:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #22c55e;
    --danger-color: #ef4444;
    --background-color: #f8fafc;
    --surface-color: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-tertiary: #94a3b8;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --spacing-1: 4px;
    --spacing-2: 8px;
    --spacing-3: 12px;
    --spacing-4: 16px;
    --spacing-5: 20px;
    --spacing-6: 24px;
}

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--background-color);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.5;
}

/* 应用容器 */
.ai-news-app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 主容器 - 移动优先 */
.app-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-3);
    box-sizing: border-box;
}

.app-main {
    flex: 1;
    min-width: 0;
    width: 100%;
    order: 2;
}

/* 当没有侧边栏时，主内容区域居中 */
.app-container:not(:has(.app-sidebar)) .app-main {
    max-width: 800px;
    margin: 0 auto;
}

/* 侧边栏 - 移动优先 */
.app-sidebar {
    width: 100%;
    flex-shrink: 0;
    position: relative;
    order: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.sidebar-section {
    background: var(--surface-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    width: 100%;
    max-height: none;
}

/* 移动设备上侧边栏不固定 */
.sidebar-section.fixed {
    position: static !important;
    width: 100% !important;
    z-index: auto !important;
    max-height: none !important;
    overflow-y: visible !important;
    top: auto !important;
}

.section-title {
    padding: var(--spacing-4) var(--spacing-5);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.tags-container {
    padding: var(--spacing-3);
    overflow-y: auto;
    flex-grow: 1;
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
    width: 100%;
    box-sizing: border-box;
    /* 防止滚动时触发父元素的滚动事件 */
    overscroll-behavior: contain;
    /* 平滑滚动 */
    scroll-behavior: smooth;
}

@media (min-width: 768px) {
    .tags-container {
        padding: var(--spacing-4);
    }
}

/* 自定义滚动条样式 - Webkit浏览器 */
.tags-container::-webkit-scrollbar {
    width: 6px;
}

.tags-container::-webkit-scrollbar-track {
    background: transparent;
}

.tags-container::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 3px;
}

.tags-container::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-tertiary);
}

.tags-list {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-2);
    width: 100%;
}

.tag-item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 10px;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 12px;
    color: var(--text-primary);
    cursor: pointer;
    user-select: none;
    transition: all 0.2s ease;
    position: relative;
    flex: 0 1 auto;
    min-width: 0;
    /* 确保高度一致 - 使用固定高度 */
    height: 28px;
    line-height: 28px;
    box-sizing: border-box;
    vertical-align: middle;
    /* 微调垂直对齐，稍微下移 */
    margin-top: 1px;
}

@media (min-width: 480px) {
    .tag-item {
        padding: 0 11px;
        font-size: 13px;
        height: 30px;
        line-height: 30px;
    }
}

@media (min-width: 768px) {
    .tag-item {
        padding: 0 12px;
        font-size: 14px;
        height: 32px;
        line-height: 32px;
    }
}

.tag-item input[type="checkbox"] {
    display: none;
}

.tag-item:hover {
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.tag-item.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.tag-item.active .tag-count {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

/* 标签计数样式 */
.tag-count {
    font-size: 10px;
    padding: 0 6px;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
    background: rgba(0, 0, 0, 0.06);
    color: var(--text-secondary);
    margin-left: 4px;
    transition: all 0.2s ease;
    white-space: nowrap;
    /* 确保计数标签与文字对齐 */
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1.2;
    height: 18px;
    vertical-align: middle;
}

@media (min-width: 480px) {
    .tag-count {
        height: 20px;
        line-height: 1.2;
    }
}

@media (min-width: 768px) {
    .tag-count {
        height: 22px;
        line-height: 1.2;
    }
}

@media (min-width: 480px) {
    .tag-count {
        font-size: 11px;
        padding: 2px 7px;
        min-width: 22px;
    }
}

@media (min-width: 768px) {
    .tag-count {
        font-size: 12px;
        padding: 2px 8px;
        min-width: 24px;
    }
}

/* 标签内容布局 */
.tag-content {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    height: 100%;
    line-height: inherit;
    vertical-align: middle;
    /* 微调垂直对齐，稍微下移 */
    position: relative;
    top: 1px;
}

/* 新闻列表中的标签样式 */
.tag-link {
    font-size: 13px;
    color: var(--text-secondary);
    text-decoration: none;
    background: var(--background-color);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.tag-link:hover {
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--primary-color);
}

/* 更多标签按钮样式 */
.show-more-tags {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 0 12px;
    background: transparent;
    border: none;
    font-size: 12px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    /* 确保高度和tag-item一致 */
    height: 28px;
    line-height: 28px;
    border-radius: 20px;
    box-sizing: border-box;
    vertical-align: middle;
}

@media (min-width: 480px) {
    .show-more-tags {
        font-size: 13px;
        padding: 0 12px;
        height: 30px;
        line-height: 30px;
    }
}

@media (min-width: 768px) {
    .show-more-tags {
        font-size: 13px;
        padding: 0 12px;
        height: 32px;
        line-height: 32px;
    }
}

.show-more-tags:hover {
    color: var(--primary-color);
}

.show-more-tags svg {
    transition: transform 0.2s ease;
}

.show-more-tags.active svg {
    transform: rotate(180deg);
}

/* 已选标签样式 */
.selected-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 12px 16px;
    background: var(--surface-color);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
}

.selected-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px 4px 12px;
    background: var(--primary-color);
    color: white;
    border-radius: 20px;
    font-size: 13px;
}

.remove-tag {
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    padding: 0;
    color: white;
    cursor: pointer;
    transition: background-color 0.2s;
}

.remove-tag:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* 日期导航 */
.date-navigation {
    display: flex;
    margin-bottom: var(--spacing-6);
    background: var(--surface-color);
    border-radius: var(--radius-md);
    padding: 12px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.date-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    height: 60px;
    text-decoration: none;
    color: var(--text-primary);
    border-radius: var(--radius-sm);
    position: relative;
    transition: all 0.2s ease;
    padding: 0 8px;
    min-width: 60px;
}

.date-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 24px;
    background: var(--border-color);
}

.date-number {
    font-size: 20px;
    font-weight: 500;
    line-height: 1;
    margin-bottom: 4px;
}

.date-weekday {
    font-size: 12px;
    color: var(--text-tertiary);
    text-transform: uppercase;
}

.date-item.active {
    background: var(--primary-color);
    color: white;
}

.date-item.active::after {
    display: none;
}

.date-item.active + .date-item::after {
    display: none;
}

.date-item.active .date-weekday {
    color: rgba(255, 255, 255, 0.8);
}

.date-item:hover:not(.active) {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
}

/* 新闻列表 - 移动优先 */
.news-feed {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    width: 100%;
}

@media (min-width: 768px) {
    .news-feed {
        gap: var(--spacing-6);
    }
}

.news-group {
    background: var(--surface-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    width: 100%;
}

@media (min-width: 768px) {
    .news-group {
        border-radius: var(--radius-lg);
    }
}

.news-group-header {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-3) var(--spacing-4);
    border-bottom: 1px solid var(--border-color);
    gap: var(--spacing-2);
}

@media (min-width: 768px) {
    .news-group-header {
        padding: var(--spacing-4) var(--spacing-5);
    }
}

.date-info {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-2);
}

.date-info .month {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.date-info .day {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.news-count {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.news-list {
    display: flex;
    flex-direction: column;
}

.news-card {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.2s ease;
    width: 100%;
    box-sizing: border-box;
}

@media (min-width: 768px) {
    .news-card {
        flex-direction: row;
        gap: var(--spacing-4);
        padding: var(--spacing-6);
    }
    
    .news-card:hover {
        background: var(--background-color);
        transform: translateY(-2px);
        box-shadow: var(--shadow-md);
    }
}

.news-card:last-child {
    border-bottom: none;
}

.news-time {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    min-width: auto;
    order: -1;
}

@media (min-width: 768px) {
    .news-time {
        font-size: 0.875rem;
        min-width: 48px;
        order: 0;
    }
}

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

.news-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-2);
    line-height: 1.4;
}

@media (min-width: 768px) {
    .news-title {
        font-size: 1.25rem;
        margin-bottom: var(--spacing-3);
    }
}

.news-title a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.news-title a:hover {
    color: var(--primary-color);
}

.news-body {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-primary);
    margin: var(--spacing-4) 0;
}

.news-body p {
    margin-bottom: var(--spacing-4);
}

.news-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: var(--spacing-4) 0;
}

.news-body iframe {
    max-width: 100%;
    margin: var(--spacing-4) 0;
    border-radius: var(--radius-md);
}

.news-body figure {
    margin: var(--spacing-4) 0;
}

.news-body figure img {
    margin: 0;
}

.news-body figcaption {
    font-size: 14px;
    color: var(--text-secondary);
    text-align: center;
    margin-top: var(--spacing-2);
}

.news-body blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: var(--spacing-4);
    margin: var(--spacing-4) 0;
    font-style: italic;
    color: var(--text-secondary);
}

.news-body ul,
.news-body ol {
    margin: var(--spacing-4) 0;
    padding-left: var(--spacing-6);
}

.news-body li {
    margin-bottom: var(--spacing-2);
}

.news-body pre {
    background: var(--background-color);
    padding: var(--spacing-4);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: var(--spacing-4) 0;
}

.news-body code {
    font-family: monospace;
    background: var(--background-color);
    padding: 2px 4px;
    border-radius: 4px;
}

.news-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-3);
}

.news-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.more-tags {
    font-size: 12px;
    color: var(--text-tertiary);
    background: var(--background-color);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
}

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

.ai-news-action-btn {
    display: inline-flex !important;
    align-items: center !important;
    gap: 6px !important;
    padding: 6px 12px !important;
    border: none !important;
    background: transparent !important;
    border-radius: var(--radius-sm) !important;
    color: var(--text-secondary) !important;
    cursor: pointer !important;
    transition: all 0.2s ease !important;
    font-size: 13px !important;
    line-height: 1 !important;
    min-height: unset !important;
    min-width: unset !important;
    box-shadow: none !important;
    text-transform: none !important;
}

.ai-news-action-btn:hover {
    color: var(--primary-color) !important;
    background: rgba(37, 99, 235, 0.05) !important;
    border: none !important;
    box-shadow: none !important;
}

.ai-news-action-btn .count {
    font-size: 13px !important;
    color: inherit !important;
    line-height: 1 !important;
}

.ai-news-like-btn.active {
    color: var(--primary-color) !important;
    background: transparent !important;
    border: none !important;
}

.ai-news-dislike-btn.active {
    color: var(--danger-color) !important;
    background: transparent !important;
    border: none !important;
}

.ai-news-action-btn svg {
    stroke: currentColor !important;
    fill: none !important;
}

/* 分页样式 */
.pagination {
    margin-top: var(--spacing-6);
    display: flex;
    justify-content: center;
}

.pagination .page-numbers {
    display: flex;
    list-style: none;
    padding: 0;
    gap: var(--spacing-2);
    background: transparent;
}

.pagination .page-numbers li {
    display: inline-block;
    background: var(--surface-color);
    border-radius: var(--radius-sm);
}

.pagination .page-numbers a,
.pagination .page-numbers span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s ease;
}

.pagination .page-numbers a:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
}

.pagination .page-numbers .current {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: var(--spacing-6);
    color: var(--text-tertiary);
}

.empty-icon {
    margin-bottom: var(--spacing-4);
}

.empty-state h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--spacing-2);
    color: var(--text-primary);
}

.empty-state p {
    font-size: 0.875rem;
}

/* 响应式设计 - 移动优先，逐步增强 */

/* 小屏幕手机 (≥375px) */
@media (min-width: 375px) {
    .app-container {
        padding: var(--spacing-4);
    }
    
    .calendar-day {
        min-height: 52px;
        padding: 6px 3px;
    }
    
    .weekday {
        font-size: 12px;
    }
}

/* 大屏幕手机/小平板 (≥480px) */
@media (min-width: 480px) {
    .calendar-day {
        min-height: 56px;
        padding: 6px 4px;
    }
    
    .day-number {
        font-size: 13px;
    }
    
    .day-count {
        font-size: 10px;
    }
}

/* 平板 (≥768px) */
@media (min-width: 768px) {
    .app-container {
        flex-direction: row;
        gap: var(--spacing-5);
        padding: var(--spacing-5);
        max-width: 1200px;
    }
    
    .app-sidebar {
        width: 280px;
        flex-shrink: 0;
        order: 1;
    }
    
    .app-main {
        order: 2;
        flex: 1;
    }
    
    .sidebar-section {
        max-height: calc(100vh - 40px);
        overflow: hidden;
    }
    
    .sidebar-section.fixed {
        position: fixed;
        top: 20px;
        width: 280px;
        z-index: 100;
        max-height: calc(100vh - 40px);
        overflow-y: auto;
        left: auto;
        right: auto;
    }
    
    /* 确保固定定位不会覆盖主内容 */
    .app-sidebar {
        position: relative;
    }
    
    /* 当侧边栏固定时，主内容区域不需要调整 */
    .app-main {
        position: relative;
        z-index: 1;
    }
    
    .calendar-header {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
    
    .calendar-title {
        flex-direction: row;
        flex: 1;
    }
    
    .calendar-select-wrapper {
        width: auto;
        flex: 1;
    }
    
    .calendar-year-select,
    .calendar-month-select {
        width: 100%;
    }
    
    .calendar-view-switch {
        width: auto;
    }
    
    .calendar-day {
        min-height: 52px;
        padding: 6px 3px;
    }
    
    .calendar-weekdays {
        gap: 2px;
    }
    
    .calendar-days {
        gap: 2px;
    }
    
    .weekday {
        font-size: 12px;
        padding: 4px 2px;
    }
}

/* 桌面 (≥1024px) */
@media (min-width: 1024px) {
    .app-container {
        padding: var(--spacing-6);
        gap: var(--spacing-6);
        max-width: 1440px;
    }
    
    .app-sidebar {
        width: 300px;
    }
    
    .sidebar-section.fixed {
        width: 300px !important;
        left: auto !important;
        right: auto !important;
    }
    
    .calendar-container {
        padding: var(--spacing-2);
    }
    
    .calendar-weekdays {
        gap: 1px;
    }
    
    .calendar-days {
        gap: 1px;
    }
    
    .calendar-day {
        min-height: 50px;
        padding: 5px 2px;
    }
    
    .weekday {
        font-size: 10px;
        padding: 3px 1px;
    }
}

/* 大桌面 (≥1280px) */
@media (min-width: 1280px) {
    .calendar-day {
        min-height: 65px;
    }
}

/* 页面标题 - 移动优先 */
.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
    line-height: 1.2;
}

@media (min-width: 768px) {
    .page-title {
        font-size: 2rem;
        margin-bottom: var(--spacing-6);
    }
}

/* 日期筛选条 - 移动优先 */
.date-filter-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-3);
    background: var(--surface-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-3);
    border: 1px solid var(--border-color);
}

@media (min-width: 480px) {
    .date-filter-bar {
        gap: var(--spacing-3);
        padding: var(--spacing-3) var(--spacing-4);
        margin-bottom: var(--spacing-4);
    }
}

.filter-label {
    font-size: 14px;
    color: var(--text-secondary);
}

.filter-value {
    font-size: 14px;
    font-weight: 500;
    color: var(--primary-color);
}

.clear-filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    transition: all 0.2s ease;
    margin-left: auto;
}

.clear-filter-btn:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

/* 日历组件 - 移动优先 */
.calendar-section {
    margin-top: 0;
    width: 100%;
    max-height: none;
    overflow: visible;
}

.calendar-container {
    padding: var(--spacing-2);
    overflow: visible;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    /* 防止内容溢出 */
    overflow-x: hidden;
}

/* 300px宽度时的特殊优化 */
@media (min-width: 768px) and (max-width: 1024px) {
    .calendar-container {
        padding: var(--spacing-2);
        max-width: 100%;
    }
}

@media (min-width: 1024px) {
    .calendar-container {
        padding: var(--spacing-3);
    }
}

.calendar-header {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-3);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

/* 第一行：视图切换按钮组 */
.calendar-header .calendar-view-switch {
    order: 1;
    width: 100%;
    margin-bottom: 0;
}

/* 第二行：年份和月份下拉框 */
.calendar-header .calendar-title {
    order: 2;
    width: 100%;
}

.calendar-title {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-2);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    min-width: 0;
}

.calendar-select-wrapper {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    min-width: 0;
    flex: 1;
}

.calendar-year-select,
.calendar-month-select {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    min-width: 0;
    /* 确保文字不被截断 */
    text-overflow: ellipsis;
    overflow: visible;
    white-space: nowrap;
    /* 垂直对齐 - 修复文字被切除问题 */
    height: auto;
    min-height: 32px;
    line-height: 1.5;
    padding-top: 6px;
    padding-bottom: 6px;
    vertical-align: middle;
}

.calendar-view-switch {
    width: 100%;
    max-width: 100%;
    display: flex;
    gap: var(--spacing-2);
    box-sizing: border-box;
    flex-shrink: 0;
    align-self: flex-start;
    align-items: stretch;
    margin-bottom: var(--spacing-2);
}

@media (min-width: 768px) {
    .calendar-view-switch {
        width: auto;
        align-self: flex-start;
        align-items: center;
        margin-bottom: var(--spacing-2);
    }
}

.view-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    height: auto;
}

@media (min-width: 768px) {
    .view-btn {
        height: 100%;
        min-height: 32px;
    }
}

.calendar-nav-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--surface-color);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.calendar-nav-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.calendar-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    flex: 1;
    justify-content: center;
}

.calendar-year-btn,
.calendar-month-btn {
    padding: 6px 12px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.calendar-year-btn:hover,
.calendar-month-btn:hover {
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.calendar-view-switch {
    display: flex;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
    padding: 3px;
    background: var(--background-color);
    border-radius: var(--radius-md);
}

.view-btn {
    flex: 1;
    padding: 6px 12px;
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 32px;
    white-space: nowrap;
}

.view-btn.active {
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-sm);
}

.view-btn:hover:not(.active) {
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    margin-bottom: var(--spacing-2);
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    /* 防止网格溢出 */
    min-width: 0;
}

/* 300px宽度时的特殊优化 */
@media (min-width: 768px) and (max-width: 1024px) {
    .calendar-weekdays {
        gap: 1px;
    }
}

.weekday {
    text-align: center;
    font-size: 10px;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 2px 1px;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 300px宽度时的特殊优化 */
@media (min-width: 768px) and (max-width: 1024px) {
    .weekday {
        font-size: 10px;
        padding: 3px 1px;
    }
    
    .calendar-day {
        padding: 4px 2px !important;
        min-height: 48px !important;
    }
    
    .day-number {
        font-size: 11px !important;
    }
    
    .day-count {
        font-size: 9px !important;
        padding: 1px 3px !important;
    }
}

.calendar-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    /* 防止网格溢出 */
    min-width: 0;
}

/* 300px宽度时的特殊优化 */
@media (min-width: 768px) and (max-width: 1024px) {
    .calendar-days {
        gap: 1px;
    }
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 3px 1px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    min-height: 40px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    touch-action: manipulation;
    /* 防止内容溢出 */
    overflow: hidden;
    min-width: 0;
}

.calendar-day:hover {
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--primary-color);
}

.calendar-day.other-month {
    opacity: 0.3;
    cursor: default;
}

.calendar-day.other-month:hover {
    background: var(--surface-color);
    border-color: transparent;
}

.calendar-day.today {
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--primary-color);
    font-weight: 600;
}

.calendar-day.selected {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.calendar-day.selected .day-count {
    background: rgba(255, 255, 255, 0.3);
    color: white;
}

.calendar-day.has-posts {
    font-weight: 500;
}

.day-number {
    font-size: 11px;
    line-height: 1.2;
    margin-bottom: 2px;
    font-weight: 500;
}

@media (min-width: 768px) {
    .day-number {
        font-size: 12px;
        margin-bottom: 3px;
    }
}

@media (min-width: 1024px) {
    .day-number {
        font-size: 13px;
        margin-bottom: 4px;
    }
}

.day-count {
    font-size: 9px;
    padding: 1px 3px;
    border-radius: 8px;
    background: rgba(37, 99, 235, 0.15);
    color: var(--primary-color);
    line-height: 1.2;
    min-width: 16px;
    text-align: center;
    font-weight: 500;
    margin-top: 0;
}

@media (min-width: 768px) {
    .day-count {
        font-size: 9px;
        padding: 1px 4px;
        min-width: 18px;
        margin-top: 0;
    }
}

@media (min-width: 1024px) {
    .day-count {
        font-size: 10px;
    }
}

.calendar-day.selected .day-count {
    background: rgba(255, 255, 255, 0.3);
    color: white;
}

/* 年视图 */
.calendar-year-view {
    padding: var(--spacing-2);
}

.year-months {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-2);
}

.year-month-item {
    padding: var(--spacing-3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    background: var(--surface-color);
}

.year-month-item:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.year-month-item.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-sm);
}

.month-name {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 4px;
}

.month-count {
    font-size: 12px;
    opacity: 0.7;
}

.year-month-item.active .month-count {
    opacity: 0.9;
}

/* 移动设备优化 */
@media (max-width: 767px) {
    .page-title {
        font-size: 1.5rem;
        margin-bottom: var(--spacing-4);
    }
    
    .news-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-2);
    }
    
    .news-actions {
        width: 100%;
        justify-content: space-between;
    }
    
    .ai-news-action-btn {
        padding: 4px 8px !important;
    }
    
    .year-months {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tags-container {
        max-height: 300px;
        overflow-y: auto;
        padding: var(--spacing-2);
    }
    
    .tag-item {
        font-size: 11px;
        padding: 0 8px;
        height: 26px;
        line-height: 26px;
    }
    
    .tag-count {
        height: 16px;
        line-height: 1.2;
    }
    
    .tag-count {
        font-size: 9px;
        padding: 1px 4px;
        min-width: 18px;
    }
    
    .calendar-section {
        max-height: none;
    }
    
    .calendar-container {
        max-height: none;
        overflow: visible;
    }
}