/* ==================== */
/* Book Carousel        */
/* Midnight Gallery     */
/* ==================== */

.book-carousel-section {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-primary);
  overflow: hidden;
}

/* Subtle spotlight effect */
.book-carousel-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-radial-spotlight);
  pointer-events: none;
  z-index: 1;
}

/* ==================== */
/* Book Container       */
/* ==================== */

.book-container {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 2;
  perspective: 2000px;
}

.book {
  position: relative;
  width: 90%;
  max-width: 1400px;
  height: 75vh;
  max-height: 800px;
  transform-style: preserve-3d;
}

/* ==================== */
/* Individual Pages     */
/* ==================== */

.page {
  position: absolute;
  width: 100%;
  height: 100%;
  left: 0;
  transform-origin: left center;
  transform-style: preserve-3d;
  transition: transform var(--duration-slower) var(--ease-smooth);
  cursor: pointer;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  box-shadow: var(--shadow-card);
}

/* z-index stacking for pages */
.page[data-page="1"] { z-index: 17; }
.page[data-page="2"] { z-index: 16; }
.page[data-page="3"] { z-index: 15; }
.page[data-page="4"] { z-index: 14; }
.page[data-page="5"] { z-index: 13; }
.page[data-page="6"] { z-index: 12; }
.page[data-page="7"] { z-index: 11; }
.page[data-page="8"] { z-index: 10; }
.page[data-page="9"] { z-index: 9; }
.page[data-page="10"] { z-index: 8; }
.page[data-page="11"] { z-index: 7; }
.page[data-page="12"] { z-index: 6; }
.page[data-page="13"] { z-index: 5; }
.page[data-page="14"] { z-index: 4; }
.page[data-page="15"] { z-index: 3; }
.page[data-page="16"] { z-index: 2; }
.page[data-page="17"] { z-index: 1; }

.page.active {
  z-index: 20;
}

.page.turning {
  transform: rotateY(-180deg);
  z-index: 25;
}

.page.turned {
  transform: rotateY(-180deg);
  pointer-events: none;
  z-index: 0;
}

/* ==================== */
/* Page Content Overlay */
/* ==================== */

.page-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-10) var(--space-12);
  background: var(--gradient-overlay);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 40%;
  z-index: 2;
  opacity: 1;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.page.turning .page-content,
.page.turned .page-content {
  opacity: 0;
}

.page-content h1 {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: var(--font-normal);
  color: var(--color-white);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  margin-bottom: var(--space-3);
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.page-content p {
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  color: var(--neutral-300);
  line-height: var(--leading-relaxed);
  max-width: 500px;
}

.page-content .btn {
  margin-top: var(--space-6);
  align-self: flex-start;
}

/* ==================== */
/* Navigation Controls  */
/* ==================== */

.book-controls {
  position: fixed;
  bottom: var(--space-10);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  z-index: var(--z-fixed);
  width: 90%;
  max-width: 600px;
}

/* Progress Bar */
.progress-container {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-3);
}

.progress-bar {
  width: 100%;
  height: 2px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  position: relative;
  overflow: hidden;
}

.progress-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: var(--accent-gold);
  border-radius: var(--radius-full);
  transition: width var(--duration-normal) var(--ease-out);
}

.progress-indicator {
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 10px;
  height: 10px;
  background: var(--accent-gold);
  border-radius: var(--radius-full);
  box-shadow: 0 0 10px var(--accent-gold);
  transition: left var(--duration-normal) var(--ease-out);
}

.page-counter {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--text-tertiary);
  letter-spacing: var(--tracking-wider);
}

/* Controls Row */
.controls-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

/* Book Now Button with Shimmer */
.btn-book-now {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: var(--font-bold);
  color: var(--neutral-950);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-full);
  background: linear-gradient(
    110deg,
    #B8941F 0%,
    #D4AF37 25%,
    #F5D76E 50%,
    #D4AF37 75%,
    #B8941F 100%
  );
  background-size: 200% 100%;
  animation: shimmer 3s ease-in-out infinite;
  box-shadow:
    0 4px 15px rgba(201, 169, 98, 0.4),
    0 0 30px rgba(201, 169, 98, 0.2);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  transition: transform var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.btn-book-now:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow:
    0 8px 25px rgba(201, 169, 98, 0.5),
    0 0 40px rgba(201, 169, 98, 0.3);
}

.btn-book-now:active {
  transform: translateY(-1px) scale(1);
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

/* Navigation Buttons */
.nav-buttons {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.book-prev,
.book-next {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  padding: var(--space-3) var(--space-4);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  backdrop-filter: blur(10px);
  transition: all var(--duration-fast) var(--ease-out);
}

.book-prev:hover,
.book-next:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, 0.2);
}

.book-prev:disabled,
.book-next:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.book-prev svg,
.book-next svg {
  width: 16px;
  height: 16px;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: var(--space-32);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-tertiary);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  animation: bounce 2s infinite;
}

.scroll-indicator svg {
  width: 20px;
  height: 20px;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-8px);
  }
  60% {
    transform: translateX(-50%) translateY(-4px);
  }
}

/* ==================== */
/* Responsive Design    */
/* ==================== */

@media (max-width: 1024px) {
  .book {
    width: 95%;
    height: 65vh;
  }

  .page-content {
    padding: var(--space-8);
  }

  .page-content h1 {
    font-size: var(--text-3xl);
  }

  .page-content p {
    font-size: var(--text-base);
  }
}

@media (max-width: 768px) {
  .book {
    width: 100%;
    height: 60vh;
    border-radius: 0;
  }

  .page {
    border-radius: 0;
  }

  .page-content {
    padding: var(--space-6);
    min-height: 50%;
  }

  .page-content h1 {
    font-size: var(--text-2xl);
  }

  .page-content p {
    font-size: var(--text-sm);
  }

  .book-controls {
    bottom: var(--space-6);
    gap: var(--space-4);
  }

  .controls-row {
    flex-wrap: wrap;
    gap: var(--space-4);
  }

  .btn-book-now {
    order: -1;
    width: 100%;
    justify-content: center;
    padding: var(--space-4) var(--space-6);
    font-size: var(--text-sm);
  }

  .nav-buttons {
    width: 100%;
    justify-content: space-between;
  }

  .book-prev,
  .book-next {
    padding: var(--space-3) var(--space-5);
  }

  .scroll-indicator {
    display: none;
  }
}

@media (max-width: 480px) {
  .book {
    height: 55vh;
  }

  .page-content h1 {
    font-size: var(--text-xl);
  }

  .page-content p {
    font-size: var(--text-sm);
    display: none;
  }

  .book-prev span,
  .book-next span {
    display: none;
  }

  .book-prev,
  .book-next {
    padding: var(--space-3);
  }
}

/* ==================== */
/* Page Turn Animation  */
/* ==================== */

@keyframes pageTurn {
  0% {
    transform: perspective(2000px) rotateY(0deg);
  }
  100% {
    transform: perspective(2000px) rotateY(-180deg);
  }
}

@keyframes pageIntro {
  0% {
    opacity: 0;
    transform: scale(0.95);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

.page.active:not(.turning):not(.turned) {
  animation: pageIntro var(--duration-slow) var(--ease-out);
}

/* ==================== */
/* Reduced Motion       */
/* ==================== */

@media (prefers-reduced-motion: reduce) {
  .page {
    transition: transform var(--duration-fast) var(--ease-out);
  }

  .scroll-indicator {
    animation: none;
  }

  .page.active:not(.turning):not(.turned) {
    animation: none;
  }
}