.card {
    box-shadow: 0 0 15px rgba(0,0,0,0.1);
    border-radius: 10px;
}

.nav-tabs .nav-link {
    color: #666;
    font-weight: 500;
}

.nav-tabs .nav-link.active {
    color: #0d6efd;
}

.ip-result {
    padding: 20px;
}

.ip-info {
    margin-top: 15px;
}

.ip-info-item {
    margin-bottom: 10px;
    padding: 10px;
    background: #f8f9fa;
    border-radius: 5px;
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    h1 {
        font-size: 24px;
    }
}