: 1rem; }

.filter-panel__body {
  flex: 1;
  overflow-y: auto;
  padding: var(--sp-3);
  overscroll-behavior: contain;
}

.filter-panel__footer {
  padding: var(--sp-3);
  border-top: 1px solid var(--border);
  display: flex;
  gap: var(--sp-2);
}

/* Filter group */

.filter-group {
  border-bottom: 1px solid var(--border);
  padding-block: var(--sp-3);
}

.filter-group:last-child { border-bottom: none; }

.filter-group__toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  font-size: var(--text-xs);
  font-weight: var(--fw-semi);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--color-ink);
  padding-bottom: var(--sp-2);
}

.filter-group__toggle svg {
  width: 0.875rem;
  height: 0.875rem;
  transition: transform var(--t-fast);
}

.filter-group.is-open .filter-group__toggle svg {
  transform: rotate(180deg);
}

.filter-group__options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-group__body {
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--t-base) var(--ease);
}

.filter-group.is-open .filter-group__body {
  max-height: 24rem;
}

/* Filter option buttons (size, color, etc.) */

.filter-option {
  padding: 0.375rem 0.875rem;
  font-size: var(--text-xs);
  letter-spacing: var(--ls-wide);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--color-ink);
  transition: background var(--t-fast), border-color var(--t-fast);
  cursor: pointer;
}

.filter-option:hover {
  border-color: var(--color-ink);
}

.filter-option.is-selected {
  background: var(--color-ink);
  border-color: var(--color-ink);
  color: var(--color-paper);
}

/* Product grid */

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-3) var(--sp-2);
}

/* Load more */

.load-more-wrap {
  text-align: center;
  padding-top: var(--sp-8);
}

/* Empty state */

.shop-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--sp-16) var(--sp-4);
}

.shop-empty__icon {
  width: 2.5rem;
  height: 2.5rem;
  color: var(--text-muted);
  margin-inline: auto;
  margin-bottom: var(--sp-3);
}

.shop-empty__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--fw-light);
  margin-bottom: var(--sp-1);
}

.shop-empty__desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

/* Desktop */

@media (min-width: 768px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--sp-4) var(--sp-3);
  }
}

@media (min-width: 1024px) {
  .shop-toolbar {
    top: var(--header-h-lg);
  }

  .filter-panel {
    position: sticky;
    top: calc(var(--header-h-lg) + 3.5rem);
    inset: auto;
    display: block;
    transform: none;
    width: 14rem;
    flex-shrink: 0;
    background: transparent;
    border-right: 1px solid var(--border);
    padding-right: var(--sp-4);
    max-height: calc(100vh - var(--header-h-lg) - 4rem);
    overflow-y: auto;
  }

  .filter-panel__header { display: none; }
  .filter-panel__footer { display: none; }
  .filter-panel__body { padding: 0; overflow: visible; }

  .filter-group__body { overflow: visible; max-height: none; }

  .shop-layout {
    grid-template-columns: 14rem 1fr;
  }

  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .filter-toggle { display: none; }
}

@media (min-width: 1280px) {
  .product-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}