/* =============================================
   FILTERS.CSS — Enhanced Refinement System
   ============================================= */

:root {
  --filter-sidebar-width: 280px;
}

/* --- Filter Groups (Accordions) --- */
.filter-group {
  margin-bottom: var(--space-4);
  border-bottom: 1px solid var(--clr-border);
  padding-bottom: var(--space-4);
}

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

.filter-group-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  transition: color var(--trans-fast);
}

.filter-group-header:hover {
  color: var(--clr-primary);
}

.filter-group-header .chevron {
  font-size: 0.8rem;
  transition: transform var(--trans-fast);
}

.filter-group.collapsed .filter-group-content {
  display: none;
}

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

.filter-group-content {
  padding: 10px 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* --- Filter Item Labels --- */
.filter-checkbox-label, .filter-radio-label {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--clr-text-2);
  transition: color var(--trans-fast);
  position: relative;
}

.filter-checkbox-label:hover, .filter-radio-label:hover {
  color: var(--clr-text);
}

.filter-checkbox-label input, .filter-radio-label input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

/* Custom Checkbox */
.checkbox-custom {
  height: 18px;
  width: 18px;
  background-color: transparent;
  border: 1.5px solid var(--clr-border);
  border-radius: 4px;
  display: inline-block;
  position: relative;
  transition: all var(--trans-fast);
}

.filter-checkbox-label input:checked ~ .checkbox-custom {
  background-color: var(--clr-primary);
  border-color: var(--clr-primary);
}

.checkbox-custom::after {
  content: "";
  position: absolute;
  display: none;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.filter-checkbox-label input:checked ~ .checkbox-custom::after {
  display: block;
}

/* Custom Radio */
.radio-custom {
  height: 18px;
  width: 18px;
  background-color: transparent;
  border: 1.5px solid var(--clr-border);
  border-radius: 50%;
  display: inline-block;
  position: relative;
  transition: all var(--trans-fast);
}

.filter-radio-label input:checked ~ .radio-custom {
  border-color: var(--clr-primary);
}

.radio-custom::after {
  content: "";
  position: absolute;
  display: none;
  top: 4px;
  left: 4px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--clr-primary);
}

.filter-radio-label input:checked ~ .radio-custom::after {
  display: block;
}

.filter-label-text {
  flex: 1;
}

.filter-count {
  font-size: 0.75rem;
  color: var(--clr-text-3);
  background: var(--clr-bg-2);
  padding: 2px 8px;
  border-radius: 10px;
}

/* --- Switch Toggle --- */
.filter-switch-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  cursor: pointer;
  font-size: 0.9rem;
}

.switch-slider {
  position: relative;
  display: inline-block;
  width: 40px;
  height: 20px;
  background-color: var(--clr-border);
  border-radius: 20px;
  transition: background-color var(--trans-fast);
}

.switch-slider::before {
  content: "";
  position: absolute;
  height: 16px;
  width: 16px;
  left: 2px;
  bottom: 2px;
  background-color: white;
  border-radius: 50%;
  transition: transform var(--trans-fast);
}

.filter-switch-label input:checked + .switch-slider {
  background-color: var(--clr-success);
}

.filter-switch-label input:checked + .switch-slider::before {
  transform: translateX(20px);
}

.filter-switch-label input {
  display: none;
}

/* --- Active Filter Chips --- */
.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background: var(--clr-primary-light);
  color: var(--clr-primary);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
}

.chip-remove {
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
  opacity: 0.6;
  transition: opacity var(--trans-fast);
}

.chip-remove:hover {
  opacity: 1;
}

/* --- Refinement Header --- */
.refinement-header {
  margin-bottom: var(--space-8);
  padding: 20px;
  background: var(--clr-bg-2);
  border-radius: var(--radius-lg);
  border: 1px solid var(--clr-border);
}

/* --- Range Input Custom styling --- */
.range-input {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--clr-border);
  border-radius: 2px;
  outline: none;
}

.range-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  background: var(--clr-primary);
  cursor: pointer;
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: var(--shadow-sm);
}

/* --- Filter Drawer (Off-canvas) --- */
.filter-drawer-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  z-index: 2000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--trans-md);
}

.filter-drawer-overlay.active {
  opacity: 1;
  visibility: visible;
}

.filter-drawer {
  position: absolute;
  top: 0;
  right: -400px;
  width: 400px;
  max-width: 90vw;
  height: 100%;
  background: var(--clr-bg-1);
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  transition: right var(--trans-md) var(--ease-out);
}

.filter-drawer-overlay.active .filter-drawer {
  right: 0;
}

.filter-drawer-header {
  padding: 24px;
  border-bottom: 1px solid var(--clr-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.2rem;
}

.filter-drawer-content {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
}

.filter-drawer-footer {
  padding: 24px;
  border-top: 1px solid var(--clr-border);
  background: var(--clr-bg-2);
}

@media (max-width: 480px) {
  .filter-drawer {
    width: 100%;
  }
}