/**
 * Book Showcase - Книжкова виставка
 * 
 * Дизайн натхненний Йозефом Мюллер-Брокманом
 * Пропорції базуються на послідовності Фібоначчі
 * "Сітка — це дисципліна. Простота — це елегантність."
 * 
 * Кольори: #BE003C (primary), #1a1a2e (dark), #f8f9fa (light)
 * Пропорції: 1, 2, 3, 5, 8, 13, 21, 34, 55, 89...
 */

/* ===== Базові змінні ===== */
:root {
  --showcase-primary: #BE003C;
  --showcase-primary-hover: #9A0031;
  --showcase-dark: #1a1a2e;
  --showcase-darker: #0f0f1a;
  --showcase-light: #f8f9fa;
  --showcase-text-dark: #1a1a2e;
  --showcase-text-light: #ffffff;
  --showcase-text-muted: rgba(255, 255, 255, 0.75);
  --showcase-gold: #D4AF37;
  --showcase-shadow: rgba(0, 0, 0, 0.25);
  
  /* Фібоначчі spacing */
  --fib-1: 1px;
  --fib-2: 2px;
  --fib-3: 3px;
  --fib-5: 5px;
  --fib-8: 8px;
  --fib-13: 13px;
  --fib-21: 21px;
  --fib-34: 34px;
  --fib-55: 55px;
  --fib-89: 89px;
}

/* ===== Контейнер ===== */
.book-showcase-wrapper {
  width: 100%;
  margin-bottom: var(--fib-34);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
}

.book-showcase-viewport {
  position: relative;
  overflow: hidden;
}

.book-showcase-container {
  width: 100%;
}

/* ===== Слайд ===== */
.book-showcase-slide {
  min-height: 450px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  padding: var(--fib-55) 0;
  position: relative;
}

/* Без оверлея — чистий дизайн */

.book-showcase-content {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--fib-21);
  position: relative;
  z-index: 1;
  background: transparent !important;
}

/* ===== Заголовок — чистий швейцарський стиль ===== */
.book-showcase-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: var(--fib-34);
  padding-bottom: var(--fib-13);
  border-bottom: var(--fib-2) solid rgba(255, 255, 255, 0.2);
  position: relative;
}

/* Анімована лінія під заголовком */
.book-showcase-header::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--showcase-primary);
  transition: width 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}

.book-showcase-slide:hover .book-showcase-header::after {
  width: 120px;
}

.book-showcase-title {
  font-size: var(--fib-34);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #ffffff;
  margin: 0;
  text-transform: none;
}

.book-showcase-title a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.3s ease;
}

.book-showcase-title a:hover {
  opacity: 0.85;
}

.book-showcase-more {
  color: rgba(255, 255, 255, 0.85);
  font-size: var(--fib-13);
  font-weight: 500;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--fib-8);
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--fib-5) var(--fib-13);
  border-radius: var(--fib-21);
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(4px);
}

.book-showcase-more:hover {
  color: #ffffff;
  background: var(--showcase-primary);
  gap: var(--fib-13);
  transform: translateX(3px);
}

.book-showcase-more i {
  font-size: 12px;
  transition: transform 0.3s ease;
}

.book-showcase-more:hover i {
  transform: translateX(3px);
}

/* ===== Сітка книг — Фібоначчі ритм ===== */
.book-showcase-books {
  display: flex;
  gap: var(--fib-21);
  justify-content: center;
  flex-wrap: wrap;
  background: #ffffff;
  padding: var(--fib-55) var(--fib-34);
  margin: 0 -100vw;
  padding-left: calc(100vw - 50%);
  padding-right: calc(100vw - 50%);
}

.book-showcase-item {
  position: relative;
  width: 160px;
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.book-showcase-item:hover {
  transform: translateY(-8px);
}

.book-showcase-link {
  display: block;
  text-decoration: none;
}

/* ===== Обкладинка книги ===== */
.book-showcase-cover {
  position: relative;
  overflow: visible;
  transition: transform 0.5s cubic-bezier(0.23, 1, 0.32, 1);
  background: transparent;
  /* Тонка тінь самої книги */
  filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.25));
}

.book-showcase-item:hover .book-showcase-cover {
  transform: translateY(-5px) scale(1.02);
  filter: drop-shadow(0 20px 30px rgba(0, 0, 0, 0.35));
}

.book-showcase-img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 2/3;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.23, 1, 0.32, 1);
}

.book-showcase-item:hover .book-showcase-img {
  /* Масштаб через cover */
}

/* ===== Знижка — акцентний колір ===== */
.book-showcase-discount {
  position: absolute;
  top: var(--fib-8);
  right: var(--fib-8);
  background: linear-gradient(135deg, var(--showcase-primary) 0%, #ff1a5c 100%);
  color: var(--showcase-text-light);
  font-size: 11px;
  font-weight: 700;
  padding: var(--fib-5) var(--fib-8);
  border-radius: var(--fib-13);
  letter-spacing: 0.02em;
  box-shadow: 0 4px 12px rgba(190, 0, 60, 0.5);
  z-index: 2;
  animation: pulseDiscount 2s ease-in-out infinite;
}

@keyframes pulseDiscount {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* ===== Інформація про книгу ===== */
.book-showcase-info {
  padding: var(--fib-13) var(--fib-5) var(--fib-5);
  text-align: center;
}

.book-showcase-name {
  display: block;
  color: var(--showcase-text-dark);
  font-size: var(--fib-13);
  font-weight: 600;
  line-height: 1.35;
  margin-bottom: var(--fib-8);
  height: 36px;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  transition: color 0.3s ease;
}

.book-showcase-item:hover .book-showcase-name {
  color: var(--showcase-primary);
}

/* ===== Ціни — чіткий контраст ===== */
.book-showcase-price {
  font-size: var(--fib-13);
  line-height: 1.4;
}

.book-showcase-price .price-old {
  color: #999;
  text-decoration: line-through;
  font-size: 12px;
  margin-right: var(--fib-5);
  font-weight: 400;
}

.book-showcase-price .price-new {
  color: var(--showcase-primary);
  font-weight: 700;
  font-size: 16px;
}

.book-showcase-price .price-regular {
  color: var(--showcase-text-dark);
  font-weight: 600;
}

/* ===== Кнопка кошика ===== */
.book-showcase-cart {
  position: absolute;
  bottom: 75px;
  left: 50%;
  transform: translateX(-50%) translateY(var(--fib-21)) scale(0.8);
  opacity: 0;
  background: var(--showcase-primary);
  color: var(--showcase-text-light);
  border: none;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.23, 1, 0.32, 1);
  box-shadow: 0 4px 20px rgba(190, 0, 60, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
}

.book-showcase-cart i {
  font-size: 18px;
  transition: transform 0.3s ease;
}

.book-showcase-item:hover .book-showcase-cart {
  opacity: 1;
  transform: translateX(-50%) translateY(0) scale(1);
}

.book-showcase-cart:hover {
  background: #ff1a5c;
  transform: translateX(-50%) scale(1.15);
  box-shadow: 0 8px 30px rgba(190, 0, 60, 0.6);
}

.book-showcase-cart:hover i {
  transform: scale(1.1);
}

.book-showcase-cart:active {
  transform: translateX(-50%) scale(0.95);
}

/* ===== Навігація Swiper — мінімалізм ===== */
.book-showcase-pager .swiper-button-prev,
.book-showcase-pager .swiper-button-next {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.book-showcase-pager .swiper-button-prev:hover,
.book-showcase-pager .swiper-button-next:hover {
  background: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.2);
}

.book-showcase-pager .swiper-button-prev::after,
.book-showcase-pager .swiper-button-next::after {
  font-size: 18px;
  color: var(--showcase-text-light);
  font-weight: 600;
}

/* ===== Пагінація ===== */
.book-showcase-wrapper .swiper-pagination-bullet {
  width: var(--fib-8);
  height: var(--fib-8);
  background: rgba(255, 255, 255, 0.4);
  opacity: 1;
  transition: all 0.3s ease;
  border-radius: 50%;
}

.book-showcase-wrapper .swiper-pagination-bullet-active {
  background: var(--showcase-text-light);
  transform: scale(1.2);
}

/* ===== Адаптив — Мобільна гармонія ===== */
@media (max-width: 1024px) {
  .book-showcase-item {
    width: 145px;
  }
  
  .book-showcase-books {
    gap: var(--fib-13);
  }
  
  .book-showcase-slide {
    min-height: 400px;
    padding: var(--fib-34) 0;
  }
  
  .book-showcase-title {
    font-size: 28px;
  }
}

@media (max-width: 768px) {
  .book-showcase-slide {
    min-height: auto;
    padding: var(--fib-34) 0;
  }
  
  .book-showcase-header {
    flex-direction: column;
    gap: var(--fib-13);
    text-align: center;
    align-items: center;
    margin-bottom: var(--fib-21);
  }
  
  .book-showcase-title {
    font-size: 24px;
  }
  
  .book-showcase-more {
    font-size: 12px;
  }
  
  .book-showcase-books {
    gap: var(--fib-13);
  }
  
  .book-showcase-item {
    width: 125px;
  }
  
  .book-showcase-name {
    font-size: 12px;
    height: 32px;
  }
  
  .book-showcase-price {
    font-size: 12px;
  }
  
  .book-showcase-price .price-new {
    font-size: 14px;
  }
  
  /* Кошик завжди видимий на мобільних */
  .book-showcase-cart {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    width: 38px;
    height: 38px;
    bottom: 65px;
  }
  
  .book-showcase-cart i {
    font-size: 14px;
  }
  
  /* Навігація менша */
  .book-showcase-pager .swiper-button-prev,
  .book-showcase-pager .swiper-button-next {
    width: 40px;
    height: 40px;
  }
  
  .book-showcase-pager .swiper-button-prev::after,
  .book-showcase-pager .swiper-button-next::after {
    font-size: 14px;
  }
}

@media (max-width: 480px) {
  .book-showcase-slide {
    padding: var(--fib-21) 0;
  }
  
  .book-showcase-content {
    padding: 0 var(--fib-13);
  }
  
  .book-showcase-title {
    font-size: 20px;
  }
  
  .book-showcase-item {
    width: calc(33.333% - 8px);
    min-width: 95px;
  }
  
  .book-showcase-books {
    gap: var(--fib-8);
    justify-content: space-between;
  }
  
  .book-showcase-info {
    padding: var(--fib-8) var(--fib-2) var(--fib-2);
  }
  
  .book-showcase-name {
    font-size: 11px;
    height: 28px;
  }
  
  .book-showcase-price {
    font-size: 11px;
  }
  
  .book-showcase-price .price-new {
    font-size: 13px;
  }
  
  .book-showcase-price .price-old {
    display: none;
  }
  
  .book-showcase-discount {
    font-size: 9px;
    padding: var(--fib-2) var(--fib-5);
    top: var(--fib-5);
    right: var(--fib-5);
  }
  
  .book-showcase-cart {
    width: 32px;
    height: 32px;
    bottom: 55px;
  }
  
  .book-showcase-cart i {
    font-size: 12px;
  }
}

/* ===== Анімація появи — Брокманн 2.0 ===== */
@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(40px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes floatBook {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-6px); }
}

.book-showcase-item {
  animation: slideInUp 0.7s cubic-bezier(0.23, 1, 0.32, 1) forwards;
  opacity: 0;
}

.book-showcase-item:nth-child(1) { animation-delay: 0.05s; }
.book-showcase-item:nth-child(2) { animation-delay: 0.12s; }
.book-showcase-item:nth-child(3) { animation-delay: 0.19s; }
.book-showcase-item:nth-child(4) { animation-delay: 0.26s; }
.book-showcase-item:nth-child(5) { animation-delay: 0.33s; }

/* Легке "дихання" книг */
.book-showcase-item:not(:hover) .book-showcase-cover {
  animation: floatBook 4s ease-in-out infinite;
}

.book-showcase-item:nth-child(2) .book-showcase-cover { animation-delay: -1s; }
.book-showcase-item:nth-child(3) .book-showcase-cover { animation-delay: -2s; }
.book-showcase-item:nth-child(4) .book-showcase-cover { animation-delay: -0.5s; }
.book-showcase-item:nth-child(5) .book-showcase-cover { animation-delay: -1.5s; }

/* ===== Print styles ===== */
@media print {
  .book-showcase-wrapper {
    display: none;
  }
}