/* ==========================================================================
   ОГЛАВЛЕНИЕ (course-block-02-free.css) — Лендинг курса, блок 2
   HTML: #course-block-02 (секция «Смотреть бесплатно»)
   JS:   js/course-pages/course-page-paid.js (бесплатный урок, подписка)

   1. Фон block-04 на лендинге — без комет, без нахлёста на hero
   2. Кнопка «Смотреть через соцсети»
   3. Крупный заголовок «Смотрите прямо на сайте»
   4. Сетка карточек уроков
   5. Карточка урока — видео, play (YouTube), панель снизу
   6. После превью — ч/б (.is-preview-locked на body)
   7. Блок «Подписаться» после сетки видео
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. ФОН БЛОКА 2 НА ЛЕНДИНГЕ
   -------------------------------------------------------------------------- */
.page-course .block-04__atmosphere--static .block-04__comets-zone {
  display: none;
}

.page-course #course-block-02.block-04 {
  margin-top: 0;
  padding-top: calc(var(--gap-xl) * 1.35);
}

.page-course .block-04__deco-scissors {
  display: none;
}

/* --------------------------------------------------------------------------
   2. КНОПКА «СМОТРЕТЬ ЧЕРЕЗ СОЦСЕТИ»
   HTML: .course-free__social-btn[data-gate-trigger="social"]
   -------------------------------------------------------------------------- */
.course-free__social-action {
  margin: 1.75rem 0 0;
  display: flex;
  justify-content: center;
}

.course-free__social-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  min-width: min(100%, calc(22rem - 30px));
  min-height: 52px;
  padding: 1.05rem 0.825rem;
  margin-top: 20px;
  font-size: var(--text-md);
  box-shadow: 0 4px 24px rgba(255, 107, 26, 0.28);
}

.course-free__social-btn-icon {
  flex-shrink: 0;
  width: 1.55rem;
  height: 1.55rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.course-free__social-btn-icon svg {
  width: 100%;
  height: 100%;
  display: block;
  filter: drop-shadow(0 1px 3px rgba(0, 0, 0, 0.25));
  transition: transform var(--duration-normal);
}

.course-free__social-btn-text {
  line-height: 1.2;
}

.course-free__social-btn:hover .course-free__social-btn-icon svg,
.course-free__social-btn:focus-visible .course-free__social-btn-icon svg {
  transform: scale(1.08);
}

.course-free__social-btn:hover,
.course-free__social-btn:focus-visible {
  box-shadow: 0 8px 32px rgba(255, 107, 26, 0.45);
}

/* --------------------------------------------------------------------------
   3. ЗАГОЛОВОК СЕКЦИИ УРОКОВ НА САЙТЕ
   HTML: .course-free__heading-site
   -------------------------------------------------------------------------- */
.course-free__heading-site {
  font-size: clamp(1.45rem, 3.2vw, 2rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

/* --------------------------------------------------------------------------
   4. СЕТКА УРОКОВ
   HTML: [data-video-grid]
   -------------------------------------------------------------------------- */
.course-free__video-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--gap-md);
}

/* --------------------------------------------------------------------------
   5. КАРТОЧКА УРОКА
   HTML: .course-free__video-card[data-video-card]
   -------------------------------------------------------------------------- */
.course-free__video-card {
  position: relative;
  border: none;
  padding: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  background: #0a0a0f;
  aspect-ratio: 16 / 10;
  transition: transform var(--duration-normal), box-shadow var(--duration-normal), filter var(--duration-normal);
}

.course-free__video-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.25);
}

.course-free__video-card video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  background: #0a0a0f;
}

.course-free__video-num {
  position: absolute;
  top: 0.45rem;
  left: 0.45rem;
  z-index: 3;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 700;
  color: #fff;
  background: rgba(0, 0, 0, 0.72);
}

/* Центральная кнопка Play — как YouTube (красный круг, белый треугольник) */
.course-free__video-play {
  position: absolute;
  top: 50%;
  left: 50%;
  z-index: 3;
  transform: translate(-50%, -50%);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: #ff0000;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.45);
  transition: opacity var(--duration-fast), transform var(--duration-normal);
  pointer-events: none;
}

.course-free__video-play .course-free__play-svg {
  width: 26px;
  height: 26px;
  display: block;
}

.course-free__video-card.is-playing .course-free__video-play {
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.88);
}

/* Нижняя панель — play, время, полоса прогресса (как на block-04 главной) */
.course-free__video-bar {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.45rem 0.35rem;
  background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.55) 35%, rgba(0, 0, 0, 0.88) 100%);
  pointer-events: none;
}

.course-free__video-bar-icon {
  flex-shrink: 0;
  width: 14px;
  height: 14px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}

.course-free__video-bar-icon .course-free__play-svg {
  width: 14px;
  height: 14px;
  display: block;
}

.course-free__video-bar-time {
  flex-shrink: 0;
  min-width: 4.5rem;
  font-size: 0.62rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: rgba(255, 255, 255, 0.92);
  white-space: nowrap;
}

.course-free__video-bar-track {
  flex: 1;
  min-width: 0;
  height: 3px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.28);
  overflow: hidden;
}

.course-free__video-bar-fill {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: #ff0000;
  transition: width 0.15s linear;
}

/* --------------------------------------------------------------------------
   6. ПОСЛЕ ПРЕВЬЮ — УРОКИ Ч/Б ДО ПОДПИСКИ
   HTML: body.page-course.is-preview-locked
   -------------------------------------------------------------------------- */
.page-course.is-preview-locked .course-free__video-card {
  filter: grayscale(1);
  opacity: 0.72;
}

.page-course.is-preview-locked .course-free__video-card:hover {
  transform: none;
  box-shadow: none;
}

/* --------------------------------------------------------------------------
   7. ПОДПИСКА ПОСЛЕ СЕТКИ ВИДЕО
   HTML: .course-free__subscribe, [data-gate-trigger="subscribe"]
   -------------------------------------------------------------------------- */
.course-free__subscribe {
  margin-top: 3.25rem;
  padding-top: 2.5rem;
  border-top: 1px solid rgba(10, 10, 15, 0.08);
  text-align: center;
}

.course-free__subscribe-btn {
  min-width: min(100%, 22rem);
  min-height: 54px;
  padding: 1rem 2rem;
  font-size: var(--text-md);
  box-shadow: 0 6px 28px rgba(255, 107, 26, 0.32);
}

.course-free__subscribe-btn:hover,
.course-free__subscribe-btn:focus-visible {
  box-shadow: 0 10px 36px rgba(255, 107, 26, 0.45);
}

.course-free__subscribe-hint {
  max-width: 36rem;
  margin: 1.15rem auto 0;
  font-size: var(--text-md);
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-text);
}