/* ==========================================================================
   文章详情页样式 – 与全局完全隔离
   摄影画册风格：暗色底、轻量无衬线、宽字距大写元信息、发丝描边
   ========================================================================== */

/* ----- 文章页面容器 ----- */
.article-page .main-content {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 3rem;
    text-align: left;
}

.container--article {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ----- 文章头部（居中） ----- */
.article-header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.article-header h1 {
    font-family: var(--font-sans);
    font-size: clamp(1.8rem, 5vw, 2.8rem);
    font-weight: 300;
    letter-spacing: 0.08em;
    color: var(--text-primary);
    margin-bottom: 1.4rem;
    line-height: 1.25;
}

/* 元数据行：日期、阅读时间 —— 居中 */
.article-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2.5rem;
    flex-wrap: wrap;
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 1.4rem;
}

.article-meta-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.article-meta-item img {
    vertical-align: middle;
}

/* 标签列表 —— 居中 */
.article-header .article-tags {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}

.article-header .tag {
    display: inline-block;
    padding: 0.3rem 1rem;
    background: var(--accent-light);
    border: 1px solid rgba(215, 196, 168, 0.25);
    border-radius: 0;
    font-size: 11px;
    font-weight: 400;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--accent-color);
}

/* ----- 文章正文（左对齐，不居中） ----- */
.article-body {
    max-width: 760px;
    color: var(--text-primary);
    line-height: 2;
    text-align: left;
    margin: 0 auto;
}

.article-body h2 {
    font-family: var(--font-sans);
    font-size: 1.5rem;
    font-weight: 400;
    letter-spacing: 0.06em;
    margin: 2.4rem 0 1rem;
    color: var(--text-primary);
    border-left: 2px solid var(--accent-color);
    padding-left: 1rem;
}

.article-body h3 {
    font-family: var(--font-sans);
    font-size: 1.2rem;
    font-weight: 400;
    letter-spacing: 0.04em;
    margin: 1.8rem 0 0.8rem;
    color: var(--text-primary);
}

.article-body h4,
.article-body h5,
.article-body h6 {
    font-weight: 500;
    margin: 1.4rem 0 0.6rem;
    color: var(--text-primary);
}
.article-body h4 { font-size: 1.1rem; }
.article-body h5 { font-size: 1rem; }
.article-body h6 { font-size: 0.95rem; }

.article-body p {
    margin-bottom: 1.3rem;
    color: var(--text-secondary);
    font-weight: 300;
}

.article-body ul,
.article-body ol {
    margin: 0 0 1.3rem 2rem;
    color: var(--text-secondary);
    font-weight: 300;
}

.article-body li {
    margin-bottom: 0.5rem;
}

.article-body a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 400;
    border-bottom: 1px solid rgba(215, 196, 168, 0.35);
    transition: border-color var(--transition), color var(--transition);
}
.article-body a:hover {
    color: #fff;
    border-bottom-color: #fff;
}

.article-body blockquote {
    margin: 1.4rem 0;
    padding: 0.4rem 0 0.4rem 1.2rem;
    border-left: 2px solid var(--accent-color);
    color: var(--text-secondary);
    font-style: italic;
    font-weight: 300;
}

.article-body hr {
    border: none;
    height: 1px;
    background: var(--border-strong);
    margin: 1.8rem 0;
}

.article-body img {
    border-radius: var(--radius-sm);
    max-width: 100%;
}

/* ----- 代码块 & 复制按钮 ----- */
.article-body pre {
    position: relative;
    background: #0d0d0d;
    padding: 1.5rem;
    border-radius: 0;
    overflow-x: auto;
    border: 1px solid var(--border-strong);
    margin-bottom: 1.4rem;
}

.article-body pre code {
    background: none;
    padding: 0;
    color: #dcdcdc;
    font-family: ui-monospace, 'Cascadia Code', 'Courier New', monospace;
    font-size: 0.9em;
    line-height: 1.7;
}

.article-body code {
    background: var(--hover-bg);
    padding: 0.2rem 0.5rem;
    border-radius: 0;
    border: 1px solid var(--border-color);
    font-family: ui-monospace, 'Cascadia Code', 'Courier New', monospace;
    font-size: 0.9em;
    color: var(--accent-color);
}

/* 复制按钮 */
.article-body pre .copy-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(255, 255, 255, 0.06);
    color: #bbb;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 0;
    padding: 4px 12px;
    font-size: 11px;
    letter-spacing: 0.15em;
    font-family: var(--font-sans);
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.2s ease, background-color 0.2s ease;
    backdrop-filter: blur(4px);
    z-index: 2;
}

.article-body pre:hover .copy-btn {
    opacity: 1;
}

.article-body pre .copy-btn:hover {
    background: rgba(255, 255, 255, 0.14);
    color: #fff;
}

.article-body pre .copy-btn.copied {
    background: var(--accent-dark);
    border-color: var(--accent-color);
    color: #fff;
    opacity: 1;
}

/* ----- 表格 ----- */
.table-wrapper {
    overflow-x: auto;
    margin-bottom: 1.3rem;
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-color);
}

.article-body th,
.article-body td {
    border: 1px solid var(--border-color);
    padding: 0.75rem;
    text-align: left;
}

.article-body th {
    background: var(--hover-bg);
    font-weight: 500;
    letter-spacing: 0.08em;
}

/* 任务列表（GitHub 风格） */
.task-list-item {
    list-style: none;
    margin-left: -1rem;
}
.task-list-item input {
    margin-right: 0.5rem;
}
.contains-task-list {
    padding-left: 1.5rem;
}

/* 脚注 */
.footnotes {
    font-size: 0.9rem;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* ----- 文章底部 ----- */
.article-footer {
    margin-top: 3.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.back-link {
    display: inline-block;
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 400;
    font-size: 11px;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    transition: color var(--transition), transform var(--transition);
}

.back-link:hover {
    color: #fff;
    transform: translateX(-4px);
}

.back-link::before {
    content: '← ';
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media screen and (max-width: 768px) {
    .container--article {
        padding: 0 1rem;
    }

    .article-body {
        max-width: 100%;
    }

    .article-body ul,
    .article-body ol {
        margin-left: 1.5rem;
    }

    .article-header h1 {
        font-size: 1.7rem;
    }

    .article-meta {
        gap: 1.2rem;
        font-size: 10px;
    }
}