.role-admin { background: #dc3545; }
.role-instructor { background: #198754; }
.role-student { background: #0d6efd; }

.menu-card { transition: transform .1s, box-shadow .1s; }
a:hover > .menu-card { transform: translateY(-2px); box-shadow: 0 .5rem 1rem rgba(0,0,0,.1) !important; }
.menu-card.disabled { opacity: .55; }

.table td, .table th { vertical-align: middle; }
.text-pre { white-space: pre-wrap; }

/* exam 評価 */
.grade-A { background: #198754; color: #fff; }
.grade-B { background: #0d6efd; color: #fff; }
.grade-C { background: #6c757d; color: #fff; }
.grade-text-A { color: #198754; }
.grade-text-B { color: #0d6efd; }
.grade-text-C { color: #6c757d; }
.exam-img { cursor: zoom-in; }
@media print {
  body { background: #fff !important; }
  .card { box-shadow: none !important; }
}