/* 金材之巅论坛样式 */
:root {
    --forum-primary: #667eea;
    --forum-secondary: #764ba2;
    --forum-accent: #f59e0b;
    --forum-success: #10b981;
    --forum-danger: #ef4444;
    --forum-warning: #f59e0b;
    --forum-info: #3b82f6;
    
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-hover: rgba(0, 0, 0, 0.05);
    
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --border-color: rgba(0, 0, 0, 0.1);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.15);
    
    /* Ailoy Lab 主题色 */
    --neon-blue: #3b82f6;
    --neon-purple: #8b5cf6;
    --neon-pink: #ec4899;
    --dark-bg: #ffffff;
    --border-glow: rgba(59, 130, 246, 0.3);
}

/* ==================== 页眉和导航栏样式 ==================== */

/* 强制覆盖页眉和导航栏为白色清新风格 */
.header,
.header.scrolled {
    background: rgba(255, 255, 255, 0.98) !important;
    background-color: rgba(255, 255, 255, 0.98) !important;
    backdrop-filter: blur(20px) !important;
    -webkit-backdrop-filter: blur(20px) !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1) !important;
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.08) !important;
    transition: all 0.3s ease;
}

.nav,
.nav.scrolled {
    background: rgba(255, 255, 255, 0.98) !important;
    background-color: rgba(255, 255, 255, 0.98) !important;
    backdrop-filter: blur(20px) !important;
    -webkit-backdrop-filter: blur(20px) !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1) !important;
    transition: all 0.3s ease;
}

.nav.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1) !important;
}

/* Logo 效果 */
.logo-img {
    filter: none;
}

/* 导航链接样式 */
.daohang > li > a {
    color: #1e293b !important;
    text-shadow: none;
    background: transparent !important;
}

.daohang > li > a:hover {
    color: var(--neon-blue) !important;
    text-shadow: none;
}

.daohang > li > a.active {
    color: var(--neon-blue) !important;
}

.daohang > li > a::after {
    background: var(--neon-blue);
    box-shadow: none;
}

/* 下拉菜单样式 */
.nav .daohang .nav_item {
    background: rgba(255, 255, 255, 0.98) !important;
    border: 1px solid rgba(0, 0, 0, 0.1) !important;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15) !important;
    backdrop-filter: blur(20px);
}

.nav .daohang .nav_item li a {
    color: #1e293b !important;
    background: transparent !important;
    transition: all 0.3s ease;
}

.nav .daohang .nav_item li a:hover {
    color: var(--neon-blue) !important;
    background: rgba(59, 130, 246, 0.1) !important;
    text-shadow: none;
}

/* 搜索框样式 */
.search-container {
    background: rgba(0, 0, 0, 0.05) !important;
    border: 1px solid rgba(0, 0, 0, 0.1) !important;
}

.search-input {
    background: transparent !important;
    color: #1e293b !important;
}

.search-input::placeholder {
    color: #94a3b8 !important;
}

.search-button {
    color: #475569 !important;
}

.search-button:hover {
    background: var(--neon-blue) !important;
    color: white !important;
}

/* 语言切换器样式 */
.language-switcher {
    background: rgba(0, 0, 0, 0.05) !important;
    border: 1px solid rgba(0, 0, 0, 0.1) !important;
}

.lang-btn {
    color: #475569 !important;
}

.lang-btn:hover {
    color: #1e293b !important;
}

.lang-btn.active {
    background: var(--neon-blue) !important;
    color: white !important;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

/* 汉堡菜单样式 */
.navbar-toggle .icon-bar {
    background: #1e293b !important;
}

/* 强制覆盖所有可能的背景设置 */
.header *,
.header .container,
.header .container *,
.nav *,
.nav .container,
.nav .container * {
    background-color: transparent !important;
}

.header {
    background: rgba(255, 255, 255, 0.98) !important;
}

.nav {
    background: rgba(255, 255, 255, 0.98) !important;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .header,
    .header.scrolled {
        background: rgba(255, 255, 255, 0.98) !important;
        backdrop-filter: blur(20px);
    }

    .nav,
    .nav.scrolled {
        background: rgba(255, 255, 255, 0.98) !important;
        backdrop-filter: blur(20px);
    }

    .nav.nav-open {
        background: rgba(255, 255, 255, 0.98) !important;
    }

    .nav.nav-open .daohang {
        background: rgba(255, 255, 255, 0.98) !important;
    }

    .nav .daohang > li > a {
        background: transparent !important;
        color: #1e293b !important;
        border-bottom: 1px solid rgba(0, 0, 0, 0.1) !important;
    }

    .nav .daohang .nav_item {
        background: rgba(255, 255, 255, 0.98) !important;
        border: 1px solid rgba(0, 0, 0, 0.1) !important;
        backdrop-filter: blur(20px);
    }
}

/* ==================== 论坛主体样式 ==================== */

body.day-mode {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.95);
    --bg-hover: rgba(0, 0, 0, 0.03);
    
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --border-color: rgba(0, 0, 0, 0.1);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Microsoft YaHei', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: all 0.3s ease;
}

/* 容器布局 */
.forum-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 20px;
    display: grid;
    grid-template-columns: 280px minmax(600px, 1fr) 360px;
    gap: 24px;
    min-height: calc(100vh - 200px);
}

/* 左侧边栏 */
.forum-sidebar-left {
    position: sticky;
    top: 20px;
    height: fit-content;
    grid-column: 1; /* 明确指定为第1列 */
}

.sidebar-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.sidebar-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.sidebar-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.board-list {
    list-style: none;
}

.board-item {
    display: flex;
    align-items: center;
    padding: 12px 14px;
    margin-bottom: 8px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--text-secondary);
    text-decoration: none;
}

.board-item:hover {
    background: var(--bg-hover);
    transform: translateX(5px);
}

.board-item.active {
    background: linear-gradient(135deg, var(--forum-primary), var(--forum-secondary));
    color: white;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.board-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    margin-right: 12px;
    font-size: 1rem;
}

.board-info {
    flex: 1;
}

.board-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.board-count {
    font-size: 0.75rem;
    opacity: 0.7;
    margin-top: 2px;
}

/* 主内容区 */
.forum-main {
    min-height: 600px;
    grid-column: 2; /* 明确指定为第2列 */
}

.forum-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    padding: 20px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.forum-title-section h1 {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--forum-primary), var(--forum-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.forum-subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

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

.btn {
    padding: 12px 24px;
    border-radius: 12px;
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    font-size: 0.95rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--forum-primary), var(--forum-secondary));
    color: white;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-hover);
}

/* 筛选栏 */
.forum-filters {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding: 16px 20px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.filter-tabs {
    display: flex;
    gap: 8px;
}

.filter-tab {
    padding: 8px 16px;
    border-radius: 8px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
}

.filter-tab:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.filter-tab.active {
    background: linear-gradient(135deg, var(--forum-primary), var(--forum-secondary));
    color: white;
}

/* 帖子列表 */
.post-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.post-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    padding: 24px;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.post-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(180deg, var(--forum-primary), var(--forum-secondary));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.post-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--forum-primary);
}

.post-card:hover::before {
    opacity: 1;
}

.post-card.pinned {
    border-color: var(--forum-warning);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(245, 158, 11, 0.05));
}

.post-card.featured {
    border-color: var(--forum-success);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.05));
}

.post-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 16px;
}

.post-author-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--forum-primary), var(--forum-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.1rem;
    overflow: hidden;
    flex-shrink: 0;
}

.author-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.author-details {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.author-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    background: linear-gradient(135deg, var(--forum-primary), var(--forum-secondary));
    color: white;
}

.post-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 8px;
}

.post-badges {
    display: flex;
    gap: 6px;
}

.post-badge {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.badge-pinned {
    background: rgba(245, 158, 11, 0.2);
    color: var(--forum-warning);
    border: 1px solid var(--forum-warning);
}

.badge-featured {
    background: rgba(16, 185, 129, 0.2);
    color: var(--forum-success);
    border: 1px solid var(--forum-success);
}

.post-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
    line-height: 1.4;
}

.post-content {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.8;
    max-height: 120px;
    overflow: hidden;
    position: relative;
}

.post-content.expanded {
    max-height: none;
}

.post-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.tag {
    padding: 4px 12px;
    border-radius: 6px;
    background: var(--bg-hover);
    color: var(--text-secondary);
    font-size: 0.85rem;
    transition: all 0.2s ease;
    border: 1px solid var(--border-color);
}

.tag:hover {
    background: var(--forum-primary);
    color: white;
    border-color: var(--forum-primary);
}

.post-stats {
    display: flex;
    gap: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: all 0.2s ease;
    cursor: pointer;
}

.stat-item:hover {
    color: var(--forum-primary);
}

.stat-item i {
    font-size: 1rem;
}

/* 右侧边栏 */
.forum-sidebar-right {
    position: sticky;
    top: 20px;
    height: fit-content;
    grid-column: 3; /* 明确指定为第3列 */
}

.user-card {
    text-align: center;
}

.user-card .author-avatar {
    width: 80px;
    height: 80px;
    margin: 0 auto 16px;
    font-size: 2rem;
}

.user-card .user-name {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.user-card .user-role {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.user-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 16px;
}

.user-stat {
    text-align: center;
}

.user-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--forum-primary);
}

.user-stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* 热门标签 */
.popular-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

/* 加载更多 */
.load-more {
    text-align: center;
    padding: 30px;
}

.load-more-btn {
    padding: 12px 32px;
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
}

.load-more-btn:hover {
    background: var(--forum-primary);
    color: white;
    border-color: var(--forum-primary);
}

/* 响应式设计 */

/* 超大屏幕 - 完整三栏布局，更平衡的比例 */
@media (min-width: 1441px) {
    .forum-container {
        max-width: 1800px;
        grid-template-columns: 300px minmax(700px, 1fr) 400px;
        gap: 30px;
    }
}

/* 大屏幕 - 完整三栏布局 */
@media (min-width: 1201px) and (max-width: 1440px) {
    .forum-container {
        grid-template-columns: 280px minmax(600px, 1fr) 360px;
        gap: 24px;
    }
}

/* 中等屏幕 - 隐藏左侧栏，保留右侧栏 */
@media (max-width: 1200px) and (min-width: 969px) {
    .forum-container {
        grid-template-columns: minmax(500px, 1fr) 340px;
        gap: 20px;
    }
    
    .forum-sidebar-left {
        display: none;
    }
    
    /* 主内容区占据第1列（因为左侧栏隐藏了） */
    .forum-main {
        grid-column: 1;
    }
    
    /* 右侧边栏占据第2列 */
    .forum-sidebar-right {
        grid-column: 2;
    }
}

/* 小屏幕平板 - 只显示主内容 */
@media (max-width: 767px) {
    .forum-container {
        grid-template-columns: 1fr;
    }
    
    .forum-sidebar-left {
        display: none;
    }
    
    .forum-sidebar-right {
        display: none;
    }
    
    /* 主内容区占据唯一的列 */
    .forum-main {
        grid-column: 1;
    }
    
    .forum-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .forum-actions {
        width: 100%;
    }
    
    .btn {
        flex: 1;
        justify-content: center;
    }
}

@media (max-width: 640px) {
    .forum-container {
        padding: 12px;
    }
    
    .forum-header {
        padding: 16px;
    }
    
    .forum-title-section h1 {
        font-size: 1.5rem;
    }
    
    .post-card {
        padding: 16px;
    }
    
    .post-title {
        font-size: 1.1rem;
    }
    
    .forum-filters {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }
    
    .filter-tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
}

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

.fade-in-up {
    animation: fadeInUp 0.5s ease-out;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.3;
}

.empty-state h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.empty-state p {
    margin-bottom: 24px;
}

/* ==================== 通知系统样式 ==================== */

/* 通知按钮 */
.notification-button-container {
    display: inline-block;
    margin-right: 15px;
}

.notification-btn {
    position: relative;
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #475569;
    cursor: pointer;
    transition: all 0.3s ease;
}

.notification-btn:hover {
    background: rgba(59, 130, 246, 0.1);
    color: var(--neon-blue);
    transform: scale(1.1);
}

.notification-badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    font-size: 11px;
    font-weight: 700;
    min-width: 18px;
    height: 18px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 5px;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.5);
    animation: pulse-badge 2s ease-in-out infinite;
}

@keyframes pulse-badge {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* 通知面板 */
.notification-panel {
    position: fixed;
    top: 80px;
    right: 20px;
    width: 400px;
    max-height: 600px;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    transform: translateY(-10px);
    opacity: 0;
    transition: all 0.3s ease;
}

.notification-panel.show {
    transform: translateY(0);
    opacity: 1;
}

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

.notification-panel-header h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.notification-panel-header h3 i {
    color: var(--neon-blue);
}

.notification-panel-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.notification-action-btn,
.notification-close-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 5px;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.notification-action-btn:hover,
.notification-close-btn:hover {
    background: var(--bg-hover);
    color: var(--neon-blue);
}

/* 通知筛选标签 */
.notification-filter-tabs {
    display: flex;
    padding: 10px 20px;
    gap: 10px;
    border-bottom: 1px solid var(--border-color);
}

.notification-filter-tab {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.notification-filter-tab:hover {
    border-color: var(--neon-blue);
    color: var(--neon-blue);
}

.notification-filter-tab.active {
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
    border-color: transparent;
    color: white;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

/* 通知列表 */
.notification-panel-list {
    max-height: 450px;
    overflow-y: auto;
    padding: 10px;
}

.notification-panel-list::-webkit-scrollbar {
    width: 6px;
}

.notification-panel-list::-webkit-scrollbar-track {
    background: transparent;
}

.notification-panel-list::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.notification-panel-list::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* 通知项 */
.notification-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px;
    margin-bottom: 8px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.notification-item:hover {
    background: var(--bg-hover);
    border-color: var(--border-color);
}

.notification-item.unread {
    background: rgba(59, 130, 246, 0.05);
    border-color: rgba(59, 130, 246, 0.2);
}

.notification-item.unread::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 60%;
    background: linear-gradient(180deg, var(--neon-blue), var(--neon-purple));
    border-radius: 0 2px 2px 0;
}

.notification-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.notification-icon.comment {
    background: rgba(59, 130, 246, 0.15);
    color: #60a5fa;
}

.notification-icon.like {
    background: rgba(239, 68, 68, 0.15);
    color: #f87171;
}

.notification-icon.collect {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
}

.notification-icon.mention {
    background: rgba(139, 92, 246, 0.15);
    color: #a78bfa;
}

.notification-icon.system {
    background: rgba(16, 185, 129, 0.15);
    color: #34d399;
}

.notification-content {
    flex: 1;
    min-width: 0;
}

.notification-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.notification-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: 6px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.notification-time {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.notification-delete-btn {
    opacity: 0;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1rem;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.notification-item:hover .notification-delete-btn {
    opacity: 1;
}

.notification-delete-btn:hover {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
}

/* 通知状态 */
.notification-loading,
.notification-empty,
.notification-error {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.notification-loading i,
.notification-empty i,
.notification-error i {
    font-size: 2.5rem;
    margin-bottom: 15px;
    opacity: 0.5;
}

.notification-empty p,
.notification-error p {
    font-size: 0.9rem;
    margin-top: 10px;
}

/* Toast提示 */
.forum-toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: rgba(30, 41, 59, 0.95);
    color: white;
    padding: 12px 24px;
    border-radius: 25px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
    z-index: 10000;
    opacity: 0;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.forum-toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .notification-panel {
        right: 10px;
        left: 10px;
        width: auto;
        max-height: 500px;
    }

    .notification-button-container {
        margin-right: 10px;
    }

    .notification-btn {
        width: 36px;
        height: 36px;
    }

    .notification-badge {
        font-size: 10px;
        min-width: 16px;
        height: 16px;
    }
}

/* ==================== 增强移动端优化 ==================== */

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    position: fixed;
    bottom: 80px;
    right: 20px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
    color: white;
    border: none;
    font-size: 1.2rem;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
    z-index: 998;
    cursor: pointer;
    transition: all 0.3s ease;
}

.mobile-menu-btn:active {
    transform: scale(0.95);
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2px;
    }

    .mobile-menu-btn i {
        font-size: 1.3rem;
    }
}

/* 通用移动端优化 */
@media (max-width: 768px) {
    /* 页面容器优化 */
    body {
        font-size: 14px;
    }

    /* 按钮组适配 */
    .forum-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }

    .forum-actions .btn {
        font-size: 0.9rem;
        padding: 10px 16px;
    }

    /* 帖子卡片优化 */
    .post-card {
        margin-bottom: 12px;
        padding: 16px;
    }

    .post-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .post-author-info {
        gap: 12px;
    }

    .author-avatar {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .post-meta {
        font-size: 0.75rem;
        flex-wrap: wrap;
    }

    .post-title {
        font-size: 1.1rem;
        line-height: 1.4;
    }

    .post-content {
        font-size: 0.9rem;
    }

    .post-stats {
        flex-wrap: wrap;
        gap: 12px;
    }

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

    /* 板块导航优化 */
    .board-list {
        max-height: none;
    }

    .board-item {
        padding: 10px 12px;
        font-size: 0.9rem;
    }

    /* 筛选器优化 */
    .filter-tabs {
        overflow-x: auto;
        white-space: nowrap;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
    }

    .filter-tabs::-webkit-scrollbar {
        display: none;
    }

    .filter-tab {
        font-size: 0.85rem;
        padding: 8px 16px;
    }

    /* 搜索结果优化 */
    .search-results-container {
        padding: 16px 0;
    }

    .search-result-item {
        padding: 16px;
    }

    .search-result-title {
        font-size: 1.1rem;
    }

    .search-result-excerpt {
        font-size: 0.85rem;
    }

    /* 侧边栏优化 - 移动端隐藏或调整 */
    .forum-sidebar-left {
        position: fixed;
        left: -260px;
        top: 0;
        bottom: 0;
        width: 260px;
        background: var(--bg-primary);
        z-index: 1001;
        transition: left 0.3s ease;
        overflow-y: auto;
        border-right: 1px solid var(--border-color);
    }

    .forum-sidebar-left.show {
        left: 0;
    }

    /* 添加移动端菜单按钮 */
    .mobile-menu-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1000;
        display: none;
    }

    .mobile-menu-overlay.show {
        display: block;
    }

    /* 用户卡片优化 */
    .user-card {
        padding: 16px;
    }

    .user-avatar-large {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }

    .user-name {
        font-size: 1.1rem;
    }

    .user-stats {
        gap: 8px;
    }

    .user-stat {
        padding: 8px;
    }

    .user-stat-value {
        font-size: 1.3rem;
    }

    /* 表单优化 */
    input[type="text"],
    input[type="email"],
    textarea,
    select {
        font-size: 16px; /* 防止iOS自动缩放 */
        padding: 12px;
    }

    /* 模态框优化 */
    .modal {
        padding: 10px;
    }

    .modal-content {
        width: 100%;
        max-width: 100%;
        margin: 0;
        border-radius: 16px 16px 0 0;
        max-height: 90vh;
        overflow-y: auto;
    }

    /* 标签优化 */
    .tag {
        font-size: 0.75rem;
        padding: 4px 10px;
    }

    /* 评论区优化 */
    .comment-item {
        padding: 12px;
    }

    .comment-avatar {
        width: 35px;
        height: 35px;
        font-size: 0.9rem;
    }

    .comment-content {
        font-size: 0.9rem;
    }

    /* 统计页面优化 */
    .overview-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .stat-card {
        padding: 16px;
    }

    .stat-icon {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }

    .stat-value {
        font-size: 1.8rem;
    }

    /* 图表优化 */
    .charts-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .chart-card {
        padding: 20px;
    }

    /* 底部导航栏（可选） */
    .mobile-bottom-nav {
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        border-top: 1px solid var(--border-color);
        display: flex;
        justify-content: space-around;
        padding: 8px 0;
        z-index: 999;
        box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.3);
    }

    .mobile-nav-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 4px;
        padding: 8px 16px;
        color: var(--text-muted);
        text-decoration: none;
        transition: all 0.3s ease;
    }

    .mobile-nav-item.active {
        color: var(--neon-blue);
    }

    .mobile-nav-item i {
        font-size: 1.3rem;
    }

    .mobile-nav-item span {
        font-size: 0.7rem;
    }

    /* 添加底部padding，避免被底部导航遮挡 */
    .forum-container {
        padding-bottom: 70px;
    }
}

/* 超小屏幕优化 */
@media (max-width: 480px) {
    .forum-header h1 {
        font-size: 1.3rem;
    }

    .forum-subtitle {
        font-size: 0.85rem;
    }

    .post-card {
        padding: 12px;
    }

    .post-title {
        font-size: 1rem;
    }

    .post-content {
        font-size: 0.85rem;
    }

    .btn {
        font-size: 0.85rem;
        padding: 8px 12px;
    }

    .stat-card {
        padding: 12px;
    }

    .stat-value {
        font-size: 1.5rem;
    }

    .overview-grid {
        grid-template-columns: 1fr;
    }

    /* 表单字段 */
    .form-group {
        margin-bottom: 16px;
    }

    .form-label {
        font-size: 0.9rem;
    }
}

/* 横屏平板优化 - 显示三栏但调整宽度 */
@media (min-width: 768px) and (max-width: 1024px) {
    .forum-container {
        grid-template-columns: 220px minmax(400px, 1fr) 260px;
        gap: 16px;
    }
    
    .post-card {
        padding: 20px;
    }
}

/* 触摸优化 */
@media (hover: none) and (pointer: coarse) {
    /* 增大可触摸区域 */
    .btn,
    .filter-tab,
    .board-item,
    .post-card,
    .tag,
    .stat-item {
        min-height: 44px; /* Apple推荐的最小触摸目标 */
    }

    /* 移除hover效果，使用active */
    .btn:hover,
    .filter-tab:hover,
    .board-item:hover {
        transform: none;
    }

    .btn:active,
    .filter-tab:active,
    .board-item:active {
        transform: scale(0.98);
        opacity: 0.8;
    }

    /* 优化滚动 */
    * {
        -webkit-tap-highlight-color: transparent;
        -webkit-touch-callout: none;
    }

    .forum-main,
    .notification-panel-list,
    .sidebar-card {
        -webkit-overflow-scrolling: touch;
    }
}

/* PWA 全屏模式优化 */
@media (display-mode: standalone) {
    .header {
        padding-top: env(safe-area-inset-top);
    }

    .forum-container {
        padding-bottom: calc(70px + env(safe-area-inset-bottom));
    }

    .mobile-bottom-nav {
        padding-bottom: env(safe-area-inset-bottom);
    }
}

/* ==================== 搜索结果样式 ==================== */

.search-results-container {
    padding: 20px 0;
}

.search-results-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.search-results-header h2 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 10px;
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.search-query {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.search-query strong {
    color: var(--neon-blue);
    font-weight: 600;
}

.search-count {
    font-size: 0.95rem;
    color: var(--text-muted);
}

.search-count strong {
    color: var(--neon-purple);
    font-weight: 600;
}

.search-results-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.search-result-item {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.search-result-item:hover {
    border-color: rgba(59, 130, 246, 0.5);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.15);
    transform: translateY(-2px);
}

.search-result-type {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
    color: white;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 15px;
    margin-bottom: 12px;
}

.search-result-type.comment {
    background: linear-gradient(135deg, #60a5fa, #a78bfa);
}

.search-result-type i {
    font-size: 0.9rem;
}

.search-result-title {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.4;
}

.search-result-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.search-result-title a:hover {
    color: var(--neon-blue);
}

.search-result-excerpt {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 16px;
}

.search-result-excerpt mark {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.3), rgba(139, 92, 246, 0.3));
    color: var(--neon-blue);
    font-weight: 600;
    padding: 2px 4px;
    border-radius: 3px;
}

.search-result-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.search-result-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.search-result-meta i {
    color: var(--neon-blue);
    opacity: 0.7;
}

.search-result-board {
    background: rgba(59, 130, 246, 0.1);
    padding: 4px 10px;
    border-radius: 12px;
    color: var(--neon-blue) !important;
}

.search-result-stats {
    display: flex;
    gap: 12px;
}

.search-result-stats i {
    margin-right: 3px;
}

/* 搜索结果为空状态 */
.search-results-container .empty-state {
    margin-top: 60px;
}

/* 移动端搜索结果适配 */
@media (max-width: 768px) {
    .search-results-header {
        flex-direction: column;
        gap: 15px;
    }

    .search-results-header h2 {
        font-size: 1.5rem;
    }

    .search-result-item {
        padding: 16px;
    }

    .search-result-title {
        font-size: 1.2rem;
    }

    .search-result-meta {
        font-size: 0.8rem;
        gap: 10px;
    }
}

/* ==================== 数据统计页面样式 ==================== */

.statistics-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

.statistics-header {
    margin-bottom: 40px;
    text-align: center;
}

.statistics-header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.statistics-header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* 概览卡片网格 */
.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.stat-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.1), transparent);
    pointer-events: none;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.15);
    border-color: rgba(59, 130, 246, 0.5);
}

.stat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.stat-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.posts {
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.stat-icon.comments {
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
}

.stat-icon.users {
    background: linear-gradient(135deg, #10b981, #34d399);
}

.stat-icon.likes {
    background: linear-gradient(135deg, #ef4444, #f87171);
}

.stat-icon.collections {
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
}

.stat-body {
    margin-top: 12px;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.stat-value {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1;
}

.stat-trend {
    margin-top: 8px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 5px;
}

.stat-trend.positive {
    color: var(--forum-success);
}

.stat-trend.negative {
    color: var(--forum-danger);
}

/* 图表网格 */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.chart-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    transition: all 0.3s ease;
}

.chart-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    border-color: rgba(59, 130, 246, 0.3);
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.chart-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.chart-title i {
    color: var(--neon-blue);
}

.chart-body {
    position: relative;
    min-height: 300px;
}

.chart-body canvas {
    max-height: 400px;
}

/* 排行榜网格 */
.rankings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.ranking-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    transition: all 0.3s ease;
}

.ranking-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
    border-color: rgba(59, 130, 246, 0.3);
}

.ranking-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.ranking-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.ranking-title i {
    color: var(--neon-blue);
}

.ranking-list {
    list-style: none;
}

.ranking-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px;
    border-radius: 12px;
    margin-bottom: 10px;
    background: rgba(255, 255, 255, 0.02);
    transition: all 0.3s ease;
}

.ranking-item:hover {
    background: rgba(59, 130, 246, 0.05);
    transform: translateX(5px);
}

.ranking-number {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.95rem;
}

.ranking-item:nth-child(1) .ranking-number {
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: white;
}

.ranking-item:nth-child(2) .ranking-number {
    background: linear-gradient(135deg, #94a3b8, #64748b);
    color: white;
}

.ranking-item:nth-child(3) .ranking-number {
    background: linear-gradient(135deg, #f97316, #ea580c);
    color: white;
}

.ranking-item:nth-child(n+4) .ranking-number {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
}

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

.ranking-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.ranking-name a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.ranking-name a:hover {
    color: var(--neon-blue);
}

.ranking-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.ranking-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--neon-blue);
}

/* 标签云 */
.tags-cloud {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 40px;
}

.tags-cloud-header {
    margin-bottom: 24px;
}

.tags-cloud-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.tags-cloud-title i {
    color: var(--neon-blue);
}

.tags-cloud-body {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.tag-cloud-item {
    padding: 8px 16px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: all 0.3s ease;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.tag-cloud-item:hover {
    background: linear-gradient(135deg, var(--neon-blue), var(--neon-purple));
    color: white;
    border-color: transparent;
    transform: translateY(-2px);
}

.tag-cloud-item .tag-count {
    background: rgba(255, 255, 255, 0.2);
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* 统计页面移动端适配 */
@media (max-width: 1024px) {
    .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .rankings-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .statistics-header h1 {
        font-size: 1.8rem;
    }
    
    .overview-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .stat-card {
        padding: 16px;
    }
    
    .stat-value {
        font-size: 1.8rem;
    }
    
    .chart-card,
    .ranking-card,
    .tags-cloud {
        padding: 20px;
    }
    
    .chart-body {
        min-height: 250px;
    }
}

@media (max-width: 480px) {
    .overview-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-card {
        padding: 12px;
    }
    
    .stat-icon {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }
}

/* ==================== 图片上传样式 ==================== */

.image-upload-wrapper {
    margin: 20px 0;
}

.image-upload-container {
    width: 100%;
}

.image-preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.image-preview-item {
    position: relative;
    width: 100%;
    padding-bottom: 100%; /* 1:1 比例 */
    border-radius: 8px;
    overflow: hidden;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.image-preview-item:hover {
    border-color: var(--neon-blue);
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.3);
}

.image-preview-item img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.image-preview-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.image-preview-item:hover .image-preview-overlay {
    opacity: 1;
}

.btn-remove-image {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(239, 68, 68, 0.9);
    color: white;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-remove-image:hover {
    background: #dc2626;
    transform: scale(1.1);
}

.image-upload-button {
    margin-bottom: 16px;
}

.btn-upload-image {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 20px;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-upload-image:hover {
    border-color: var(--neon-blue);
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.2);
}

.btn-upload-image i {
    font-size: 2rem;
    color: var(--neon-blue);
}

.btn-upload-image span {
    font-size: 1rem;
    font-weight: 500;
}

.btn-upload-image small {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.upload-progress {
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: 8px;
    margin-top: 12px;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-primary);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 8px;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--neon-blue), var(--neon-purple));
    border-radius: 4px;
    transition: width 0.3s ease;
    animation: progressShine 1.5s infinite;
}

@keyframes progressShine {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.progress-text {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-align: center;
    display: block;
}

/* 帖子内容中的图片展示 */
.post-images {
    margin: 16px 0;
    display: grid;
    gap: 12px;
}

/* 单图 */
.post-images.images-1 {
    grid-template-columns: 1fr;
}

.post-images.images-1 img {
    max-height: 500px;
    width: 100%;
    object-fit: contain;
}

/* 2-4图 */
.post-images.images-2,
.post-images.images-3,
.post-images.images-4 {
    grid-template-columns: repeat(2, 1fr);
}

/* 5-9图 */
.post-images.images-5,
.post-images.images-6,
.post-images.images-7,
.post-images.images-8,
.post-images.images-9 {
    grid-template-columns: repeat(3, 1fr);
}

.post-images img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid var(--border-color);
}

.post-images img:hover {
    transform: scale(1.02);
    border-color: var(--neon-blue);
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.3);
}

/* 图片查看器 */
.image-viewer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.image-viewer-overlay.show {
    opacity: 1;
    pointer-events: all;
}

.image-viewer-content {
    max-width: 90%;
    max-height: 90%;
    position: relative;
}

.image-viewer-content img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 8px;
}

.image-viewer-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-viewer-close:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: rotate(90deg);
}

.image-viewer-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-viewer-nav:hover {
    background: rgba(255, 255, 255, 0.2);
}

.image-viewer-nav.prev {
    left: 20px;
}

.image-viewer-nav.next {
    right: 20px;
}

/* 移动端图片上传优化 */
@media (max-width: 768px) {
    .image-preview-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 8px;
    }

    .post-images img {
        height: 120px;
    }

    .btn-upload-image {
        padding: 16px;
    }

    .btn-upload-image i {
        font-size: 1.5rem;
    }

    .image-viewer-content {
        max-width: 95%;
        max-height: 95%;
    }

    .image-viewer-close,
    .image-viewer-nav {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }

    .image-viewer-nav.prev {
        left: 10px;
    }

    .image-viewer-nav.next {
        right: 10px;
    }
}