/* Demo scene switcher — 2 top links, expandable sub-links per group */
.demo-scene-switch {
  position: fixed;
  z-index: 9999;
  top: var(--demo-chrome-top, max(20px, env(safe-area-inset-top, 0px) + 14px));
  left: var(--demo-chrome-left, max(16px, env(safe-area-inset-left, 0px) + 12px));
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  max-width: min(
    280px,
    calc(100vw - 32px - env(safe-area-inset-left, 0px) - env(safe-area-inset-right, 0px))
  );
  font-family: "TikTok Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 13px;
  font-weight: 400;
  line-height: 1.3;
  -webkit-font-smoothing: antialiased;
}

.demo-scene-switch__group {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 24px;
}

.demo-scene-switch__item {
  color: rgba(255, 255, 255, 0.4);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.15s ease;
  -webkit-tap-highlight-color: transparent;
}

.demo-scene-switch__item:hover {
  color: rgba(255, 255, 255, 0.65);
}

.demo-scene-switch__item.is-active {
  color: #ffffff;
  cursor: default;
  pointer-events: none;
}

.demo-scene-switch__sub {
  display: none;
  flex-direction: column;
  align-items: flex-start;
  gap: 24px;
  padding-left: 12px;
  border-left: 1px solid rgba(255, 255, 255, 0.14);
}

.demo-scene-switch__group.is-expanded .demo-scene-switch__sub {
  display: flex;
}

/* 单行链接（如 Auto Repin） */
.demo-scene-switch__sub-item {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  white-space: nowrap;
  font-size: 12px;
  line-height: 1.35;
  transition: color 0.15s ease;
  -webkit-tap-highlight-color: transparent;
}

.demo-scene-switch__sub-item:hover {
  color: rgba(255, 255, 255, 0.7);
}

.demo-scene-switch__sub-item.is-active {
  color: rgba(255, 255, 255, 0.92);
  cursor: default;
  pointer-events: none;
}

/* 方案对比：标题 + 说明两行结构 */
.demo-scene-switch__option {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

.demo-scene-switch__option-label {
  font-size: 12px;
  font-weight: 400;
  line-height: 1.25;
  color: rgba(255, 255, 255, 0.52);
  transition: color 0.15s ease;
}

.demo-scene-switch__option-desc {
  font-size: 11px;
  font-weight: 400;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.4);
  white-space: normal;
  max-width: 240px;
  transition: color 0.15s ease;
}

.demo-scene-switch__option:hover .demo-scene-switch__option-label {
  color: rgba(255, 255, 255, 0.78);
}

.demo-scene-switch__option:hover .demo-scene-switch__option-desc {
  color: rgba(255, 255, 255, 0.58);
}

.demo-scene-switch__option.is-active {
  cursor: default;
  pointer-events: none;
}

.demo-scene-switch__option.is-active .demo-scene-switch__option-label {
  color: #ffffff;
}

.demo-scene-switch__option.is-active .demo-scene-switch__option-desc {
  color: rgba(255, 255, 255, 0.68);
}

@media (max-width: 960px) {
  .demo-scene-switch {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 20px 28px;
    max-width: calc(100vw - 24px - env(safe-area-inset-left, 0px) - env(safe-area-inset-right, 0px));
  }
}

@media (max-width: 520px) {
  .demo-scene-switch {
    left: max(12px, env(safe-area-inset-left, 0px) + 8px);
    gap: 18px 24px;
    font-size: 12px;
  }

  .demo-scene-switch__item,
  .demo-scene-switch__sub-item,
  .demo-scene-switch__option {
    display: inline-flex;
    min-height: 32px;
    padding: 2px 0;
  }

  .demo-scene-switch__sub-item {
    font-size: 11px;
    min-height: 28px;
  }

  .demo-scene-switch__option-label {
    font-size: 11px;
  }

  .demo-scene-switch__option-desc {
    font-size: 10px;
    max-width: 200px;
  }
}

@media (max-height: 520px) and (orientation: landscape) {
  .demo-scene-switch {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 12px 20px;
    top: max(12px, env(safe-area-inset-top, 0px) + 8px);
  }
}

@media (hover: none) and (pointer: coarse) {
  .demo-scene-switch__item:not(.is-active),
  .demo-scene-switch__sub-item:not(.is-active),
  .demo-scene-switch__option:not(.is-active) {
    padding: 6px 2px;
    min-height: 36px;
  }
}