/* Advanced Filters Styles */
.filters-container {
    background: #f8f9fa;
    padding: 2rem 0;
    border-bottom: 1px solid #e0e0e0;
    margin-bottom: 2rem;
}

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

.filters-title {
    font-size: 1.2rem;
    font-weight: 300;
    color: #333;
    margin-bottom: 1.5rem;
    text-align: center;
    letter-spacing: 1px;
}

.filters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

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

.filter-label {
    font-size: 0.9rem;
    font-weight: 500;
    color: #555;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-select {
    padding: 0.75rem 1rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    background: white;
    font-size: 0.9rem;
    color: #333;
    transition: all 0.3s ease;
    cursor: pointer;
}

.filter-select:focus {
    outline: none;
    border-color: #000;
    box-shadow: 0 0 0 2px rgba(0, 0, 0, 0.1);
}

.filter-select:hover {
    border-color: #999;
}

.filter-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    border: 1px solid #ddd;
    background: white;
    color: #333;
    border-radius: 25px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 400;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-btn:hover {
    background: #f0f0f0;
    border-color: #999;
}

.filter-btn.active {
    background: #000;
    color: white;
    border-color: #000;
}

.filter-btn.clear {
    background: #f8f9fa;
    color: #666;
    border-color: #ccc;
}

.filter-btn.clear:hover {
    background: #e9ecef;
    color: #333;
}

/* Color filter specific styles */
.color-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 1rem;
}

.color-filter {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 3px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.color-filter:hover {
    transform: scale(1.1);
    border-color: #999;
}

.color-filter.active {
    border-color: #000;
    transform: scale(1.2);
}

.color-filter::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-weight: bold;
    font-size: 0.8rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.color-filter.active::after {
    opacity: 1;
}

/* Results counter */
.results-counter {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.9rem;
    color: #666;
    font-style: italic;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .filters-container {
        padding: 1.5rem 0;
    }
    
    .filters-wrapper {
        padding: 0 1rem;
    }
    
    .filters-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .filter-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .filter-btn {
        width: 100%;
        max-width: 200px;
    }
    
    .color-filters {
        justify-content: center;
    }
    
    .color-filter {
        width: 35px;
        height: 35px;
    }
}

/* Animation for filter results */
.artwork-item {
    transition: all 0.3s ease;
}

.artwork-item.filtered-out {
    opacity: 0;
    transform: scale(0.95);
    pointer-events: none;
}

.artwork-item.filtered-in {
    opacity: 1;
    transform: scale(1);
}

/* Loading state for filters */
.filters-loading {
    text-align: center;
    padding: 2rem;
    color: #666;
    font-style: italic;
}

.filters-loading::after {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #ddd;
    border-top: 2px solid #000;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 0.5rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}