/* ==========================================================================
   Phone Exchange – Filter Sidebar & Mobile Filter Sheet
   Matches React Products.tsx FilterSection component
   ========================================================================== */

/* --------------------------------------------------------------------------
   Filter Sidebar Sections
   React: space-y-6 → gap between filter groups
   -------------------------------------------------------------------------- */
.pe-filters {
  display: flex;
  flex-direction: column;
  gap: 1.5rem; /* space-y-6 */
}

.pe-filter-section__title {
  font-size: 0.75rem; /* text-xs */
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em; /* tracking-wider */
  color: hsl(var(--muted-foreground));
  margin-bottom: 0.5rem; /* mb-2 */
  font-family: var(--font-body);
}

.pe-filter-section__options {
  display: flex;
  flex-direction: column;
  gap: 0.375rem; /* space-y-1.5 */
}


/* --------------------------------------------------------------------------
   Checkbox Filters
   -------------------------------------------------------------------------- */
.pe-filter-checkbox {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--pe-foreground);
  transition: color var(--pe-transition-fast);
  user-select: none;
}

.pe-filter-checkbox:hover {
  color: var(--pe-accent);
}

.pe-filter-checkbox input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 1rem;
  height: 1rem;
  border: 1.5px solid var(--pe-border);
  border-radius: 3px;
  background: var(--pe-card);
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
  transition: all var(--pe-transition-fast);
}

.pe-filter-checkbox input[type="checkbox"]:checked {
  background: var(--pe-accent);
  border-color: var(--pe-accent);
}

.pe-filter-checkbox input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 0.5px;
  width: 5px;
  height: 9px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.pe-filter-checkbox input[type="checkbox"]:focus-visible {
  outline: 2px solid var(--pe-accent);
  outline-offset: 2px;
}

.pe-filter-checkbox__count {
  margin-left: auto;
  font-size: 0.6875rem;
  color: hsl(var(--muted-foreground));
  opacity: 0.7;
}


/* --------------------------------------------------------------------------
   Radio-like Checkboxes (exclusive toggle)
   -------------------------------------------------------------------------- */
.pe-filter-radio {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--pe-foreground);
  transition: color var(--pe-transition-fast);
  user-select: none;
}

.pe-filter-radio:hover {
  color: var(--pe-accent);
}

.pe-filter-radio input[type="checkbox"] {
  appearance: none;
  -webkit-appearance: none;
  width: 1rem;
  height: 1rem;
  border: 1.5px solid var(--pe-border);
  border-radius: 50%;
  background: var(--pe-card);
  cursor: pointer;
  position: relative;
  flex-shrink: 0;
  transition: all var(--pe-transition-fast);
}

.pe-filter-radio input[type="checkbox"]:checked {
  border-color: var(--pe-accent);
  background: var(--pe-card);
}

.pe-filter-radio input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--pe-accent);
}


/* --------------------------------------------------------------------------
   Price Range Dual Slider
   -------------------------------------------------------------------------- */
.pe-price-range {
  padding-top: 0.25rem;
}

.pe-price-range__slider-wrap {
  position: relative;
  height: 2rem;
  margin-bottom: 0.25rem;
}

.pe-price-range__track {
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--pe-border);
  border-radius: 2px;
  transform: translateY(-50%);
}

.pe-price-range__fill {
  position: absolute;
  top: 50%;
  height: 4px;
  background: var(--pe-accent);
  border-radius: 2px;
  transform: translateY(-50%);
  pointer-events: none;
}

.pe-price-range__input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  appearance: none;
  -webkit-appearance: none;
  background: transparent;
  pointer-events: none;
  margin: 0;
  padding: 0;
}

.pe-price-range__input::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--pe-accent);
  border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
  cursor: pointer;
  pointer-events: all;
  position: relative;
  z-index: 2;
}

.pe-price-range__input::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--pe-accent);
  border: 2px solid #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
  cursor: pointer;
  pointer-events: all;
}

.pe-price-range__labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: hsl(var(--muted-foreground));
  margin-top: 0.25rem;
}


/* --------------------------------------------------------------------------
   Clear All Filters Link
   -------------------------------------------------------------------------- */
.pe-filters__clear {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  color: var(--pe-accent);
  font-size: 0.8125rem;
  font-weight: 500;
  text-decoration: none;
  transition: opacity var(--pe-transition-fast);
  padding-top: 0.5rem;
}

.pe-filters__clear:hover {
  opacity: 0.8;
  color: var(--pe-accent);
}


/* --------------------------------------------------------------------------
   Mobile Filter Sheet
   React: fixed inset-0 z-50 md:hidden
   -------------------------------------------------------------------------- */
.pe-mobile-filters {
  display: none; /* Shown via JS */
  position: fixed;
  inset: 0;
  z-index: 1050;
}

.pe-mobile-filters.is-open {
  display: flex;
  flex-direction: column;
}

@media (min-width: 768px) {
  .pe-mobile-filters {
    display: none !important;
  }
}

/* Backdrop overlay */
.pe-mobile-filters__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
}

/* Sheet panel – slides up from bottom */
.pe-mobile-filters__sheet {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  max-height: 85vh;
  background: var(--pe-card);
  border-radius: 1rem 1rem 0 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  z-index: 1;
  animation: pe-slide-up-sheet 0.3s ease-out;
}

@keyframes pe-slide-up-sheet {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0);
  }
}

/* Sheet header */
.pe-mobile-filters__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--pe-border);
  position: sticky;
  top: 0;
  background: var(--pe-card);
  z-index: 2;
}

.pe-mobile-filters__title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  margin: 0;
}

.pe-mobile-filters__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--pe-foreground);
  border-radius: var(--pe-radius-sm);
  transition: background var(--pe-transition-fast);
}

.pe-mobile-filters__close:hover {
  background: var(--pe-secondary);
}

/* Sheet body */
.pe-mobile-filters__body {
  padding: 1.25rem;
}

/* Sort section in mobile sheet */
.pe-mobile-filters__sort {
  margin-bottom: 1.5rem;
}

.pe-mobile-filters__sort select {
  width: 100%;
  font-size: 0.875rem;
  font-family: var(--font-body);
  font-weight: 500;
  background-color: var(--pe-card);
  border: 1px solid var(--pe-border);
  border-radius: 0.5rem;
  padding: 0.625rem 0.875rem;
  color: var(--pe-foreground);
  cursor: pointer;
}

/* Filter chips (mobile) – pill-shaped toggle buttons */
.pe-filter-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.pe-filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.375rem 0.75rem;
  border-radius: 9999px;
  border: 1px solid var(--pe-border);
  background: var(--pe-card);
  color: var(--pe-foreground);
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--pe-transition-fast);
  user-select: none;
}

.pe-filter-chip:hover {
  border-color: var(--pe-accent);
}

.pe-filter-chip.is-active {
  background: var(--pe-accent);
  color: #fff;
  border-color: var(--pe-accent);
}

.pe-filter-chip input {
  display: none; /* Hidden, chip acts as visual label */
}

/* Sheet footer */
.pe-mobile-filters__footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--pe-border);
  display: flex;
  gap: 0.75rem;
  position: sticky;
  bottom: 0;
  background: var(--pe-card);
  z-index: 2;
}

.pe-mobile-filters__apply {
  flex: 1;
  padding: 0.75rem 1rem;
  background: var(--pe-primary);
  color: var(--pe-primary-foreground);
  border: none;
  border-radius: var(--pe-radius-md);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--pe-transition-fast);
}

.pe-mobile-filters__apply:hover {
  background: hsl(0, 0%, 20%);
}

.pe-mobile-filters__clear-btn {
  padding: 0.75rem 1rem;
  background: none;
  color: var(--pe-accent);
  border: 1px solid var(--pe-border);
  border-radius: var(--pe-radius-md);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--pe-transition-fast);
}

.pe-mobile-filters__clear-btn:hover {
  border-color: var(--pe-accent);
}