.loading {
    display: flex !important;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 20px;
    font-size: 16px;
    color: #f8f1f1;
    background: #555;
    border-radius: 8px;
    min-height: 200px;
    max-width: 400px;
    margin: 0 auto;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

    .loading span {
        margin-bottom: 20px;
        font-weight: bold;
    }

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

    100% {
        transform: rotate(360deg);
    }
}

.error {
    text-align: center;
    padding: 20px;
    color: #dc3545;
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    border-radius: 4px;
}

.filter-section summary::-webkit-details-marker {
    display: none;
}

.filter-section summary::marker {
    display: none;
}

.filter-section summary {
    list-style: none;
    position: relative;
    padding-right: 20px;
}

    .filter-section summary::after {
        content: '▼';
        position: absolute;
        right: 0;
        top: 0;
        transition: transform 0.2s ease;
        font-size: 12px;
        color: #666;
    }

.filter-section[open] summary::after {
    transform: rotate(180deg);
    content: '▲';
}