/**
 * 代码块样式
 * 代码高亮、外置行号、复制功能、hover工具栏、折叠功能
 */

/* 行内代码 */
.content code {
    font-family: 'Fira Code', 'Monaco', 'Consolas', monospace;
    font-size: 0.875em;
    background-color: var(--code-bg);
    padding: 0.2em 0.4em;
    border-radius: 4px;
}

/* 代码块容器 */
.code-block {
    position: relative;
    margin: 1.5rem 0;
    border-radius: 8px;
    overflow: hidden;
    background-color: var(--code-bg);
    border: 1px solid var(--border-color);
}

/* 可折叠代码块 */
.code-block-foldable {
    transition: all 0.3s ease;
}

/* 折叠状态 - 使用max-height限制高度 */
.code-block-folded .code-body {
    max-height: calc(var(--folded-lines, 15) * 1.5rem + 2rem);
    overflow: hidden;
    position: relative;
}

/* 折叠状态的渐变遮罩 */
.code-block-folded .code-body::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3rem;
    background: linear-gradient(to bottom, transparent, var(--code-bg));
    pointer-events: none;
}

/* 工具栏 */
.code-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background-color: var(--code-bg);
    border-bottom: 1px solid var(--border-color);
}

/* 语言标签 */
.code-lang {
    font-size: 11px;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-weight: 500;
    padding: 2px 8px;
    background-color: var(--hover-bg);
    border-radius: 4px;
}

/* 按钮容器 */
.code-buttons {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* 折叠按钮 */
.code-fold {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    font-size: 12px;
    color: var(--text-secondary);
    background-color: var(--hover-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.code-fold:hover {
    color: var(--text-color);
    background-color: var(--bg-color);
    border-color: var(--primary-color);
}

.fold-icon {
    font-size: 10px;
    transition: transform 0.2s ease;
}

.fold-text {
    font-size: 12px;
}

/* 复制按钮 */
.code-copy {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    font-size: 12px;
    color: var(--text-secondary);
    background-color: var(--hover-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.code-copy:hover {
    color: var(--text-color);
    background-color: var(--bg-color);
    border-color: var(--primary-color);
}

.code-copy.copied {
    color: #10b981;
    border-color: #10b981;
}

.copy-icon {
    font-size: 14px;
}

.copy-text {
    font-size: 12px;
}

/* 代码主体 - 行号 + 代码内容 */
.code-body {
    display: flex;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

/* 行号列 - 外置，与代码块背景一致 */
.line-numbers {
    display: flex;
    flex-direction: column;
    padding: 1rem 0;
    background-color: var(--code-bg);
    border-right: 1px solid var(--border-color);
    user-select: none;
    flex-shrink: 0;
}

.line-numbers .line-num {
    display: block;
    padding: 0 1rem;
    text-align: right;
    font-family: 'Fira Code', 'Monaco', 'Consolas', monospace;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--text-secondary);
    opacity: 0.6;
    min-width: 3em;
}

/* 代码内容区域 */
.code-content {
    flex: 1;
    overflow-x: auto;
}

.code-content pre {
    margin: 0;
    border-radius: 0;
    background-color: transparent;
}

.code-content pre code {
    display: block;
    padding: 1rem;
    overflow-x: auto;
    background-color: transparent;
    font-size: 0.875rem;
    line-height: 1.5;
    border-radius: 0;
}

/* 代码块滚动条 */
.code-content::-webkit-scrollbar,
.code-content pre code::-webkit-scrollbar {
    height: 6px;
}

.code-content::-webkit-scrollbar-track,
.code-content pre code::-webkit-scrollbar-track {
    background: transparent;
}

.code-content::-webkit-scrollbar-thumb,
.code-content pre code::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
    border-radius: 3px;
}

.code-content::-webkit-scrollbar-thumb:hover,
.code-content pre code::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-secondary);
}

/* 移动端适配 */
@media (max-width: 768px) {
    .code-block {
        margin: 1rem -16px;
        border-radius: 0;
        border-left: none;
        border-right: none;
    }

    .code-toolbar {
        padding: 6px 10px;
    }

    .code-lang {
        font-size: 10px;
        padding: 2px 6px;
    }

    .code-fold,
    .code-copy {
        padding: 3px 8px;
    }

    .fold-text,
    .copy-text {
        display: none;
    }

    .line-numbers {
        padding: 0.75rem 0;
    }

    .line-numbers .line-num {
        padding: 0 0.5rem;
        min-width: 2.5em;
    }

    .code-content pre code {
        padding: 0.75rem;
    }
}