.card {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    margin-top: 2rem;
}

.card-header {
    background-color: #f8f9fa;
}

.list-group-item {
    transition: background-color 0.2s;
}

.list-group-item:hover {
    background-color: #f8f9fa;
}

.btn-primary {
    background-color: #0d6efd;
    border-color: #0d6efd;
}

.btn-primary:hover {
    background-color: #0b5ed7;
    border-color: #0a58ca;
}

.form-text {
    color: #6c757d;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.alert {
    margin-bottom:1rem;
    padding: 0.75rem 1.25rem;
    border: 1px solid transparent;
    border-radius: 0.25rem;
}

.alert-danger {
    color: #721c24;
    background-color: #f8d7da;
    border-color: #f5c6cb;
}

.alert-success {
    color: #155724;
    background-color: #d4edda;
    border-color: #c3e6cb;
}

/* Chart containers */
.chart-container {
    position:relative;
    height: 300px;
    width: 100%;
    margin-bottom: 1rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .chart-container {
        height: 250px;
    }
    
    .col-md-8, .col-md-4 {
        margin-bottom: 1rem;
    }
}

@media (max-width: 576px) {
    .chart-container {
        height: 200px;
    }
    
    .card-body {
        padding: 0.75rem;
    }
}

/* Loading spinner */
.spinner-border {
    width: 3rem;
    height: 3rem;
}

/* Chart cards */
.chart-card {
    height: 100%;
    margin-bottom: 1rem;
}

.chart-card .card-body {
    padding: 1rem;
}

/* Add these styles at the end of your existing CSS file */
#nav-user-email {
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    margin-left: 1rem;
    padding-left: 1rem;
}

#userEmailDisplay {
    font-size: 0.9rem;
    opacity: 0.9;
}

@media (max-width: 768px) {
    #nav-user-email {
        border-left: none;
        margin-left: 0;
        padding-left: 0;
    }
}