/* =====================================================================
   BOOKS GRID - UNIQUE NAMESPACED CLASSES
   Using 'srbs-' prefix to prevent conflicts
   
   FIXES:
   - Removed all .srbs-book-badge styles (edition badge removed)
   - Removed all .srbs-book-actions and .srbs-book-btn styles (buttons removed)
   - Kept clean metadata display (Subject, Author only)
   ===================================================================== */

.srbs-books-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--srbs-space-lg);
  animation: srbs-fadeIn 0.5s var(--srbs-transition-smooth);
}

/* =====================================================================
   BOOK CARD (.srbs-book-card)
   ===================================================================== */
.srbs-book-card {
  background: var(--srbs-color-white);
  border-radius: var(--srbs-radius-lg);
  overflow: hidden;
  box-shadow: var(--srbs-shadow-md);
  transition: all var(--srbs-transition-base);
  display: flex;
  flex-direction: column;
  height: 100%;
  cursor: pointer;
  transform: translateY(0);
  opacity: 1;
  animation: srbs-slideInUp 0.5s var(--srbs-transition-smooth);
  border: 1px solid var(--pearl);
}

.srbs-book-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--srbs-shadow-xl);
}

.srbs-book-card:active {
  transform: translateY(-6px);
}

/* Card Structure */
.srbs-book-image {
  position: relative;
  width: 100%;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--pearl);
    max-height: 200px;
}

.srbs-book-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform var(--srbs-transition-smooth);
  display: block;
}

.srbs-book-card:hover .srbs-book-image img {
  transform: scale(1.08);
}

/* Image Fallback (for missing images) */
.srbs-book-image.srbs-fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(15, 81, 50, 0.3);
  font-size: 2rem;
}

/* Card Body */
.srbs-book-body {
  padding: var(--srbs-space-md);
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: var(--srbs-space-sm);
}

/* Book Title */
.srbs-book-title {
  font-size: 1rem;
  line-height: 1.3;
  margin: 0;
  transition: color var(--srbs-transition-fast);
  color: #33291F;
}


/* Metadata - Subject and Author only */
.srbs-book-meta {
  display: flex;
  flex-direction: column;
  gap: var(--srbs-space-xs);
  font-size: 0.9rem;
}

.srbs-book-meta-item {
  display: flex;
  gap: var(--srbs-space-sm);
  align-items: flex-start;
}

.srbs-book-meta-label {
  color: var(--rose-dark);
  width: 70px;
  flex-shrink: 0;
}

.srbs-book-meta-value {
  color: var(--srbs-color-dark-gray);
  font-weight: 500;
}

/* =====================================================================
   RESPONSIVE GRID
   ===================================================================== */

/* Tablet: 2 columns */
@media (max-width: 1023px) {
  .srbs-books-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--srbs-space-md);
  }
}

/* Mobile: 1 column */
@media (max-width: 640px) {
  .srbs-books-grid {
    grid-template-columns: 1fr;
    gap: var(--srbs-space-md);
  }
}

/* =====================================================================
   GRID STATE TRANSITIONS
   ===================================================================== */

/* Staggered entry animation */
.srbs-book-card {
  animation-fill-mode: both;
}

.srbs-book-card:nth-child(1) { animation-delay: 0s; }
.srbs-book-card:nth-child(2) { animation-delay: 0.05s; }
.srbs-book-card:nth-child(3) { animation-delay: 0.1s; }
.srbs-book-card:nth-child(4) { animation-delay: 0.15s; }
.srbs-book-card:nth-child(5) { animation-delay: 0.2s; }
.srbs-book-card:nth-child(6) { animation-delay: 0.25s; }
.srbs-book-card:nth-child(7) { animation-delay: 0.3s; }
.srbs-book-card:nth-child(8) { animation-delay: 0.35s; }

/* Fade out on category change */
.srbs-books-grid.srbs-exiting .srbs-book-card {
  animation: srbs-fadeOut 0.3s var(--srbs-transition-base) forwards;
}

@keyframes srbs-fadeOut {
  to {
    opacity: 0;
    transform: translateY(10px);
  }
}

/* =====================================================================
   LOADING STATE (.srbs-skeleton)
   ===================================================================== */
.srbs-book-card.srbs-skeleton {
  pointer-events: none;
}

.srbs-book-image.srbs-skeleton::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  animation: srbs-shimmer 2s infinite;
}

.srbs-book-title.srbs-skeleton,
.srbs-book-meta-value.srbs-skeleton {
  background: var(--srbs-color-medium-gray);
  color: transparent;
  border-radius: var(--srbs-radius-sm);
  animation: srbs-shimmer 2s infinite;
}

.srbs-book-title.srbs-skeleton {
  height: 1.2em;
  margin-bottom: 0.5em;
}

.srbs-book-meta-value.srbs-skeleton {
  height: 0.9em;
  margin-bottom: 0.3em;
  width: 80%;
}

@keyframes srbs-shimmer {
  0% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
  100% {
    opacity: 1;
  }
}

/* =====================================================================
   ACCESSIBILITY
   ===================================================================== */
.srbs-book-card:focus-within {
  outline: 2px solid var(--srbs-color-gold);
  outline-offset: -2px;
}

/* High contrast mode */
@media (prefers-contrast: more) {
  .srbs-book-card {
    border: 1px solid var(--srbs-color-medium-gray);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .srbs-book-card,
  .srbs-book-image img {
    transition: none;
    animation: none;
  }
}

/* =====================================================================
   PRINT STYLES
   ===================================================================== */
@media print {
  .srbs-books-grid {
    gap: 1cm;
  }
}