.main {
    padding-top: calc(44px + env(safe-area-inset-top) + 40px);
}

.nav-bar-right {
    width: auto;
    justify-content: flex-end;
}

.nav-icon.filter {
    width: 24px;
    height: 24px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2'%3E%3Cpath d='M22 19a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h5l2 3h9a2 2 0 0 1 2 2z'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

.filter-bar {
    position: fixed;
    top: calc(44px + env(safe-area-inset-top));
    left: 0;
    right: 0;
    height: 40px;
    background-color: #FFFFFF;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    overflow-x: auto;
    padding: 0 var(--spacing-page);
    gap: var(--spacing-xs);
    z-index: 998;
}

.filter-bar::-webkit-scrollbar {
    display: none;
}

.filter-item {
    padding: 6px 16px;
    border-radius: 20px;
    font-size: var(--font-size-body);
    color: var(--color-text-secondary);
    background-color: var(--color-card-bg);
    flex-shrink: 0;
    cursor: pointer;
    transition: var(--transition-normal);
}

.filter-item.active {
    background-color: var(--color-brand);
    color: #FFFFFF;
}

.product-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    padding-bottom: var(--spacing-section);
}

.product-item {
    position: relative;
    border-radius: var(--radius-card);
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 3/4;
}

.product-image {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-border);
    background-size: cover;
    background-position: center;
}

.product-mask {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-card);
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
}

.product-name {
    font-size: var(--font-size-h3);
    font-weight: var(--font-bold);
    color: #FFFFFF;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.product-origin {
    font-size: var(--font-size-mini);
    color: rgba(255,255,255,0.8);
}

.load-more, .no-more {
    text-align: center;
    padding: var(--spacing-section);
    color: var(--color-text-secondary);
    font-size: var(--font-size-body);
}

.load-more {
    cursor: pointer;
}

.load-more:active {
    color: var(--color-brand);
}

.no-more {
    color: var(--color-text-tertiary);
}

@media (min-width: 768px) {
    .main {
        display: flex;
        gap: var(--spacing-section);
    }

    .category-sidebar {
        width: 200px;
        flex-shrink: 0;
        position: sticky;
        top: calc(44px + env(safe-area-inset-top) + 50px);
        height: fit-content;
    }

    .sidebar-title {
        font-size: var(--font-size-h3);
        font-weight: var(--font-bold);
        color: var(--color-text-primary);
        margin-bottom: var(--spacing-card);
        padding-left: var(--spacing-sm);
    }

    .sidebar-item {
        padding: 12px var(--spacing-sm);
        font-size: var(--font-size-body);
        color: var(--color-text-secondary);
        cursor: pointer;
        border-radius: var(--radius-tag);
        margin-bottom: 4px;
        transition: var(--transition-normal);
    }

    .sidebar-item.active {
        background-color: rgba(184, 154, 103, 0.1);
        color: var(--color-brand);
    }

    .product-list-wrapper {
        flex: 1;
    }

    .product-list {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--spacing-card);
    }

    .product-item {
        aspect-ratio: 1;
    }
}