body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: #f8f9fa;
}

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

.card {
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.table th {
    white-space: nowrap;
}

.btn-resign {
    background-color: #dc3545;
    color: white;
}

.login-container {
    max-width: 400px;
    margin: 100px auto;
}

.employee-detail-section {
    margin-bottom: 1.5rem;
}

.employee-detail-section h5 {
    border-bottom: 2px solid #0d6efd;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}