:root {
    --primary-color: #ee4d2d;
    --primary-hover: #d73211;
    --bg-color: #f5f5f5;
    --text-color: #333;
    --card-border-color: #e5e5e5;
}

body {
    background-color: var(--bg-color);
    font-family: 'Helvetica Neue', Helvetica, Arial, Roboto, sans-serif;
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-content {
    flex: 1;
}

/* Navbar */
.navbar {
    background: linear-gradient(-180deg,#f53d2d,#f63);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.navbar-brand, .nav-link {
    color: #fff !important;
}

/* Banner */
.main-banner {
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 1px 1px 0 rgba(0,0,0,.05);
}

/* Product Card */
.card-product {
    transition: transform 0.1s ease, box-shadow 0.1s ease;
    border: 1px solid transparent;
    border-radius: 4px;
    background: #fff;
    position: relative;
    cursor: pointer;
    overflow: hidden;
}

.card-product:hover {
    transform: translateY(-2px);
    border-color: var(--primary-color);
    box-shadow: 0 0.25rem 0.5rem rgba(0,0,0,.15);
    z-index: 1;
}

.product-img-container {
    width: 100%;
    padding-top: 100%; /* 1:1 Aspect Ratio */
    position: relative;
    background: #f5f5f5;
    overflow: hidden;
}

.product-img-container img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.product-img-container.grayscale img {
    filter: grayscale(100%);
    opacity: 0.8;
}

.card-product:hover .product-img-container img {
    transform: scale(1.05);
}

.card-body {
    padding: 0.5rem;
}

.card-title {
    font-size: 0.9rem;
    line-height: 1.2rem;
    height: 2.4rem;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    margin-bottom: 0.5rem;
    color: rgba(0,0,0,.87);
    font-weight: 400;
}

.price-tag {
    color: var(--primary-color);
    font-size: 1rem;
    font-weight: 600;
}

.sold-badge {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0,0,0,0.6);
    color: white;
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: bold;
    z-index: 2;
    white-space: nowrap;
    border: 2px solid white;
}

/* Animation */
.fade-in-up {
    animation: fadeInUp 0.5s ease-out both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile Responsive Tweaks */
@media (max-width: 576px) {
    .card-title {
        font-size: 0.8rem;
        line-height: 1.1rem;
        height: 2.2rem;
    }
    .price-tag {
        font-size: 0.9rem;
    }
    .sold-badge {
        font-size: 0.8rem;
        padding: 5px 10px;
    }
}