.glass-header {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.main-tab-btn.active {
    background-color: #ffffff;
    color: #4f46e5;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 9999px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Active folder item style */
.folder-item.active {
    background-color: #eef2ff;
    color: #4338ca;
    font-weight: 700;
}

/* Red Pulsing Animation for Overdue Tasks */
@keyframes overduePulse {
    0% {
        box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.4);
    }
    70% {
        box-shadow: 0 0 0 8px rgba(220, 38, 38, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(220, 38, 38, 0);
    }
}

.overdue-card {
    animation: overduePulse 2s infinite;
}