/* ppt-generator.css — PPT 生成器样式 */

/* 配置页跟随主站浅色令牌；预览工作区在 .ppt-preview-container 里覆盖成深色。
   分开的原因：配置页嵌在浅色站壳（#toolsView）里，深色会割裂；
   而预览区是全屏接管的画布环境，深色能让白色 A3 页面凸显。 */
:root {
  --ppt-bg: var(--color-bg, #FFFFFF);
  --ppt-surface: var(--color-surface, #FFFFFF);
  --ppt-surface-hover: var(--color-surface-hover, #FAFAFA);
  --ppt-border: var(--color-border, #E5E7EB);
  --ppt-accent: var(--color-primary, #2C4E9A);
  --ppt-accent-hover: var(--color-primary-hover, #223F7C);
  --ppt-text-primary: var(--color-text-primary, #111111);
  --ppt-text-secondary: var(--color-text-secondary, #52525B);
  --ppt-text-tertiary: var(--color-text-tertiary, #71717A);
  --ppt-radius: 6px;
  --ppt-font-sans: 'Noto Sans SC', -apple-system, system-ui, sans-serif;
  --ppt-font-serif: 'Noto Serif SC', serif;
}

/* 主容器 - 仅面向 >=1280px 的桌面工作台 */
.ppt-generator-container {
  min-height: 100vh;
  min-width: 1280px;
  background: var(--color-bg-secondary, #F7F7F8);
  color: var(--ppt-text-primary);
  font-family: var(--ppt-font-sans);
  padding: 18px 24px 28px;
}

/* 标题区 */
.ppt-generator-header {
  max-width: none;
  min-height: 48px;
  margin: 0 0 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.ppt-generator-header > div:first-child {
  min-width: 0;
}

.ppt-generator-title {
  font-size: 24px;
  font-weight: 600;
  letter-spacing: 0;
  margin: 0;
  color: var(--ppt-text-primary);
}

.ppt-generator-subtitle {
  font-size: 13px;
  color: var(--ppt-text-secondary);
  line-height: 1.5;
  margin: 2px 0 0;
}

.ppt-format-note {
  flex: none;
  min-width: 230px;
  padding-left: 18px;
  border-left: 1px solid var(--ppt-border);
  display: grid;
  justify-items: end;
  gap: 1px;
}

.ppt-format-note strong {
  font-size: 13px;
  font-weight: 600;
  color: var(--ppt-text-primary);
}

.ppt-format-note span {
  font-size: 11px;
  color: var(--ppt-text-tertiary);
  font-variant-numeric: tabular-nums;
}

/* 配置面板：主流程与最近项目是两个清晰的桌面信息区 */
.ppt-config-panel {
  max-width: none;
  margin: 0;
  background: transparent;
}

#pptConfigForm {
  display: grid;
  gap: 14px;
}

.ppt-config-main {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 14px;
  align-items: stretch;
}

.ppt-source-column,
.ppt-settings-column,
.ppt-history-section {
  min-width: 0;
  background: var(--ppt-surface);
  border: 1px solid var(--ppt-border);
  border-radius: var(--ppt-radius);
}

.ppt-source-column,
.ppt-settings-column {
  padding: 18px 20px;
}

.ppt-source-column {
  display: flex;
  flex-direction: column;
}

.ppt-settings-column {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-content: start;
  gap: 15px;
}

.ppt-section-heading {
  min-width: 0;
  min-height: 38px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 15px;
}

.ppt-settings-column > .ppt-section-heading {
  margin-bottom: 0;
}

.ppt-section-heading > div {
  min-width: 0;
}

.ppt-section-heading h2,
.ppt-history-heading h2 {
  margin: 0;
  color: var(--ppt-text-primary);
  font-size: 15px;
  line-height: 1.35;
  font-weight: 600;
  letter-spacing: 0;
}

.ppt-section-heading p,
.ppt-history-heading p {
  margin: 2px 0 0;
  color: var(--ppt-text-tertiary);
  font-size: 11.5px;
  line-height: 1.45;
}

.ppt-step-number {
  flex: none;
  width: 30px;
  height: 30px;
  border: 1px solid color-mix(in srgb, var(--ppt-accent) 28%, var(--ppt-border));
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--ppt-accent);
  background: color-mix(in srgb, var(--ppt-accent) 6%, var(--ppt-bg));
  font-size: 11px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.ppt-config-section {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.ppt-config-section.full-width {
  grid-column: 1 / -1;
}

.ppt-config-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ppt-text-primary);
  margin-bottom: 6px;
  letter-spacing: 0;
}

.ppt-config-hint {
  display: block;
  font-size: 12px;
  color: var(--ppt-text-tertiary);
  margin-top: 5px;
  line-height: 1.5;
}

/* 文件上传区 */
.ppt-upload-zone {
  position: relative;
  background: var(--ppt-bg);
  border: 2px dashed var(--ppt-border);
  border-radius: var(--ppt-radius);
  flex: 1;
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 208px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.ppt-upload-zone:hover,
.ppt-upload-zone.dragging {
  border-color: var(--ppt-accent);
  background: var(--ppt-surface-hover);
}

.ppt-upload-zone.dragging {
  border-style: solid;
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--ppt-accent) 45%, transparent);
}

.ppt-upload-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 12px;
  color: var(--ppt-accent);
  opacity: 0.8;
}

.ppt-upload-text {
  font-size: 14px;
  color: var(--ppt-text-secondary);
  margin: 0 0 6px;
}

.ppt-upload-hint {
  font-size: 12px;
  color: var(--ppt-text-tertiary);
  margin: 0;
}

/* 文件已选中显示 */
#pptFileList .ppt-file-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--ppt-bg);
  border: 1px solid var(--ppt-border);
  border-radius: var(--ppt-radius);
  margin-top: 10px;
}

.ppt-file-icon {
  width: 40px;
  height: 40px;
  background: rgba(56, 189, 248, 0.15);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--ppt-accent);
}

.ppt-file-info {
  flex: 1;
  min-width: 0;
}

.ppt-file-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--ppt-text-primary);
  margin: 0 0 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ppt-file-size {
  font-size: 13px;
  color: var(--ppt-text-tertiary);
  margin: 0;
}

.ppt-file-size[data-tone="success"] { color: #15803D; }
.ppt-file-size[data-tone="loading"] { color: var(--ppt-accent); }

.ppt-file-remove {
  background: transparent;
  border: none;
  color: var(--ppt-text-tertiary);
  cursor: pointer;
  padding: 8px;
  border-radius: var(--ppt-radius);
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.ppt-file-remove:hover {
  background: var(--ppt-surface-hover);
  color: var(--ppt-text-primary);
}

.ppt-image-mode-fieldset {
  padding: 0;
  margin: 0;
  border: 0;
}

.ppt-image-mode-options {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.ppt-choice-card {
  min-width: 0;
  min-height: 66px;
  padding: 10px 11px;
  border: 1px solid var(--ppt-border);
  border-radius: var(--ppt-radius);
  background: var(--ppt-bg);
  display: grid;
  grid-template-columns: 16px minmax(0, 1fr);
  align-items: flex-start;
  gap: 9px;
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease, box-shadow 0.15s ease;
}

.ppt-choice-card:hover {
  border-color: color-mix(in srgb, var(--ppt-accent) 55%, var(--ppt-border));
  background: var(--ppt-surface-hover);
}

.ppt-choice-card:has(input:checked) {
  border-color: var(--ppt-accent);
  background: color-mix(in srgb, var(--ppt-accent) 5%, var(--ppt-bg));
  box-shadow: inset 3px 0 0 var(--ppt-accent);
}

.ppt-choice-card input {
  width: 15px;
  height: 15px;
  margin: 2px 0 0;
  accent-color: var(--ppt-accent);
}

.ppt-choice-card > span {
  min-width: 0;
  display: grid;
  gap: 2px;
}

.ppt-choice-card strong {
  color: var(--ppt-text-primary);
  font-size: 12.5px;
  line-height: 1.4;
  font-weight: 600;
}

.ppt-choice-card small {
  color: var(--ppt-text-tertiary);
  font-size: 11px;
  line-height: 1.45;
}

/* 输入框 */
.ppt-input,
.ppt-select {
  width: 100%;
  background: var(--ppt-bg);
  border: 1px solid var(--ppt-border);
  border-radius: var(--ppt-radius);
  min-height: 42px;
  padding: 10px 12px;
  font-size: 14px;
  color: var(--ppt-text-primary);
  font-family: var(--ppt-font-sans);
  transition: all 0.2s ease;
}

.ppt-input:focus,
.ppt-select:focus {
  border-color: var(--ppt-accent);
  background: var(--ppt-bg);
}

.ppt-input::placeholder {
  color: var(--ppt-text-tertiary);
}

/* 按钮 */
.ppt-btn-primary,
.ppt-btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 40px;
  padding: 9px 16px;
  border-radius: var(--ppt-radius);
  font-size: 14px;
  font-weight: 500;
  font-family: var(--ppt-font-sans);
  cursor: pointer;
  border: none;
  transition: all 0.15s ease;
}

.ppt-btn-primary {
  background: var(--ppt-accent);
  color: var(--ppt-bg);
}

.ppt-btn-primary:hover:not(:disabled) {
  background: var(--ppt-accent-hover);
  transform: translateY(-1px);
}

.ppt-btn-primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.ppt-btn-secondary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.ppt-btn-secondary {
  background: transparent;
  color: var(--ppt-text-primary);
  border: 1px solid var(--ppt-border);
}

.ppt-btn-secondary:hover:not(:disabled) {
  background: var(--ppt-surface-hover);
  border-color: var(--ppt-accent);
}

.ppt-btn-group {
  display: flex;
  gap: 12px;
  margin-top: 24px;
}

/* ========== 预览工作区（全屏接管 + 深色作用域） ========== */
.ppt-preview-container {
  /* 深色令牌只在这棵子树内生效，不污染配置页和主站 */
  --ppt-bg: #0B0E14;
  --ppt-surface: #161A21;
  --ppt-surface-hover: #1F242D;
  --ppt-border: #2A2F3A;
  --ppt-accent: #38BDF8;
  --ppt-accent-hover: #22D3EE;
  --ppt-text-primary: #F8FAFC;
  --ppt-text-secondary: #94A3B8;
  --ppt-text-tertiary: #A7B3C6;

  position: fixed;
  inset: 0;
  min-width: 1280px;
  z-index: 60;
  background: var(--ppt-bg);
  color: var(--ppt-text-primary);
  font-family: var(--ppt-font-sans);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* 顶部工具栏 */
.ppt-preview-header {
  flex: none;
  height: 52px;
  background: var(--ppt-surface);
  border-bottom: 1px solid var(--ppt-border);
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  padding: 0 12px 0 10px;
  gap: 10px;
}

.ppt-preview-heading {
  flex: 0 1 280px;
  max-width: 320px;
  min-width: 120px;
  display: grid;
  gap: 1px;
}

.ppt-preview-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--ppt-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

.ppt-preview-format {
  color: var(--ppt-text-tertiary);
  font-size: 10px;
  line-height: 1.25;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-variant-numeric: tabular-nums;
}

/* 生成进度：常驻顶栏，不随主预览区重绘而消失 */
.ppt-preview-status {
  flex: 1;
  min-width: 0;
  font-size: 12.5px;
  color: var(--ppt-accent);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.ppt-preview-status[data-tone="error"] { color: #FCA5A5; }
.ppt-preview-status[data-tone="success"] { color: #86EFAC; }
.ppt-preview-status[data-tone="warning"] { color: #FDE68A; }

.ppt-preview-status.active {
  opacity: 1;
}

.ppt-preview-actions {
  display: flex;
  align-items: center;
  gap: 5px;
  flex: none;
  flex-wrap: nowrap;
  white-space: nowrap;
  margin-left: auto;
}

.ppt-page-indicator {
  font-size: 12.5px;
  color: var(--ppt-text-secondary);
  font-variant-numeric: tabular-nums;
  min-width: 62px;
  text-align: center;
  user-select: none;
}

.ppt-toolbar-divider {
  width: 1px;
  height: 20px;
  background: var(--ppt-border);
  margin: 0 4px;
}

.ppt-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: transparent;
  border: 1px solid var(--ppt-border);
  border-radius: var(--ppt-radius);
  color: var(--ppt-text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}

.ppt-toolbar-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: auto;
  min-width: 36px;
  max-width: 132px;
  height: 36px;
  padding: 0 10px;
  gap: 6px;
  border: 1px solid var(--ppt-border);
  border-radius: var(--ppt-radius);
  background: transparent;
  color: var(--ppt-text-secondary);
  cursor: pointer;
  white-space: nowrap;
  font-size: 12px;
  font-weight: 500;
  transition: border-color 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}

.ppt-toolbar-button svg {
  width: 16px !important;
  height: 16px !important;
  flex: none;
}

.ppt-toolbar-button:hover:not(:disabled) {
  border-color: var(--ppt-accent);
  background: var(--ppt-surface-hover);
  color: var(--ppt-accent);
}

.ppt-toolbar-button:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.ppt-toolbar-button.active,
.ppt-toolbar-button[aria-expanded="true"],
.ppt-toolbar-button[aria-pressed="true"] {
  border-color: var(--ppt-accent);
  background: rgba(56, 189, 248, 0.12);
  color: var(--ppt-accent);
}

.ppt-toolbar-button.primary,
.ppt-toolbar-button-primary,
.ppt-toolbar-button[data-variant="primary"] {
  border-color: var(--ppt-accent);
  background: var(--ppt-accent);
  color: #071118;
  font-weight: 600;
}

.ppt-toolbar-button.primary:hover:not(:disabled),
.ppt-toolbar-button-primary:hover:not(:disabled),
.ppt-toolbar-button[data-variant="primary"]:hover:not(:disabled) {
  border-color: var(--ppt-accent-hover);
  background: var(--ppt-accent-hover);
  color: #071118;
}

.ppt-save-state {
  flex: none;
  max-width: 148px;
  min-height: 24px;
  padding: 3px 8px;
  border: 1px solid transparent;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--ppt-text-secondary);
  background: transparent;
  font-size: 11px;
  line-height: 1.4;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ppt-save-state::before {
  content: '';
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

.ppt-save-state[data-tone="dirty"],
.ppt-save-state.dirty {
  color: #FDE68A;
  background: rgba(253, 230, 138, 0.08);
}

.ppt-save-state[data-tone="saving"],
.ppt-save-state.saving {
  color: var(--ppt-accent);
  background: rgba(56, 189, 248, 0.08);
}

.ppt-save-state[data-tone="success"],
.ppt-save-state[data-tone="saved"],
.ppt-save-state.saved,
.ppt-save-state.success {
  color: #86EFAC;
  background: rgba(134, 239, 172, 0.08);
}

.ppt-save-state[data-tone="error"],
.ppt-save-state.error {
  color: #FCA5A5;
  border-color: rgba(252, 165, 165, 0.28);
  background: rgba(252, 165, 165, 0.08);
}

.ppt-save-state[data-tone="saving"]::before,
.ppt-save-state.saving::before {
  animation: ppt-pending-pulse 1.2s ease-in-out infinite;
}

.ppt-icon-btn:hover:not(:disabled) {
  background: var(--ppt-surface-hover);
  border-color: var(--ppt-accent);
  color: var(--ppt-accent);
}

.ppt-icon-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.ppt-icon-btn:focus-visible {
  outline: 2px solid var(--ppt-accent);
  outline-offset: 2px;
}

/* 主体：可扫描缩略栏 + A3 预览 + 可选编辑器 */
.ppt-preview-body {
  flex: 1;
  display: grid;
  grid-template-columns: 188px minmax(0, 1fr);
  min-height: 0;
  overflow: hidden;
}

.ppt-preview-body.editor-open {
  grid-template-columns: 188px minmax(0, 1fr) 380px;
}

/* 左侧页码栏 */
.ppt-sidebar {
  background: var(--ppt-surface);
  border-right: 1px solid var(--ppt-border);
  overflow-y: auto;
  overflow-x: hidden;
  padding: 10px;
}

.ppt-thumbnail {
  width: 100%;
  min-height: 72px;
  padding: 8px;
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  cursor: pointer;
  position: relative;
  border: 1px solid transparent;
  border-radius: 4px;
  color: inherit;
  background: transparent;
  text-align: left;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.ppt-thumbnail:hover {
  background: var(--ppt-surface-hover);
  border-color: var(--ppt-border);
}

.ppt-thumbnail.active {
  background: rgba(56, 189, 248, 0.12);
  border-color: rgba(56, 189, 248, 0.48);
  box-shadow: inset 3px 0 0 var(--ppt-accent);
}

.ppt-thumbnail.has-overflow {
  border-color: rgba(252, 165, 165, 0.8);
  background: rgba(220, 38, 38, 0.1);
}

.ppt-thumbnail.has-overflow .ppt-thumbnail-status {
  color: #FCA5A5;
}

.ppt-thumbnail.has-quality-issue {
  border-color: rgba(253, 224, 71, 0.82);
  background: rgba(161, 98, 7, 0.14);
  box-shadow: inset 3px 0 0 #FDE047;
}

.ppt-thumbnail.has-quality-issue .ppt-thumbnail-status {
  color: #FDE68A;
}

.ppt-thumbnail-number {
  align-self: start;
  padding-top: 1px;
  font-size: 11px;
  font-weight: 500;
  color: var(--ppt-text-secondary);
  font-variant-numeric: tabular-nums;
}

.ppt-thumbnail:has(.ppt-thumbnail-preview) {
  grid-template-columns: 64px minmax(0, 1fr);
  min-height: 68px;
}

.ppt-thumbnail-preview {
  width: 64px;
  aspect-ratio: 1587 / 1123;
  border: 1px solid #39404C;
  border-radius: 2px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #FFFFFF;
  color: #334155;
  font-size: 11px;
  line-height: 1;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.28);
}

.ppt-thumbnail-preview img,
.ppt-thumbnail-preview canvas,
.ppt-thumbnail-preview svg {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.ppt-thumbnail-meta {
  min-width: 0;
  display: grid;
  align-content: center;
  gap: 3px;
}

.ppt-thumbnail-meta .ppt-thumbnail-number {
  padding: 0;
}

.ppt-thumbnail-title {
  min-width: 0;
  color: var(--ppt-text-primary);
  font-size: 11.5px;
  line-height: 1.35;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ppt-thumbnail-status {
  min-width: 0;
  color: var(--ppt-text-secondary);
  font-size: 10.5px;
  line-height: 1.35;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ppt-thumbnail-status[data-tone="success"] { color: #86EFAC; }
.ppt-thumbnail-status[data-tone="warning"] { color: #FDE68A; }
.ppt-thumbnail-status[data-tone="error"] { color: #FCA5A5; }
.ppt-thumbnail.pending .ppt-thumbnail-preview { opacity: 0.42; }
.ppt-thumbnail.pending .ppt-thumbnail-status {
  color: var(--ppt-text-tertiary);
  animation: ppt-pending-pulse 1.6s ease-in-out infinite;
}

.ppt-thumbnail.active .ppt-thumbnail-number {
  color: var(--ppt-accent);
  font-weight: 600;
}

/* 占位页（并发生成中还没回填）：页码压暗并轻微呼吸，表示"排队中" */
.ppt-thumbnail.pending .ppt-thumbnail-number {
  color: var(--ppt-text-tertiary);
  animation: ppt-pending-pulse 1.6s ease-in-out infinite;
}

@keyframes ppt-pending-pulse {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 0.8; }
}

/* 右侧预览区 */
.ppt-main-viewer {
  background: var(--ppt-bg);
  overflow: auto;
  padding: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ppt-editor-panel {
  min-width: 0;
  background: var(--ppt-surface);
  border-left: 1px solid var(--ppt-border);
  color: var(--ppt-text-primary);
  overflow: hidden;
}

.ppt-editor-panel[hidden] { display: none; }

.ppt-editor-header {
  height: 58px;
  padding: 0 14px 0 16px;
  border-bottom: 1px solid var(--ppt-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-sizing: border-box;
}

.ppt-editor-header > div {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.ppt-editor-header strong { font-size: 13px; font-weight: 600; }
.ppt-editor-header span { font-size: 11px; color: var(--ppt-text-tertiary); }

.ppt-editor-close {
  width: 30px;
  height: 30px;
  border: 0;
  background: transparent;
  color: var(--ppt-text-secondary);
  font-size: 22px;
  cursor: pointer;
}

.ppt-editor-toolbar {
  height: 46px;
  padding: 8px 14px;
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--ppt-border);
  box-sizing: border-box;
}

.ppt-editor-toolbar button,
.ppt-editor-image-row button {
  min-height: 28px;
  padding: 0 10px;
  background: transparent;
  border: 1px solid var(--ppt-border);
  border-radius: 4px;
  color: var(--ppt-text-secondary);
  font-size: 12px;
  cursor: pointer;
}

.ppt-editor-toolbar button:hover:not(:disabled),
.ppt-editor-image-row button:hover:not(:disabled) {
  border-color: var(--ppt-accent);
  color: var(--ppt-accent);
}

.ppt-editor-toolbar button.danger,
.ppt-editor-image-row button.danger { color: #FCA5A5; }

.ppt-editor-scroll {
  height: calc(100% - 104px);
  overflow: auto;
  padding: 14px;
  box-sizing: border-box;
}

.ppt-editor-group {
  border: 0;
  padding: 0;
  margin: 0 0 14px;
}

.ppt-editor-group .ppt-editor-group {
  padding: 10px;
  border: 1px solid var(--ppt-border);
  border-radius: 5px;
  margin-bottom: 10px;
}

.ppt-editor-group h4 {
  margin: 0 0 8px;
  font-size: 12px;
  color: var(--ppt-text-secondary);
  font-weight: 600;
}

.ppt-editor-field { display: block; margin-bottom: 10px; }

.ppt-editor-field > span {
  display: block;
  margin-bottom: 5px;
  font-size: 11px;
  color: var(--ppt-text-tertiary);
}

.ppt-editor-field input,
.ppt-editor-field textarea {
  width: 100%;
  padding: 8px 9px;
  border: 1px solid var(--ppt-border);
  border-radius: 4px;
  background: var(--ppt-bg);
  color: var(--ppt-text-primary);
  font: 12px/1.55 var(--ppt-font-sans);
  resize: vertical;
  box-sizing: border-box;
}

.ppt-editor-field input:focus,
.ppt-editor-field textarea:focus {
  outline: 2px solid rgba(56, 189, 248, 0.25);
  border-color: var(--ppt-accent);
}

.ppt-editor-image-row {
  min-height: 36px;
  display: flex;
  align-items: center;
  gap: 6px;
  border-top: 1px solid var(--ppt-border);
}

.ppt-editor-image-row span {
  min-width: 0;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12px;
}

.ppt-editor-empty {
  padding: 24px 16px;
  color: var(--ppt-text-secondary);
  font-size: 13px;
}

.ppt-icon-btn.active {
  border-color: var(--ppt-accent);
  color: var(--ppt-accent);
  background: rgba(56, 189, 248, 0.12);
}

/* 导出用的打印容器：屏幕上永不占位。
   打印时由 ppt-print.css（临时激活）用 !important 覆盖成 display: block。
   这条必须放在本表而不是 ppt-print.css——后者默认 media="not all" 不生效，
   放那儿的话导出瞬间会有 N 张实尺寸页面把屏幕撑开。 */
#pptPrintRoot {
  display: none;
}

/* 封面页/内容页模板的外层壳。
   它在固定画布 .ppt-slide-canvas 内部，所以撑满画布即可，不要再用 aspect-ratio
   ——比例已由画布的 1587×1123 决定，重复声明会打架。
   （这条规则被误删过一次，导致封面页里 height:100% 的子元素塌成 0 高。） */
.ppt-slide {
  width: 100%;
  height: 100%;
  background: #FFFFFF;
  overflow: hidden;
  position: relative;
}

/* 幻灯片舞台 */
.ppt-slide-stage {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--ppt-radius);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  background: #FFFFFF;
}

.ppt-slide-canvas {
  width: 1587px;
  height: 1123px;
  transform-origin: top left;
  background: #FFFFFF;
  overflow: hidden;
}

.ppt-slide-canvas [data-ppt-fit].ppt-content-overflow {
  outline: 5px solid #DC2626;
  outline-offset: -5px;
}

.ppt-audit-canvas {
  position: fixed;
  left: -10000px;
  top: 0;
  transform: none !important;
  visibility: hidden;
  pointer-events: none;
}

/* 加载状态 */
.ppt-loading {
  text-align: center;
  padding: 60px 24px;
  color: var(--ppt-text-secondary);
}

.ppt-loading-spinner {
  width: 40px;
  height: 40px;
  margin: 0 auto 16px;
  border: 3px solid var(--ppt-border);
  border-top-color: var(--ppt-accent);
  border-radius: 50%;
  animation: ppt-spin 0.8s linear infinite;
}

@keyframes ppt-spin {
  to {
    transform: rotate(360deg);
  }
}

.ppt-loading-text {
  font-size: 15px;
  margin: 0;
}

/* 错误状态 */
.ppt-error {
  text-align: center;
  padding: 60px 24px;
  color: #EF4444;
}

.ppt-error-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  color: #EF4444;
}

.ppt-error-text {
  font-size: 15px;
  margin: 0;
}

/* 滚动条 */
.ppt-sidebar::-webkit-scrollbar {
  width: 4px;
}

.ppt-sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.ppt-sidebar::-webkit-scrollbar-thumb {
  background: var(--ppt-border);
  border-radius: 2px;
}

.ppt-sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--ppt-accent);
}

/* 加载与生成状态 */
.ppt-generating {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  gap: 16px;
  color: var(--ppt-text-secondary);
}

.ppt-generating-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--ppt-border);
  border-top-color: var(--ppt-accent);
  border-radius: 50%;
  animation: ppt-spin 0.8s linear infinite;
}

@keyframes ppt-spin {
  to { transform: rotate(360deg); }
}

.ppt-generating-text {
  font-size: 14px;
  margin: 0;
}


/* 页数滑块 */
.ppt-pages-slider {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.ppt-pages-slider-track {
  position: relative;
  flex: 1;
  min-width: 0;
  display: block;
  padding-bottom: 20px;
  --ppt-pages-fill: 0%;
}

.ppt-pages-slider-input {
  -webkit-appearance: none;
  appearance: none;
  display: block;
  width: 100%;
  height: 4px;
  margin: 6px 0 0;
  border-radius: 2px;
  outline: none;
  cursor: pointer;
  background: linear-gradient(
    to right,
    var(--ppt-accent) 0%,
    var(--ppt-accent) var(--ppt-pages-fill),
    var(--ppt-border) var(--ppt-pages-fill),
    var(--ppt-border) 100%
  );
}

.ppt-pages-slider-input::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--ppt-accent);
  border: 2px solid var(--ppt-bg);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  cursor: pointer;
}

.ppt-pages-slider-input::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--ppt-accent);
  border: 2px solid var(--ppt-bg);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
  cursor: pointer;
}

.ppt-pages-slider-ticks {
  position: absolute;
  left: 8px;
  right: 8px;
  top: 20px;
  height: 14px;
  pointer-events: none;
}

.ppt-pages-slider-tick {
  position: absolute;
  transform: translateX(-50%);
  font-size: 11px;
  color: var(--ppt-text-tertiary);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.ppt-pages-slider-out {
  flex: none;
  min-width: 140px;
  text-align: right;
  font-size: 13px;
  font-weight: 500;
  color: var(--ppt-text-primary);
  padding-top: 0;
  font-variant-numeric: tabular-nums;
}

.ppt-actions {
  display: flex;
  gap: 12px;
  margin-top: 1px;
  padding-top: 12px;
  border-top: 1px solid var(--ppt-border);
  justify-content: flex-end;
  grid-column: 1 / -1;
}

.ppt-actions .ppt-btn-primary {
  min-width: 176px;
}

.ppt-button-spinner {
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: ppt-spin 0.8s linear infinite;
}

.ppt-history-section {
  padding: 14px 16px 16px;
}

.ppt-history-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-bottom: 12px;
}

.ppt-history-heading > div { min-width: 0; }

.ppt-history-refresh {
  flex: none;
  min-height: 32px;
  padding: 6px 11px;
  font-size: 12px;
}

.ppt-history-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border: 1px solid var(--ppt-border);
  border-radius: 5px;
  overflow: hidden;
}

.ppt-history-item {
  min-width: 0;
  min-height: 50px;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 8px 10px 8px 12px;
  border-bottom: 1px solid var(--ppt-border);
  background: var(--ppt-bg);
  box-sizing: border-box;
  transition: background-color 0.15s ease;
}

.ppt-history-item:last-child { border-bottom: 0; }
.ppt-history-item:hover { background: var(--ppt-surface-hover); }

.ppt-history-item.loading {
  opacity: 0.58;
  pointer-events: none;
}

.ppt-history-main {
  min-width: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.ppt-history-main strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 12.5px;
  font-weight: 600;
}

.ppt-history-main span,
.ppt-history-empty {
  font-size: 11px;
  color: var(--ppt-text-tertiary);
  font-variant-numeric: tabular-nums;
}

.ppt-history-empty {
  grid-column: 1 / -1;
  min-height: 52px;
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.ppt-history-error { color: #B91C1C; }

.ppt-history-actions {
  flex: none;
  display: flex;
  align-items: center;
  gap: 4px;
}

.ppt-history-actions button {
  min-width: 42px;
  min-height: 30px;
  border: 1px solid transparent;
  border-radius: 4px;
  background: transparent;
  padding: 5px 8px;
  color: var(--ppt-accent);
  font-size: 12px;
  cursor: pointer;
}

.ppt-history-actions button:hover {
  border-color: var(--ppt-border);
  background: var(--ppt-bg);
}

.ppt-history-actions .ppt-history-delete { color: #B91C1C; }

/* 全局 reset 会移除 outline，PPT 工作台在此恢复统一键盘焦点。 */
.ppt-generator-container :where(button, input, select, textarea, [tabindex]):focus-visible,
.ppt-preview-container :where(button, input, select, textarea, [tabindex]):focus-visible {
  outline: 2px solid var(--ppt-accent);
  outline-offset: 2px;
}

.ppt-choice-card:has(input:focus-visible) {
  outline: 2px solid var(--ppt-accent);
  outline-offset: 2px;
}

.ppt-choice-card input:focus-visible {
  outline: none;
}

.ppt-thumbnail:focus-visible {
  border-color: var(--ppt-accent);
  outline-offset: -2px;
}

.ppt-editor-toolbar button:disabled,
.ppt-editor-image-row button:disabled {
  opacity: 0.38;
  cursor: not-allowed;
}

@media (max-width: 1399px) {
  .ppt-preview-heading {
    flex-basis: 220px;
    max-width: 250px;
  }

  .ppt-preview-header { gap: 8px; }
  .ppt-preview-actions { gap: 4px; }
  .ppt-toolbar-divider { margin: 0 2px; }
  .ppt-toolbar-button { padding-inline: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  .ppt-upload-zone,
  .ppt-choice-card,
  .ppt-btn-primary,
  .ppt-btn-secondary,
  .ppt-preview-status,
  .ppt-icon-btn,
  .ppt-thumbnail,
  .ppt-history-item,
  .ppt-file-remove {
    transition: none;
  }

  .ppt-btn-primary:hover:not(:disabled) { transform: none; }

  .ppt-thumbnail.pending .ppt-thumbnail-number,
  .ppt-thumbnail.pending .ppt-thumbnail-status,
  .ppt-save-state[data-tone="saving"]::before,
  .ppt-save-state.saving::before,
  .ppt-loading-spinner,
  .ppt-generating-spinner,
  .ppt-button-spinner {
    animation: none;
  }
}