.chat-input-shell {
    position: relative;
    min-width: 0;
    width: 100%;
    grid-column: 1 / -1;
}
.chat-input-shell:has(> textarea[hidden]) { display: none; }
.chat-input-shell.is-resizable > textarea {
    display: block;
    box-sizing: border-box;
    width: 100%;
    min-height: 3.5rem;
    max-height: 24rem;
    resize: none;
    padding-right: 2rem;
    color: #f7f7fb;
    background-color: #040917;
    font: inherit;
}
.chat-input-shell > .chat-input-resize {
    position: absolute;
    top: 0;
    right: 0;
    display: grid;
    place-items: center;
    width: 1.75rem;
    height: 1.75rem;
    min-width: 24px;
    min-height: 24px;
    padding: 0;
    border: 0;
    background: transparent;
    color: #8affea;
    cursor: ns-resize;
    touch-action: none;
}
.chat-input-resize svg { width: 1rem; height: 1rem; fill: none; stroke: currentColor; stroke-width: 1.5; }
.chat-input-resize:focus-visible { outline: 2px solid #00ffe2; outline-offset: -2px; }
.chat-input-resize[hidden] { display: none; }