:root {
  --color-products: #000;
  --color-products-text: #fff;
  --color-products-accent: #ff4747;
  --color-products-hover: #1a1a1a;
  --transition-speed: 0.4s;
  --bezier-curve: cubic-bezier(0.25, 1, 0.5, 1);
}

/* ===== Products Section ===== */
.products-section {
  position: relative;
  overflow: hidden;
  padding: 48px 0;
  font-family: system-ui, -apple-system, sans-serif;
  color: var(--color-products-text);
  background: linear-gradient(to bottom, transparent, #000);
}

/* Kỹ thuật làm mờ 2 đầu chuẩn hiệu năng cao (Không dùng mask-image) */
.products-section::before,
.products-section::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 10%;
  z-index: 5;
  pointer-events: none;
}

.products-section::before {
  left: 0;
  background: linear-gradient(to right, var(--color-products), transparent);
}

.products-section::after {
  right: 0;
  background: linear-gradient(to left, var(--color-products), transparent);
}

/* ===== Header & Controls ===== */
.products-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 6% 16px 6%;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.products-header h2 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.carousel-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

.carousel-toggle-button,
.products-previous-button,
.products-next-button {
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1.5px solid var(--color-products-text);
  border-radius: 50%;
  color: var(--color-products-text);
  cursor: pointer;
  width: 42px;
  height: 42px;
  transition: all 0.3s var(--bezier-curve);
}

.carousel-toggle-button:hover,
.products-previous-button:hover,
.products-next-button:hover {
  border-color: var(--color-products-accent);
  color: var(--color-products-accent);
  transform: scale(1.1);
}

/* ===== Carousel Body ===== */
.products-body {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  overflow-x: scroll;
  
  /* Chuẩn mạnh: Ẩn scrollbar Firefox */
  scrollbar-width: none; 
  
  /* Snap mượt: Dùng proximity để tránh giật trên Chrome khi lướt tay */
  scroll-snap-type: x proximity;
  scroll-behavior: smooth;
  
  touch-action: pan-y;
  user-select: none;
  cursor: grab;

  /* Đẩy scrollbar xuống dưới để giấu hoàn toàn */
  padding: 32px 6% 40px 6%;
  margin-bottom: -40px; 
}

/* Ẩn scrollbar Chrome/Safari (Vẫn cần thuộc tính này vì nó là chuẩn Engine Chromium) */
.products-body::-webkit-scrollbar {
  display: none;
}

.products-body.dragging {
  scroll-snap-type: none;
  scroll-behavior: auto;
  cursor: grabbing;
}

/* ===== Product Card ===== */
.product-card {
  flex: 0 0 calc((100% - 40px) / 3);
  min-width: calc((100% - 40px) / 3);
  scroll-snap-align: center;
  
  background-color: var(--color-products);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  
  /* GPU Acceleration */
  will-change: transform;
  transition: transform var(--transition-speed) var(--bezier-curve), 
              background-color var(--transition-speed) ease;
}

.product-card:hover {
  transform: translateY(-10px);
  background-color: var(--color-products-hover);
  border-color: rgba(255, 255, 255, 0.2);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.8);
}

.product-media {
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.product-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  transition: transform 0.8s var(--bezier-curve);
}

.product-card:hover .product-media img {
  transform: scale(1.1);
}

.product-title {
  padding: 20px 20px 10px 20px;
  font-size: 22px;
  font-weight: 600;
  margin: 0;
}

.product-info-bar {
  display: flex;
  justify-content: space-between;
  padding: 8px 20px;
  font-size: 15px;
  color: #888;
}

.product-price {
  color: var(--color-products-text);
  font-weight: 700;
}

.product-link {
  font-size: 18px;
  font-weight: 600;
  padding: 12px 0;
  color: var(--color-products-text);
  text-decoration: none;
  display: flex;
  justify-content: center;
  transition: color 0.3s ease, text-shadow 0.3s ease;
}

.product-link:hover {
  color: var(--color-products-accent);
  text-shadow: 0 0 15px var(--color-products-accent);
}

/* ===== Expand System (Smooth Slide) ===== */
.product-expand-button {
  width: 100%;
  padding: 14px 0;
  border: none;
  background: var(--color-products-text);
  color: var(--color-products);
  cursor: pointer;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: opacity 0.3s ease;
}

.product-expand-button:hover {
  opacity: 0.9;
}

.product-details {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.5s var(--bezier-curve);
  background: rgba(255, 255, 255, 0.03);
}

.product-card.expanded .product-details {
  grid-template-rows: 1fr;
}

.details-inner {
  min-height: 0;
  overflow: hidden;
  padding: 0 20px;
  font-size: 14px;
  line-height: 1.6;
  color: #bbb;
  transition: padding 0.5s var(--bezier-curve);
}

.product-card.expanded .details-inner {
  padding: 20px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .product-card {
    flex: 0 0 calc((100% - 20px) / 2);
    min-width: calc((100% - 20px) / 2);
  }
}

@media (max-width: 768px) {
  .product-card {
    flex: 0 0 85%;
    min-width: 85%;
  }
  .products-header h2 { font-size: 22px; }
  .products-section::before, .products-section::after { width: 50px; }
}