.tools-filter {
    margin-bottom: 20px;
}

.blockchain-filter {
    width: 100%;
    padding: 10px;
    margin-bottom: 20px;
}

.tools-results {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.tool-item {
    border: 1px solid #ddd;
    padding: 15px;
    border-radius: 5px;
    width: calc(33.33% - 20px);
    box-sizing: border-box;
}

.tool-item h3 {
    margin-top: 0;
}

@media (max-width: 768px) {
    .tool-item {
        width: calc(50% - 20px);
    }
}

@media (max-width: 480px) {
    .tool-item {
        width: 100%;
    }
}