/* ============================================================
   frontend/styles.css —— 布局与组件样式（对齐 design-preview）
   颜色/字号一律引用 tokens.css（--el-* / --c-*），禁止裸色值。
   ============================================================ */

/* ==================== 基础 ==================== */

/* 全局 border-box：显式宽度 + 内边距/边框不再互相撑破（旧版样式有，重写时须保留） */
*,
*::before,
*::after {
  box-sizing: border-box;
}

/* 全局预留滚动条空间：滚动条出现/消失（如表格在长短页间切换）时
   内容宽度不变，消除布局抖动。不支持的浏览器自动回退为原行为。 */
html {
  scrollbar-gutter: stable;
}

[hidden] {
  display: none !important;
}

.visually-hidden,
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -48px;
  left: 8px;
  z-index: 200;
  padding: 8px 14px;
  color: var(--el-text-color-primary);
  background: var(--el-bg-color);
  border: 1px solid var(--el-border-color);
  border-radius: var(--el-border-radius-base);
  text-decoration: none;
  transition: top 160ms;
}

.skip-link:focus-visible {
  top: 8px;
}

/* ==================== 布局外壳 ==================== */

.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--topbar-height);
  background: var(--el-bg-color);
  border-bottom: 1px solid var(--el-border-color);
}

.topbar__inner {
  display: flex;
  align-items: center;
  max-width: 1400px;
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
}

.topbar__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.topbar__brand-mark {
  display: grid;
  width: 30px;
  height: 30px;
  place-items: center;
  color: var(--el-color-white);
  background: var(--el-color-primary);
  border-radius: var(--el-border-radius-base);
}

.topbar__brand-mark svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentcolor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.topbar__brand-name {
  color: var(--el-text-color-primary);
  font-size: 16px;
  font-weight: 600;
}

.topbar__brand-sub {
  padding-left: 10px;
  border-left: 1px solid var(--el-border-color-light);
  color: var(--el-text-color-secondary);
  font-size: 13px;
}

.topbar__status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  font-size: 13px;
}

.topbar__status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-closed);
}

/* 在线/离线状态由 app.js 切换语义色 */
.topbar__status.is-online .topbar__status-dot { background: var(--c-progress); }
.topbar__status.is-offline .topbar__status-dot { background: var(--c-risk); }
.topbar__status.is-checking .topbar__status-dot { background: var(--c-closed); }

.topbar__status-label {
  color: var(--el-text-color-regular);
  font-weight: 500;
}

.topbar__status-text {
  color: var(--el-text-color-secondary);
}

.topbar__status.is-online .topbar__status-text { color: var(--c-progress); font-weight: 500; }
.topbar__status.is-offline .topbar__status-text { color: var(--c-risk); font-weight: 500; }

/* ==================== 状态彩字（不用彩色底徽章） ==================== */

.status {
  font-size: 13px;
  font-weight: 500;
}

.status--progress { color: var(--c-progress); }
.status--pending  { color: var(--c-pending); }
.status--closed   { color: var(--c-closed); }
.status--risk     { color: var(--c-risk); }
.status--warn     { color: var(--c-warn); }

/* ==================== 舞台容器 ==================== */

.stage {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px;
}

.stage--idle {
  display: flex;
  justify-content: center;
}

/* ==================== 空闲态：设置卡 ==================== */

.setup-card {
  width: 100%;
  padding: 28px 32px;
  background: var(--el-bg-color);
  border: 1px solid var(--el-border-color-light);
  border-radius: var(--el-border-radius-base);
}

.setup-card__title {
  margin: 0;
  font-size: 20px;
  font-weight: 600;
}

.setup-card__sub {
  margin: 4px 0 20px;
  color: var(--el-text-color-secondary);
  font-size: 13px;
}

/* ---------- 拖拽区 ---------- */

.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 36px 20px;
  cursor: pointer;
  background: var(--el-fill-color-lighter);
  border: 1px dashed var(--el-border-color-dark);
  border-radius: var(--el-border-radius-base);
  transition: border-color 160ms, background 160ms;
}

.dropzone:hover,
.dropzone:focus-visible {
  border-color: var(--el-color-primary);
  background: var(--el-color-primary-light-9);
  outline: none;
}

.dropzone.is-dragging {
  border-color: var(--el-color-primary);
  background: var(--el-color-primary-light-9);
}

.dropzone.is-locked {
  cursor: not-allowed;
  color: var(--el-text-color-secondary);
  background: var(--el-fill-color-light);
  border-color: var(--el-border-color-light);
}

.dropzone__icon {
  margin-bottom: 8px;
  color: var(--el-color-primary);
}

.dropzone__icon svg {
  width: 40px;
  height: 40px;
  fill: none;
  stroke: currentcolor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.dropzone.is-locked .dropzone__icon {
  color: var(--el-text-color-secondary);
}

.dropzone__title {
  color: var(--el-text-color-primary);
  font-size: 15px;
  font-weight: 600;
}

.dropzone__hint {
  margin-top: 6px;
  color: var(--el-text-color-secondary);
  font-size: 13px;
}

/* ---------- 空闲态分栏：左侧设置卡 + 右侧已选文件栏 ----------
   文件栏 sticky + 高度锁一屏、列表内部滚动：传再多份也不撑高页面，
   「开始识别」始终留在左侧设置卡原位。无文件时退化为居中单卡。 */

.idle-grid {
  display: grid;
  width: 100%;
  max-width: 1160px;
  grid-template-columns: minmax(0, 760px);
  justify-content: center;
  align-items: start;
  margin-top: 4vh;
}

.stage--idle.has-files .idle-grid {
  grid-template-columns: minmax(0, 1fr) minmax(300px, 360px);
}

.files-panel {
  position: sticky;
  top: calc(var(--topbar-height) + 24px + 4vh);
  /* 顶部偏移 = 顶栏 + 舞台内边距 24px + 栅格上边距 4vh；扣除 52px 给舞台上下内边距留量 */
  max-height: calc(100dvh - var(--topbar-height) - 52px - 4vh);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--el-bg-color);
  border: 1px solid var(--el-border-color-light);
  border-radius: var(--el-border-radius-base);
}

.files-panel__head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--el-border-color-lighter);
  background: var(--el-fill-color-light);
}

.files-panel__title {
  color: var(--el-text-color-primary);
  font-weight: 600;
}

.files-panel__count {
  padding: 0 8px;
  color: var(--el-color-primary);
  background: var(--el-color-primary-light-9);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}

.files-panel__head .text-button {
  margin-left: auto;
}

.files-panel__list {
  flex: 1;
  min-height: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-y: auto;
  overscroll-behavior: contain;
  /* 文件增减导致滚动条出现/消失时不抖动 */
  scrollbar-gutter: stable;
  scrollbar-width: thin;
  scrollbar-color: var(--el-border-color-dark) transparent;
}

.pending-file {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--el-border-color-lighter);
  font-size: 13px;
}

.pending-file:last-child {
  border-bottom: 0;
}

.pending-file__name {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  color: var(--el-text-color-primary);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.pending-file__size {
  flex: 0 0 auto;
  color: var(--el-text-color-secondary);
  font-variant-numeric: tabular-nums;
}

/* ---------- 文档类型分段控件（el-radio-button 形态） ---------- */

.setup-card__row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.setup-card__label {
  color: var(--el-text-color-regular);
  font-weight: 500;
}

.setup-card__row-hint {
  color: var(--el-text-color-secondary);
  font-size: 13px;
}

.segmented,
.adv-radios {
  display: inline-flex;
}

.segmented {
  border: 1px solid var(--el-border-color);
  border-radius: var(--el-border-radius-base);
}

.mode-option {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.segmented .mode-option + .mode-option {
  border-left: 1px solid var(--el-border-color);
}

.segmented .mode-option input,
.adv-radios .mode-option input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.segmented .mode-option span {
  padding: 7px 20px;
  color: var(--el-text-color-regular);
  font-size: 14px;
  cursor: pointer;
  transition: color 160ms, background 160ms;
}

.segmented .mode-option:hover span {
  color: var(--el-color-primary);
}

.segmented .mode-option.is-selected span {
  color: var(--el-color-primary);
  background: var(--el-color-primary-light-9);
  font-weight: 500;
}

.segmented .mode-option input:focus-visible + span {
  outline: 2px solid var(--el-color-primary-light-5);
  outline-offset: -2px;
}

/* ---------- 高级选项折叠 ---------- */

.adv {
  margin-top: 16px;
  border-top: 1px solid var(--el-border-color-lighter);
}

.adv__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  color: var(--el-text-color-regular);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.adv__summary::-webkit-details-marker {
  display: none;
}

.adv__summary:hover {
  color: var(--el-color-primary);
}

.adv__arrow {
  width: 8px;
  height: 8px;
  border-right: 1.5px solid var(--el-text-color-secondary);
  border-bottom: 1.5px solid var(--el-text-color-secondary);
  transform: rotate(45deg);
  transition: transform 160ms;
}

.adv[open] .adv__arrow {
  transform: rotate(225deg);
}

.adv__body {
  padding: 4px 0 16px;
}

.adv-block + .adv-block {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--el-border-color-lighter);
}

.adv-block__label {
  margin-bottom: 8px;
  color: var(--el-text-color-regular);
  font-weight: 500;
}

.adv-block__hint {
  margin-top: 6px;
  color: var(--el-text-color-secondary);
  font-size: 13px;
}

/* 高级选项内的识别模式：el-radio 圆点形态 */
.adv-radios {
  gap: 24px;
}

.adv-radios .mode-option {
  gap: 8px;
}

.adv-radios .mode-option span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--el-text-color-regular);
  font-size: 14px;
  cursor: pointer;
}

.adv-radios .mode-option span::before {
  content: "";
  width: 14px;
  height: 14px;
  border: 1px solid var(--el-border-color-dark);
  border-radius: 50%;
  background: var(--el-bg-color);
  transition: border-color 160ms, box-shadow 160ms;
}

.adv-radios .mode-option:hover span {
  color: var(--el-color-primary);
}

.adv-radios .mode-option.is-selected span {
  color: var(--el-color-primary);
}

.adv-radios .mode-option.is-selected span::before {
  border-color: var(--el-color-primary);
  box-shadow: inset 0 0 0 4px var(--el-color-primary);
}

.adv-radios .mode-option input:focus-visible + span::before {
  outline: 2px solid var(--el-color-primary-light-5);
  outline-offset: 2px;
}

/* 水印类型 / 复选 */
.adv-checks {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.adv-check {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--el-text-color-regular);
  font-size: 14px;
  cursor: pointer;
}

.adv-check input {
  width: 14px;
  height: 14px;
  margin: 0;
  accent-color: var(--el-color-primary);
  cursor: pointer;
}

/* 识别增强开关（el-switch 形态） */
.adv-switch {
  display: inline-flex;
  align-items: center;
  cursor: pointer;
}

.adv-switch input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.adv-switch-track {
  display: inline-flex;
  align-items: center;
  width: 40px;
  height: 20px;
  padding: 2px;
  background: var(--el-border-color);
  border-radius: 999px;
  transition: background 160ms;
}

.adv-switch-thumb {
  width: 16px;
  height: 16px;
  background: var(--el-color-white);
  border-radius: 50%;
  transition: transform 160ms;
}

.adv-switch input:checked + .adv-switch-track {
  background: var(--el-color-primary);
}

.adv-switch input:checked + .adv-switch-track .adv-switch-thumb {
  transform: translateX(20px);
}

.adv-switch input:focus-visible + .adv-switch-track {
  outline: 2px solid var(--el-color-primary-light-5);
  outline-offset: 2px;
}

.adv-switch-label {
  margin-left: 10px;
  color: var(--el-text-color-regular);
  font-size: 13px;
}

.adv-switch-label::after {
  content: "已关闭";
}

.adv-switch input:checked ~ .adv-switch-label::after {
  content: "已开启";
}

/* ---------- 主操作 ---------- */

.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 32px;
  padding: 0 15px;
  color: var(--el-color-white);
  background: var(--el-color-primary);
  border: 1px solid var(--el-color-primary);
  border-radius: var(--el-border-radius-base);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
  transition: background 160ms, border-color 160ms, opacity 160ms;
}

.primary-button:hover {
  background: var(--el-color-primary-light-3);
  border-color: var(--el-color-primary-light-3);
}

.primary-button:active {
  background: var(--el-color-primary-dark-2);
  border-color: var(--el-color-primary-dark-2);
}

.primary-button:disabled {
  cursor: not-allowed;
  background: var(--el-color-primary-light-5);
  border-color: var(--el-color-primary-light-5);
  opacity: 1;
}

.primary-button svg {
  width: 14px;
  height: 14px;
  fill: none;
  stroke: currentcolor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 32px;
  padding: 0 15px;
  color: var(--el-text-color-regular);
  background: var(--el-bg-color);
  border: 1px solid var(--el-border-color);
  border-radius: var(--el-border-radius-base);
  font: inherit;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  transition: color 160ms, border-color 160ms, background 160ms;
}

.secondary-button:hover {
  color: var(--el-color-primary);
  background: var(--el-color-primary-light-9);
  border-color: var(--el-color-primary-light-7);
}

.secondary-button:disabled {
  color: var(--el-text-color-secondary);
  background: var(--el-fill-color-light);
  border-color: var(--el-border-color-lighter);
  cursor: not-allowed;
}

.text-button {
  padding: 0;
  color: var(--el-color-primary);
  background: none;
  border: 0;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}

.text-button:hover {
  color: var(--el-color-primary-light-3);
}

.setup-card__start {
  width: 100%;
  height: 40px;
  margin-top: 20px;
  font-size: 15px;
}

.action-feedback {
  min-height: 20px;
  margin: 10px 0 0;
  color: var(--el-text-color-secondary);
  font-size: 13px;
  text-align: center;
}

.action-feedback[data-tone="error"] {
  color: var(--c-risk);
}

.action-feedback[data-tone="success"] {
  color: var(--c-progress);
}

/* ---------- 三步引导 ---------- */

.guide {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 24px 0 0;
  padding: 16px 0 0;
  list-style: none;
  border-top: 1px solid var(--el-border-color-lighter);
}

.guide__step {
  display: flex;
  gap: 10px;
}

.guide__num {
  display: grid;
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
  place-items: center;
  color: var(--el-color-primary);
  background: var(--el-color-primary-light-9);
  border-radius: 50%;
  font-size: 13px;
  font-weight: 600;
}

.guide__name {
  color: var(--el-text-color-primary);
  font-weight: 500;
}

.guide__desc {
  margin-top: 2px;
  color: var(--el-text-color-secondary);
  font-size: 13px;
}

/* ==================== 识别中 / 已完成 ==================== */

/* 批次条：吸顶跟随（顶栏之下） */
.batch-bar {
  position: sticky;
  top: var(--topbar-height);
  z-index: 90;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 12px 20px;
  background: var(--el-bg-color);
  border: 1px solid var(--el-border-color-light);
  border-radius: var(--el-border-radius-base);
  box-shadow: 0 2px 8px var(--el-border-color-lighter);
}

.batch-bar__progress {
  flex: 1 1 auto;
  min-width: 200px;
}

.batch-bar__progress-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
}

.batch-bar__meta {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  min-width: 0;
}

.batch-bar__title {
  overflow: hidden;
  color: var(--el-text-color-regular);
  font-size: 13px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.batch-bar__ratio {
  color: var(--el-text-color-primary);
  font-size: 13px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.batch-bar__track {
  height: 8px;
  overflow: hidden;
  background: var(--el-fill-color);
  border-radius: 999px;
}

.batch-bar__track i {
  display: block;
  height: 100%;
  width: 0;
  background: var(--c-pending);
  border-radius: 999px;
  transition: width 300ms;
}

.batch-bar.is-done .batch-bar__track i {
  background: var(--c-progress);
}

.batch-bar__counts {
  display: flex;
  gap: 14px;
  flex: 0 0 auto;
}

.batch-bar__actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 10px;
}

/* 批次条操作按钮统一最小宽度：识别中「清空批次」↔ 完成态「开始下一批」
   互换时按钮宽度不变，文案改动也不会引起批次条抖动 */
.batch-bar__actions .primary-button,
.batch-bar__actions .secondary-button {
  min-width: 102px;
}

/* ---------- 导出下拉 ---------- */

.export-dropdown {
  position: relative;
}

.export-dropdown .caret {
  width: 12px;
  height: 12px;
  transition: transform 160ms;
}

.export-dropdown.is-open .caret {
  transform: rotate(180deg);
}

.export-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  z-index: 120;
  min-width: 208px;
  padding: 6px 0;
  background: var(--el-bg-color);
  border: 1px solid var(--el-border-color-light);
  border-radius: var(--el-border-radius-base);
  box-shadow: 0 4px 16px var(--el-border-color-lighter);
}

.export-menu__item {
  display: block;
  padding: 8px 16px;
  color: var(--el-text-color-regular);
  font-size: 14px;
  text-decoration: none;
  transition: background 160ms, color 160ms;
}

.export-menu__item:hover {
  color: var(--el-color-primary);
  background: var(--el-color-primary-light-9);
}

.export-menu__item.is-disabled {
  color: var(--el-text-color-secondary);
  cursor: not-allowed;
  background: none;
}

/* ---------- 工作区双栏 ---------- */

.work-grid {
  display: grid;
  grid-template-columns: minmax(320px, 400px) minmax(0, 1fr);
  gap: 16px;
  margin-top: 16px;
  align-items: start;
}

/* ---------- 队列卡（主） ---------- */

.queue-card {
  background: var(--el-bg-color);
  border: 1px solid var(--el-border-color-light);
  border-radius: var(--el-border-radius-base);
  overflow: hidden;
}

.queue-card__head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--el-border-color-lighter);
  background: var(--el-fill-color-light);
}

.queue-card__title {
  color: var(--el-text-color-primary);
  font-weight: 600;
}

.queue-card__count {
  padding: 0 8px;
  color: var(--el-color-primary);
  background: var(--el-color-primary-light-9);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}

.queue-card__list {
  max-height: calc(100dvh - var(--topbar-height) - 200px);
  overflow-y: auto;
  /* 任务增减导致滚动条出现/消失时不抖动 */
  scrollbar-gutter: stable;
}

.queue-item {
  position: relative;
  display: flex;
  width: 100%;
  align-items: center;
  gap: 12px;
  padding: 12px 16px 14px;
  background: var(--el-bg-color);
  border: 0;
  border-bottom: 1px solid var(--el-border-color-lighter);
  cursor: pointer;
  text-align: left;
  font: inherit;
  transition: background 160ms;
}

.queue-item:hover {
  background: var(--el-fill-color-lighter);
}

.queue-item.is-selected {
  background: var(--el-color-primary-light-9);
  box-shadow: inset 3px 0 0 var(--el-color-primary);
}

.queue-item__main {
  display: flex;
  min-width: 0;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 2px;
}

.queue-item__name {
  overflow: hidden;
  color: var(--el-text-color-primary);
  font-size: 14px;
  font-weight: 500;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.queue-item__meta {
  overflow: hidden;
  color: var(--el-text-color-secondary);
  font-size: 13px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.queue-item__side {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 10px;
}

.queue-item__state {
  font-size: 13px;
  font-weight: 500;
}

.queue-item__action {
  color: var(--el-color-primary);
  font-size: 13px;
  cursor: pointer;
}

.queue-item__action:hover {
  color: var(--el-color-primary-light-3);
}

.queue-item__progress {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 3px;
  overflow: hidden;
  background: var(--el-fill-color);
}

.queue-item__progress i {
  display: block;
  height: 100%;
  background: var(--el-color-primary);
  transition: width 200ms;
}

/* ---------- 预览卡（详情） ---------- */

.preview-card {
  min-height: 420px;
  display: flex;
  flex-direction: column;
  background: var(--el-bg-color);
  border: 1px solid var(--el-border-color-light);
  border-radius: var(--el-border-radius-base);
}

.preview-card__toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  flex-wrap: wrap;
  padding: 14px 20px;
  border-bottom: 1px solid var(--el-border-color-lighter);
  background: var(--el-fill-color-light);
  border-radius: var(--el-border-radius-base) var(--el-border-radius-base) 0 0;
}

.preview-card__name {
  overflow: hidden;
  color: var(--el-text-color-primary);
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.preview-card__meta {
  display: flex;
  flex: 1 1 auto;
  min-width: 0;
  gap: 6px 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
  color: var(--el-text-color-secondary);
  font-size: 13px;
}

/* sheet 标签（el-tabs 形态） */
.preview-card__tabs {
  display: flex;
  gap: 4px;
  padding: 0 20px;
  border-bottom: 1px solid var(--el-border-color-lighter);
}

.preview-tab {
  position: relative;
  padding: 12px 4px;
  margin-right: 16px;
  color: var(--el-text-color-regular);
  background: none;
  border: 0;
  font: inherit;
  font-size: 14px;
  cursor: pointer;
  transition: color 160ms;
}

.preview-tab:hover {
  color: var(--el-color-primary);
}

.preview-tab.is-active {
  color: var(--el-color-primary);
  font-weight: 500;
}

.preview-tab.is-active::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 2px;
  background: var(--el-color-primary);
}

/* 带边框表格预览：容器留白 + 滚动区 */
.table-scroll {
  flex: 1;
  min-height: 0;
  max-height: min(60vh, 520px);
  margin: 16px 20px 20px;
  border: 1px solid var(--el-border-color-lighter);
  border-radius: var(--el-border-radius-base);
  overflow: auto;
  overscroll-behavior: contain;
  /* 容器级预留：长表 ↔ 短表切换时滚动条出现/消失不再挤压列宽 */
  scrollbar-gutter: stable;
  scrollbar-width: thin;
  scrollbar-color: var(--el-border-color-dark) transparent;
}

.table-scroll::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

.table-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.table-scroll::-webkit-scrollbar-thumb {
  border: 3px solid transparent;
  border-radius: 999px;
  background: var(--el-border-color-dark);
  background-clip: content-box;
}

.table-scroll:focus-visible {
  outline: 2px solid var(--el-color-primary-light-5);
  outline-offset: -2px;
}

/* ---------- 结果表格（tableHtml 由后端注入，语义类由后端 _style_selected_table 生成） ---------- */

.result-table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  table-layout: auto;
  color: var(--el-text-color-primary);
  font-size: 14px;
  line-height: 1.45;
}

.result-table th,
.result-table td {
  padding: 10px 14px;
  border-right: 1px solid var(--el-border-color-lighter);
  border-bottom: 1px solid var(--el-border-color-lighter);
  overflow-wrap: break-word;
  text-align: left;
  vertical-align: top;
}

.result-table th:last-child,
.result-table td:last-child {
  border-right: 0;
}

.result-table th {
  padding-block: 11px;
  color: var(--el-text-color-secondary);
  background: var(--el-fill-color-light);
  font-size: 13px;
  font-weight: 600;
  white-space: normal;
}

/* 表头吸顶：长表纵向滚动时保持列名可见。
   border-collapse 下 sticky 单元格的 border-bottom 会失效，用 inset 阴影补底边。 */
.result-table tr.header-row > * {
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--el-fill-color-light);
  box-shadow: inset 0 -1px 0 var(--el-border-color-light);
}

/* 斑马纹与悬停用 :where() 压低优先级，避免覆盖表头/合计/备注行的语义底色。 */
:where(.result-table tbody tr:nth-child(even)) td {
  background: var(--el-fill-color-lighter);
}

:where(.result-table tbody tr:hover:not(.header-row)) td {
  background: var(--el-fill-color);
}

.result-table td:first-child {
  color: var(--el-text-color-secondary);
  font-variant-numeric: tabular-nums;
}

.result-table .center-cell {
  text-align: center;
  white-space: nowrap;
}

.result-table .number-cell {
  text-align: right;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.result-table .summary-row td {
  border-top: 2px solid var(--el-border-color-light);
  background: var(--el-fill-color-light);
  color: var(--el-text-color-regular);
  font-size: 13px;
  font-weight: 700;
}

.result-table .summary-row td:last-child {
  color: var(--el-color-primary);
  font-weight: 800;
}

.result-table .note-row td {
  color: var(--el-text-color-regular);
  background: var(--el-fill-color-lighter);
  font-size: 13px;
}

/* ---------- 骨架屏 ---------- */

.preview-card__pending,
.preview-card__failed {
  display: flex;
  flex: 1;
  flex-direction: column;
  justify-content: center;
  padding: 48px 40px;
}

.skeleton__row {
  height: 14px;
  margin-bottom: 14px;
  background: var(--el-fill-color);
  border-radius: var(--el-border-radius-base);
  animation: skeleton-pulse 1.4s ease-in-out infinite;
}

.skeleton__row--head {
  width: 40%;
  height: 18px;
}

.skeleton__row--short {
  width: 62%;
}

.skeleton__row:nth-child(2n) {
  animation-delay: 0.35s;
}

.skeleton__row:nth-child(3n) {
  animation-delay: 0.7s;
}

@keyframes skeleton-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.45; }
}

.preview-card__pending-text {
  margin: 16px 0 0;
  color: var(--el-text-color-secondary);
  font-size: 13px;
  text-align: center;
}

/* ---------- 失败 / 取消空态 ---------- */

.preview-card__failed {
  align-items: center;
}

.empty-icon {
  display: grid;
  width: 56px;
  height: 56px;
  place-items: center;
  color: var(--el-text-color-secondary);
  background: var(--el-fill-color-light);
  border-radius: 50%;
}

.empty-icon svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: currentcolor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.preview-card__failed h3 {
  margin: 16px 0 0;
  color: var(--el-text-color-primary);
  font-size: 15px;
  font-weight: 600;
}

.preview-card__failed p {
  max-width: 420px;
  margin: 8px 0 0;
  color: var(--el-text-color-secondary);
  font-size: 13px;
  text-align: center;
}

.preview-card__failed .primary-button {
  margin-top: 16px;
}

/* ==================== Toast ==================== */

.toast {
  position: fixed;
  bottom: 28px;
  left: 50%;
  z-index: 300;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  color: var(--el-color-white);
  background: var(--el-text-color-primary);
  border-radius: var(--el-border-radius-base);
  font-size: 14px;
  transform: translateX(-50%);
  box-shadow: 0 4px 16px var(--el-border-color-dark);
}

.toast-icon svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentcolor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ==================== 响应式 ==================== */

@media (max-width: 900px) {
  .stage {
    padding: 16px;
  }

  .setup-card {
    padding: 20px 18px;
  }

  .work-grid {
    grid-template-columns: 1fr;
  }

  /* 窄屏：文件栏退化为设置卡下方的一块，限高内部滚动 */
  .stage--idle.has-files .idle-grid {
    grid-template-columns: 1fr;
  }

  .files-panel {
    position: static;
    max-height: 320px;
  }

  .batch-bar {
    flex-wrap: wrap;
  }

  .topbar__brand-sub {
    display: none;
  }

  .guide {
    grid-template-columns: 1fr;
  }
}