/* ============================================
   PAGE HEADER
   ============================================ */

.page-header {
    background-color: var(--color-light-bg);
    padding: var(--spacing-3xl) var(--container-padding);
    text-align: center;
    border-bottom: 1px solid var(--color-border);
}

.page-header h1 {
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

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

/* ============================================
   FILTER SECTION
   ============================================ */

.filter-section {
    padding: var(--spacing-xxl) var(--container-padding);
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-md) var(--spacing-xl);
    border: 2px solid transparent;
    background-color: var(--color-surface);
    border-radius: var(--radius);
    color: var(--color-text-dark);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.95rem;
    box-shadow: 0 10px 20px rgba(15, 42, 68, 0.08);
}

.filter-btn:hover {
    border-color: rgba(31, 106, 225, 0.4);
    color: var(--color-primary);
}

.filter-btn.active {
    background-color: var(--color-primary);
    border-color: transparent;
    color: white;
}

/* ============================================
   PRODUCTS SECTION
   ============================================ */

.products-section {
    padding: var(--spacing-3xl) var(--container-padding);
    background-color: var(--color-background);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-xxl);
}

.product-card {
    background-color: var(--color-surface);
    border: 1px solid transparent;
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
    opacity: 1;
    visibility: visible;
    box-shadow: 0 18px 36px rgba(15, 42, 68, 0.08);
    cursor: pointer;
    position: relative;
}

.product-card:not(.visible) {
    display: none;
    opacity: 0;
    visibility: hidden;
}

.product-card:hover {
    box-shadow: 0 24px 44px rgba(15, 42, 68, 0.14);
    border-color: rgba(15, 42, 68, 0.18);
    transform: translateY(-4px);
}

.product-card:hover .product-media {
    transform: scale(1.03);
    box-shadow:
        inset 0 0 0 1px rgba(255, 255, 255, 0.24),
        0 22px 34px rgba(15, 42, 68, 0.2);
}

.product-card:focus-visible {
    outline: 3px solid rgba(14, 165, 164, 0.5);
    outline-offset: 4px;
}

.product-media {
    width: 100%;
    height: 240px;
    border-radius: calc(var(--radius) - 6px);
    object-fit: cover;
    display: block;
    margin-bottom: var(--spacing-lg);
    box-shadow:
        inset 0 0 0 1px rgba(255, 255, 255, 0.24),
        0 18px 28px rgba(15, 42, 68, 0.14);
    transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.product-header {
    margin-bottom: var(--spacing-lg);
    border-bottom: 2px solid var(--color-border);
    padding-bottom: var(--spacing-md);
}

.product-name {
    font-size: 1.4rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.product-category {
    display: inline-block;
    background-color: var(--color-accent);
    color: white;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius);
    font-size: 0.8rem;
    font-weight: 600;
}

.product-body {
    flex-grow: 1;
    margin-bottom: var(--spacing-lg);
}

.product-body p {
    font-size: 0.95rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-light);
}

.product-body strong {
    color: var(--color-text-dark);
}

.packaging-options {
    background-color: rgba(31, 106, 225, 0.06);
    padding: var(--spacing-md);
    border-radius: var(--radius);
    margin-top: var(--spacing-md);
}

.packaging-options strong {
    display: block;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
    font-size: 0.95rem;
}

.packaging-options ul {
    list-style: none;
    padding-left: 0;
}

.packaging-options li {
    padding-left: var(--spacing-md);
    position: relative;
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.packaging-options li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

.btn-small {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.9rem;
    display: block;
    text-align: center;
}

.product-card .btn-small {
    margin-top: auto;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .page-header {
        padding: var(--spacing-xxl) var(--container-padding);
    }

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

    .filter-buttons {
        gap: var(--spacing-sm);
    }

    .filter-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.85rem;
    }

    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: var(--spacing-lg);
    }

    .product-card {
        padding: var(--spacing-md);
    }

    .product-media {
        height: 220px;
    }
}

@media (max-width: 480px) {
    .products-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .filter-buttons {
        flex-direction: column;
    }

    .filter-btn {
        width: 100%;
    }

    .product-card {
        padding: var(--spacing-md);
    }

    .product-media {
        height: 200px;
    }

    .product-name {
        font-size: 1.2rem;
    }
}