/* ========================================================================
   IvyBridge Education · Course Detail Page styles
   Supplements pages.css — breadcrumb, detail grid, purchase card, syllabus
   ======================================================================== */

/* ── Breadcrumb ────────────────────────────────────────────────────────── */
.course-breadcrumb {
  padding: 22px 0 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}
.course-breadcrumb a { color: var(--muted); }
.course-breadcrumb a:hover { color: var(--ivy); }
.course-breadcrumb .bc-sep { margin: 0 10px; color: var(--gold); }
.course-breadcrumb .bc-current { color: var(--ink); }

/* ── Course switcher tabs (above grid) ─────────────────────────────────── */
.course-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--line);
  margin-bottom: 0;
}
.course-tab {
  padding: 12px 24px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 2px solid transparent;
  cursor: pointer;
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  transition: color .15s, border-color .15s;
}
.course-tab:hover { color: var(--ivy); }
.course-tab.is-active {
  color: var(--ivy);
  border-bottom-color: var(--ivy);
}

/* ── Detail grid ────────────────────────────────────────────────────────── */
.course-detail-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 64px;
  padding-top: 48px;
  padding-bottom: 96px;
  align-items: start;
}

/* ── Left column ────────────────────────────────────────────────────────── */
.course-detail-main .course-code {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
}
.course-detail-main h1 {
  margin-top: 14px;
  font-size: clamp(32px, 4vw, 56px);
}
.course-detail-main .course-lede {
  margin-top: 16px;
  font-size: 17px;
  color: var(--ink-2);
  line-height: 1.65;
  max-width: 560px;
}
.course-detail-main .course-lede em { color: var(--ivy); font-style: italic; }

/* tag row */
.course-tag-row {
  display: flex;
  gap: 8px;
  margin-top: 20px;
  flex-wrap: wrap;
}

/* ── Stats grid ─────────────────────────────────────────────────────────── */
.course-stats-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  margin-top: 36px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.course-stat {
  padding: 22px 0;
  border-right: 1px solid var(--line);
  text-align: center;
}
.course-stat:first-child { text-align: left; padding-left: 0; }
.course-stat:last-child { border-right: none; }
.course-stat-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}
.course-stat-value {
  font-family: var(--serif-display);
  font-size: 22px;
  color: var(--ivy);
  font-style: italic;
  margin-top: 6px;
  line-height: 1.1;
}

/* ── Teacher mini-card ──────────────────────────────────────────────────── */
.course-teacher-card {
  display: flex;
  gap: 20px;
  align-items: center;
  padding: 20px 22px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  margin-top: 32px;
}
.course-teacher-avatar {
  width: 68px;
  height: 68px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif-display);
  font-size: 26px;
  color: var(--paper);
  flex-shrink: 0;
  font-style: italic;
}
.course-teacher-avatar.ivy { background: var(--ivy); }
.course-teacher-avatar.gold { background: var(--gold); color: var(--ink); }
.course-teacher-info { flex: 1; }
.course-teacher-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}
.course-teacher-name {
  font-family: var(--serif-display);
  font-size: 22px;
  color: var(--ink);
  margin-top: 4px;
}
.course-teacher-meta {
  font-size: 13.5px;
  color: var(--muted);
  margin-top: 3px;
  line-height: 1.4;
}

/* ── Section header ─────────────────────────────────────────────────────── */
.course-sec-head { margin-bottom: 28px; }
.course-sec-num {
  font-family: var(--serif-display);
  font-style: italic;
  font-size: 56px;
  color: var(--line);
  line-height: 1;
  float: left;
  margin-right: 18px;
  margin-top: -6px;
}
.course-sec-eyebrow {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  padding-top: 6px;
}
.course-sec-title {
  font-family: var(--serif-display);
  font-size: 28px;
  color: var(--ink);
  margin-top: 6px;
}
.course-sec-clearfix::after { content: ""; display: table; clear: both; }

/* ── Syllabus ───────────────────────────────────────────────────────────── */
.course-syllabus { margin-top: 56px; }
.course-syllabus-table {
  border-top: 1px solid var(--line);
}
.course-syllabus-row {
  display: grid;
  grid-template-columns: 64px 1fr 130px 80px;
  gap: 20px;
  align-items: center;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.syl-wk {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--gold);
  text-transform: uppercase;
}
.syl-title {
  font-family: var(--serif-display);
  font-size: 18px;
  color: var(--ink);
}
.syl-sub {
  font-size: 12.5px;
  color: var(--muted);
  margin-top: 3px;
}
.syl-kind {
  font-family: var(--serif-display);
  font-style: italic;
  font-size: 13.5px;
  color: var(--ink-2);
}
.syl-mins {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-align: right;
}
.course-syllabus-more {
  text-align: center;
  margin-top: 22px;
}
.btn-text-link {
  background: none;
  border: none;
  padding: 0;
  font-family: var(--serif-display);
  font-style: italic;
  font-size: 16px;
  color: var(--ivy);
  cursor: pointer;
  letter-spacing: 0.01em;
}
.btn-text-link:hover { text-decoration: underline; }

/* ── What's included ────────────────────────────────────────────────────── */
.course-includes { margin-top: 72px; }
.course-includes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  margin-top: 32px;
}
.course-include-item {
  border-top: 2px solid var(--gold);
  padding-top: 14px;
}
.course-include-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
}
.course-include-text {
  font-family: var(--serif-display);
  font-size: 17px;
  color: var(--ink);
  margin-top: 8px;
  line-height: 1.45;
}

/* ── Outcomes banner ────────────────────────────────────────────────────── */
.course-outcomes {
  margin-top: 72px;
  padding: 44px 40px;
  background: var(--ivy);
  border-radius: 4px;
}
.course-outcomes .eyebrow { color: var(--gold-soft); }
.course-outcomes h3 {
  color: var(--paper);
  margin-top: 14px;
  font-size: clamp(22px, 2.5vw, 36px);
}
.course-outcomes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 32px;
}
.course-outcome-item {
  border-left: 1px solid rgba(168,124,52,0.35);
  padding-left: 20px;
}
.course-outcome-num {
  font-family: var(--serif-display);
  font-style: italic;
  font-size: 52px;
  color: var(--gold-soft);
  line-height: 1;
}
.course-outcome-label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: rgba(255,255,255,0.65);
  margin-top: 10px;
}
.course-outcomes-note {
  margin-top: 28px;
  padding-top: 18px;
  border-top: 1px solid rgba(168,124,52,0.3);
  font-family: var(--serif-display);
  font-style: italic;
  font-size: 14px;
  color: var(--cream);
  line-height: 1.55;
}

/* ── Right: sticky purchase card ────────────────────────────────────────── */
.course-purchase-wrap {
  position: sticky;
  top: 100px;
}
.course-purchase-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 28px;
}
.course-purchase-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.course-purchase-seats {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--gold);
}
.course-purchase-period-label {
  margin-top: 20px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}
.course-purchase-price {
  font-family: var(--serif-display);
  font-size: 52px;
  color: var(--ivy);
  font-style: italic;
  line-height: 1;
  margin-top: 4px;
}
.course-purchase-price-note {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-top: 8px;
}
.course-purchase-meta {
  margin-top: 22px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.course-purchase-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
}
.course-purchase-row .key { color: var(--muted); }
.course-purchase-row .val {
  font-family: var(--serif-display);
  color: var(--ink);
}
.course-purchase-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 22px;
}
.course-purchase-buttons .btn { width: 100%; text-align: center; }
.course-purchase-footer {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px dashed var(--line);
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--muted);
}
.course-purchase-footer .promo { color: var(--gold); }

/* ── Other courses list ─────────────────────────────────────────────────── */
.course-others { margin-top: 28px; }
.course-others-label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}
.course-other-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
  margin-bottom: 8px;
  transition: border-color .15s, background .15s;
  text-decoration: none;
  color: inherit;
}
.course-other-item:hover {
  border-color: var(--ivy);
  background: var(--paper-2);
}
.course-other-code {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--gold);
}
.course-other-title {
  font-family: var(--serif-display);
  font-size: 15px;
  color: var(--ink);
  margin-top: 2px;
}
.course-other-arrow {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ivy);
}

/* ── Course block visibility (hash-driven) ──────────────────────────────── */
.course-block { display: none; }
.course-block.is-visible { display: block; }

/* ── Mobile ─────────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .course-detail-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-top: 32px;
    padding-bottom: 64px;
  }
  .course-purchase-wrap { position: static; }
  .course-stats-grid { grid-template-columns: repeat(3, 1fr); }
  .course-outcomes-grid { grid-template-columns: 1fr 1fr; }
  .course-syllabus-row { grid-template-columns: 54px 1fr 70px; }
  .syl-kind { display: none; }
  .course-tabs { overflow-x: auto; white-space: nowrap; }
}
@media (max-width: 600px) {
  .course-stats-grid { grid-template-columns: repeat(2, 1fr); }
  .course-includes-grid { grid-template-columns: 1fr; }
  .course-outcomes-grid { grid-template-columns: 1fr; }
}