/* 功能层 - 绘本工坊（Picture Book Studio）专用样式
   布局原则：实时预览是页面的主角，占据最大面积；页面缩略图横向排布在预览上方；
   编辑控件收在右侧窄栏。所有叠加层坐标用百分比表达，随画布尺寸自适应。 */

.is-hidden {
  display: none !important;
}

/* —— 作品信息栏 —— */
.pb-bookbar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 14px;
  align-items: flex-end;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px 18px;
  box-shadow: var(--shadow-sm);
}

.pb-field {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}

.pb-field > label {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-text-secondary);
}

.pb-field input[type="text"],
.pb-field select,
.pb-field textarea {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--color-text);
  padding: 8px 10px;
  font-size: 14px;
  font-family: inherit;
}

.pb-field input[type="text"] {
  min-width: 170px;
}

.pb-field textarea {
  width: 100%;
  min-height: 128px;
  line-height: 1.7;
  resize: vertical;
}

.pb-bookbar-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-left: auto;
}

.pb-status {
  flex: 1 1 100%;
  font-size: 12.5px;
  color: var(--color-text-secondary);
  min-height: 17px;
}

/* —— 页面条带（横向缩略图） —— */
.pb-strip {
  margin-top: 12px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 10px 14px;
  box-shadow: var(--shadow-sm);
}

.pb-strip-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.pb-strip-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
}

.pb-count {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-secondary);
  font-variant-numeric: tabular-nums;
}

.pb-strip-actions {
  margin-left: auto;
  display: flex;
  gap: 8px;
}

.pb-strip-actions .btn {
  padding: 6px 14px;
  font-size: 13px;
}

.pb-page-strip {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 2px 2px 8px;
  scrollbar-width: thin;
}

.pb-page-card {
  flex: 0 0 auto;
  width: 84px;
  padding: 4px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.pb-page-card:hover {
  border-color: var(--color-primary);
}

.pb-page-card.is-active {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
  box-shadow: 0 0 0 2px rgba(249, 115, 22, 0.2);
}

.pb-page-card.is-dragging {
  opacity: 0.45;
}

.pb-page-card:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.45);
  outline-offset: 2px;
}

/* 缩略图容器收缩包裹画布，使页码角标始终贴合缩略图左上角 */
.pb-page-shot {
  position: relative;
  width: fit-content;
  max-width: 100%;
  margin: 0 auto;
}

.pb-page-thumb {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  /* 用高度上限统一不同开本的卡片高度，避免竖版开本把条带撑得很高 */
  max-height: 84px;
  border-radius: 6px;
  border: 1px solid #eadfd2;
  background: #fff;
}

.pb-page-no {
  position: absolute;
  top: 4px;
  left: 4px;
  min-width: 17px;
  height: 17px;
  padding: 0 4px;
  border-radius: 5px;
  background: rgba(31, 41, 55, 0.72);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-variant-numeric: tabular-nums;
}

.pb-page-card.is-active .pb-page-no {
  background: var(--color-primary);
}

.pb-page-kind {
  display: block;
  text-align: center;
  font-size: 11px;
  color: var(--color-text-secondary);
  margin-top: 4px;
}

/* —— 工作区：预览为主，设置居中侧栏；两栏等高，避免下方留下大片空白 —— */
.pb-workspace {
  /* 预览面板与设置面板共用的行高，两者严格对齐。
     预览画布受可用高度限制，行高越大画布越大（A4 竖版尤其明显），
     因此这里取值偏大；超出一屏的部分由页面整体滚动承担 */
  --pb-workspace-h: clamp(600px, 90vh, 1150px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) 336px;
  gap: 16px;
  margin-top: 14px;
  align-items: stretch;
}

.pb-panel {
  display: flex;
  flex-direction: column;
  min-height: 0;
  height: var(--pb-workspace-h);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 12px;
  box-shadow: var(--shadow-sm);
}

.pb-panel-title {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.pb-panel-title > span:first-child {
  flex: 0 0 auto;
}

.pb-panel-title .btn {
  flex: 0 0 auto;
  padding: 6px 14px;
  font-size: 13px;
}

/* 视图缩放：只改变页面在屏幕上的显示大小，不影响导出结果 */
.pb-viewzoom {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 1px;
  padding: 2px;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  background: #fff;
}

.pb-viewzoom-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 26px;
  height: 24px;
  padding: 0 6px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-text-secondary);
  cursor: pointer;
  font-variant-numeric: tabular-nums;
  transition: background 0.15s ease, color 0.15s ease;
}

.pb-viewzoom-btn svg {
  width: 14px;
  height: 14px;
  display: block;
}

.pb-viewzoom-btn:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

.pb-viewzoom-btn.is-active {
  background: var(--color-primary);
  color: #fff;
}

.pb-viewzoom-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.pb-viewzoom-btn:disabled:hover {
  background: transparent;
  color: var(--color-text-secondary);
}

.pb-viewzoom-btn:focus-visible {
  outline: 2px solid rgba(37, 99, 235, 0.55);
  outline-offset: 1px;
}

/* —— 设置面板的 TAB 菜单 —— */
.pb-tabs {
  flex: 0 0 auto;
  display: flex;
  gap: 3px;
  padding: 3px;
  margin-bottom: 12px;
  border-radius: 999px;
  background: var(--color-primary-soft);
}

.pb-tab {
  flex: 1 1 0;
  min-width: 0;
  border: 0;
  border-radius: 999px;
  padding: 7px 8px;
  background: transparent;
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text-secondary);
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.pb-tab:hover {
  color: var(--color-primary-dark);
}

.pb-tab.is-active {
  background: #fff;
  color: var(--color-primary-dark);
  box-shadow: var(--shadow-sm);
}

.pb-tab:focus-visible {
  outline: 2px solid rgba(37, 99, 235, 0.55);
  outline-offset: 1px;
}

.pb-tabpanels {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding-right: 4px;
}

.pb-tabpanel {
  display: none;
}

.pb-tabpanel.is-active {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* 页面操作常驻面板底部，不属于任何分类 */
.pb-settings-ops {
  flex: 0 0 auto;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--color-border);
}

/* —— 预览舞台 —— */
/* 舞台撑满面板剩余高度，并铺一层浅暖灰作为「画板」底色：
   页面像一张纸放在工作台上，四周留白因此读作工作区而不是空洞。
   画布由 JS 按可用空间等比放大；视图放大到超出舞台时可在此滚动查看。 */
.pb-stage {
  flex: 1 1 0;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  /* 默认不滚动：只在视图放大到超出可用空间时（is-zoomed）才启用滚动，
     否则滚动条会白白占掉约 15px 的可用空间，页面就放不到最大 */
  overflow: hidden;
  padding: 14px;
  background: #f2ece3;
  border-radius: 12px;
}

.pb-stage.is-zoomed {
  overflow: auto;
}

.pb-stage-fit {
  position: relative;
  flex: 0 0 auto;
  /* auto 外边距让页面在舞台内居中，同时保证放大溢出后仍能从左上角滚动查看 */
  margin: auto;
}

.pb-preview-canvas {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 4px 18px rgba(60, 45, 30, 0.16);
  /* 光标只在插画区内切换成抓手，明确「哪里可以拖动」 */
  cursor: default;
}

.pb-preview-canvas.is-over-image {
  cursor: grab;
}

.pb-preview-canvas.is-panning {
  cursor: grabbing;
}

.pb-preview-canvas:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.45);
  outline-offset: 2px;
}

.pb-stage-layer {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

/* 插画区提示框 */
.pb-frame {
  position: absolute;
  border: 1.5px dashed rgba(249, 115, 22, 0.8);
  border-radius: 4px;
  pointer-events: none;
}

.pb-frame-tag {
  position: absolute;
  left: 4px;
  top: 4px;
  padding: 1px 6px;
  border-radius: 4px;
  background: rgba(249, 115, 22, 0.9);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  white-space: nowrap;
}

/* 图文占比拖拽手柄：整行都是拖拽热区，中间是握把胶囊 */
.pb-split-handle {
  position: absolute;
  left: 0;
  right: 0;
  height: 36px;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: ns-resize;
  pointer-events: auto;
  touch-action: none;
}

.pb-split-handle::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  border-top: 1px dashed rgba(249, 115, 22, 0.6);
}

.pb-split-pill {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 4px 11px;
  border-radius: 999px;
  background: var(--color-primary);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  box-shadow: 0 3px 10px rgba(234, 88, 12, 0.35);
  transition: background 0.15s ease;
}

.pb-split-handle:hover .pb-split-pill,
.pb-split-handle.is-dragging .pb-split-pill {
  background: var(--color-primary-dark);
}

.pb-split-grip {
  display: block;
  width: 14px;
  height: 2px;
  border-radius: 2px;
  background: #fff;
  box-shadow: 0 4px 0 #fff;
  margin-bottom: 4px;
}

.pb-split-handle:focus-visible {
  outline: none;
}

.pb-split-handle:focus-visible .pb-split-pill {
  outline: 3px solid rgba(37, 99, 235, 0.55);
  outline-offset: 2px;
}

/* 缩放工具条 */
.pb-zoom-bar {
  position: absolute;
  right: 10px;
  bottom: 10px;
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 4px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  pointer-events: auto;
}

.pb-zoom-btn {
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.pb-zoom-btn:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

.pb-zoom-btn:focus-visible {
  outline: 2px solid rgba(37, 99, 235, 0.5);
  outline-offset: 1px;
}

.pb-zoom-btn svg {
  width: 15px;
  height: 15px;
  display: block;
}

.pb-zoom-value {
  min-width: 46px;
  text-align: center;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-text-secondary);
  font-variant-numeric: tabular-nums;
}

/* 预览状态提示：放在面板标题行内，单行显示，完全不占用画布高度 */
.pb-panel-title .pb-preview-note {
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  text-align: center;
  font-size: 12.5px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--color-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pb-note-warn {
  color: #b45309;
  font-weight: 600;
}

/* —— 设置面板 —— */
/* 面板本身已由 .pb-panel 提供 flex 纵向布局与固定行高，这里只做组内排版 */
.pb-settings {
  min-height: 0;
}

.pb-group {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.pb-group + .pb-group {
  border-top: 1px dashed var(--color-border);
  padding-top: 13px;
}

.pb-group-title {
  font-size: 12px;
  font-weight: 700;
  color: var(--color-text-secondary);
}

/* 组内纵向排布（用于把若干控件打包成一个可整体显隐的区块） */
.pb-stack {
  display: flex;
  flex-direction: column;
  gap: 11px;
}

.pb-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.pb-row input[type="range"] {
  flex: 1 1 auto;
  min-width: 0;
}

.pb-row input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
}

.pb-value-tag {
  font-size: 12px;
  color: var(--color-text-secondary);
  min-width: 42px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.pb-hint {
  font-size: 12px;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.pb-image-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.pb-image-row .btn {
  padding: 7px 14px;
  font-size: 13px;
}

.pb-file-input {
  display: none;
}

/* 页面操作按钮组 */
.pb-page-ops {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
}

.pb-op-btn {
  border: 1px solid var(--color-border);
  background: #fff;
  border-radius: 8px;
  padding: 8px 4px;
  font-size: 12px;
  font-family: inherit;
  color: var(--color-text);
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}

.pb-op-btn:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.pb-op-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.pb-op-btn:focus-visible {
  outline: 2px solid rgba(37, 99, 235, 0.5);
  outline-offset: 1px;
}

/* 九宫格位置选择 */
.pb-grid9 {
  display: grid;
  grid-template-columns: repeat(3, 34px);
  gap: 5px;
}

.pb-grid9 button {
  width: 34px;
  height: 34px;
  border: 1px solid var(--color-border);
  border-radius: 7px;
  background: #fff;
  cursor: pointer;
  position: relative;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.pb-grid9 button::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 12px;
  height: 3px;
  border-radius: 2px;
  background: #d9ccbb;
  transform: translate(-50%, -50%);
}

.pb-grid9 button:hover {
  border-color: var(--color-primary);
}

.pb-grid9 button.is-active {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.pb-grid9 button.is-active::after {
  background: #fff;
}

.pb-grid9 button:focus-visible {
  outline: 2px solid rgba(37, 99, 235, 0.5);
  outline-offset: 1px;
}

/* —— 翻页预览浮层 —— */
.pb-reader {
  position: fixed;
  inset: 0;
  z-index: 400;
  background: rgba(28, 20, 12, 0.88);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.pb-reader.is-open {
  display: flex;
}

.pb-reader-inner {
  max-width: 900px;
  width: 100%;
  max-height: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pb-reader-canvas {
  width: 100%;
  height: auto;
  max-height: 74vh;
  object-fit: contain;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.pb-reader-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.pb-reader-bar .btn {
  padding: 8px 18px;
  font-size: 14px;
}

.pb-reader-bar .btn-secondary {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.3);
  color: #fff;
}

.pb-reader-bar .btn-secondary:hover {
  background: rgba(255, 255, 255, 0.24);
  color: #fff;
}

.pb-reader-index {
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  min-width: 72px;
  text-align: center;
  font-variant-numeric: tabular-nums;
}

/* —— 下拉菜单（导出方式与打印设置） —— */
.pb-menu-wrap {
  position: relative;
  display: inline-flex;
  align-items: stretch;
}

.pb-menu-wrap > #pb-export-pdf {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

.pb-menu-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  border: 0;
  border-top-right-radius: 999px;
  border-bottom-right-radius: 999px;
  background: var(--color-primary-dark);
  color: #fff;
  cursor: pointer;
  transition: background 0.15s ease;
}

.pb-menu-toggle:hover {
  background: #c2410c;
}

.pb-menu-toggle svg {
  width: 14px;
  height: 14px;
  display: block;
}

.pb-menu-toggle:focus-visible {
  outline: 2px solid rgba(37, 99, 235, 0.55);
  outline-offset: 2px;
}

.pb-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 350;
  min-width: 262px;
  padding: 8px;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  background: #fff;
  box-shadow: 0 16px 40px rgba(60, 45, 30, 0.18);
  text-align: left;
}

.pb-menu-item {
  display: block;
  width: 100%;
  padding: 9px 12px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.pb-menu-item:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

.pb-menu-link {
  color: var(--color-accent);
  text-decoration: none;
}

.pb-menu-sep {
  height: 1px;
  margin: 6px 4px;
  background: var(--color-border);
}

.pb-menu-title {
  padding: 4px 12px 2px;
  font-size: 11px;
  font-weight: 700;
  color: var(--color-text-secondary);
}

.pb-menu-check {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 13px;
  color: var(--color-text);
  cursor: pointer;
}

.pb-menu-check:hover {
  background: var(--color-primary-soft);
}

.pb-menu-check input {
  width: 15px;
  height: 15px;
  accent-color: var(--color-primary);
}

.pb-menu-check.is-disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* 菜单里的静态说明文字（纸型、双面装订提示） */
.pb-menu-note {
  padding: 2px 12px 6px;
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

/* —— 状态栏的重试按钮（导出失败时出现） —— */
.pb-status {
  display: flex;
  align-items: center;
  gap: 10px;
}

.pb-status-retry {
  flex: 0 0 auto;
  padding: 3px 12px;
  border: 1px solid var(--color-primary);
  border-radius: 999px;
  background: #fff;
  font-family: inherit;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary-dark);
  cursor: pointer;
  transition: background 0.15s ease;
}

.pb-status-retry:hover {
  background: var(--color-primary-soft);
}

.pb-status-retry:focus-visible {
  outline: 2px solid rgba(37, 99, 235, 0.55);
  outline-offset: 1px;
}

/* 弹层左下角的次要动作（跳过引导） */
.pb-skip-btn {
  margin-right: auto;
}

/* —— 通用弹层 —— */
.pb-modal {
  position: fixed;
  inset: 0;
  z-index: 380;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(40, 30, 20, 0.55);
}

.pb-modal.is-open {
  display: flex;
}

.pb-modal-box {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 720px;
  max-height: 88vh;
  padding: 18px;
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: 0 24px 60px rgba(40, 28, 16, 0.28);
}

.pb-modal-box--wide {
  max-width: 820px;
}

.pb-modal-box--narrow {
  max-width: 480px;
}

.pb-modal-head {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.pb-modal-title {
  flex: 1 1 auto;
  font-size: 17px;
  font-weight: 700;
}

.pb-modal-close {
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  border: 0;
  border-radius: 50%;
  background: transparent;
  font-size: 20px;
  line-height: 1;
  color: var(--color-text-secondary);
  cursor: pointer;
}

.pb-modal-close:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

.pb-modal-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
}

.pb-modal-note {
  margin-bottom: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.pb-modal-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 14px;
}

/* —— 模板卡片列表 —— */
.pb-card-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 10px;
}

.pb-card-list--seed {
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
}

.pb-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: #fff;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.pb-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 6px 18px rgba(234, 88, 12, 0.12);
}

.pb-card.is-active {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
  box-shadow: 0 0 0 2px rgba(249, 115, 22, 0.2);
}

.pb-card:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.45);
  outline-offset: 2px;
}

.pb-card-title {
  padding-right: 26px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
}

.pb-card-meta {
  font-size: 12px;
  line-height: 1.6;
  color: var(--color-text-secondary);
}

.pb-card-fav {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 24px;
  height: 24px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  font-size: 15px;
  line-height: 1;
  color: #d9cbb8;
  cursor: pointer;
}

/* 下载模板文件：与星标同排，放在星标左侧 */
.pb-card-dl {
  position: absolute;
  top: 8px;
  right: 34px;
  width: 24px;
  height: 24px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
}

.pb-card-dl svg {
  width: 14px;
  height: 14px;
  display: block;
  margin: 0 auto;
}

.pb-card-dl:hover {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
}

.pb-card-fav.is-on {
  color: var(--color-primary);
}

.pb-card-fav svg {
  width: 14px;
  height: 14px;
  display: block;
  margin: 0 auto;
}

.pb-card-fav:hover {
  background: var(--color-primary-soft);
}

/* —— 故事种子：左列表 + 右详情 —— */
.pb-seed-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 12px;
  align-items: start;
}

.pb-seed-detail {
  padding: 12px;
  border: 1px dashed var(--color-border);
  border-radius: 12px;
  background: #fffdfa;
  font-size: 13px;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.pb-seed-detail h4 {
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-text);
}

.pb-seed-detail p {
  margin: 0 0 10px;
}

.pb-seed-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin: 0 0 10px;
  padding: 0;
  list-style: none;
}

.pb-seed-tags li {
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  font-size: 12px;
}

.pb-seed-paths {
  margin: 0 0 12px;
  padding-left: 18px;
}

.pb-seed-paths li {
  margin-bottom: 4px;
}

/* —— 粘贴文字：分段预览 —— */
.pb-paste-preview {
  max-height: 220px;
  margin-top: 12px;
  overflow-y: auto;
}

.pb-paste-item {
  display: flex;
  gap: 10px;
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: #fff;
  margin-bottom: 8px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--color-text);
}

.pb-paste-no {
  flex: 0 0 auto;
  min-width: 22px;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary);
}

.pb-paste-empty {
  padding: 16px;
  border: 1px dashed var(--color-border);
  border-radius: 10px;
  font-size: 13px;
  color: var(--color-text-secondary);
  text-align: center;
}

/* —— 草稿列表 —— */
.pb-draft-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pb-draft-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  background: #fff;
}

.pb-draft-item.is-current {
  border-color: var(--color-primary);
  background: var(--color-primary-soft);
}

.pb-draft-main {
  flex: 1 1 auto;
  min-width: 0;
}

.pb-draft-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pb-draft-meta {
  margin-top: 3px;
  font-size: 12px;
  color: var(--color-text-secondary);
}

.pb-draft-ops {
  flex: 0 0 auto;
  display: flex;
  gap: 5px;
}

.pb-draft-ops .pb-op-btn {
  padding: 6px 9px;
}

.pb-draft-empty {
  padding: 24px;
  border: 1px dashed var(--color-border);
  border-radius: 12px;
  font-size: 13px;
  color: var(--color-text-secondary);
  text-align: center;
}

/* —— 上手引导 —— */
.pb-guide-step {
  display: none;
  gap: 10px;
}

.pb-guide-step.is-active {
  display: block;
}

.pb-guide-dots {
  display: flex;
  gap: 6px;
  align-items: center;
  margin-top: 14px;
}

.pb-guide-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-border);
}

.pb-guide-dot.is-on {
  background: var(--color-primary);
}

.pb-guide-index {
  margin-bottom: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary);
}

.pb-guide-step strong {
  display: block;
  margin-bottom: 6px;
  font-size: 15px;
  color: var(--color-text);
}

.pb-guide-step span {
  font-size: 13px;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

/* —— 预览内的空状态提示 —— */
.pb-empty-hint {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  max-width: 78%;
  padding: 18px 20px;
  border: 1px dashed var(--color-border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.94);
  text-align: center;
  pointer-events: auto;
}

.pb-empty-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
}

.pb-empty-text {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

.pb-empty-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-top: 4px;
}

.pb-empty-actions .btn {
  padding: 6px 14px;
  font-size: 13px;
}

/* —— 建议拆分条 —— */
.pb-split-hint {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 9px 11px;
  border: 1px solid #fcd9a8;
  border-radius: 10px;
  background: #fffaf0;
  font-size: 12.5px;
  line-height: 1.6;
  color: #92400e;
}

.pb-split-hint .btn {
  padding: 5px 12px;
  font-size: 12.5px;
}

/* 提示条右侧的「忽略」按钮（提示不强制，保留用户控制） */
.pb-split-close {
  margin-left: auto;
  width: 22px;
  height: 22px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: transparent;
  font-size: 16px;
  line-height: 1;
  color: #92400e;
  cursor: pointer;
}

.pb-split-close:hover {
  background: rgba(146, 64, 14, 0.12);
}

/* —— 业务页上的说明文字做视觉降级 ——
   内容全部保留（同时指向教程中心），但字号与留白收一档，
   让实时预览稳稳成为页面的视觉主体，说明退为辅助信息 */
.seo-content--compact {
  margin-top: 20px;
  padding: 20px 24px;
}

.seo-content--compact h2 {
  font-size: 18px;
  margin-bottom: 10px;
}

.seo-content--compact h3 {
  font-size: 15px;
  margin: 14px 0 6px;
}

.seo-content--compact p,
.seo-content--compact li {
  font-size: 13.5px;
  line-height: 1.7;
}

.seo-content--compact ul,
.seo-content--compact ol {
  padding-left: 20px;
  margin-bottom: 8px;
}

.seo-content--compact section {
  margin-bottom: 12px;
}

/* —— 响应式 —— */
@media (max-width: 1080px) {
  /* 单列堆叠：取消固定行高，改由内容决定，高度交给舞台的最小高度约束 */
  .pb-workspace {
    grid-template-columns: minmax(0, 1fr);
    --pb-workspace-h: auto;
  }

  .pb-panel {
    height: auto;
  }

  .pb-stage {
    min-height: min(76vh, 640px);
  }

  .pb-tabpanels {
    overflow: visible;
    padding-right: 0;
  }
}

@media (max-width: 720px) {
  .pb-bookbar-actions {
    margin-left: 0;
    width: 100%;
  }

  .pb-strip-actions .btn {
    padding: 6px 10px;
  }

  .pb-page-card {
    width: 78px;
  }

  .pb-stage {
    min-height: min(58vh, 440px);
    padding: 10px;
  }

  /* 窄屏下标题行放不下单行提示，改为换行成一行显示 */
  .pb-panel-title {
    flex-wrap: wrap;
  }

  .pb-panel-title .pb-preview-note {
    order: 3;
    flex-basis: 100%;
    text-align: left;
    white-space: normal;
  }

  .pb-zoom-bar {
    right: 6px;
    bottom: 6px;
  }

  .pb-reader {
    padding: 12px;
  }

  /* 移动端把弹层改为底部展开的 sheet：拇指可达，且不完全遮挡上下文 */
  .pb-modal {
    padding: 0;
    align-items: flex-end;
  }

  .pb-modal-box {
    max-width: none;
    max-height: 86vh;
    border-radius: 18px 18px 0 0;
  }

  /* 窄屏下下拉菜单收窄，避免超出屏幕左边缘 */
  .pb-menu {
    min-width: 0;
    width: min(88vw, 262px);
  }

  /* 种子列表与详情在窄屏改为上下排列 */
  .pb-seed-wrap {
    grid-template-columns: minmax(0, 1fr);
  }

  .pb-card-list,
  .pb-card-list--seed {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }
}