/* Lesson preview — popup fullscreen no primeiro scroll */

html.lesson-preview-open,
body.lesson-preview-open {
  overflow: hidden;
  overscroll-behavior: none;
}

body.lesson-preview-open {
  position: fixed;
  inset: 0 auto auto 0;
  width: 100%;
}

[data-midpage-trigger] {
  display: block;
  width: 100%;
  height: 1px;
  margin: 0;
  padding: 0;
  border: 0;
  pointer-events: none;
  visibility: hidden;
}

.lesson-preview {
  position: fixed;
  inset: 0;
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(0.75rem, 2vw, 1.25rem);
  background:
    radial-gradient(ellipse 70% 55% at 50% 40%, rgba(255, 45, 45, 0.12), transparent 60%),
    rgba(0, 0, 0, 0.92);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  overscroll-behavior: none;
  overflow: hidden;
  transition:
    opacity 0.35s var(--ease),
    visibility 0.35s;
}

.lesson-preview.is-open {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.lesson-preview__panel {
  --lesson-chrome: 10.5rem;
  position: relative;
  width: min(1120px, 100%);
  max-height: calc(100vh - 1.5rem);
  max-height: calc(100dvh - 1.5rem);
  display: flex;
  flex-direction: column;
  gap: clamp(0.7rem, 1.6vw, 1.1rem);
  transform: translateY(18px) scale(0.98);
  transition: transform 0.4s var(--ease);
}

.lesson-preview.is-open .lesson-preview__panel {
  transform: translateY(0) scale(1);
}

.lesson-preview__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-shrink: 0;
}

.lesson-preview__eyebrow {
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--red-hot);
}

.lesson-preview__title {
  margin: 0;
  font-family: var(--font-accent, var(--font-display));
  font-size: clamp(1.15rem, 2.8vw, 1.75rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
}

.lesson-preview__sub {
  margin: 0.3rem 0 0;
  max-width: 36rem;
  color: var(--text-muted);
  font-size: clamp(0.88rem, 1.6vw, 1rem);
  line-height: 1.4;
}

.lesson-preview__close {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-size: 1.45rem;
  line-height: 1;
  cursor: pointer;
  transition:
    background 0.2s var(--ease),
    border-color 0.2s,
    transform 0.2s var(--ease);
}

.lesson-preview__close:hover {
  background: rgba(255, 45, 45, 0.18);
  border-color: rgba(255, 45, 45, 0.45);
  transform: translateY(-1px);
}

.lesson-preview__frame {
  position: relative;
  width: 100%;
  flex: 0 0 auto;
  /* Base grande em vh; nunca passa do espaço que sobra para header + CTA */
  height: 72vh;
  height: 72dvh;
  max-height: calc(100vh - var(--lesson-chrome));
  max-height: calc(100dvh - var(--lesson-chrome));
  min-height: 280px;
  overflow: hidden;
  border: 1px solid rgba(255, 45, 45, 0.28);
  border-radius: 8px;
  background: #000;
  box-shadow:
    0 0 0 1px rgba(255, 255, 255, 0.04),
    0 0 40px rgba(255, 45, 45, 0.18),
    0 24px 60px rgba(0, 0, 0, 0.55);
}

.lesson-preview__frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.lesson-preview__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 1rem;
  flex-shrink: 0;
}

.lesson-preview__skip {
  border: 0;
  background: transparent;
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 0.92rem;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 0.2em;
  transition: color 0.2s;
}

.lesson-preview__skip:hover {
  color: var(--text);
}

@media (max-height: 780px) {
  .lesson-preview__panel {
    --lesson-chrome: 9rem;
  }

  .lesson-preview__sub {
    display: none;
  }

  .lesson-preview__frame {
    height: 68vh;
    height: 68dvh;
  }
}

@media (max-height: 640px) {
  .lesson-preview__panel {
    --lesson-chrome: 7.5rem;
    gap: 0.55rem;
  }

  .lesson-preview__eyebrow {
    display: none;
  }

  .lesson-preview__title {
    font-size: 1.05rem;
  }

  .lesson-preview__frame {
    height: 62vh;
    height: 62dvh;
    min-height: 200px;
  }
}

@media (max-width: 640px) {
  .lesson-preview {
    padding: 0.65rem;
  }

  .lesson-preview__panel {
    --lesson-chrome: 9.5rem;
    width: 100%;
  }

  .lesson-preview__frame {
    height: 58vh;
    height: 58dvh;
  }

  .lesson-preview__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .lesson-preview__actions .btn {
    width: 100%;
  }

  .lesson-preview__skip {
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .lesson-preview,
  .lesson-preview__panel,
  .lesson-preview__close {
    transition: none;
  }

  .lesson-preview__panel {
    transform: none;
  }
}