/* ========================================
 *  代码块复制按钮优化
 *  修复：选中文字 + 增强交互特效
 * ======================================== */

/* 防止复制按钮点击时选中代码文本 */
figure.highlight .copy {
    /* 基础样式优化 */
    opacity: 0.7;
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;  /* 防止按钮文字被选中 */
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    
    /* 按钮尺寸和定位 */
    padding: 4px 8px;
    font-size: 14px;
    color: #363636;
    
    &:hover {
        opacity: 1;
        transform: scale(1.05);
        color: #00d1b2;
    }
    
    /* 复制成功状态 - 增强视觉效果 */
    &.copied {
        color: #48c774 !important;
        opacity: 1 !important;
        animation: copySuccess 0.6s ease;
        
        i {
            &::before {
                content: '\f00c' !important;  /* 对勾图标 */
            }
        }
        
        /* 成功提示背景 */
        &::after {
            content: '已复制!';
            position: absolute;
            right: 100%;
            top: 50%;
            transform: translateY(-50%);
            margin-right: 8px;
            background: #48c774;
            color: white;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 12px;
            white-space: nowrap;
            animation: fadeInOut 2s ease forwards;
        }
    }
    
    /* 复制失败状态 */
    &.error {
        color: #f14668 !important;
        opacity: 1 !important;
        animation: copyError 0.6s ease;
        
        &::after {
            content: '复制失败';
            position: absolute;
            right: 100%;
            top: 50%;
            transform: translateY(-50%);
            margin-right: 8px;
            background: #f14668;
            color: white;
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 12px;
            white-space: nowrap;
            animation: fadeInOut 2s ease forwards;
        }
    }
}

/* 确保figcaption支持相对定位（用于提示框） */
figure.highlight figcaption {
    position: relative;
}

/* 复制成功动画 */
@keyframes copySuccess {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

/* 复制失败动画 */
@keyframes copyError {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-3px); }
    75% { transform: translateX(3px); }
}

/* 提示框淡入淡出 */
@keyframes fadeInOut {
    0% { 
        opacity: 0; 
        transform: translateY(-50%) translateX(10px);
    }
    20% { 
        opacity: 1; 
        transform: translateY(-50%) translateX(0);
    }
    80% { 
        opacity: 1; 
        transform: translateY(-50%) translateX(0);
    }
    100% { 
        opacity: 0; 
        transform: translateY(-50%) translateX(-10px);
    }
}

/* 代码块整体优化 */
figure.highlight {
    /* 防止代码块被意外全选 */
    -webkit-user-select: text;
    -moz-user-select: text;
    -ms-user-select: text;
    user-select: text;
}