/* ===== 基础样式重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 颜色系统 */
    --primary-black: #1a1a1a;
    --secondary-black: #2a2a2a;
    --warm-white: #fefefe;
    --cream: #f8f6f3;
    --gold: #d4af37;
    --gold-light: #e8c547;
    --gold-dark: #b8941f;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --text-light: #999999;
    --border-light: #e8e8e8;
    --shadow-light: rgba(0, 0, 0, 0.08);
    --shadow-medium: rgba(0, 0, 0, 0.12);
    --shadow-heavy: rgba(0, 0, 0, 0.24);
    
    /* 字体系统 */
    --font-primary: 'Playfair Display', serif;
    --font-secondary: 'Inter', sans-serif;
    --font-chinese: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    
    /* 间距系统 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* 动画 */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* 移动端间距调整 */
@media (max-width: 768px) {
    :root {
        --spacing-xs: 0.25rem;
        --spacing-sm: 0.75rem;
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        --spacing-xxl: 2.5rem;
    }
    
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .category-tabs {
        gap: var(--spacing-sm);
        padding: 0 var(--spacing-xs);
    }
    
    .product-info {
        padding: var(--spacing-sm);
    }
    
    .cart-item {
        padding: var(--spacing-sm) 0;
    }
    
    .section-header {
        margin-bottom: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-xs: 0.2rem;
        --spacing-sm: 0.5rem;
        --spacing-md: 0.75rem;
        --spacing-lg: 1rem;
        --spacing-xl: 1.5rem;
        --spacing-xxl: 2rem;
    }
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-secondary), var(--font-chinese);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--warm-white);
    overflow-x: hidden;
}

/* ===== 导航栏 ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(254, 254, 254, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-light);
    transition: var(--transition-medium);
}

.navbar {
    padding: 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition-fast);
}

.nav-brand {
    text-align: center;
}

.brand-name {
    font-family: var(--font-primary);
    font-size: 1.8rem;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--text-primary);
    margin-bottom: -4px;
}

.brand-subtitle {
    font-size: 0.75rem;
    letter-spacing: 1px;
    color: var(--text-secondary);
    font-weight: 300;
}

.nav-center {
    flex: 1;
    display: flex;
    justify-content: center;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xxl);
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 400;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    position: relative;
    transition: var(--transition-medium);
    padding: var(--spacing-xs) 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--gold);
    transition: var(--transition-medium);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--gold-dark);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav-actions button {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    color: var(--text-primary);
    font-size: 1.1rem;
    transition: var(--transition-fast);
    position: relative;
}

.nav-actions button:hover {
    color: var(--gold-dark);
    transform: translateY(-1px);
}

.count-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--gold);
    color: var(--warm-white);
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 18px;
    text-align: center;
}

/* ===== 搜索覆盖层 ===== */
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 26, 26, 0.9);
    backdrop-filter: blur(10px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-medium);
}

.search-overlay.active {
    opacity: 1;
    visibility: visible;
}

.search-container {
    position: relative;
    width: 90%;
    max-width: 600px;
}

.search-input {
    width: 100%;
    background: none;
    border: none;
    border-bottom: 2px solid var(--gold);
    color: var(--warm-white);
    font-size: 2rem;
    font-weight: 300;
    padding: var(--spacing-md) 0;
    outline: none;
    text-align: center;
}

.search-input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.search-close {
    position: absolute;
    top: -60px;
    right: 0;
    background: none;
    border: none;
    color: var(--warm-white);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.search-close:hover {
    color: var(--gold);
}

/* ===== 主要内容区域 ===== */
.main-content {
    margin-top: 80px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    display: none;
    padding: var(--spacing-xxl) 0;
}

.section.active {
    display: block;
}

/* ===== 英雄区域 ===== */
.hero-section {
    display: flex;
    align-items: center;
    min-height: 70vh;
    padding: var(--spacing-xxl) var(--spacing-lg);
    max-width: 1400px;
    margin: 0 auto;
    gap: var(--spacing-xxl);
}

.hero-content {
    flex: 1;
    max-width: 500px;
}

.hero-title {
    font-family: var(--font-primary);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 400;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    font-weight: 300;
}

.hero-cta {
    background: var(--primary-black);
    color: var(--warm-white);
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 1px;
    cursor: pointer;
    transition: var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.hero-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gold);
    transition: var(--transition-medium);
    z-index: -1;
}

.hero-cta:hover::before {
    left: 0;
}

.hero-cta:hover {
    color: var(--primary-black);
}

.hero-image {
    flex: 1;
    position: relative;
}

.hero-image img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: 4px;
    box-shadow: 0 20px 60px var(--shadow-heavy);
}

/* ===== 区域标题 ===== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.section-title {
    font-family: var(--font-primary);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 400;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    font-weight: 300;
    max-width: 600px;
    margin: 0 auto;
}

/* ===== 分类标签 ===== */
.category-tabs {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
    overflow-x: auto;
    padding: 0 var(--spacing-lg);
    justify-content: flex-start; /* Change from center to flex-start to fix positioning */
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE and Edge */
}

.category-tabs::-webkit-scrollbar {
    display: none; /* Chrome, Safari and Opera */
}

.category-tab {
    background: var(--cream);
    border: none;
    border-radius: 20px;
    padding: 6px 14px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition-fast);
    flex-shrink: 0;
}

.category-tab:hover {
    background: var(--border-light);
    color: var(--text-primary);
}

.category-tab.active {
    background: var(--gold);
    color: var(--primary-black);
    font-weight: 500;
}

/* ===== 产品标签 ===== */
.product-filter-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
    padding: 0 var(--spacing-lg); /* Match the padding of category tabs */
}

.product-tags {
    flex: 1;
    overflow-x: auto;
    scrollbar-width: none; /* Firefox */
    -ms-overflow-style: none; /* IE and Edge */
}

.product-tags::-webkit-scrollbar {
    display: none; /* Chrome, Safari and Opera */
}

.tags-container {
    display: flex;
    flex-wrap: nowrap;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) 0;
    justify-content: flex-start; /* Align to left like product series */
    margin: 0; /* Remove auto margin to align with left */
}

.tag-item {
    background: none;
    border: none;
    cursor: pointer;
    position: relative;
    padding: var(--spacing-xs) 0;
    white-space: nowrap;
    flex-shrink: 0;
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 400;
    letter-spacing: 0.5px;
    transition: var(--transition-medium);
    margin-right: var(--spacing-sm);
}

.tag-item::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gold);
    transition: var(--transition-medium);
}

.tag-item:hover {
    color: var(--text-primary);
}

.tag-item.active {
    color: var(--text-primary);
}

.tag-item:hover::after,
.tag-item.active::after {
    width: 100%;
}

/* ===== 排序按钮样式 ===== */
.sort-buttons {
    display: flex;
    align-items: center;
    border-radius: 20px;
    background: var(--cream);
    overflow: hidden;
    box-shadow: 0 2px 6px var(--shadow-light);
    margin-left: var(--spacing-md);
    flex-shrink: 0;
}

.sort-button {
    background: none;
    border: none;
    padding: 6px 14px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition-fast);
    position: relative;
}

.sort-button:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 25%;
    height: 50%;
    width: 1px;
    background-color: var(--border-light);
}

.sort-button:hover {
    color: var(--text-primary);
}

.sort-button.active {
    background: var(--gold);
    color: var(--primary-black);
    font-weight: 500;
}

.sort-button i {
    margin-right: 4px;
    font-size: 0.8rem;
    transition: transform 0.3s ease;
}

/* 响应式样式 */


@media (max-width: 768px) {
    .product-filter-row {
        padding: 0 var(--spacing-md);
    }
    
    .tags-container {
        justify-content: flex-start;
    }
    
    .sort-button {
        padding: 6px 10px;
        font-size: 0.8rem;
    }
    
    .sort-button i {
        margin-right: 2px;
    }
}

@media (max-width: 480px) {
    .product-filter-row {
        padding: 0 var(--spacing-sm);
        flex-direction: row; /* Keep horizontal layout */
        align-items: center;
    }
    
    .product-tags {
        width: 60%; /* Reduce width to make room for buttons */
        overflow-x: auto;
    }
    
    .sort-buttons {
        margin-left: var(--spacing-xs);
    }
    
    .sort-button {
        padding: 6px 8px;
        font-size: 0.75rem;
    }
    
    .sort-button span {
        display: none; /* Hide text on very small screens */
    }
    
    .sort-button i {
        margin-right: 0;
    }
}

@media (max-width: 375px) {
    .product-tags {
        width: 50%; /* Further reduce width on very small screens */
    }
    
    .sort-buttons {
        margin-left: var(--spacing-xs);
    }
    
    .sort-button {
        padding: 6px 6px;
    }
}

@media (max-width: 768px) {
    .category-tabs {
        justify-content: flex-start;
        padding: 0 var(--spacing-md);
    }

    .product-tags {
        /* No additional padding needed with new layout */
    }

    .tags-container {
        gap: var(--spacing-xs);
        justify-content: flex-start;
        padding: var(--spacing-xs) 0;
    }
    
    .tag-item {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .category-tabs {
        padding: 0 var(--spacing-sm);
    }

    /* Product tags padding handled by product-filter-row */

    .tags-container {
        padding: var(--spacing-xs) 0;
    }

    .tag-item {
        font-size: 0.85rem;
    }
}

/* ===== 产品网格 - Masonry布局 ===== */
.products-grid {
    margin-bottom: var(--spacing-xl);
    width: 100%;
}

/* Masonry布局的网格项目样式 */
.grid-sizer,
.grid-item {
    width: 16.666%; /* 默认6列 */
    padding: 0 4px;
    box-sizing: border-box;
}

.products-grid .grid-item {
    margin-bottom: 4px !important; /* 与左右间距完全一致 */
    float: left;
    padding-bottom: 0;
}

/* 大屏幕 (1400px - 1799px) - 5列 */
@media (max-width: 1799px) {
    .grid-sizer,
    .grid-item {
        width: 20%; /* 5列 */
        padding: 0 4px;
    }
    
    .products-grid .grid-item {
        margin-bottom: 4px !important; /* 与左右间距完全一致 */
    }
}

/* 中等屏幕 (1200px - 1399px) - 4列 */
@media (max-width: 1399px) {
    .grid-sizer,
    .grid-item {
        width: 25%; /* 4列 */
        padding: 0 4px;
    }
    
    .products-grid .grid-item {
        margin-bottom: 4px !important; /* 与左右间距完全一致 */
    }
}

/* 平板和小笔记本 (992px - 1199px) - 4列 */
@media (max-width: 1199px) {
    .grid-sizer,
    .grid-item {
        width: 25%; /* 4列 */
        padding: 0 3px;
    }
    
    .products-grid .grid-item {
        margin-bottom: 3px !important; /* 与左右间距完全一致 */
    }
    
    .case-card {
        margin-bottom: 3px; /* 与左右间距完全一致 */
    }
}

/* 平板和折叠屏 (768px - 991px) - 3列 */
@media (max-width: 991px) {
    .grid-sizer,
    .grid-item {
        width: 33.333%; /* 3列 */
        padding: 0 3px;
    }
    
    .products-grid .grid-item {
        margin-bottom: 3px !important; /* 与左右间距完全一致 */
    }
    
    .products-grid {
        margin-bottom: var(--spacing-sm);
    }
    
    .case-card {
        margin-bottom: 3px; /* 与左右间距完全一致 */
    }
}

/* 小屏幕和折叠屏竖屏 (480px - 767px) - 3列 */
@media (max-width: 767px) {
    .grid-sizer,
    .grid-item {
        width: 33.333%; /* 3列 */
        padding: 0 2px;
    }
    
    .products-grid .grid-item {
        margin-bottom: 2px !important; /* 与左右间距完全一致 */
    }
    
    .case-card {
        margin-bottom: 2px; /* 与左右间距完全一致 */
    }
}

/* 小手机屏幕 (320px - 479px) - 2列 */
@media (max-width: 479px) {
    .grid-sizer,
    .grid-item {
        width: 50%; /* 2列 */
        padding: 0 2px;
    }
    
    .products-grid .grid-item {
        margin-bottom: 2px !important; /* 与左右间距完全一致 */
    }
    
    .case-card {
        margin-bottom: 2px; /* 与左右间距完全一致 */
    }
}

/* 确保极小屏幕也至少显示2列 */
@media (max-width: 320px) {
    .grid-sizer,
    .grid-item {
        width: 50%; /* 保持2列 */
        padding: 0 1px;
    }
    
    .products-grid .grid-item {
        margin-bottom: 1px !important; /* 与左右间距完全一致 */
    }
}

@media (max-width: 767px) {
    .category-tabs {
        overflow-x: auto;
        justify-content: flex-start;
    }
    
    .product-card {
        margin-bottom: 0;
    }
    
    .product-info {
        padding: 6px 8px 8px;
    }
}

@media (max-width: 479px) {
    .category-tabs {
        padding: 0 5px;
    }
    
    .product-card {
        margin-bottom: 0;
    }
    
    .product-image-wrapper {
        border-radius: 6px 6px 0 0;
    }
    
    .product-brand {
        font-size: 0.7rem;
        margin-bottom: 2px;
    }
    
    .product-name {
        font-size: 0.65rem;
        margin-bottom: 3px;
    }
    
    .product-price {
        font-size: 0.75rem;
    }
    
    .product-original-price {
        font-size: 0.65rem;
    }
    
    .product-info {
        padding: 5px 6px 6px;
    }
    
    .promotion-tag {
        padding: 2px 6px;
        font-size: 0.65rem;
    }
}

.product-card {
    background: #ffffff;
    border-radius: 4px;
    overflow: hidden;
    transition: var(--transition-medium);
    cursor: pointer;
    position: relative;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    display: block;
    width: 100%;
    margin: 0; /* 确保没有外边距 */
}

.product-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

@media (max-width: 767px) {
    .product-card {
        margin-bottom: 0;
    }
}

@media (max-width: 479px) {
    .product-card {
        margin-bottom: 0;
    }
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px var(--shadow-medium);
}

.product-card-header {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    z-index: 10;
    display: flex;
    gap: var(--spacing-xs);
}

.favorite-btn {
    background: rgba(255, 255, 255, 0.9);
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    box-shadow: 0 4px 12px var(--shadow-light);
}

.favorite-btn:hover {
    background: var(--warm-white);
    transform: scale(1.1);
}

.favorite-btn i {
    font-size: 1.1rem;
    color: var(--text-light);
    transition: var(--transition-fast);
}

.favorite-btn.active i {
    color: var(--gold);
}

.product-image-wrapper {
    position: relative;
    overflow: hidden;
    border-radius: 0;
    width: 100%;
}

.product-image {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition-medium);
    object-fit: cover;
}

.product-card:hover .product-image {
    transform: scale(1.02);
}

.product-info {
    padding: 8px 10px 10px;
}

.product-brand {
    font-size: 0.8rem;
    color: var(--text-primary);
    margin-bottom: 2px;
    font-weight: 500;
}

.product-name {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 3px;
    line-height: 1.2;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-price {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1px;
    display: flex;
    align-items: center;
    gap: 5px;
}

.current-price {
    color: var(--text-primary);
}

.product-original-price {
    font-size: 0.75rem;
    color: var(--text-light);
    text-decoration: line-through;
    margin-top: 0;
    display: inline-block;
}

.promotion-tag {
    position: absolute;
    top: 0;
    left: 0;
    background-color: rgba(139, 113, 74, 0.85);
    color: #fff;
    padding: 3px 8px;
    font-size: 0.7rem;
    z-index: 5;
}

/* ===== 案例网格 ===== */
.cases-grid {
    margin-bottom: var(--spacing-xl);
    width: 100%;
}

.case-card {
    background: var(--warm-white);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition-medium);
    cursor: pointer;
    margin: 0 !important; /* 移除所有外边距 */
}

.case-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--shadow-medium);
}

.case-image {
    width: 100%;
    height: auto;
    object-fit: cover;
    transition: var(--transition-slow);
    border-radius: 8px 8px 0 0;
}

.case-card:hover .case-image {
    transform: scale(1.05);
}

.case-info {
    padding: var(--spacing-sm);
}

.case-category {
    font-size: 0.8rem;
    color: var(--gold);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: var(--spacing-xs);
}

.case-title {
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
    line-height: 1.2;
}


/* ===== 案例标签样式 ===== */
.case-tags {
    margin-top: 4px;
}

.case-tag {
    display: inline-block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    background: rgba(212, 175, 55, 0.1);
    padding: 2px 6px;
    border-radius: 3px;
    margin-right: 4px;
    font-weight: 400;
    line-height: 1.2;
}

.case-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.case-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-light);
}

/* ===== 品牌故事区域 ===== */
.about-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-xxl);
    max-width: 1200px;
    margin: 0 auto;
}

.about-text {
    flex: 1;
}

.about-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-xl);
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.feature-item {
    text-align: center;
}

.feature-item i {
    font-size: 2rem;
    color: var(--gold);
    margin-bottom: var(--spacing-sm);
}

.feature-item h3 {
    font-family: var(--font-primary);
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.feature-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

.about-image {
    flex: 1;
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 4px;
}

/* ===== 侧边栏 ===== */
.cart-sidebar,
.favorites-sidebar {
    position: fixed;
    top: 0;
    right: -600px;
    width: 600px;
    height: 100vh;
    background: var(--warm-white);
    z-index: 3000;
    transition: var(--transition-medium);
    display: flex;
    flex-direction: column;
}

.cart-sidebar.active,
.favorites-sidebar.active {
    right: 0;
}

.cart-header,
.favorites-header {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cart-header h3,
.favorites-header h3 {
    font-family: var(--font-primary);
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--text-primary);
}

.cart-close,
.favorites-close {
    background: none;
    border: none;
    font-size: 1.2rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-fast);
}

.cart-close:hover,
.favorites-close:hover {
    color: var(--text-primary);
}

.cart-content,
.favorites-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
}

.cart-empty,
.favorites-empty {
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-lg);
    color: var(--text-secondary);
}

.cart-empty i,
.favorites-empty i {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-light);
}

.cart-empty p,
.favorites-empty p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
}

.continue-shopping {
    background: var(--primary-black);
    color: var(--warm-white);
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-fast);
}

.continue-shopping:hover {
    background: var(--gold);
    color: var(--primary-black);
}

.cart-footer {
    border-top: 1px solid var(--border-light);
    padding: var(--spacing-lg);
}

.cart-total {
    margin-bottom: var(--spacing-lg);
}

.total-line {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-xs);
    font-size: 0.95rem;
}

.total-final {
    font-weight: 600;
    font-size: 1.1rem;
    padding-top: var(--spacing-xs);
    border-top: 1px solid var(--border-light);
}

.cart-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.btn {
    padding: var(--spacing-md);
    border: none;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: var(--transition-fast);
    text-align: center;
}

.btn-outline {
    background: none;
    border: 1px solid var(--border-light);
    color: var(--text-primary);
}

.btn-outline:hover {
    background: var(--primary-black);
    color: var(--warm-white);
    border-color: var(--primary-black);
}

.btn-primary {
    background: var(--gold);
    color: var(--primary-black);
}

.btn-primary:hover {
    background: var(--gold-dark);
}

/* ===== 遮罩层 ===== */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 26, 26, 0.5);
    z-index: 2500;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-medium);
}

.overlay.active {
    opacity: 1;
    visibility: visible;
}

/* ===== 响应式设计 ===== */
@media (max-width: 1024px) {
    .hero-section {
        flex-direction: column;
        text-align: center;
        padding: var(--spacing-xl) var(--spacing-lg);
    }
    
    .hero-content {
        max-width: none;
    }
    
    .about-content {
        flex-direction: column;
        text-align: center;
    }
    
    .about-features {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 var(--spacing-md);
        height: 70px;
    }
    
    .main-content {
        margin-top: 70px;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-center {
        display: none;
    }
    
    .brand-name {
        font-size: 1.5rem;
    }
    
    .nav-actions {
        gap: var(--spacing-sm);
    }
    
    .products-controls {
        margin-bottom: var(--spacing-xl);
    }
    
    .category-tabs {
        gap: var(--spacing-md);
        padding: 0 var(--spacing-md);
    }
    

    
    .cart-sidebar,
    .favorites-sidebar {
        width: 100vw;
        right: -100vw;
    }

    .cart-sidebar.active,
    .favorites-sidebar.active {
        right: 0;
    }
    
    .section {
        padding: var(--spacing-xl) 0;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    

    
    .product-card-header {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
    }
    
    .favorite-btn {
        width: 40px;
        height: 40px;
    }
    
    .product-info {
        padding: var(--spacing-md);
    }
}

/* ===== 动画和过渡效果 ===== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.product-card {
    animation: fadeInUp 0.6s ease forwards;
}

.case-card {
    animation: slideInRight 0.6s ease forwards;
}

/* ===== 滚动条样式 ===== */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--cream);
}

::-webkit-scrollbar-thumb {
    background: var(--gold);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--gold-dark);
}

/* ===== 选择文本样式 ===== */
::selection {
    background: var(--gold);
    color: var(--primary-black);
}

::-moz-selection {
    background: var(--gold);
    color: var(--primary-black);
}/* ===== 购物车
项目样式 ===== */
.cart-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--border-light);
    animation: fadeInUp 0.3s ease;
}

.cart-item:last-child {
    border-bottom: none;
}

.cart-item-image {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 4px;
    flex-shrink: 0;
}

.cart-item-info {
    flex: 1;
    min-width: 0;
}

.cart-item-brand {
    font-size: 0.7rem;
    color: var(--text-light);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 2px;
}

.cart-item-name {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
    line-height: 1.3;
}

.cart-item-spec {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.cart-item-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.quantity-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.quantity-controls button {
    background: var(--border-light);
    border: none;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    color: var(--text-primary);
    transition: var(--transition-fast);
}

.quantity-controls button:hover:not(:disabled) {
    background: var(--gold);
    color: var(--primary-black);
}

.quantity-controls button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.quantity-controls span {
    font-weight: 500;
    min-width: 20px;
    text-align: center;
    font-size: 0.9rem;
}

.remove-item {
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: var(--spacing-xs);
    transition: var(--transition-fast);
}

.remove-item:hover {
    color: #e74c3c;
}

.cart-item-price {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
    align-self: flex-start;
    margin-top: 2px;
}

/* ===== 收藏夹项目样式 ===== */
.favorites-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    transition: var(--transition-fast);
}

.favorites-item:hover {
    background: var(--cream);
    margin: 0 calc(-1 * var(--spacing-lg));
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
}

.favorites-item:last-child {
    border-bottom: none;
}

.favorites-item-image {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 4px;
    flex-shrink: 0;
}

.favorites-item-info {
    flex: 1;
}

.favorites-item-brand {
    font-size: 0.7rem;
    color: var(--text-light);
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 2px;
}

.favorites-item-name {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 2px;
    font-size: 0.9rem;
    line-height: 1.3;
}

.favorites-item-price {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.favorites-item-remove {
    background: none;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    padding: var(--spacing-xs);
    transition: var(--transition-fast);
    align-self: flex-start;
}

.favorites-item-remove:hover {
    color: #e74c3c;
}

/* ===== 模态框样式更新 ===== */
.modal {
    display: none;
    position: fixed;
    z-index: 3500;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(26, 26, 26, 0.8);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: var(--warm-white);
    margin: 3% auto;
    padding: 0;
    border-radius: 0;
    width: 90%;
    max-width: 900px;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 25px 80px var(--shadow-heavy);
}

.close {
    position: absolute;
    right: var(--spacing-lg);
    top: var(--spacing-lg);
    font-size: 1.5rem;
    font-weight: 300;
    cursor: pointer;
    z-index: 10;
    color: var(--text-light);
    transition: var(--transition-fast);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
}

.close:hover {
    color: var(--text-primary);
    background: var(--warm-white);
}

.product-detail {
    padding: var(--spacing-xxl);
}

.product-detail-header {
    display: flex;
    gap: var(--spacing-xxl);
    margin-bottom: var(--spacing-xxl);
}

.product-detail-image {
    width: 400px;
    height: 400px;
    object-fit: cover;
    border-radius: 4px;
    flex-shrink: 0;
}

.product-detail-info {
    flex: 1;
    padding-left: var(--spacing-lg);
}

.product-detail-brand {
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 6px;
    font-weight: 500;
}

.product-detail-info h2 {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 10px;
    line-height: 1.3;
}

.product-detail-info p {
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
}

.product-detail-price {
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.product-detail-price .current-price {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.product-detail-price .original-price {
    font-size: 1rem;
    color: var(--text-light);
    text-decoration: line-through;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-xl);
    background: var(--warm-white);
}

.specs-table th,
.specs-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.9rem;
}

.specs-table th {
    background: var(--cream);
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.specs-table td {
    color: var(--text-secondary);
}

.add-to-cart-btn {
    background: var(--gold);
    color: var(--primary-black);
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    letter-spacing: 0.5px;
}

.add-to-cart-btn:hover {
    background: var(--gold-dark);
}

/* ===== 响应式更新 ===== */
@media (max-width: 768px) {
    .cart-item {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .cart-item-image {
        width: 100%;
        height: 120px;
    }
    
    .cart-item-controls {
        margin-top: var(--spacing-sm);
    }
    
    .product-detail-header {
        flex-direction: column;
    }
    
    .product-detail-image {
        width: 100%;
        height: 300px;
    }
    
    .product-detail {
        padding: var(--spacing-lg);
    }
    
    .specs-table {
        font-size: 0.8rem;
    }
    
    .specs-table th,
    .specs-table td {
        padding: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .modal-content {
        margin: 5% auto;
        width: 95%;
    }
    
    .close {
        right: var(--spacing-sm);
        top: var(--spacing-sm);
        width: 35px;
        height: 35px;
        font-size: 1.2rem;
    }
    
    .product-detail {
        padding: var(--spacing-md);
    }
    
    .product-detail-info h2 {
        font-size: 1.5rem;
    }
    
    .product-detail-price {
        font-size: 1.2rem;
    }
}/*
 ===== 联系我们页面样式 ===== */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    max-width: 1200px;
    margin: 0 auto;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--cream);
    border-radius: 8px;
    transition: var(--transition-medium);
}

.contact-item:hover {
    background: #f0ede8;
    transform: translateY(-2px);
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--gold);
    margin-top: 4px;
    flex-shrink: 0;
}

.contact-item h3 {
    font-family: var(--font-primary);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.contact-item p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
}

.contact-form {
    background: var(--warm-white);
    padding: var(--spacing-xl);
    border-radius: 8px;
    box-shadow: 0 10px 40px var(--shadow-light);
}

.contact-form h3 {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--border-light);
    border-radius: 4px;
    font-size: 0.95rem;
    font-family: var(--font-secondary), var(--font-chinese);
    transition: var(--transition-fast);
    background: var(--warm-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

.form-group select {
    cursor: pointer;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.contact-form .btn {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-top: var(--spacing-sm);
}

/* ===== 移除收藏相关样式 ===== */
.product-card-header {
    display: none;
}

.favorite-btn,
.favorites-sidebar,
.favorites-content,
.favorites-header,
.favorites-empty,
.favorites-item {
    display: none !important;
}

/* ===== 更新产品卡片样式 ===== */
.product-card {
    display: inline-block;
    width: 100%;
    margin-bottom: 0 !important; /* 强制移除底部间距 */
    background: var(--warm-white);
    border-radius: 8px;
    overflow: hidden;
    transition: var(--transition-medium);
    cursor: pointer;
    break-inside: avoid;
    box-shadow: 0 2px 8px var(--shadow-light);
}

.product-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--shadow-medium);
}

/* ===== 响应式联系页面 ===== */
@media (max-width: 1024px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .contact-info {
        order: 2;
    }
    
    .contact-form {
        order: 1;
    }
}

@media (max-width: 768px) {
    .contact-item {
        padding: var(--spacing-md);
    }
    
    .contact-item i {
        font-size: 1.2rem;
    }
    
    .contact-form {
        padding: var(--spacing-lg);
    }
    
    .contact-form h3 {
        font-size: 1.3rem;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .contact-content {
        gap: var(--spacing-lg);
    }
    
    .contact-info {
        gap: var(--spacing-md);
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }
    
    .contact-item i {
        margin-top: 0;
    }
    
    .contact-form {
        padding: var(--spacing-md);
    }
    
    .form-group {
        margin-bottom: var(--spacing-md);
    }
}

/* ===== 移除英雄区域样式 ===== */
.hero-section,
.hero-content,
.hero-title,
.hero-subtitle,
.hero-cta,
.hero-image {
    display: none !important;
}

/* ===== 调整主内容区域 ===== */
.main-content {
    margin-top: 80px;
}

.section {
    padding: var(--spacing-xxl) 0;
}

#products.section {
    padding-top: var(--spacing-xl);
}

/* ===== 表单验证样式 ===== */
.form-group input:invalid,
.form-group select:invalid,
.form-group textarea:invalid {
    border-color: #e74c3c;
}

.form-group input:valid,
.form-group select:valid,
.form-group textarea:valid {
    border-color: #27ae60;
}

/* ===== 加载状态样式 ===== */
.contact-form.loading {
    opacity: 0.7;
    pointer-events: none;
}

.contact-form.loading .btn::after {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: var(--spacing-xs);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}/* ==
=== 更新的搜索覆盖层样式 ===== */
.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    z-index: 2000;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 10vh;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-medium);
    cursor: pointer; /* 添加指针样式表明可点击 */
}

.search-overlay.active {
    opacity: 1;
    visibility: visible;
}

.search-container {
    width: 90%;
    max-width: 700px;
    background: var(--warm-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 25px 80px var(--shadow-heavy);
    cursor: default; /* 重置为默认光标 */
}

.search-input-wrapper {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.search-input {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 300;
    padding: var(--spacing-md) 0;
    outline: none;
    font-family: var(--font-secondary), var(--font-chinese);
}

.search-input::placeholder {
    color: var(--text-light);
}

.search-btn,
.search-cancel {
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.1rem;
    transition: var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.search-btn {
    background: var(--gold);
    color: var(--primary-black);
}

.search-btn:hover {
    background: var(--gold-dark);
    transform: scale(1.05);
}

.search-cancel {
    background: var(--border-light);
    color: var(--text-secondary);
}

.search-cancel:hover {
    background: #ddd;
    color: var(--text-primary);
    transform: scale(1.05);
}

.search-results {
    max-height: 60vh;
    overflow-y: auto;
}

.search-results-header {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--cream);
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-light);
}

.search-results-list {
    padding: var(--spacing-sm);
}

.search-result-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    cursor: pointer;
    border-radius: 8px;
    transition: var(--transition-fast);
    margin-bottom: var(--spacing-xs);
}

.search-result-item:hover {
    background: var(--cream);
}

.search-result-image {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 6px;
    margin-right: var(--spacing-md);
    background: var(--border-light);
    flex-shrink: 0;
}

.search-result-info {
    flex: 1;
    min-width: 0;
}

.search-result-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    font-size: 1rem;
}

.search-result-name mark {
    background: var(--gold);
    color: var(--primary-black);
    padding: 1px 4px;
    border-radius: 3px;
    font-weight: 600;
}

.search-result-details {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 2px;
}

.search-result-code {
    font-size: 0.8rem;
    color: var(--text-light);
    font-family: monospace;
}

.search-show-all {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: center;
    background: var(--cream);
    color: var(--gold-dark);
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition-fast);
    border-top: 1px solid var(--border-light);
}

.search-show-all:hover {
    background: #e8e5e0;
}

.search-no-results,
.search-loading,
.search-error {
    padding: var(--spacing-xxl) var(--spacing-lg);
    text-align: center;
    color: var(--text-secondary);
}

.search-no-results i,
.search-loading i,
.search-error i {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.search-loading i {
    color: var(--gold);
}

.search-error i {
    color: #e74c3c;
}

.search-no-results p,
.search-loading span,
.search-error p {
    font-size: 1.1rem;
    margin-top: var(--spacing-sm);
}

/* ===== 响应式搜索样式 ===== */
@media (max-width: 768px) {
    .search-overlay {
        padding-top: 5vh;
    }
    
    .search-container {
        width: 95%;
        margin: 0 auto;
    }
    
    .search-input {
        font-size: 1.2rem;
    }
    
    .search-btn,
    .search-cancel {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .search-result-item {
        padding: var(--spacing-sm);
    }
    
    .search-result-image {
        width: 50px;
        height: 50px;
        margin-right: var(--spacing-sm);
    }
    
    .search-result-name {
        font-size: 0.9rem;
    }
    
    .search-result-details {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .search-overlay {
        padding-top: 2vh;
    }
    
    .search-input-wrapper {
        padding: var(--spacing-md);
    }
    
    .search-input {
        font-size: 1.1rem;
        padding: var(--spacing-sm) 0;
    }
    
    .search-results {
        max-height: 50vh;
    }
}



.search-icon,
.search-clear {
    display: none;
}

.search-dropdown {
    display: none;
}/* ===
== 分类标签滑动指示器 ===== */
.category-tabs-container {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

/* 删除左右两边的光晕效果 */
.category-tabs::before,
.category-tabs::after {
    display: none;
}

/* 移除光晕效果的容器样式 */
.category-tabs-container {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

/* ===== 移动端分类标签优化 ===== */
@media (max-width: 768px) {
    .category-tabs {
        gap: var(--spacing-lg);
        padding: 0 var(--spacing-md);
        justify-content: flex-start;
    }
    
    .category-tab {
        min-width: auto;
    }
    
    .tab-text {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .category-tabs {
        gap: var(--spacing-md);
        padding: 0 var(--spacing-sm);
    }
    
    .tab-text {
        font-size: 0.85rem;
    }
}

/* ===== 搜索按钮移动端优化 ===== */
@media (max-width: 480px) {
    .search-input-wrapper {
        padding: var(--spacing-md);
        gap: var(--spacing-xs);
    }
    
    .search-input {
        font-size: 1.2rem;
    }
    
    .search-btn,
    .search-cancel {
        width: 36px;
        height: 36px;
        font-size: 0.9rem;
    }
}

/* ===== 响应式产品控制 ===== */
@media (max-width: 1024px) {
    .products-grid.columns-4 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .products-controls {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-md);
    }
    
    .category-tabs {
        padding: 0 var(--spacing-md);
        order: 1;
    }
    

    
    .products-grid.columns-3,
    .products-grid.columns-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .products-grid,
    .products-grid.columns-2,
    .products-grid.columns-3,
    .products-grid.columns-4 {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-sm);
    }
    

}

/* 移动端菜单 */
.mobile-menu {
    position: absolute;
    top: 80px;
    left: 0;
    width: 33%;
    background: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    z-index: 999;
    display: none;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.mobile-menu.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.mobile-nav-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mobile-nav-link {
    display: block;
    padding: 12px 15px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-light);
    transition: background-color 0.2s ease;
}

.mobile-nav-link:hover,
.mobile-nav-link:focus {
    background-color: rgba(0, 0, 0, 0.03);
    color: var(--gold-dark);
}

/* 显示移动端菜单按钮 */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-center {
        display: none;
    }
}

/* 汉堡图标动画 */
.nav-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* 移动端菜单响应式 */
@media (max-width: 768px) {
    .mobile-menu {
        top: 70px;
        width: 40%;
    }
    
    .nav-container {
        height: 70px;
    }
}

@media (max-width: 480px) {
    .mobile-menu {
        width: 50%;
    }
    
    .mobile-nav-link {
        padding: 10px 15px;
        font-size: 0.85rem;
    }
}

/* 产品详情页面样式 */
.breadcrumb {
    display: flex;
    align-items: center;
    margin: 20px 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition-fast);
}

.breadcrumb a:hover {
    color: var(--gold);
}

.breadcrumb i {
    margin: 0 8px;
    font-size: 0.7rem;
}

.product-detail-page {
    margin-bottom: 50px;
}

.product-detail-page-content {
    display: flex;
    gap: 40px;
}

.product-detail-gallery {
    flex: 1;
    max-width: 600px;
}

.product-main-image {
    margin-bottom: 15px;
    border: 1px solid var(--border-light);
}

.product-main-image img {
    width: 100%;
    height: auto;
    display: block;
}

.product-thumbnails {
    display: flex;
    gap: 10px;
    overflow-x: auto;
}

.thumbnail {
    width: 80px;
    height: 80px;
    border: 1px solid var(--border-light);
    cursor: pointer;
    opacity: 0.7;
    transition: var(--transition-fast);
}

.thumbnail.active {
    border-color: var(--gold);
    opacity: 1;
}

.thumbnail:hover {
    opacity: 1;
}

.thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-detail-info {
    flex: 1;
}

.product-detail-brand {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-weight: 500;
}

.product-detail-title {
    font-family: var(--font-primary);
    font-size: 2rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 15px;
    line-height: 1.3;
}

.product-detail-price {
    margin-bottom: 20px;
}

.product-detail-price .current-price {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-right: 12px;
}

.product-detail-price .original-price {
    font-size: 1.2rem;
    color: var(--text-light);
    text-decoration: line-through;
}

.product-detail-meta {
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-light);
}

.product-detail-meta p {
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.product-detail-description {
    margin-bottom: 30px;
    line-height: 1.6;
    color: var(--text-secondary);
}

.product-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 50px 0;
}

.product-loading i {
    font-size: 2rem;
    color: var(--gold);
    margin-bottom: 15px;
}

.product-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 50px 0;
    text-align: center;
}

.product-error i {
    font-size: 3rem;
    color: #e74c3c;
    margin-bottom: 15px;
}

.product-error p {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.related-products {
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid var(--border-light);
}

.related-products .section-title {
    margin-bottom: 30px;
    text-align: left;
}

@media (max-width: 991px) {
    .product-detail-page-content {
        flex-direction: column;
    }
    
    .product-detail-gallery {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .breadcrumb {
        font-size: 0.75rem;
        margin: 15px 0;
    }
    
    .product-detail-title {
        font-size: 1.6rem;
    }
    
    .product-detail-price .current-price {
        font-size: 1.4rem;
    }
    
    .product-detail-price .original-price {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .product-detail-title {
        font-size: 1.4rem;
    }
    
    .product-thumbnails {
        justify-content: center;
    }
    
    .thumbnail {
        width: 60px;
        height: 60px;
    }
}

/* ===== 强制产品卡片间距 ===== */
.grid-item .product-card {
    margin: 0 !important;
    padding: 0 !important;
}

.products-grid .grid-item {
    padding-top: 0 !important;
    padding-bottom: 0 !important;
}

/* ===== 强制案例卡片间距 ===== */
.grid-item .case-card {
    margin: 0 !important;
    padding: 0 !important;
}

.cases-grid .grid-item {
    padding-top: 0 !important;
    padding-bottom: 0 !important;
    margin-bottom: 8px !important; /* 放大一倍的上下间距 */
    float: left;
}

/* ===== 懒加载样式 ===== */
.lazy-loading {
    background-color: #f5f5f5;
    background-image: linear-gradient(90deg, #f5f5f5 25%, #e8e8e8 50%, #f5f5f5 75%);
    background-size: 200% 100%;
    animation: lazy-loading-shimmer 1.5s infinite;
    transition: opacity 0.3s ease-in-out;
}

.lazy-loaded {
    animation: lazy-fade-in 0.3s ease-in-out;
}

.lazy-error {
    background-color: #f8f8f8;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23ccc'%3E%3Cpath d='M21 19V5c0-1.1-.9-2-2-2H5c-1.1 0-2 .9-2 2v14c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2zM8.5 13.5l2.5 3.01L14.5 12l4.5 6H5l3.5-4.5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
    background-size: 48px 48px;
    opacity: 0.7;
}

@keyframes lazy-loading-shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

@keyframes lazy-fade-in {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* 确保懒加载图片保持宽高比 */
.product-image.lazy-loading,
.case-image.lazy-loading {
    min-height: 200px;
    object-fit: cover;
}

/* 响应式懒加载占位符高度 */
@media (max-width: 767px) {
    .product-image.lazy-loading,
    .case-image.lazy-loading {
        min-height: 150px;
    }
}

@media (max-width: 479px) {
    .product-image.lazy-loading,
    .case-image.lazy-loading {
        min-height: 120px;
    }
}

/* 懒加载内容区域 */
.lazy-content {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease-out, transform 0.4s ease-out;
}

.lazy-content.lazy-loaded {
    opacity: 1;
    transform: translateY(0);
}

/* 预加载关键图片的优化 */
.product-image[loading="lazy"],
.case-image[loading="lazy"] {
    transition: opacity 0.3s ease-in-out;
}

/* 确保懒加载不影响Masonry布局 */
.products-grid .grid-item .lazy-loading,
.cases-grid .grid-item .lazy-loading {
    display: block;
    width: 100%;
}

/* 确保案例网格和产品网格使用相同的间距规则 */
@media (max-width: 1799px) {
    .cases-grid .grid-item {
        margin-bottom: 8px !important; /* 放大一倍的上下间距 */
    }
}

@media (max-width: 1399px) {
    .cases-grid .grid-item {
        margin-bottom: 8px !important; /* 放大一倍的上下间距 */
    }
}

@media (max-width: 1199px) {
    .cases-grid .grid-item {
        margin-bottom: 6px !important; /* 放大一倍的上下间距 */
    }
}

@media (max-width: 991px) {
    .cases-grid .grid-item {
        margin-bottom: 6px !important; /* 放大一倍的上下间距 */
    }
}

@media (max-width: 767px) {
    .cases-grid .grid-item {
        margin-bottom: 4px !important; /* 放大一倍的上下间距 */
    }
}

@media (max-width: 479px) {
    .cases-grid .grid-item {
        margin-bottom: 4px !important; /* 放大一倍的上下间距 */
    }
}

@media (max-width: 320px) {
    .cases-grid .grid-item {
        margin-bottom: 2px !important; /* 放大一倍的上下间距 */
    }
}

/* ===== 浮动操作按钮 ===== */
.floating-action-button {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 48px;
    height: 48px;
    background: var(--gold);
    border: none;
    border-radius: 50%;
    box-shadow: 0 3px 8px rgba(212, 175, 55, 0.2), 0 1px 4px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-medium);
    color: var(--primary-black);
    font-size: 1.3rem;
    opacity: 0.5;
}

.floating-action-button:hover {
    background: var(--gold-light);
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 4px 12px rgba(212, 175, 55, 0.3), 0 2px 6px rgba(0, 0, 0, 0.15);
    opacity: 0.8;
}

.floating-action-button:active {
    transform: translateY(0) scale(0.95);
    box-shadow: 0 2px 8px rgba(212, 175, 55, 0.3), 0 1px 4px rgba(0, 0, 0, 0.15);
}

.floating-action-button i {
    transition: transform var(--transition-fast);
}

.floating-action-button:hover i {
    transform: rotate(90deg);
}

/* 移动端浮动按钮调整 */
@media (max-width: 768px) {
    .floating-action-button {
        bottom: 80px;
        right: 20px;
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .floating-action-button {
        bottom: 80px;
        right: 16px;
        width: 42px;
        height: 42px;
        font-size: 1.3rem;
    }
}

/* 确保浮动按钮不被其他元素遮挡 */
.floating-action-button {
    z-index: 1001;
}

/* 在有底部导航的情况下调整位置 */
@media (max-width: 768px) {
    body.has-bottom-nav .floating-action-button {
        bottom: 80px; /* 为底部导航留出空间 */
    }
}

/* 横屏模式优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .floating-action-button {
        bottom: 12px;
        right: 12px;
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
    }
}

/* ===== 添加案例页面样式 ===== */
.add-case-section {
    padding: var(--spacing-xl) 0;
    min-height: 100vh;
    background: linear-gradient(135deg, #fefefe 0%, #f8f6f3 100%);
}

.add-case-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
    position: relative;
}

.back-button {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    transition: var(--transition-fast);
}

.back-button:hover {
    background: var(--border-light);
    color: var(--text-primary);
}

.back-button i {
    font-size: 0.8rem;
}

.page-title {
    font-family: var(--font-primary);
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.page-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin: 0;
}

.add-case-form {
    max-width: 800px;
    margin: 0 auto;
    background: var(--warm-white);
    border-radius: 12px;
    box-shadow: 0 8px 32px var(--shadow-light);
    overflow: hidden;
}

.ai-section,
.ai-generation-section {
    padding: var(--spacing-xl);
    border-bottom: 1px solid var(--border-light);
}

.ai-generation-section {
    background: linear-gradient(135deg, #f8f6f3 0%, #fefefe 100%);
}

.add-case-form .section-title {
    font-family: var(--font-primary);
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.add-case-form .section-title i {
    color: var(--gold);
    font-size: 1.2rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--border-light);
    border-radius: 8px;
    font-size: 0.95rem;
    font-family: var(--font-secondary), var(--font-chinese);
    transition: var(--transition-fast);
    background: var(--warm-white);
    resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
}

.form-group select {
    cursor: pointer;
}

/* 图片上传区域 */
.image-upload-area {
    border: 2px dashed var(--border-light);
    border-radius: 8px;
    transition: var(--transition-fast);
}

.upload-placeholder {
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-fast);
}

.upload-placeholder:hover {
    background: #f8f6f3;
    border-color: var(--gold);
}

.upload-placeholder i {
    font-size: 2rem;
    color: var(--gold);
    margin-bottom: var(--spacing-sm);
    display: block;
}

.upload-placeholder span {
    display: inline-block;
    background: var(--gold);
    color: var(--primary-black);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.upload-placeholder p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

.image-preview-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    display: none;
}

.image-preview-container.has-images {
    display: grid;
}

.image-preview {
    position: relative;
    aspect-ratio: 1;
    border-radius: 8px;
    overflow: hidden;
    background: var(--border-light);
}

.image-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-preview .remove-image {
    position: absolute;
    top: 4px;
    right: 4px;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: none;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    transition: var(--transition-fast);
}

.image-preview .remove-image:hover {
    background: #e74c3c;
}

.generate-btn {
    background: linear-gradient(135deg, var(--gold) 0%, var(--gold-light) 100%);
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: 25px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin: 0 auto;
    transition: var(--transition-medium);
}

.generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(212, 175, 55, 0.3);
}

.generate-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.generate-btn.loading::after {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: var(--spacing-xs);
}

.form-actions {
    padding: var(--spacing-xl);
    background: #f8f6f3;
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
}

.form-actions .btn {
    min-width: 120px;
    padding: var(--spacing-md) var(--spacing-xl);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .add-case-section {
        padding: var(--spacing-lg) 0;
    }

    .back-button {
        position: static;
        transform: none;
        margin-bottom: var(--spacing-md);
        align-self: flex-start;
    }

    .add-case-header {
        text-align: left;
        margin-bottom: var(--spacing-xl);
    }

    .page-title {
        font-size: 2rem;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .ai-section,
    .ai-generation-section {
        padding: var(--spacing-lg);
    }

    .form-actions {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .form-actions .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .page-title {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 1.2rem;
    }

    .ai-section,
    .ai-generation-section {
        padding: var(--spacing-md);
    }

    .form-actions {
        padding: var(--spacing-md);
    }

    .image-preview-container {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    }
}

/* ===== 表单验证样式 ===== */
.form-group input.error,
.form-group select.error,
.form-group textarea.error {
    border-color: #e74c3c;
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
}

.field-error {
    color: #e74c3c;
    font-size: 0.85rem;
    margin-top: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: 4px;
}

.field-error::before {
    content: '⚠';
    font-size: 0.9rem;
}

.character-counter {
    font-size: 0.8rem;
    color: var(--text-light);
    text-align: right;
    margin-top: 4px;
    transition: var(--transition-fast);
}

.character-counter.warning {
    color: #f39c12;
}

.character-counter.error {
    color: #e74c3c;
    font-weight: 500;
}

/* ===== 无障碍访问增强 ===== */
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: 2px solid var(--gold);
    outline-offset: 2px;
}

.floating-action-button:focus {
    outline: 2px solid var(--gold);
    outline-offset: 2px;
}

.back-button:focus,
.btn:focus {
    outline: 2px solid var(--gold);
    outline-offset: 2px;
}

/* ===== 加载和禁用状态 ===== */
.form-group input:disabled,
.form-group select:disabled,
.form-group textarea:disabled {
    background: #f5f5f5;
    color: var(--text-light);
    cursor: not-allowed;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* ===== 成功状态 ===== */
.form-group input.success,
.form-group select.success,
.form-group textarea.success {
    border-color: #27ae60;
    box-shadow: 0 0 0 3px rgba(39, 174, 96, 0.1);
}

/* ===== 动画增强 ===== */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
    animation: shake 0.3s ease-in-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.field-error {
    animation: fadeInUp 0.3s ease-out;
}

/* ===== 触摸设备优化 ===== */
@media (hover: none) and (pointer: coarse) {
    .form-group input,
    .form-group select,
    .form-group textarea {
        min-height: 44px; /* 确保触摸目标足够大 */
        font-size: 16px; /* 防止iOS缩放 */
    }

    .btn {
        min-height: 44px;
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .floating-action-button {
        width: 56px;
        height: 56px;
    }

    .back-button {
        min-height: 44px;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .upload-placeholder {
        min-height: 120px;
        padding: var(--spacing-xl);
    }

    /* 触摸反馈 */
    .btn.touch-active,
    .back-button.touch-active,
    .upload-placeholder.touch-active {
        transform: scale(0.98);
        opacity: 0.8;
    }
}

/* ===== iOS Safari 特殊优化 ===== */
@supports (-webkit-touch-callout: none) {
    .form-group input,
    .form-group select,
    .form-group textarea {
        -webkit-appearance: none;
        border-radius: 8px;
    }

    .form-group select {
        background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
        background-repeat: no-repeat;
        background-position: right 12px center;
        background-size: 16px;
        padding-right: 40px;
    }
}

/* ===== 高分辨率屏幕优化 ===== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .floating-action-button {
        box-shadow: 0 2px 6px rgba(212, 175, 55, 0.3), 0 1px 4px rgba(0, 0, 0, 0.15);
    }

    .floating-action-button:hover {
        box-shadow: 0 3px 8px rgba(212, 175, 55, 0.4), 0 2px 6px rgba(0, 0, 0, 0.2);
    }
}

/* ===== 暗色模式支持 ===== */
@media (prefers-color-scheme: dark) {
    .add-case-form {
        background: #2a2a2a;
        color: #ffffff;
    }

    .ai-generation-section {
        background: linear-gradient(135deg, #333333 0%, #2a2a2a 100%);
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        background: #333333;
        border-color: #444444;
        color: #ffffff;
    }

    .form-group input::placeholder,
    .form-group textarea::placeholder {
        color: #888888;
    }
}

/* ===== 减少动画偏好支持 ===== */
@media (prefers-reduced-motion: reduce) {
    .floating-action-button,
    .btn,
    .form-group input,
    .form-group select,
    .form-group textarea,
    .upload-placeholder {
        transition: none;
    }

    .floating-action-button:hover i {
        transform: none;
    }

    .generate-btn.loading::after {
        animation: none;
    }

    .form-group input.error,
    .form-group select.error,
    .form-group textarea.error {
        animation: none;
    }
}

/* ===== 打印样式 ===== */
@media print {
    .floating-action-button,
    .form-actions,
    .back-button {
        display: none;
    }

    .add-case-form {
        box-shadow: none;
        border: 1px solid #ccc;
    }

    .ai-section,
    .ai-generation-section {
        border-bottom: 1px solid #ccc;
    }
}

/* ===== 移动端虚拟键盘优化 ===== */
.mobile-device.keyboard-open {
    height: 100vh;
    overflow: hidden;
}

.mobile-device.keyboard-open .floating-action-button {
    display: none; /* 虚拟键盘出现时隐藏浮动按钮 */
}

.mobile-device.keyboard-open .add-case-section {
    padding-bottom: 0;
}

/* ===== 移动端特殊样式 ===== */
.mobile-device .form-group input,
.mobile-device .form-group select,
.mobile-device .form-group textarea {
    -webkit-tap-highlight-color: rgba(212, 175, 55, 0.2);
}

.mobile-device .btn {
    -webkit-tap-highlight-color: rgba(212, 175, 55, 0.3);
}

/* ===== 安全区域适配（iPhone X等） ===== */
@supports (padding: max(0px)) {
    .floating-action-button {
        bottom: max(24px, env(safe-area-inset-bottom));
        right: max(24px, env(safe-area-inset-right));
    }

    .add-case-section {
        padding-left: max(var(--spacing-sm), env(safe-area-inset-left));
        padding-right: max(var(--spacing-sm), env(safe-area-inset-right));
    }

    .form-actions {
        padding-bottom: max(var(--spacing-xl), env(safe-area-inset-bottom));
    }
}