.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 40vh);
    padding: 2vh;
}

.login-box {
    background-color: #fff;
    padding: 2vh;
    border-radius: 0.8vh;
    box-shadow: 0 0.2vh 0.4vh rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 40vw;
}

.login-box h1 {
    color: #1a1a1a;
    margin-bottom: 2vh;
    text-align: center;
}

.form-group {
    margin-bottom: 1.5vh;
}

.form-group label {
    display: block;
    margin-bottom: 0.6vh;
    color: #333;
}

.form-group input {
    width: 100%;
    padding: 0.8vh;
    border: 0.1vh solid #ddd;
    border-radius: 0.4vh;
    font-size: 1.2vh;
}

.form-group input:focus {
    outline: none;
    border-color: #ffd700;
    box-shadow: 0 0 0 0.2vh rgba(255, 215, 0, 0.2);
}

button {
    width: 100%;
    padding: 0.8vh;
    background-color: #1a1a1a;
    color: #fff;
    border: none;
    border-radius: 0.4vh;
    font-size: 1.2vh;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

button:hover {
    background-color: #333;
}

.error-message {
    color: #dc3545;
    text-align: center;
    margin-top: 1vh;
    font-size: 1.1vh;
}

@media (max-width: 768px) {
    .login-container {
        padding: 1vh;
    }

    .login-box {
        padding: 1.5vh;
    }
}