/* ============================================================
 * 沐橙文库 v2.3 - 双模式 PDF 查看器（embed 兜底 + PDF.js 增强）
 * ============================================================ */

/* --- 查看器容器 --- */
.zibd-pdf-viewer {
    position: relative;
    background: var(--muted-bg-color);
    border: 1px solid var(--main-border-color);
    border-radius: var(--main-radius);
    margin: 15px 0;
    overflow: hidden;
    max-width: 100%;
    width: 100%;
}

/* --- 顶部工具栏 --- */
.zibd-viewer-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: var(--main-bg-color);
    border-bottom: 1px solid var(--main-border-color);
    flex-wrap: wrap;
    gap: 6px;
}

.zibd-viewer-btns {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* --- 舞台 --- */
.zibd-viewer-stage {
    position: relative;
    background: transparent;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    overflow: hidden;
}

.zibd-scroll-wrap {
    position: relative;
    width: 100%;
    /* 高度由内容撑开，放大时 JS 设 overflow:auto 实现滚动 */
}

/* --- embed 兜底 --- */
.zibd-pdf-embed {
    border: none;
    display: block;
}

/* --- 翻页动画（PDF.js 模式） --- */
@keyframes zibdFlipLeft {
    0%   { transform: rotateY(0deg) translateX(0); opacity: 1; }
    100% { transform: rotateY(-30deg) translateX(-60%); opacity: 0; }
}

@keyframes zibdFlipInRight {
    0%   { transform: translateX(60%); opacity: 0; }
    100% { transform: translateX(0); opacity: 1; }
}

@keyframes zibdFlipRight {
    0%   { transform: rotateY(0deg) translateX(0); opacity: 1; }
    100% { transform: rotateY(30deg) translateX(60%); opacity: 0; }
}

@keyframes zibdFlipInLeft {
    0%   { transform: translateX(-60%); opacity: 0; }
    100% { transform: translateX(0); opacity: 1; }
}

.zibd-flip-left      { animation: zibdFlipLeft    .35s ease-in forwards; }
.zibd-flip-in-right  { animation: zibdFlipInRight .2s  ease-out forwards; }
.zibd-flip-right     { animation: zibdFlipRight   .35s ease-in forwards; }
.zibd-flip-in-left   { animation: zibdFlipInLeft  .2s  ease-out forwards; }

/* --- 全屏（网站内，embed/PDF.js 均生效） --- */
.zibd-fullscreen {
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    z-index: 99999 !important;
    margin: 0 !important;
    border-radius: 0 !important;
    border: none !important;
    display: flex !important;
    flex-direction: column !important;
    overflow: hidden !important;
}

.zibd-fullscreen .zibd-viewer-stage {
    flex: 1;
    min-height: 0;
}

/* 缩放级别文字 */
.zibd-zoom-level {
    display: inline-block;
    min-width: 42px;
    text-align: center;
    user-select: none;
    font-variant-numeric: tabular-nums;
}

/* 移动端工具栏按钮缩小间距 */
@media (max-width: 768px) {
    .zibd-viewer-btns .but.smail {
        padding: 4px 6px;
        font-size: 11px;
    }
    .zibd-zoom-level {
        min-width: 36px;
        font-size: 11px;
    }
    .zibd-viewer-btns {
        gap: 2px;
    }
}

/* --- 按钮可见性 --- */
.zibd-btn-closefs.hide,
.zibd-btn-fullscreen.hide {
    display: none !important;
}

/* --- 底栏 --- */
.zibd-viewer-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 12px;
    background: var(--main-bg-color);
    border-top: 1px solid var(--main-border-color);
    min-height: 32px;
}

/* --- 翻译面板 --- */
.zibd-translate-panel {
    background: var(--main-bg-color);
    border: 1px solid var(--main-border-color);
    border-radius: var(--main-radius);
    margin: 8px 0;
    overflow: hidden;
}
.zibd-translate-header {
    background: var(--muted-bg-color);
}
.zibd-translate-body {
    background: #fafafa;
    padding: 20px 24px;
    max-width: 740px;
    margin: 0 auto;
}
.zibd-translate-body p {
    margin: 0 0 16px 0;
    text-indent: 0;
    line-height: 1.9;
    font-size: 15px;
    color: #2c2c2c;
    text-align: justify;
    word-break: break-word;
    letter-spacing: 0.01em;
}
.zibd-translate-body p + p {
    padding-top: 0;
    border-top: none;
}
/* 短段落 → 标题样式（如 Abstract / Introduction / 1. Background） */
.zibd-translate-body p.zibd-tl-heading {
    margin: 26px 0 12px 0;
    font-size: 16.5px;
    font-weight: 700;
    line-height: 1.5;
    letter-spacing: 0.03em;
    text-align: left;
    color: #111;
    border-bottom: 1px solid #eaeaea;
    padding-bottom: 6px;
}
.zibd-translate-body p.zibd-tl-heading:first-child {
    margin-top: 2px;
}
/* 相邻段落间距 */
.zibd-translate-body p + p:not(.zibd-tl-heading) {
    text-indent: 0;
}

/* 翻译登录提示 */
.zibd-login-prompt {
    cursor: pointer;
}
.zibd-login-prompt .block {
    display: block;
}

/* 翻译面板滚动条美化 */
.zibd-translate-panel.scroll-y::-webkit-scrollbar {
    width: 5px;
}
.zibd-translate-panel.scroll-y::-webkit-scrollbar-thumb {
    background: #d5d5d5;
    border-radius: 8px;
}
.zibd-translate-panel.scroll-y::-webkit-scrollbar-track {
    background: transparent;
}

/* --- 文档列表卡片 --- */
.zibd-doc-item {
    position: relative;
    overflow: hidden;
    text-align: center;
    padding: 20px 15px;
    transition: box-shadow .25s, transform .25s;
}
.zibd-doc-item:hover {
    box-shadow: 0 4px 20px rgba(0,0,0,.08);
    transform: translateY(-2px);
}

.zibd-file-type-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: var(--muted-bg-color);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1px;
}

.zibd-doc-title {
    font-size: 15px;
    line-height: 1.4;
    margin: 10px 0 0;
    min-height: 42px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.zibd-file-card  { clear: both; }
.zibd-info-bar   { clear: both; }

@media (max-width: 768px) {
    .zibd-doc-item { padding: 15px 10px; }
}

/* --- 游客页数限制遮罩 --- */
.zibd-guest-limit {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0,0,0,.75);
    padding: 40px 30px;
    border-radius: var(--main-radius);
    z-index: 10;
    color: #fff;
    text-align: center;
    min-width: 260px;
}

/* --- 帖子列表文档名牌 --- */
.zibd-doc-badge {
    line-height: 1.5;
}
.zibd-doc-badge badge {
    display: inline-block;
    padding: 1px 6px;
    border-radius: 3px;
    font-size: 11px;
    font-weight: 600;
    vertical-align: middle;
}

/* 内容摘要显示（帖子列表） */
.zibd-doc-excerpt {
    background: var(--muted-bg-color);
    border-radius: 4px;
    padding: 6px 10px;
    border-left: 3px solid var(--focus-color);
}
.zibd-doc-excerpt span {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    max-height: 3em;
}

/* ============================================================
 *  打印防护：打印时隐藏 PDF 内容
 * ============================================================ */
@media print {
    .zibd-pdf-viewer,
    .zibd-pdf-viewer *,
    .zibd-viewer-stage,
    .zibd-viewer-stage *,
    .zibd-scroll-wrap,
    .zibd-scroll-wrap *,
    canvas,
    embed,
    .zibd-pdf-embed {
        display: none !important;
        visibility: hidden !important;
        opacity: 0 !important;
        height: 0 !important;
        width: 0 !important;
        overflow: hidden !important;
    }

    .zibd-seo-info {
        display: block !important;
        visibility: visible !important;
        opacity: 1 !important;
        height: auto !important;
        width: auto !important;
    }
}