.app-upcart-overlay {
    --upc-primary: var(--Main-primary_color);
    --upc-primary-dark: color-mix(in srgb, var(--upc-primary) 15%, #000);
    --upc-ink: #0F1B2D;
    --upc-ink-soft: #5B6B7F;
    --upc-border: #E7EDF3;
    --upc-surface: #FFFFFF;
    --upc-bg-soft: #F6FAFD;
    --upc-shadow-lg: 0 30px 80px rgba(15, 27, 45, 0.28);
    --upc-radius: 24px;
    --upc-ease: cubic-bezier(0.16, 1, 0.3, 1);
  
    position: fixed;
    inset: 0;
    z-index: 999999;
    display: flex;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.35s var(--upc-ease);
  }
  .app-upcart-overlay.is-active { opacity: 1; pointer-events: auto; }
  .app-upcart-overlay * { box-sizing: border-box; }
  
  .app-upcart-panel svg {
    width: 1em;
    height: 1em;
    display: block;
    flex-shrink: 0;
}


  .app-upcart-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(10, 18, 32, 0.5);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
  }
  
  .app-upcart-panel {
    position: relative;
    background: var(--upc-surface);
    box-shadow: var(--upc-shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
  }
  
  .app-upcart-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: none;
    background: rgba(15, 27, 45, 0.06);
    color: var(--upc-ink);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    cursor: pointer;
    z-index: 5;
  }
  .app-upcart-close:hover { background: rgba(15, 27, 45, 0.12);}
  
  .app-upcart-header {
    padding: 26px 60px 10px 28px;
    flex-shrink: 0;
  }
  .app-upcart-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12.5px;
    font-weight: 700;
    color: var(--upc-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 6px;
  }
  .app-upcart-eyebrow i { font-size: 13px; }
  .app-upcart-title {
    margin: 0;
    font-size: 21px;
    font-weight: 800;
    color: var(--upc-ink);
    letter-spacing: -0.01em;
    line-height: 1.3;
  }
  
  .app-upcart-carousel-viewport {
    overflow: hidden;
    padding: 18px 0 26px;
    flex: 1;
    min-height: 0;
  }
  .app-upcart-carousel-track {
    display: flex;
    gap: 16px;
    padding: 0 28px;
    transition: transform 0.6s var(--upc-ease);
    will-change: transform;
  }
  .app-upcart-carousel-track.is-dragging { transition: none; }
  
  .app-upcart-item {
    flex: 0 0 auto;
    width: 168px;
    display: flex;
    flex-direction: column;
    border-radius: 16px;
    border: 1px solid var(--upc-border);
    overflow: hidden;
    background: var(--upc-surface);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    transition: transform 0.35s var(--upc-ease), box-shadow 0.35s var(--upc-ease), border-color 0.35s var(--upc-ease);
    animation: upc-item-in 0.5s var(--upc-ease) backwards;
  }
  .app-upcart-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 14px 30px rgba(15, 27, 45, 0.12);
    border-color: var(--upc-primary);
  }
  @keyframes upc-item-in { from { opacity: 0; transform: translateY(14px) scale(0.96); } to { opacity: 1; transform: translateY(0) scale(1); } }
  
  .app-upcart-item-img { width: 100%; aspect-ratio: 1 / 1; overflow: hidden; background: var(--upc-bg-soft); position: relative; }
  .app-upcart-item-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--upc-ease); }
  .app-upcart-item:hover .app-upcart-item-img img { transform: scale(1.08); }
  
  .app-upcart-item-add {
    position: absolute;
    right: 8px;
    bottom: 8px;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--upc-primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    box-shadow: 0 6px 16px rgba(40, 157, 235, 0.4);
    transform: scale(0.85);
    opacity: 0;
    transition: all 0.3s var(--upc-ease);
    border: none;
    cursor: pointer;
  }
  .app-upcart-item:hover .app-upcart-item-add { transform: scale(1); opacity: 1; }
  .app-upcart-item-add.is-loading i { animation: upc-spin 0.7s linear infinite; }
  @keyframes upc-spin { to { transform: rotate(360deg); } }
  
  .app-upcart-item-name {
    padding: 12px 12px 14px;
    font-size: 13.5px;
    font-weight: 600;
    color: var(--upc-ink);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: 1;
  }
  
  .app-upcart-dots {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding-bottom: 20px;
    flex-shrink: 0;
  }
  .app-upcart-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--upc-border); transition: all 0.3s var(--upc-ease); cursor: pointer; }
  .app-upcart-dot.is-active { width: 20px; background: var(--upc-primary); border-radius: 4px; }
  
  .app-upcart-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    background: var(--upc-surface);
    border: 1px solid var(--upc-border);
    color: var(--upc-ink);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    cursor: pointer;
    box-shadow: 0 6px 16px rgba(15, 27, 45, 0.1);
    z-index: 4;
    transition: all 0.2s var(--upc-ease);
    opacity: 0;
    pointer-events: none;
  }
  .app-upcart-carousel-wrap:hover .app-upcart-arrow.is-visible { opacity: 1; pointer-events: auto; }
  .app-upcart-arrow:hover { background: var(--upc-primary); color: #fff; border-color: var(--upc-primary); }
  .app-upcart-arrow-prev { left: 8px; }
  .app-upcart-arrow-next { right: 8px; }
  .app-upcart-carousel-wrap { position: relative; }
  
  .app-upcart-style-modal .app-upcart-panel {
    margin: auto;
    width: min(560px, 92vw);
    max-height: 86vh;
    border-radius: var(--upc-radius);
    transform: scale(0.9) translateY(20px);
    opacity: 0;
    transition: transform 0.45s var(--upc-ease), opacity 0.4s var(--upc-ease);
  }
  .app-upcart-overlay.is-active.app-upcart-style-modal .app-upcart-panel { transform: scale(1) translateY(0); opacity: 1; }
  
  .app-upcart-style-sheet {
    align-items: flex-end;
    justify-content: center;
  }
  .app-upcart-style-sheet .app-upcart-panel {
    width: 100%;
    max-width: 640px;
    margin: 0 auto;
    border-radius: 26px 26px 0 0;
    max-height: 80vh;
    transform: translateY(100%);
    transition: transform 0.5s var(--upc-ease);
  }
  .app-upcart-overlay.is-active.app-upcart-style-sheet .app-upcart-panel { transform: translateY(0); }
  .app-upcart-style-sheet .app-upcart-header { padding-top: 30px; }
  .app-upcart-sheet-handle {
    width: 40px;
    height: 4px;
    border-radius: 4px;
    background: var(--upc-border);
    margin: 12px auto 0;
    flex-shrink: 0;
  }
  
  .app-upcart-style-corner {
    align-items: flex-end;
    justify-content: flex-end;
    padding: 24px;
  }
  .app-upcart-style-corner .app-upcart-backdrop { display: none; }
  .app-upcart-style-corner .app-upcart-panel {
    width: 340px;
    border-radius: 20px;
    border: 1px solid var(--upc-border);
    transform: translateY(24px) scale(0.94);
    opacity: 0;
    transition: transform 0.4s var(--upc-ease), opacity 0.35s var(--upc-ease);
  }
  .app-upcart-overlay.is-active.app-upcart-style-corner .app-upcart-panel { transform: translateY(0) scale(1); opacity: 1; }
  .app-upcart-style-corner .app-upcart-header { padding: 20px 50px 6px 20px; }
  .app-upcart-style-corner .app-upcart-title { font-size: 16.5px; }
  .app-upcart-style-corner .app-upcart-carousel-track { padding: 0 20px; }
  .app-upcart-style-corner .app-upcart-item { width: 128px; }
  .app-upcart-style-corner .app-upcart-carousel-viewport { padding: 14px 0 18px; }
  
  @media (max-width: 720px) {
    .app-upcart-style-modal .app-upcart-panel,
    .app-upcart-style-sheet .app-upcart-panel {
      width: 100%;
      max-width: 100%;
      border-radius: 22px 22px 0 0;
      align-self: flex-end;
      margin-top: auto;
      max-height: 85vh;
    }
    .app-upcart-style-modal { align-items: flex-end; }
    .app-upcart-style-corner {
      align-items: flex-end;
      justify-content: center;
      padding: 0;
    }
    .app-upcart-style-corner .app-upcart-panel {
      width: 100%;
      border-radius: 22px 22px 0 0;
    }
    .app-upcart-item { width: 140px; }
    .app-upcart-header { padding-right: 54px; }
  }
  
  @media (prefers-reduced-motion: reduce) {
    .app-upcart-overlay, .app-upcart-panel, .app-upcart-item, .app-upcart-carousel-track, .app-upcart-item-img img {
      transition-duration: 0.01ms !important;
      animation-duration: 0.01ms !important;
    }
  }