/* ==========================================
   SHOP PAGE COMPONENT
   Depends on: master.css (variables, .container, .btn, .btn-icon, .divider)
   ========================================== */

.shop-page {
  padding: var(--space-7) 0 var(--space-9);
}

.shop-page__title {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--space-8);
}

.shop-page__title h1 {
  margin-bottom: var(--space-3);
}

/* ------------------------------------------
   Layout
   ------------------------------------------ */
.shop-page__layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: var(--space-7);
  align-items: start;
}

.shop-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  position: sticky;
  top: var(--space-5);
}

/* ------------------------------------------
   Filter Groups (shared between sidebar + mobile modal)
   ------------------------------------------ */
.filter-group__title {
  font-family: var(--font-main);
  font-size: var(--text-small);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-white);
}

.filter-group__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.filter-checkbox {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  cursor: pointer;
}

.filter-checkbox__input {
  width: 16px;
  height: 16px;
  min-width: 16px;
  background-color: var(--color-surface-1);
  border: 1px solid var(--color-border-mid);
  border-radius: var(--radius-sm);
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  position: relative;
  transition: background-color var(--t-base), border-color var(--t-base);
}

.filter-checkbox__input:checked {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.filter-checkbox__input:checked::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 1px;
  width: 5px;
  height: 8px;
  border: 2px solid var(--color-bg);
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}

.filter-checkbox__label {
  font-size: var(--text-small);
  color: var(--color-gray);
}

.filter-checkbox--all .filter-checkbox__label {
  font-weight: 500;
  color: var(--color-white);
}

.filter-checkbox__children {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding-left: var(--space-5);
  margin-top: var(--space-2);
}

/* ------------------------------------------
   Most Wanted Widget
   ------------------------------------------ */
.most-wanted-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
}

.most-wanted-item {
  display: block;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-base);
  overflow: hidden;
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-border);
  transition: border-color var(--t-base);
}

.most-wanted-item:hover {
  border-color: var(--color-primary);
}

.most-wanted-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ------------------------------------------
   Toolbar (count / grid-density / sort)
   ------------------------------------------ */
.shop-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.shop-toolbar__count {
  font-size: var(--text-small);
  color: var(--color-gray);
  margin: 0;
}

.shop-toolbar__controls {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.grid-density {
  display: flex;
  gap: var(--space-1);
}

.grid-density__btn {
  width: 36px;
  height: 36px;
}

.grid-density__btn svg {
  width: 16px;
  height: 16px;
}

.grid-density__btn.is-active {
  color: var(--color-primary);
  background-color: var(--color-surface-2);
}

.shop-toolbar__sort {
  width: auto;
  min-width: 180px;
}

/* ------------------------------------------
   Active Filter Chips
   ------------------------------------------ */
.shop-active-filters {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-4) 0;
}

.shop-active-filters:empty {
  display: none;
  margin: 0;
}

.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-micro);
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-primary-light);
  background-color: var(--color-surface-2);
  border: 1px solid var(--color-primary-dim);
  border-radius: 999px;
  padding: var(--space-1) var(--space-2) var(--space-1) var(--space-3);
}

.filter-chip__remove {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  color: var(--color-gray-dark);
}

.filter-chip__remove:hover {
  color: var(--color-danger-text);
}

.filter-chip__remove svg {
  width: 10px;
  height: 10px;
}

.shop-clear-filters {
  margin-left: auto;
  font-size: var(--text-micro);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-gray-dark);
}

.shop-clear-filters:hover {
  color: var(--color-danger-text);
}

/* ------------------------------------------
   Product Grid — responsive column density
   ------------------------------------------ */
.product-grid {
  display: grid;
  gap: var(--space-5);
}

.product-grid[data-columns="4"] {
  grid-template-columns: repeat(4, 1fr);
}
.product-grid[data-columns="3"] {
  grid-template-columns: repeat(3, 1fr);
}
.product-grid[data-columns="2"] {
  grid-template-columns: repeat(2, 1fr);
}
.product-grid[data-columns="1"] {
  grid-template-columns: 1fr;
}

/* ------------------------------------------
   Load More
   ------------------------------------------ */
.shop-load-more {
  display: flex;
  justify-content: center;
  margin-top: var(--space-7);
}

#shop-load-more-btn.is-loading {
  position: relative;
  color: transparent;
}

#shop-load-more-btn.is-loading::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 16px;
  height: 16px;
  margin: -8px 0 0 -8px;
  border: 2px solid var(--color-bg);
  border-top-color: transparent;
  border-radius: 50%;
  animation: load-more-spin 0.6s linear infinite;
}

@keyframes load-more-spin {
  to { transform: rotate(360deg); }
}

/* ------------------------------------------
   Empty State
   ------------------------------------------ */
.shop-empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 50vh;
  padding: var(--space-8) var(--space-5);
}

.shop-empty-state__img {
  width: 160px;
  height: 160px;
  object-fit: contain;
  margin-bottom: var(--space-5);
}

.shop-empty-state h2 {
  margin-bottom: var(--space-3);
}

.shop-empty-state p {
  max-width: 480px;
  margin-bottom: var(--space-5);
}

/* ------------------------------------------
   Mobile Filter Trigger + Modal
   ------------------------------------------ */
.mobile-filter-trigger {
  display: none;
  position: fixed;
  bottom: var(--space-5);
  left: 50%;
  transform: translateX(-50%);
  z-index: var(--z-sticky);
  font-size: var(--text-small);
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-bg);
  background-color: var(--color-primary);
  padding: var(--space-3) var(--space-7);
  border-radius: 999px;
  box-shadow: var(--shadow-lg);
}

.mobile-filter-modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  background-color: var(--color-bg);
  display: flex;
  flex-direction: column;
  visibility: hidden;
  opacity: 0;
  transition: opacity var(--t-base), visibility var(--t-base);
}

.mobile-filter-modal.is-open {
  visibility: visible;
  opacity: 1;
}

.mobile-filter-modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5);
  flex-shrink: 0;
  border-bottom: 1px solid var(--color-border-soft);
}

.mobile-filter-modal__close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  color: var(--color-gray);
}

.mobile-filter-modal__close svg {
  width: 20px;
  height: 20px;
}

.mobile-filter-modal__body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.mobile-filter-modal__footer {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-5);
  border-top: 1px solid var(--color-border-soft);
  flex-shrink: 0;
}

.mobile-filter-modal__footer .btn {
  flex: 1;
}

/* ==========================================
   RESPONSIVE
   ========================================== */
@media (max-width: 999px) {
  .shop-page__layout {
    grid-template-columns: 1fr;
  }

  /* Sidebar disappears entirely on tablet/mobile (confirmed) */
  .shop-sidebar {
    display: none;
  }

  .mobile-filter-trigger {
    display: block;
  }

  /* Tablet: only 3/2 column icons selectable (confirmed) */
  .grid-density__btn[data-columns="4"],
  .grid-density__btn[data-columns="1"] {
    display: none;
  }

  .product-grid[data-columns="4"] {
    grid-template-columns: repeat(3, 1fr); /* fallback if a stale 4-col preference persists from desktop */
  }
}

@media (max-width: 599px) {
  .shop-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .shop-toolbar__controls {
    justify-content: space-between;
  }

  /* Mobile: only 2/1 column icons selectable (confirmed) */
  .grid-density__btn[data-columns="3"] {
    display: none;
  }

  .product-grid[data-columns="3"],
  .product-grid[data-columns="4"] {
    grid-template-columns: repeat(2, 1fr); /* fallback if a stale desktop/tablet preference persists */
  }
}