/**
 * Digital Plus — Product Filters
 * Ported from: shopify-theme/assets/filters.css (543 lines, JSX-scoped)
 * Clean implementation using .dp-filters prefix and design tokens
 */

/* ===== Filters Sidebar ===== */
.dp-filters {
  border-right: 1px solid var(--color-border);
  padding-right: var(--spacing-xl);
}

.dp-filters__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--color-border);
}

.dp-filters__title {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--font-size-base);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.dp-filters__clear-all {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  text-decoration: underline;
  cursor: pointer;
  background: none;
  border: none;
  font-family: var(--font-body);
  padding: 0;
  transition: color var(--transition-fast);
}

.dp-filters__clear-all:hover {
  color: var(--color-error);
}

/* ===== Filter Group ===== */
.dp-filter-group {
  margin-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--spacing-lg);
}

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

.dp-filter-group__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  padding: var(--spacing-sm) 0;
  user-select: none;
}

.dp-filter-group__title {
  font-weight: 600;
  text-transform: uppercase;
  font-size: var(--font-size-sm);
  letter-spacing: 0.1em;
  color: var(--color-text);
}

.dp-filter-group__toggle {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  transition: transform var(--transition-fast);
  line-height: 1;
}

.dp-filter-group.collapsed .dp-filter-group__toggle {
  transform: rotate(-90deg);
}

.dp-filter-group__body {
  overflow: hidden;
  max-height: 1000px;
  transition: max-height var(--transition-normal);
}

.dp-filter-group.collapsed .dp-filter-group__body {
  max-height: 0;
}

/* ===== Checkbox Filter Options ===== */
.dp-filter-option {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) 0;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.dp-filter-option:hover {
  color: var(--color-accent);
}

.dp-filter-option input[type="checkbox"] {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  accent-color: var(--color-accent);
  cursor: pointer;
}

.dp-filter-option__label {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  flex: 1;
  line-height: 1.4;
}

.dp-filter-option__count {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  margin-inline-start: var(--spacing-xs);
}

.dp-filter-option.checked .dp-filter-option__label {
  font-weight: 600;
  color: var(--color-text);
}

/* ===== Color Swatch Filter ===== */
.dp-filter-colors {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
}

.dp-filter-color {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}

.dp-filter-color__swatch {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 2px solid transparent;
  outline: 1px solid var(--color-border);
  outline-offset: 2px;
  transition: outline-color var(--transition-fast), transform var(--transition-fast);
}

.dp-filter-color.active .dp-filter-color__swatch,
.dp-filter-color:hover .dp-filter-color__swatch {
  outline-color: var(--color-text);
  transform: scale(1.1);
}

.dp-filter-color__name {
  font-size: 10px;
  color: var(--color-text-light);
  text-align: center;
  max-width: 40px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ===== Size Filter ===== */
.dp-filter-sizes {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) 0;
}

.dp-filter-size {
  min-width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--color-border);
  padding: 0 var(--spacing-sm);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-body);
  background: var(--color-background);
  user-select: none;
}

.dp-filter-size:hover {
  border-color: var(--color-text);
}

.dp-filter-size.active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.dp-filter-size.unavailable {
  opacity: 0.35;
  cursor: not-allowed;
  text-decoration: line-through;
}

/* ===== Price Range Filter ===== */
.dp-filter-price {
  padding: 20px 20px 20px 13px;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.dp-filter-price__range-container {
  padding: 20px 20px 20px 13px;
}

.dp-filter-price__inputs {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.dp-filter-price__input-wrap {
  position: relative;
  display: flex;
  flex: 1;
}

.dp-filter-price__currency {
  position: absolute;
  left: 11px;
  top: 50%;
  font-size: var(--font-size-sm);
  transform: translateY(-50%);
  font-family: var(--font-body);
  color: var(--color-text-light);
}

.dp-filter-price__input {
  appearance: none;
  border: 1px solid var(--color-border);
  height: 45px;
  width: 100%;
  box-sizing: border-box;
  outline: none;
  padding-left: 20px;
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  line-height: 30px;
  letter-spacing: 0.01em;
  -moz-appearance: textfield;
  color: var(--color-text);
}

.dp-filter-price__input:focus {
  border-color: var(--color-accent);
}

.dp-filter-price__separator {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  flex-shrink: 0;
}

/* rc-slider port */
.dp-filter-price__slider {
  position: relative;
  width: 100%;
  height: 14px;
  padding: 5px 0;
  border-radius: 6px;
  box-sizing: border-box;
}

.dp-filter-price__slider-rail {
  position: absolute;
  width: 100%;
  height: 4px;
  background: var(--color-border);
  border-radius: 6px;
  top: 50%;
  transform: translateY(-50%);
}

.dp-filter-price__slider-track {
  position: absolute;
  height: 4px;
  background: var(--color-accent);
  border-radius: 6px;
  top: 50%;
  transform: translateY(-50%);
}

.dp-filter-price__slider-handle {
  position: absolute;
  width: 14px;
  height: 14px;
  margin-top: -5px;
  background: var(--color-accent);
  border: 2px solid #ffffff;
  border-radius: 50%;
  cursor: grab;
  box-shadow: var(--shadow-sm);
  touch-action: pan-x;
}

.dp-filter-price__slider-handle:active {
  cursor: grabbing;
}

/* ===== Designer / Brand Filter (alphabetical list) ===== */
.dp-filter-designers {
  display: flex;
  flex-direction: column;
}

.dp-filter-designer-letter {
  padding-bottom: 40px;
}

.dp-filter-designer-letter__heading {
  font-weight: 600;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
}

.dp-filter-designer-section {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.dp-filter-designer-list-column {
  display: flex;
  flex-direction: column;
  margin-bottom: 30px;
}

/* ===== Show More ===== */
.dp-filter-show-more {
  background: none;
  border: none;
  font-size: var(--font-size-sm);
  color: var(--color-accent);
  text-decoration: underline;
  cursor: pointer;
  padding: var(--spacing-xs) 0;
  font-family: var(--font-body);
  margin-top: var(--spacing-xs);
  display: inline-block;
}

/* ===== Rating Filter ===== */
.dp-filter-ratings {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
}

.dp-filter-rating-option {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
}

.dp-filter-rating-stars {
  display: flex;
  gap: 2px;
  color: var(--color-accent);
  font-size: var(--font-size-sm);
  direction: ltr;
}

.dp-filter-rating-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

/* ===== Mobile Filters Overlay ===== */
.dp-filters-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 320px;
  max-width: 100vw;
  height: 100vh;
  background: #ffffff;
  z-index: var(--z-modal);
  display: flex;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform var(--transition-normal);
  box-shadow: var(--shadow-lg);
  overflow-y: auto;
}

.dp-filters-drawer.open {
  transform: translateX(0);
}

.dp-filters-drawer__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
  position: sticky;
  top: 0;
  background: #ffffff;
  z-index: 1;
}

.dp-filters-drawer__title {
  font-weight: 600;
  font-size: var(--font-size-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.dp-filters-drawer__close {
  background: none;
  border: none;
  cursor: pointer;
  font-size: var(--font-size-xl);
  color: var(--color-text);
  display: flex;
  align-items: center;
}

.dp-filters-drawer__body {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-lg);
}

.dp-filters-drawer__footer {
  padding: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  flex-shrink: 0;
  display: flex;
  gap: var(--spacing-sm);
}

.dp-filters-drawer__apply {
  flex: 1;
  background: var(--color-primary);
  color: #ffffff;
  border: none;
  height: 44px;
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.dp-filters-drawer__apply:hover {
  background: var(--color-accent);
  color: var(--color-primary);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .dp-filters {
    border-right: none;
    padding-right: 0;
  }

  .dp-filter-price {
    padding: 20px 20px 20px 13px;
  }
}

@media (max-width: 768px) {
  .dp-filter-designer-letter {
    padding-bottom: 40px;
  }

  .dp-filter-designer-letter__heading {
    padding-right: 0;
  }

  .dp-filter-designer-section {
    flex-direction: column;
  }

  .dp-filter-designer-list-column {
    display: flex;
    flex-direction: column;
    margin-bottom: 30px;
  }
}