/**
 * Interactive Card Stack Animation CSS
 * 4 cards per row with 20-degree perspective that overlap and spread on hover/scroll
 * FIXED: Responsive equal spacing using percentage-based translateX instead of fixed margins
 */

/* Grid container for product cards - 4 per row */
.product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    padding: 20px;
    perspective: 1000px;
    perspective-origin: center center;
    position: relative;
    justify-items: center;
}

/* Individual product card */
.product-card {
    background: #fef7f0;
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    border: 1px solid #f1f3f5;
    position: relative;
    width: 100%;
    max-width: 380px;
    
    /* Base 3D transform - cards rotated 20 degrees by default */
    transform: rotateY(20deg) translateY(0) scale(0.95);
    transition: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform-origin: center center;
    
    z-index: var(--card-index, 1);
}

/* Position cards using translateX based on their position in the row */
/* Percentages scale with viewport, maintaining equal spacing at all widths */
.product-card:nth-child(4n+1) { 
    --card-index: 1;
    transform: rotateY(20deg) translateX(25%) translateY(0) scale(0.95);
}
.product-card:nth-child(4n+2) { 
    --card-index: 2;
    transform: rotateY(20deg) translateX(15%) translateY(0) scale(0.95);
}
.product-card:nth-child(4n+3) { 
    --card-index: 3;
    transform: rotateY(18deg) translateX(-10%) translateY(0) scale(0.95);
}
.product-card:nth-child(4n+4) { 
    --card-index: 4;
    transform: rotateY(15deg) translateX(-45%) translateY(0) scale(0.95);
}

/* Flatten and spread cards on grid hover */
.product-grid:hover .product-card,
.product-grid.scrolled .product-card {
    transform: rotateY(0deg) translateX(0) translateY(-10px) scale(1);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    z-index: 10;
}

/* Mobile-specific: Auto-transform cards when visible in viewport */
@media (hover: none) and (pointer: coarse) {
    .product-card.mobile-visible {
        transform: rotateY(0deg) translateX(0) translateY(-10px) scale(1) !important;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
        z-index: 10;
        transition: all 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
    }

    /* Keep card in focus once user has interacted with the 3D viewer */
    .product-card.interacted {
        transform: rotateY(0deg) translateX(0) translateY(-10px) scale(1) !important;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
        z-index: 10;
        /* Remove transition to prevent card from scaling between touches */
        transition: none !important;
    }
}

/* Individual card hover - elevate even more */
.product-card:hover {
    transform: rotateY(0deg) translateX(0) translateY(-20px) scale(1.05) !important;
    z-index: 100 !important;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3) !important;
}

/* 3D viewer container within card */
.product-card .viewer-3d {
    width: 100%;
    height: 280px;
    position: relative;
    background: linear-gradient(135deg, #f5f0e8 0%, #e8dfd5 100%);
    border-bottom: 1px solid #e9ecef;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 60px;
    color: rgba(0, 0, 0, 0.1);
    font-weight: bold;
}

/* Ensure canvas fills the flex container properly */
.product-card .viewer-3d canvas {
    width: 100% !important;
    height: 100% !important;
    display: block;
}

/* Mobile-specific: Prevent page scrolling on 3D viewer touch */
@media (hover: none) and (pointer: coarse) {
    .product-card .viewer-3d canvas {
        touch-action: none;
    }
}

/* Product information section */
.product-info {
    padding: 20px;
}

.product-title {
    font-size: 20px;
    font-weight: 600;
    color: #212529;
    margin: 0 0 10px 0;
    font-family: 'Poppins', sans-serif;
}

.product-description {
    font-size: 14px;
    color: #6c757d;
    margin: 0 0 14px 0;
    line-height: 1.6;
    min-height: 60px;
}

.product-price {
    font-size: 22px;
    font-weight: 700;
    color: #2563eb;
    margin: 0 0 12px 0;
}

/* Card controls section */
.card-controls {
    display: flex;
    gap: 8px;
    align-items: center;
    padding: 12px 16px;
    background: #f5f0e8;
    border-top: 1px solid #e9ecef;
}

.card-controls label {
    font-size: 13px;
    color: #495057;
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    user-select: none;
}

.card-controls input[type="checkbox"] {
    cursor: pointer;
}

.card-controls button {
    background: #2563eb;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    flex: 1;
}

.card-controls button:hover {
    background: #1e40af;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

.card-controls button:active {
    transform: translateY(0);
}

/* Spacer to push reset button to the right */
.card-controls .spacer {
    flex: 1;
}

/* Loading indicator */
.loading-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(255, 255, 255, 0.95);
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 14px;
    color: #495057;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    z-index: 10;
}

/* Responsive adjustments */
@media (max-width: 1400px) {
    .product-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    /* Adjust positioning for 3 columns */
    .product-card:nth-child(3n+1) {
        --card-index: 1;
        transform: rotateY(20deg) translateX(10%) translateY(0) scale(0.95);
    }
    
    .product-card:nth-child(3n+2) {
        --card-index: 2;
        transform: rotateY(20deg) translateX(0%) translateY(0) scale(0.95);
    }
    
    .product-card:nth-child(3n+3) {
        --card-index: 3;
        transform: rotateY(20deg) translateX(-10%) translateY(0) scale(0.95);
    }
}

@media (max-width: 1024px) {
    .product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    /* Adjust positioning for 2 columns */
    .product-card:nth-child(2n+1) {
        --card-index: 1;
        transform: rotateY(20deg) translateX(8%) translateY(0) scale(0.95);
    }
    
    .product-card:nth-child(2n+2) {
        --card-index: 2;
        transform: rotateY(20deg) translateX(-8%) translateY(0) scale(0.95);
    }
}

@media (max-width: 768px) {
    .product-grid {
        grid-template-columns: 1fr;
        padding: 12px;
        gap: 16px;
    }
    
    .product-card {
        transform: rotateY(0deg) translateX(0) translateY(0) scale(1);
    }
    
    .product-card .viewer-3d {
        height: 250px;
    }
    
    .card-controls {
        flex-wrap: wrap;
    }
}

/* Single column layout option */
.product-grid.single-column {
    grid-template-columns: 1fr;
    max-width: 500px;
}

/* Two column layout option */
.product-grid.two-columns {
    grid-template-columns: repeat(2, 1fr);
    max-width: 1000px;
}

/* Three column layout option */
.product-grid.three-columns {
    grid-template-columns: repeat(3, 1fr);
    max-width: 1400px;
}