/* ═══════════════════════════════════════════════
   TEACHING PAGE STYLES  (teaching.html)
═══════════════════════════════════════════════ */

/* ── Course list ── */
.course-list { display: flex; flex-direction: column; }

.course-item {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 2.5rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}
.course-item:first-child { border-top: 1px solid var(--border); }

.course-meta {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding-top: 0.2rem;
}

.course-code {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: 0.04em;
}

.course-term {
  font-size: 0.7rem;
  color: var(--ink-muted);
  letter-spacing: 0.04em;
}

.course-name {
  font-family: 'DM Serif Display', serif;
  font-size: 1.2rem;
  font-weight: 400;
  margin-bottom: 0.3rem;
}

.course-level {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.course-desc {
  font-size: 0.85rem;
  color: var(--ink-muted);
  line-height: 1.75;
  margin-bottom: 0.75rem;
}

.course-tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.tag {
  font-size: 0.68rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 1px;
  color: var(--ink-muted);
}

/* ── PhD students ── */
.phd-list { display: flex; flex-direction: column; }

.phd-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--border);
  align-items: center;
}
.phd-item:first-child { border-top: 1px solid var(--border); }

.phd-name {
  font-size: 0.92rem;
  font-weight: 500;
  margin-bottom: 0.2rem;
}

.phd-topic {
  font-size: 0.82rem;
  color: var(--ink-muted);
  font-style: italic;
  margin-bottom: 0.2rem;
}

.phd-year { font-size: 0.75rem; color: var(--ink-muted); }

.phd-status {
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.65rem;
  border-radius: 1px;
  white-space: nowrap;
}
.phd-status.current  { background: #C8A96E22; color: var(--accent); border: 1px solid #C8A96E44; }
.phd-status.graduated { background: #E2DED6; color: var(--ink-muted); border: 1px solid var(--border); }

/* ── Office hours callout ── */
.office-hours {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 1.75rem 2rem;
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  margin-top: 3rem;
}

.oh-icon { color: var(--accent); flex-shrink: 0; margin-top: 2px; }

.oh-title {
  font-weight: 500;
  font-size: 0.9rem;
  margin-bottom: 0.3rem;
}

.oh-desc {
  font-size: 0.83rem;
  color: var(--ink-muted);
  line-height: 1.65;
}

/* Responsive */
@media (max-width: 900px) {
  .course-item { grid-template-columns: 1fr; gap: 0.4rem; }
  .phd-item { grid-template-columns: 1fr; gap: 0.5rem; }
}



/* ---------- IN-PAGE DOCUMENT LINKS (schedule table) ---------- */
.doc-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
  padding: 0.3rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  transition: all 0.2s;
  white-space: nowrap;
}
.doc-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: #C8A96E14;
}

/* ---------- DOCUMENT OVERLAY (opens PDFs / local pages in-place) ---------- */
.doc-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: var(--white);
  z-index: 150; /* below #sidebar (200) and nav (100 while sticky is irrelevant since overlay sits below it) */
  flex-direction: column;
}
.doc-overlay.active { display: flex; }

.doc-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.5rem;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.doc-title {
  font-family: 'DM Serif Display', serif;
  font-size: 0.95rem;
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.doc-toolbar-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

.doc-toolbar-actions a,
.doc-toolbar-actions button {
  font-family: inherit;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-muted);
  background: none;
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
}

.doc-toolbar-actions a:hover,
.doc-toolbar-actions button:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.doc-frame {
  flex: 1;
  width: 100%;
  border: none;
  background: var(--white);
}