.grid__col-sizer,
.product-item {
  width: 100%;
  height: auto;
}

.grid__gutter-sizer {
  width: 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
  padding: 0.5rem;
}

.product-item {
  margin-bottom: 0;
  float: none;
}

/* Mobile layout */
@media (max-width: 640px) {
  .grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
    padding: 0.5rem;
  }

  /* Adjust product card for mobile */
  .product-item {
    min-height: auto;
  }

  /* Adjust filter section for mobile */
  .filter-section {
    margin-bottom: 0.5rem;
  }

  .filter-section-header {
    padding: 0.5rem;
  }

  .filter-section-body {
    padding: 0.5rem;
  }
}

/* Tablet layout */
@media (min-width: 641px) and (max-width: 1023px) {
  .grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    padding: 0.75rem;
  }
}

/* Desktop layout */
@media (min-width: 1024px) {
  .grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    padding: 1rem;
  }
}

/* Large desktop layout */
@media (min-width: 1280px) {
  .grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.product-item__image {
  display: block;
  max-width: 100%;
}

.filter-section {
    border: 1px solid #e9ecef;
    border-radius: 0.25rem;
    margin-bottom: 1rem;
  }
  .filter-section-header {
    padding: 0.75rem 1rem;
    background-color: #f8f9fa;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    border-bottom: 1px solid #e9ecef;
  }
  .filter-section-body {
    padding: 1rem;
    transition: all 0.15s ease-out;
    will-change: height;
    overflow: hidden;
  }
  
  .filter-toggle-btn[aria-expanded="true"] .bi-chevron-down {
    transform: rotate(180deg);
  }
  
  .toggle-icon {
    font-size: 0.875rem;
    font-weight: 500;
  }
  
  .bi-chevron-down {
    transition: transform 0.2s ease;
  }
  
  .filters-sidebar {
    padding-right: 1rem;
  }
  @media (max-width: 768px) {
    .filters-sidebar {
      margin-bottom: 1rem;
    }
  }
  .region-option {
    display: flex;
    align-items: center;
    margin-bottom: 0.75rem;
    position: relative;
  }
  
  .region-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
  }
  
  .region-option label {
    padding-left: 28px;
    cursor: pointer;
    font-size: 0.95rem;
    user-select: none;
    position: relative;
    display: block;
    width: 100%;
  }
  
  .region-option label:before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    border: 1.5px solid #ced4da;
    border-radius: 50%;
    background: #fff;
    transition: all 0.2s ease;
  }
  
  .region-option input[type="radio"]:checked + label:before {
    border-color: #6366f1;
  }
  
  .region-option label:after {
    content: '';
    position: absolute;
    left: 4px;
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #6366f1;
    opacity: 0;
    transition: all 0.2s ease;
  }
  
  .region-option input[type="radio"]:checked + label:after {
    opacity: 1;
  }
  
  .region-option:hover label:before {
    border-color: #6366f1;
  }
  
  /* 清除按钮样式优化 */
  .input-group.position-relative {
    display: flex;
    align-items: center;
    position: relative;
    transform: translateZ(0); /* 启用硬件加速 */
  }
  
  .btn-clear {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #aaa;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    padding: 0;
    z-index: 10;
    opacity: 0.7;
    transition: opacity 0.15s;
    will-change: opacity;
  }
  
  .btn-clear:hover {
    opacity: 1;
    color: #666;
  }
  
  .btn-clear i {
    display: none;
  }
  
  #category-search-input, #brand-search-input {
    padding-right: 28px;
  }

  /* Mobile Filter Section */
  @media (max-width: 767.98px) {
    #mobileFilterSection {
        position: relative;
        z-index: 1000;
    }

    #mobileFilterSection .card {
        margin-bottom: 1rem;
        border: 1px solid #dee2e6;
        border-radius: 0.25rem;
    }

    .filters-sidebar {
        margin-bottom: 1rem;
    }

    .filter-section {
        margin-bottom: 0.75rem;
    }

    .filter-section-header {
        padding: 0.75rem;
    }

    .filter-section-body {
        padding: 0.75rem;
    }
  }

  /* 添加折叠动画优化 */
  .collapse {
    transition: height 0.15s ease !important;
    will-change: height;
  }
  
  .collapse.show {
    overflow: visible;
  }
  
  .collapsing {
    transition: height 0.15s ease !important;
    will-change: height;
  }

  /* 搜索框清除按钮容器 */
  .search-input-clear-wrapper {
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
    display: flex;
    align-items: center;
    padding-right: 8px;
    pointer-events: none;
  }
  
  .search-input-clear-wrapper .btn-clear {
    position: static;
    transform: none;
    pointer-events: auto;
  }

  .search-container {
    position: relative;
  }
  
  /* 重置按钮样式优化 */
  #reset-btn {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding: 4px 8px;
    font-size: 0.875rem;
  }

  /* Desktop layout */
  @media (min-width: 768px) {
    .filters-sidebar {
        padding-right: 1rem;
    }
  }