/* ==================== */
/* Shop Page Styles     */
/* ==================== */

/* Page Header */
.page-header {
    padding: 140px 0 80px;
    text-align: center;
    background-color: var(--background-light);
    border-bottom: 1px solid var(--border-color);
}

.page-title {
    font-family: var(--font-serif);
    font-size: 3rem;
    font-weight: 300;
    letter-spacing: 0.3em;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.page-subtitle {
    font-size: 1rem;
    letter-spacing: 0.1em;
    color: var(--text-medium);
}

/* Shop Section */
.shop-section {
    padding: var(--spacing-xl) 0;
}

/* Filter Section */
.filter-section {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.7rem;
}

.filter-title {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 400;
    letter-spacing: 0.1em;
    color: var(--primary-color);
}

.filter-buttons {
    display: flex;
    gap: 0.8rem;
    flex-wrap: wrap;
}

.sort-dropdown {
    align-self: flex-end;
}

.filter-btn {
    padding: 0.6rem 1.5rem;
    border: 1px solid var(--border-color);
    background-color: transparent;
    color: var(--text-medium);
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: var(--transition-smooth);
    border-radius: 2px;
}

.filter-btn:hover,
.filter-btn.active {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: var(--background-white);
}

.sort-select {
    padding: 0.6rem 1.2rem;
    border: 1px solid var(--border-color);
    background-color: var(--background-white);
    color: var(--text-medium);
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    cursor: pointer;
    border-radius: 2px;
    transition: var(--transition-smooth);
}

.sort-select:hover,
.sort-select:focus {
    border-color: var(--accent-color);
    outline: none;
}

/* Products Grid */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.product-card {
    background-color: var(--background-white);
    transition: var(--transition-smooth);
    cursor: pointer;
    position: relative;
}

.product-card:hover {
    transform: translateY(-5px);
}

.product-image-wrapper {
    position: relative;
    width: 100%;
    height: 400px;
    overflow: hidden;
    margin-bottom: 1.5rem;
    background-color: var(--background-light);
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.product-card:hover .product-image {
    transform: scale(1.08);
}

.product-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: var(--accent-color);
    color: var(--background-white);
    padding: 0.4rem 1rem;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    border-radius: 2px;
}

.product-info {
    text-align: center;
}

.product-category {
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    color: var(--text-light);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
}

.product-name {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    color: var(--primary-color);
    margin-bottom: 0.8rem;
}

.product-price {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.product-stock {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.product-stock.low-stock {
    color: #d4a373;
}

.product-stock.out-of-stock {
    color: #999;
}

.btn-add-cart {
    width: 100%;
    padding: 0.8rem 1.5rem;
    border: 1px solid var(--primary-color);
    background-color: transparent;
    color: var(--primary-color);
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-add-cart:hover {
    background-color: var(--primary-color);
    color: var(--background-white);
}

.btn-add-cart:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-add-cart:disabled:hover {
    background-color: transparent;
    color: var(--primary-color);
}

/* Loading State */
.loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 0;
    color: var(--text-medium);
}

.loading i {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.loading p {
    font-size: 1rem;
    letter-spacing: 0.05em;
}

/* Empty State */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 0;
    color: var(--text-medium);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    color: var(--text-light);
}

.empty-state p {
    font-size: 1.1rem;
    letter-spacing: 0.05em;
}

/* Cart Link - Uses global styles from style.css */

/* Active Nav Link - 現在のページでも通常色を維持 */
.nav-link.active {
    color: var(--text-medium);
}

/* Active Nav Link Hover - ホバー時も他と同じ色に */
.nav-link.active:hover {
    color: var(--accent-color);
}

/* Footer Links */
.footer-links {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin: 1.5rem 0;
}

.footer-links a {
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    color: var(--background-light);
    opacity: 0.8;
    transition: var(--transition-smooth);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--accent-color);
}

/* Responsive Design */
@media (max-width: 992px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    .product-image-wrapper {
        height: 350px;
    }
}

@media (max-width: 768px) {
    .page-header {
        padding: 120px 0 60px;
    }
    
    .page-title {
        font-size: 2.5rem;
    }
    
    .filter-section {
        flex-direction: column;
        gap: 1.5rem;
        align-items: stretch;
    }
    
    .filter-buttons {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .filter-btn {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }
    
    .sort-dropdown {
        width: 100%;
    }
    
    .sort-select {
        width: 100%;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }
    
    .product-image-wrapper {
        height: 400px;
    }
}

@media (max-width: 480px) {
    .page-title {
        font-size: 2rem;
        letter-spacing: 0.2em;
    }
    
    .filter-btn {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }
    
    .product-image-wrapper {
        height: 350px;
    }
}