/* Course viewer styling: shares the book grid but renders a single scrolling page. */

.course-wrap {
  gap: 12px;
}

.course-layout {
  grid-template-columns: minmax(0, 42%) minmax(0, 42%) minmax(140px, 15%);
}

.course-stage {
  padding: 24px 28px;
}

.course-page {
  flex: 1 1 auto;
  display: flex;
}

.course-content {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  overflow-y: auto;
  font-size: clamp(0.95rem, 0.92rem + 0.18vw, 1.05rem);
  line-height: 1.7;
  color: var(--book-ink);
}

.course-content h1,
.course-content h2,
.course-content h3,
.course-content h4,
.course-content h5,
.course-content h6 {
  margin: 0.35rem 0 0.6rem;
  color: var(--book-ink);
}

.course-content p {
  margin: 0.5rem 0 0.6rem;
}

.course-content ul,
.course-content ol {
  margin: 0.5rem 0 0.5rem 1.5rem;
  padding: 0;
}

.course-content img,
.course-content video,
.course-content iframe {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 14px;
  box-shadow: 0 16px 32px rgba(15, 23, 42, 0.18);
}

.course-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 14px 0 18px;
  font-size: 0.96rem;
  background: rgba(255, 255, 255, 0.98);
  border-radius: 12px;
  overflow: hidden;
}

.course-content th,
.course-content td {
  border: 1px solid rgba(148, 163, 184, 0.35);
  padding: 10px 12px;
  text-align: left;
  vertical-align: middle;
}

.course-content th {
  background: rgba(59, 130, 246, 0.12);
  color: var(--book-ink);
  font-weight: 700;
}

.course-content tbody tr:nth-child(even) {
  background: rgba(59, 130, 246, 0.05);
}

.course-content a {
  color: var(--book-accent);
  text-decoration: underline;
}

.course-list {
  max-height: var(--book-spread-height);
  overflow-y: auto;
  min-height: var(--book-spread-height);
}

@media (max-width: 1080px) {
  .course-layout {
    grid-template-columns: 1fr;
  }

  .course-stage {
    grid-column: auto;
  }

  .course-list {
    max-height: none;
    min-height: auto;
  }
}

.course-speakgame__launcher {
  --viewer-btn-size: 2.75rem;
}

.course-speakgame__modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  z-index: 1300;
}

.course-speakgame__modal[hidden] {
  display: none;
}

.course-speakgame__dialog {
  width: min(960px, 96%);
  max-height: 90vh;
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 18px 44px rgba(15, 23, 42, 0.18);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(99, 102, 241, 0.15);
}

.course-speakgame__dialog-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 16px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.08), rgba(99, 102, 241, 0.16));
  border-bottom: 1px solid rgba(99, 102, 241, 0.18);
}

.course-speakgame__title {
  font-weight: 700;
  color: #0f172a;
}

.course-speakgame__close {
  --viewer-btn-size: 2.4rem;
}

.course-speakgame__dialog-body {
  padding: 16px;
  overflow: auto;
  max-height: calc(90vh - 64px);
}

body.course-speakgame--open {
  overflow: hidden;
}

.course-gpt-debug {
  margin: 8px 0 0;
  font-size: 13px;
  color: #475569;
}

@media print {
  header,
  nav,
  footer {
    display: none !important;
  }
}