#mb-virtual-fridge-container {
    position: relative;
    width: 100%;
    height: 700px;
    background: #111; /* Fridge dark interior */
    border: 10px solid #e0e0e0;
    border-radius: 8px;
    box-shadow: inset 0 0 50px #000;
    overflow: hidden;
    user-select: none;
}

.mb-hover-price-tag {
    position: absolute;
    pointer-events: none;
    z-index: 50;
    transform: translate(-50%, 0);
    background: rgba(15, 15, 15, 0.9);
    color: #4CAF50;
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid #333;
    font-size: 14px;
    font-family: Arial, sans-serif;
    text-align: center;
    box-shadow: 0 4px 10px rgba(0,0,0,0.5);
    white-space: nowrap;
    opacity: 1;
    transition: opacity 0.2s ease;
}
.mb-hover-price-tag.hidden {
    opacity: 0;
}

#mb-fridge-canvas {
    width: 100%;
    height: 100%;
    cursor: grab;
    display: block;
}
#mb-fridge-canvas:active {
    cursor: grabbing;
}

.mb-cart-zone {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 320px;
    height: 90px;
    background: rgba(46, 204, 113, 0.2);
    border: 2px dashed #2ecc71;
    border-radius: 12px;
    color: #2ecc71;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 16px;
    opacity: 0;
    transition: all 0.3s ease;
    pointer-events: none; /* Let Three.js handle drop via raycasting */
}

/* Shown when a bottle is being dragged */
.mb-cart-zone.visible {
    opacity: 0.6;
}

/* Highlighted when hover overlaps */
.mb-cart-zone.active {
    opacity: 1;
    background: rgba(46, 204, 113, 0.4);
    border-style: solid;
    transform: translateX(-50%) scale(1.05);
}

/* Price Tag Supermarket UI */
.mb-hover-price-tag {
    position: absolute;
    transform: translate(-50%, 0);
    pointer-events: none;
    background: #ffea00; /* bright yellow wrapper */
    border: 2px solid #e5c100;
    border-radius: 4px;
    padding: 3px 6px;
    font-family: 'Arial Black', Impact, sans-serif;
    color: #cc0000; /* red text for discount/action */
    font-size: 20px;
    font-weight: 900;
    box-shadow: 2px 2px 5px rgba(0,0,0,0.5);
    z-index: 100;
    transform-origin: bottom center;
    transition: transform 0.15s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.15s ease-out;
}
.mb-hover-price-tag .currency {
    font-size: 14px;
    color: #333;
    font-weight: bold;
    font-family: sans-serif;
}
.mb-hover-price-tag.hidden {
    opacity: 0;
    transform: translate(-50%, 0) scale(0.1);
}