/* 知识库导出弹窗样式 */

.export-dialog-mask {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--kb-scrim-bg);
  backdrop-filter: blur(var(--kb-scrim-blur));
  -webkit-backdrop-filter: blur(var(--kb-scrim-blur));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.export-dialog-mask.is-visible {
  opacity: 1;
}

.export-dialog {
  width: 100%;
  max-width: 560px;
  max-height: calc(100vh - 48px);
  background: var(--bg-primary, #ffffff);
  color: var(--text-primary, #1e293b);
  border-radius: 16px;
  box-shadow: 0 24px 64px rgba(15, 23, 42, 0.25);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transform: translateY(12px) scale(0.98);
  opacity: 0;
  transition: transform 0.22s ease, opacity 0.22s ease;
}

.export-dialog-mask.is-visible .export-dialog {
  transform: translateY(0) scale(1);
  opacity: 1;
}

.export-dialog__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--border-color, #e2e8f0);
}

.export-dialog__title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  font-weight: 600;
  color: var(--text-primary, #1e293b);
}

.export-dialog__title i {
  font-size: 20px;
  color: var(--primary-color, #3b82f6);
}

.export-dialog__close {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--text-secondary, #64748b);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: background 0.15s ease, color 0.15s ease;
}

.export-dialog__close:hover {
  background: var(--bg-tertiary, #f1f5f9);
  color: var(--text-primary, #1e293b);
}

.export-dialog__body {
  padding: 20px 22px;
  overflow-y: auto;
  flex: 1 1 auto;
}

.export-dialog__section-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary, #64748b);
  margin-bottom: 12px;
  letter-spacing: 0.3px;
}

.export-dialog__formats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 10px;
}


/* 更多格式折叠区：默认隐藏，展开时带高度动画 */
.export-dialog__formats--more {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 0;
  margin-bottom: 0;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.28s ease, opacity 0.22s ease, margin 0.22s ease;
}

.export-dialog__formats--more.is-open {
  max-height: 200px;
  opacity: 1;
  margin-top: 10px;
  margin-bottom: 10px;
}

@media (max-width: 520px) {
  .export-dialog__formats,
  .export-dialog__formats--more {
    grid-template-columns: repeat(2, 1fr);
  }
}

.export-dialog__format {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 8px;
  border-radius: 12px;
  border: 1.5px solid var(--border-color, #e2e8f0);
  background: var(--bg-secondary, #f8fafc);
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.15s ease;
  user-select: none;
}

.export-dialog__format:hover {
  border-color: var(--primary-color, #3b82f6);
  transform: translateY(-1px);
}

.export-dialog__format.is-active {
  border-color: var(--primary-color, #3b82f6);
  background: rgba(59, 130, 246, 0.08);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.export-dialog__format i {
  font-size: 26px;
  color: var(--primary-color, #3b82f6);
}

.export-dialog__format-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary, #1e293b);
}

.export-dialog__format-hint {
  font-size: 11px;
  color: var(--text-tertiary, #94a3b8);
}

/* 推荐徽标 */
.export-dialog__format-badge {
  position: absolute;
  top: 7px;
  right: 8px;
  font-size: 10px;
  font-weight: 600;
  line-height: 1;
  padding: 2px 6px;
  border-radius: 20px;
  background: linear-gradient(135deg, #3b82f6 0%, #6366f1 100%);
  color: #fff;
  letter-spacing: 0.2px;
}

/* 更多格式折叠按钮 */
.export-dialog__more-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 100%;
  padding: 8px 10px;
  border-radius: 8px;
  border: 1px dashed var(--border-color, #e2e8f0);
  background: transparent;
  color: var(--text-secondary, #64748b);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  margin-bottom: 0;
}

.export-dialog__more-toggle:hover {
  background: var(--bg-tertiary, #f1f5f9);
  border-color: var(--primary-color, #3b82f6);
  color: var(--primary-color, #3b82f6);
}

.export-dialog__more-toggle.is-open {
  border-color: var(--primary-color, #3b82f6);
  color: var(--primary-color, #3b82f6);
  background: rgba(59, 130, 246, 0.05);
}

.export-dialog__more-toggle > i:first-child {
  font-size: 15px;
}

.export-dialog__more-chevron {
  margin-left: auto;
  font-size: 16px;
  transition: transform 0.22s ease;
}

.export-dialog__more-toggle.is-open .export-dialog__more-chevron {
  transform: rotate(180deg);
}

/* 更多格式区距离内容区的间距 */
.export-dialog__formats--more + .export-dialog__section-title {
  margin-top: 18px;
}

.export-dialog__fields {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 16px;
}

@media (max-width: 520px) {
  .export-dialog__fields {
    grid-template-columns: 1fr;
  }
}

.export-dialog__field {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid var(--border-color, #e2e8f0);
  background: var(--bg-primary, #ffffff);
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.export-dialog__field:hover {
  background: var(--bg-tertiary, #f1f5f9);
}

.export-dialog__field.is-checked {
  border-color: var(--primary-color, #3b82f6);
  background: rgba(59, 130, 246, 0.06);
}

.export-dialog__field-check {
  width: 18px;
  height: 18px;
  border-radius: 5px;
  border: 1.5px solid var(--border-color, #cbd5e1);
  background: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 12px;
  flex-shrink: 0;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.export-dialog__field.is-checked .export-dialog__field-check {
  background: var(--primary-color, #3b82f6);
  border-color: var(--primary-color, #3b82f6);
}

.export-dialog__field-label {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.export-dialog__field-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary, #1e293b);
}

.export-dialog__field-desc {
  font-size: 11px;
  color: var(--text-tertiary, #94a3b8);
}

.export-dialog__footer {
  padding: 14px 22px;
  border-top: 1px solid var(--border-color, #e2e8f0);
  background: var(--bg-secondary, #f8fafc);
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.export-dialog__btn {
  min-width: 92px;
  padding: 9px 18px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.export-dialog__btn--ghost {
  background: transparent;
  border-color: var(--border-color, #e2e8f0);
  color: var(--text-primary, #1e293b);
}

.export-dialog__btn--ghost:hover {
  background: var(--bg-tertiary, #f1f5f9);
}

.export-dialog__btn--primary {
  background: var(--primary-color, #3b82f6);
  border-color: var(--primary-color, #3b82f6);
  color: #fff;
}

.export-dialog__btn--primary:hover {
  background: var(--primary-hover, #2563eb);
  border-color: var(--primary-hover, #2563eb);
}

.export-dialog__btn[disabled],
.export-dialog__btn.is-loading {
  /* 加载态保留完整文字/图标对比度，配色由 reading-theme 的禁用语义变量统一提供。 */
  opacity: 1;
  cursor: not-allowed;
}

.export-dialog__btn.is-loading i {
  animation: export-dialog-spin 1s linear infinite;
}

@keyframes export-dialog-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* 暗色模式兼容 */
[data-theme="dark"] .export-dialog__more-toggle {
  border-color: var(--border-color, #334155);
}

[data-theme="dark"] .export-dialog__more-toggle:hover,
[data-theme="dark"] .export-dialog__more-toggle.is-open {
  background: rgba(96, 165, 250, 0.08);
}

[data-theme="dark"] .export-dialog__format {
  background: var(--bg-tertiary, #334155);
}

[data-theme="dark"] .export-dialog__format.is-active {
  background: rgba(96, 165, 250, 0.16);
}

[data-theme="dark"] .export-dialog__field {
  background: var(--bg-secondary, #1e293b);
}

[data-theme="dark"] .export-dialog__field.is-checked {
  background: rgba(96, 165, 250, 0.12);
}

[data-theme="dark"] .export-dialog__field-check {
  background: var(--bg-primary, #0f172a);
  border-color: var(--border-color, #334155);
}

[data-theme="dark"] .export-dialog__footer {
  background: var(--bg-secondary, #1e293b);
}

/* Markdown 保真度选择：只在导出格式为 Markdown 时出现。
   与上一组的间距对齐「选择导出内容」——那一段的上间距来自
   .export-dialog__formats 的 margin-bottom，而 .export-dialog__fields 没有，
   所以这里自己补一个同样的值，两个小标题的节奏才一致。 */
.export-dialog__fidelity {
  margin-top: 10px;
}

.export-dialog__fidelity.is-hidden {
  display: none;
}