/* Course Player
   Self-contained styles — scoped under .hs-course-player to avoid leaking. */

.hs-course-player {
  --hs-course-text: #1a1a1a;
  --hs-course-muted: #6b7280;
  --hs-course-subtle: #9ca3af;
  --hs-course-border: #e5e7eb;
  --hs-course-border-strong: #d1d5db;
  --hs-course-bg: #ffffff;
  --hs-course-bg-soft: #f9fafb;
  --hs-course-step-bg: #ffffff;
  --hs-course-radius: 10px;
  --hs-course-radius-sm: 6px;

  color: var(--hs-course-text);
  background: var(--hs-course-bg);
  font-family: inherit;
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem;
  box-sizing: border-box;
  border-radius: var(--hs-course-radius);
}

/* ── Light-text variant (for dark backgrounds) ── */
.hs-course-player--light-text {
  --hs-course-text: #f3f4f6;
  --hs-course-muted: #cbd0d7;
  --hs-course-subtle: #8b929c;
  --hs-course-border: rgba(255, 255, 255, 0.14);
  --hs-course-border-strong: rgba(255, 255, 255, 0.28);
  --hs-course-bg-soft: rgba(255, 255, 255, 0.05);
  --hs-course-step-bg: rgba(255, 255, 255, 0.06);
}

.hs-course-player *,
.hs-course-player *::before,
.hs-course-player *::after {
  box-sizing: border-box;
}

/* ── Header ── */
.hs-course-player__header {
  margin-bottom: 1.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--hs-course-border);
}
.hs-course-player__title {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--hs-course-text);
}
.hs-course-player__subtitle {
  margin: 0;
  font-size: 0.95rem;
  color: var(--hs-course-muted);
  line-height: 1.5;
}

/* ── Part tabs ── */
.hs-course-player__parts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--hs-course-border);
}
.hs-course-player__part-tab {
  all: unset;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 0.65rem 1rem;
  border: 1px solid var(--hs-course-border);
  border-radius: var(--hs-course-radius-sm);
  cursor: pointer;
  text-align: left;
  background: var(--hs-course-step-bg);
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.1s ease;
  font-family: inherit;
  flex: 1 1 auto;
  min-width: 140px;
  max-width: 260px;
}
.hs-course-player__part-tab:hover {
  border-color: var(--hs-course-border-strong);
}
.hs-course-player__part-tab:focus-visible {
  outline: 2px solid var(--hs-course-accent, #1D9E75);
  outline-offset: 2px;
}
.hs-course-player__part-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--hs-course-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.hs-course-player__part-title {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--hs-course-text);
  line-height: 1.35;
}
.hs-course-player__part-tab.is-active {
  border-color: var(--hs-course-accent, #1D9E75);
  background: var(--hs-course-accent, #1D9E75);
}
.hs-course-player__part-tab.is-active .hs-course-player__part-label,
.hs-course-player__part-tab.is-active .hs-course-player__part-title {
  color: #fff;
}
.hs-course-player__part-tab.is-done:not(.is-active) .hs-course-player__part-label::before {
  content: "✓ ";
  color: var(--hs-course-accent, #1D9E75);
}

/* ── Stepper ── */
.hs-course-player__stepper {
  position: relative;
  margin-bottom: 2rem;
  padding: 0.5rem 0 1rem;
}
.hs-course-player__progress {
  position: absolute;
  top: 19px;
  left: 20px;
  right: 20px;
  height: 2px;
  background: var(--hs-course-border);
  z-index: 0;
  border-radius: 2px;
}
.hs-course-player__progress-fill {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--hs-course-accent, #1D9E75);
  border-radius: 2px;
  transition: width 0.35s ease;
}
.hs-course-player__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
  position: relative;
  z-index: 1;
}
.hs-course-player__step {
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  justify-content: center;
}
.hs-course-player__step-btn {
  all: unset;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  text-align: center;
  width: 100%;
  padding: 0 0.25rem;
  font-family: inherit;
}
.hs-course-player__step-btn:focus-visible {
  outline: 2px solid var(--hs-course-accent, #1D9E75);
  outline-offset: 4px;
  border-radius: var(--hs-course-radius-sm);
}
.hs-course-player__step-circle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--hs-course-step-bg);
  border: 2px solid var(--hs-course-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--hs-course-subtle);
  font-weight: 600;
  font-size: 0.875rem;
  flex-shrink: 0;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
  position: relative;
}
.hs-course-player__step-btn:hover .hs-course-player__step-circle {
  border-color: var(--hs-course-border-strong);
}
.hs-course-player__step-num {
  line-height: 1;
}
.hs-course-player__step-check {
  position: absolute;
  width: 18px;
  height: 18px;
  opacity: 0;
  transform: scale(0.6);
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.hs-course-player__step-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--hs-course-muted);
  line-height: 1.35;
  word-break: break-word;
  transition: color 0.2s ease;
}

/* Active state */
.hs-course-player__step.is-active .hs-course-player__step-circle {
  background: var(--hs-course-accent, #1D9E75);
  border-color: var(--hs-course-accent, #1D9E75);
  color: #fff;
  transform: scale(1.05);
}
.hs-course-player__step.is-active .hs-course-player__step-label {
  color: var(--hs-course-text);
  font-weight: 600;
}

/* Done state */
.hs-course-player__step.is-done .hs-course-player__step-circle {
  background: var(--hs-course-accent, #1D9E75);
  border-color: var(--hs-course-accent, #1D9E75);
  color: #fff;
}
.hs-course-player__step.is-done .hs-course-player__step-num {
  opacity: 0;
}
.hs-course-player__step.is-done .hs-course-player__step-check {
  opacity: 1;
  transform: scale(1);
}
.hs-course-player__step.is-done .hs-course-player__step-label {
  color: var(--hs-course-text);
}

/* ── Lesson panels ── */
.hs-course-player__lessons {
  position: relative;
}
.hs-course-player__lesson[hidden] {
  display: none;
}
.hs-course-player__lesson {
  animation: hsCourseFade 0.3s ease;
}
@keyframes hsCourseFade {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: translateY(0); }
}
.hs-course-player__lesson-title {
  margin: 0 0 1.25rem;
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.35;
}

/* Spacing between stacked content blocks (videos + text) within a lesson */
.hs-course-player__lesson > .hs-course-player__video + .hs-course-player__video,
.hs-course-player__lesson > .hs-course-player__text + .hs-course-player__video,
.hs-course-player__lesson > .hs-course-player__video + .hs-course-player__text,
.hs-course-player__lesson > .hs-course-player__text + .hs-course-player__text {
  margin-top: 1.5rem;
}

/* Video embed — force 16:9 responsive */
.hs-course-player__video {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  margin: 0 0 1.25rem;
  background: #000;
  border-radius: var(--hs-course-radius);
  overflow: hidden;
}
.hs-course-player__video-loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.85rem;
}
.hs-course-player__video iframe,
.hs-course-player__video video,
.hs-course-player__video embed,
.hs-course-player__video object {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
  border: 0;
}
/* Fallback for older browsers without aspect-ratio support */
@supports not (aspect-ratio: 16 / 9) {
  .hs-course-player__video { padding-top: 56.25%; height: 0; }
}

/* Lesson body text */
.hs-course-player__text {
  font-size: 1rem;
  line-height: 1.65;
  color: var(--hs-course-text);
}
.hs-course-player__text p { margin: 0 0 1em; }
.hs-course-player__text p:last-child { margin-bottom: 0; }
.hs-course-player__text a { color: var(--hs-course-accent, #1D9E75); }
.hs-course-player__text h4 { font-size: 1.05rem; font-weight: 600; margin: 1.5em 0 0.5em; }
.hs-course-player__text ul, .hs-course-player__text ol { padding-left: 1.25em; margin: 0 0 1em; }
.hs-course-player__text li { margin-bottom: 0.35em; }
.hs-course-player__text img { max-width: 100%; height: auto; border-radius: var(--hs-course-radius-sm); }

/* Completion panel */
.hs-course-player__lesson--complete {
  text-align: center;
  padding: 2rem 1rem;
  background: var(--hs-course-bg-soft);
  border-radius: var(--hs-course-radius);
}
.hs-course-player__complete-icon {
  color: var(--hs-course-accent, #1D9E75);
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem;
}
.hs-course-player__complete-icon svg {
  width: 100%;
  height: 100%;
}
.hs-course-player__lesson--complete .hs-course-player__text {
  max-width: 420px;
  margin: 0 auto 1.25rem;
  color: var(--hs-course-muted);
}
.hs-course-player__nav--restart {
  margin-top: 0.5rem;
}

/* ── Controls ── */
.hs-course-player__controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--hs-course-border);
}
.hs-course-player__position {
  font-size: 0.85rem;
  color: var(--hs-course-muted);
  flex: 0 0 auto;
}
.hs-course-player__nav {
  all: unset;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.6rem 1.1rem;
  background: var(--hs-course-accent, #1D9E75);
  color: #fff;
  border-radius: var(--hs-course-radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  font-family: inherit;
  transition: opacity 0.2s ease, transform 0.1s ease;
}
.hs-course-player__nav:hover { opacity: 0.9; }
.hs-course-player__nav:active { transform: translateY(1px); }
.hs-course-player__nav:focus-visible {
  outline: 2px solid var(--hs-course-accent, #1D9E75);
  outline-offset: 2px;
}
.hs-course-player__nav--prev {
  background: transparent;
  color: var(--hs-course-muted);
  border: 1px solid var(--hs-course-border);
}
.hs-course-player__nav--prev:hover { color: var(--hs-course-text); border-color: var(--hs-course-border-strong); opacity: 1; }
.hs-course-player__nav[disabled] {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}

/* Empty state */
.hs-course-player__empty {
  padding: 2rem;
  text-align: center;
  color: var(--hs-course-muted);
  background: var(--hs-course-bg-soft);
  border-radius: var(--hs-course-radius);
  font-size: 0.95rem;
}

/* ── Responsive ── */
@media (max-width: 640px) {
  .hs-course-player { padding: 1rem; }
  .hs-course-player__title { font-size: 1.25rem; }
  .hs-course-player__parts { gap: 0.35rem; }
  .hs-course-player__part-tab {
    min-width: 110px;
    padding: 0.5rem 0.75rem;
  }
  .hs-course-player__part-title { font-size: 0.82rem; }
  .hs-course-player__part-label { font-size: 0.65rem; }
  .hs-course-player__step-circle { width: 32px; height: 32px; font-size: 0.8rem; }
  .hs-course-player__progress { top: 15px; left: 16px; right: 16px; }
  .hs-course-player__step-check { width: 14px; height: 14px; }
  .hs-course-player__step-label {
    font-size: 0.7rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .hs-course-player__controls {
    flex-wrap: wrap;
    justify-content: center;
  }
  .hs-course-player__position { order: -1; width: 100%; text-align: center; }
  .hs-course-player__nav { padding: 0.55rem 0.9rem; font-size: 0.85rem; }
}