/* ============================================================
   BitHuB — Syllabus Stylesheet
   Version 4.0 | Clean · Flat · Corporate
   ============================================================ */

.syllabus0 {
  display: grid;
  padding: var(--space-6) var(--space-8);
  gap: var(--space-6);
  background: transparent;
  max-width: 1000px;
  margin: 0 auto;
  width: 100%;
}

.syllabus1 {
  width: 100%;
  display: grid;
  border: 1px solid var(--border);
  border-radius: 0;
  padding: 0;
  gap: 0;
  background: var(--bg-surface);
}

.syllabus11 {
  background: var(--bg-elevated);
  color: var(--text-primary);
  text-align: center;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  padding: var(--space-4) var(--space-5);
  font-weight: 600;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.syllabus12 {
  background: transparent;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  padding: var(--space-4) var(--space-5);
  font-size: 13px;
  line-height: 1.6;
}

.syllabus12:last-child {
  border-bottom: none;
}

.syllabus12 b {
  color: var(--text-primary);
  font-weight: 600;
}

/* Interactivity for clickable list items (labs, PDFs, etc.) */
.syllabus1 > a {
  text-decoration: none;
  color: inherit;
  display: block;
}

.syllabus12.main1 {
  position: relative;
  overflow: hidden;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background var(--t), color var(--t);
  text-align: center;
}

.syllabus12.main1::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0; right: auto;
  width: 2px;
  background: #444444;
  opacity: 0;
  transition: opacity var(--t);
}

.syllabus12.main1:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.syllabus12.main1:hover::before {
  opacity: 1;
}

.syllabus12.main1:active {
  background: var(--bg-active);
}

.syllabus12.main1:active::before {
  opacity: 1;
}

/* Touch devices support */
@media (hover: none) and (pointer: coarse) {
  .syllabus12.main1::before { opacity: 0.2; }
  .syllabus12.main1:active { background: var(--bg-hover); }
  .syllabus12.main1:active::before { opacity: 1; }
}

@media (max-width: 640px) {
  .syllabus12.main1::before {
    opacity: 0.2;
    background: #555555;
  }
  .syllabus12.main1:active { background: #161616; }
  .syllabus12.main1:active::before { opacity: 1; }
}

/* Fallback link styling within text descriptions */
.syllabus12 a {
  color: var(--accent-text);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t), border-bottom-color var(--t);
}

.syllabus12 a:hover {
  color: var(--text-primary);
  border-bottom-color: var(--border-accent);
}

@media (max-width: 768px) {
  .syllabus0 {
    padding: var(--space-4) var(--space-4);
    gap: var(--space-4);
  }
}