html {
  scroll-behavior: smooth;
}

#lecturer-profile,
#lecturer-greeting,
#reward-gallery,
#lecturer-contents {
  scroll-margin-top: 96px;
}

.lecturer-detail > .page-section:first-child {
  margin-top: 0;
}

.lecturer-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}

.lecturer-card {
  overflow: hidden;
}

.lecturer-card__image {
  width: 100%;
  aspect-ratio: 720 / 1280;
  object-fit: cover;
}

.lecturer-card__body {
  padding: 16px;
}

.lecturer-card__body h3 {
  margin: .5rem 0;
}

.lecturer-card__body p {
  color: var(--ldla-muted);
}

.lecturer-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: 14px;
  font-size: .9rem;
}

.lecturer-card__like-count {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  color: #be185d;
  font-weight: 800;
  white-space: nowrap;
  cursor: default;
}

.lecturer-card__detail-link {
  flex: 0 0 auto;
  white-space: nowrap;
}

.lecturer-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 18px 0;
}

.lecturer-tab {
  border: 1px solid var(--ldla-border);
  background: #fff;
  border-radius: 999px;
  padding: .55rem 1rem;
  font-weight: 800;
  cursor: pointer;
}

.lecturer-tab.is-active {
  background: var(--ldla-blue);
  color: #fff;
}

.lecturer-panel {
  display: none;
}

.lecturer-panel.is-active {
  display: grid;
}

.lecturer-detail__hero {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 30px;
  padding: 28px;
  align-items: center;
}

.lecturer-detail__image-wrap {
  max-width: 260px;
}

.lecturer-detail__card {
  width: 100%;
  border-radius: 22px;
  object-fit: cover;
}

.lecturer-detail__body h1 {
  margin: 0 0 14px;
  font-size: clamp(2rem, 3vw, 3rem);
}

.lecturer-detail__profile {
  color: var(--ldla-muted);
  line-height: 1.8;
  margin: 0;
}

.lecturer-detail__summary {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 22px;
}

.lecturer-detail__popularity {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  cursor: default;
}

.lecturer-detail__popularity > span:first-child {
  color: var(--ldla-muted);
  font-size: .9rem;
  font-weight: 800;
}

.lecturer-detail__popularity strong {
  color: var(--ldla-blue-dark);
  font-size: 1.45rem;
  line-height: 1;
}

.lecturer-detail__popularity-unit {
  color: var(--ldla-muted);
  font-size: .85rem;
  font-weight: 800;
}

.lecturer-like-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
}

.lecturer-detail__actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.lecturer-video-panel {
  display: grid;
  grid-template-columns: minmax(220px, 300px) minmax(0, 1fr);
  gap: 28px;
  width: 100%;
  padding: 24px;
  align-items: center;
}

.lecturer-video-panel__media {
  position: relative;
  min-width: 0;
  width: min(280px, 100%);
  justify-self: center;
}

.lecturer-intro-video {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 18px;
  background: transparent;
}


.lecturer-intro-video__play {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  min-height: 46px;
  border: 1px solid rgba(255, 255, 255, .78);
  border-radius: 999px;
  padding: .7rem 1.05rem;
  background: rgba(15, 23, 42, .84);
  color: #fff;
  font: inherit;
  font-weight: 900;
  cursor: pointer;
  transform: translate(-50%, -50%);
  box-shadow: 0 10px 24px rgba(15, 23, 42, .28);
}

.lecturer-intro-video__play:hover {
  background: rgba(30, 64, 175, .92);
}

.lecturer-intro-video__play[hidden] {
  display: none;
}

.lecturer-intro-video__noscript {
  margin: .75rem 0 0;
  text-align: center;
}

.lecturer-video-panel__text h3 {
  margin: 0 0 .7rem;
}

.lecturer-video-panel__text p {
  color: var(--ldla-muted);
  line-height: 1.8;
  margin: 0;
}

.lecturer-video-placeholder {
  display: grid;
  place-items: center;
  gap: 8px;
  min-height: 260px;
  padding: 24px;
  border: 1px dashed #cbd5e1;
  border-radius: 18px;
  background: #f8fafc;
  text-align: center;
  color: var(--ldla-muted);
}

.lecturer-video-placeholder code {
  max-width: 100%;
  overflow-wrap: anywhere;
  font-size: .82rem;
}

.lecturer-video-placeholder--compact {
  min-height: 100%;
  border: 0;
  border-radius: 0;
  background: #0f172a;
  color: rgba(255, 255, 255, .78);
}

.lecturer-section-heading {
  align-items: center;
}

.lecturer-topic-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.lecturer-topic-card {
  padding: 18px 20px;
}

.lecturer-topic-card__title {
  margin: 0 0 .7rem;
  font-size: 1.15rem;
}

.lecturer-topic-card__desc {
  margin: 0 0 1rem;
  color: var(--ldla-muted);
  line-height: 1.7;
}

.lecturer-topic-card__date {
  margin: 0 0 .8rem;
  color: var(--ldla-muted);
  font-size: .9rem;
}

.lecturer-topic-card__tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.lecturer-empty-box {
  padding: 18px 20px;
  color: var(--ldla-muted);
}

.reward-gallery {
  display: grid;
  gap: 18px;
}

.reward-site-tabs {
  display: inline-flex;
  gap: 6px;
  width: fit-content;
  margin: 0 0 18px;
  border: 1px solid var(--ldla-border);
  border-radius: 999px;
  padding: 5px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(30, 64, 175, .06);
}

.reward-site-tab {
  min-width: 108px;
  border-radius: 999px;
  padding: .68rem 1.15rem;
  color: var(--ldla-muted);
  font-weight: 900;
  text-align: center;
  text-decoration: none;
}

.reward-site-tab.is-active {
  background: var(--ldla-blue);
  color: #fff;
}

.reward-site-tab:not(.is-active):hover {
  background: var(--ldla-soft);
  color: var(--ldla-blue-dark);
}

.reward-gallery__lead {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 20px;
  align-items: center;
}

.reward-gallery__lead p {
  margin: 0;
}

.reward-gallery__status {
  color: var(--ldla-blue-dark);
  font-weight: 900;
  white-space: nowrap;
}

.reward-gallery__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.reward-card {
  overflow: hidden;
}

.reward-card__media {
  position: relative;
  aspect-ratio: 9 / 16;
  background: #0f172a;
  overflow: hidden;
}

.reward-card__thumb,
.reward-card__video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #0f172a;
}

.reward-card__play {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 3;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  min-height: 46px;
  border: 1px solid rgba(255, 255, 255, .78);
  border-radius: 999px;
  padding: .7rem 1.05rem;
  background: rgba(15, 23, 42, .84);
  color: #fff;
  font: inherit;
  font-weight: 900;
  cursor: pointer;
  transform: translate(-50%, -50%);
  box-shadow: 0 10px 24px rgba(15, 23, 42, .28);
}

.reward-card__play:hover {
  background: rgba(30, 64, 175, .92);
}

.reward-card__play[hidden] {
  display: none;
}

.reward-card.is-locked .reward-card__thumb {
  filter: blur(2px) brightness(.58);
  transform: scale(1.02);
}

.reward-card__locked,
.reward-card__unlocked {
  position: absolute;
  inset: 0;
}

.reward-card__locked {
  display: grid;
  place-items: center;
  align-content: center;
  gap: 12px;
  padding: 22px;
  text-align: center;
  color: rgba(255, 255, 255, .86);
  background: linear-gradient(135deg, rgba(15, 23, 42, .82), rgba(30, 41, 59, .72));
  font-weight: 900;
}

.reward-card__locked[hidden],
.reward-card__unlocked[hidden] {
  display: none !important;
}

.reward-card__lock-icon {
  font-size: 1.8rem;
  line-height: 1;
}

.reward-card__body {
  padding: 16px 18px 18px;
}

.reward-card__badge {
  display: inline-flex;
  margin: 0 0 .55rem;
  padding: .25rem .6rem;
  border-radius: 999px;
  background: var(--ldla-soft);
  color: var(--ldla-blue-dark);
  font-size: .8rem;
  font-weight: 900;
}

.reward-card__body h3 {
  margin: 0 0 .55rem;
  font-size: 1.08rem;
}

.reward-card__body p {
  color: var(--ldla-muted);
  line-height: 1.65;
}

.reward-card__unlock-text {
  margin-bottom: 0;
  font-weight: 800;
}

@media (max-width: 1023px) {
  .lecturer-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .lecturer-video-panel {
    grid-template-columns: 1fr;
  }

  .lecturer-video-panel__media {
    margin: 0 auto;
  }

  .reward-gallery__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 767px) {
  .lecturer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .lecturer-detail__hero {
    grid-template-columns: 1fr;
  }

  .lecturer-detail__image-wrap {
    max-width: 260px;
    margin: auto;
  }

  .lecturer-detail__summary,
  .lecturer-detail__actions {
    gap: 10px;
  }

  .lecturer-topic-grid {
    grid-template-columns: 1fr;
  }

  .reward-gallery__lead {
    display: block;
  }

  .reward-gallery__grid {
    grid-template-columns: 1fr;
  }

  .reward-gallery__status {
    margin-top: .8rem !important;
    white-space: normal;
  }
}

@media (max-width: 767px) {
  .reward-site-tabs {
    display: flex;
    width: 100%;
  }

  .reward-site-tab {
    flex: 1;
    min-width: 0;
  }
}