/* Courses pages: catalogue (/Course) and course details (/CourseDetails/{id}).
   Tokens and shared primitives (.page-head, .meta-list, .surface, .empty-state, .tag) live in theme.css.
   Everything is scoped to .courses-page / .course-details-page so nothing leaks into other groups. */

/* ==========================================================================
   Catalogue
   ========================================================================== */
.courses-page .course-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr));
  gap: 1.5rem;
}
.courses-page .course-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
  border: 1px solid var(--h-line);
  border-radius: var(--h-radius-lg);
  background: var(--h-surface);
  transition: border-color .2s ease, box-shadow .2s ease;
}
.courses-page .course-card-media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-bottom: 1px solid var(--h-line);
  background: var(--h-surface-soft);
}
.courses-page .course-card-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.courses-page .course-card-body {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: .6rem;
  padding: 1.25rem;
}
.courses-page .course-card-title,
.courses-page .course-card-desc {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
}
.courses-page .course-card-title {
  margin: 0;
  color: var(--h-ink);
  font-size: 1.2rem;
  line-height: 1.6;
  -webkit-line-clamp: 2;
}
.courses-page .course-card-desc {
  margin: 0;
  color: var(--h-muted);
  font-size: .93rem;
  line-height: 1.8;
  -webkit-line-clamp: 3;
}
.courses-page .course-card-desc:empty { display: none; }
.courses-page .course-card-meta {
  gap: .35rem 1rem;
  margin-top: auto;
  padding-top: .85rem;
  border-top: 1px solid var(--h-line);
  font-size: .85rem;
}
.courses-page .course-card-meta strong { margin-inline-end: .2rem; }
.courses-page .course-card-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .5rem;
  margin-top: .4rem;
}
.courses-page .course-card-actions .btn {
  width: 100%;
  min-height: 44px;
  padding-inline: .5rem;
  white-space: nowrap;
}
.courses-page .course-card-unavailable {
  border-color: var(--h-line);
  background: var(--h-surface-soft);
  color: var(--h-faint);
  pointer-events: none;
}
@media (hover: hover) {
  .courses-page .course-card:hover { border-color: var(--h-line-strong); box-shadow: var(--h-shadow); }
  .courses-page .course-card:hover .course-card-image { transform: scale(1.03); }
}

/* ==========================================================================
   Course details: hero
   ========================================================================== */
.course-details-page .course-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 1.5rem clamp(1.5rem, 3vw, 3rem);
  align-items: center;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--h-line);
}
.course-details-page .course-hero-text { min-width: 0; }
.course-details-page .course-hero-text .page-lead:empty { display: none; }
.course-details-page .course-hero-meta { margin-top: 1.25rem; }
.course-details-page .course-hero-meta strong { margin-inline-end: .2rem; }
.course-details-page .course-dates {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .75rem;
  max-width: 30rem;
  margin: 1.25rem 0 1.5rem;
}
.course-details-page .course-date {
  padding: .7rem 1rem;
  border: 1px solid var(--h-line);
  border-radius: var(--h-radius);
  background: var(--h-surface);
}
.course-details-page .course-date dt { color: var(--h-muted); font-size: .82rem; font-weight: 500; }
.course-details-page .course-date dd { margin: 0; color: var(--h-ink); font-size: 1.02rem; font-weight: 700; }
.course-details-page .course-hero-cover {
  aspect-ratio: 16 / 10;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--h-line);
  border-radius: var(--h-radius-lg);
  background: var(--h-surface-soft);
}
.course-details-page .course-hero-cover img { display: block; width: 100%; height: 100%; object-fit: cover; }

@media (max-width: 991.98px) {
  .course-details-page .course-hero { grid-template-columns: minmax(0, 1fr); }
  .course-details-page .course-hero-cover { max-width: 720px; }
}

/* ==========================================================================
   Course details: tabs and panels
   ========================================================================== */
.course-details-page .course-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0 .25rem;
  margin-bottom: 1.75rem;
  border-bottom: 1px solid var(--h-line);
}
.course-details-page .course-tab {
  min-height: 44px;
  margin-bottom: -1px;
  padding: .55rem .9rem;
  border: 0;
  border-bottom: 2px solid transparent;
  background: none;
  color: var(--h-muted);
  font-size: .95rem;
  font-weight: 600;
  white-space: nowrap;
  transition: color .16s ease, border-color .16s ease, background-color .16s ease;
}
.course-details-page .course-tab:hover { color: var(--h-ink); }
.course-details-page .course-tab.active { border-bottom-color: var(--h-accent); color: var(--h-accent-strong); }

.course-details-page .course-tab-panel { min-height: 220px; }
.course-details-page .course-panel-title { margin: 0 0 1rem; font-size: 1.3rem; }
.course-details-page .course-prose,
.course-details-page .course-module-description {
  max-width: 70ch;
  margin: 0;
  color: var(--h-ink-soft);
  line-height: 1.95;
  white-space: pre-line;
}
.course-details-page .course-prose { font-size: 1.02rem; }
.course-details-page .course-empty { margin: 0; color: var(--h-muted); }

.course-details-page .course-languages { display: flex; flex-wrap: wrap; gap: .5rem; }
.course-details-page .course-languages .tag { gap: .35rem; padding: .35rem .75rem; font-size: .88rem; }

/* Teachers */
.course-details-page .course-teachers {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr));
  gap: 1rem;
}
.course-details-page .course-teacher {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem;
  border: 1px solid var(--h-line);
  border-radius: var(--h-radius);
  background: var(--h-surface-soft);
}
.course-details-page .course-teacher-image {
  flex: 0 0 64px;
  width: 64px;
  height: 64px;
  border: 1px solid var(--h-line);
  border-radius: 50%;
  background: var(--h-paper-deep);
  object-fit: cover;
}
.course-details-page .course-teacher-info { min-width: 0; }
.course-details-page .course-teacher-name { margin: 0 0 .2rem; font-size: 1.05rem; }
.course-details-page .course-teacher-brief { margin: 0 0 .35rem; color: var(--h-muted); font-size: .92rem; line-height: 1.75; }
.course-details-page .course-teacher-brief:empty,
.course-details-page .course-teacher-contact:has(bdi:empty) { display: none; }
.course-details-page .course-teacher-contact { display: block; color: var(--h-faint); font-size: .85rem; overflow-wrap: anywhere; }

/* Stages: vertical timeline with state markers and lesson rows */
.course-details-page .course-modules { margin: 0; padding: 0; list-style: none; }
.course-details-page .course-module-step {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 0 1.1rem;
  padding-bottom: 1.75rem;
}
.course-details-page .course-module-step:last-child { padding-bottom: 0; }
.course-details-page .course-module-step:not(:last-child)::before {
  content: "";
  position: absolute;
  top: 52px;
  bottom: 8px;
  inset-inline-start: 21px;
  width: 2px;
  border-radius: 2px;
  background: var(--h-line);
}
.course-details-page .course-module-marker {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--h-line-strong);
  border-radius: 50%;
  background: var(--h-surface);
  color: var(--h-ink-soft);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1;
}
.course-details-page .course-module-marker.active {
  border-color: var(--h-accent);
  background: var(--h-accent);
  color: #fff;
  box-shadow: 0 0 0 4px var(--h-accent-soft);
}
.course-details-page .course-module-marker.completed {
  border-color: transparent;
  background: var(--h-success-soft);
  color: var(--h-success);
  font-size: 1.2rem;
}
.course-details-page .course-module-content { min-width: 0; padding-top: .45rem; }
.course-details-page .course-module-title { margin: 0 0 .35rem; font-size: 1.1rem; }
.course-details-page .course-module-description:empty { display: none; }

.course-details-page .course-lessons {
  max-width: 70ch;
  margin: .9rem 0 0;
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--h-line);
  border-radius: var(--h-radius);
  background: var(--h-surface);
  list-style: none;
}
.course-details-page .course-lessons li + li { border-top: 1px solid var(--h-line); }
.course-details-page .course-lesson {
  display: flex;
  align-items: center;
  gap: .7rem;
  min-height: 48px;
  padding: .6rem 1rem;
  color: var(--h-ink);
  font-size: .95rem;
  font-weight: 500;
  text-decoration: none;
  transition: background-color .16s ease, color .16s ease;
}
.course-details-page .course-lesson > i:first-child { color: var(--h-accent); font-size: 1.1rem; }
.course-details-page .course-lesson-name { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.course-details-page .course-lesson-go { color: var(--h-faint); transition: transform .16s ease, color .16s ease; }
.course-details-page a.course-lesson:hover { background: var(--h-accent-tint); color: var(--h-accent-strong); }
.course-details-page a.course-lesson:hover .course-lesson-go { color: var(--h-accent); transform: translateX(-3px); }
.course-details-page .course-lesson.is-static { color: var(--h-muted); }
.course-details-page .course-lesson.is-static > i:first-child { color: var(--h-faint); }

/* ==========================================================================
   Phone
   ========================================================================== */
@media (max-width: 767px) {
  .courses-page .course-grid { gap: 1rem; }
  .courses-page .course-card-body { padding: 1rem; }
  .courses-page .course-card-title { font-size: 1.1rem; }

  .course-details-page .course-hero { gap: 1.25rem; margin-bottom: 1.25rem; padding-bottom: 1.5rem; }
  .course-details-page .course-dates { gap: .5rem; margin: 1rem 0 1.25rem; }
  .course-details-page .course-date { padding: .6rem .8rem; }
  .course-details-page .course-hero-cta { width: 100%; }

  /* Tabs wrap into rows; every row keeps its own hairline so nothing is hidden or scrolled. */
  .course-details-page .course-tabs { gap: .25rem; margin-bottom: 1.25rem; border-bottom: 0; }
  .course-details-page .course-tab {
    flex: 1 1 auto;
    margin-bottom: 0;
    padding: .5rem .75rem;
    border-bottom-color: var(--h-line);
    font-size: .9rem;
  }
  .course-details-page .course-tab.active { background: var(--h-accent-tint); }

  #main-content-container .course-details-page .course-prose,
  #main-content-container .course-details-page .course-module-description { line-height: 1.9; }
  .course-details-page .course-prose { font-size: 1rem; }

  .course-details-page .course-module-step { grid-template-columns: 36px minmax(0, 1fr); gap: 0 .85rem; padding-bottom: 1.4rem; }
  .course-details-page .course-module-step:not(:last-child)::before { top: 44px; inset-inline-start: 17px; }
  .course-details-page .course-module-marker { width: 36px; height: 36px; font-size: .92rem; }
  .course-details-page .course-module-content { padding-top: .25rem; }
  .course-details-page .course-module-title { font-size: 1.02rem; }
  .course-details-page .course-lesson { padding-inline: .85rem; }
}