/* Ahrefs 文章样式 - 仅用于预览区 */

.preview-content {
    /* Ahrefs 配色 */
    --ahrefs-blue: #0066FF;
    --ahrefs-orange: #FF7A00;
    --ahrefs-text: #1A1A1A;
    --ahrefs-text-light: #4A5568;
    --ahrefs-border: #E2E8F0;
    --ahrefs-bg-light: #F7FAFC;
    --ahrefs-code-bg: #F5F7FA;

    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 14px;
    line-height: 1.7;
    color: var(--ahrefs-text);
}

/* ===== 标题样式 ===== */
.preview-content h1,
.preview-content h2,
.preview-content h3,
.preview-content h4,
.preview-content h5,
.preview-content h6 {
    margin-top: 2em;
    margin-bottom: 0.75em;
    font-weight: 700;
    line-height: 1.3;
    color: var(--ahrefs-text);
}

.preview-content h1:first-child,
.preview-content h2:first-child,
.preview-content h3:first-child {
    margin-top: 0;
}

.preview-content h1 {
    font-size: 2em;
    line-height: 1.2;
    border-bottom: 3px solid var(--ahrefs-blue);
    padding-bottom: 0.3em;
    margin-bottom: 1em;
}

.preview-content h2 {
    font-size: 1.6em;
    border-bottom: 2px solid var(--ahrefs-border);
    padding-bottom: 0.3em;
}

.preview-content h3 {
    font-size: 1.3em;
}

.preview-content h4 {
    font-size: 1.15em;
}

.preview-content h5 {
    font-size: 1.05em;
}

.preview-content h6 {
    font-size: 0.95em;
    color: var(--ahrefs-text-light);
}

/* ===== 段落和文本 ===== */
.preview-content p {
    margin-bottom: 1.5em;
    line-height: 1.8;
}

.preview-content strong {
    font-weight: 700;
    color: var(--ahrefs-text);
}

.preview-content em {
    font-style: italic;
}

.preview-content del {
    text-decoration: line-through;
    color: var(--ahrefs-text-light);
}

/* ===== 链接 ===== */
.preview-content a {
    color: var(--ahrefs-blue);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: all 0.2s ease;
}

.preview-content a:hover {
    border-bottom-color: var(--ahrefs-blue);
}

/* ===== 列表 ===== */
.preview-content ul,
.preview-content ol {
    margin-bottom: 1.5em;
    padding-left: 2em;
}

.preview-content li {
    margin-bottom: 0.5em;
    line-height: 1.8;
}

.preview-content li > p {
    margin-bottom: 0.5em;
}

.preview-content ul {
    list-style-type: disc;
}

.preview-content ul ul {
    list-style-type: circle;
}

.preview-content ul ul ul {
    list-style-type: square;
}

.preview-content ol {
    list-style-type: decimal;
}

/* ===== 引用块 ===== */
.preview-content blockquote {
    margin: 1.5em 0;
    padding: 1em 1.5em;
    border-left: 4px solid var(--ahrefs-blue);
    background-color: var(--ahrefs-bg-light);
    color: var(--ahrefs-text-light);
    font-style: italic;
}

.preview-content blockquote p:last-child {
    margin-bottom: 0;
}

.preview-content blockquote cite {
    display: block;
    margin-top: 0.5em;
    font-size: 0.9em;
    color: var(--ahrefs-text-light);
}

/* ===== 代码 ===== */
.preview-content code {
    padding: 0.2em 0.4em;
    margin: 0;
    font-size: 0.9em;
    background-color: var(--ahrefs-code-bg);
    border-radius: 4px;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    color: var(--ahrefs-orange);
    font-weight: 500;
}

.preview-content pre {
    margin: 1.5em 0;
    padding: 1.5em;
    background-color: #2D2D2D;
    border-radius: 8px;
    overflow-x: auto;
    line-height: 1.6;
}

.preview-content pre code {
    padding: 0;
    margin: 0;
    font-size: 0.9em;
    color: #F8F8F2;
    background-color: transparent;
    border-radius: 0;
}

/* ===== 表格 ===== */
.preview-content table {
    width: 100%;
    margin: 1.5em 0;
    border-collapse: collapse;
    border-spacing: 0;
    font-size: 0.95em;
}

.preview-content table thead {
    background-color: var(--ahrefs-bg-light);
}

.preview-content table th {
    padding: 12px 16px;
    text-align: left;
    font-weight: 700;
    color: var(--ahrefs-text);
    border: 1px solid var(--ahrefs-border);
}

.preview-content table td {
    padding: 12px 16px;
    border: 1px solid var(--ahrefs-border);
}

.preview-content table tr:nth-child(even) {
    background-color: var(--ahrefs-bg-light);
}

.preview-content table tr:hover {
    background-color: #EDF2F7;
}

/* ===== 水平分隔线 ===== */
.preview-content hr {
    height: 0;
    margin: 2em 0;
    overflow: hidden;
    background: transparent;
    border: 0;
    border-bottom: 2px solid var(--ahrefs-border);
}

/* ===== 图片 ===== */
.preview-content img {
    max-width: 100%;
    height: auto;
    margin: 1.5em 0;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* ===== 任务列表 ===== */
.preview-content input[type="checkbox"] {
    margin-right: 0.5em;
    vertical-align: middle;
}

.preview-content .task-list-item {
    list-style-type: none;
}

.preview-content .task-list-item input[type="checkbox"] {
    margin-left: -1.5em;
}

/* ===== 高亮文本 ===== */
.preview-content mark {
    background-color: #FFF3CD;
    padding: 0.1em 0.3em;
    border-radius: 3px;
}

/* ===== 键盘按键 ===== */
.preview-content kbd {
    display: inline-block;
    padding: 3px 5px;
    font-size: 0.85em;
    line-height: 1;
    color: var(--ahrefs-text);
    vertical-align: middle;
    background-color: var(--ahrefs-bg-light);
    border: 1px solid var(--ahrefs-border);
    border-radius: 3px;
    box-shadow: inset 0 -1px 0 var(--ahrefs-border);
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

/* ===== 脚注 ===== */
.preview-content .footnote {
    font-size: 0.9em;
    color: var(--ahrefs-text-light);
}

.preview-content .footnote-ref {
    text-decoration: none;
    color: var(--ahrefs-blue);
}

.preview-content .footnote-ref:hover {
    text-decoration: underline;
}

/* ===== 定义列表 ===== */
.preview-content dl {
    margin: 1.5em 0;
}

.preview-content dt {
    font-weight: 700;
    margin-top: 1em;
}

.preview-content dd {
    margin-left: 2em;
    margin-bottom: 1em;
}

/* ===== 缩写 ===== */
.preview-content abbr[title] {
    border-bottom: 1px dotted var(--ahrefs-text-light);
    cursor: help;
    text-decoration: none;
}

/* ===== 引用和来源 ===== */
.preview-content cite {
    font-style: italic;
}

/* ===== 特殊样式 ===== */
.preview-content .highlight {
    background-color: #FFF9C4;
    padding: 0.1em 0.3em;
    border-radius: 3px;
}

.preview-content .note {
    padding: 1em 1.5em;
    margin: 1.5em 0;
    background-color: #E3F2FD;
    border-left: 4px solid var(--ahrefs-blue);
    border-radius: 4px;
}

.preview-content .warning {
    padding: 1em 1.5em;
    margin: 1.5em 0;
    background-color: #FFF3E0;
    border-left: 4px solid var(--ahrefs-orange);
    border-radius: 4px;
}

.preview-content .tip {
    padding: 1em 1.5em;
    margin: 1.5em 0;
    background-color: #E8F5E9;
    border-left: 4px solid #4CAF50;
    border-radius: 4px;
}

/* ===== 响应式调整 ===== */
@media (max-width: 768px) {
    .preview-content {
        font-size: 16px;
    }
    
    .preview-content h1 {
        font-size: 2em;
    }
    
    .preview-content h2 {
        font-size: 1.75em;
    }
    
    .preview-content h3 {
        font-size: 1.5em;
    }
    
    .preview-content table {
        font-size: 0.85em;
    }
    
    .preview-content table th,
    .preview-content table td {
        padding: 8px 12px;
    }
}

/* ===== 打印样式 ===== */
@media print {
    .preview-content {
        font-size: 12pt;
        line-height: 1.6;
    }
    
    .preview-content a {
        color: #000;
        text-decoration: underline;
    }
    
    .preview-content pre {
        background-color: #f5f5f5;
        border: 1px solid #ccc;
    }
    
    .preview-content pre code {
        color: #000;
    }
}