/* 文章增强样式：阅读时间、标签、相关文章、阅读进度 */

/* 阅读进度条 */
#reading-progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    z-index: 9999;
    width: 0%;
    transition: width 0.1s linear;
    box-shadow: 0 1px 4px rgba(102, 126, 234, 0.4);
}

/* 文章元信息 */
.article-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    margin: -0.5rem 0 1.2rem 0;
    color: var(--md-default-fg-color--light);
    font-size: 0.85rem;
}

.article-reading-time {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

/* 标签 */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    width: 100%;
    margin-top: 4px;
}

.article-tags-label {
    color: var(--md-default-fg-color--light);
}

.article-tag {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 999px;
    background: var(--md-primary-fg-color--transparent, rgba(103, 58, 183, 0.1));
    color: var(--md-primary-fg-color);
    font-size: 0.8rem;
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
    border: 1px solid var(--md-primary-fg-color--transparent, rgba(103, 58, 183, 0.2));
}

.article-tag:hover {
    background: var(--md-primary-fg-color);
    color: var(--md-primary-bg-color);
    text-decoration: none;
}

/* 相关文章 */
.related-articles {
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--md-default-fg-color--lightest);
}

.related-articles-title {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--md-default-fg-color);
}

.related-articles-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 12px;
}

.related-article-card {
    display: block;
    padding: 14px 16px;
    border-radius: 8px;
    border: 1px solid var(--md-default-fg-color--lightest);
    background: var(--md-code-bg-color);
    text-decoration: none;
    transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}

.related-article-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-color: var(--md-primary-fg-color--transparent);
    text-decoration: none;
}

.related-article-title {
    font-weight: 600;
    color: var(--md-default-fg-color);
    margin-bottom: 6px;
    font-size: 0.95rem;
}

.related-article-desc {
    color: var(--md-default-fg-color--light);
    font-size: 0.8rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* 标签云页面 */
.tags-cloud-page h1 {
    margin-bottom: 0.5rem;
}

.tags-cloud-desc {
    color: var(--md-default-fg-color--light);
    margin-bottom: 1.5rem;
}

.tags-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 2rem;
}

.tags-cloud .tag-cloud-item {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 999px;
    background: var(--md-code-bg-color);
    color: var(--md-default-fg-color);
    border: 1px solid var(--md-default-fg-color--lightest);
    text-decoration: none;
    transition: all 0.2s;
}

.tags-cloud .tag-cloud-item:hover {
    background: var(--md-primary-fg-color);
    color: var(--md-primary-bg-color);
    border-color: var(--md-primary-fg-color);
    text-decoration: none;
}

.tags-cloud .tag-cloud-count {
    margin-left: 6px;
    opacity: 0.7;
    font-size: 0.85em;
}

.tagged-articles-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.tagged-articles-list li {
    padding: 10px 0;
    border-bottom: 1px solid var(--md-default-fg-color--lightest);
}

.tagged-articles-list a {
    color: var(--md-primary-fg-color);
    font-weight: 500;
    text-decoration: none;
}

.tagged-articles-list a:hover {
    text-decoration: underline;
}

.tagged-articles-list .tagged-article-meta {
    color: var(--md-default-fg-color--light);
    font-size: 0.8rem;
    margin-top: 2px;
}

.tags-back-link {
    display: inline-flex;
    align-items: center;
    margin-bottom: 12px;
    color: var(--md-primary-fg-color);
    text-decoration: none;
    font-size: 0.9rem;
}

.tags-back-link:hover {
    text-decoration: underline;
}

/* 最近阅读侧边栏 */
.recent-reading-widget {
    position: fixed;
    right: 20px;
    bottom: 100px;
    width: 220px;
    max-height: 320px;
    overflow-y: auto;
    background: var(--md-code-bg-color);
    border: 1px solid var(--md-default-fg-color--lightest);
    border-radius: 10px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    padding: 14px;
    z-index: 100;
    font-size: 0.85rem;
    transition: opacity 0.3s, transform 0.3s;
}

.recent-reading-widget.hidden {
    opacity: 0;
    transform: translateX(20px);
    pointer-events: none;
}

.recent-reading-widget-title {
    font-weight: 600;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--md-default-fg-color--lightest);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.recent-reading-widget-close {
    cursor: pointer;
    color: var(--md-default-fg-color--light);
    font-size: 1.1rem;
    line-height: 1;
}

.recent-reading-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.recent-reading-list li {
    margin-bottom: 8px;
}

.recent-reading-list a {
    color: var(--md-default-fg-color);
    text-decoration: none;
    display: block;
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.recent-reading-list a:hover {
    color: var(--md-primary-fg-color);
    text-decoration: underline;
}

.recent-reading-empty {
    color: var(--md-default-fg-color--light);
    font-size: 0.8rem;
}

@media (max-width: 1400px) {
    .recent-reading-widget {
        display: none;
    }
}