/* 完整CSS代码 */
:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #475569;
    --light-bg: #f8fafc;
    --sidebar-bg: #1e293b;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #06b6d4;
    --dark-bg: #0f172a;
    --dark-card: #1e293b;
    --dark-text: #e2e8f0;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Noto Sans SC', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* 基础样式 - 移动设备优先（默认适用于所有屏幕） */
.layui-container {
    width: 100%;
    padding-left: 15px;
    padding-right: 15px;
    margin-left: auto;
    margin-right: auto;
    box-sizing: border-box;
}

/* 小型平板设备 - 屏幕宽度≥576px */
@media screen and (min-width: 576px) {
    .layui-container {
        width: 400px;
        padding-left: 0;
        padding-right: 0;
    }
}

/* 平板设备 - 屏幕宽度≥768px */
@media screen and (min-width: 768px) {
    .layui-container {
        width: 700px;
    }
}

/* 小型桌面设备 - 屏幕宽度≥992px */
@media screen and (min-width: 992px) {
    .layui-container {
        width: 800px;
    }
}

/* 中型桌面设备 - 屏幕宽度≥1200px */
@media screen and (min-width: 1200px) {
    .layui-container {
    width: 1000px;
    }
}

/* 大型桌面设备 - 屏幕宽度≥1400px */
@media screen and (min-width: 1400px) {
    .layui-container {
        width: 1100px;
    }
}

/* 超大型桌面设备 - 屏幕宽度≥1600px */
@media screen and (min-width: 1600px) {
    .layui-container {
        width: 1300px;
    }
}

@media screen and (max-width: 750px) {
    .line-search-box {
        width: 92%!important;
        margin-left: 4%!important;
    }
    .line-search-box .search-btn{
        top:1px!important;
    }
}

@media screen and (max-width: 1299px) {
    .search-box{
        display: none;
    }
    .line-search-box {
        display: block!important;
    }
}

@media screen and (min-width: 1300px) {
    .search-box{
        width: 25%!important;
    }
}

@media screen and (min-width: 1450px) {
    .search-box{
        width: 35%!important;
    }
}

@media screen and (min-width: 1550px) {
    .search-box{
        width: 40%!important;
    }
}

@media screen and (min-width: 1650px) {
    .search-box{
        width: 45%!important;
    }
}

/* 2K级别设备 - 屏幕宽度≥1920px */
@media screen and (min-width: 1920px) {
    .layui-container {
        width: 1570px;
    }

    .search-box{
        width: 50%!important;
    }
}

/* 您提供的2560px级别规则 - 屏幕宽度≤2560px时生效 */
@media screen and (max-width: 2560px) and (min-width: 2200px) {
    .layui-container {
        width: 2200px;
    }
}

/* 超过2560px的超宽屏设备 */
@media screen and (min-width: 2561px) {
    .layui-container {
        width: 2500px;
    }
}

body {
    background-color: var(--light-bg);
    color: var(--text-dark);
    display: flex;
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

body.dark-mode {
    background-color: var(--dark-bg);
    color: var(--dark-text);
}

/* 侧边栏样式 */
.sidebar {
    width: 280px;
    background: var(--sidebar-bg);
    color: white;
    padding: 20px 0 0;
    height: 100vh;
    position: fixed;
    overflow-y: auto;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    z-index: 100;
    display: flex;
    flex-direction: column;
}

.category-header.active{
    background-color: #334155!important;
}

.sidebar.hidden {
    transform: translateX(-100%);
}

.main-content.full-width {
    margin-left: 0;
}

.logo-container {
    padding: 0 20px 20px;
    border-bottom: 1px solid #334155;
    margin-bottom: 20px;
    position: relative;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo i {
    color: var(--warning);
    background: rgba(245, 158, 11, 0.1);
    padding: 10px;
    border-radius: 10px;
}

.tagline {
    font-size: 0.85rem;
    color: #94a3b8;
    margin-top: 8px;
    padding-left: 10px;
    border-left: 3px solid var(--warning);
}

.categories {
    padding: 0 10px;
    flex: 1;
    overflow-y: auto;
}

.category {
    margin-bottom: 5px;
    border-radius: 8px;
    overflow: hidden;
}

.category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 15px;
    cursor: pointer;
    transition: all 0.2s;
    background: rgba(15, 23, 42, 0.5);
}

.category-header:hover {
    background: #334155;
}

.category-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.category-title i {
    min-width: 20px;
    text-align: center;
    font-size: 16px;
    transition: transform 0.3s;
}

.category-count {
    background: #334155;
    color: #94a3b8;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 20px;
    flex-shrink: 0;
}

.tools-list {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease;
    background: rgba(15, 23, 42, 0.3);
}

.tools-list.active {
    max-height: 500px;
    overflow-y: auto;
}

.tool-item {
    padding: 10px 15px 10px 45px;
    font-size: 13px;
    color: #cbd5e1;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overfit: ellipsis;
    position: relative;
}

.tool-item:before {
    content: "";
    position: absolute;
    left: 30px;
    width: 6px;
    height: 6px;
    background: var(--warning);
    border-radius: 50%;
}

.tool-item:hover {
    background: rgba(30, 41, 59, 0.7);
    color: white;
}

.tool-item.tool-highlight {
    background: rgba(37, 99, 235, 0.15);
    color: white;
    font-weight: 500;
}

/* 侧边栏页脚样式 */
.sidebar-footer {
    margin-top: auto;
    padding: 15px 20px;
    border-top: 1px solid #334155;
    background: rgba(15, 23, 42, 0.5);
}

.sidebar-footer .footer-content {
    text-align: center;
}

.sidebar-footer p {
    margin-bottom: 8px;
    color: #94a3b8;
    font-size: 12px;
}

.sidebar-footer a {
    color: #cbd5e1;
    text-decoration: none;
    font-size: 12px;
}

.sidebar-footer a:hover {
    color: white;
    text-decoration: underline;
}

.sidebar-footer .footer-links {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 10px;
}

/* 主内容区样式 */
.main-content {
    flex: 1;
    margin-left: 280px;
    padding: 30px;
    transition: margin-left 0.3s;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="%23f1f5f9"/><path d="M0 50 L100 50 M50 0 L50 100" stroke="%23e2e8f0" stroke-width="1"/></svg>');
    background-size: 20px 20px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

body.dark-mode .main-content {
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="%230f172a"/><path d="M0 50 L100 50 M50 0 L50 100" stroke="%231e293b" stroke-width="1"/></svg>');
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 20px;
}

body.dark-mode .header {
    border-bottom: 1px solid #334155;
}

.header-content {
    flex: 1;
    min-width: 300px;
}

.page-title {
    font-size: 2.1rem;
    font-weight: 800;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 15px;
}

body.dark-mode .page-title {
    color: var(--dark-text);
}

.page-title i {
    background: var(--primary);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.page-subtitle {
    font-size: 1.05rem;
    color: var(--text-light);
    margin-top: 10px;
    margin-left: 65px;
    max-width: 600px;
}

body.dark-mode .page-subtitle {
    color: #94a3b8;
}

.stats {
    display: flex;
    gap: 15px;
    margin-top: 15px;
    margin-left: 65px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 8px;
    background: #e0f2fe;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 14px;
    color: #075985;
}

body.dark-mode .stat-item {
    background: rgba(30, 64, 175, 0.2);
    color: #93c5fd;
}

.actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.top-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    margin-bottom: 20px;
}

.left-controls {
    display: flex;
    gap: 10px;
}

.right-controls {
    display: flex;
    gap: 10px;
    align-items: center;
}

.btn {
    padding: 12px 20px;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
    border: none;
    font-size: 14px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.08);
}

.btn-sm {
    padding: 8px 15px;
    font-size: 13px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.12);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-dark);
}

body.dark-mode .btn-outline {
    border: 1px solid #334155;
    color: var(--dark-text);
}

.btn-outline:hover {
    background: var(--light-bg);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
}

body.dark-mode .btn-outline:hover {
    background: rgba(30, 41, 59, 0.5);
}

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

.btn-warning:hover {
    background: #e69008;
    transform: translateY(-2px);
}

.btn-dark {
    background: #1e293b;
    color: white;
}

.btn-dark:hover {
    background: #0f172a;
}

.btn-light {
    background-color: #f8f9fa;
    color: #212529;
}

/* 工具卡片网格 */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 20px;
}

.tool-card {
    background: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100%;
}

body.dark-mode .tool-card {
    background: var(--dark-card);
    border: 1px solid #334155;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
}

.tool-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.1);
    border-color: #dbeafe;
}

body.dark-mode .tool-card:hover {
    border-color: #2563eb;
}

.tool-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 15px;
    position: relative;
}

body.dark-mode .tool-header {
    border-bottom: 1px solid #334155;
}

.tool-icon {
    width: 55px;
    height: 55px;
    background: #dbeafe;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 22px;
    flex-shrink: 0;
}

body.dark-mode .tool-icon {
    background: rgba(30, 64, 175, 0.2);
}

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

.tool-name {
    font-weight: 700;
    font-size: 17px;
    margin-bottom: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 8px;
}

body.dark-mode .tool-name {
    color: var(--dark-text);
}

.tool-category {
    font-size: 13px;
    color: var(--text-light);
    background: #f1f5f9;
    padding: 4px 10px;
    border-radius: 20px;
    display: inline-block;
    white-space: nowrap;
}

body.dark-mode .tool-category {
    background: #334155;
    color: #94a3b8;
}

.tool-meta-info {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 5px;
    flex-wrap: wrap;
}

.tool-location {
    font-size: 12px;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 4px;
}

body.dark-mode .tool-location {
    color: #94a3b8;
}

.tool-location i {
    font-size: 11px;
}

.tool-body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.tool-description {
    color: var(--text-light);
    font-size: 14.5px;
    line-height: 1.7;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
}

body.dark-mode .tool-description {
    color: #94a3b8;
}

.tool-meta {
    display: flex;
    justify-content: space-between;
    font-size: 13.5px;
    color: var(--text-light);
    margin-bottom: 5px;
}

body.dark-mode .tool-meta {
    color: #94a3b8;
}

.tool-rating {
    color: var(--warning);
}

.tool-usage {
    display: flex;
    align-items: center;
    gap: 5px;
}

.tool-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

.btn-icon {
    padding: 9px 15px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 7px;
    font-size: 13.5px;
    flex: 1;
    justify-content: center;
    transition: all 0.2s;
}

.btn-icon:hover {
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .sidebar {
        width: 240px;
    }
    .main-content {
        margin-left: 240px;
    }
}

@media (max-width: 992px) {
    .sidebar {
        width: 220px;
    }
    .main-content {
        margin-left: 220px;
    }
    .tools-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 80px;
    }
    .sidebar.active {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
        padding: 20px 0;
    }
    .search-container, .top-actions{
        padding: 0 4%!important;
    }
    .layui-container{padding: 0 1%!important;}
    .menu-toggle {
        display: block !important;
    }
    .page-title {
        font-size: 1.8rem;
    }
    .header {
        flex-direction: column;
        align-items: flex-start;
    }
    .actions {
        width: 100%;
    }
    .top-actions {
        flex-direction: column;
        gap: 15px;
    }
    .left-controls, .right-controls {
        width: 100%;
        justify-content: space-between;
    }
    
    /* 移动端隐藏侧边栏页脚 */
    .sidebar-footer {
        display: none;
    }

    .logo *, .tagline, .category-count, .cat-name{display: none;}
}

.menu-toggle {
    display: none;
    background: var(--primary);
    color: white;
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    font-size: 20px;
    cursor: pointer;
    flex-shrink: 0;
    box-shadow: 0 4px 6px rgba(37, 99, 235, 0.3);
}

/* 分类激活状态 */
.category.active .category-header {
    background: #334155;
}

.category.active .category-header i {
    transform: rotate(90deg);
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #0f172a;
}

::-webkit-scrollbar-thumb {
    background: #334155;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #475569;
}

/* 工具图标颜色 */
.icon-time { color: #3b82f6; }
.icon-daily { color: #10b981; }
.icon-market { color: #f59e0b; }

/* 新增工具标签 */
.new-tag {
    background: var(--success);
    color: white;
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 10px;
    margin-left: 8px;
    font-weight: 500;
}

/* 空状态提示 */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px 20px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

body.dark-mode .empty-state {
    background: #1e293b;
}

.empty-state i {
    font-size: 48px;
    color: var(--text-light);
    margin-bottom: 20px;
}

body.dark-mode .empty-state i {
    color: #64748b;
}

.empty-state h3 {
    margin-bottom: 10px;
    color: var(--text-dark);
}

body.dark-mode .empty-state h3 {
    color: var(--dark-text);
}

.empty-state p {
    color: var(--text-light);
    max-width: 500px;
    margin: 0 auto;
}

body.dark-mode .empty-state p {
    color: #94a3b8;
}

/* 收藏按钮 */
.favorite-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: transparent;
    border: none;
    color: #cbd5e1;
    font-size: 18px;
    cursor: pointer;
    transition: all 0.2s;
    z-index: 10;
}

.favorite-btn:hover {
    color: var(--warning);
}

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

/* 搜索容器 */
.search-container {
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
    margin-top: -68px;
}

.search-box {
    position: relative;
    width: 50%;
}
.line-search-box{
    position: relative;
    width: 100%;
    margin-bottom: 1rem;
    display: none;
}

.search-box input, .line-search-box input {
    width: 100%;
    padding: 13px 15px 13px 50px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: white;
    color: var(--text-dark);
    font-size: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s;
}

.search-box .search-btn, .line-search-box .search-btn{
    width: 5rem;
    position: absolute;
    height: 45px;
    right: 2px;
    top: 2px;
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.text-danger{color: #ff5722}

body.dark-mode .search-box input {
    background: var(--dark-card);
    border: 1px solid #334155;
    color: var(--dark-text);
}

.search-box input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3);
}

.search-box i, .line-search-box i {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
}

body.dark-mode .search-box i {
    color: #94a3b8;
}

.search-stats {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

/* 收藏栏目 */
.favorites-section {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

body.dark-mode .favorites-section {
    border-top: 1px solid #334155;
}

/* 我发布的需求栏目 */
.my-requests-section {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

body.dark-mode .my-requests-section {
    border-top: 1px solid #334155;
}

/* 牛马市集栏目 */
.market-section {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

body.dark-mode .market-section {
    border-top: 1px solid #334155;
}

.section-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.section-header i {
    color: var(--warning);
    font-size: 24px;
}

.section-header h2 {
    font-size: 1.5rem;
    color: var(--text-dark);
}

body.dark-mode .section-header h2 {
    color: var(--dark-text);
}

.social-share {
    display: flex;
    gap: 10px;
}

.social-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 18px;
    cursor: pointer;
    transition: transform 0.2s;
}

.social-btn:hover {
    transform: translateY(-3px);
}

.wechat { background: #2aae67; }
.weibo { background: #e6162d; }
.qq { background: #12b7f5; }
.douban { background: #072; }

/* 发布需求表单样式 */
.publish-form-section {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

body.dark-mode .publish-form-section {
    border-top: 1px solid #334155;
}

.form-container {
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    border: 1px solid var(--border-color);
    padding: 30px;
    margin-bottom: 30px;
}

body.dark-mode .form-container {
    background: var(--dark-card);
    border: 1px solid #334155;
}

.form-header {
    margin-bottom: 25px;
}

.form-header h2 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--text-dark);
}

body.dark-mode .form-header h2 {
    color: var(--dark-text);
}

.form-header p {
    color: var(--text-light);
    font-size: 1rem;
}

body.dark-mode .form-header p {
    color: #94a3b8;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-dark);
}

body.dark-mode .form-group label {
    color: var(--dark-text);
}

.form-group .required {
    color: var(--danger);
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    transition: all 0.3s;
    background: white;
    color: var(--text-dark);
}

body.dark-mode .form-control {
    background: #1e293b;
    border: 1px solid #334155;
    color: var(--dark-text);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.2);
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

.radio-group {
    display: flex;
    gap: 20px;
    margin-top: 5px;
}

.radio-option {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
}

.radio-option input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 15px;
    margin-top: 10px;
}

.category-card {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    background: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100px;
}

body.dark-mode .category-card {
    background: #1e293b;
    border: 1px solid #334155;
}

.category-card:hover {
    border-color: var(--primary);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08);
}

.category-card.selected {
    border-color: var(--primary);
    background: rgba(37, 99, 235, 0.05);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

body.dark-mode .category-card.selected {
    background: rgba(37, 99, 235, 0.1);
}

.category-card i {
    font-size: 24px;
    margin-bottom: 8px;
    color: var(--primary);
}

.category-card span {
    font-size: 14px;
    color: var(--text-dark);
    font-weight: 500;
    margin-bottom: 4px;
}

body.dark-mode .category-card span {
    color: var(--dark-text);
}

.category-card small {
    font-size: 12px;
    color: var(--text-light);
    line-height: 1.3;
}

body.dark-mode .category-card small {
    color: #94a3b8;
}

/* 地区选择器样式 */
.location-selectors {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

/* 需求卡片样式 */
.demand-card {
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 6px极简的15px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    border: 1px solid var(--border-color);
    padding: 20px;
    margin-bottom: 20px;
    transition: all 0.3s;
}

body.dark-mode .demand-card {
    background: var(--dark-card);
    border: 1px solid #334155;
}

.demand-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.1);
}

.demand-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 15px;
}

.demand-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 5px;
}

body.dark-mode .demand-title {
    color: var(--dark-text);
}

.demand-type {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 10px;
}

.demand-type.buy {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.demand-type.sell {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.demand-meta-info {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 5px;
    flex-wrap: wrap;
}

.demand-category {
    font-size: 13px;
    color: var(--text-light);
    background: #f1f5f9;
    padding: 4px 10px;
    border-radius: 20px;
    display: inline-block;
}

body.dark-mode .demand-category {
    background: #334155;
    color: #94a3b8;
}

.demand-location {
    font-size: 12px;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 4px;
}

body.dark-mode .demand-location {
    color: #94a3b8;
}

.demand-location i {
    font-size: 11px;
}

.demand-description {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 15px;
}

body.dark-mode .demand-description {
    color: #94a3b8;
}

.demand-meta {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 15px;
}

body.dark-mode .demand-meta {
    color: #94a3b8;
}

.demand-budget {
    font-weight: 600;
    color: var(--success);
}

.demand-deadline {
    display: flex;
    align-items: center;
    gap: 5px;
}

.demand-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 15px;
}

.demand-tag {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    padding: 极简的4px 10px;
    border-radius: 20px;
    font-size: 12px;
}

.demand-actions {
    display: flex;
    gap: 10px;
}

.contact-lock {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--warning);
    font-size: 14px;
    margin-top: 10px;
}

.contact-info {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px极简的 solid var(--border-color);
}

body.dark-mode极简的 .contact-info {
    border-top: 1px solid #334155;
}

.contact-info p {
    margin-bottom: 5px;
    color: var(--text-light);
}

body.dark-mode .contact-info p {
    color: #94a3b8;
}

.contact-value {
    font-weight: 500;
    color: var(--text-dark);
}

body.dark-mode .contact-value {
    color: var(--dark-text);
}

/* 表单操作按钮样式 */
.form-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

body.dark-mode .form-actions {
    border-top: 1px solid #334155;
}

/* 示例提示样式 */
.example-note {
    background: rgba(59, 130, 246, 0.1);
    border-left: 4px solid var(--primary);
    padding: 12px 15px;
    margin: 15px;
    border-radius: 4px;
    font-size: 14px;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 8px;
}

body.dark-mode .example-note {
    background: rgba(59, 130, 246, 0.15);
    color: #94a3b8;
}

.example-note i {
    color: var(--primary);
}




/* layui深色模式样式 - 所有规则均以 "body.dark-mode " 为前缀（注意空格） */

/* 全局背景与文字 */
body.dark-mode {
    background-color: var(--dark-bg) !important;
    color: var(--dark-text) !important;
}

/* 容器样式 */
body.dark-mode .layui-container {
    background-color: var(--dark-bg) !important;
}

/* 卡片组件 */
body.dark-mode .layui-card {
    background-color: var(--dark-card) !important;
    border-color: var(--border-color) !important;
}
body.dark-mode .layui-card-header {
    background-color: var(--dark-card) !important;
    color: var(--dark-text) !important;
    border-bottom-color: var(--border-color) !important;
}
body.dark-mode .layui-card-body {
    color: var(--dark-text) !important;
}

/* 按钮样式 */
body.dark-mode .layui-btn {
    background-color: var(--primary) !important;
    color: #fff !important;
    border-color: var(--primary) !important;
}
body.dark-mode .layui-btn:hover {
    background-color: var(--primary-dark) !important;
    border-color: var(--primary-dark) !important;
}
body.dark-mode .layui-btn-primary {
    background-color: var(--dark-card) !important;
    color: var(--dark-text) !important;
    border-color: var(--border-color) !important;
}
body.dark-mode .layui-btn-primary:hover {
    background-color: var(--sidebar-bg) !important;
}

/* 表单元素 */
body.dark-mode .layui-form-label {
    color: var(--dark-text) !important;
}
body.dark-mode .layui-input,
body.dark-mode .layui-textarea,
body.dark-mode .layui-select {
    background-color: var(--dark-card) !important;
    color: var(--dark-text) !important;
    border-color: var(--border-color) !important;
}
body.dark-mode .layui-input:focus,
body.dark-mode .layui-textarea:focus {
    border-color: var(--primary) !important;
}
body.dark-mode .layui-form-select dl {
    background-color: var(--dark-card) !important;
    border-color: var(--border-color) !important;
}
body.dark-mode .layui-form-select dl dd {
    color: var(--dark-text) !important;
}
body.dark-mode .layui-form-select dl dd:hover {
    background-color: var(--sidebar-bg) !important;
}

/* 复选框与单选框 */
body.dark-mode .layui-form-checkbox span {
    color: var(--dark-text) !important;
}
body.dark-mode .layui-form-radio span {
    color: var(--dark-text) !important;
}

/* 表格样式 */
body.dark-mode .layui-table {
    background-color: var(--dark-card) !important;
    color: var(--dark-text) !important;
    border-color: var(--border-color) !important;
}
body.dark-mode .layui-table th {
    background-color: var(--sidebar-bg) !important;
    color: var(--dark-text) !important;
    border-color: var(--border-color) !important;
}
body.dark-mode .layui-table tr {
    border-color: var(--border-color) !important;
}
body.dark-mode .layui-table tr:hover {
    background-color: var(--sidebar-bg) !important;
}
body.dark-mode .layui-table td {
    border-color: var(--border-color) !important;
}

/* 分页组件 */
body.dark-mode .layui-laypage a,
body.dark-mode .layui-laypage span {
    background-color: var(--dark-card) !important;
    color: var(--dark-text) !important;
    border-color: var(--border-color) !important;
}
body.dark-mode .layui-laypage .layui-laypage-curr .layui-laypage-em {
    background-color: var(--primary) !important;
}

/* 过渡动画（平滑切换） */
body.dark-mode *,
body:not(.dark-mode) * {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

body.dark-mode .layui-card-body a{
    color: var(--primary);
}

.layui-card-header h1{font-size: 16px;margin-top: -10px;font-weight: bold;}