.single-lecture__article {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.single-lecture__hero {
  --bs-gutter-x: 24px;
  --bs-gutter-y: 24px;
  align-items: stretch;
  margin: 0;
}

.single-lecture__hero-content {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 24px;
  height: 100%;
  padding: 32px;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, #eef2f8 0%, #f8f9fc 100%);
}

.single-lecture__hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-secondary);
  font-size: var(--fz-body);
  line-height: var(--lh-body);
  color: var(--color-secondary-text);
}

.single-lecture__hero-meta-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-secondary-text);
}

.single-lecture__title {
  margin: 0;
  color: var(--color-primary-text);
}

.single-lecture__lead {
  margin: 0;
  font-family: var(--font-primary);
  font-weight: 500;
  font-size: clamp(18px, 1.1vw, 21px);
  line-height: 1.65;
  color: var(--color-secondary-text);
}

.single-lecture__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: stretch;
}

.single-lecture__action {
  min-width: 220px;
}

.single-lecture__pdf-link {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  min-width: 280px;
  padding: 16px 18px;
  border: 1px solid rgba(82, 108, 159, 0.18);
  border-radius: var(--radius-md);
  background: var(--color-white);
  box-shadow: 0 14px 34px rgba(31, 57, 108, 0.08);
}

.single-lecture__pdf-icon {
  flex-shrink: 0;
}

.single-lecture__pdf-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.single-lecture__pdf-title {
  font-family: var(--font-secondary);
  font-weight: 600;
  font-size: 16px;
  line-height: 1.35;
  color: var(--color-primary-text);
}

.single-lecture__pdf-meta {
  font-family: var(--font-secondary);
  font-weight: 500;
  font-size: 14px;
  line-height: 1.35;
  color: var(--color-secondary-text);
}

.single-lecture__poster {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, #dbe2ee 0%, #c8d2e4 100%);
  box-shadow: var(--shadow-button);
}

.single-lecture__poster-frame {
  width: 100%;
  height: 100%;
}

.single-lecture__poster-image,
.single-lecture__poster-placeholder {
  width: 100%;
  height: 100%;
}

.single-lecture__poster-image {
  object-fit: cover;
}

.single-lecture__poster--pdf-imported {
  padding: clamp(14px, 1vw, 18px);
  background: linear-gradient(180deg, #e7edf7 0%, #d6e0ef 100%);
}

.single-lecture__poster--pdf-imported .single-lecture__poster-frame {
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: calc(var(--radius-md) - 2px);
  background: rgba(255, 255, 255, 0.72);
}

.single-lecture__poster--pdf-imported .single-lecture__poster-image {
  object-fit: contain;
}

.single-lecture__poster-placeholder {
  background: linear-gradient(180deg, #dbe2ee 0%, #c8d2e4 100%);
}

.single-lecture__info-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.single-lecture__info-card,
.single-lecture__contacts-card {
  padding: 20px;
  border-radius: var(--radius-md);
  background: var(--color-white);
  box-shadow: var(--shadow-button);
}

.single-lecture__info-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.single-lecture__info-label {
  font-family: var(--font-secondary);
  font-weight: 500;
  font-size: 14px;
  line-height: 1.35;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-secondary-text);
}

.single-lecture__info-value {
  font-family: var(--font-primary);
  font-weight: 600;
  font-size: clamp(18px, 1.15vw, 22px);
  line-height: 1.4;
  color: var(--color-primary-text);
}

.single-lecture__body {
  --bs-gutter-x: 24px;
  --bs-gutter-y: 24px;
  margin: 0;
}

.single-lecture__content {
  padding: 32px;
  border-radius: var(--radius-md);
  background: var(--color-white);
  box-shadow: var(--shadow-button);
}

.single-lecture__content h2,
.single-lecture__section-title,
.single-lecture__aside-title {
  margin: 0 0 16px;
  color: var(--color-primary-text);
}

.single-lecture__content > * + *,
.single-lecture__section > * + * {
  margin-top: 16px;
}

.single-lecture__content p,
.single-lecture__content li,
.single-lecture__program-item,
.single-lecture__contact-phone,
.single-lecture__contact-name {
  font-family: var(--font-primary);
  font-weight: 500;
  font-size: clamp(16px, 1vw, 19px);
  line-height: 1.65;
  color: var(--color-secondary-text);
}

.single-lecture__content ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 0;
  list-style: none;
}

.single-lecture__content ul li {
  position: relative;
  padding-left: 18px;
}

.single-lecture__content ul li::before {
  content: "—";
  position: absolute;
  left: 0;
  top: 0;
}

.single-lecture__section {
  margin-top: 24px;
  padding: 32px;
  border-radius: var(--radius-md);
  background: #f7f9fd;
  box-shadow: inset 0 0 0 1px rgba(82, 108, 159, 0.08);
}

.single-lecture__program {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 0;
  list-style: none;
}

.single-lecture__program-item {
  position: relative;
  padding-left: 22px;
}

.single-lecture__program-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

.single-lecture__media-section {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.single-lecture__media-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.single-lecture__media-slider-wrap {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.single-lecture__media-slider {
  width: 100%;
  overflow: hidden;
}

.single-lecture__media-slide {
  height: auto;
}

.single-lecture__photo-card,
.single-lecture__video-card {
  width: 100%;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: var(--color-white);
  box-shadow: var(--shadow-button);
}

.single-lecture__photo-card {
  aspect-ratio: 4 / 3;
}

.single-lecture__video-card {
  aspect-ratio: 16 / 9;
}

.single-lecture__photo-image,
.single-lecture__video {
  display: block;
  width: 100%;
  height: 100%;
}

.single-lecture__photo-image {
  object-fit: cover;
}

.single-lecture__video {
  object-fit: contain;
  background: #111;
}

.single-lecture__media-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.single-lecture__media-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-round);
  background-color: var(--color-white);
  box-shadow: var(--shadow-button);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.single-lecture__media-arrow:hover {
  transform: translateY(-1px);
}

.single-lecture__media-arrow.swiper-button-disabled {
  opacity: 0.45;
  pointer-events: none;
}

.single-lecture__aside {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.single-lecture__contacts-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.single-lecture__contact-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.single-lecture__contact-name {
  font-weight: 600;
  color: var(--color-primary-text);
}

.single-lecture__contact-phone {
  font-family: var(--font-secondary);
  color: var(--color-dark-link);
}

.single-lecture__aside-action {
  align-self: flex-start;
}

@media (max-width: 1199.98px) {
  .single-lecture__hero-content,
  .single-lecture__content,
  .single-lecture__section,
  .single-lecture__info-card,
  .single-lecture__contacts-card {
    padding: 24px;
  }

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

  .single-lecture__poster-placeholder {
    min-height: 360px;
  }
}

@media (max-width: 767.98px) {
  .single-lecture__article {
    gap: 24px;
  }

  .single-lecture__hero {
    --bs-gutter-x: 0;
  }

  .single-lecture__hero-content,
  .single-lecture__content,
  .single-lecture__section,
  .single-lecture__info-card,
  .single-lecture__contacts-card {
    padding: 20px;
  }

  .single-lecture__info-grid {
    grid-template-columns: 1fr;
  }

  .single-lecture__actions {
    flex-direction: column;
  }

  .single-lecture__media-slider-wrap {
    gap: 18px;
  }

  .single-lecture__media-controls {
    gap: 12px;
  }

  .single-lecture__action,
  .single-lecture__pdf-link {
    width: 100%;
  }

  .single-lecture__pdf-link {
    min-width: 0;
  }
}

@media (max-width: 575.98px) {
  .single-lecture__title {
    font-size: clamp(28px, 8vw, 40px);
    line-height: 1.15;
  }

  .single-lecture__hero-content,
  .single-lecture__content,
  .single-lecture__section,
  .single-lecture__info-card,
  .single-lecture__contacts-card {
    padding: 18px 16px;
  }
}