.learning-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 0;
  min-height: calc(100vh - var(--nav-height));
  background: #111;
}

.learning-layout--no-cats {
  margin-top: 0;
}

.page-content--learning {
  padding-top: var(--nav-height);
}

.page-content--learning.page-content--with-cats {
  padding-top: var(--nav-height);
}

.page-content--learning + .academy-footer,
.learning-page ~ .academy-footer {
  display: none;
}

body.learning-mode .category-nav,
body.learning-mode .academy-footer,
body.learning-mode .scroll-to-top-btn {
  display: none !important;
}

body.learning-mode .page-content,
body.learning-mode .page-content--with-cats {
  padding-top: var(--nav-height);
}

body.learning-mode .learning-layout {
  min-height: calc(100vh - var(--nav-height));
}

.learning-main {
  background: #1c1d1f;
  color: #fff;
  padding: 1.25rem 1.5rem 2rem;
  min-width: 0;
}

.learning-main a {
  color: #f3f3f3;
}

.learning-main a:hover {
  color: var(--brand);
}

.learning-main__back {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 0.85rem;
  text-decoration: none;
}

.learning-main__title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  color: #fff;
  margin: 0 0 0.25rem;
}

.learning-main__module {
  color: rgba(255, 255, 255, 0.55);
  margin: 0 0 1rem;
  font-size: 0.92rem;
}

.learning-content {
  color: rgba(255, 255, 255, 0.85);
  white-space: pre-wrap;
  margin: 1.25rem 0;
  line-height: 1.6;
}

.learning-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.learning-actions .btn {
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}

.learning-actions .btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.learning-sidebar {
  background: var(--bg);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  max-height: calc(100vh - var(--nav-height));
  position: sticky;
  top: var(--nav-height);
}

.learning-sidebar__header {
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 2;
}

.learning-sidebar__header h2 {
  font-size: 0.95rem;
  font-weight: 800;
  margin: 0;
}

.learning-sidebar__course {
  font-size: 0.82rem;
  color: var(--muted);
  margin: 0.25rem 0 0;
}

.learning-sidebar__progress {
  margin-top: 0.75rem;
}

.learning-sidebar__progress-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

.learning-sidebar__progress-meta strong {
  color: var(--brand);
  font-size: 0.9rem;
}

.learning-sidebar__progress-track {
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  overflow: hidden;
}

.learning-sidebar__progress-fill {
  height: 100%;
  border-radius: inherit;
  background: var(--brand);
  transition: width 0.45s ease;
}

.learning-sidebar__cert-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 0.75rem;
  padding: 0.55rem 0.75rem;
  border-radius: 8px;
  background: var(--brand);
  color: #111 !important;
  font-size: 0.82rem;
  font-weight: 800;
  text-decoration: none;
  text-align: center;
  transition: filter var(--transition), transform var(--transition);
}

.learning-sidebar__cert-btn:hover {
  filter: brightness(1.05);
  color: #111 !important;
}

.learning-sidebar__cert-btn[hidden] {
  display: none !important;
}

.learning-module {
  border-bottom: 1px solid var(--border);
}

.learning-module__title {
  padding: 0.75rem 1.1rem;
  font-size: 0.85rem;
  font-weight: 800;
  background: var(--bg-subtle);
  margin: 0;
}

.learning-lesson-link {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  padding: 0.7rem 1.1rem;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.88rem;
  border-left: 3px solid transparent;
  transition: background var(--transition), color var(--transition);
}

.learning-lesson-link:hover {
  background: var(--bg-subtle);
  color: var(--text);
}

.learning-lesson-link.is-pending {
  color: var(--muted);
}

.learning-lesson-link.is-pending .learning-lesson-link__icon {
  color: #b0b5ba;
}

.learning-lesson-link.is-complete {
  color: var(--brand);
  font-weight: 600;
}

.learning-lesson-link.is-complete .learning-lesson-link__icon {
  color: var(--brand);
}

.learning-lesson-link.is-current {
  background: var(--brand-soft);
  border-left-color: var(--brand);
  font-weight: 700;
}

.learning-lesson-link.is-current.is-pending {
  color: var(--text);
}

.learning-lesson-link.is-current.is-complete {
  color: var(--brand);
}

.learning-lesson-link__icon {
  color: #b0b5ba;
  margin-top: 0.1rem;
  font-size: 0.75rem;
}

.learning-sidebar-toggle {
  display: none;
}

/* Player overrides — brand orange, no neon */
.adev-player {
  position: relative;
  width: 100%;
  /* Caja 16:9 siempre visible (también mientras carga, sin frame de video) */
  aspect-ratio: 16 / 9;
  min-height: min(56vw, 420px);
  max-height: 70vh;
  background: #000;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  overflow: hidden;
  user-select: none;
}

.adev-player video {
  display: block;
  width: 100%;
  height: 100%;
  max-height: none;
  object-fit: contain;
  background: #000;
  -webkit-user-drag: none;
  user-select: none;
}

.adev-player:fullscreen,
.adev-player:-webkit-full-screen {
  width: 100vw;
  height: 100vh;
  max-height: none;
  border: none;
  background: #000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.adev-player:fullscreen video,
.adev-player:-webkit-full-screen video {
  width: 100%;
  height: 100%;
  max-height: none;
  object-fit: contain;
}

.adev-player__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.25);
  cursor: pointer;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

.adev-player:not(.is-playing) .adev-player__overlay {
  pointer-events: auto;
}

.adev-player.is-playing .adev-player__overlay {
  opacity: 0;
}

.adev-player__big-play {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: none;
  background: var(--brand);
  color: #fff;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow-md);
  pointer-events: none;
}

.adev-player__big-play svg {
  width: 28px;
  height: 28px;
  margin-left: 3px;
}

.adev-player__controls {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 0.65rem 0.85rem 0.75rem;
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.88) 40%);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  font-family: var(--font-body);
}

.adev-player.is-paused .adev-player__controls,
.adev-player.is-hover .adev-player__controls,
.adev-player.is-seeking .adev-player__controls {
  opacity: 1;
  transform: translateY(0);
}

.adev-player__progress {
  position: relative;
  height: 6px;
  margin-bottom: 0.65rem;
  background: rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  cursor: pointer;
}

.adev-player__progress-buffered {
  position: absolute;
  inset: 0 auto 0 0;
  background: rgba(255, 255, 255, 0.28);
  border-radius: inherit;
  width: 0%;
  pointer-events: none;
}

.adev-player__progress-played {
  position: absolute;
  inset: 0 auto 0 0;
  background: var(--brand);
  border-radius: inherit;
  width: 0%;
  pointer-events: none;
}

.adev-player__progress-knob {
  position: absolute;
  top: 50%;
  left: 0%;
  width: 12px;
  height: 12px;
  margin-left: -6px;
  margin-top: -6px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--brand);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s ease;
}

.adev-player__progress:hover .adev-player__progress-knob,
.adev-player.is-seeking .adev-player__progress-knob {
  opacity: 1;
}

.adev-player__row {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.adev-player__spacer {
  flex: 1;
  min-width: 0.5rem;
}

.adev-player__btn {
  appearance: none;
  border: 1px solid rgba(255, 255, 255, 0.22);
  background: rgba(0, 0, 0, 0.35);
  color: #fff;
  width: 36px;
  height: 36px;
  border-radius: 6px;
  display: inline-grid;
  place-items: center;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.adev-player__btn:hover {
  color: #fff;
  border-color: var(--brand);
  background: rgba(255, 107, 53, 0.25);
}

.adev-player__btn svg {
  width: 16px;
  height: 16px;
  display: block;
}

.adev-player__time {
  font-variant-numeric: tabular-nums;
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.78);
  min-width: 6.5rem;
}

.adev-player__time b {
  color: #fff;
  font-weight: 600;
}

.adev-player__volume {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.adev-player__volume input[type="range"] {
  width: 72px;
  height: 4px;
  accent-color: var(--brand);
  cursor: pointer;
}

.adev-player.is-loading::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 56px;
  height: 56px;
  margin: -28px 0 0 -28px;
  border: 3px solid rgba(255, 255, 255, 0.2);
  border-top-color: var(--brand);
  border-radius: 50%;
  animation: adevSpin 0.7s linear infinite;
  pointer-events: none;
  z-index: 5;
}

.adev-player__end {
  position: absolute;
  inset: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  background: rgba(0, 0, 0, 0.72);
  backdrop-filter: blur(6px);
}

.adev-player__end[hidden] {
  display: none !important;
}

.adev-player__end-card {
  position: relative;
  width: min(100%, 420px);
  text-align: center;
  color: #fff;
  padding: 1.5rem 1.25rem;
  border-radius: var(--radius);
  background: rgba(20, 20, 20, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.12);
  overflow: hidden;
}

.adev-player__end-card[hidden] {
  display: none !important;
}

.adev-player__end-label {
  margin: 0 0 0.35rem;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--brand);
  font-weight: 700;
}

.adev-player__end-title {
  margin: 0 0 0.75rem;
  font-size: 1.35rem;
  font-weight: 800;
  line-height: 1.25;
}

.adev-player__end-count {
  margin: 0 0 1.1rem;
  color: rgba(255, 255, 255, 0.8);
  font-size: 1rem;
}

.adev-player__end-count strong {
  display: inline-block;
  min-width: 1.25rem;
  color: var(--brand);
  font-size: 1.45rem;
}

.adev-player__end-sub {
  margin: 0 0 0.5rem;
  color: rgba(255, 255, 255, 0.75);
}

.adev-player__end-pct {
  margin: 0 0 1.1rem;
  color: rgba(255, 255, 255, 0.85);
}

.adev-player__end-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
}

.adev-player__end-card--congrats {
  animation: adevCongratsIn 0.55s ease both;
}

.adev-player__congrats-burst {
  position: absolute;
  inset: -40%;
  background:
    radial-gradient(circle at 20% 30%, rgba(255, 140, 0, 0.35), transparent 40%),
    radial-gradient(circle at 80% 20%, rgba(255, 200, 80, 0.28), transparent 42%),
    radial-gradient(circle at 50% 80%, rgba(255, 120, 40, 0.22), transparent 45%);
  animation: adevBurst 2.4s ease-in-out infinite;
  pointer-events: none;
}

@keyframes adevCongratsIn {
  from { opacity: 0; transform: translateY(12px) scale(0.96); }
  to { opacity: 1; transform: none; }
}

@keyframes adevBurst {
  0%, 100% { opacity: 0.55; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.06); }
}

.adev-player__pending-list {
  list-style: none;
  margin: 0 0 1.1rem;
  padding: 0;
  text-align: left;
  max-height: 9rem;
  overflow: auto;
}

.adev-player__pending-list li {
  margin: 0;
}

.adev-player__pending-list a {
  display: block;
  padding: 0.45rem 0.6rem;
  border-radius: 6px;
  color: #fff;
  text-decoration: none;
  font-size: 0.9rem;
  background: rgba(255, 255, 255, 0.06);
  margin-bottom: 0.35rem;
}

.adev-player__pending-list a:hover {
  background: rgba(255, 140, 0, 0.2);
  color: var(--brand);
}

@keyframes adevSpin {
  to { transform: rotate(360deg); }
}

.adev-player__shield {
  position: absolute;
  inset: 0;
  z-index: 40;
  background: #000;
  display: none;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1.5rem;
  pointer-events: all;
}

.adev-player.is-shielded .adev-player__shield {
  display: flex;
}

.adev-player.is-shielded video {
  visibility: hidden;
  opacity: 0;
}

.adev-player__shield p {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.95rem;
  margin: 0;
  max-width: 22rem;
}

.player-placeholder {
  padding: 3rem 1.5rem;
  text-align: center;
  color: rgba(255, 255, 255, 0.6);
  background: #000;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
}

@media (max-width: 991.98px) {
  .learning-layout {
    grid-template-columns: 1fr;
  }

  .learning-sidebar {
    position: fixed;
    top: var(--nav-height);
    right: 0;
    bottom: 0;
    width: min(340px, 92vw);
    max-height: none;
    z-index: 1040;
    transform: translateX(105%);
    transition: transform 0.25s ease;
    box-shadow: var(--shadow-lg);
  }

  .learning-sidebar.is-open {
    transform: none;
  }

  .learning-sidebar-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-bottom: 0.85rem;
    padding: 0.45rem 0.85rem;
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: var(--radius);
    background: transparent;
    color: #fff;
    font-weight: 600;
    font-size: 0.88rem;
    cursor: pointer;
  }

  .learning-sidebar-backdrop {
    display: none;
    position: fixed;
    inset: var(--nav-height) 0 0 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 1035;
  }

  .learning-sidebar-backdrop.is-open {
    display: block;
  }
}

@media (max-width: 576px) {
  .adev-player__volume input[type="range"] { width: 48px; }
  .adev-player__time { min-width: auto; }
  .adev-player__big-play { width: 64px; height: 64px; }
  .learning-main { padding: 1rem; }
}

/* Lesson notes */
.lesson-notes {
  margin-top: 1.25rem;
  padding: 1rem 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.lesson-notes__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.lesson-notes__title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 800;
  color: #fff;
}

.lesson-notes__header .btn {
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}

.lesson-notes__header .btn:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.lesson-notes__composer {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 0.85rem;
  margin-bottom: 0.85rem;
}

.lesson-notes__composer-meta {
  margin: 0 0 0.55rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.65);
}

.lesson-notes__composer-meta strong {
  color: var(--brand);
}

.lesson-notes__textarea {
  width: 100%;
  resize: vertical;
  min-height: 72px;
  background: #111;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  color: #fff;
  padding: 0.65rem 0.75rem;
  font-size: 0.92rem;
  line-height: 1.45;
}

.lesson-notes__textarea:focus {
  outline: none;
  border-color: var(--brand);
}

.lesson-notes__composer-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.65rem;
}

.lesson-notes__composer-actions .btn {
  border-color: rgba(255, 255, 255, 0.35);
  color: #fff;
}

.lesson-notes__error {
  margin: 0.55rem 0 0;
  color: #f0a5a5;
  font-size: 0.85rem;
}

.lesson-notes__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.lesson-notes__empty {
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.88rem;
  padding: 0.35rem 0;
}

.lesson-notes__item {
  display: flex;
  align-items: stretch;
  gap: 0.35rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  overflow: hidden;
}

.lesson-notes__jump {
  flex: 1;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  text-align: left;
  background: transparent;
  border: 0;
  color: #fff;
  padding: 0.7rem 0.8rem;
  cursor: pointer;
  min-width: 0;
}

.lesson-notes__jump:hover {
  background: rgba(255, 255, 255, 0.05);
}

.lesson-notes__time {
  flex: 0 0 auto;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  color: var(--brand);
  font-size: 0.85rem;
  min-width: 3.2rem;
}

.lesson-notes__body {
  flex: 1;
  white-space: pre-wrap;
  word-break: break-word;
  font-size: 0.9rem;
  line-height: 1.4;
  color: rgba(255, 255, 255, 0.88);
}

.lesson-notes__delete {
  border: 0;
  background: transparent;
  color: rgba(255, 255, 255, 0.4);
  font-size: 1.2rem;
  line-height: 1;
  padding: 0.55rem 0.7rem;
  cursor: pointer;
}

.lesson-notes__delete:hover {
  color: #f0a5a5;
  background: rgba(255, 255, 255, 0.04);
}

/* Course notes link in sidebar */
.course-notes {
  padding: 0.75rem 1.1rem;
  border-bottom: 1px solid var(--border);
}

.course-notes__link-all {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text);
  font-size: 0.88rem;
  font-weight: 700;
  padding: 0.45rem 0.55rem;
  border-radius: 8px;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.course-notes__link-all:hover {
  color: var(--brand);
  border-color: var(--brand);
  background: var(--brand-soft);
}

.course-notes__link-label {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.course-notes__link-label i {
  color: var(--brand);
  font-size: 0.85rem;
}

.course-notes__count {
  flex: 0 0 auto;
  min-width: 1.5rem;
  height: 1.5rem;
  padding: 0 0.4rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: var(--brand);
  color: #111;
  font-size: 0.75rem;
  font-weight: 800;
}

.course-notes__link-hint {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted);
}

.course-notes__link-all:hover .course-notes__link-hint {
  color: var(--brand);
}

/* Dedicated course notes page */
.course-notes-page {
  padding-top: 1.5rem;
  padding-bottom: 3rem;
  max-width: 820px;
}

.course-notes-page__header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.course-notes-page__sub {
  font-size: 0.95rem;
}

.course-notes-page__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.course-notes-page__count {
  margin: 0 0 0.75rem;
  font-size: 0.9rem;
}

.course-notes-page__search {
  margin: 0 0 1.25rem;
}

.course-notes-page__search-input {
  width: 100%;
  max-width: 420px;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.95rem;
}

.course-notes-page__search-input:focus {
  outline: none;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-soft);
}

.course-notes-page__no-results {
  margin: 0 0 1rem;
  font-size: 0.92rem;
}

.course-notes-page__list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.course-notes-page__section {
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

.course-notes-page__video {
  margin: 0 0 0.65rem;
  font-size: 1.05rem;
  font-weight: 800;
}

.course-notes-page__video a {
  color: var(--text);
  text-decoration: none;
}

.course-notes-page__video a:hover {
  color: var(--brand);
}

.course-notes-page__notes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.course-notes-page__note {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  text-decoration: none;
  color: var(--text);
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  transition: background var(--transition), border-color var(--transition);
}

.course-notes-page__note:hover {
  background: var(--bg-subtle);
  border-color: var(--brand);
  color: var(--text);
}

.course-notes-page__time {
  flex: 0 0 auto;
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  color: var(--brand);
  min-width: 3.2rem;
  font-size: 0.92rem;
}

.course-notes-page__body {
  flex: 1;
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.45;
  font-size: 0.95rem;
}

.course-notes-page__empty {
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 1.5rem;
  background: var(--bg-subtle);
}