html {
    height: 100%;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    flex: 1 0 auto;
    box-sizing: border-box;
    padding: 10px;
    margin: 0;
    background: #fff;
}

h1 {
    text-align: center;
    margin-bottom: 16px;
    font-size: 1.5rem;
}

#formContainer, #linkOutput {
    width: 100%;
    max-width: 500px;
    margin: 0 auto 12px auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

label {
    margin-top: 6px;
    margin-bottom: 2px;
    font-weight: 500;
}

select {
    padding: 6px 8px;
    margin-top: 0;
    border-radius: 4px;
    border: 1px solid #ccc;
    font-size: 1rem;
}

#linkOutput {
    margin-top: 12px;
    font-weight: bold;
    word-break: break-word;
}

footer {
    margin-top: auto;
    width: 100%;
    text-align: center;
    font-size: 0.95rem;
    padding: 8px 0 4px 0;
}

@media (max-width: 700px) {
    #formContainer, #linkOutput {
        max-width: 100%;
        padding: 0 4px;
    }

    h1 {
        font-size: 1.1rem;
        margin-bottom: 12px;
    }

    body {
        padding: 4px;
    }

    footer {
        font-size: 0.9rem;
        padding: 6px 0 2px 0;
    }
}