/* Shop & Filter Styles */
.shop-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
    align-items: flex-start;
}

.shop-sidebar {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    position: sticky;
    top: 100px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

.sidebar-header h3 { font-size: 1.25rem; margin: 0; }

.sidebar-close {
    display: none;
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--muted-foreground);
}

.btn-reset {
    width: 100%;
    margin-bottom: 1.5rem;
    background: var(--secondary);
    color: var(--secondary-foreground);
    border: 1px solid var(--border);
    font-weight: 700;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    cursor: pointer;
}

.filter-block { margin-bottom: 2rem; }
.filter-block__title { font-size: 1rem; font-weight: 700; margin-bottom: 1rem; }

#category-filters .radio-group { display: flex; align-items: center; margin-bottom: 0.75rem; }
#category-filters label { margin-left: 0.5rem; cursor: pointer; color: var(--muted-foreground); }
#category-filters input[type="radio"] { cursor: pointer; accent-color: var(--primary); }
#category-filters input[type="radio"]:checked + label {
    color: var(--primary);
    font-weight: 700;
}

.price-input-group {
    display: flex;
    align-items: center;
    margin-bottom: 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 0 0.75rem;
}
.price-input-group:focus-within { border-color: var(--ring); box-shadow: 0 0 0 1px var(--ring); }
.price-prefix { color: var(--muted-foreground); font-weight: 700; }
.price-input { width: 100%; border: none; background: transparent; padding: 0.6rem 0.5rem; }
.price-input:focus { outline: none; }

.filter-select {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
}
.filter-select:focus { outline: none; border-color: var(--ring); box-shadow: 0 0 0 1px var(--ring); }

.btn-filter-toggle {
    display: none; /* Hidden on desktop */
    margin-bottom: 1.5rem;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1999;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.sidebar-overlay.is-open { display: block; opacity: 1; }

/* Responsive Filters */
@media (max-width: 992px) {
    .shop-layout { grid-template-columns: 1fr; }
    .btn-filter-toggle { display: inline-flex; }
    .shop-sidebar {
        position: fixed;
        left: 0; top: 0; height: 100%;
        width: 300px; max-width: 80vw;
        z-index: 2000;
        transform: translateX(-100%);
        transition: transform 0.3s ease-in-out;
        overflow-y: auto;
    }
    .shop-sidebar.is-open { transform: translateX(0); }
    .sidebar-close { display: block; }
}