/* ============================================
   大灰宏网站 - 现代化中国大陆风格样式
   基于网站总规划中的配色方案
   ============================================ */

/* ========== 全局变量与基础样式 ========== */
:root {
    /* 主色调 */
    --primary-color: #2C3E50;
    --primary-dark: #34495E;
    
    /* 辅助色 */
    --accent-orange: #FF6B35;
    --accent-orange-light: #FF8C42;
    --tech-blue: #3498DB;
    --tech-blue-dark: #2980B9;
    
    /* 中性色 */
    --bg-white: #FFFFFF;
    --bg-light: #F8F9FA;
    --text-dark: #2C3E50;
    --text-medium: #5D6D7E;
    --text-light: #95A5A6;
    --border-light: #E5E7EB;
    --border-medium: #D1D5DB;
    
    /* 功能色 */
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --info: #3B82F6;
    
    /* 阴影 */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-hover: 0 6px 20px rgba(0, 0, 0, 0.15);
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* 过渡动画 */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== 基础重置 ========== */
html {
    position: relative;
    min-height: 100%;
    font-size: 14px;
    scroll-behavior: smooth;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: var(--text-dark);
    background-color: var(--bg-light);
    line-height: 1.6;
    margin-bottom: 0;
}

/* ========== 导航栏样式 ========== */
header {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15), 0 1px 2px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    isolation: isolate;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* 确保右侧导航（登录/注册）始终可见且可点击 */
.navbar-collapse .navbar-nav:last-child {
    flex-shrink: 0;
}

.navbar-collapse .navbar-nav:last-child .nav-item {
    position: relative;
    z-index: 10;
}

.navbar {
    padding: 0.75rem 0;
    background: transparent !important;
    border-bottom: none !important;
    min-height: 70px;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--bg-white) !important;
    text-decoration: none;
    transition: var(--transition);
    padding: 0.5rem 0 !important;
    display: flex;
    align-items: center;
    background: transparent !important;
    background-color: transparent !important;
    border: none !important;
    box-shadow: none !important;
}

.navbar-brand:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    background: transparent !important;
    background-color: transparent !important;
}

.navbar-brand:focus {
    background: transparent !important;
    background-color: transparent !important;
}

.navbar-logo {
    height: 56px;
    width: auto;
    max-width: 240px;
    object-fit: contain;
    transition: var(--transition);
    display: block;
    background: transparent !important;
    background-color: transparent !important;
    border: none !important;
    padding: 0 !important;
    margin: 0 !important;
    box-shadow: none !important;
}

.navbar-logo:hover {
    opacity: 0.9;
    transform: scale(1.02);
}

@media (max-width: 992px) {
    .navbar-logo {
        height: 48px;
        max-width: 200px;
    }
}

@media (max-width: 768px) {
    .navbar-logo {
        height: 40px;
        max-width: 180px;
    }
}

@media (max-width: 576px) {
    .navbar-logo {
        height: 36px;
        max-width: 160px;
    }
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.9) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    margin: 0 0.25rem;
    border-radius: var(--radius-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    cursor: pointer;
    pointer-events: auto;
    z-index: 10;
    display: inline-block;
    text-decoration: none;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-orange), var(--tech-blue));
    transition: all 0.3s ease;
    transform: translateX(-50%);
    border-radius: 2px;
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    width: 80%;
}

.navbar-nav .nav-link:hover {
    color: var(--bg-white) !important;
    background-color: rgba(255, 255, 255, 0.08);
    transform: translateY(-1px);
    text-decoration: none;
}

.navbar-nav .nav-link.active {
    color: var(--bg-white) !important;
    background-color: rgba(255, 255, 255, 0.12);
}

/* 确保所有导航链接可点击 */
.navbar-nav .nav-link:not(.dropdown-toggle) {
    pointer-events: auto !important;
}

/* 确保会员中心链接可点击 */
.navbar-nav .nav-item:has(a[href*="/User/Index"]) .nav-link:not(.dropdown-toggle) {
    pointer-events: auto !important;
    cursor: pointer !important;
    z-index: 100 !important;
}

/* 确保登录、注册按钮可点击 */
.navbar-nav .nav-auth-link,
.navbar-nav .nav-item a[href*="/Auth/Login"],
.navbar-nav .nav-item a[href*="/Auth/Register"] {
    pointer-events: auto !important;
    cursor: pointer !important;
    z-index: 100 !important;
    position: relative !important;
}

/* 登录按钮 - 柔和悬停（淡橙高亮，避免一片白） */
.navbar-nav .nav-auth-link.nav-link:not(.btn) {
    color: rgba(255, 255, 255, 0.95) !important;
}

.navbar-nav .nav-auth-link.nav-link:not(.btn):hover {
    color: var(--bg-white) !important;
    background: rgba(255, 107, 53, 0.25) !important;
    box-shadow: 0 0 0 1px rgba(255, 107, 53, 0.3);
}

/* 注册按钮 - 橙色渐变悬停，更醒目 */
.navbar-nav .nav-auth-link.btn-outline-light {
    border: 1px solid rgba(255, 255, 255, 0.5);
    color: var(--bg-white) !important;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar-nav .nav-auth-link.btn-outline-light:hover {
    background: linear-gradient(135deg, var(--accent-orange) 0%, var(--accent-orange-light) 100%) !important;
    border-color: transparent !important;
    color: var(--bg-white) !important;
    box-shadow: 0 4px 16px rgba(255, 107, 53, 0.4);
    transform: translateY(-2px);
}

.navbar-toggler {
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 0.25rem 0.5rem;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28255, 255, 255, 0.9%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* 用户导航下拉菜单 */
.dropdown-menu {
    border: none;
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    padding: 0.5rem 0;
    margin-top: 0.5rem;
}

.dropdown-item {
    padding: 0.75rem 1.5rem;
    transition: var(--transition);
    color: var(--text-dark);
}

.dropdown-item:hover {
    background-color: var(--bg-light);
    color: var(--accent-orange);
}

/* 退出登录按钮样式 */
.dropdown-item button[type="submit"] {
    pointer-events: auto !important;
    cursor: pointer !important;
    width: 100%;
    text-align: left;
}

.dropdown-item button[type="submit"]:hover {
    background-color: var(--bg-light);
    color: var(--accent-orange);
}

/* 导航栏中的按钮样式（通用，nav-auth-link 有单独样式） */
.navbar .btn-outline-light:not(.nav-auth-link) {
    border: 2px solid rgba(255, 255, 255, 0.5);
    color: var(--bg-white);
    background: transparent;
    padding: 0.375rem 1rem;
    font-size: 0.875rem;
    margin-left: 0.5rem;
}

.navbar .btn-outline-light:not(.nav-auth-link):hover {
    background: var(--bg-white);
    color: var(--primary-color);
    border-color: var(--bg-white);
}

/* ========== 主要内容区域 ========== */
.container {
    max-width: 1200px;
}

main {
    padding: 2rem 0 4rem;
    min-height: calc(100vh - 200px);
}

/* ========== 卡片样式 ========== */
.card {
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    background: var(--bg-white);
    margin-bottom: 1.5rem;
}

.card:hover {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
    transform: translateY(-8px);
    border-color: transparent;
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--bg-white);
    border: none;
    padding: 1rem 1.5rem;
    font-weight: 600;
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.card-text {
    color: var(--text-medium);
    margin-bottom: 1rem;
}

/* ========== 按钮样式 ========== */
.btn {
    border-radius: var(--radius-md);
    padding: 0.625rem 1.5rem;
    font-weight: 500;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-orange) 0%, var(--accent-orange-light) 100%);
    color: var(--bg-white);
    box-shadow: 0 4px 12px rgba(255, 107, 53, 0.25);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--accent-orange-light) 0%, var(--accent-orange) 100%);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.35);
    transform: translateY(-2px);
    color: var(--bg-white);
}

.btn-secondary {
    background-color: var(--tech-blue);
    color: var(--bg-white);
}

.btn-secondary:hover {
    background-color: var(--tech-blue-dark);
    color: var(--bg-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline-primary {
    border: 2px solid var(--accent-orange);
    color: var(--accent-orange);
    background: transparent;
}

.btn-outline-primary:hover {
    background: var(--accent-orange);
    color: var(--bg-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn:focus, .btn:active:focus {
    box-shadow: 0 0 0 0.2rem rgba(255, 107, 53, 0.25);
    outline: none;
}

/* ========== 列表样式 ========== */
.list-group {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.list-group-item {
    border: none;
    border-bottom: 1px solid var(--border-light);
    padding: 1.25rem 1.5rem;
    transition: var(--transition);
    background: var(--bg-white);
}

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

.list-group-item:hover {
    background-color: var(--bg-light);
    transform: translateX(4px);
}

.list-group-item a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.list-group-item a:hover {
    color: var(--accent-orange);
}

/* ========== 标题样式 ========== */
h1, h2, h3, h4, h5, h6 {
    color: var(--text-dark);
    font-weight: 600;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
}

h2 {
    font-size: 2rem;
    font-weight: 600;
}

.display-4 {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-orange) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

/* ========== 首页特色区域 ========== */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 50%, var(--tech-blue) 100%);
    color: var(--bg-white);
    padding: 4rem 0;
    margin: -2rem 0 3rem;
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.hero-section h1 {
    color: var(--bg-white);
    margin-bottom: 1rem;
}

.hero-section p {
    font-size: 1.25rem;
    opacity: 0.95;
    margin-bottom: 2rem;
}

.feature-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.feature-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border-top: 4px solid var(--accent-orange);
}

.feature-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-6px);
    border-top-color: var(--tech-blue);
}

.feature-card h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-medium);
    margin-bottom: 1.5rem;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

/* ========== 首页三大版块 ========== */
.home-section {
    margin-top: 3rem;
}

.home-section:first-of-type {
    margin-top: 2rem;
}

.home-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--border-light);
}

.home-section-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
}

.home-section-title i {
    color: var(--accent-orange);
    margin-right: 0.35rem;
}

.home-section-more {
    color: var(--tech-blue);
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
}

.home-section-more:hover {
    color: var(--accent-orange);
}

.home-grid {
    margin-top: 0;
}

.home-empty {
    padding: 2rem;
    text-align: center;
    margin: 0;
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

/* ========== 网格布局 ========== */
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

/* ========== 表单样式 ========== */
.form-control {
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    transition: var(--transition);
    font-size: 1rem;
}

.form-control:focus {
    border-color: var(--accent-orange);
    box-shadow: 0 0 0 0.2rem rgba(255, 107, 53, 0.15);
    outline: none;
}

.form-label {
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

/* ========== 页脚样式（深底与 CTA 区分，形成自然过渡） ========== */
.site-footer,
footer {
    background: #1a1f26;
    color: rgba(255, 255, 255, 0.92);
    padding: 2rem 0;
    margin-top: 4rem;
    font-size: 0.9375rem;
    line-height: 1.5;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.08);
}

.footer-row {
    min-height: 3rem;
}

.footer-copy {
    margin: 0 0 0.25rem 0;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.95);
}

.footer-tagline {
    margin: 0;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.88);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-orange-light);
}

.footer-sep {
    margin: 0 0.5rem;
    color: rgba(255, 255, 255, 0.4);
    user-select: none;
}

footer a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: var(--transition);
}

footer a:hover {
    color: var(--accent-orange-light);
}

/* ========== 卡片内按钮样式 ========== */
.card-content .btn {
    margin-top: auto;
}

.w-100 {
    width: 100%;
}

/* ========== 响应式设计 ========== */
@media (max-width: 768px) {
    .display-4 {
        font-size: 2rem;
    }
    
    .hero-section {
        padding: 2rem 0;
        margin: -2rem -15px 2rem;
        border-radius: 0;
    }
    
    .hero-section p {
        font-size: 1rem;
    }
    
    .hero-section .btn-lg {
        padding: 0.5rem 1rem;
        font-size: 0.875rem;
    }
    
    .feature-cards {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .grid-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .navbar-nav {
        margin-top: 1rem;
    }
    
    .navbar-nav .nav-link {
        padding: 0.75rem 1rem !important;
    }
    
    .navbar .btn-outline-light {
        margin-left: 0;
        margin-top: 0.5rem;
        width: 100%;
    }
    
    main {
        padding: 1rem 0 3rem;
    }
    
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }
}

/* ========== 工具类 ========== */
.text-center {
    text-align: center;
}

.mt-4 {
    margin-top: 2rem;
}

.mt-3 {
    margin-top: 1rem;
}

.mb-3 {
    margin-bottom: 1rem;
}

.pb-3 {
    padding-bottom: 1rem;
}

/* ========== 动画效果 ========== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

/* ========== 页面头部样式 ========== */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 3rem 0;
    margin-bottom: 3rem;
    border-radius: 0 0 var(--radius-xl) var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.page-header-content {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    color: white;
}

.page-header-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    flex-shrink: 0;
    backdrop-filter: blur(10px);
}

.page-header-text h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: white;
}

.page-header-text p {
    font-size: 1.125rem;
    opacity: 0.9;
    margin: 0;
}

/* ========== 空状态样式 ========== */
.empty-state {
    text-align: center;
    padding: 6rem 2rem;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin: 3rem 0;
}

.empty-state-icon {
    font-size: 5rem;
    color: var(--text-light);
    margin-bottom: 1.5rem;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.empty-state p {
    font-size: 1rem;
    color: var(--text-medium);
    margin: 0;
    line-height: 1.6;
}

/* ========== 卡片样式增强 ========== */
.resource-card, .course-card, .tool-card, .blog-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-light);
    position: relative;
}

.resource-card:hover, .course-card:hover, .tool-card:hover, .blog-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-8px);
    border-color: var(--accent-orange);
}

.card-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--tech-blue) 0%, var(--accent-orange) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-white);
    font-size: 3rem;
    position: relative;
    overflow: hidden;
}

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

.card-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.3) 0%, rgba(255, 107, 53, 0.3) 100%);
    z-index: 1;
}

.card-image .icon-fallback {
    position: relative;
    z-index: 2;
}

.card-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.card-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
    font-weight: 600;
    line-height: 1.4;
}

.card-content h3 a {
    color: var(--text-dark);
    text-decoration: none;
    transition: var(--transition);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-content h3 a:hover {
    color: var(--accent-orange);
}

.card-text {
    font-size: 0.95rem;
    color: var(--text-medium);
    line-height: 1.6;
    margin-bottom: 1rem;
    flex-grow: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-light);
    margin-top: auto;
    padding-top: 1rem;
    border-top: 1px solid var(--border-light);
}

.card-price {
    color: var(--accent-orange);
    font-size: 1.75rem;
    font-weight: 700;
    margin-top: auto;
    padding-top: 1rem;
}

.card-price .price-label {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--text-medium);
    margin-right: 0.25rem;
}

.card-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.75rem;
    font-weight: 500;
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success);
}

/* ========== 分页样式增强 ========== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 3rem;
    padding: 2rem 0;
}

.pagination a, .pagination span {
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-dark);
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    font-weight: 500;
    min-width: 44px;
    text-align: center;
    border: 1px solid var(--border-light);
}

.pagination a:hover {
    background: linear-gradient(135deg, var(--accent-orange) 0%, var(--accent-orange-light) 100%);
    color: var(--bg-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-orange);
}

.pagination span {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--bg-white);
    border-color: var(--primary-color);
}

@media (max-width: 768px) {
    .page-header {
        padding: 2rem 0;
        margin-bottom: 2rem;
    }

    .page-header-content {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .page-header-icon {
        width: 60px;
        height: 60px;
        font-size: 2rem;
    }

    .page-header-text h1 {
        font-size: 2rem;
    }

    .page-header-text p {
        font-size: 1rem;
    }

    .empty-state {
        padding: 4rem 1.5rem;
    }

    .empty-state-icon {
        font-size: 4rem;
    }
}

/* ========== 用户中心样式 ========== */
.user-center-container {
    background-color: var(--bg-light);
    min-height: calc(100vh - 200px);
    padding: 2rem 0;
}

/* 左侧导航栏 */
.user-sidebar {
    position: sticky;
    top: 100px;
}

.user-info-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    color: white;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-md);
}

.user-avatar {
    margin-bottom: 1rem;
}

.avatar-img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    border: 3px solid rgba(255, 255, 255, 0.3);
    object-fit: cover;
}

.avatar-placeholder {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    font-size: 4rem;
    color: rgba(255, 255, 255, 0.8);
}

.user-name {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: white;
}

.user-greeting {
    font-size: 0.9rem;
    opacity: 0.9;
    margin: 0;
}

.user-nav {
    background: white;
    border-radius: var(--radius-lg);
    padding: 0.5rem;
    box-shadow: var(--shadow-sm);
}

.nav-item {
    display: flex;
    align-items: center;
    padding: 0.875rem 1rem;
    color: var(--text-dark);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: var(--transition);
    margin-bottom: 0.25rem;
    font-weight: 500;
}

.nav-item i {
    font-size: 1.25rem;
    margin-right: 0.75rem;
    width: 24px;
    text-align: center;
}

.nav-item:hover {
    background-color: var(--bg-light);
    color: var(--accent-orange);
    transform: translateX(4px);
}

.nav-item.active {
    background: linear-gradient(135deg, var(--accent-orange) 0%, var(--accent-orange-light) 100%);
    color: white;
}

.nav-item.active:hover {
    background: linear-gradient(135deg, var(--accent-orange-light) 0%, var(--accent-orange) 100%);
    color: white;
}

.nav-item-danger {
    color: var(--error);
}

.nav-item-danger:hover {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--error);
}

.nav-divider {
    height: 1px;
    background-color: var(--border-light);
    margin: 0.5rem 0;
}

/* 右侧内容区域 */
.user-content {
    padding-left: 1.5rem;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.page-title i {
    color: var(--accent-orange);
}

.page-subtitle {
    color: var(--text-medium);
    margin: 0;
}

@media (max-width: 992px) {
    .user-content {
        padding-left: 0;
        margin-top: 1.5rem;
    }

    .user-sidebar {
        position: relative;
        top: 0;
    }
}

@media (max-width: 768px) {
    .user-center-container {
        padding: 1rem 0;
    }
}