body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    background-color: #f0f4f9;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}
.login-box {
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
    box-sizing: border-box;
}
.login-title {
    text-align: center;
    color: #2e7d32;
    margin-top: 0;
    margin-bottom: 10px;
    font-size: 22px;
}
.login-logo {
    display: block;
    width: 200px;
    max-width: 80%;
    margin: 0 auto 25px;
}
.form-group {
    margin-bottom: 20px;
}
.form-label {
    display: block;
    font-weight: bold;
    margin-bottom: 8px;
    color: #333;
}
.input-field {
    width: 100%;
    padding: 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    box-sizing: border-box;
    font-size: 16px;
}
.btn-submit {
    width: 100%;
    padding: 14px;
    background-color: #2e7d32;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
}
.btn-submit:hover {
    background-color: #1b5e20;
}
.alert-error {
    background-color: #ffebee;
    color: #c62828;
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 20px;
    font-size: 14px;
    border-left: 4px solid #c62828;
}