#prdd-calendar {
    background: #fff;
    padding: 20px;
    border: 1px solid #ccd0d4;
    box-shadow: 0 1px 1px rgba(0,0,0,.04);
}

/* Loader Spinner */
.prdd-spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #2271b1;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: prdd-spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes prdd-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.fc-event {
    cursor: pointer;
}

.fc .fc-button-primary {
    background-color: #2271b1;
    border-color: #2271b1;
}

.fc .fc-button-primary:hover {
    background-color: #135e96;
    border-color: #135e96;
}

.fc .fc-button-primary:not(:disabled).fc-button-active,
.fc .fc-button-primary:not(:disabled):active {
    background-color: #135e96;
    border-color: #135e96;
}

.fc .fc-button-primary:focus {
    box-shadow: 0 0 0 1px #fff, 0 0 0 3px #2271b1;
}

/* qTip Styles */
.qtip-content {
    font-size: 13px;
    line-height: 1.6;
}

.qtip-content a {
    color: #2271b1;
    text-decoration: none;
}

.qtip-content a:hover {
    color: #135e96;
    text-decoration: underline;
}

/* Loading overlay for event fetching */
.fc-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999;
}