/* Desktop: static sidebar */
@media (min-width: 1024px) {
    .qing-product-filter__mobile-toggle,
    .qing-product-filter__overlay,
    .qing-product-filter__mobile-header {
        display: none !important;
    }
}

/* Mobile Toggle Button */
.qing-product-filter__mobile-toggle {
    display: none;
}

/* Mobile Overlay */
.qing-product-filter__overlay {
    display: none;
}

/* Mobile Header (close button) */
.qing-product-filter__mobile-header {
    display: none;
}

@media (max-width: 1023px) {
    .qing-product-filter__mobile-toggle {
        display: block;
        position: sticky;
        top: 60px;
        z-index: 30;
        background: #fff;
        border-bottom: 1px solid #f3f4f6;
        padding: 0.75rem 0;
    }

    .qing-product-filter__toggle-btn {
        display: inline-flex;
        align-items: center;
        gap: 0.5rem;
        font-size: 0.875rem;
        font-weight: 500;
        color: #0f1d2f;
        background: #f9f9f9;
        border: 1px solid #e5e7eb;
        border-radius: 0.5rem;
        padding: 0.625rem 1rem;
        cursor: pointer;
        transition: border-color 0.2s;
    }

    .qing-product-filter__toggle-btn:hover {
        border-color: #196eca;
    }

    .qing-product-filter__toggle-btn svg {
        width: 16px;
        height: 16px;
        color: #196eca;
    }

    .qing-product-filter__overlay {
        display: block;
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.4);
        z-index: 40;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
    }

    .qing-product-filter__overlay.open {
        opacity: 1;
        pointer-events: auto;
    }

    .qing-product-filter {
        position: fixed;
        top: 0;
        left: 0;
        width: 320px;
        max-width: 90vw;
        height: 100%;
        background: #fff;
        z-index: 50;
        overflow-y: auto;
        padding: 1.5rem;
        transform: translateX(-100%);
        transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .qing-product-filter.open {
        transform: translateX(0);
    }

    .qing-product-filter__mobile-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-bottom: 1.5rem;
    }

    .qing-product-filter__mobile-title {
        font-family: 'Playfair Display', serif;
        font-size: 1.25rem;
        font-weight: 700;
        color: #0f1d2f;
    }

    .qing-product-filter__close-btn {
        width: 2rem;
        height: 2rem;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 50%;
        background: #f9f9f9;
        border: none;
        color: #6b7280;
        cursor: pointer;
        transition: color 0.2s;
    }

    .qing-product-filter__close-btn:hover {
        color: #0f1d2f;
    }

    .qing-product-filter__close-btn svg {
        width: 16px;
        height: 16px;
    }
}

/* Section */
.qing-product-filter__section {
    padding-bottom: 1.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid #f0f0f0;
}

.qing-product-filter__section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.qing-product-filter__section-title {
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: #6b7280;
    margin-bottom: 1.25rem;
}

/* Category List */
.qing-product-filter__cat-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.qing-product-filter__cat-link {
    display: flex;
    align-items: center;
    font-size: 0.875rem;
    padding: 0.625rem 0.75rem;
    color: #4b5563;
    text-decoration: none;
    transition: all 0.3s ease;
}

.qing-product-filter__cat-link:hover {
    color: #0f1d2f;
    background: #f9fafb;
}

.qing-product-filter__cat-link.active {
    color: #0f1d2f;
    font-weight: 600;
    background: #f3f4f6;
}

/* Accordion */
.qing-product-filter__accordion-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    font-size: 0.875rem;
    padding: 0.625rem 0.75rem;
    color: #4b5563;
    cursor: pointer;
    transition: all 0.3s ease;
    background: none;
    border: none;
    text-align: left;
}

.qing-product-filter__accordion-toggle:hover {
    color: #0f1d2f;
    background: #f9fafb;
}

.qing-product-filter__accordion-toggle .arrow {
    font-size: 10px;
    color: #9ca3af;
    transition: transform 0.3s ease;
}

.qing-product-filter__accordion-toggle.open .arrow {
    transform: rotate(180deg);
}

.qing-product-filter__accordion-panel {
    display: none;
    padding-left: 0.5rem;
    padding-bottom: 0.5rem;
    margin-top: 0.25rem;
}

.qing-product-filter__accordion-panel.open {
    display: block;
}

.qing-product-filter__accordion-panel a {
    display: block;
    font-size: 0.75rem;
    color: #9ca3af;
    padding: 0.5rem 0.75rem 0.5rem 1rem;
    text-decoration: none;
    transition: color 0.2s ease;
}

.qing-product-filter__accordion-panel a:hover {
    color: #196eca;
}

/* Color Swatches */
.qing-product-filter__colors {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.qing-product-filter__color-swatch {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid #e5e7eb;
    cursor: pointer;
    position: relative;
    transition: border-color 0.3s ease, transform 0.2s ease;
    padding: 0;
    overflow: hidden;
}

.qing-product-filter__color-swatch:hover {
    transform: scale(1.1);
}

.qing-product-filter__color-swatch.active {
    border-color: #0f1d2f;
    box-shadow: 0 0 0 2px #fff, 0 0 0 4px #0f1d2f;
}

.qing-product-filter__color-selected {
    font-size: 0.75rem;
    color: #6b7280;
    margin-top: 0.75rem;
}

.qing-product-filter__color-selected span {
    color: #196eca;
    font-weight: 500;
}

/* Size Buttons */
.qing-product-filter__sizes {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.qing-product-filter__size-btn {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.625rem 0.75rem;
    border: 1px solid #e5e7eb;
    color: #4b5563;
    background: transparent;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
}

.qing-product-filter__size-btn:hover {
    border-color: #0f1d2f;
    color: #0f1d2f;
}

.qing-product-filter__size-btn.active {
    border-color: #0f1d2f;
    background: #0f1d2f;
    color: #ffffff;
}

/* Clear Button */
.qing-product-filter__clear {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.5rem;
    font-size: 0.8125rem;
    color: #6b7280;
    background: none;
    border: none;
    cursor: pointer;
    transition: color 0.3s ease;
}

.qing-product-filter__clear:hover {
    color: #ef4444;
}