/* Teaching page styles */

.section-intro {
  font-size: 16px;
  font-family: var(--font-serif);
  color: var(--text-dim);
  max-width: 720px;
  margin: 0 0 var(--s-6);
}

/* current course card */
.course-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 10px;
  padding: var(--s-6);
}
.course-meta { display: flex; align-items: center; gap: var(--s-3); margin-bottom: var(--s-3); }
.course-term {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
  letter-spacing: 0.04em;
}
.course-card h2 {
  font-size: clamp(28px, 3vw, 36px);
  margin: 0 0 var(--s-2);
  font-weight: 500;
  letter-spacing: -0.015em;
}
.course-sub {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text-faint);
  margin: 0 0 var(--s-4);
  letter-spacing: 0.02em;
}
.course-desc {
  font-size: 16px;
  line-height: 1.65;
  font-family: var(--font-serif);
  margin: 0 0 var(--s-5);
  max-width: 720px;
  color: var(--text-dim);
}
.course-desc strong { color: var(--text); font-weight: 500; }
.course-topics h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-faint);
  margin: 0 0 var(--s-3);
  font-weight: 500;
}
.course-topics ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px var(--s-5);
}
.course-topics li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  color: var(--text-dim);
}
.course-topics li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--font-mono);
}
@media (max-width: 700px) {
  .course-topics ul { grid-template-columns: 1fr; }
}

/* prototype cards */
.proto-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-4);
}
@media (max-width: 940px) { .proto-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) { .proto-grid { grid-template-columns: 1fr; } }

.proto-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s, border-color 0.15s, background 0.15s;
}
.proto-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.proto-card.placeholder {
  opacity: 0.85;
}
.proto-thumb {
  background: #0d1830;
  border-bottom: 1px solid var(--border);
}
.proto-thumb svg { display: block; width: 100%; height: auto; }

.proto-body { padding: var(--s-4) var(--s-5) var(--s-5); display: flex; flex-direction: column; gap: var(--s-2); flex: 1; }
.proto-tags { display: flex; gap: 4px; flex-wrap: wrap; }
.proto-card h3 {
  font-size: 17px;
  font-weight: 500;
  margin: 0;
  letter-spacing: -0.005em;
}
.proto-card p {
  font-size: 14px;
  line-height: 1.5;
  margin: 0;
  color: var(--text-dim);
}
.proto-link {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.02em;
  border-top: 1px solid var(--border);
  padding-top: var(--s-3);
  margin-top: var(--s-3);
}
.proto-card.placeholder .proto-link { color: var(--text-faint); }

/* theses */
.theses {
  display: flex;
  flex-direction: column;
}
.thesis-year {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--s-5);
  padding: var(--s-5) 0;
  border-top: 1px solid var(--border);
}
.thesis-year:first-child { border-top: none; }
.thesis-year-label {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.04em;
  font-weight: 500;
  padding-top: 4px;
}
.thesis-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--s-4);
}
.thesis-list li { padding: 0; }
.thesis-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-faint);
  letter-spacing: 0.02em;
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.thesis-title {
  font-family: var(--font-serif);
  font-size: 16px;
  line-height: 1.4;
  color: var(--text);
  margin-bottom: 4px;
}
.thesis-author {
  font-size: 13px;
  color: var(--text-dim);
  font-family: var(--font-sans);
}
.thesis-since { color: var(--text-faint); font-family: var(--font-mono); font-size: 12px; }

@media (max-width: 700px) {
  .thesis-year { grid-template-columns: 1fr; gap: var(--s-2); }
}

/* talks card */
.cta-card-teach {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: var(--s-5);
  border-left: 3px solid var(--accent);
}
.cta-card-teach h3 {
  font-size: 22px;
  margin: 0 0 var(--s-2);
  font-weight: 500;
}
.cta-card-teach p { margin: 0; max-width: 600px; }
@media (max-width: 720px) {
  .cta-card-teach { grid-template-columns: 1fr; }
}