/* ==========================================================================
   Advantages Carousel - Flip картки з snap scroll
   ========================================================================== */

/* Секція з glass effect */
.advantages-carousel.glass-section {
  padding: var(--section-padding-desktop);
  margin-bottom: var(--section-spacing-desktop);
  width: 100%;
  max-width: min(var(--content-width-desktop), var(--content-max-width));
  margin-left: auto;
  margin-right: auto;
}

.advantages-carousel .section-title {
  text-align: center;
  margin-bottom: 2rem;
}

/* Контейнер зі snap scroll всередині glass блоку */
.advantages-carousel__container {
  display: flex;
  align-items: stretch; /* Всі картки однакової висоти */
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  gap: 1.5rem;
  padding: 2rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none; /* Firefox */

  /* Центрування для показу 2 карток на desktop */
  padding-left: calc(50% - 340px);
  padding-right: calc(50% - 340px);
}

.advantages-carousel__container::-webkit-scrollbar {
  display: none; /* Chrome, Safari */
}

/* Картка - фіксована висота */
.advantage-card {
  position: relative;
  width: 280px;
  height: 420px;
  flex-shrink: 0;
  scroll-snap-align: start;
  perspective: 800px;
  cursor: pointer;
  border-radius: 16px;
}

@media (hover: hover) and (pointer: fine) {
  .advantage-card:hover {
    transform: scale(1.02);
  }
}

/* Оптимізація анімації - will-change тільки під час flip */
.advantage-card--animating {
  will-change: transform;
}

/* Front і Back - однакова висота */
.advantage-card__front,
.advantage-card__back {
  position: absolute;
  width: 100%;
  height: 100%;
  min-height: 420px;
  max-height: 420px;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transition: transform 0.6s ease;
  border-radius: 16px;
  overflow: hidden;
}

.advantage-card__front {
  transform: rotateY(0deg);
}

.advantage-card__back {
  transform: rotateY(180deg);
  background: #ffffff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1.5rem 1.25rem;
  overflow-y: auto;

  /* Однакова висота з front */
  box-sizing: border-box;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* Flipped state */
.advantage-card.flipped .advantage-card__front {
  transform: rotateY(-180deg);
}

.advantage-card.flipped .advantage-card__back {
  transform: rotateY(0deg);
}

/* === ПЕРЕДНЯ СТОРОНА === */

/* Фонове зображення */
.advantage-card__bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  z-index: 1;
}

/* Статичні зображення для карток 1-5 */
.advantage-card__bg--static-1 {
  background-image: url('../../img/1card.png');
}

.advantage-card__bg--static-2 {
  background-image: url('../../img/2card.png');
}

.advantage-card__bg--static-3 {
  background-image: url('../../img/3card.png');
}

.advantage-card__bg--static-4 {
  background-image: url('../../img/4card.png');
}

.advantage-card__bg--static-5 {
  background-image: url('../../img/5card.png');
}

/* Динамічне зображення через data-атрибут (встановлюється через JS) */
.advantage-card__bg--dynamic {
  background-image: none; /* Встановлюється через JavaScript з data-bg-image */
}

/* Fallback градієнт */
.advantage-card__bg--fallback {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* Затемнення */
.advantage-card__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  z-index: 2;
}

/* Контент передньої сторони */
.advantage-card__content {
  position: relative;
  z-index: 3;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 1.5rem;
  color: #ffffff;
}

.advantage-card__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  line-height: 1.2;
}

.advantage-card__subtitle {
  font-size: 0.9rem;
  font-weight: 400;
  opacity: 0.95;
  line-height: 1.4;
  margin-bottom: 1rem;
}

.advantage-card__hint {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.25);
  border-radius: 20px;
  transition: background 0.3s ease;
  margin-bottom: 0.75rem;
}

@media (hover: hover) and (pointer: fine) {
  .advantage-card:hover .advantage-card__hint {
    background: rgba(255, 255, 255, 0.3);
  }
}

/* Footer на передній стороні */
.advantage-card__front .advantage-card__footer {
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 0.75rem;
  line-height: 1.3;
  text-align: center;
}

.advantage-card__front .advantage-card__footer-title {
  font-weight: 600;
  display: block;
  margin-bottom: 0.25rem;
  color: #ffffff;
}

.advantage-card__front .advantage-card__footer-text {
  font-size: 0.7rem;
  opacity: 0.9;
  color: rgba(255, 255, 255, 0.95);
}

/* === ЗВОРОТНА СТОРОНА === */

/* Gradient по картках */
.advantage-card[data-advantage-id="1"] .advantage-card__back {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  color: #ffffff;
}

.advantage-card[data-advantage-id="2"] .advantage-card__back {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: #ffffff;
}

.advantage-card[data-advantage-id="3"] .advantage-card__back {
  background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
  color: #ffffff;
}

.advantage-card[data-advantage-id="4"] .advantage-card__back {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: #ffffff;
}

.advantage-card[data-advantage-id="5"] .advantage-card__back {
  background: linear-gradient(135deg, #14b8a6 0%, #0d9488 100%);
  color: #ffffff;
}

/* Список пунктів */
.advantage-card__items {
  list-style: none;
  padding: 0;
  margin: 0;
  overflow-y: auto;
}

.advantage-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  line-height: 1.4;
}

.advantage-item__icon {
  flex-shrink: 0;
  font-size: 1.1rem;
  line-height: 1.2;
}

.advantage-item__content {
  flex: 1 0 0;
}

.advantage-item__title {
  font-weight: 600;
  margin-right: 0.25rem;
}

/* Footer */
.advantage-card__footer {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.3);
  font-size: 0.875rem;
  line-height: 1.5;
}

.advantage-card__footer-title {
  font-weight: 700;
  display: block;
  margin-bottom: 0.5rem;
}

.advantage-card__footer-text {
  font-size: 0.75rem;
  opacity: 0.9;
}

/* === RESPONSIVE === */

/* Tablet (768px - 1023px) */
@media (width <= 1023px) {
  .advantages-carousel.glass-section {
    padding: var(--section-padding-mobile);
    margin-bottom: var(--section-spacing-mobile);
    max-width: var(--content-width-mobile);
  }

  .advantages-carousel__container {
    padding: 1.75rem;
    padding-left: calc(50% - 160px); /* Показує 1.2 картки */
    gap: 1rem;
  }

  .advantage-card {
    width: 260px;
    height: 400px;
    min-height: 400px;
    max-height: 400px;
  }

  .advantage-card__front,
  .advantage-card__back {
    min-height: 400px;
    max-height: 400px;
  }

  .advantage-card__title {
    font-size: 1.375rem;
  }

  .advantage-card__subtitle {
    font-size: 0.85rem;
  }
}

/* Mobile (<= 767px) */
@media (width <= 767px) {
  .advantages-carousel.glass-section {
    padding: var(--section-padding-mobile);
    margin-bottom: var(--section-spacing-mobile);
    max-width: var(--content-width-mobile);
  }

  .advantages-carousel__container {
    padding: 1.25rem;
    gap: 1rem;
    scroll-padding: 1.25rem;
  }

  .advantage-card {
    width: calc(100vw - 3.5rem);
    max-width: 280px;
    height: 380px;
    min-height: 380px;
    max-height: 380px;
  }

  .advantage-card__front,
  .advantage-card__back {
    min-height: 380px;
    max-height: 380px;
  }

  .advantage-card__title {
    font-size: 1.25rem;
  }

  .advantage-card__subtitle {
    font-size: 0.8125rem;
    margin-bottom: 0.75rem;
  }

  .advantage-card__hint {
    font-size: 0.75rem;
    padding: 0.375rem 0.875rem;
    margin-bottom: 0.75rem;
  }

  .advantage-card__front .advantage-card__footer {
    font-size: 0.7rem;
    padding-top: 0.75rem;
  }

  .advantage-card__front .advantage-card__footer-title {
    font-size: 0.7rem;
  }

  .advantage-card__front .advantage-card__footer-text {
    font-size: 0.65rem;
  }

  .advantage-card__back {
    padding: 1.25rem 1rem;
  }

  .advantage-item {
    font-size: 0.8125rem;
    margin-bottom: 0.5rem;
    line-height: 1.3;
  }

  .advantage-card__items {
    margin-bottom: 0.5rem;
  }
}

/* Обгортка для каруселі з стрілками */
.advantages-carousel-wrapper {
  position: relative;
}

/* Кнопки навігації каруселі переваг */
.advantages-carousel-nav-wrapper {
  display: none;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.advantages-carousel-nav {
  display: flex;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  border: 1px solid var(--color-white);
  color: var(--color-white);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  touch-action: manipulation;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(231, 30, 20, 0.3);
}

.advantages-carousel-nav:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

@media (hover: hover) and (pointer: fine) {
  .advantages-carousel-nav:hover {
    background: var(--color-primary-hover);
    border: 1px solid var(--color-white);
    transform: scale(1.1);
    box-shadow: 0 6px 16px rgba(231, 30, 20, 0.4);
  }
}

.advantages-carousel-nav:active {
  transform: scale(0.95);
}

.advantages-carousel-nav:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
  transform: none;
}

/* Десктоп: показуємо стрілки */
@media (width >= 768px) {
  .advantages-carousel-nav-wrapper {
    display: flex;
  }
}

/* Мобільний: приховуємо стрілки */
@media (width <= 767px) {
  .advantages-carousel-nav-wrapper {
    display: none;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .advantage-card__front,
  .advantage-card__back {
    transition: opacity 0.3s ease;
  }

  .advantage-card.flipped .advantage-card__front {
    transform: none;
    opacity: 0;
  }

  .advantage-card.flipped .advantage-card__back {
    transform: none;
    opacity: 1;
  }

  .advantage-card__back {
    opacity: 0;
  }
}