.login-container {
    max-width: 400px;
    margin: 50px auto;
    padding: 40px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.login-container h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
    font-size: 28px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #555;
}

.form-group input {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 6px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #3664F4;
}

button[type="submit"] {
    width: 100%;
    padding: 15px;
    background: #3664F4;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 18px;
    cursor: pointer;
    transition: background 0.3s;
}

button[type="submit"]:hover {
    background: #2952d3;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 20px;
    text-align: center;
}