/* 產品分類側欄專用 CSS */

#category-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.category-tile {
    padding: 0.75rem 1.25rem;
    border: 1.5px solid #d8dce0;
    border-radius: 10px;
    background-color: #fff;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    color: #003366;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    transition: all 0.3s ease;
    letter-spacing: 0.3px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.category-tile:hover {
    background-color: #f0f4ff;
    transform: translateX(2px);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
    border-color: #003366;
}

.category-tile.active {
    border-color: #003366;
    background-color: #f4f8ff;
    box-shadow: 0 0 0 2px rgba(0, 51, 102, 0.15);
    font-weight: 700;
}

.category-tile.active::before {
    content: "";
    top: 12px;
    bottom: 12px;
    left: 6px;
    width: 3px;
    position: absolute;
    background-color: #003366;
    border-radius: 4px;
}

.category-arrow {
    transition: transform 0.2s ease;
}
.category-tile.expanded .category-arrow {
    transform: rotate(90deg);
}

.subcategory-list {
    display: none;
    margin-left: 1rem;
    margin-top: 0.2rem;
    padding-left: 1rem;
    border-left: 2px solid #d8dce0;
    gap: 0.25rem;
    flex-direction: column;
}

.subcategory {
    font-size: 0.92rem;
    color: #666;
    cursor: pointer;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    transition: background-color 0.2s, color 0.2s;
}
.subcategory:hover {
    color: #003366;
    background-color: #eef4ff;
}

/* 響應式調整（必要時補充） */
@media (max-width: 576px) {
    .category-tile {
        font-size: 0.97rem;
        padding: 0.65rem 0.9rem;
    }
    #category-buttons {
        gap: 0.7rem;
    }
}