/* Page livres KASC Research – layout horizontal image + texte */

/* Conteneur principal */
.books-page {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
  color: #e5e7eb;
  background: rgba(30, 46, 84,0.5);
}

/* HERO */

.books-hero-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.75rem;
  color: #9ca3af;
  margin-bottom: 0.5rem;
}

.books-hero-title {
  font-size: clamp(2rem, 3vw, 2.6rem);
  margin: 0 0 0.75rem;
  color: #f9fafb;
}

.books-hero-lead {
  max-width: 720px;
  font-size: 0.98rem;
  line-height: 1.6;
  color: #d1d5db;
  margin-bottom: 2rem;
}

.books-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1.2fr);
  gap: 1.5rem;
  align-items: flex-start;
}

.books-hero-highlight {
  padding: 1.25rem 1.5rem;
  border-radius: 1rem;
  background: radial-gradient(circle at top left, #1e293b, #020617);
  border: 1px solid #1f2937;
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.45);
}

.books-hero-highlight h2 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  color: #f9fafb;
}

.books-hero-highlight p {
  margin: 0;
  font-size: 0.9rem;
  color: #d1d5db;
}

.books-hero-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: flex-start;
}

.books-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8rem;
  color: #e5e7eb;
  border: 1px solid #374151;
  background: linear-gradient(to right, rgba(30,64,175,0.5), rgba(15,23,42,0.9));
  text-decoration: none;
  transition: transform 0.12s ease, box-shadow 0.12s ease, border-color 0.12s ease;
}

.books-chip:hover {
  transform: translateY(-1px);
  border-color: #60a5fa;
  box-shadow: 0 10px 30px rgba(37, 99, 235, 0.35);
}

/* SECTIONS */

.books-section {
  margin-top: 3rem;
}

.books-section-header h2 {
  margin: 0 0 0.4rem;
  font-size: 1.4rem;
  color: #f9fafb;
}

.books-section-header p {
  margin: 0 0 1.6rem;
  font-size: 0.95rem;
  color: #9ca3af;
}

/* LISTE DE LIVRES */

.book-list {
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}

/* LIGNE DE LIVRE (image à gauche, texte à droite) */

.book-row {
  display: flex;
  gap: 1.6rem;
  align-items: flex-start;
  padding: 1.4rem 1.6rem;
  border-radius: 1.1rem;
  background: radial-gradient(circle at top left, #111827, #020617);
  border: 1px solid #1f2937;
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.6);
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}

.book-row:hover {
  transform: translateY(-3px);
  border-color: #3b82f6;
  box-shadow: 0 22px 60px rgba(37, 99, 235, 0.5);
}

/* Couverture */

.book-cover {
  flex: 0 0 140px;
  max-width: 150px;
}

.book-cover img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 0.9rem;
  border: 1px solid #111827;
  background: #020617;
}

/* Contenu texte */

.book-content {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.book-category {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #a5b4fc;
}

.book-title {
  margin: 0;
  font-size: 1.05rem;
  color: #f9fafb;
}

.book-meta {
  margin: 0;
  font-size: 0.78rem;
  color: #9ca3af;
}

.book-summary {
  margin: 0.3rem 0 0;
  font-size: 0.87rem;
  line-height: 1.6;
  color: #d1d5db;
}

/* Points clés */

.book-takeaways {
  margin: 0.45rem 0 0;
  padding-left: 1.1rem;
  font-size: 0.82rem;
  line-height: 1.5;
  color: #d1d5db;
}

.book-takeaways li {
  margin: 0.15rem 0;
}

/* Liens */

.book-links {
  margin-top: 0.7rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.book-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  padding: 0.3rem 0.65rem;
  border-radius: 999px;
  color: #bfdbfe;
  border: 1px solid #1d4ed8;
  text-decoration: none;
  background: rgba(15, 23, 42, 0.95);
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.book-link:hover {
  background: #1d4ed8;
  border-color: #60a5fa;
  color: #f9fafb;
}

/* RESPONSIVE */

@media (max-width: 840px) {
  .books-hero-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 768px) {
  .book-row {
    flex-direction: column;
    padding: 1.2rem 1.1rem;
  }

  .book-cover {
    flex: 0 0 auto;
    max-width: 220px;
  }
}

@media (max-width: 640px) {
  .books-page {
    padding: 2.2rem 1.1rem 3rem;
  }
}