.login-error {
background: rgba(255, 0, 0, 0.1);
border: 1px solid #ff4d4d;
color: #ff4d4d;
padding: 12px 16px;
border-radius: 6px;
margin-bottom: 20px;
font-size: 14px;
animation: fadeIn 0.4s ease;
}
@keyframes fadeIn {
from { opacity: 0; transform: translateY(-4px); }
to { opacity: 1; transform: translateY(0); }
}