:root {
    --light-grey: #f7f7f7;
    --blue-color: #007BFF;
    --blue-hover: #0056b3;
    --font-family: 'Montserrat', sans-serif;
    --text-color: #333;
    --border-radius: 0.5rem;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #ffffff;
    min-height: 100vh;
    color: var(--text-color);
}

.main {
    width: 100vw;
}

.container {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    width: 100%;
    box-sizing: border-box;
}

.login-main {
    background-color: var(--light-grey);
    padding: 2rem;
    border-radius: var(--border-radius);
    width: 100%;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: var(--box-shadow);
    box-sizing: border-box;
}

.login-main h2 {
    margin-top: 0;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    color: var(--blue-color);
    text-align: center;
}

.login-main .form {
    display: flex;
    flex-direction: column;
    width: 100%;
}

.login-main .label {
    margin-bottom: 0.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-align: left;
    color: var(--text-color);
}

.login-main input {
    padding: 0.75rem;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 1rem;
    outline: none;
    width: 100%;
    box-sizing: border-box;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.login-main input:focus {
    border-color: var(--blue-color);
    box-shadow: 0 0 5px rgba(0, 123, 255, 0.5);
}

#submit {
    padding: 0.75rem;
    background-color: var(--blue-color);
    color: #fff;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1rem;
    text-align: center;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

#submit:hover {
    background-color: var(--blue-hover);
    transform: translateY(-2px);
}

#submit:active {
    transform: translateY(0);
}

@media (max-width: 768px) {
    .login-main {
        width: 90%;
        padding: 1.5rem;
    }

    .login-main h2 {
        font-size: 1.5rem;
    }

    .login-main input,
    #submit {
        font-size: 0.9rem;
    }
}