body {
    background-color: #f8f9fa;
}

.card {
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border: none;
    margin-bottom: 1.5rem;
}

.card-header {
    background-color: #fff;
    border-bottom: 1px solid #e9ecef;
    font-weight: 600;
}

.navbar-brand {
    font-weight: 700;
}

.table th {
    border-top: none;
    font-weight: 600;
}

.btn {
    font-weight: 500;
}

.display-4 {
    font-size: 2.5rem;
}

.alert {
    border: none;
    border-radius: 0.5rem;
}

.form-control, .form-select {
    border-radius: 0.5rem;
}

.input-group-text {
    border-radius: 0.5rem 0 0 0.5rem;
}

.badge {
    font-weight: 500;
}