/* ===============================
   SECTION BOOK MODERNE
=============================== */

.book-section {
  padding: 6rem 0;
  background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
  position: relative;
  overflow: hidden;
}

.section-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  position: relative;
  z-index: 2;
}

/* Header moderne */
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-badge {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: linear-gradient(135deg, #8a4cff, #ff8aff);
  color: white;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 20px rgba(138, 76, 255, 0.3);
}

.section-title {
  font-size: 3.5rem;
  font-weight: 800;
  color: white;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #ffffff, #e0e0e0);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 700px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Grid moderne */
.book-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 3rem;
}

.book-item {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  overflow: hidden;
  transition: all 0.4s ease;
  backdrop-filter: blur(10px);
  position: relative;
}

.book-item:hover {
  transform: translateY(-10px);
  border-color: rgba(138, 76, 255, 0.3);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

/* Media moderne */
.book-media {
  position: relative;
  width: 100%;
  height: 200px;
  overflow: hidden;
  border-radius: 20px 20px 0 0;
}

.book-media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
}

.book-media::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.3));
  z-index: 2;
}

.video-placeholder {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  z-index: 3;
  background: linear-gradient(135deg, 
    rgba(138, 76, 255, 0.2) 0%, 
    rgba(255, 138, 255, 0.15) 50%, 
    rgba(74, 158, 255, 0.1) 100%);
}

.placeholder-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
  opacity: 0.9;
  filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

.placeholder-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  margin-bottom: 0.5rem;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.placeholder-subtitle {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* Overlay moderne */
.media-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.4);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 3;
}

.book-media:hover .media-overlay {
  opacity: 1;
}

.play-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  background: rgba(138, 76, 255, 0.9);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.5rem;
  transition: all 0.3s ease;
  box-shadow: 0 8px 25px rgba(138, 76, 255, 0.4);
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  line-height: 1;
  padding: 0;
  margin: 0;
}

.play-btn i {
  display: block;
  margin: 0;
  padding: 0;
  line-height: 1;
  transform: translateX(-3px); /* Ajustement fin pour centrage parfait */
}

.play-btn:hover {
  background: rgba(138, 76, 255, 1);
  transform: translate(-50%, -50%) scale(1.1);
  box-shadow: 0 12px 35px rgba(138, 76, 255, 0.6);
}

.play-btn:hover i {
  transform: translateX(-3px); /* Ajustement fin pour centrage parfait au hover */
}

/* Bouton fullscreen moderne */
.video-fullscreen-btn {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: rgba(0, 0, 0, 0.8);
  color: white;
  border: none;
  border-radius: 12px;
  padding: 0.75rem;
  cursor: pointer;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  z-index: 4;
  backdrop-filter: blur(10px);
}

.video-fullscreen-btn:hover {
  background: rgba(138, 76, 255, 0.9);
  transform: scale(1.05);
}

/* Contenu moderne */
.book-content {
  padding: 2rem;
}

.book-category {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: linear-gradient(135deg, rgba(138, 76, 255, 0.2), rgba(255, 138, 255, 0.1));
  color: rgba(138, 76, 255, 0.9);
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.book-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  margin-bottom: 1rem;
  line-height: 1.3;
}

.book-description {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.book-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.tag {
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.9);
  border-radius: 15px;
  font-size: 0.8rem;
  font-weight: 500;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.2s ease;
}

.tag:hover {
  background: rgba(138, 76, 255, 0.2);
  border-color: rgba(138, 76, 255, 0.3);
}

/* CTA moderne */
.book-cta {
  text-align: center;
  margin-top: 4rem;
  padding: 3rem 2rem;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}

.book-cta p {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.btn-primary {
  display: inline-block;
  padding: 1.25rem 2.5rem;
  background: linear-gradient(135deg, #8a4cff, #ff8aff);
  color: white;
  text-decoration: none;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1.1rem;
  transition: all 0.3s ease;
  box-shadow: 0 8px 25px rgba(138, 76, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(138, 76, 255, 0.4);
}

/* Responsive moderne */
@media (max-width: 1024px) {
  .book-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }
}

@media (max-width: 768px) {
  .book-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .section-title {
    font-size: 2.5rem;
  }
  
  .book-media {
    height: 220px;
  }
  
  .placeholder-icon {
    font-size: 3rem;
  }
  
  .placeholder-title {
    font-size: 1.25rem;
  }
  
  /* DÉSACTIVER LES BOUTONS FULLSCREEN SUR MOBILE */
  .fullscreen-btn,
  .video-fullscreen-btn,
  .exit-fullscreen-btn,
  .exit-fullscreen-container {
    display: flex !important;
    visibility: visible !important;
    opacity: 0.8 !important;
    pointer-events: auto !important;
  }
}