/* ============================================
   Librairie — Book Showcase
   Premium editorial bookshelf design
   ============================================ */

/* --- Page intro --- */
.librairie-intro {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}
.librairie-intro__count {
  font-family: var(--font-display);
  font-size: 0.88rem;
  color: var(--steel);
  font-weight: 500;
}
.librairie-intro__count strong {
  color: var(--ink);
  font-weight: 700;
}

/* --- Year group --- */
.year-group {
  margin-bottom: 3.5rem;
}
.year-group:last-of-type {
  margin-bottom: 0;
}
.year-label {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.75rem;
}
.year-label__text {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary-dark);
  white-space: nowrap;
}
.year-label__line {
  flex: 1;
  height: 1px;
  background: var(--border);
}
.year-label__badge {
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--steel);
  background: var(--bg-alt);
  padding: 0.25rem 0.65rem;
  border-radius: 100px;
  white-space: nowrap;
}

/* --- Books grid --- */
.books-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.75rem;
}

/* --- Book Card --- */
.book-card {
  display: flex;
  background: var(--card-bg, #ffffff);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.book-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--sh-lg);
  border-color: transparent;
}

/* Book spine / cover visual */
.book-card__cover {
  width: 100px;
  min-height: 180px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
/* Abstract book cover patterns */
.book-card__cover::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      135deg,
      transparent,
      transparent 8px,
      rgba(255,255,255,0.08) 8px,
      rgba(255,255,255,0.08) 9px
    );
}
.book-card__cover-icon {
  position: relative;
  z-index: 1;
  width: 36px;
  height: 36px;
  color: rgba(255,255,255,0.6);
  transition: transform var(--transition), color var(--transition);
}
.book-card:hover .book-card__cover-icon {
  transform: scale(1.12);
  color: rgba(255,255,255,0.85);
}
/* Spine accent line */
.book-card__cover::after {
  content: '';
  position: absolute;
  right: 0;
  top: 10%;
  height: 80%;
  width: 3px;
  background: rgba(255,255,255,0.15);
  border-radius: 2px;
}

/* Cover color variations */
.book-card__cover--1 { background: linear-gradient(160deg, #1e3a8a 0%, #1e40af 50%, #2563eb 100%); }
.book-card__cover--2 { background: linear-gradient(160deg, #164e63 0%, #0e7490 50%, #06b6d4 100%); }
.book-card__cover--3 { background: linear-gradient(160deg, #065f46 0%, #047857 50%, #10b981 100%); }
.book-card__cover--4 { background: linear-gradient(160deg, #7c2d12 0%, #c2410c 50%, #ea580c 100%); }
.book-card__cover--5 { background: linear-gradient(160deg, #581c87 0%, #7c3aed 50%, #8b5cf6 100%); }
.book-card__cover--6 { background: linear-gradient(160deg, #1e3a5f 0%, #334155 50%, #475569 100%); }
.book-card__cover--7 { background: linear-gradient(160deg, #831843 0%, #be185d 50%, #ec4899 100%); }
.book-card__cover--8 { background: linear-gradient(160deg, #713f12 0%, #a16207 50%, #ca8a04 100%); }

/* Book content */
.book-card__body {
  flex: 1;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
}
.book-card__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.3;
  margin: 0 0 0.6rem;
}
.book-card:hover .book-card__title {
  color: var(--primary-dark);
}
.book-card__author {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-style: italic;
  color: var(--teal);
  margin: 0 0 0.5rem;
  font-weight: 500;
}
.book-card__publisher {
  display: flex;
  align-items: flex-start;
  gap: 0.35rem;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--steel);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 0.75rem;
  line-height: 1.5;
}
.book-card__publisher svg {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
  margin-top: 0.15rem;
}
.book-card__desc {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.6;
  margin: 0;
  flex: 1;
}
/* Year pill (inside card, mobile fallback) */
.book-card__year {
  display: none;
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--steel);
  background: var(--bg-alt);
  padding: 0.15rem 0.5rem;
  border-radius: 100px;
  width: fit-content;
  margin-top: 0.75rem;
}

/* --- Highlight card (ouvrage fondateur) --- */
.book-card--highlight {
  border-color: var(--color-accent);
  border-width: 1.5px;
  position: relative;
  background: linear-gradient(135deg, rgba(45, 91, 215, 0.04) 0%, var(--white) 50%);
  box-shadow: 0 2px 12px rgba(45, 91, 215, 0.08);
}
.book-card--highlight:hover {
  box-shadow: var(--sh-lg), 0 4px 20px rgba(45, 91, 215, 0.12);
}
.book-card__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  margin-bottom: 0.5rem;
}
.book-card__badge svg {
  width: 12px;
  height: 12px;
}

/* --- CTA bottom --- */
.librairie-cta {
  text-align: center;
  padding: 3rem 0 0;
  margin-top: 1rem;
  border-top: 1px solid var(--border);
}
.librairie-cta p {
  font-size: 0.95rem;
  color: var(--muted);
  margin-bottom: 1rem;
}
.librairie-cta a {
  font-weight: 600;
  color: var(--teal);
  font-size: 0.9rem;
}
.librairie-cta a:hover {
  color: var(--primary-dark);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .books-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
  .book-card__cover {
    width: 80px;
    min-height: 160px;
  }
  .year-label__text {
    font-size: 1.35rem;
  }
  .year-group {
    margin-bottom: 2.5rem;
  }
}

@media (max-width: 480px) {
  .book-card {
    flex-direction: column;
  }
  .book-card__cover {
    width: 100%;
    min-height: 80px;
    height: 80px;
  }
  .book-card__cover::after {
    /* Move spine to bottom on stacked layout */
    right: auto;
    bottom: 0;
    top: auto;
    left: 10%;
    width: 80%;
    height: 3px;
  }
  .book-card__cover-icon {
    width: 28px;
    height: 28px;
  }
  .book-card__body {
    padding: 1.25rem;
  }
  .book-card__year {
    display: inline-block;
  }
  .librairie-intro {
    flex-direction: column;
    gap: 0.5rem;
  }
}

@media (max-width: 380px) {
  .book-card__title {
    font-size: 0.95rem;
  }
  .book-card__body {
    padding: 1rem;
  }
  .book-card__cover {
    height: 65px;
    min-height: 65px;
  }
}

/* ============================================
   DARK MODE
   ============================================ */
@media (prefers-color-scheme: dark) {
  .book-card {
    background: var(--card-bg);
    border-color: var(--border);
  }
  .book-card:hover {
    border-color: transparent;
  }
  .book-card__title {
    color: var(--ink);
  }
  .book-card:hover .book-card__title {
    color: var(--cyan);
  }
  .book-card__author {
    color: var(--sky);
  }
  .book-card__desc {
    color: var(--muted);
  }
  .year-label__text {
    color: var(--ink);
  }
  .year-label__badge {
    background: var(--card-bg);
    color: var(--steel);
  }
  .book-card--highlight {
    border-color: var(--color-accent);
    background: linear-gradient(135deg, rgba(45, 91, 215, 0.06) 0%, var(--card-bg) 50%);
  }
  .book-card__year {
    background: var(--card-bg);
  }
}