.navbar {
    margin-bottom: 2rem;
}

.card {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card-header {
    background-color: #f8f9fa;
    border-bottom: 1px solid rgba(0,0,0,0.125);
}

.btn-group {
    margin-top: 1rem;
}

.btn-group .btn {
    margin-right: 0.5rem;
}

.form-select {
    max-width: 400px;
}

#signupUrl {
    word-break: break-all;
}

#signupUrl a {
    display: inline-block;
    margin-top: 0.5rem;
}

.device-card {
    transition: all 0.3s ease;
}

.device-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.5rem;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}