main .outline {
    height: 100%;
}
main section {
    display: none;
}
main section#tool {
    height: 100%;
    display: flex;
    flex-direction: column;
}
main h3 {
    margin: 0;
}
main textarea.editor {
    display: block;
    flex: 1;
    resize: none;
    font-size: clamp(0.7rem, 3vw, 1rem);
    width: calc(100% - 2 * var(--outline-width));
    height: 100%;
    margin: var(--outline-width);
    outline: var(--outline-width) solid var(--outline);
    color: var(--text);
    background: var(--background);
    border: none;
    overflow: visible;
}
main textarea.invalid {
    outline-color: var(--pastel-red);
}

article.controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
}
article.controls button, article.controls a.button {
    display: inline-block;
    margin: 0;
    margin-top: 8px;
    padding: clamp(8px, 3vw, 18px);
}
article.controls button:active, article.controls a.button:active {
    margin-top: calc(8px + var(--element-depth));
}