/* ============================================
   ЛЕВАЯ ПАНЕЛЬ КАТАЛОГА (ОБНОВЛЕННАЯ)
   ============================================ */
.left-sidebar {
    position: fixed;
    left: 0;
    top: 80px;
    width: 280px;
    height: calc(100vh - 80px);
    background: var(--color-white);
    border-right: 1px solid var(--color-gray-300);
    padding: 16px 12px;
    overflow-y: auto;
    z-index: 999;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-md);
}

.left-sidebar.active {
    transform: translateX(0);
}

.sidebar-header {
    display: flex;
    justify-content: flex-end;
    padding-bottom: 12px;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--color-gray-300);
}

.sidebar-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--color-text-light);
    transition: var(--transition);
    padding: 4px 8px;
}

.sidebar-close:hover {
    color: var(--color-accent);
    transform: rotate(90deg);
}

.sidebar-category {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--border-radius-sm);
    text-decoration: none;
    color: var(--color-text-dark);
    transition: var(--transition);
    font-weight: 500;
    cursor: pointer;
    margin-bottom: 4px;
}

.sidebar-category:hover {
    background: var(--color-gray-100);
    transform: translateX(4px);
}

.sidebar-category.active {
    background: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-sm);
}

.sidebar-category-icon {
    font-size: 1.2rem;
}

.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
    display: none;
    backdrop-filter: blur(4px);
}

.sidebar-overlay.active {
    display: block;
}