body {
    font-family: 'Segoe UI', sans-serif;
    background: #f0f3f5;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
.login-container {
    background: #fff;
    padding: 30px 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    width: 320px;
    text-align: center;
}
.login-container h2 {
    color: #2f855a;
    margin-bottom: 20px;
}
.login-container input {
    width: 100%;
    padding: 10px;
    margin: 8px 0;
    border: 1px solid #ccc;
    border-radius: 6px;
}
.login-container button {
    width: 100%;
    padding: 10px;
    background: #2f855a;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: bold;
}
.login-container button:hover {
    background: #276749;
}
.error {
    color: red;
    margin-top: 10px;
}