.error-message {
    background: #f8d7da;
    color: #721c24;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    border-left: 4px solid #dc3545;
}

.success-message {
    background: #d4edda;
    color: #155724;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    border-left: 4px solid #28a745;
}

.warning-message {
    background: #fff3cd;
    color: #856404;
    padding: 15px;
    border-radius: 5px;
    margin: 15px 0;
    border-left: 4px solid #ffc107;
    font-weight: 600;
}

.no-data {
    text-align: center;
    padding: 40px;
    color: #666;
    font-style: italic;
}

.toast-notification {
    position: fixed;
    top: 15%;
    left: 2%;
    padding: 12px 18px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    color: white;
    z-index: 9999;
    box-shadow: 0 6px 15px rgba(0,0,0,0.25);
    opacity: 1;
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.toast-notification.success {
    background: #27ae60;
}

.toast-notification.error {
    background: #e74c3c;
}

.toast-hide {
    opacity: 0;
    transform: translateY(-10px);
}