* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    background-color: #000000;
    color: #ffffff;
    font-family: 'Courier New', Courier, monospace;
    font-weight: bold;
    font-style: italic;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 2rem;
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
}

h1 {
    font-family: 'Space Mono', monospace;
    font-size: 6rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    border: 0.1875rem solid #ffffff;
    padding: 0.5rem 1.5rem;
}

.tagline {
    font-family: 'Courier New', monospace;
    font-size: 1.5rem;
    letter-spacing: 0.05em;
}

.signup-form {
    display: flex;
    flex-direction: row;
    align-items: stretch;
    gap: 1rem;
    margin-top: 6rem;
}

.signup-form input[type="email"] {
    background-color: transparent;
    border: 0.125rem solid #ffffff;
    color: #ffffff;
    font-family: 'Courier New', Courier, monospace;
    font-weight: bold;
    font-style: italic;
    font-size: 1.1rem;
    padding: 0.75rem 1.5rem;
    width: 22rem;
    text-align: center;
    outline: none;
}

.signup-form input[type="email"]::placeholder {
    color: #666666;
    font-style: italic;
}

.signup-form input[type="email"]:focus {
    border-color: #ffffff;
    box-shadow: 0 0 0 0.0625rem #ffffff;
}

.signup-form button {
    background-color: #ffffff;
    color: #000000;
    border: none;
    font-family: 'Courier New', Courier, monospace;
    font-weight: bold;
    font-style: italic;
    font-size: 1rem;
    padding: 0.75rem 2.5rem;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.signup-form button:hover {
    background-color: #cccccc;
}

@media (max-width: 700px) {
    html {
        font-size: calc(100vw / 700 * 16);
    }

    .signup-form {
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
    }

    .signup-form input[type="email"] {
        width: 100%;
        max-width: 22rem;
    }

    .signup-form button {
        width: 100%;
        max-width: 22rem;
    }
}

@media (max-height: 500px) {
    html {
        font-size: calc(100vh / 500 * 16);
    }

    .container {
        gap: 0.75rem;
    }

    .signup-form {
        margin-top: 1rem;
    }
}

@media (max-width: 700px) and (max-height: 500px) {
    html {
        font-size: min(calc(100vw / 700 * 16), calc(100vh / 500 * 16));
    }
}