/* ============================================
   Module Page Styles
   Shared across all course module HTML pages
   ============================================ */

.module-page {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

/* ---------- Top Navigation ---------- */
.module-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
}

.module-nav-back {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: color var(--transition);
}

.module-nav-back:hover {
  color: var(--text);
}

.module-nav-controls {
  display: flex;
  align-items: center;
  gap: 16px;
}

.module-nav-label {
  font-size: 0.8rem;
  color: var(--text-tertiary);
}

.module-nav-next,
.module-nav-prev {
  color: var(--accent-light);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  transition: color var(--transition);
}

.module-nav-next:hover,
.module-nav-prev:hover {
  color: var(--text);
}

/* ---------- Module Header ---------- */
.module-header {
  text-align: center;
  margin-bottom: 40px;
}

.module-badge {
  display: inline-block;
  background: var(--accent);
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}

.module-header h1 {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 12px;
}

.module-meta {
  color: var(--text-tertiary);
  font-size: 0.9rem;
}

/* ---------- Audio Player ---------- */
.module-audio {
  margin-bottom: 48px;
}

.audio-placeholder {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 24px;
  text-align: center;
  color: var(--text-tertiary);
  font-size: 0.9rem;
}

.audio-icon {
  font-size: 1.8rem;
  display: block;
  margin-bottom: 8px;
}

/* When audio is ready, replace .audio-placeholder with:
   <audio controls src="audio/module-XX.mp3" style="width:100%"></audio>
*/

/* ---------- Module Content ---------- */
.module-content {
  line-height: 1.75;
  color: var(--text);
}

.module-content h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-top: 48px;
  margin-bottom: 16px;
  color: var(--text);
}

.module-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 36px;
  margin-bottom: 12px;
  color: var(--text);
}

.module-content p {
  margin-bottom: 16px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.module-content strong {
  color: var(--text);
  font-weight: 600;
}

.module-content ul,
.module-content ol {
  margin-bottom: 16px;
  padding-left: 24px;
}

.module-content li {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 8px;
  line-height: 1.6;
}

.module-content code {
  background: var(--surface-elevated);
  color: var(--accent-light);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88rem;
  font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

.module-content pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  overflow-x: auto;
  margin-bottom: 20px;
  margin-top: 12px;
}

.module-content pre code {
  background: none;
  padding: 0;
  color: var(--text);
  font-size: 0.85rem;
  line-height: 1.6;
}

.module-content a {
  color: var(--accent-light);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}

.module-content a:hover {
  border-bottom-color: var(--accent-light);
}

.module-content blockquote {
  border-left: 3px solid var(--accent);
  padding-left: 16px;
  margin: 20px 0;
  color: var(--text-secondary);
  font-style: italic;
}

.module-content table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.module-content th,
.module-content td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}

.module-content th {
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
}

.module-content td {
  color: var(--text-secondary);
}

/* Tip callouts */
.module-content .tip {
  background: var(--accent-glow);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-sm);
  padding: 16px 20px;
  margin: 20px 0;
  font-size: 0.9rem;
}

.module-content .tip strong {
  color: var(--accent-light);
}

/* ---------- Bottom Navigation ---------- */
.module-bottom-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding-top: 40px;
  margin-top: 48px;
  border-top: 1px solid var(--border);
}

.btn-bottom {
  padding: 12px 20px;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-xs);
  text-decoration: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-bottom-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-bottom-outline:hover {
  color: var(--text);
  border-color: var(--text-tertiary);
}

.btn-bottom-primary {
  background: var(--accent);
  color: white;
}

.btn-bottom-primary:hover {
  background: var(--accent-light);
}

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
  .module-header h1 {
    font-size: 1.5rem;
  }

  .module-nav {
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
  }

  .module-bottom-nav {
    flex-direction: column;
  }

  .btn-bottom {
    width: 100%;
    text-align: center;
  }

  .module-content pre {
    font-size: 0.8rem;
  }
}