/* 4P Product Carousel */

:root {
  --fp-card-width: calc((100% - 3 * var(--fp-card-gap)) / 4);
  --fp-card-gap: 16px;
  --fp-card-radius: 12px;
  --fp-card-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  --fp-card-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
  --fp-card-bg: #fff;
  --fp-accent: #3b82f6;
  --fp-text: #1a1a1a;
  --fp-text-muted: #6b7280;
  --fp-btn-bg: #111;
  --fp-btn-text: #fff;
  --fp-skeleton-bg: #e5e7eb;
  --fp-skeleton-shine: #f3f4f6;
}

/* Container */
.fp-product-carousel {
  width: 100%;
  margin: 32px 0;
}

/* Wrapper (relative for arrows) */
.fp-carousel-wrapper {
  position: relative;
}

/* Track */
.fp-carousel-track {
  display: flex;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  gap: var(--fp-card-gap);
  padding: 8px 0 16px;
  scrollbar-width: none;
}

.fp-carousel-track::-webkit-scrollbar {
  display: none;
}

/* Card */
.fp-card {
  flex: 0 0 var(--fp-card-width);
  scroll-snap-align: start;
  background: var(--fp-card-bg);
  border-radius: var(--fp-card-radius);
  box-shadow: var(--fp-card-shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.fp-card:hover {
  box-shadow: var(--fp-card-shadow-hover);
  transform: translateY(-2px);
}

.fp-card-link {
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.fp-card-img {
  aspect-ratio: 1;
  overflow: hidden;
  background: #f9fafb;
  display: flex;
  align-items: center;
  justify-content: center;
}

.fp-card-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.3s ease;
}

.fp-card:hover .fp-card-img img {
  transform: scale(1.04);
}

.fp-card-body {
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.fp-card-brand {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--fp-text-muted);
}

.fp-card-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--fp-text);
  line-height: 1.35;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.fp-card-price {
  font-size: 15px;
  font-weight: 700;
  color: var(--fp-text);
  margin-top: auto;
  padding-top: 4px;
}

.fp-card-cart {
  display: block;
  width: calc(100% - 24px);
  margin: 0 12px 12px;
  padding: 10px 0;
  border: none;
  border-radius: 8px;
  background: var(--fp-btn-bg);
  color: var(--fp-btn-text);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, opacity 0.2s ease;
}

.fp-card-cart:hover {
  background: #333;
}

.fp-card-cart:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* Arrows */
.fp-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: 40px;
  height: 40px;
  border: none;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: opacity 0.2s ease, box-shadow 0.2s ease;
  color: #111;
}

.fp-arrow:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);
}

.fp-arrow-prev {
  left: -16px;
}

.fp-arrow-next {
  right: -16px;
}

.fp-arrow-hidden {
  opacity: 0;
  pointer-events: none;
}

/* Skeleton loader */
.fp-carousel-loading {
  display: flex;
  gap: var(--fp-card-gap);
  overflow: hidden;
  padding: 8px 0 16px;
}

.fp-skeleton {
  flex: 0 0 var(--fp-card-width);
  border-radius: var(--fp-card-radius);
  background: var(--fp-card-bg);
  overflow: hidden;
  box-shadow: var(--fp-card-shadow);
}

.fp-skeleton-img {
  aspect-ratio: 1;
  background: linear-gradient(90deg, var(--fp-skeleton-bg) 25%, var(--fp-skeleton-shine) 50%, var(--fp-skeleton-bg) 75%);
  background-size: 200% 100%;
  animation: fp-shimmer 1.5s infinite ease-in-out;
}

.fp-skeleton-text {
  height: 14px;
  margin: 12px 12px 0;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--fp-skeleton-bg) 25%, var(--fp-skeleton-shine) 50%, var(--fp-skeleton-bg) 75%);
  background-size: 200% 100%;
  animation: fp-shimmer 1.5s infinite ease-in-out;
}

.fp-skeleton-short {
  width: 60%;
  margin-bottom: 12px;
}

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

/* Responsive */
@media (max-width: 1024px) {
  :root {
    --fp-card-width: calc((100% - 2 * var(--fp-card-gap)) / 3);
  }
}

@media (max-width: 768px) {
  :root {
    --fp-card-width: calc(66.67% - var(--fp-card-gap));
  }

  .fp-arrow {
    display: none;
  }

  .fp-arrow-prev,
  .fp-arrow-next {
    display: none;
  }
}

@media (max-width: 480px) {
  :root {
    --fp-card-width: calc(75% - var(--fp-card-gap));
  }
}