/* =====================
   文章详情页
   ===================== */
.article-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 120px 1.5rem 4rem;
}

/* 面包屑 */
.article-breadcrumb {
    font-size: 0.82rem;
    color: var(--gray);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.article-breadcrumb a {
    color: var(--primary);
    text-decoration: none;
}

.article-breadcrumb a:hover {
    text-decoration: underline;
}

/* 双栏布局 */
.article-layout {
    display: grid;
    grid-template-columns: 230px 1fr;
    gap: 1.75rem;
    align-items: start;
}

/* =====================
   侧边栏 - 同版块文章
   ===================== */
.article-sidebar {
    position: sticky;
    top: 90px;
}

.sidebar-board-info {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 1.25rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.sidebar-board-info .board-icon {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.sidebar-board-info h4 {
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.25rem;
}

.sidebar-board-info p {
    font-size: 0.76rem;
    color: var(--gray);
}

.sidebar-board-back {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.78rem;
    color: var(--primary);
    text-decoration: none;
    margin-top: 0.75rem;
}

.sidebar-board-back:hover {
    text-decoration: underline;
}

/* 侧边文章列表 */
.sidebar-articles {
    background: var(--white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.sidebar-articles-header {
    padding: 0.75rem 1rem;
    background: var(--gray-bg);
    border-bottom: 1px solid var(--border);
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sidebar-article-item {
    display: block;
    padding: 0.7rem 1rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.82rem;
    color: var(--dark);
    text-decoration: none;
    transition: background 0.15s;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-article-item:last-child {
    border-bottom: none;
}

.sidebar-article-item:hover,
.sidebar-article-item.current {
    background: rgba(37, 99, 235, 0.06);
    color: var(--primary);
}

.sidebar-article-item.current {
    font-weight: 600;
    border-left: 3px solid var(--primary);
    padding-left: calc(1rem - 3px);
}

/* =====================
   文章主体
   ===================== */
.article-main {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    min-width: 0;
}

/* 文章头部 */
.article-header {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.article-header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--dark);
    line-height: 1.35;
    margin-bottom: 1rem;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
    font-size: 0.8rem;
    color: var(--gray);
}

.article-meta-item {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.article-meta-item i {
    font-size: 0.75rem;
}

/* 分享区域 */
.article-share {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 1.5rem;
    padding: 1rem 1.25rem;
    background: var(--gray-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.article-share-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.article-share-label i {
    color: var(--primary);
}

.article-share-url {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.article-share-url input {
    flex: 1;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.8rem;
    font-family: var(--font-mono);
    background: var(--white);
    color: var(--dark);
    min-width: 0;
}

.article-share-url input:focus {
    outline: none;
    border-color: var(--primary);
}

.btn-copy-link {
    padding: 0.5rem 0.875rem;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius);
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.btn-copy-link:hover {
    opacity: 0.85;
}

.btn-copy-link.copied {
    background: var(--success);
}

.article-share-social {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding-left: 0.75rem;
    border-left: 1px solid var(--border);
}

.btn-social-share {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: transform 0.2s, opacity 0.2s;
    font-size: 0.875rem;
}

.btn-social-share:hover {
    transform: scale(1.1);
    opacity: 0.85;
}

.btn-social-share.wechat { background: #07c160; }
.btn-social-share.qq { background: #12b7f5; }
.btn-social-share.weibo { background: #e6162d; }
.btn-social-share.qzone { background: #ffc452; }

.article-tag {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    background: rgba(37, 99, 235, 0.08);
    color: var(--primary);
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
    text-decoration: none;
}

/* 特色图片 */
.article-thumbnail {
    width: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 2rem;
    max-height: 360px;
}

.article-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* 富文本内容区域 */
.article-body {
    color: var(--dark);
    line-height: 1.9;
    font-size: 0.95rem;
}

.article-body h2 {
    font-size: 1.35rem;
    font-weight: 700;
    margin: 2rem 0 1rem;
    padding-left: 0.75rem;
    border-left: 4px solid var(--primary);
    color: var(--dark);
}

.article-body h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 1.5rem 0 0.75rem;
    color: var(--dark);
}

.article-body h4 {
    font-size: 1rem;
    font-weight: 600;
    margin: 1.25rem 0 0.5rem;
    color: var(--dark);
}

.article-body p {
    margin-bottom: 1rem;
    color: #374151;
}

.article-body a {
    color: var(--primary);
    text-decoration: underline;
}

.article-body ul,
.article-body ol {
    padding-left: 1.75rem;
    margin-bottom: 1rem;
}

.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }

.article-body li {
    margin-bottom: 0.4rem;
    color: #374151;
}

.article-body blockquote {
    margin: 1.5rem 0;
    padding: 1rem 1.5rem;
    background: #f0f4ff;
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius) var(--radius) 0;
    color: var(--dark);
    font-style: italic;
}

.article-body code {
    background: #f3f4f6;
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.875em;
    color: #e11d48;
}

.article-body pre {
    background: #1e293b;
    color: #e2e8f0;
    padding: 1.25rem 1.5rem;
    border-radius: var(--radius-lg);
    overflow-x: auto;
    margin: 1.5rem 0;
    font-size: 0.875rem;
    line-height: 1.7;
}

.article-body pre code {
    background: none;
    padding: 0;
    color: inherit;
    font-size: inherit;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.875rem;
}

.article-body th {
    background: var(--gray-bg);
    padding: 0.6rem 1rem;
    text-align: left;
    font-weight: 600;
    border: 1px solid var(--border);
}

.article-body td {
    padding: 0.6rem 1rem;
    border: 1px solid var(--border);
    color: #374151;
}

.article-body tr:nth-child(even) td {
    background: #fafafa;
}

.article-body img {
    max-width: 100%;
    border-radius: var(--radius-lg);
    margin: 1rem 0;
}

/* 上下篇导航 */
.article-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
}

.article-nav-item {
    padding: 1rem 1.25rem;
    background: var(--gray-bg);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid var(--border);
}

.article-nav-item:hover {
    background: rgba(37, 99, 235, 0.06);
    border-color: var(--primary);
}

.article-nav-item.prev { text-align: left; }
.article-nav-item.next { text-align: right; }

.article-nav-label {
    font-size: 0.72rem;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.article-nav-item.next .article-nav-label {
    justify-content: flex-end;
}

.article-nav-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 文章统计数字 */
.article-meta-item #stat-views,
.article-meta-item #stat-likes,
.article-meta-item #stat-shares {
    font-weight: 600;
    color: var(--dark);
}

#meta-like-icon.liked {
    color: #ef4444;
}

/* 点赞区域 */
.article-like-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    margin-top: 2rem;
    padding: 2rem 0;
    border-top: 1px solid var(--border);
}

.btn-like {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.75rem 2.5rem;
    background: var(--white);
    border: 2px solid var(--border);
    border-radius: 999px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark);
    cursor: pointer;
    transition: all 0.25s;
    user-select: none;
}

.btn-like:hover {
    border-color: #ef4444;
    color: #ef4444;
    background: #fff5f5;
    transform: scale(1.04);
}

.btn-like.liked {
    border-color: #ef4444;
    background: #ef4444;
    color: #fff;
}

.btn-like.liked:hover {
    background: #dc2626;
    border-color: #dc2626;
    transform: scale(1.04);
}

.btn-like i {
    font-size: 1.1rem;
    transition: transform 0.3s;
}

.btn-like.liked i,
.btn-like:hover i {
    animation: heartbeat 0.35s ease;
}

@keyframes heartbeat {
    0%   { transform: scale(1); }
    50%  { transform: scale(1.3); }
    100% { transform: scale(1); }
}

.btn-like #like-count {
    font-size: 1rem;
}

.like-tip {
    font-size: 0.75rem;
    color: var(--gray);
    margin: 0;
}

/* 响应式 */
@media (max-width: 768px) {
    .article-layout {
        grid-template-columns: 1fr;
    }

    .article-sidebar {
        position: static;
    }

    .article-main {
        padding: 1.5rem;
    }

    .article-nav {
        grid-template-columns: 1fr;
    }

    .article-share {
        flex-wrap: wrap;
    }

    .article-share-url {
        width: 100%;
        order: 1;
    }

    .article-share-label {
        order: 0;
        width: 100%;
        margin-bottom: 0.5rem;
    }

    .article-share-social {
        border-left: none;
        padding-left: 0;
        padding-top: 0.75rem;
        width: 100%;
        order: 2;
    }
}