/* 知识库海报导出样式（用于图片长图导出）
 * 色系参考 bookmind 暖木质 / 琥珀主题（accent warm amber + surface warm paper）
 * 所有色值使用显式值，不依赖主题变量，保证暗色模式下截图仍为明亮风格
 *
 * ⚠️ 「不依赖主题变量」只挡得住这份文件自己写的规则；正文 HTML 是从条目原样搬进来的，
 * 全站主题（reading-theme.css / kb-link.css）里凡是**按元素或按正文类名**命中的规则照样会
 * 落到海报上——夜间模式下 blockquote 被裸元素选择器 `blockquote { … !important }` 涂成深底、
 * `a.kb-link` 拿到暗色的 --kb-link-* 变成浅蓝，导出的图就是「白纸上一块黑」。
 * 因此：① 海报根节点重新声明可能泄漏进来的 --kb-link-* 令牌；② 与主题 !important 规则
 * 撞车的属性（blockquote 那几项）在这里也写 !important。新增一类会出现在正文里的块时，
 * 先在夜间模式下导一张图看看有没有被主题接管（详见 docs/export-image.md 回归清单）。
 */

/* ─── 调色板备注 ──────────────────────────────────────────────
   accent-50  #FFF8ED  accent-100 #FFEED3  accent-200 #FDDBA0
   accent-300 #F5C46A  accent-400 #F0A740  accent-500 #D4891A
   accent-600 #B87316  accent-700 #8C5710
   surface-base #FAF8F3  surface-subtle #F3EFE7  surface-muted #EDE8DE
   surface-border #E0DBD0
   ────────────────────────────────────────────────────────── */

.export-poster {
  /* 双链的颜色由 kb-link.css 的 a.kb-link 按这几个令牌取，夜间模式下全站值是浅蓝；
     海报永远是白纸，这里按琥珀色系重新声明，链接才与 .export-poster-prose a 同一副面孔 */
  --kb-link-color: #B87316;
  --kb-link-color-hover: #B87316;
  --kb-link-bg-hover: transparent;
  --kb-link-border: rgba(184, 115, 22, 0.35);
  --kb-link-invalid: #9ca3af;
  color-scheme: light;
  width: 1080px;
  box-sizing: border-box;
  background: linear-gradient(180deg, #FAF8F3 0%, #FFFDF9 180px, #ffffff 100%);
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: #1e293b;
  line-height: 1.7;
  padding: 0;
  position: relative;
}

/* ── Hero 区域 ─────────────────────────────────────────── */
.export-poster__hero {
  padding: 56px 72px 20px;
  text-align: center;
}

.export-poster__title {
  font-size: 40px;
  line-height: 1.3;
  font-weight: 800;
  color: #0f172a;
  margin: 0 0 16px;
  letter-spacing: 0.5px;
}

.export-poster__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-bottom: 14px;
}

.export-poster__tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  border-radius: 999px;
  background: #FFEED3;
  color: #B87316;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.4px;
  border: 1px solid #FDDBA0;
  white-space: nowrap;
}

.export-poster__times {
  font-size: 13px;
  color: #94a3b8;
  margin-bottom: 28px;
  letter-spacing: 0.3px;
}

.export-poster__times-sep {
  display: inline-block;
  margin: 0 10px;
  color: #cbd5e1;
}

.export-poster__hero-divider {
  width: 64px;
  height: 3px;
  border-radius: 2px;
  background: #D4891A;
  margin: 0 auto 8px;
}

/* ── 摘要块 ────────────────────────────────────────────── */
.export-poster__excerpt {
  margin: 0 72px 36px;
  padding: 18px 22px;
  background: #FFF8ED;
  border-radius: 12px;
  border-left: 4px solid #D4891A;
  color: #6b5a3e;
  font-size: 16px;
  line-height: 1.7;
  font-style: italic;
  box-shadow: 0 1px 3px rgba(180, 115, 22, 0.08);
}

.export-poster__excerpt-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  color: #B87316;
  margin-bottom: 6px;
  font-style: normal;
}

/* ── 正文区域 ──────────────────────────────────────────── */
.export-poster__content-wrap {
  padding: 0 72px;
}

.export-poster__content-heading {
  font-size: 13px;
  font-weight: 700;
  color: #B87316;
  letter-spacing: 2.5px;
  margin-bottom: 14px;
  text-transform: uppercase;
}

/* ── 正文 Prose 排版 ───────────────────────────────────── */
.export-poster-prose {
  font-size: 16px;
  line-height: 1.85;
  color: #1f2937;
  word-break: break-word;
}

.export-poster-prose h1,
.export-poster-prose h2,
.export-poster-prose h3,
.export-poster-prose h4,
.export-poster-prose h5,
.export-poster-prose h6 {
  color: #4a3000;
  font-weight: 700;
  margin: 20px 0 8px;
  line-height: 1.4;
}
.export-poster-prose h1 { font-size: 28px; }
.export-poster-prose h2 {
  font-size: 24px;
  border-bottom: 1px solid #EDE8DE;
  padding-bottom: 6px;
}
.export-poster-prose h3 { font-size: 20px; color: #6b4a00; }
.export-poster-prose h4 { font-size: 18px; color: #7a5500; }
.export-poster-prose h5 { font-size: 16px; }
.export-poster-prose h6 { font-size: 15px; color: #8C5710; }

.export-poster-prose p {
  margin: 0 0 8px;
}

/* Quill 空段落 <p>&nbsp;</p> 高度压缩，避免多个连续空行堆叠成巨大间距 */
.export-poster-prose p.is-empty-line {
  line-height: 0.6;
  margin-bottom: 0;
}

.export-poster-prose strong,
.export-poster-prose b {
  font-weight: 700;
  color: #0f172a;
}

.export-poster-prose em,
.export-poster-prose i {
  font-style: italic;
}

.export-poster-prose a {
  color: #B87316;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.export-poster-prose ul,
.export-poster-prose ol {
  margin: 0 0 14px;
  padding-left: 26px;
}

.export-poster-prose ul {
  list-style-type: disc;
}

.export-poster-prose ol {
  list-style-type: decimal;
}

/* 嵌套列表：第二层改变标记样式 */
.export-poster-prose ul ul,
.export-poster-prose ol ul {
  list-style-type: circle;
  margin: 4px 0 4px;
}

.export-poster-prose ul ul ul,
.export-poster-prose ol ul ul,
.export-poster-prose ol ol ul {
  list-style-type: square;
}

.export-poster-prose ol ol {
  list-style-type: lower-alpha;
}

.export-poster-prose li {
  margin: 4px 0;
}

/* background / border-left-color / color / border-radius / font-size / line-height 带 !important：
   reading-theme.css 里有一条裸的 `blockquote { … !important }`（正文与编辑器共用），
   它按主题变量取色，夜间模式下会把海报里的引用块涂成深底浅字。同权重比不过 !important，
   只能同样加上——这是海报里唯一一处与主题 !important 规则正面相撞的地方 */
.export-poster-prose blockquote {
  margin: 16px 0;
  padding: 10px 18px;
  background: #FFF8ED !important;
  border-left: 4px solid #D4891A;
  border-left-color: #D4891A !important;
  color: #6b5a3e !important;
  border-radius: 6px !important;
  font-size: 16px !important;
  line-height: 1.85 !important;
  font-style: italic;
  /* 保留前导空格缩进，与编辑器 white-space:pre-wrap 行为一致 */
  white-space: pre-wrap;
  word-break: break-word;
}

/* 连续引用块合并容器 — 统一左边框，无块间间隔 */
.export-poster-prose .blockquote-group {
  margin: 16px 0;
  border-left: 4px solid #D4891A;
  background: #FFF8ED;
  border-radius: 6px;
  overflow: hidden;
}

.export-poster-prose .blockquote-group blockquote {
  margin: 0;
  border: none;
  background: transparent !important;
  border-radius: 0 !important;
  padding: 8px 18px;
  white-space: pre-wrap;
  word-break: break-word;
}

.export-poster-prose .blockquote-group blockquote + blockquote {
  padding-top: 0;
  border-top: none;
}

.export-poster-prose code {
  background: #F3EFE7;
  color: #8C5710;
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 0.92em;
  font-family: "JetBrains Mono", Menlo, Consolas, "Courier New", monospace;
}

.export-poster-prose pre,
.export-poster-prose .ql-code-block-container {
  background: #2d1a00;
  color: #FFEED3;
  border-radius: 10px;
  padding: 18px 22px;
  margin: 16px 0;
  overflow: visible;
  font-family: "JetBrains Mono", Menlo, Consolas, "Courier New", monospace;
  font-size: 14px;
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-word;
}

.export-poster-prose pre code,
.export-poster-prose .ql-code-block {
  background: transparent;
  color: inherit;
  padding: 0;
  font-size: inherit;
  border-radius: 0;
  display: block;
  white-space: pre-wrap;
  word-break: break-word;
}

.export-poster-prose .ql-code-block + .ql-code-block {
  margin-top: 2px;
}

.export-poster-prose img {
  display: block;
  max-width: 100%;
  margin: 16px auto;
  border-radius: 8px;
  box-shadow: 0 4px 14px rgba(140, 87, 16, 0.12);
}

.export-poster-prose hr {
  border: none;
  border-top: 1px solid #EDE8DE;
  margin: 22px 0;
}

/* wrapper 提供 1px 外边框 + 圆角裁切，与 cell 内边框完全一致粗细 */
.export-poster-prose .poster-table-wrapper {
  border: 1px solid #E0DBD0;
  border-radius: 2px;
  overflow: hidden;
  margin: 16px 0;
}

.export-poster-prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 0;
  background: #ffffff;
  font-size: 15px;
}

/* cell 只保留 right + bottom，outer 方向由 wrapper 边框提供，避免双层叠加显粗 */
.export-poster-prose table th,
.export-poster-prose table td {
  padding: 10px 14px;
  border-right: 1px solid #E0DBD0;
  border-bottom: 1px solid #E0DBD0;
  text-align: left;
  vertical-align: top;
}

.export-poster-prose table th:last-child,
.export-poster-prose table td:last-child {
  border-right: none;
}

.export-poster-prose table tr:last-child th,
.export-poster-prose table tr:last-child td {
  border-bottom: none;
}

.export-poster-prose table th {
  background: #FAF8F3;
  color: #4a3000;
  font-weight: 700;
}

.export-poster-prose table tr:nth-child(even) td {
  background: #FFFDF9;
}

/* ── 附件区域 ──────────────────────────────────────────── */
.export-poster__attachments {
  margin: 44px 72px 0;
  padding: 24px 28px;
  background: #FFF8ED;
  border: 1px solid #FDDBA0;
  border-radius: 14px;
}

.export-poster__attachments-title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2.5px;
  color: #B87316;
  margin-bottom: 14px;
  text-transform: uppercase;
}

.export-poster__attachment {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed #FDDBA0;
}
.export-poster__attachment:last-child { border-bottom: none; }

.export-poster__attachment-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: #FFEED3;
  color: #8C5710;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.export-poster__attachment-name {
  font-size: 15px;
  color: #1f2937;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.export-poster__attachment-size {
  font-size: 13px;
  color: #94a3b8;
}

/* ── 页脚 ──────────────────────────────────────────────── */
.export-poster__footer {
  margin-top: 56px;
  padding: 28px 72px 40px;
  border-top: 1px dashed #E0DBD0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #94a3b8;
  font-size: 13px;
}

.export-poster__footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #8C5710;
  font-weight: 500;
  letter-spacing: 0.8px;
}

.export-poster__footer-brand-mark {
  width: 24px;
  height: 24px;
  border-radius: 7px;
  object-fit: cover;
  display: block;
  flex-shrink: 0;
}

/* ── 隐藏截图舞台 ──────────────────────────────────────── */
.export-poster__stage {
  position: fixed;
  left: -99999px;
  top: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 1;
}