/* ========================================
   自定义样式统一管理
   富文本编辑器、查看页、CHM导出 共用
   现代浏览器显示美观效果，IE自动降级
   ======================================== */

/* 图片全局样式 */
img {
    max-width: 680px;
    height: auto;
    transition: transform 0.2s ease;
}

/* 红色加粗高亮 */
.fb {
    color: #ef2222;
    font-weight: bold;
    padding: 2px 6px;
    background: rgba(239, 34, 34, 0.08);
    border-radius: 3px;
}

/* 蓝色加粗高亮 */
.fba {
    color: #0000ff;
    font-weight: bold;
    padding: 2px 6px;
    background: rgba(0, 0, 255, 0.08);
    border-radius: 3px;
}

/* 缩略图固定宽度 */
.thumbnail {
    width: 600px;
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

/* 一键复制按钮 */
.copy-btn {
    display: inline-block;
    padding: 6px 16px;
    background-color: #667eea; /* IE兼容：纯色兜底 */
    background-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
    margin: 0 6px;
    vertical-align: middle;
    font-weight: 500;
}

.copy-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.35);
}

/* 图片灯箱 - 网页版+CHM通用（兼容IE内核） */
.img-lightbox{
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #000000;
    background: rgba(0,0,0,0.92);
    z-index: 9999;
    padding: 20px;
    cursor: pointer;
    text-align: center;
}
.img-lightbox:before {
    content: '';
    display: inline-block;
    height: 100%;
    vertical-align: middle;
}
.img-lightbox.show{
    display: block;
}
.lightbox-img{
    max-width: 100%;
    max-height: 92vh;
    width: auto;
    height: auto;
    vertical-align: middle;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
}

/* 代码块样式（CHM导出用） */
pre {
    background: #1e1e2e;
    color: #cdd6f4;
    padding: 16px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 12px 0;
    font-size: 13px;
    line-height: 1.6;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

/* 引用块样式（CHM导出用） */
blockquote {
    border-left: 4px solid #667eea;
    padding: 12px 20px;
    margin: 16px 0;
    background: #f8f9ff;
    background: linear-gradient(90deg, #f8f9ff 0%, #fcfcff 100%);
    color: #4a5568;
    border-radius: 0 8px 8px 0;
}

/* 表格复制容器 */
.table-wrapper {
    position: relative;
    margin: 16px 0;
}
.table-wrapper .copy-table-btn {
    position: absolute;
    top: 0;
    right: 0;
    z-index: 10;
    padding: 4px 12px;
    background-color: #667eea;
    background-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #ffffff;
    border: none;
    border-radius: 0 6px 0 6px;
    cursor: pointer;
    font-size: 12px;
    opacity: 0;
    transition: opacity 0.2s ease;
}
.table-wrapper:hover .copy-table-btn {
    opacity: 1;
}
.table-wrapper table {
    margin-top: 0 !important;
}

/* 表格基础样式优化 */
table {
    border-collapse: collapse;
    width: 100%;
    margin: 16px 0;
    font-size: 14px;
}
table th, table td {
    border: 1px solid #e2e8f0;
    padding: 8px 12px;
    text-align: left;
}
table th {
    background-color: #f8f9ff;
    font-weight: 600;
    color: #4a5568;
}
table tr:nth-child(even) {
    background-color: #fcfcff;
}