/* ========================================
   ADVANCED FILTERING STYLES
   Burgundy + Gold themed filters
   ======================================== */

/* Filter Sidebar */
.filter-sidebar {
    background: var(--pp-burgundy-dark);
    border: 1px solid var(--pp-gray-dark);
    border-radius: var(--pp-radius-lg);
    padding: 1.5rem;
    position: sticky;
    top: 1rem;
}

.filter-sidebar__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--pp-gray-dark);
}

.filter-sidebar__title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--pp-gold);
    margin: 0;
}

.filter-section {
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--pp-gray-dark);
}

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

.filter-section__title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--pp-white);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Price Range Slider */
.price-range {
    padding: 0.5rem 0;
}

.price-inputs {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-bottom: 1rem;
}

.price-input {
    flex: 1;
}

.price-input input[type="range"] {
    width: 100%;
    height: 4px;
    background: var(--pp-gray-dark);
    border-radius: 2px;
    outline: none;
    -webkit-appearance: none;
}

.price-input input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--pp-gold);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s;
}

.price-input input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.price-input input[type="range"]::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--pp-gold);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    transition: transform 0.2s;
}

.price-input input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.2);
}

.price-values {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    color: var(--pp-gray);
}

.price-value {
    font-weight: 600;
    color: var(--pp-gold);
}

/* Feature Checkboxes */
.filter-option {
    display: flex;
    align-items: center;
    padding: 0.5rem 0;
    cursor: pointer;
    transition: opacity 0.2s;
}

.filter-option:hover {
    opacity: 0.8;
}

.filter-option input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-right: 0.75rem;
    cursor: pointer;
    accent-color: var(--pp-gold);
}

.filter-option__label {
    flex: 1;
    font-size: 0.875rem;
    color: var(--pp-white);
    cursor: pointer;
}

.filter-option__count {
    font-size: 0.75rem;
    color: var(--pp-gray);
    margin-left: 0.5rem;
}

/* Radio buttons for stock */
.filter-radio {
    display: flex;
    align-items: center;
    padding: 0.5rem 0;
    cursor: pointer;
}

.filter-radio input[type="radio"] {
    width: 16px;
    height: 16px;
    margin-right: 0.75rem;
    cursor: pointer;
    accent-color: var(--pp-gold);
}

.filter-radio__label {
    font-size: 0.875rem;
    color: var(--pp-white);
    cursor: pointer;
}

/* Active Filters Pills */
.active-filters {
    margin-bottom: 1.5rem;
}

.active-filters .badge {
    background: var(--pp-burgundy);
    border: 1px solid var(--pp-gold);
    color: var(--pp-white);
    padding: 0.5rem 0.75rem;
    font-weight: 500;
}

.active-filters .btn-close-white {
    opacity: 0.7;
    transition: opacity 0.2s;
}

.active-filters .btn-close-white:hover {
    opacity: 1;
}

/* Clear Filters Button */
.btn-clear-filters {
    font-size: 0.875rem;
    color: var(--pp-gray);
    text-decoration: none;
    transition: color 0.2s;
}

.btn-clear-filters:hover {
    color: var(--pp-gold);
    text-decoration: underline;
}

/* Sort Dropdown */
.sort-dropdown {
    background: var(--pp-charcoal-light);
    border: 1px solid var(--pp-gray-dark);
    color: var(--pp-white);
    padding: 0.5rem 1rem;
    border-radius: var(--pp-radius-md);
    font-size: 0.875rem;
    cursor: pointer;
    transition: border-color 0.2s;
}

.sort-dropdown:focus {
    outline: none;
    border-color: var(--pp-gold);
    box-shadow: 0 0 0 3px rgba(245, 166, 35, 0.15);
}

/* Mobile Filter Toggle */
.filter-toggle {
    display: none;
    width: 100%;
    margin-bottom: 1rem;
}

@media (max-width: 991px) {
    .filter-toggle {
        display: block;
    }

    .filter-sidebar {
        position: fixed;
        top: 0;
        left: -100%;
        height: 100vh;
        width: 320px;
        max-width: 90%;
        z-index: 1050;
        overflow-y: auto;
        transition: left 0.3s;
        border-radius: 0;
    }

    .filter-sidebar.open {
        left: 0;
    }

    .filter-backdrop {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1040;
    }

    .filter-backdrop.show {
        display: block;
    }
}

/* Product Grid Loading State */
.products-loading {
    opacity: 0.5;
    pointer-events: none;
}

/* Empty State */
.filter-empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
}

.filter-empty-state__icon {
    font-size: 3rem;
    color: var(--pp-gray);
    opacity: 0.5;
    margin-bottom: 1rem;
}

.filter-empty-state__title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--pp-white);
    margin-bottom: 0.5rem;
}

.filter-empty-state__text {
    color: var(--pp-gray);
    margin-bottom: 1.5rem;
}