/* Shared controls for standard Huipeixue lesson pages.
   Pages opt in with data-hpx-page and set --hpx-accent when needed. */
[data-hpx-page] .tabs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 18px;
}

[data-hpx-page] .tab-btn {
  border: none;
  border-radius: 20px;
  background: rgba(255, 255, 255, .65);
  color: #666;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .08);
  font-family: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: transform .2s, background .2s, color .2s, box-shadow .2s;
}

[data-hpx-page] .tab-btn.on {
  background: var(--hpx-accent, #6a1b9a);
  color: #fff;
  box-shadow: 0 4px 14px color-mix(in srgb, var(--hpx-accent, #6a1b9a) 35%, transparent);
}

[data-hpx-page] .speak-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-bottom: 14px;
}

[data-hpx-page] .speak-toggle {
  padding: 7px 18px;
  border: 2px solid #ccc;
  border-radius: 20px;
  background: #fff;
  font-family: inherit;
  font-size: .9rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform .2s, background .2s, color .2s;
}

[data-hpx-page] .speak-toggle.on {
  background: var(--hpx-accent, #6a1b9a);
  color: #fff;
}

[data-hpx-page] .back-link {
  display: block;
  text-align: center;
  margin-top: 20px;
  color: var(--hpx-accent, #6a1b9a);
  text-decoration: none;
  font-size: .9rem;
}

[data-hpx-page] .back-link:hover { text-decoration: underline; }

[data-hpx-page] button:focus-visible,
[data-hpx-page] input:focus-visible,
[data-hpx-page] select:focus-visible,
[data-hpx-page] a:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--hpx-accent, #6a1b9a) 55%, white);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  [data-hpx-page] *,
  [data-hpx-page] *::before,
  [data-hpx-page] *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}