body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}
.navbar-brand {
    font-weight: 700;
    letter-spacing: 0.5px;
}
.card {
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    border: none;
    margin-bottom: 20px;
}
.card-header {
    border-radius: 10px 10px 0 0 !important;
    font-weight: 600;
    background-color: #fff;
    border-bottom: 2px solid #0d6efd;
}
.table th {
    background-color: #f0f4ff;
    font-weight: 600;
}
.btn {
    border-radius: 6px;
}
.badge {
    font-size: 0.85em;
}
.dashboard-stat {
    text-align: center;
    padding: 20px;
    border-radius: 10px;
    color: #fff;
}
.dashboard-stat h3 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 5px;
}
.dashboard-stat p {
    margin: 0;
    opacity: 0.9;
}
.stat-primary { background: linear-gradient(135deg, #0d6efd, #0a58ca); }
.stat-success { background: linear-gradient(135deg, #198754, #146c43); }
.stat-warning { background: linear-gradient(135deg, #ffc107, #cc9a06); }
.stat-info { background: linear-gradient(135deg, #0dcaf0, #0aa2c0); }
.report-card {
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    border: 1px solid #dee2e6;
}
.report-card .school-header {
    text-align: center;
    border-bottom: 3px double #0d6efd;
    padding-bottom: 15px;
    margin-bottom: 20px;
}
.report-card .school-header h2 {
    color: #0d6efd;
    font-weight: 700;
}
.report-card .student-info {
    margin-bottom: 20px;
}
.report-card table.grades-table th {
    background-color: #0d6efd;
    color: #fff;
}
@media print {
    .navbar, .btn, .no-print { display: none !important; }
    .report-card { border: none; box-shadow: none; }
    .report-page { max-width: 100% !important; }
}

.grade-badge {
    display: inline-block; padding: 1px 8px; border-radius: 3px;
    font-weight: 700; font-size: 11px; color: #fff; min-width: 24px;
}
.grade-A { background: #198754; } .grade-B { background: #0d6efd; }
.grade-C { background: #6f42c1; } .grade-D { background: #ffc107; color: #000; }
.grade-E { background: #fd7e14; } .grade-F { background: #dc3545; }