.filter-container {
    background: rgba(255,255,255,0.9);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    margin-bottom: 1.5rem;
}
.filter-section {
    margin-bottom: 1.2rem;
}
.filter-section:last-child {
    margin-bottom: 0;
}
.filter-section h3 {
    font-size: 1.1rem;
    margin-bottom: 0.8rem;
    color: #333;
    display: flex;
    align-items: center;
}
.filter-icon {
    display: inline-block;
    width: 20px;
    height: 20px;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="%23667eea"><path d="M10 18h4v-2h-4v2zM3 6v2h18V6H3zm3 7h12v-2H6v2z"/></svg>');
    margin-right: 8px;
}
.filter-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}
.filter-btn {
    padding: 0.6rem 1.2rem;
    border: none;
    background: #f5f7fa;
    color: #4a5568;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.95rem;
    font-weight: 500;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}
.filter-btn:hover {
    background: #e2e8f0;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}
.filter-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 8px rgba(102, 126, 234, 0.3);
}
@media (max-width: 768px) {
    .filter-buttons {
        gap: 0.5rem;
    }
    .filter-btn {
        padding: 0.5rem 0.8rem;
        font-size: 0.85rem;
    }
}