body {
    background-color: #f8f9fa;
}

.navbar-brand {
    font-weight: bold;
    font-size: 1.3rem;
}

.card {
    border: none;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    border-radius: 12px;
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid #eee;
    padding: 1.2rem;
}

.btn-primary {
    background-color: #2c3e50;
    border-color: #2c3e50;
}

.btn-primary:hover {
    background-color: #1a252f;
    border-color: #1a252f;
}

.navbar {
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}