.category-body-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 40px;
    margin-top: 30px;
}
@media (max-width: 992px) {
    .category-body-layout {
        grid-template-columns: 1fr;
    }
}
.category-sidebar-filters {
    display: flex;
    flex-direction: column;
    gap: 30px;
}
.sidebar-filter-section {
    padding-bottom: 0;
}
.sidebar-filter-section h3 {
    font-size: 1.1rem;
    font-weight: 800;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.def-accordion-sidebar .letter-heading {
    font-size: 1.1rem;
    padding: 8px 12px;
    background: #f3f4f6;
    margin-bottom: 5px;
}
.system-sidebar-list {
    display: flex;
    flex-direction: column;
    gap: 5px;
}
.system-sidebar-list .system-item {
    padding: 6px 10px;
    font-size: 0.85rem;
    border-radius: 0;
}
.category-main-content {
    display: flex;
    flex-direction: column;
}
.filter-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
    margin-bottom: 30px;
}
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 20px;
}
.letter-section {
    padding-bottom: 15px;
}
.letter-heading {
    font-family: 'Raleway', sans-serif;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 15px;
    cursor: pointer;
    border-radius: 0;
    transition: var(--transition);
    background: #f9fafb;
}
.letter-heading:hover {
    background: var(--primary-light);
}
.accordion-arrow {
    font-size: 1.1rem;
    transition: transform 0.3s ease;
    color: var(--grey);
}
.accordion-section.active .accordion-arrow {
    transform: rotate(180deg);
}
.accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out, padding 0.3s ease;
    padding: 0 15px;
}
.accordion-section.active .accordion-content {
    max-height: 1000px;
    padding-top: 20px;
    padding-bottom: 10px;
}
.system-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 8px;
}
.system-item {
    padding: 8px 15px;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--grey);
    transition: var(--transition);
    cursor: pointer;
}
.system-item:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateX(5px);
    box-shadow: var(--shadow-sm);
}
.system-item.active {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
    font-weight: 700;
}
@media (max-width: 900px) {
    .category-header h1 {
        font-size: 2.1rem !important;
        line-height: 1.15;
    }
    .filter-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    .system-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}
@media (max-width: 768px) {
    .letter-heading {
        font-size: 1.4rem;
    }
    .system-list {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 600px) {
    .category-header h1 {
        font-size: 1.7rem !important;
    }
    .category-header p {
        font-size: 1rem;
        line-height: 1.6;
    }
}