/* ============================================
   社区页面样式
   提取自 templates/community/index.html
   ============================================ */

/* ============================================
   社区顶部 Hero 区域（搜索框 + 广告轮播）
   ============================================ */
.community-hero {
    display: flex;
    flex-direction: column;
    gap: 0;
    background: var(--color-bg-primary);
}

/* -- 搜索框 + 右上角用户信息 -- */
.community-hero-search {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 18px 24px 12px;
    position: relative;
}
.community-hero-search .search-box {
    width: 100%;
    max-width: 560px;
}
/* 用户信息区：绝对定位右侧，不影响搜索框居中 */
.community-hero-user {
    position: absolute;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
}

/* content-header 内嵌搜索框 */
.header-search-box {
    flex: 1;
    max-width: 480px;
    margin: 0 24px;
}
.header-search-box .search-input {
    max-width: 100%;
    width: 100%;
}
/* 未登录时的登录/注册按钮 */
.header-auth-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* -- 广告轮播容器 -- */
.community-ad-carousel {
    position: relative;
    height: 300px;
    min-height: 300px;
    overflow: hidden;
    flex-shrink: 0;
    width: 100%;
    padding-left: 20px;   /* 左侧预留间距，不贴紧主导航栏 */
    box-sizing: border-box;
}

/* -- 轨道 -- */
.community-ad-track {
    display: flex;
    height: 100%;
    transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: transform;
}

/* -- 左右渐变遮罩 & 箭头导航（hover 时显示，#121212 与背景色一致） -- */
.community-ad-nav {
    position: absolute;
    top: 10px;              /* 与广告卡片 padding-top 对齐 */
    height: 230px;          /* 只遮挡广告图片高度，不超出 */
    width: 110px;           /* 原 60px → 约 1.8 倍 */
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}
.community-ad-carousel:hover .community-ad-nav {
    opacity: 1;
    pointer-events: auto;
}
.community-ad-nav-left {
    left: 0;
}
.community-ad-nav-right {
    right: 0;
}
.community-ad-arrow {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(4px);
    color: #fff;
    font-size: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.2s ease;
}
.community-ad-arrow:hover {
    background: rgba(255,255,255,0.35);
    transform: scale(1.1);
}

/* -- 广告卡片通用（上图 230px + 下方标题副标题） -- */
.community-ad-item,
.community-ad-mock {
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
    padding: 10px 5px;
    transition: transform 0.25s ease;
}
.community-ad-item:hover,
.community-ad-mock:hover {
    transform: translateY(-3px);
}

/* 广告图片区域 */
.community-ad-card-img {
    height: 230px;
    min-height: 230px;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
}
.community-ad-card-img img {
    height: 100%;
    width: 100%;
    object-fit: cover;
    display: block;
    user-select: none;
    -webkit-user-drag: none;
}

/* 广告下方文字区域 */
.community-ad-card-text {
    padding: 8px 4px 0;
    min-width: 0;
}
.community-ad-card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.4;
}
.community-ad-card-sub {
    font-size: 12px;
    color: var(--color-text-tertiary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.4;
    margin-top: 2px;
}

/* 筛选栏 */
.community-filter-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 30px 20px;
    border-bottom: 0px solid var(--color-border);
    position: relative;
    z-index: 100;
    background: transparent;
}

.community-filter-left {
    display: flex;
    gap: 6px;
    flex: 1;
    min-width: 0;
    overflow-x: auto;
    scrollbar-width: none;           /* Firefox */
    -ms-overflow-style: none;        /* IE/Edge */
    mask-image: linear-gradient(to right, black calc(100% - 32px), transparent 100%);
    -webkit-mask-image: linear-gradient(to right, black calc(100% - 32px), transparent 100%);
    padding-right: 16px;
}

.community-filter-left::-webkit-scrollbar {
    display: none;                    /* Chrome/Safari */
}

/* 热门标签按钮 */
.community-tag-btn {
    flex-shrink: 0;
    padding: 4px 14px;
    border-radius: 999px;
    border: 1px solid var(--color-border);
    background: transparent;
    color: var(--color-text-tertiary);
    font-size: var(--font-size-xxs);
    cursor: pointer;
    transition: all var(--motion-normal) var(--motion-ease);
    white-space: nowrap;
    line-height: 1.5;
}

.community-tag-btn:hover {
    color: var(--color-text-primary);
    border-color: var(--color-secondary);
}

.community-tag-btn.active {
    background: var(--color-primary);
    color: var(--color-on-primary);
    border-color: var(--color-primary);
}

.community-filter-right {
    display: flex;
    gap: 5px;
    flex-shrink: 0;
}

/* 筛选栏下拉框：覆盖全局 width:100%，使其自适应宽度 */
.community-filter-right select {
    width: auto;
    background-color: var(--color-bg-tertiary);
}

/* 布局切换按钮组 */
.layout-switcher {
    display: flex;
    align-items: center;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    padding: 2px;
    margin-left: 8px;
    flex-shrink: 0;
}

.layout-switcher .layout-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 6px 10px;
    border: none;
    background: transparent;
    color: var(--color-text-secondary);
    font-size: 12px;
    cursor: pointer;
    border-radius: var(--radius-xs);
    transition: all 0.2s ease;
    white-space: nowrap;
}

.layout-switcher .layout-btn:hover {
    color: var(--color-text-primary);
}

.layout-switcher .layout-btn.active {
    background: var(--color-bg-secondary);
    color: var(--color-text-primary);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.layout-switcher .layout-btn img {
    width: 14px;
    height: 14px;
    filter: brightness(0) saturate(100%) invert(50%);
}

.layout-switcher .layout-btn.active img {
    filter: brightness(0) saturate(100%) invert(80%);
}

/* 瀑布流容器 - Flexbox列布局 */
#content-container {
    padding: 0 20px;
}

/* 瀑布流模式 */
#waterfall-columns.waterfall-columns {
    display: flex !important;
    gap: 8px;
    align-items: flex-start;
}

/* 瀑布流模式下的项目样式 - 重置网格模式的样式 */
#waterfall-columns.waterfall-columns .waterfall-item {
    aspect-ratio: unset !important;
}

#waterfall-columns.waterfall-columns .waterfall-item-foundation {
    height: 0 !important;
    aspect-ratio: unset !important;
}

/* 网格布局模式 */
#waterfall-columns.grid-layout {
    display: grid !important;
    gap: 8px;
    grid-template-columns: repeat(var(--column-count, 4), minmax(0, 1fr));
}

.waterfall-column {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* 瀑布流项目 */
.waterfall-item {
    position: relative;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--color-bg-tertiary);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    /* 覆盖public.css中的隐藏样式 */
    opacity: 1;
    visibility: visible;
    /* 反爬虫：禁止选中 */
    user-select: none;
    -webkit-user-select: none;
}

/* 布局地基：用 paddingBottom 撑开高度，确保滚动不跳动 */
.waterfall-item-foundation {
    position: relative;
    width: 100%;
    height: 0;
    overflow: hidden;
}

/* 内容容器：绝对定位填充地基 */
.waterfall-item-content {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.waterfall-item-content img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.5s ease;
    /* 禁止拖拽 */
    -webkit-user-drag: none;
}

/* 脱水状态：只显示简洁的占位背景（参考 React 版的极简设计） */
.waterfall-item-dehydrated {
    position: absolute;
    inset: 0;
    background: var(--color-bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.waterfall-item-dehydrated i {
    display: none; /* 隐藏图标，更简洁 */
}

.waterfall-item.dehydrated .waterfall-item-info {
    opacity: 0.5;
}

/* 反爬虫：透明遮罩层防止拖拽保存 */
.waterfall-item-overlay {
    position: absolute;
    inset: 0;
    z-index: 10;
    cursor: pointer;
}

/* 虚拟窗口化：视口外占位符 */
.waterfall-item-placeholder-only {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    position: relative;
    width: 100%;
}

.waterfall-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

/* 瀑布流模式 - 图片加载状态 */
.waterfall-item.loaded .waterfall-item-placeholder {
    display: none;
}

.waterfall-item:not(.loaded) .waterfall-item-content img {
    opacity: 0;
}

.waterfall-item.loaded .waterfall-item-content img {
    opacity: 1;
}

/* 瀑布流占位符 */
.waterfall-item-placeholder {
    position: absolute;
    inset: 0;
    background: var(--color-bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pulse 1.5s ease-in-out infinite;
}

/* 加载转圈指示器（纯CSS，居中显示在占位符上） */
.waterfall-item-placeholder::after {
    content: '';
    width: 28px;
    height: 28px;
    border: 2.5px solid rgba(255, 255, 255, 0.08);
    border-top-color: rgba(255, 255, 255, 0.35);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 0.3; }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 网格布局下的项目样式 */
#waterfall-columns.grid-layout .waterfall-item {
    aspect-ratio: 1 / 1;
}

/* 网格布局不需要地基撑高，直接用 aspect-ratio */
#waterfall-columns.grid-layout .waterfall-item-foundation {
    height: auto;
    padding-bottom: 0 !important;
    aspect-ratio: 1 / 1;
}

#waterfall-columns.grid-layout .waterfall-item-content img {
    object-fit: cover;
}

/* 空状态样式覆盖 */
#content-container .empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
}

#content-container .empty-state-icon,
#content-container .empty-state-title,
#content-container .empty-state-hint {
    display: block;
    width: 100%;
}

/* 反爬虫：安全验证弹窗样式 */
.security-notice {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.security-notice-content {
    background: var(--color-bg-primary);
    border-radius: var(--radius-lg);
    padding: 40px;
    max-width: 400px;
    width: 100%;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: securityNoticeIn 0.3s ease-out;
}

@keyframes securityNoticeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.security-notice-icon {
    width: 80px;
    height: 80px;
    background: var(--color-accent-alpha-10);
    color: var(--color-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.security-notice-icon i {
    font-size: 36px;
}

.security-notice-content h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text-primary);
    margin: 0 0 12px;
}

.security-notice-content > p {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin: 0 0 24px;
}

.security-notice-content .btn {
    width: 100%;
    padding: 14px 24px;
    font-size: 16px;
    font-weight: 600;
}

.security-notice-footer {
    margin-top: 20px;
    font-size: 10px;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* 响应式适配 */
@media (max-width: 768px) {
    .community-filter-bar {
        flex-direction: column;
        gap: 16px;
    }
    
    .community-filter-left,
    .community-filter-right {
        width: 100%;
        justify-content: center;
    }
    
    .community-filter-center {
        max-width: 100%;
        margin: 0;
        width: 100%;
    }
}

/* ============================================
   双向脱水监控面板 (Bi-Directional Hydration Monitor)
   ============================================ */
.hydration-monitor {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    margin-bottom: 16px;
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    position: sticky;
    top: 70px;
    z-index: 90;
}

.hydration-monitor-status {
    display: flex;
    align-items: center;
    gap: 8px;
}

.hydration-pulse {
    position: relative;
    width: 8px;
    height: 8px;
}

.hydration-pulse::before {
    content: '';
    position: absolute;
    inset: 0;
    background: #22c55e;
    border-radius: 50%;
    animation: hydration-ping 1.5s ease-in-out infinite;
}

.hydration-pulse::after {
    content: '';
    position: absolute;
    inset: 0;
    background: #22c55e;
    border-radius: 50%;
}

@keyframes hydration-ping {
    0%, 100% { transform: scale(1); opacity: 0.75; }
    50% { transform: scale(2); opacity: 0; }
}

.hydration-label {
    font-size: 10px;
    font-weight: 600;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hydration-monitor-stats {
    display: flex;
    gap: 24px;
}

.hydration-stat {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
}

.hydration-stat-label {
    font-size: 10px;
    color: var(--color-text-quaternary);
    font-family: monospace;
}

.hydration-stat-value {
    font-size: 12px;
    font-weight: 600;
    color: var(--color-text-primary);
    font-family: monospace;
}

.hydration-stat-active {
    color: var(--color-primary);
}

.hydration-stat-mode {
    color: #22c55e;
}

@media (max-width: 768px) {
    .hydration-monitor {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }
    
    .hydration-monitor-stats {
        width: 100%;
        justify-content: space-between;
    }
    
    .hydration-stat {
        align-items: flex-start;
    }
}