/* 移动端专用样式 */
:root {
    --mobile-header-height: 60px;
    --mobile-footer-height: 70px;
    --mobile-category-width: 120px; /* 加宽侧边栏，能放下5个汉字 */
    --mobile-spacing: 16px;
    --mobile-border-radius: 12px;
    --mobile-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
    --mobile-primary: #2563eb;
    --mobile-secondary: #64748b;
    --mobile-accent: #06b6d4;
    --mobile-background: #f8fafc;
    --mobile-surface: #ffffff;
    --mobile-text: #1e293b;
    --mobile-text-light: #64748b;
    --mobile-border: #e2e8f0;
}

/* 重置移动端基础样式 */
.mobile-layout {
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--mobile-background);
    overflow-x: hidden;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

/* 移动端头部 */
.mobile-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--mobile-header-height);
    background: var(--mobile-surface);
    border-bottom: 1px solid var(--mobile-border);
    z-index: 1000;
    box-shadow: var(--mobile-shadow);
}

.mobile-header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 var(--mobile-spacing);
}

.mobile-logo h1 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--mobile-primary);
    margin: 0;
}

.mobile-nav-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--mobile-background);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mobile-nav-toggle:active {
    transform: scale(0.95);
    background: var(--mobile-border);
}

.mobile-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--mobile-surface);
    border-bottom: 1px solid var(--mobile-border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-nav.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

.mobile-nav ul {
    list-style: none;
    margin: 0;
    padding: var(--mobile-spacing) 0;
}

.mobile-nav li {
    border-bottom: 1px solid var(--mobile-border);
}

.mobile-nav li:last-child {
    border-bottom: none;
}

.mobile-nav a {
    display: block;
    padding: var(--mobile-spacing);
    color: var(--mobile-text);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.mobile-nav a.active,
.mobile-nav a:active {
    background: var(--mobile-background);
    color: var(--mobile-primary);
}

/* 主要内容区域 */
.mobile-main {
    display: flex;
    height: 100vh;
    padding-top: var(--mobile-header-height);
    /* 移除底部导航栏的padding，因为简化版不需要 */
}

/* 左侧分类导航 */
.mobile-categories {
    width: var(--mobile-category-width);
    background: var(--mobile-surface);
    border-right: 1px solid var(--mobile-border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    /* 移除所有折叠相关的样式 */
}

/* 移除折叠状态样式 */

.categories-header {
    padding: var(--mobile-spacing);
    border-bottom: 1px solid var(--mobile-border);
    display: flex;
    align-items: center;
    justify-content: center; /* 居中显示标题 */
    min-height: 50px;
}

.categories-header h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--mobile-text);
    margin: 0;
    text-align: center; /* 文字居中 */
}

/* 移除折叠按钮 */

.categories-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px 0;
    display: flex !important; /* 强制显示为flex布局 */
    flex-direction: column !important; /* 确保分类按钮垂直排列 */
    gap: 2px; /* 分类按钮之间的间距 */
    min-height: 200px; /* 确保有足够高度 */
}

.category-item {
    width: 100%;
    display: flex !important;
    align-items: center;
    justify-content: center; /* 居中对齐 */
    padding: 12px 8px; /* 减少左右padding，保证文字居中 */
    background: none;
    border: none;
    text-align: center; /* 文字居中 */
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 6px;
    margin: 1px 8px;
    min-height: 44px;
    flex-shrink: 0;
    box-sizing: border-box;
    color: var(--mobile-text);
    /* 移除垂直排列，改为水平居中 */
}

.category-item:hover {
    background: var(--mobile-background);
}

.category-item.active {
    background: var(--mobile-primary) !important;
    color: white !important;
    overflow: hidden;
    border-radius: 4px;
    margin: 2px 8px;
    box-shadow: none;
    position: relative;
    z-index: 1;
    width: calc(100% - 16px);
    box-sizing: border-box;
    padding: 12px 4px;
    white-space: nowrap;
    text-overflow: ellipsis;
}

.category-item.active span {
    color: white !important;
    visibility: visible !important;
    opacity: 1 !important;
    display: block !important;
}

/* 隐藏分类图标 */
.category-item i {
    display: none !important;
}

.category-item span {
    font-size: 0.8rem;
    font-weight: 500;
    line-height: 1.2;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    width: 100%;
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    color: inherit;
    word-break: keep-all;
    white-space: nowrap;
    max-width: 100%;
    overflow: hidden;
    position: relative;
    z-index: 10;
    pointer-events: auto;
}

/* 移除所有折叠相关的样式 */

/* 右侧产品展示区 */
.mobile-products {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--mobile-background);
    overflow: hidden;
}

.products-header {
    background: var(--mobile-surface);
    padding: var(--mobile-spacing);
    border-bottom: 1px solid var(--mobile-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.current-category-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--mobile-text);
    margin: 0;
}

.products-meta {
    display: flex;
    align-items: center;
    gap: 12px;
}

.products-count {
    font-size: 0.875rem;
    color: var(--mobile-text-light);
    background: var(--mobile-background);
    padding: 4px 8px;
    border-radius: 6px;
}

.view-toggle {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--mobile-background);
    border: 1px solid var(--mobile-border);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.view-toggle:active {
    transform: scale(0.95);
}

.products-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--mobile-spacing);
    position: relative;
}

/* 产品网格 */
.mobile-product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 12px;
    padding-bottom: 20px;
}

.mobile-product-grid.list-view {
    grid-template-columns: 1fr;
    gap: 8px;
}

/* 移动端产品卡片 */
.mobile-product-card {
    background: var(--mobile-surface);
    border-radius: var(--mobile-border-radius);
    overflow: hidden;
    border: 1px solid var(--mobile-border);
    transition: all 0.3s ease;
    cursor: pointer;
}

.mobile-product-card:active {
    transform: scale(0.98);
    box-shadow: var(--mobile-shadow);
}

.mobile-product-card.list-view {
    display: flex;
    align-items: center;
    padding: 12px;
    gap: 12px;
}

.mobile-product-image {
    width: 100%;
    aspect-ratio: 1;
    background: var(--mobile-background);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.mobile-product-card.list-view .mobile-product-image {
    width: 60px;
    height: 60px;
    flex-shrink: 0;
    border-radius: 8px;
}

.mobile-product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    padding: 8px;
}

.mobile-product-card.list-view .mobile-product-image img {
    padding: 4px;
}

.mobile-product-info {
    padding: 12px;
}

.mobile-product-card.list-view .mobile-product-info {
    padding: 0;
    flex: 1;
}

.mobile-product-name {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--mobile-text);
    margin: 0 0 4px 0;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.mobile-product-card.list-view .mobile-product-name {
    -webkit-line-clamp: 1;
    margin-bottom: 2px;
}

.mobile-product-desc {
    font-size: 0.75rem;
    color: var(--mobile-text-light);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin: 0;
}

.mobile-product-card.list-view .mobile-product-desc {
    -webkit-line-clamp: 1;
}

/* 加载指示器 */
.loading-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.loading-spinner i {
    color: var(--mobile-primary);
}

.loading-spinner p {
    font-size: 0.875rem;
    color: var(--mobile-text-light);
    margin: 0;
}

/* 空状态 */
.empty-state {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    max-width: 200px;
}

.empty-icon {
    margin-bottom: 16px;
}

.empty-icon i {
    color: var(--mobile-text-light);
}

.empty-state h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--mobile-text);
    margin: 0 0 8px 0;
}

.empty-state p {
    font-size: 0.875rem;
    color: var(--mobile-text-light);
    line-height: 1.4;
    margin: 0;
}

/* 底部导航栏 */
.mobile-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--mobile-footer-height);
    background: var(--mobile-surface);
    border-top: 1px solid var(--mobile-border);
    z-index: 1000;
}

.mobile-footer-nav {
    display: flex;
    height: 100%;
}

.footer-nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    color: var(--mobile-text-light);
    transition: all 0.3s ease;
    gap: 4px;
}

.footer-nav-item.active {
    color: var(--mobile-primary);
}

.footer-nav-item i {
    font-size: 1.125rem;
}

.footer-nav-item span {
    font-size: 0.75rem;
    font-weight: 500;
}

/* 产品详情模态框 */
.mobile-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    display: none;
    align-items: flex-end;
}

.mobile-modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--mobile-surface);
    border-radius: var(--mobile-border-radius) var(--mobile-border-radius) 0 0;
    max-height: 80vh;
    overflow: hidden;
    transform: translateY(100%);
    transition: transform 0.3s ease;
    width: 100%;
    position: relative;
}

.mobile-modal.active .modal-content {
    transform: translateY(0);
}

.modal-header {
    padding: var(--mobile-spacing);
    border-bottom: 1px solid var(--mobile-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--mobile-text);
    margin: 0;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--mobile-background);
    border: none;
    border-radius: 6px;
    cursor: pointer;
    color: var(--mobile-text-light);
}

.modal-body {
    padding: var(--mobile-spacing);
    max-height: 60vh;
    overflow-y: auto;
}

.modal-footer {
    padding: var(--mobile-spacing);
    border-top: 1px solid var(--mobile-border);
    display: flex;
    gap: 12px;
}

.modal-footer .btn {
    flex: 1;
    padding: 12px;
    border-radius: 8px;
    text-align: center;
    text-decoration: none;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary {
    background: var(--mobile-background);
    color: var(--mobile-text);
}

.btn-primary {
    background: var(--mobile-primary);
    color: white;
}

/* 响应式调整 */
@media (max-width: 480px) {
    :root {
        --mobile-category-width: 100px; /* 小屏幕上稍微减小 */
        --mobile-spacing: 12px;
    }
    
    .mobile-product-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
        gap: 8px;
    }
    
    .categories-header h3 {
        font-size: 0.75rem;
    }
    
    .category-item span {
        font-size: 0.75rem; /* 小屏幕上字体调小 */
    }
    
    .current-category-title {
        font-size: 1rem;
    }
}

@media (max-width: 360px) {
    :root {
        --mobile-category-width: 90px; /* 最小屏幕进一步减小 */
        --mobile-spacing: 10px;
    }
    
    .mobile-product-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
    
    .category-item span {
        font-size: 0.7rem;
    }
}

/* 触摸优化 */
@media (hover: none) and (pointer: coarse) {
    .mobile-product-card:hover {
        transform: none;
    }
    
    .category-item:hover {
        background: none;
    }
}

/* 强制分类显示修复 */
.mobile-categories .categories-list .category-item {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
    height: auto !important;
    min-height: 44px !important;
    position: relative !important;
}

.mobile-categories .categories-list .category-item span {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    position: static !important;
    z-index: 1 !important;
}

.mobile-categories .categories-list {
    display: flex !important;
    flex-direction: column !important;
    position: relative !important;
}

/* 隐藏桌面端组件 */
.mobile-layout header,
.mobile-layout .page-header,
.mobile-layout .cta,
.mobile-layout footer:not(.mobile-footer) {
    display: none !important;
}

/* 强制分类按钮显示保护 - 防止任何隐藏 */
.mobile-categories .categories-list .category-item {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
    height: auto !important;
    min-height: 44px !important;
    position: relative !important;
    overflow: visible !important;
    clip: auto !important;
    clip-path: none !important;
    -webkit-clip-path: none !important;
    transform: none !important;
    filter: none !important;
    pointer-events: auto !important;
    user-select: auto !important;
    -webkit-user-select: auto !important;
    -moz-user-select: auto !important;
    -ms-user-select: auto !important;
}

.mobile-categories .categories-list .category-item span {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    position: static !important;
    z-index: 10 !important;
    overflow: visible !important;
    clip: auto !important;
    clip-path: none !important;
    -webkit-clip-path: none !important;
    transform: none !important;
    filter: none !important;
    pointer-events: none !important;
    user-select: none !important;
    -webkit-user-select: none !important;
    -moz-user-select: none !important;
    -ms-user-select: none !important;
    font-size: 0.8rem !important;
    font-weight: 500 !important;
    color: inherit !important;
    text-align: center !important;
    white-space: nowrap !important;
    text-overflow: ellipsis !important;
    width: 100% !important;
    max-width: 100% !important;
}

.mobile-categories .categories-list {
    display: flex !important;
    flex-direction: column !important;
    position: relative !important;
    visibility: visible !important;
    opacity: 1 !important;
    overflow: visible !important;
}

/* 防止任何JavaScript导致的隐藏 */
.category-item[style*="display: none"],
.category-item[style*="visibility: hidden"],
.category-item[style*="opacity: 0"] {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.category-item span[style*="display: none"],
.category-item span[style*="visibility: hidden"],
.category-item span[style*="opacity: 0"] {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
}

/* 选中项强制可见保护 */
.category-item.visible-protect {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
}

.category-item.visible-protect span {
    display: block !important;
    visibility: visible !important;
    opacity: 1 !important;
    color: inherit !important;
}