/* Shop Page Styles */
.shop-main {
    padding: calc(var(--spacing-unit) * 8) 0 calc(var(--spacing-unit) * 20) 0;
}

.nav-brand a {
    text-decoration: none;
    color: inherit;
}

.nav-menu a.active {
    color: var(--primary-color);
    font-weight: 600;
}

.page-header {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 16);
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.page-header p {
    font-size: 1.1rem;
    color: var(--text-color);
    opacity: 0.7;
    max-width: 600px;
    margin: 0 auto;
}

.filters {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: calc(var(--spacing-unit) * 12);
    padding: calc(var(--spacing-unit) * 6);
    background: var(--card-background);
    border-radius: var(--border-radius);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.filter-section {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 3);
}

.filter-section label {
    font-weight: 500;
    color: var(--text-color);
}

.filter-section select {
    padding: calc(var(--spacing-unit) * 3) calc(var(--spacing-unit) * 4);
    border: 2px solid var(--secondary-color);
    border-radius: calc(var(--border-radius) * 0.5);
    font-family: var(--font-family);
    font-size: 0.9rem;
    background: white;
    cursor: pointer;
}

.filter-section select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: calc(var(--spacing-unit) * 8);
    margin-bottom: calc(var(--spacing-unit) * 12);
}

.product-card {
    background: var(--card-background);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.product-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #f5f5f5 0%, #e5e5e5 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1rem;
    color: var(--secondary-color);
    font-weight: 500;
    position: relative;
    overflow: hidden;
}

.product-category {
    position: absolute;
    top: calc(var(--spacing-unit) * 3);
    left: calc(var(--spacing-unit) * 3);
    background: var(--primary-color);
    color: white;
    padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 3);
    border-radius: calc(var(--border-radius) * 0.5);
    font-size: 0.8rem;
    font-weight: 500;
    text-transform: uppercase;
}

.product-info {
    padding: calc(var(--spacing-unit) * 6);
}

.product-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: calc(var(--spacing-unit) * 3);
    color: var(--text-color);
}

.product-description {
    font-size: 0.9rem;
    color: var(--text-color);
    opacity: 0.7;
    margin-bottom: calc(var(--spacing-unit) * 4);
    line-height: 1.5;
}

.product-features {
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.product-features ul {
    list-style: none;
    font-size: 0.85rem;
}

.product-features li {
    margin-bottom: calc(var(--spacing-unit) * 1);
    position: relative;
    padding-left: calc(var(--spacing-unit) * 5);
}

.product-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.product-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.product-price {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.add-to-cart-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: calc(var(--spacing-unit) * 3) calc(var(--spacing-unit) * 6);
    border-radius: calc(var(--border-radius) * 0.7);
    font-family: var(--font-family);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.add-to-cart-btn:hover {
    background: #d1154a;
    transform: translateY(-2px);
}

.add-to-cart-btn:disabled {
    background: var(--secondary-color);
    cursor: not-allowed;
    transform: none;
}

.loading {
    text-align: center;
    padding: calc(var(--spacing-unit) * 8);
    font-size: 1.1rem;
    color: var(--text-color);
    opacity: 0.7;
}

/* Popular Badge */
.product-card.popular::after {
    content: '🔥 Popular';
    position: absolute;
    top: calc(var(--spacing-unit) * 3);
    right: calc(var(--spacing-unit) * 3);
    background: #ff6b35;
    color: white;
    padding: calc(var(--spacing-unit) * 1) calc(var(--spacing-unit) * 3);
    border-radius: calc(var(--border-radius) * 0.5);
    font-size: 0.8rem;
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 768px) {
    .filters {
        flex-direction: column;
        gap: calc(var(--spacing-unit) * 4);
    }
    
    .filter-section {
        width: 100%;
        justify-content: space-between;
    }
    
    .filter-section select {
        flex: 1;
        max-width: 200px;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
        gap: calc(var(--spacing-unit) * 6);
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .product-card {
        max-width: 100%;
    }
    
    .filters {
        padding: calc(var(--spacing-unit) * 4);
    }
    
    .filter-section {
        flex-direction: column;
        align-items: flex-start;
        gap: calc(var(--spacing-unit) * 2);
    }
    
    .filter-section select {
        width: 100%;
        max-width: none;
    }
}