body {
    background: #f3f4f6;
    font-family: Arial;
}

.auth-container {
    width: 400px;
    margin: 60px auto;
    background: white;
    padding: 30px;
    border-radius: 8px;
}

input, button, select {
    width: 100%;
    padding: 10px;
    margin: 5px 0 15px;
}

button {
    background: #3b82f6;
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 6px;
}

.alert.error { background: #fee2e2; padding: 10px; }
.alert.success { background: #dcfce7; padding: 10px; }