/* ============================================
   BOOKS PAGE - Dr. Cynthia King Bolden
   Premium Portfolio | Mobile-First
   ============================================ */

/* ---------- Books Section ---------- */
.books-section {
  background: var(--color-bg);
  position: relative;
  overflow: hidden;
}

.books-section::before {
  content: '';
  position: absolute;
  top: 10%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--color-gold-glow) 0%, transparent 70%);
  opacity: 0.3;
  pointer-events: none;
}

/* ---------- Books Grid ---------- */
.books-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

@media (min-width: 768px) {
  .books-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
  }
}

@media (min-width: 1024px) {
  .books-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
  }
}

/* ---------- Book Card (Glass container) ---------- */
.book-card {
  padding: var(--space-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  cursor: default;
}

.book-card.glass-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.1);
}

/* ---------- CSS Book Cover ---------- */
.book-cover {
  position: relative;
  width: 100%;
  aspect-ratio: 2 / 3;
  border-radius: 2px 8px 8px 2px;
  overflow: hidden;
  box-shadow:
    -4px 0 8px rgba(0, 0, 0, 0.08) inset,
    4px 4px 16px rgba(0, 0, 0, 0.12),
    1px 1px 4px rgba(0, 0, 0, 0.08);
  transition: box-shadow var(--transition-medium);
}

.book-card:hover .book-cover {
  box-shadow:
    -4px 0 8px rgba(0, 0, 0, 0.08) inset,
    6px 8px 24px rgba(0, 0, 0, 0.18),
    1px 1px 4px rgba(0, 0, 0, 0.1);
}

.book-cover--image {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.4rem;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92) 0%, rgba(239, 232, 221, 0.92) 100%);
}

.book-cover__image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  border-radius: 4px 6px 6px 4px;
  background: rgba(255, 255, 255, 0.78);
}

/* Spine effect */
.book-cover__spine {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 6px;
  background: linear-gradient(
    90deg,
    rgba(0, 0, 0, 0.2) 0%,
    rgba(0, 0, 0, 0.05) 40%,
    rgba(255, 255, 255, 0.1) 60%,
    rgba(0, 0, 0, 0.03) 100%
  );
  z-index: 2;
}

/* Inner content */
.book-cover__inner {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.25rem 0.875rem;
  text-align: center;
  z-index: 1;
}

/* Subtle decorative border inset */
.book-cover__inner::before {
  content: '';
  position: absolute;
  inset: 8px 10px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 2px;
  pointer-events: none;
}

/* Ornament */
.book-cover__ornament {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.5);
  margin-bottom: 0.5rem;
  letter-spacing: 0.3em;
}

/* Book title */
.book-cover__title {
  font-family: var(--font-display);
  font-size: clamp(0.75rem, 1.6vw, 1rem);
  font-weight: 700;
  line-height: 1.3;
  color: #fff;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
  max-width: 100%;
  word-wrap: break-word;
}

/* Cover divider line */
.book-cover__divider {
  width: 30px;
  height: 1px;
  background: rgba(255, 255, 255, 0.35);
  margin: 0.5rem 0;
}

/* Author name */
.book-cover__author {
  font-family: var(--font-accent);
  font-size: clamp(0.55rem, 1.1vw, 0.75rem);
  font-style: italic;
  color: rgba(255, 255, 255, 0.8);
  letter-spacing: 0.02em;
}

/* Contributing author badge */
.book-cover__badge {
  display: inline-block;
  margin-top: 0.4rem;
  padding: 0.15rem 0.5rem;
  font-family: var(--font-body);
  font-size: 0.55rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  backdrop-filter: blur(4px);
}

/* ---------- Cover Color Variants ---------- */

/* Gold */
.book-cover--gold {
  background: linear-gradient(160deg, #C4963A 0%, #8B6914 40%, #A67C1A 70%, #D4AF37 100%);
}

/* Navy */
.book-cover--navy {
  background: linear-gradient(160deg, #2C3E6B 0%, #1A1A2E 40%, #263256 70%, #3A4F82 100%);
}

/* Rose */
.book-cover--rose {
  background: linear-gradient(160deg, #C2928A 0%, #8B6B65 40%, #A07872 70%, #D4A49C 100%);
}

/* Sage */
.book-cover--sage {
  background: linear-gradient(160deg, #8FA88F 0%, #5C725C 40%, #728A72 70%, #A3BCA3 100%);
}

/* Plum */
.book-cover--plum {
  background: linear-gradient(160deg, #9B7EA8 0%, #6B4F78 40%, #836A90 70%, #B098BC 100%);
}

/* Cream */
.book-cover--cream {
  background: linear-gradient(160deg, #C8B896 0%, #8F7E5E 40%, #A89470 70%, #D4C8A8 100%);
}

/* Teal */
.book-cover--teal {
  background: linear-gradient(160deg, #6B9B9B 0%, #3D6B6B 40%, #528585 70%, #7EB0B0 100%);
}

/* Gold Dark */
.book-cover--gold-dark {
  background: linear-gradient(160deg, #A6872B 0%, #6B5518 40%, #8A6F20 70%, #BFA040 100%);
}

/* Navy Light */
.book-cover--navy-light {
  background: linear-gradient(160deg, #4A5A80 0%, #2A3550 40%, #3A4A6A 70%, #5C6E96 100%);
}

/* Rose Dark */
.book-cover--rose-dark {
  background: linear-gradient(160deg, #A07068 0%, #6B4840 40%, #885850 70%, #B88880 100%);
}

/* Sage Dark */
.book-cover--sage-dark {
  background: linear-gradient(160deg, #6B8060 0%, #485840 40%, #5A6E50 70%, #809870 100%);
}

/* ---------- CTA Section ---------- */
.books-cta {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-warm) 100%);
}

.books-cta__card {
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
}

.books-cta__card::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--color-gold-glow) 0%, transparent 70%);
  opacity: 0.5;
  pointer-events: none;
}

/* ---------- Responsive Refinements ---------- */
@media (max-width: 480px) {
  .book-card {
    padding: var(--space-xs);
  }

  .book-cover__inner {
    padding: 1rem 0.625rem;
  }

  .book-cover__inner::before {
    inset: 5px 6px;
  }

  .book-cover__ornament {
    font-size: 0.75rem;
    margin-bottom: 0.35rem;
  }

  .book-cover__title {
    font-size: 0.7rem;
  }

  .book-cover__divider {
    width: 20px;
    margin: 0.35rem 0;
  }

  .book-cover__author {
    font-size: 0.5rem;
  }
}

@media (min-width: 1200px) {
  .book-cover__title {
    font-size: 1.05rem;
  }

  .book-cover__author {
    font-size: 0.8rem;
  }

  .book-cover__ornament {
    font-size: 1.1rem;
  }
}