/* ============================================================
   teaching.css — styles specific to the teaching site,
   layered on top of the shared style.css.
   ============================================================ */

/* ---- landing hero ---- */
.hero.teaching { display: block; padding: 56px 0 28px; }
.hero.teaching h1 {
  font-family: "Newsreader", Georgia, serif; font-size: 44px; font-weight: 600;
  margin: 0 0 8px; letter-spacing: -0.01em;
}
.hero.teaching .lede { max-width: 60ch; }

/* ---- course cards (landing) ---- */
.course-cards { display: grid; gap: 16px; }
a.course-card {
  display: block; text-decoration: none; color: inherit;
  border: 1px solid var(--line); border-left: 3px solid var(--accent);
  border-radius: 10px; padding: 20px 22px; background: var(--bg);
  transition: box-shadow .15s ease, transform .15s ease;
}
a.course-card:hover {
  text-decoration: none; box-shadow: 0 4px 18px rgba(0,0,0,0.06);
  transform: translateY(-1px);
}
.course-card h3 {
  text-transform: none; letter-spacing: 0; color: var(--ink);
  font-family: "Inter", sans-serif; font-size: 19px; font-weight: 600; margin: 0 0 4px;
}
.course-card .meta { color: var(--muted); font-size: 14.5px; margin: 0 0 8px; }
.course-card .meta .term { color: var(--accent-dark); font-weight: 600; }
.course-card .blurb { font-size: 15px; margin: 0; color: #33383f; }
.course-card .go { color: var(--accent); font-weight: 500; font-size: 14.5px; margin: 10px 0 0; }

/* ---- course page ---- */
.course-hero { padding: 40px 0 8px; }
.course-hero h1 {
  font-family: "Newsreader", Georgia, serif; font-size: 38px; font-weight: 600;
  margin: 0 0 8px; letter-spacing: -0.01em;
}
.course-hero .meta-grid {
  display: flex; flex-wrap: wrap; gap: 8px 28px; margin: 12px 0 0;
  color: var(--muted); font-size: 14.5px;
}
.course-hero .meta-grid b { color: var(--ink); font-weight: 600; }

/* schedule table */
table.schedule { width: 100%; border-collapse: collapse; font-size: 15px; }
table.schedule th, table.schedule td {
  text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line);
  vertical-align: top;
}
table.schedule th {
  font-size: 12.5px; letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--muted); font-weight: 600;
}
table.schedule td.when { white-space: nowrap; color: var(--accent-dark); font-weight: 600; width: 90px; }

/* downloads list */
ul.downloads { list-style: none; margin: 0; padding: 0; }
ul.downloads li {
  display: flex; align-items: baseline; gap: 10px; padding: 8px 0;
  border-bottom: 1px solid var(--line); font-size: 15px;
}
ul.downloads li .kind {
  flex: 0 0 auto; font-size: 12px; font-weight: 600; color: var(--muted);
  text-transform: uppercase; letter-spacing: 0.03em; min-width: 54px;
}
.placeholder { color: var(--muted); font-size: 15px; font-style: italic; }

/* "coming soon" notice */
.notice {
  background: var(--bg-soft); border: 1px solid var(--line);
  border-left: 3px solid var(--accent); border-radius: 10px;
  padding: 16px 20px; margin: 8px 0 4px; font-size: 15px; color: var(--ink);
}
.notice strong { font-weight: 600; }
.soon { color: var(--muted); font-size: 15px; }
.course-ref { color: var(--muted); font-size: 14px; margin-top: 10px; }

/* sub-headings within a course section (e.g. A1, A2) */
.subh {
  font-family: "Inter", sans-serif; font-size: 16px; font-weight: 600;
  color: var(--ink); text-transform: none; letter-spacing: 0; margin: 20px 0 8px;
}

/* reference list (hanging indent) */
.reflist { list-style: none; margin: 6px 0 0; padding: 0; }
.reflist li {
  font-size: 14px; color: #33383f; line-height: 1.5;
  padding-left: 1.5em; text-indent: -1.5em; margin-bottom: 8px;
}

@media (max-width: 680px) {
  .hero.teaching h1, .course-hero h1 { font-size: 34px; }
  table.schedule td.when { width: auto; }
}

/* ---- interactive apps page ---- */
.app-embed {
  border: 1px solid var(--line); border-left: 3px solid var(--accent);
  border-radius: 10px; overflow: hidden; background: #fff; margin: 10px 0 14px;
}
.app-embed iframe { display: block; width: 100%; height: 760px; border: 0; }
.app-links { display: flex; gap: 12px; flex-wrap: wrap; margin: 0 0 4px; }
@media (max-width: 680px) { .app-embed iframe { height: 560px; } }