:root{--brand: #4f46e5;--bg: #f3f4f6}html,body{height:100%}body{font-family:Poppins,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial;background:var(--bg)}.screen.hidden{display:none!important}.screen{display:flex}.fab-add-task{position:absolute;bottom:90px;right:20px;width:60px;height:60px;border-radius:50%;background-color:#4f46e5;color:#fff;border:none;font-size:24px;box-shadow:0 4px 15px #4f46e566;cursor:pointer;z-index:100;display:flex;align-items:center;justify-content:center;transition:transform .2s}.fab-add-task:active{transform:scale(.9)}.modal-overlay{display:none;position:absolute;inset:0;background:#00000080;z-index:1000;align-items:flex-end;justify-content:center;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px)}@media(min-width:640px){.modal-overlay{align-items:center}}