/**
 * PluginCodeEnhance - 折叠、高亮、行号、标题栏样式
 * 所有类名以 ce- 前缀避免主题冲突
 * 配色由 JS 根据高亮主题动态注入 CSS 变量
 */

:root {
    --ce-btn-color: #fff;
    --ce-btn-bg: rgba(0, 0, 0, 0.55);
    --ce-btn-hover-bg: rgba(0, 0, 0, 0.75);
    --ce-btn-radius: 16px;
    --ce-header-bg: #e8ecf1;
    --ce-header-color: #24292e;
    --ce-line-num-color: #adb5bd;
    --ce-line-num-width: 3em;
    --ce-code-bg: #fff;
    --ce-border-color: #d1d5da;
}

/* ==================== 代码块容器 ==================== */
.ce-fold-wrap {
    margin: 16px 0;
    border-radius: 8px;
    background: var(--ce-code-bg);
    border: 1px solid var(--ce-border-color);
    position: relative;
    overflow: visible;
}

.ce-fold-wrap > pre {
    position: relative;
    margin: 0;
    border: none;
    box-shadow: none;
    background: transparent !important;
}

/* ==================== 标题栏 ==================== */
.ce-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 14px;
    background: var(--ce-header-bg);
    border-bottom: 1px solid var(--ce-border-color);
    border-radius: 8px 8px 0 0;
    font-size: 12px;
    color: var(--ce-header-color);
    user-select: none;
}

.ce-header-dots {
    display: flex;
    gap: 6px;
}

.ce-header-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.ce-header-dot--red { background: #ff5f57; }
.ce-header-dot--yellow { background: #febc2e; }
.ce-header-dot--green { background: #28c840; }

.ce-header-lang {
    font-family: monospace;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 11px;
}

.ce-header-copy {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 12px;
    cursor: pointer;
    background: transparent;
    border: 1px solid var(--ce-border-color);
    color: var(--ce-header-color);
    transition: all 0.15s;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    min-height: 28px;
    display: flex;
    align-items: center;
}

.ce-header-copy:hover {
    background: rgba(128, 128, 128, 0.12);
}

.ce-header-copy:active {
    background: rgba(128, 128, 128, 0.2);
    transform: scale(0.98);
}

.ce-header-copy--copied {
    color: #28c840;
    border-color: #28c840;
}

/* 标题栏右侧操作按钮容器 */
.ce-header-actions {
    display: flex;
    gap: 6px;
    align-items: center;
}

/* 折叠/展开按钮 */
.ce-header-fold {
    border-radius: 6px;
    font-size: 12px;
    cursor: pointer;
    background: transparent;
    border: 1px solid var(--ce-border-color);
    color: var(--ce-header-color);
    transition: all 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 28px;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

.ce-header-fold:hover {
    background: rgba(128, 128, 128, 0.12);
}

.ce-header-fold:active {
    background: rgba(128, 128, 128, 0.2);
    transform: scale(0.98);
}

.ce-header-fold-icon {
    font-size: 9px;
    transition: transform 0.2s;
    line-height: 1;
}

/* 默认显示"展开"图标（▼），隐藏"收起"图标（◀） */
.ce-header-fold-icon--fold {
    display: none;
}

/* 完全折叠状态：显示"收起"图标（◀），隐藏"展开"图标（▼） */
.ce-header-fold--folded .ce-header-fold-icon--unfold {
    display: none;
}

.ce-header-fold--folded .ce-header-fold-icon--fold {
    display: inline;
}

/* 完全折叠：隐藏 pre 和底部按钮 */
.ce-fully-folded > pre {
    display: none !important;
}

.ce-fully-folded > .ce-expand-btn,
.ce-fully-folded > .ce-collapse-btn {
    display: none !important;
}

.ce-fully-folded {
    border-bottom: none;
}

.ce-fully-folded > .ce-header {
    border-radius: 8px;
    border-bottom: none;
    cursor: pointer;
}

.ce-fully-folded > .ce-header:hover {
    filter: brightness(0.95);
}

/* 有标题栏时，pre 不需要顶部圆角 */
.ce-fold-wrap:has(.ce-header) > pre {
    border-radius: 0 0 8px 8px;
}

/* ==================== 行号（Grid 布局）==================== */
.ce-code-grid {
    display: grid;
    grid-template-columns: var(--ce-line-num-width) 1fr;
    gap: 0;
    width: 100%;
}

.ce-line-num {
    grid-column: 1;
    width: var(--ce-line-num-width);
    min-width: var(--ce-line-num-width);
    padding: 0 8px 0 12px;
    text-align: right;
    color: var(--ce-line-num-color);
    font-size: 0.85em;
    font-family: monospace;
    line-height: inherit;
    user-select: none;
    white-space: nowrap;
}

.ce-line-code {
    grid-column: 2;
    padding: 0 12px 0 8px;
    white-space: pre;
    line-height: inherit;
}

.ce-code-grid > .ce-line-num:nth-child(odd):hover + .ce-line-code,
.ce-code-grid > .ce-line-code:nth-child(even):hover {
    background: rgba(128, 128, 128, 0.05);
}

/* ==================== 代码折叠（收缩状态） ==================== */
.ce-code-fold {
    max-height: var(--ce-fold-height, 320px) !important;
    overflow-y: auto !important;
    overflow-x: auto !important;
    position: relative;
    transition: max-height 0.35s ease;
    border: none;
    box-shadow: none;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.ce-code-fold::-webkit-scrollbar {
    display: none;
    width: 0;
    height: 0;
}

/* ==================== 代码展开状态 ==================== */
.ce-code-unfold {
    max-height: none !important;
    overflow: auto !important;
    border: none;
    box-shadow: none;
}

/* ==================== 收缩渐变遮罩 ==================== */
.ce-code-fold::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: linear-gradient(transparent, var(--ce-code-bg));
    pointer-events: none;
    z-index: 1;
}

.ce-code-unfold::after {
    display: none;
}

/* ==================== 展开/收起按钮（通用） ==================== */
.ce-expand-btn,
.ce-img-expand-btn,
.ce-collapse-btn {
    padding: 5px 14px;
    border-radius: var(--ce-btn-radius);
    font-size: 12px;
    line-height: 1.4;
    cursor: pointer;
    background: var(--ce-btn-bg);
    border: none;
    color: var(--ce-btn-color);
    transition: all 0.2s;
    user-select: none;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    letter-spacing: 0.5px;
}

.ce-expand-btn:hover,
.ce-img-expand-btn:hover,
.ce-collapse-btn:hover {
    background: var(--ce-btn-hover-bg);
}

/* 收缩状态：展开按钮 sticky 固定在滚动容器底部 */
.ce-fold-wrap > .ce-expand-btn {
    position: sticky;
    bottom: 10px;
    z-index: 2;
    display: flex;
    margin: -36px auto 10px;
    pointer-events: auto;
}

/* 展开状态：收起按钮 sticky 固定在滚动容器底部 */
.ce-collapse-btn {
    position: sticky;
    bottom: 10px;
    z-index: 2;
    display: flex;
    margin: 8px auto;
    pointer-events: auto;
}

/* 图片展开按钮居中悬浮在底部 */
.ce-img-expand-btn {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.ce-img-expand-btn:hover {
    transform: translateX(-50%) scale(1.03);
}

.ce-expand-icon {
    font-size: 10px;
    transition: transform 0.2s;
    line-height: 1;
}

/* ==================== 长图折叠 ==================== */
.ce-img-wrap {
    position: relative;
    display: inline-block;
    max-width: 100%;
}

.ce-img-wrap.ce-img-folded {
    max-height: var(--ce-img-fold-height, 240px);
    overflow: hidden;
    display: block;
    transition: max-height 0.35s ease;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.ce-img-wrap.ce-img-folded::-webkit-scrollbar {
    display: none;
    width: 0;
    height: 0;
}

.ce-img-wrap.ce-img-unfolded {
    max-height: none !important;
    overflow: visible;
}

.ce-img-wrap.ce-img-folded::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.25));
    pointer-events: none;
    z-index: 1;
}

.ce-img-wrap.ce-img-unfolded::after {
    display: none;
}

/* ==================== 响应式优化 ==================== */
@media (max-width: 768px) {
    .ce-expand-btn,
    .ce-img-expand-btn,
    .ce-collapse-btn {
        padding: 4px 10px;
        font-size: 11px;
    }

    .ce-line-num {
        width: 2.5em;
        min-width: 2.5em;
        padding: 0 4px 0 8px;
    }
}