/**
 * Amazon Style Theme — Advanced Filters (v1.9.0)
 * Price slider, brand filter, attribute filters, mobile drawer
 */

/* ========== FILTER SECTIONS ========== */

.amazon-filter-section {
  padding: 12px 0;
  border-bottom: 1px solid var(--amazon-border-color, #ddd);
}

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

.amazon-filter-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  color: var(--amazon-text, #0F1111);
  margin: 0;
  padding: 0;
  user-select: none;
}

.amazon-filter-chevron {
  font-size: 18px;
  font-weight: 400;
  transition: transform 0.25s ease;
  transform: rotate(90deg);
}

.amazon-filter-section.collapsed .amazon-filter-chevron {
  transform: rotate(0deg);
}

.amazon-filter-body {
  padding-top: 8px;
  max-height: 500px;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.amazon-filter-section.collapsed .amazon-filter-body {
  max-height: 0;
  padding-top: 0;
  overflow: hidden;
}

.amazon-filter-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.amazon-filter-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  font-size: 13px;
  color: var(--amazon-text, #0F1111);
  cursor: pointer;
  text-decoration: none;
}

.amazon-filter-option:hover {
  color: var(--amazon-link, #007185);
}

.amazon-filter-checkbox {
  cursor: pointer;
}

.amazon-filter-checkbox input[type="checkbox"] {
  margin: 0;
  accent-color: var(--amazon-accent, #FF9900);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.amazon-filter-count {
  font-size: 11px;
  color: var(--amazon-text-secondary, #565959);
  margin-left: auto;
}

.amazon-filter-back {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  color: var(--amazon-link, #007185);
  text-decoration: none;
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--amazon-border-color, #ddd);
}

.amazon-filter-back:hover {
  text-decoration: underline;
}

/* ========== PRICE RANGE SLIDER ========== */

.amazon-price-slider {
  padding: 4px 0;
}

.amazon-price-slider-track {
  position: relative;
  height: 4px;
  background: var(--amazon-border-color, #ddd);
  border-radius: 2px;
  margin: 20px 0 16px;
}

.amazon-price-slider-range {
  position: absolute;
  height: 100%;
  background: var(--amazon-accent, #FF9900);
  border-radius: 2px;
}

.amazon-price-slider-input {
  position: absolute;
  top: -8px;
  width: 100%;
  height: 20px;
  -webkit-appearance: none;
  appearance: none;
  background: transparent;
  pointer-events: none;
  margin: 0;
}

.amazon-price-slider-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--amazon-accent, #FF9900);
  border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.3);
  cursor: pointer;
  pointer-events: auto;
}

.amazon-price-slider-input::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--amazon-accent, #FF9900);
  border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.3);
  cursor: pointer;
  pointer-events: auto;
}

.amazon-price-inputs {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.amazon-price-input-group {
  display: flex;
  align-items: center;
  border: 1px solid var(--amazon-border-color, #ddd);
  border-radius: 4px;
  padding: 0 6px;
  background: #fff;
  flex: 1;
}

.amazon-price-input-group span {
  font-size: 13px;
  color: var(--amazon-text-secondary, #565959);
}

.amazon-price-input-group input {
  border: none;
  outline: none;
  width: 100%;
  padding: 6px 4px;
  font-size: 13px;
  background: transparent;
}

.amazon-price-input-group input::-webkit-outer-spin-button,
.amazon-price-input-group input::-webkit-inner-spin-button {
  -webkit-appearance: none;
}

.amazon-price-separator {
  color: var(--amazon-text-secondary, #565959);
  flex-shrink: 0;
}

#price-go {
  padding: 6px 12px;
  font-size: 12px;
  flex-shrink: 0;
}

/* ========== BRAND FILTER ========== */

.amazon-filter-search {
  width: 100%;
  padding: 6px 10px;
  border: 1px solid var(--amazon-border-color, #ddd);
  border-radius: 4px;
  font-size: 13px;
  margin-bottom: 8px;
  outline: none;
}

.amazon-filter-search:focus {
  border-color: var(--amazon-accent, #FF9900);
  box-shadow: 0 0 0 2px rgba(255,153,0,0.2);
}

.amazon-filter-show-more {
  display: block;
  width: 100%;
  background: none;
  border: none;
  padding: 6px 0;
  font-size: 12px;
  color: var(--amazon-link, #007185);
  cursor: pointer;
  text-align: left;
}

.amazon-filter-show-more:hover {
  text-decoration: underline;
}

/* ========== STAR RATINGS ========== */

.amazon-filter-stars {
  display: inline-flex;
  gap: 1px;
}

.amazon-filter-star {
  fill: var(--amazon-border-color, #ddd);
  stroke: none;
}

.amazon-filter-star.filled {
  fill: var(--amazon-star, #DE7921);
}

/* ========== ACTIVE FILTER CHIPS ========== */

.amazon-active-filters {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 0;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--amazon-border-color, #ddd);
  max-width: 100%;
  overflow: hidden;
}

.amazon-active-filters-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.amazon-active-filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 8px;
  background: var(--amazon-bg-body, #E3E6E6);
  border: 1px solid var(--amazon-border-color, #ddd);
  border-radius: 4px;
  font-size: 12px;
  color: var(--amazon-text, #0F1111);
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.amazon-active-filter-remove {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0 2px;
  font-size: 16px;
  line-height: 1;
  color: var(--amazon-text-secondary, #565959);
}

.amazon-active-filter-remove:hover {
  color: var(--amazon-danger, #B12704);
}

.amazon-active-filters-clear {
  background: none;
  border: none;
  color: var(--amazon-link, #007185);
  font-size: 12px;
  cursor: pointer;
  padding: 4px 0;
  margin-left: auto;
}

.amazon-active-filters-clear:hover {
  text-decoration: underline;
}

/* ========== MOBILE FILTER DRAWER ========== */

.amazon-filter-drawer-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: calc(var(--amazon-z-modal-backdrop, 500) + 100);
}

.amazon-filter-drawer-overlay.open {
  display: block;
}

.amazon-filter-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 85vw;
  max-width: 320px;
  height: 100%;
  background: var(--amazon-bg-card, #fff);
  z-index: calc(var(--amazon-z-modal, 600) + 100);
  display: flex;
  flex-direction: column;
  transform: translateX(-100%);
  transition: transform 0.3s ease;
  box-shadow: 4px 0 16px rgba(0,0,0,0.15);
}

.amazon-filter-drawer.open {
  transform: translateX(0);
}

.amazon-filter-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px;
  border-bottom: 1px solid var(--amazon-border-color, #ddd);
}

.amazon-filter-drawer-header h3 {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
}

.amazon-filter-drawer-close {
  background: none;
  border: none;
  font-size: 28px;
  cursor: pointer;
  color: var(--amazon-text-secondary, #565959);
  line-height: 1;
  padding: 0;
}

.amazon-filter-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  -webkit-overflow-scrolling: touch;
}

.amazon-filter-drawer-footer {
  display: flex;
  gap: 12px;
  padding: 16px;
  border-top: 1px solid var(--amazon-border-color, #ddd);
  background: var(--amazon-bg-body, #f5f5f5);
}

.amazon-filter-drawer-footer button {
  flex: 1;
}

/* ========== LOADING OVERLAY ========== */

.amazon-filter-loading {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255,255,255,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.amazon-filter-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--amazon-border-color, #ddd);
  border-top-color: var(--amazon-accent, #FF9900);
  border-radius: 50%;
  animation: filter-spin 0.7s linear infinite;
}

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

/* ========== RESPONSIVE ========== */

@media (max-width: 991.98px) {
  .amazon-category-sidebar.amazon-hide-mobile {
    display: none !important;
  }

  .amazon-mobile-filter-toggle {
    display: flex !important;
  }
}

@media (min-width: 992px) {
  .amazon-filter-drawer,
  .amazon-filter-drawer-overlay,
  .amazon-mobile-filter-toggle {
    display: none !important;
  }
}