.custom-tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: #ffffff;
  display: flex;
  justify-content: space-around;
  align-items: center;
  border-top: 3px dashed #A0C4FF;
  padding-bottom: constant(safe-area-inset-bottom);
  padding-bottom: env(safe-area-inset-bottom);
  z-index: 1000;
}

/* 自定义组件样式隔离：两套主题配色在组件内自包含，不依赖全局 app.wxss */
.custom-tab-bar.theme-dark {
  background: #191919;
  border-top-color: #5b8cff;
}

.tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  position: relative;
}

.tab-icon-img {
  width: 28px;
  height: 28px;
  margin-bottom: 4px;
  transition: transform 0.2s;
  opacity: 0.6;
}

.tab-item.active .tab-icon-img {
  transform: scale(1.15);
  opacity: 1;
}

.tab-label {
  font-size: 20px;
  color: #b08d8d;
  transition: color 0.2s;
}

.custom-tab-bar.theme-dark .tab-label {
  color: #999999;
}

.tab-item.active .tab-label {
  color: #ff9a9e;
  font-weight: 600;
}

.custom-tab-bar.theme-dark .tab-item.active .tab-label {
  color: #ff7eb3;
}