/* ============================================================
   learn-to-play.css
   Styles for the Learn to Play page (hub, track, lesson views)
   Builds on top of the existing platform CSS variables
   ============================================================ */

/* ── Page shell ─────────────────────────────────────────────── */
.ltp-page {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 0 80px 0;
}

/* ── View sections ───────────────────────────────────────────── */
.ltp-view {
  display: none;
  animation: ltpFadeIn 0.25s ease;
}
.ltp-view.active {
  display: block;
}
@keyframes ltpFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Page heading ────────────────────────────────────────────── */
.ltp-page-heading {
  font-size: 26px;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 4px;
}
.ltp-page-subheading {
  font-size: 14px;
  color: #666;
  margin-bottom: 20px;
}

/* ── Search bar ──────────────────────────────────────────────── */
.ltp-search-wrap {
  position: relative;
  margin-bottom: 20px;
}
.ltp-search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: #aaa;
  pointer-events: none;
}
.ltp-search-input {
  width: 100%;
  padding: 13px 16px 13px 44px;
  border: 1.5px solid var(--medium-gray);
  border-radius: 12px;
  font-size: 15px;
  font-family: var(--font-family);
  background: var(--white);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.ltp-search-input:focus {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(1, 51, 105, 0.08);
}
.ltp-search-input::placeholder {
  color: #bbb;
}
.ltp-search-clear {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: #aaa;
  padding: 4px;
  display: none;
  line-height: 1;
}
.ltp-search-clear.visible {
  display: block;
}
.ltp-search-clear:hover {
  color: #666;
}

/* ── Section label ───────────────────────────────────────────── */
.ltp-section-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: #999;
  margin-bottom: 12px;
}

/* ── Track grid ──────────────────────────────────────────────── */
.ltp-track-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 24px;
}
@media (min-width: 540px) {
  .ltp-track-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}
@media (min-width: 720px) {
  .ltp-track-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ── Track card ──────────────────────────────────────────────── */
.ltp-track-card {
  background: var(--white);
  border-radius: 16px;
  overflow: hidden;
  border: 1.5px solid #F0F0F0;
  cursor: pointer;
  transition: transform var(--transition-fast),
              border-color var(--transition-fast),
              box-shadow var(--transition-fast);
  text-decoration: none;
  display: block;
  color: inherit;
}
.ltp-track-card:hover {
  transform: translateY(-3px);
  border-color: var(--primary-blue);
  box-shadow: 0 6px 20px rgba(1, 51, 105, 0.1);
}
.ltp-track-thumb {
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
}
.ltp-track-body {
  padding: 12px 14px 14px;
}
.ltp-track-coach {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #aaa;
  margin-bottom: 3px;
}
.ltp-track-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary-blue);
  line-height: 1.3;
  margin-bottom: 8px;
}
.ltp-track-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 7px;
}
.ltp-track-count {
  font-size: 11px;
  color: #aaa;
}
.ltp-track-prog-label {
  font-size: 11px;
  color: var(--success-green);
  font-weight: 600;
}
.ltp-prog-bar {
  height: 3px;
  background: #EBEBEB;
  border-radius: 2px;
  overflow: hidden;
}
.ltp-prog-fill {
  height: 100%;
  background: var(--success-green);
  border-radius: 2px;
  transition: width 0.4s ease;
}

/* ── Search results ──────────────────────────────────────────── */
.ltp-results-wrap {
  display: none;
  margin-bottom: 24px;
}
.ltp-results-wrap.active {
  display: block;
}
.ltp-results-box {
  background: var(--white);
  border-radius: 14px;
  border: 1.5px solid #E5E5E5;
  overflow: hidden;
}
.ltp-result-item {
  padding: 14px 16px;
  border-bottom: 1px solid #F5F5F5;
  cursor: pointer;
  transition: background var(--transition-fast);
}
.ltp-result-item:last-child {
  border-bottom: none;
}
.ltp-result-item:hover {
  background: #F8F8F8;
}
.ltp-result-track-badge {
  display: inline-block;
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 5px;
  margin-bottom: 5px;
}
.ltp-result-title {
  font-size: 14px;
  font-weight: 600;
  color: #222;
  margin-bottom: 3px;
}
.ltp-result-preview {
  font-size: 12px;
  color: #999;
  line-height: 1.5;
  margin-bottom: 6px;
}
.ltp-result-badges {
  display: flex;
  gap: 5px;
  align-items: center;
  flex-wrap: wrap;
}
.ltp-result-dur {
  font-size: 11px;
  color: #bbb;
  margin-left: 2px;
}
.ltp-no-results {
  padding: 32px;
  text-align: center;
  color: #aaa;
  font-size: 14px;
}

/* ── Content type badges ─────────────────────────────────────── */
.ltp-badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 6px;
}
.ltp-badge-video { background: #E6F1FB; color: #0C447C; }
.ltp-badge-text  { background: #EAF3DE; color: #27500A; }
.ltp-badge-image { background: #FAEEDA; color: #633806; }
.ltp-badge-quiz  { background: #EEF3FE; color: #3C3489; }

/* ── Back button ─────────────────────────────────────────────── */
.ltp-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-blue);
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  margin-bottom: 16px;
  font-family: var(--font-family);
  transition: opacity var(--transition-fast);
}
.ltp-back-btn:hover {
  opacity: 0.7;
}

/* ── Track header card ───────────────────────────────────────── */
.ltp-track-header {
  background: var(--white);
  border-radius: 16px;
  padding: 20px;
  border: 1.5px solid #F0F0F0;
  margin-bottom: 16px;
}
.ltp-track-header-emoji {
  font-size: 44px;
  display: block;
  margin-bottom: 12px;
  line-height: 1;
}
.ltp-track-header-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 8px;
}
.ltp-track-header-desc {
  font-size: 14px;
  color: #555;
  line-height: 1.65;
  margin-bottom: 14px;
}
.ltp-track-header-pills {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.ltp-pill {
  font-size: 12px;
  color: #555;
  background: #F5F5F5;
  padding: 4px 12px;
  border-radius: 20px;
  font-weight: 500;
}

/* ── CTA button ──────────────────────────────────────────────── */
.ltp-cta-btn {
  width: 100%;
  padding: 14px;
  background: var(--primary-blue);
  color: var(--white);
  border: none;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: background var(--transition-fast);
  font-family: var(--font-family);
  margin-bottom: 20px;
}
.ltp-cta-btn:hover {
  background: #01255C;
}

/* ── Lesson list ─────────────────────────────────────────────── */
.ltp-lesson-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.ltp-lesson-row {
  background: var(--white);
  border-radius: 14px;
  border: 1.5px solid #F0F0F0;
  padding: 14px 16px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  transition: border-color var(--transition-fast),
              box-shadow var(--transition-fast);
}
.ltp-lesson-row:hover {
  border-color: var(--primary-blue);
  box-shadow: 0 2px 10px rgba(1, 51, 105, 0.08);
}
.ltp-lesson-row.done {
  border-color: #9FE1CB;
  background: #FAFFF9;
}
.ltp-lesson-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #F0F0F0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  color: #666;
  flex-shrink: 0;
  transition: background var(--transition-fast);
}
.ltp-lesson-row.done .ltp-lesson-num {
  background: var(--success-green);
  color: white;
}
.ltp-lesson-info {
  flex: 1;
  min-width: 0;
}
.ltp-lesson-title {
  font-size: 14px;
  font-weight: 600;
  color: #222;
  margin-bottom: 5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.ltp-lesson-meta {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
}
.ltp-lesson-dur {
  font-size: 11px;
  color: #bbb;
}
.ltp-lesson-end {
  flex-shrink: 0;
  color: var(--success-green);
  font-weight: 700;
  font-size: 16px;
}

/* ── Lesson view ─────────────────────────────────────────────── */
.ltp-lesson-progress-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.ltp-lesson-prog-track {
  flex: 1;
  height: 5px;
  background: #EBEBEB;
  border-radius: 3px;
  overflow: hidden;
}
.ltp-lesson-prog-fill {
  height: 100%;
  background: var(--success-green);
  border-radius: 3px;
  transition: width 0.4s ease;
}
.ltp-lesson-prog-label {
  font-size: 12px;
  color: #aaa;
  white-space: nowrap;
  flex-shrink: 0;
}

/* Video block */
.ltp-video-block {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #0d1117;
  border-radius: 14px;
  overflow: hidden;
  margin-bottom: 20px;
  position: relative;
  cursor: pointer;
}
.ltp-video-poster {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.ltp-video-poster img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.7;
}
.ltp-video-play-ring {
  position: relative;
  z-index: 1;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-fast), background var(--transition-fast);
}
.ltp-video-block:hover .ltp-video-play-ring {
  transform: scale(1.1);
  background: rgba(255, 255, 255, 0.25);
}
.ltp-video-play-arrow {
  width: 0;
  height: 0;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  border-left: 18px solid white;
  margin-left: 4px;
}
.ltp-video-dur {
  position: absolute;
  bottom: 10px;
  right: 14px;
  font-size: 11px;
  color: rgba(255, 255, 255, 0.7);
  z-index: 1;
}
.ltp-video-label {
  font-size: 12px;
  color: #888;
  margin-top: -12px;
  margin-bottom: 20px;
  padding: 0 2px;
}
.ltp-video-iframe {
  width: 100%;
  aspect-ratio: 16 / 9;
  border: none;
  display: block;
  border-radius: 14px;
  margin-bottom: 20px;
}

/* Lesson title & body */
.ltp-lesson-title-big {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary-blue);
  line-height: 1.25;
  margin-bottom: 12px;
}
.ltp-lesson-body-para {
  font-size: 15px;
  color: #444;
  line-height: 1.75;
  margin-bottom: 14px;
}

/* Lesson images */
.ltp-lesson-images {
  margin-bottom: 16px;
}
.ltp-lesson-img {
  width: 100%;
  border-radius: 12px;
  display: block;
  margin-bottom: 8px;
  max-height: 260px;
  object-fit: cover;
}
.ltp-lesson-img-placeholder {
  width: 100%;
  min-height: 120px;
  background: #EAF3DE;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: #639922;
  font-weight: 500;
  border: 1px dashed #C0DD97;
  margin-bottom: 8px;
  padding: 16px;
  text-align: center;
}

/* Complete button & done chip */
.ltp-done-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: #085041;
  font-weight: 600;
  background: #E1F5EE;
  padding: 8px 16px;
  border-radius: 20px;
  margin-bottom: 18px;
}

/* Lesson nav buttons */
.ltp-lesson-nav {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 10px;
  margin-top: 8px;
  padding-top: 20px;
  border-top: 1px solid #F0F0F0;
}
.ltp-lesson-nav.two-col {
  grid-template-columns: 1fr 1fr;
}
.ltp-lesson-nav.one-col {
  grid-template-columns: 1fr;
}
.ltp-nav-btn {
  padding: 12px 10px;
  border-radius: 12px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: 1.5px solid #E0E0E0;
  background: var(--white);
  color: #333;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all var(--transition-fast);
  font-family: var(--font-family);
}
.ltp-nav-btn:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
}
.ltp-nav-btn.primary {
  background: var(--primary-blue);
  color: white;
  border-color: var(--primary-blue);
}
.ltp-nav-btn.primary:hover {
  background: #01255C;
  border-color: #01255C;
}
.ltp-nav-btn.success {
  background: var(--success-green);
  color: white;
  border-color: var(--success-green);
}
.ltp-nav-btn.success:hover {
  background: #0F6E56;
  border-color: #0F6E56;
}
.ltp-nav-btn.success:disabled {
  background: #9FE1CB;
  border-color: #9FE1CB;
  cursor: default;
}

/* ── Resume banner ───────────────────────────────────────────── */
.ltp-resume-banner {
  background: #E1F5EE;
  border: 1px solid #9FE1CB;
  border-radius: 12px;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
  cursor: pointer;
  transition: background var(--transition-fast);
}
.ltp-resume-banner:hover {
  background: #C5ECD8;
}
.ltp-resume-text {
  font-size: 13px;
  color: #085041;
  font-weight: 500;
}
.ltp-resume-text strong {
  font-weight: 700;
}
.ltp-resume-btn {
  font-size: 12px;
  font-weight: 700;
  color: #085041;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── Track complete state ────────────────────────────────────── */
.ltp-complete-banner {
  text-align: center;
  padding: 24px 20px;
  background: var(--white);
  border-radius: 16px;
  border: 1.5px solid #9FE1CB;
  margin-bottom: 20px;
}
.ltp-complete-check {
  font-size: 40px;
  margin-bottom: 10px;
}
.ltp-complete-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 6px;
}
.ltp-complete-sub {
  font-size: 13px;
  color: #666;
}

/* ── View transitions ────────────────────────────────────────── */
/* Slide-in from right when going deeper (hub → track → lesson) */
.ltp-view.slide-in {
  animation: ltpSlideIn 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
/* Slide-in from left when going back */
.ltp-view.slide-back {
  animation: ltpSlideBack 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
@keyframes ltpSlideIn {
  from { opacity: 0; transform: translateX(28px); }
  to   { opacity: 1; transform: translateX(0); }
}
@keyframes ltpSlideBack {
  from { opacity: 0; transform: translateX(-28px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ── Skeleton loaders ────────────────────────────────────────── */
.ltp-skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: ltpSkeleton 1.4s infinite;
  border-radius: 8px;
}
@keyframes ltpSkeleton {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.ltp-skeleton-card {
  height: 160px;
  border-radius: 16px;
  margin-bottom: 2px;
}
.ltp-skeleton-row {
  height: 72px;
  border-radius: 14px;
  margin-bottom: 10px;
}

/* ── Track card hover — active state on tap (mobile) ─────────── */
.ltp-track-card:active {
  transform: scale(0.97);
  box-shadow: none;
}
.ltp-lesson-row:active {
  background: #F0F8FF;
}

/* ── Search highlight ────────────────────────────────────────── */
.ltp-result-highlight {
  background: #FFF8C5;
  border-radius: 2px;
  padding: 0 1px;
}

/* ── Empty state ─────────────────────────────────────────────── */
.ltp-empty-state {
  text-align: center;
  padding: 48px 24px;
}
.ltp-empty-icon {
  font-size: 48px;
  margin-bottom: 14px;
  opacity: 0.4;
}
.ltp-empty-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark-gray);
  margin-bottom: 8px;
}
.ltp-empty-sub {
  font-size: 14px;
  color: #888;
  line-height: 1.6;
}

/* ── Track complete celebration ──────────────────────────────── */
.ltp-complete-banner {
  text-align: center;
  padding: 28px 20px;
  background: linear-gradient(135deg, #E1F5EE 0%, #EAF3DE 100%);
  border-radius: 16px;
  border: 1.5px solid #9FE1CB;
  margin-bottom: 20px;
  animation: ltpCelebrate 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes ltpCelebrate {
  from { opacity: 0; transform: scale(0.9); }
  to   { opacity: 1; transform: scale(1); }
}
.ltp-complete-trophy {
  font-size: 48px;
  margin-bottom: 10px;
  display: block;
  animation: ltpBounce 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) 0.2s both;
}
@keyframes ltpBounce {
  from { transform: scale(0.5) translateY(10px); opacity: 0; }
  to   { transform: scale(1) translateY(0);      opacity: 1; }
}
.ltp-complete-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 6px;
}
.ltp-complete-sub {
  font-size: 14px;
  color: #555;
  margin-bottom: 16px;
}
.ltp-complete-stats {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 12px;
}
.ltp-complete-stat {
  text-align: center;
}
.ltp-complete-stat-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary-blue);
}
.ltp-complete-stat-label {
  font-size: 11px;
  color: #888;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.ltp-complete-actions {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin-top: 18px;
}
.ltp-complete-action-btn {
  padding: 10px 20px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  border: 1.5px solid #1D9E75;
  font-family: var(--font-family);
  transition: all var(--transition-fast);
}
.ltp-complete-action-btn.primary {
  background: #1D9E75;
  color: white;
}
.ltp-complete-action-btn.secondary {
  background: white;
  color: #1D9E75;
}
.ltp-complete-action-btn:hover {
  opacity: 0.85;
}

/* ── Progress ring (lesson view) ─────────────────────────────── */
.ltp-prog-ring-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}
.ltp-prog-ring {
  flex-shrink: 0;
}
.ltp-prog-ring-track {
  fill: none;
  stroke: #EBEBEB;
  stroke-width: 3;
}
.ltp-prog-ring-fill {
  fill: none;
  stroke: var(--success-green);
  stroke-width: 3;
  stroke-linecap: round;
  transform: rotate(-90deg);
  transform-origin: 50% 50%;
  transition: stroke-dashoffset 0.5s ease;
}
.ltp-prog-ring-text {
  font-size: 9px;
  font-weight: 700;
  fill: var(--primary-blue);
  text-anchor: middle;
  dominant-baseline: central;
}

/* ── Sticky lesson nav on mobile ─────────────────────────────── */
@media (max-width: 600px) {
  .ltp-lesson-nav-sticky {
    position: sticky;
    bottom: calc(var(--bottom-nav-height, 60px) + 8px);
    background: rgba(245, 245, 245, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 10px 0 4px;
    margin-left: -16px;
    margin-right: -16px;
    padding-left: 16px;
    padding-right: 16px;
    border-top: 1px solid #E5E5E5;
    z-index: 10;
  }
}

/* ── Save badge pulse ────────────────────────────────────────── */
#ltp-save-badge.pulse {
  animation: ltpBadgePulse 0.6s ease;
}
@keyframes ltpBadgePulse {
  0%,100% { transform: scale(1); }
  40%     { transform: scale(1.12); }
}

/* ── Scroll to top button ────────────────────────────────────── */
.ltp-scroll-top {
  position: fixed;
  bottom: calc(var(--bottom-nav-height, 60px) + 20px);
  right: 16px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary-blue);
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(1, 51, 105, 0.3);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.25s, transform 0.25s;
  pointer-events: none;
  z-index: 50;
}
.ltp-scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.ltp-scroll-top:hover {
  background: #01255C;
}

/* ── Image lightbox ──────────────────────────────────────────── */
.ltp-lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  animation: ltpFadeIn 0.2s ease;
}
.ltp-lightbox img {
  max-width: 100%;
  max-height: 90vh;
  border-radius: 8px;
  object-fit: contain;
}
.ltp-lightbox-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  border: none;
  color: white;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── Reduced motion ──────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .ltp-view,
  .ltp-view.slide-in,
  .ltp-view.slide-back,
  .ltp-complete-banner,
  .ltp-complete-trophy,
  .ltp-skeleton {
    animation: none !important;
    transition: none !important;
  }
  .ltp-prog-ring-fill,
  .ltp-prog-fill,
  .ltp-lesson-prog-fill {
    transition: none !important;
  }
}

/* ── Mobile tweaks ───────────────────────────────────────────── */
@media (max-width: 480px) {
  .ltp-page-heading        { font-size: 22px; }
  .ltp-page-subheading     { font-size: 13px; margin-bottom: 16px; }
  .ltp-track-thumb         { height: 72px; font-size: 32px; }
  .ltp-track-title         { font-size: 13px; }
  .ltp-track-body          { padding: 10px 12px 12px; }
  .ltp-lesson-nav          { gap: 8px; }
  .ltp-lesson-nav.two-col,
  .ltp-lesson-nav.one-col  { grid-template-columns: 1fr; }
  .ltp-lesson-title-big    { font-size: 19px; }
  .ltp-nav-btn             { font-size: 12px; padding: 11px 8px; }
  .ltp-track-header        { padding: 16px; }
  .ltp-track-header-emoji  { font-size: 36px; }
  .ltp-track-header-title  { font-size: 19px; }
  .ltp-cta-btn             { font-size: 14px; padding: 12px; }
  .ltp-lesson-row          { padding: 12px 12px; gap: 10px; }
  .ltp-complete-stats      { gap: 16px; }
  .ltp-complete-actions    { flex-direction: column; align-items: stretch; }
}

/* ── Landscape phones ────────────────────────────────────────── */
@media (max-height: 500px) and (orientation: landscape) {
  .ltp-video-block { aspect-ratio: 16 / 7; }
  .ltp-page        { padding-bottom: 56px; }
}