:root {
    --brand: #0d6efd;
    --booked: #6c757d;
    --past: #e9ecef;
}
.fc .fc-toolbar-title { color: var(--brand); font-weight: 700; }
.fc-event.booked { background: var(--booked) !important; color:#fff !important; }
.fc-day.past-day { background: var(--past); pointer-events: none; opacity: 0.6; }
/* Modal responsive */
.modal-dialog { max-width: 600px; }
@media (max-width: 1200px) { .modal-dialog { max-width: 500px; } }
@media (max-width: 992px) { .modal-dialog { max-width: 450px; } }
@media (max-width: 768px) { .modal-dialog { max-width: 90%; margin: 1rem; } }
@media (max-width: 576px) { 
    .modal-dialog { max-width: 95%; margin: 0.5rem; } 
    .modal-body { padding: 1rem; }
    .modal-footer { flex-direction: column; gap: 0.5rem; }
    .modal-footer .btn { width: 100%; }
    .modal-body textarea, .modal-body input { font-size: 0.9rem; }
}