.spellbook {
  --parchment: #f4e4bc;
  --parchment-dark: #d4c4a0;
  --leather: #8b4513;
  --leather-dark: #5c3010;
  --gold: #d4a574;
  --gold-light: #f0d090;
  --ink: #2c1810;
  --magic: #9b59b6;
  --magic-glow: rgba(155, 89, 182, 0.4);

  position: relative;
  display: flex;
  align-items: center;
  padding: 1rem;
  background: linear-gradient(135deg, #1a0f0a 0%, #2d1810 100%);
  border-radius: 0.5rem;
  box-shadow: inset 0 0 3rem rgba(0, 0, 0, 0.5);
}

.bookCover {
  position: relative;
  display: flex;
}

.spine {
  position: absolute;
  left: -8px;
  top: 0;
  bottom: 0;
  width: 12px;
  background: linear-gradient(90deg, var(--leather-dark) 0%, var(--leather) 50%, var(--leather-dark) 100%);
  border-radius: 4px 0 0 4px;
  box-shadow: inset -2px 0 4px rgba(0, 0, 0, 0.4);
}

.spine::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 2px;
  right: 2px;
  height: 60%;
  transform: translateY(-50%);
  background: repeating-linear-gradient(
    180deg,
    transparent,
    transparent 8px,
    var(--leather-dark) 8px,
    var(--leather-dark) 10px
  );
  border-radius: 2px;
}

.pages {
  position: relative;
  display: flex;
  gap: 0.25rem;
  padding: 0.5rem 0.5rem 0.5rem 1rem;
  background: linear-gradient(180deg, var(--parchment) 0%, var(--parchment-dark) 100%);
  border-radius: 0 0.5rem 0.5rem 0;
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.4);
}

.tab {
  --index: 0;

  position: relative;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  background: linear-gradient(180deg, var(--parchment) 0%, var(--parchment-dark) 100%);
  border: none;
  border-radius: 0 0.25rem 0.25rem 0;
  cursor: pointer;
  transform-origin: left center;
  transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  animation: tabEnter 0.5s ease-out backwards;
  animation-delay: calc(var(--index) * 0.1s);
}

@keyframes tabEnter {
  from {
    opacity: 0;
    transform: rotateY(-30deg) translateX(-20px);
  }
  to {
    opacity: 1;
    transform: rotateY(0) translateX(0);
  }
}

.tab:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(155, 89, 182, 0.3);
}

.tab:active {
  transform: translateY(0);
}

.tab.active {
  background: linear-gradient(180deg, var(--gold-light) 0%, var(--gold) 100%);
  transform: translateY(-4px);
  box-shadow: 0 6px 20px rgba(212, 165, 116, 0.5), 0 0 30px var(--magic-glow);
  z-index: 2;
}

.pageEdge {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: repeating-linear-gradient(
    180deg,
    var(--parchment-dark),
    var(--parchment-dark) 2px,
    var(--parchment) 2px,
    var(--parchment) 4px
  );
  border-radius: 2px 0 0 2px;
}

.content {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.icon {
  font-size: 1.25rem;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
}

.name {
  font-family: 'Times New Roman', serif;
  font-size: 0.875rem;
  font-weight: 600;
  font-style: italic;
  color: var(--ink);
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.3);
  letter-spacing: 0.05em;
}

.tab.active .name {
  color: var(--leather-dark);
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.5);
}

.pageMarker {
  position: absolute;
  top: 4px;
  right: 6px;
  width: 8px;
  height: 8px;
  background: var(--ink);
  border-radius: 50%;
  opacity: 0.3;
  transition: all 0.3s ease;
}

.tab.active .pageMarker {
  background: var(--magic);
  opacity: 1;
  box-shadow: 0 0 8px var(--magic);
  animation: pulseMarker 2s ease-in-out infinite;
}

@keyframes pulseMarker {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 0 8px var(--magic);
  }
  50% {
    transform: scale(1.2);
    box-shadow: 0 0 16px var(--magic), 0 0 24px var(--magic-glow);
  }
}

.bookCoverFront {
  position: absolute;
  right: -4px;
  top: 0;
  bottom: 0;
  width: 8px;
  background: linear-gradient(90deg, var(--leather) 0%, var(--leather-dark) 100%);
  border-radius: 0 4px 4px 0;
  box-shadow: inset 2px 0 4px rgba(0, 0, 0, 0.3);
}

.magicDust {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(2px 2px at 20% 30%, var(--magic-glow) 50%, transparent 50%),
    radial-gradient(2px 2px at 60% 70%, var(--magic-glow) 50%, transparent 50%),
    radial-gradient(1px 1px at 50% 50%, var(--magic-glow) 50%, transparent 50%),
    radial-gradient(1px 1px at 80% 10%, var(--magic-glow) 50%, transparent 50%),
    radial-gradient(1px 1px at 90% 60%, var(--magic-glow) 50%, transparent 50%),
    radial-gradient(2px 2px at 33% 80%, var(--magic-glow) 50%, transparent 50%),
    radial-gradient(1px 1px at 15% 90%, var(--magic-glow) 50%, transparent 50%);
  background-size: 200% 200%;
  opacity: 0.6;
  animation: dustFloat 20s ease-in-out infinite;
}

@keyframes dustFloat {
  0%, 100% {
    background-position: 0% 0%, 100% 100%, 50% 50%, 80% 10%, 90% 60%, 33% 80%, 15% 90%;
  }
  50% {
    background-position: 100% 100%, 0% 0%, 50% 60%, 70% 30%, 95% 80%, 40% 20%, 25% 10%;
  }
}