/* ==============================
   Single Audio Lesson
   ============================== */

.single-audio_lesson .tea-class-main {
  max-width: 760px;
}

.single-audio_lesson .tw-lesson-header {
  margin-bottom: 2rem;
}

.single-audio_lesson .tw-lesson-title {
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.single-audio_lesson .tw-lesson-meta {
  font-size: 0.95rem;
  color: #666;
}

.single-audio_lesson .tw-lesson-content {
  font-size: 1.05rem;
  line-height: 1.9;
}

.single-audio_lesson .tw-lesson-content p {
  margin-bottom: 1.4em;
}

.single-audio_lesson .tw-lesson-content h2 {
  margin-top: 2.4em;
  margin-bottom: 0.8em;
}

.single-audio_lesson .tw-lesson-content h3 {
  margin-top: 2em;
  margin-bottom: 0.6em;
}

.single-audio_lesson .tw-audio-nav {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid currentColor;
}

.single-audio_lesson .tw-audio-nav a {
  display: inline-block;
  padding: 0.7em 1em;
  border-radius: 0.5rem;
  text-decoration: none;
}

.single-audio_lesson .tw-audio-nav a:focus-visible,
.single-audio_lesson .tw-lesson-content a:focus-visible {
  outline: 3px solid currentColor;
  outline-offset: 3px;
}

/* 前後ナビ */
.tw-audio-lesson-nav {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid currentColor;
  display: grid;
  gap: 1rem;
}

.tw-audio-lesson-nav a {
  display: block;
  padding: 0.9em 1em;
  border-radius: 0.5rem;
  text-decoration: none;
}

.tw-audio-lesson-nav a:focus-visible {
  outline: 3px solid currentColor;
  outline-offset: 3px;
}

.tw-audio-lesson-nav span {
  font-weight: 700;
}

@media (min-width: 768px) {
  .tw-audio-lesson-nav {
    grid-template-columns: 1fr auto 1fr;
    align-items: stretch;
  }

  .tw-audio-lesson-nav-next {
    text-align: right;
  }

  .tw-audio-lesson-nav-series {
    text-align: center;
  }
}

/*SSML*/
.tw-ssml-preview {
  margin-top: 3rem;
  padding: 1rem;
  border: 1px solid currentColor;
  border-radius: 0.5rem;
}

.tw-ssml-preview pre {
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

.tw-ssml-preview code {
  font-size: 0.9rem;
}