:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --background-color: #f8fafc;
    --card-background: #ffffff;
    --text-color: #1e293b;
    --border-color: #e2e8f0;
    --success-color: #10b981;
    --error-color: #ef4444;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
}

.page-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.back-button {
    margin-bottom: 2rem;
}

.back-button a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.back-button a:hover {
    color: var(--primary-color);
}

.category-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 3rem 0;
    border-radius: 1rem;
    margin-bottom: 2rem;
    text-align: center;
}

.category-header h1 {
    font-size: 2.5rem;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.category-description {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-top: 1rem;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    padding: 1rem 0;
}

.product-card {
    background: var(--card-background);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.15);
}

.product-image-container {
    position: relative;
    padding-top: 75%;
    overflow: hidden;
}

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

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

.product-info {
    padding: 1.5rem;
}

.product-title {
    font-size: 1.25rem;
    margin: 0 0 0.5rem 0;
    color: var(--text-color);
}

.product-description {
    font-size: 0.875rem;
    color: #64748b;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.product-price {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.product-button {
    width: 100%;
    padding: 0.75rem;
    border: none;
    border-radius: 0.5rem;
    background-color: var(--primary-color);
    color: white;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: background-color 0.3s ease;
}

.product-button:hover {
    background-color: var(--secondary-color);
}

.product-button.out-of-stock {
    background-color: #94a3b8;
    cursor: not-allowed;
}

.no-products {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 0;
    color: #64748b;
}

.no-products i {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.notification {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    background-color: white;
    color: var(--text-color);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideIn 0.3s ease;
    z-index: 1000;
}

.notification.success i {
    color: var(--success-color);
}

.notification.error i {
    color: var(--error-color);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@media (max-width: 768px) {
    .page-container {
        padding: 1rem;
    }

    .category-header {
        padding: 2rem 0;
        border-radius: 0.5rem;
    }

    .category-header h1 {
        font-size: 2rem;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1rem;
    }

    .notification {
        left: 1rem;
        right: 1rem;
        bottom: 1rem;
    }
}