/* progress-b：节点流程条。生产宏 templates/partials/ui_stepper.html 的 ui_stepper。
   实例：课题详情（学生端与教师端审批共用同一模板）、毕业论文 v2 列表与详情（详情双端共用，列表含空态装饰预览）。 */
.ui-stepper-scroll {
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
}

.ui-stepper {
  --ui-stepper-step-min: 92px;
  position: relative;
  display: grid;
  grid-template-columns: repeat(var(--ui-stepper-count, 8), minmax(var(--ui-stepper-step-min), 1fr));
  align-items: start;
  min-width: calc(var(--ui-stepper-count, 8) * var(--ui-stepper-step-min));
  margin-top: 16px;
  padding: 12px 4px 4px;
}

.ui-stepper-rail {
  display: block;
  position: absolute;
  left: calc(var(--ui-stepper-step-min) / 2 + 4px);
  right: calc(var(--ui-stepper-step-min) / 2 + 4px);
  top: 25px;
  height: 3px;
  border-radius: var(--ui-radius-pill);
  background: var(--ui-color-border-strong);
  overflow: hidden;
  z-index: 0;
}

.ui-stepper-rail-done,
.ui-stepper-rail-active {
  position: absolute;
  top: 0;
  height: 100%;
  border-radius: var(--ui-radius-pill);
}

.ui-stepper-rail-done {
  left: 0;
  background: var(--ui-color-success-600);
}

.ui-stepper-rail-active {
  background: linear-gradient(90deg, var(--ui-color-primary-300), var(--ui-color-primary-600));
}

.ui-stepper-rail-active.is-review {
  background: repeating-linear-gradient(90deg, var(--ui-color-warning-600) 0 12px, var(--ui-color-warning-50) 12px 22px);
}

.ui-stepper-step {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  min-height: 52px;
  padding: 0 6px;
  text-align: center;
  color: inherit;
  text-decoration: none;
}

.ui-stepper-step[href]:focus-visible {
  outline: 2px solid var(--ui-color-primary-600);
  outline-offset: 3px;
  border-radius: var(--ui-radius-control);
}

.ui-stepper-index {
  position: relative;
  z-index: 2;
  display: flex;
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
  box-sizing: border-box;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: var(--ui-radius-pill);
  background: var(--ui-color-gray-100);
  box-shadow: 0 0 0 5px var(--ui-color-surface);
  color: var(--ui-color-text-muted);
  font-size: var(--ui-font-size-xs);
  font-weight: 700;
}

.ui-stepper-text {
  position: relative;
  z-index: 2;
  display: block;
  width: 100%;
  min-width: 0;
}

.ui-stepper-text b,
.ui-stepper-text em {
  display: block;
  max-width: 100%;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

.ui-stepper-text b {
  color: var(--ui-color-text);
  font-size: var(--ui-font-size-xs);
  line-height: 1.25;
  font-weight: 600;
}

.ui-stepper-text em {
  margin-top: 3px;
  color: var(--ui-color-text-muted);
  font-size: 11px;
  line-height: 1.2;
  font-style: normal;
}

.ui-stepper-step.is-waiting .ui-stepper-index {
  border-style: dashed;
  border-color: var(--ui-color-border-strong);
  background: var(--ui-color-surface);
  color: var(--ui-color-text-disabled);
}

.ui-stepper-step.is-active .ui-stepper-index {
  background: var(--ui-color-primary-100);
  color: var(--ui-color-primary-600);
}

.ui-stepper-step.is-done .ui-stepper-index {
  background: var(--ui-color-success-600);
  border-color: var(--ui-color-success-600);
  color: var(--ui-color-surface);
}

.ui-stepper-step.is-current .ui-stepper-index {
  border-color: var(--ui-color-primary-600);
  background: var(--ui-color-primary-600);
  color: var(--ui-color-surface);
  box-shadow: 0 0 0 5px var(--ui-color-surface), 0 5px 14px rgba(23, 105, 224, 0.22);
}

.ui-stepper-step.is-current .ui-stepper-text b,
.ui-stepper-step.is-current .ui-stepper-text em {
  color: var(--ui-color-primary-600);
  font-weight: 700;
}

.ui-stepper-step.is-reviewing .ui-stepper-index {
  border-color: var(--ui-color-warning-600);
  background: var(--ui-color-warning-600);
  color: var(--ui-color-surface);
  box-shadow: 0 0 0 5px var(--ui-color-surface), 0 5px 14px rgba(180, 83, 9, 0.22);
}

.ui-stepper-step.is-reviewing .ui-stepper-text b,
.ui-stepper-step.is-reviewing .ui-stepper-text em {
  color: var(--ui-color-warning-600);
  font-weight: 700;
}

.ui-stepper-step.is-rejected .ui-stepper-index {
  border-color: var(--ui-color-danger-600);
  background: var(--ui-color-danger-600);
  color: var(--ui-color-surface);
  box-shadow: 0 0 0 5px var(--ui-color-surface), 0 5px 14px rgba(185, 28, 28, 0.2);
}

.ui-stepper-step.is-rejected .ui-stepper-text b,
.ui-stepper-step.is-rejected .ui-stepper-text em {
  color: var(--ui-color-danger-600);
  font-weight: 700;
}