/* ===== Light, restrained motion system ===== */

@media (prefers-reduced-motion: no-preference) {
  .shelf-book {
    animation: settle 0.7s cubic-bezier(.22,1,.36,1) backwards;
  }
  @keyframes settle {
    from { opacity: 0; transform: translateY(24px) rotate(0deg); }
  }

  .reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  .reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .shelf-book, .reveal { animation: none !important; opacity: 1 !important; transform: none !important; }
}

/* Book spine hover — gently "pulls out" like taking it off a shelf */
.spine {
  transform-origin: bottom center;
}
.spine:hover {
  transform: translateY(-18px) rotate(-2deg);
}

/* Product card hover */
.book-card > div:first-child {
  transition: transform 0.35s cubic-bezier(.22,1,.36,1), box-shadow 0.35s ease;
}
.book-card:hover > div:first-child {
  transform: translateY(-6px) rotate(-1deg);
  box-shadow: 0 18px 30px -12px rgba(46, 26, 15, 0.35);
}

/* Shelf horizontal scroll — hide scrollbar but keep it usable */
.spine-shelf {
  scrollbar-width: thin;
  scrollbar-color: #e6000055 transparent;
}
.spine-shelf::-webkit-scrollbar { height: 6px; }
.spine-shelf::-webkit-scrollbar-thumb { background: #e6000055; border-radius: 999px; }

/* Visible keyboard focus everywhere */
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid #990000;
  outline-offset: 2px;
}

/* ===== Extra motion utilities for a more modern, lively feel ===== */
@media (prefers-reduced-motion: no-preference) {
  .float-slow { animation: floatY 6s ease-in-out infinite; }
  .float-slow-delay { animation: floatY 6s ease-in-out infinite; animation-delay: 1.5s; }
  @keyframes floatY {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-14px); }
  }

  .pulse-soft { animation: pulseSoft 2.5s ease-in-out infinite; }
  @keyframes pulseSoft {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.06); }
  }

  .spin-slow { animation: spinSlow 20s linear infinite; }
  @keyframes spinSlow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
  }

  .grow-in {
    opacity: 0;
    transform: scale(0.94) translateY(10px);
    transition: opacity 0.5s ease, transform 0.5s cubic-bezier(.22,1,.36,1);
  }
  .grow-in.is-visible { opacity: 1; transform: scale(1) translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .float-slow, .float-slow-delay, .pulse-soft, .spin-slow { animation: none !important; }
  .grow-in { opacity: 1 !important; transform: none !important; }
}

/* Blob decorative shape */
.deco-blob {
  border-radius: 42% 58% 65% 35% / 45% 40% 60% 55%;
}

/* Gradient CTA button shimmer on hover */
.btn-shimmer {
  position: relative;
  overflow: hidden;
}
.btn-shimmer::after {
  content: '';
  position: absolute;
  top: 0; left: -60%;
  width: 40%; height: 100%;
  background: linear-gradient(120deg, transparent, rgba(255,255,255,0.35), transparent);
  transform: skewX(-20deg);
  transition: left 0.6s ease;
}
.btn-shimmer:hover::after { left: 130%; }