textarea {
    width: 100%;
    border-radius: 12px;
    border: 0;
    padding: 15px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background-color: var(--inputBackgrounColor);

    /* Crucial for auto-expand: */
    resize: none !important;      /* Prevent manual resizing */
    min-height: 60px;  /* Initial height */
    max-height: 300px; /* Maximum height before scrolling starts */
    box-sizing: border-box;

    /* Enable vertical scrolling when content hits max-height */
    overflow-y: auto; 

    /* Hide scrollbar for Firefox */
    scrollbar-width: none; 
    
    /* Hide scrollbar for IE and Edge */
    -ms-overflow-style: none;
}

textarea:focus {
    outline: none;
}